What are the best lacrosse rebounders for improving passing and catching skills. How do different rebounders compare in terms of size, durability, and rebound quality. Which features should you consider when choosing a lacrosse rebounder for practice.
Understanding Lacrosse Rebounders: Your Personal Practice Partner
Lacrosse rebounders, also known as bounce back walls, are essential training tools for players looking to enhance their skills. These devices simulate passing and catching scenarios, allowing athletes to practice independently and improve their stick work. By providing a consistent return of the ball, rebounders help players develop muscle memory, refine their technique, and boost overall performance on the field.
Key Benefits of Using a Lacrosse Rebounder
- Improves passing accuracy and catching skills
- Develops muscle memory for both dominant and non-dominant hands
- Allows for independent practice sessions
- Enhances hand-eye coordination
- Provides a consistent training experience
With the right rebounder, players can transform their backyard or local park into a personal training ground, maximizing practice time and accelerating skill development.
Factors to Consider When Choosing a Lacrosse Rebounder
Selecting the ideal lacrosse rebounder requires careful consideration of several key factors. Each element plays a crucial role in determining the effectiveness and longevity of your training equipment.
Size and Portability
The size of a lacrosse rebounder can significantly impact its usability and convenience. How do you determine the right size for your needs? Consider your available space and intended use. Smaller rebounders offer greater portability, making them ideal for players who need to move their equipment frequently or have limited storage space. Larger models provide a more expansive target area, which can be beneficial for group practice sessions or more advanced drills.
Durability and Construction Materials
The longevity of your rebounder depends largely on its construction. What materials offer the best durability? Metal frames typically provide superior strength and weather resistance, making them ideal for outdoor use. Plastic components can offer a good balance of durability and affordability but may not withstand harsh conditions as well as metal alternatives.
Rebound Quality and Adjustability
The rebound quality of a lacrosse rebounder is crucial for effective practice. Can the rebound tension be adjusted? Some models offer adjustable tension, allowing players to customize the bounce to simulate different types of passes or increase the challenge as skills improve. A good rebounder should provide consistent, predictable returns without dead spots.
Budget Considerations
Lacrosse rebounders come in a wide range of prices, typically from $30 to $200. How much should you invest in a rebounder? Consider your commitment level, frequency of use, and long-term goals. While budget-friendly options can be effective for beginners or casual players, more serious athletes might benefit from investing in a higher-quality, more durable model.
Top 5 Lacrosse Rebounders: A Comprehensive Review
After extensive research and analysis, we’ve identified the top five lacrosse rebounders available in 2023. Each model offers unique features and benefits to suit different player needs and preferences.
1. Rukket Lacrosse Rebounder: Versatility and Durability Combined
The Rukket Lacrosse Rebounder stands out for its exceptional versatility and robust construction. What makes this model a top choice for players of all levels?
- Powder-coated frame for weather resistance
- Adjustable rebound tension for customized practice
- Four angle settings to practice various skills
- Mesh-protected bungees to prevent accidental hits
- Excellent rebound quality with no dead areas
While the assembly process may take longer compared to some models, the Rukket rebounder’s durability and performance make it a worthwhile investment for serious players.
2. EZGoal Professional Folding Lacrosse Throwback Rebounder: Portability Meets Performance
The EZGoal Professional Folding Lacrosse Throwback Rebounder offers a balance of portability and functionality. Why might this be the ideal choice for players on the go?
- Foldable design for easy storage and transport
- Durable metal and plastic construction
- Adjustable tension knob for customized practice
- Extra-wide surface, beneficial for youth players
- Multiple rebound angles for varied skill development
While the rebound may not be as lively as some high-end models, the EZGoal Professional rebounder’s portability and versatility make it an excellent choice for players who value convenience.
3. EZGoal Pro Lacrosse Folding Throwback Rebounder: Heavy-Duty Performance
The EZGoal Pro Lacrosse Folding Throwback Rebounder is designed for players seeking a robust, weather-resistant option. What sets this model apart from its competitors?
- Heavy-duty metal frame for superior durability
- Extra-wide surface for expansive practice area
- Adjustable rebound tension for skill progression
- Foldable design for flat storage
- Weather-resistant construction for year-round use
While its size and weight may make it less portable than some alternatives, the EZGoal Pro rebounder’s durability and performance make it an excellent long-term investment for dedicated players.
4. Trademark Innovations Lacrosse Rebounder: Budget-Friendly Excellence
The Trademark Innovations Lacrosse Rebounder offers a cost-effective solution for players looking to improve their skills without breaking the bank. What makes this model stand out in the budget category?
- Most affordable option among top-rated rebounders
- Quick and easy assembly process
- Adequate performance for basic skill development
- Lightweight design for easy relocation
While it may lack some of the advanced features of pricier models, the Trademark Innovations rebounder provides excellent value for beginners or casual players.
5. ACELETIQS Lacrosse Rebounder: Lightweight Versatility
The ACELETIQS Lacrosse Rebounder combines lightweight construction with versatile functionality. Why might this be the perfect choice for players seeking a balance of portability and performance?
- Wide surface area for varied practice drills
- Adjustable frame for multiple rebound angles
- Lightweight design for easy setup and relocation
- Simple assembly process
- Adjustable tension for customized practice
While it may not offer the same level of durability as some metal-framed alternatives, the ACELETIQS rebounder’s lightweight design and adjustability make it an excellent choice for players who prioritize versatility.
Maximizing Your Practice with a Lacrosse Rebounder
Owning a lacrosse rebounder is just the first step towards improving your skills. To truly benefit from this training tool, it’s essential to use it effectively and consistently. How can you optimize your practice sessions with a rebounder?
Fundamental Drills for Skill Development
- Basic Catch and Throw: Start with simple passes to get comfortable with the rebounder’s response.
- Rapid Fire: Increase the speed of your passes to improve hand-eye coordination and reaction time.
- Off-Hand Practice: Dedicate time to your non-dominant hand to become a more versatile player.
- Ground Balls: Adjust the rebounder’s angle to practice scooping ground balls.
- Shooting Accuracy: Use targets or zones on the rebounder to enhance your shooting precision.
Remember to focus on proper form and technique during these drills. Quality repetitions are more valuable than quantity when it comes to skill development.
Advanced Techniques for Experienced Players
As your skills improve, you can incorporate more challenging drills into your routine. How can advanced players push their limits with a rebounder?
- One-Handed Catches: Enhance your stick control by practicing one-handed catches and throws.
- Behind-the-Back Passes: Develop your ability to make unconventional passes in game situations.
- Quick Stick Drills: Work on releasing the ball immediately upon catching it to improve your reaction time.
- Combination Drills: Create sequences that combine multiple skills, such as catching, cradling, and shooting.
By consistently challenging yourself with varied and complex drills, you can continue to improve even as your skills advance.
Maintaining Your Lacrosse Rebounder for Longevity
Proper maintenance of your lacrosse rebounder can significantly extend its lifespan and ensure consistent performance. How can you keep your rebounder in top condition?
Regular Inspection and Cleaning
Periodically inspect your rebounder for signs of wear or damage. Clean the surface regularly to remove dirt and debris that could affect the ball’s bounce. For metal frames, check for any rust and address it promptly to prevent structural issues.
Storage and Protection
When not in use, store your rebounder in a dry, covered area to protect it from the elements. If your model is foldable, take advantage of this feature to minimize exposure to weather and potential damage.
Tension Adjustment and Part Replacement
Regularly check and adjust the tension of your rebounder to maintain optimal performance. Replace worn parts, such as bungee cords or netting, as needed to ensure safe and effective use.
Integrating Rebounder Practice into Your Training Regimen
To maximize the benefits of your lacrosse rebounder, it’s crucial to incorporate it effectively into your overall training plan. How can you balance rebounder practice with other aspects of lacrosse training?
Creating a Balanced Practice Schedule
Aim to include rebounder sessions in your routine 3-4 times per week, focusing on specific skills each time. Complement these sessions with conditioning, scrimmages, and team practices for well-rounded development.
Setting Goals and Tracking Progress
Establish clear, measurable goals for your rebounder practice, such as improving your catch percentage or increasing your passing speed. Keep a log of your practice sessions and periodically assess your progress to stay motivated and identify areas for improvement.
Combining Rebounder Work with Other Training Aids
Integrate your rebounder practice with other lacrosse training aids, such as agility ladders or shooting targets, to create more dynamic and challenging workouts. This approach can help simulate game-like scenarios and improve your overall lacrosse IQ.
The Future of Lacrosse Training: Technology and Rebounders
As technology continues to advance, the world of lacrosse training is evolving. How might future developments enhance the effectiveness of lacrosse rebounders?
Smart Rebounders and Performance Tracking
Imagine rebounders equipped with sensors that can track your pass velocity, accuracy, and reaction time. This data could be synced with smartphone apps, allowing players to analyze their performance and track improvements over time.
Virtual Reality Integration
Virtual reality technology could potentially be combined with rebounders to create immersive training experiences. Players might practice in simulated game environments while still benefiting from the physical feedback of a real rebounder.
Customizable Rebound Patterns
Future rebounders might offer programmable rebound patterns, allowing players to practice responding to unpredictable passes or simulate specific game scenarios.
While these technologies are still speculative, they highlight the potential for continued innovation in lacrosse training equipment. As the sport grows and evolves, so too will the tools available to players for skill development and performance enhancement.
5 Best Lacrosse Rebounders for Passing & Catching in 2023
Equipment
Written byLax Farmer Updated on
It’s no secret that lacrosse is a challenging sport. The best way to improve your skills and become a better player is to practice your stick skills as much as possible. The problem? We don’t always have a friend around to catch and throw with, or a brick wall to bounce off of.
That’s why it’s imperative to have a lacrosse rebounder. They help improve passing accuracy, catching, and most importantly – muscle memory. Practicing with a rebounder, along with the other best lacrosse training aids, helps make passing and catching (with both hands) become instinctual during game time. Let’s jump into our list for the best lacrosse rebounders on the market.
What to look for in a Rebounder (or Bounce Back)
Size
When selecting a lacrosse rebounder, make sure to choose the right size for your needs.
If you are looking for something that is portable and easy to move around, then go with a smaller model. If you have more space available or want something that can be used by multiple people at once, then choose a larger model.
Durability
Lacrosse rebounders are typically made of either metal or plastic. Metal lacrosse rebounders are more durable and can be used for a longer period of time, but they are also more expensive. Plastic lacrosse rebounders are less expensive and can be just as effective for practicing lacrosse skills.
Budget
Another important factor to consider when selecting a lacrosse rebounder is your budget. Lacrosse rebounders range in price from around $30 to $200. Choose the lacrosse rebounder that fits your needs and budget.
Rebound
Rebound is how much bounce back a rebounder offers. Some offer a lot of bounce, some are sturdier, and some have adjustable rebound tension. Rebounders with more bounce-ability are more often preferred, whereas rebounders with less bounce are typically better for lacrosse beginners.
With all of that in mind, let’s jump into our top five lacrosse rebounders!
Best Lacrosse Rebounders
1.
Rukket Lacrosse Rebounder
The Rukket lacrosse rebounder is a great option for lacrosse players of all levels. This rebounder frame is powder coated and very durable, making it virtually weather-proof when left outside. This rebounder also has mesh protected bungees, so you never hit the bungees while practicing.
Pros:
- Adjustable rebound tension,
- 4 different angles to work on passing and ground balls
- Excellent “rebound”
- No dead areas
- Material built for long term outdoor use
Cons:
- Longer time to assemble
2.
EZGoal Professional Folding Lacrosse Throwback Rebounder
The EZGoal Professional Folding lacrosse rebounder is a great option for lacrosse beginners who want a durable and portable rebounder. This rebounder is made of metal and plastic, and has an adjustable tension knob to customize your practice experience.
It also folds up for easy transport and storage.
Pros:
- Durable and sturdy
- Foldable
- Extra wide surface – helpful for youth players
- Adjustable frame that achieves different rebound angles
Cons:
- Less “rebound”
3.
EZGoal Pro Lacrosse Folding Throwback Rebounder
The EZGoal Pro lacrosse rebounder is a great lacrosse bounce back for lacrosse players of all levels. This rebounder is made of metal, making it durable and weather-resistant, and folds up for easy transport and storage.
Pros:
- Extra wide surface
- Heavy duty, durable frame
- Adjustable rebound tension
- Foldable, can be stored flat
Cons
- Larger, heavier, more difficult to move
4. Trademark Innovations Lacrosse Rebounder
The Trademark Innovations lacrosse rebounder is a great lacrosse bounce back for lacrosse players of all levels. This rebounder is the best bang for your buck.
It is also very easy to assemble and collapse for storage.
Pros:
- Most affordable
- Easy to assemble
- “Gets the job done”
Cons:
- Less frame adjustability
5.
ACELETIQS Lacrosse Rebounder
The ACELETIQS lacrosse rebounder is a great lacrosse rebounder for lacrosse players of all levels. This rebounder is made of heavy-duty plastic and has an adjustable tension knob to customize your practice experience.
Pros:
- Wide surface
- Adjustable frame that achieves different rebound angles
- Lightweight
- Easy to assemble
Cons:
- Less durable
Frequent Lacrosse Rebounder Questions:
How do I use a lacrosse rebounder to improve stick skills?
Here are some tips on how to use a lacrosse rebounder to become a better player:
- Start by setting up the lacrosse rebounder in an open space. You’ll need enough room to move around and bounce & catch the ball.
- Set your lacrosse rebounder at different angles and distances to challenge yourself.
- Practice catching and throwing with both hands. This will help you become a more dynamic player.
- Try aiming for the same spot over and over again, and then do the same with your opposite hand. This will help sharpen your pass accuracy.
- Make sure to use proper form when catching and throwing the ball – this will help you become more consistent.
Are lacrosse rebounders portable?
Yes, lacrosse rebounders are portable and can be taken with you wherever you go. Depending on the model, you will be able to fold or collapse the rebounder.
Are lacrosse rebounders adjustable?
Yes, lacrosse rebounders are adjustable. Most models will allow you to adjust the angle and height of the rebounder.
Do I need a lacrosse net to use a rebounder?
No, you do not need a lacrosse net to use a lacrosse rebounder. A rebounder is designed to help improve your passing and catching.
However, if you want to practice shooting, then you will need a lacrosse net! In fact, may people pair a lacrosse rebounder and a lacrosse net in the backyard, so they can practice passing and shooting in tandem.
Recap
If you’re looking for the best lacrosse rebounders to help improve your skills, then look no further. Instead of searching for a brick wall to throw a lacrosse ball off of, the five rebounders featured in this article are all excellent choices for becoming a better player. Our top pick is the Rukket Lacrosse Rebounder, which offers four different angles to work on your passing and ground balls. It’s also built for long-term outdoor use. Whichever lacrosse rebounder you choose, make sure to practice regularly and challenge yourself with different angles and distances. With some hard work and dedication, catching and throwing with both hands will come naturally during game time.
Still itching to improve your game? Check out our top picks for best lacrosse training aids.
Similar Posts
Equipment
5 Best Lacrosse Goals And Nets In 2023
ByLax Farmer
Looking to improve your lacrosse shot with a new lacrosse goal? Look no further. In addition to lacrosse rebounders, lacrosse goals are a fantastic way to practice your shot and get reps on your own time. There are dozens of lacrosse goals on the market today that come in various shapes and sizes. Some are…
Read More 5 Best Lacrosse Goals And Nets In 2023Continue
Equipment
5 Best Lacrosse Backpacks In 2023
ByLax Farmer
Need help carrying your gear? Look no further. Lacrosse backpacks are lightweight, easy to carry bags that make lacrosse on-the-go much more convenient. These backpack-style bags are a bit different than traditional lacrosse equipment bags in that you can sling them over your shoulders, schoolbag-style, and walk your gear to the field.
In this article,…
Read More 5 Best Lacrosse Backpacks In 2023Continue
Equipment
7 Best Lacrosse Bags In 2023: Spacious, Durable, & Easy To Carry
ByLax Farmer
Need help carrying your gear? Not anymore! If you’re looking for spacious, durable lacrosse bags to carry your lacrosse equipment, you’ve come to the right place. Unlike lacrosse backpacks (which look similar to schoolbags), lacrosse equipment bags provide additional space to store your gear; such as your helmet, gloves, elbow pads, shoulder pads, lacrosse sticks,…
Read More 7 Best Lacrosse Bags In 2023: Spacious, Durable, & Easy To CarryContinue
Equipment
14 Best Lacrosse Training Aids of 2023
ByLax Farmer
Looking to become a better lacrosse player? Elevating your game involves training and consistent practice; however, in 2023, there are fantastic training aids that help take your game to the next level.:max_bytes(150000):strip_icc()/BCAN-Trampoline-Fitness-Rebounder-1-d478f49fdab942fd8f8152854d41edee-5e48fdb0ad874f9396cb97d5c0653e02.jpg)
Not only do these aids make you a better lacrosse athlete, they also make training more fun and enjoyable! Whether you’re a beginner…
Read More 14 Best Lacrosse Training Aids of 2023Continue
Best Lacrosse Rebounders – Bricks Chicago
Lacrosse is an exciting and fast-paced sport that requires skill, precision, and agility. Whether you’re a beginner looking to improve your game or an experienced player honing your skills, a lacrosse rebounder is an essential piece of equipment to have. A lacrosse rebounder allows you to practice your shooting, passing, and catching skills by yourself, making it a valuable tool for players of all levels. In this article, we will explore the best lacrosse rebounders available on the market and provide detailed descriptions of each outlined point.
Table of Contents
Toggle
Benefits of Using a Lacrosse Rebounder
Rebound the Game
Please enable JavaScript
Rebound the Game
Before we dive into the best lacrosse rebounders, let’s take a moment to understand why using a rebounder is beneficial for lacrosse players.
4′ Lacrosse Bounce Back Rebounder Pitch Back Ball Return Training Screen by Trademark Innovations,Black
Champion Sports Replacement Net and Bungee Loops for LBT10 Lacrosse Rebounder Replacement Net and Bungee Loops for LBT10 Lacrosse Rebounder
Goal Sports Innovation Lax Dog Lacrosse Goal Ball Return/Retriever Insert for Lacrosse Goals, A Lacrosse rebounder for Shooting Training Practice (6’x6′)
Franklin Sports Lacrosse Rebounder – Lax Bounce Back Net + Rebounder – Portable Shooting Practice Training Aid for Kids + Adults – 4′ x 3′
EZ Goal Professional Folding Lacrosse Throwback Rebounder, 8 Feet
Lacrosse Scoop Premium 4x7ft Lacrosse Rebounder
Rukket 4x7ft Lacrosse Rebounder Pitchback Training Screen, Practice Catching, Throwing, and Shooting
Victorem Lacrosse Rebounder for Backyard – 73×43 Inches Lacrosse Bounce Back Net, Pitch Back Baseball Rebounder fits for Volleyball, Tennis and Softball Training
STX Lacrosse Bounce Back Pass Master Cover
McHom Lacrosse Baseball Softball Pitchback Rebounder Net, Adjustable Angle, 6ft x 3.
6ft Practice Net Screen- Pitchback, Throwback, Bounce Back Training Wall, Portable with Carrying Bag
6ft Practice Net Screen- Pitchback, Throwback, Bounce Back Training Wall, Portable with Carrying Bag1. Improves Hand-Eye Coordination:
A rebounder is an excellent tool for improving your hand-eye coordination. As the ball bounces off the rebounder, you need to track its trajectory and position yourself correctly to catch or shoot it. This helps you develop quick reflexes and enhances your ability to react to fast-paced game situations.
2. Enhances Passing and Catching Skills:
A rebounder allows you to practice your passing and catching skills without the need for a partner. You can throw the ball against the rebounder and work on your accuracy, timing, and receiving techniques. This repetitive practice will significantly improve your skills on the field.
3. Develops Shooting Accuracy and Power:
One of the essential aspects of lacrosse is scoring goals. A rebounder provides a target for shooting practice, allowing you to work on your accuracy and power.
By repeatedly shooting at the rebounder, you can fine-tune your shooting technique and gain the confidence needed to score goals in a real game.
4. Solo Practice Sessions:
While lacrosse is primarily a team sport, it’s not always possible to practice with teammates or coaches. A rebounder gives you the freedom to have productive solo practice sessions. You can work on specific skills at your own pace and focus on areas that need improvement without relying on others.
Factors to Consider When Choosing a Lacrosse Rebounder
When selecting a lacrosse rebounder, there are several factors to keep in mind. Consider the following aspects before making your purchase:
1. Size and Portability:
Rebounders come in various sizes, so it’s essential to choose one that suits your needs. If you have limited space or plan to travel with your rebounder, opt for a smaller, more portable model. However, if space is not an issue and you have a dedicated practice area, a larger rebounder might be a better choice.
2. Adjustability:
Some rebounders offer adjustable angles, allowing you to practice different types of passes and shots. Consider whether the rebounder you’re considering has this feature, as it can add versatility to your practice sessions.
3. Durability and Construction:
Lacrosse can be a physically demanding sport, so it’s crucial to invest in a rebounder that can withstand regular use and withstand the impact of lacrosse balls. Look for rebounders made from sturdy materials like steel frames, nylon netting, and weather-resistant coatings.
4. Ease of Assembly:
Nobody wants to spend hours trying to assemble their rebounder. Look for models that are easy to set up and require minimal tools or expertise. Ideally, you want a rebounder that can be set up quickly and easily, allowing you to focus on practicing rather than assembly.
Top Lacrosse Rebounders
Now that you understand the benefits of using a lacrosse rebounder and what factors to consider when making a purchase let’s explore some of the best rebounders available in the market:
1.
STX Bounce Back:
– The STX Bounce Back rebounder is a popular choice among lacrosse players due to its sturdy construction and versatility.
– It features a heavy-duty steel frame and a high-quality nylon rebound surface, making it durable and long-lasting.
– The rebound angle is adjustable, allowing you to practice different types of passes and shots.
– The rebounder is also easy to assemble and can be folded for storage or transportation.
2. Gladiator Lacrosse Professional Rebounder:
– The Gladiator Lacrosse Professional Rebounder is designed for both outdoor and indoor use, making it suitable for all weather conditions.
– It features a high-tension polyester netting that provides a consistent bounce and durability.
– The rebounder’s frame is made from 1.5-inch powder-coated steel, ensuring stability and longevity.
– The adjustable angle feature allows you to practice various skill sets, including passing, catching, and shooting.
3. Champion Sports Lacrosse Rebounder:
– The Champion Sports Lacrosse Rebounder is an affordable option for players on a budget.
– It features a sturdy steel frame and a taut nylon rebound surface for consistent ball response.
– The rebounder has four adjustable angles, providing versatility for different training drills.
– It is lightweight and easy to set up, making it suitable for players of all ages and skill levels.
Frequently Asked Questions
1. Can I use a lacrosse rebounder indoors?
Yes, many rebounders are suitable for both indoor and outdoor use. However, it’s essential to check the product specifications to ensure it is designed for the specific environment you plan to use it in.
2. Can a lacrosse rebounder help me improve my shooting accuracy?
Absolutely! Using a lacrosse rebounder is an excellent way to fine-tune your shooting technique and improve your accuracy. By repeatedly shooting at the rebounder, you can develop muscle memory and gain the confidence needed to score goals in a game.
3. How often should I practice with a lacrosse rebounder?
The frequency of your practice sessions will depend on your schedule and personal goals.
However, regular practice is important to see significant improvement. Aim for at least a few sessions per week to maintain consistency and progress.
4. Can I use a lacrosse rebounder to practice face-offs?
While a rebounder can enhance your hand-eye coordination and catching skills, it is not specifically designed for face-off practice. For face-off training, consider using a specialized training tool or working with a coach who can provide guidance.
Under pressure. The main mistakes in the selection and operation of balers
AGCO
How not to miscalculate the choice of a baler, how to set it up correctly and what mistakes should be avoided during operation, are told to the journal Agrotekhnika i Tekhnologii by experts from the manufacturers of this equipment: Rostselmash, CNH Industrial, AGKO-RM, Kun Vostok, John Deere, Kverneland, Krone Rus, Claas
Procurement, made during the short agronomic window allotted by nature, will feed livestock throughout the year.
The quality of animal feeding, their productivity and the economic well-being of the enterprise depend on the correct choice and uninterrupted operation of the baler.
The choice of equipment such as a baler is primarily based on the volume to be harvested, the type of feed, the crop and harvesting time. For example, bale machines are beneficial to use by farms with large volumes of harvesting.
For balers that harvest rectangular bales, the density of pressing is higher than for roll bales, compares Krone Rus’ sales representative for the Siberian Federal District and the Far East Federal District Konstantin Taskin. The same can be said about productivity: round balers stop moving across the field while tying, while square balers work non-stop. What’s more, one large hay and straw baler can match the performance of seven PRF balers.
Experts believe that in terms of volumes, the purchase of large bale machines is beneficial for those who harvest more than 10 thousand packages per season, and for whom the required work productivity is more than 40 tons per hour.
According to Radik Garaev, product specialist at CNH Industrial (Case IH, New Holland Agriculture), large square balers will be the best purchase for those farms that harvest straw on an industrial scale (for sale or for their own needs) or work under a contract during harvest season.
In addition, unlike rolls, bales are more convenient to transport and store: a more ergonomic rectangular shape allows you to optimally use the storage area (put bales in several rows on top of each other).
Another argument in favor of choosing a large bale press is the reduction of mechanical losses up to 2-3 times (especially legumes) due to the greater preservation of nutritionally valuable leaves, argues Sergey Sozinov, product specialist, harvesting equipment, AGKO-RM company .
However, when choosing such a machine, it should be remembered that packing in bales implies a denser filling (the density of hay pressing in bale balers is 30-50% higher than in roll balers), respectively, it is necessary to more carefully monitor the moisture content of the pressed material and carry out the removal bales from the field before the onset of precipitation.
This means that those enterprises where climatic conditions do not allow harvesting hay with a moisture content of less than 15-16% will have to use additional equipment for adding preservatives to feed, says Sergei Sozinov. On the other hand, the penetration of external moisture in a large dense bale is much more difficult than in a bale, which ensures better preservation of the feed.
For farms harvesting wet mowed or slightly dried mass, roll machines are more suitable, where it is possible to form a package with a loose middle, which will allow the hay to “breathe”, that is, to dry out in the package, advises Roman, product manager for forage harvesting at CLAAS Fedotikov.
Specialist of Kun Vostok on the green line (Kuhn forage and animal feeding equipment) Mikhail Bazan recalls that bales are 30-40% heavier than bales of the same diameter, therefore, when purchasing a super-productive baler, you need to remember that bales, formed by such machines can weigh up to 800-900 kg.
And therefore, the farm must have special vehicles (telescopic loaders, etc.) capable of loading such bales onto vehicles.
If the farm does not have loaders or self-loading carts for collecting rolls and bales from the field, then it is not advisable to buy a large baler, Rostselmash is sure. In such a situation, Prokhor Darmov, director of the Rostselmash marketing department, advises opting for small bale machines that produce packages weighing 25-30 kg, which can be easily carried by hand. And if you equip a small baler with an unloading device, you can immediately unload the received bales into the trailer.
Such machines are suitable for small farms with a livestock of 50-100 cows, or specialized farms that deal with horses, sheep, camels.
There is another interesting technology that involves pressing a group of small ones into one large bale. In this case, the length of small bales can vary from 0.30 to 1.35 m. This allows you to make traditionally large bales up to 3.
2 meters in size on the field and reduce transport costs for removal from the field, and on the farm to crush them into more small to facilitate physical labor when distributing feed.
Bale chamber selection
Most manufacturers divide models into classes (segments) by the volume of the workpiece, and, accordingly, by the life of the machine. Small volumes – easier equipment, thinner chains and sprockets. Larger volumes – more powerful units and structures are installed.
Ivan Bayak, a specialist in combines and forage harvesting equipment at John Deere, classifies round balers as follows: if the harvesting of an enterprise is up to 1 thousand rounds per season, then it is quite possible to get by with a machine with a basic configuration. If the farm needs to harvest 1-5 thousand bales per season, then more advanced machines of medium specification are needed, allowing the formation of bales up to 1.5 m in diameter with a fixed or variable pressing chamber.
As Roman Fedotikov from CLAAS explains, mid-range balers have mechanisms designed for longer operation (reinforced rollers, larger diameter chains, larger belts, etc.), as well as a set of options to reduce machine maintenance time and facilitating the work of the mechanic.
CNH Industrial specialist Radik Garayev believes that the optimal size of rolls should be 1.20 x 1.25 m. This, according to him, is due to the convenience of transporting such blanks. Two rolls 1.20×1.25 m wide will amount to 2.5 meters, which is the permitted overall width on unaccompanied public roads.
Do not forget that the choice of a roll press with a certain type of press chamber is closely related to the crop to be harvested and the moisture content of the feed. In general, such machines are produced with a fixed (constant) or variable (variable) chamber.
Constant chamber
A fixed (constant) chamber forms bales of the same size, it is easier to maintain and repair and is cheaper than variable machines.
Fixed chamber balers, in turn, are also divided into several types. For example, there are machines with chain-and-slat pressing mechanism that work very well on dry matter, says Alexey Letyagin, head of sales at Kverneland. According to him, the bar ideally picks up dry material (straw, hay) and rolls it into a roll, however, on wet material (haylage, silage), the pressure of the bar is not enough to tightly crush the mass and prevent oxygen from entering the package. Due to the fact that the bar on such material is bent, the chains are stretched, the machine quickly breaks down, and the forage is of poor quality, the expert states.
It is absolutely inexpedient to use such machines when harvesting legumes with delicate foliage (for example, alfalfa, etc.) for hay, since chain-slat cameras severely injure the mass, knocking down valuable foliage, Mikhail Bazan warns. And if you miss the deadlines for harvesting, then only stems will fall on the fodder table for cows.
Therefore, this type of camera (one of the most common today) is good for working with straw and hay from cereals.
On the contrary, rolls with a roller compaction chamber (rolls are involved in the formation of the roll) have proven themselves well when working with wet mass, Alexey Letyagin continues. They are suitable for silage harvesting, having a decent compaction density. But at the same time, they do not work well with dry mass, since, due to their design features, they have the effect of “knocking down” a lightweight substance, and not twisting it into a roll. Because of this, the roll often turns out to be crooked or loosely packed, Letyagin notes.
Thus, if the harvesting of bales with heavy haylage or silage with a moisture content of 40-60% prevails on the farm, a roller chamber that is resistant to such loads will be a good choice, Ivan Bayak has no doubts.
The combined bale chamber in round balers is a combination of two mechanisms: chains with slats and rollers (or belts) with rolling pins.
This is the most versatile option, Letyagin believes: the main pressing load is on the rollers, while picking up and twisting the mass takes place in a small section of the bar. As a result, the machine performs well with both dry and wet stock.
For farms growing legumes, Roman Fedotikov recommends cameras with straps. They can be either constant or variable. Such chambers have a large roll overlap area, and when working with them, there is less loss. They do not knock down leaves as much, carefully preserving the nutritional value of legumes.
The belt press chamber makes it possible to form dense bales from the beginning to the end of the process, which is also suitable for harvesting haylage, says Prokhor Darmov, director of the Rostselmash marketing department.
By the way, when working in arid areas and when harvesting straw, the machine has to be constantly cleaned (blown) from clogging dust and straw chaff in order to avoid fire, Aleksey Letyagin warns.
Variable geometry
Unlike a fixed chamber, a variable or variable bale chamber makes it possible to form bales of various diameters (from 1.2 to 2.1 m), which can be useful for packaging different types of feed (straw one size, hay another, etc.) .), if required by storage or transportation conditions. In addition, according to Letyagin, such chambers are good for harvesting haylage: pressing starts from the very middle, and the bale density will be maximum.
However, Ivan Bayak advises purchasing a chamber with variable pressing geometry for those who harvest haylage with a moisture content of no more than 40%. The reason is that on a heavy wet mass, the belts can experience significant stress, the specialist explains.
According to Ivan Bayak, on some models it is possible to press with different pressures: first 50 bar to get, for example, a bale with a soft center, and at later stages of bale formation, increase the pressing pressure to 200 bar.
Thus, the core of the roll has the ability to “breathe”, but at the same time the outer part of the roll will be dense and more moisture resistant.
There is another type of variable chamber – semi-changeable. The basis of this chamber is a fixed, expandable slat chamber. The mass is first pressed in a fixed chamber with a diameter of 1.2 m, and after the roll is pressed, it expands to a predetermined diameter, Letyagin says. Such machines, in his opinion, should be chosen by those for whom straw is the predominant product of harvesting: the packing density is combined with the absence of the need for constant blowing of the belts.
Prokhor Darmov from Rostselmash also advises not to forget that to get haylage you need a baler with a chopping machine. For hay, this function is not required.
Feeder selection
When choosing a baler, Ivan Bayak advises to pay attention to the feeder: it is located between the stock pick-up and the baling chamber and has the task of actively feeding the mass into the chamber.
Such nodes are finger and rotary.
On simple balers, making up to 1 thousand bales per season, finger feeders are installed. But if the productivity of the machine is higher, there is a need for a more active feed, explains Ivan Bayak. The tine feeder is better suited for light swaths of bean hay (alfalfa, clover, etc.) as it handles the stock more gently. And where the humidity is higher (25-40%), it is more efficient to use a rotary feeder with a mass grinding system, which will provide higher productivity and pressing density.
Rotary feeders with a grinding system can be used on machines with chambers with both fixed and variable geometry.
Tractor selection
Even at the stage of choosing a baler, you need to think about the aggregation of this machine.
Farmers, when choosing a pick-up, are often guided by the value of the total power of the tractor or on the PTO, while when driving on a flat surface, the tractor requires at least 14-15 hp.
for traction. And when moving along an inclined path, about 20-25 hp are needed for these purposes. Accordingly, if according to the instructions for the operation of the baler, a tractor with a power of 82 hp is required, then MTZ 82 will not be enough. When moving, its power is not enough to operate the press, moreover, if the unit is equipped with mass grinders, it must be taken into account that this will further increase energy consumption.
You need to be especially careful when choosing a tractor for large-pack heavy presses, for which the power reserve should be from 130 hp. for models 80-90 up to 200 hp for models 120-90 hp, Konstantin Taskin from Krone Rus pays attention.
But at the same time, one should not greatly exaggerate the power of the tractor, otherwise it will not “feel” the unit, Mikhail Bazan warns. A tractor two classes more powerful than required will drag the unit over the swath at high speed, resulting in crooked and poorly formed bales.
Net or twine?
The type of binding of the final roll is important for further storage and transportation of blanks. There are three options for packaging the harvested feed: tying with twine, netting or wrapping in film.
Twine wrapping is cheaper. But the main thing is that the cost of rolls wrapped in this way is 30-40% lower than rolls wrapped with mesh. However, net packing is faster and of higher quality. According to Rostselmash calculations, it takes only 1.5-2 turns and 5 seconds to wrap a standard roll with a diameter of 1.2 m into a net. Whereas in order to wrap the roll with twine, 8-10 turns of the thread are needed, which takes an average of about 1 minute.
With a double-filament wrapper, the process can be reduced to 20-25 seconds, but even this indicator is inferior in speed to net wrapping.
Many farms, in an effort to save money, use domestic twine and netting, which reduces the cost of producing one roll by about 20% compared to imported polymer analogues.
Sergey Sozinov from AGKO-RM notes that large square balers place high demands on the strength of the twine – the breaking force must be at least 200 kg per knot. Don’t skimp too much on twine, this can lead to reduced productivity through more downtime due to troubleshooting. In addition, when the finished bale is tilted, poor-quality twine can break, which will make the bale more loose, vulnerable to moisture and less convenient for transportation and storage.
In addition, with such replacements for analogues, it is necessary to monitor the condition of the knotter elements, since some Russian twine analogues contain too rigid materials and can disable knotting equipment, Konstantin Taskin warns. For example, the guide wheels of the distribution mechanism of knotters sometimes fray, breaking in half, in just a year of using Russian twine, and not only on Western European presses, the specialist notes. According to his observations, such a problem also happens in the Belarusian PRF.
On domestic polymers
Experts recommend carefully studying and comparing the characteristics of polymers when using analogues. Everything should be the same: tensile strength, texture, tension density and the thickness of the thread itself. However, according to Roman Fedotikov, the true quality of twine can only be verified empirically.
When replacing the net, Ivan Bayak advises, in addition to the characteristics specified in its specification (the width of the net must correspond to the width recommended by the baler manufacturer, the strength characteristics must correspond to the original net), to evaluate its oiliness. If the mesh contains a lot of oil (when compressed, it remains on the hands in a large amount), then it will slip on the feed rollers of the packaging system, which will lead to poor packaging quality (insufficient number of mesh turns). In addition, it is worth paying attention to the thickness of the threads, their pitch.
They should also be as close as possible to the grid values that the manufacturer recommended for use on the machine.
At the same time, Ivan Bayak notes that a mesh with a diagonal weave between the main threads is stronger and better fits the roll, and if there are elastic threads along the mesh cut in the sidewalls (for example, CoverEdge tm ), then such a mesh holds and closes the edge of the roll very well.
For those who often change polymer manufacturers (both net and twine), Mikhail Bazan advises to control the position of the bale pretensioner. At the factory, the tension in this node is set to base values, but when changing polymers, its position must be changed and adjusted to the new values experimentally, he says. For example, if the top layer of the mesh comes off in a roll, it means that the pretensioner is not properly tensioned, and if the mesh burst during unloading, it means that it was overtightened, explains Bazan.
When wrapping in film, experts advise remembering that a roll falling from a great height, especially on sharp stubble, can cancel out all the work on haylage harvesting – the film will break through, the feed will be spoiled.
Therefore, when choosing a pick-up with the function of simultaneous film wrapping, it is advisable to order a rubber ramp complete with the machine – walkways along which the bale can gently roll onto the field without the risk of being pierced.
And it is even better to purchase the option of “reversing” rolls, experts advise. In this case, the roll stands on the end and a breakthrough is practically impossible, since at the ends of the roll there are several times more layers of wrapping with a film.
When packing with a film, from 4 to 10 layers are wound. In addition, the gripping of such rolls during loading must be carried out by special equipment with soft edges. It is desirable to store such rolls in a vertical position.
Square and round balers.
General information about hay pressing
Since hay (as well as straw) has a low specific gravity, it is desirable to compact it by pressing for ease of storage and transportation.
Pressing is one of the ways to compact plant feed, along with granulation and briquetting. Pressing is carried out by means of mechanical compression of loose hay under pressure, followed by binding of the obtained rectangular blocks (bales) or cylindrical rolls.
Depending on the moisture content of the feedstock and on the climatic zone in which the forage is harvested, pressing can be performed with varying degrees of intensity. At the same time, low (up to 100 kg / m 3 ), medium ( 100 … 200 kg / m 3 ) and high ( 200 … 0 ) pressing density.
Low density of hay and straw pressing is recommended for regions of steppe and desert zones;0197 40 % followed by drying with active ventilation.
The average density of hay and straw pressing is most applicable in the middle latitudes (central regions of the country) with a mass moisture content of up to 25 %. With such compaction, the possibility of further drying of the raw material by active ventilation remains.
When the moisture content of raw materials is up to 22 % in desert and desert-steppe zones, a high density of pressing is used, which makes it economically feasible to transport the harvested feed over fairly long distances.
If more intensive compaction of the feed is required, briquetting or granulation is used.
Granulation – compaction of feed components or mixtures ground into flour to a density of 900…1300 kg/m 3 . The shape of the granules can be cylindrical or shaped and have an average size of up to 20 mm in diameter. When granulating the feed, its moisture content is adjusted to 14 … 16 %.
Briquetting – compaction of grass or straw cutting, feed mixtures, including roughage particles size 20…70 mm in blocks of cylindrical (or other) shape with a diameter not exceeding 80 mm . Feed density during briquetting – 500…900 kg/m 3 .
Pressing does not require pre-chopping of feed, so both hay and straw are compacted as raw materials harvested from windrows in swaths.
To compact hay and straw by pressing, balers are used, which, depending on the principle of operation and the final shape of the compressed mass, are piston and roll. Piston balers are commonly referred to as square balers.
Regardless of the fundamental design, all modern balers include the following structural elements:
- pick-up plants from windrows;
- devices for pre-compaction of mass;
- loaders (packers) of compacted portions into the pressing chamber;
- pressing devices;
- knitting or wrapping apparatus;
- drive mechanisms of working bodies and process control.
***
Piston (bale) balers
Piston balers compress hay or straw into rectangular bales of various sizes. Small bales weigh up to 35 kg , large bales up to 750 kg . Balers for small and large bales have differences in design features.
Small bale balers
Small bale balers compress the mass in a special chamber without pre-compacting. During the movement of the unit, the fingers of the drum pick-up 5 ( fig. 1 ) the plant mass is fed from the swath to the filler 3 , which pushes the mass into the pressing chamber B formed by the press body, the end face of the piston 4 and the previous pressed mass. During this period, the piston idles.
With each working stroke, the piston, having captured a portion of the mass, moves it along the chamber. Through the chamber from the clamp 2 along the guide rollers of the needle 7 to the cassette 6 passes the splits. The compressed mass moved by the piston pulls the twine out of the cassette.
As the length of the bale increases, the twine goes around it on three sides. The teeth of the measuring wheel 1 engage with the ground. The moving mass turns the wheel, which after each revolution turns on the clutch for the drive of all elements of the knitting machine. The needles begin to move.
They pass through the slots of the press chamber and the grooves of the piston. The twine covers the bale in one or two planes from the side of the piston. The needles exit through the slots in the chamber lid, put the second branch of the twine into the knotter clamp and both ends of the twine are tied into a knot.
This completes the shaping and binding of the bale, after which the piston begins to compress subsequent bales, gradually pushing the finished bales out of the chamber.
When leaving the chamber, the bales enter the trays and are separated at the place of the bundle. Then the bales leave the trays on the field or are loaded into the containers of vehicles moving next to the baler.
We will consider the technical characteristics of balers for small-sized bales using the PPL-1.6M baler as an example.
PPL-1.6M baler
PPL-1.6M baler with side feed of mass into the pressing chamber forms bales of hay and straw 0.36 m high , 0.
5 m wide and long 0.5…1.0 m . Pickup width of the baler – 1.6 m , throughput – 8 kg / s , raw material pressing density – 100 … 200 kg / m 3 .
PPL-1.6M is aggregated with tractors of traction class 1.4. Operating speed of the unit – up to 9 km/h .
Ready bales can be stacked on the field or in the containers of a nearby vehicle.
During the operation of the baler, the allowable loss of plant mass and the number of unbound bales should not exceed 2 %.
***
Large Bale Balers
Large Bale Balers compress hay and straw into bales weighing up to 750 kg . Before pressing, the plant mass is pre-compacted. In such machines, the pick-up is located not on the side, but frontally symmetrically to the longitudinal plane.
When the machine is running, the fingers of the pick-up drum 1 ( fig. 2 ) pick up the swath, which is picked up by two side cantilever augers and narrows towards the center of the machine, where the loading window of the storage chamber A is located.
The mass is pushed into the storage chamber by the storage beater 3 . The fork loader arm is out of the chamber. When the mass density in chamber B increases to a predetermined value, the levers 9 are turned0197 4 , and the fork loader switches on automatically.
The compacted mass is fed into the bale chamber when the piston 5 is in the rightmost position. As the chamber is filled with mass, valve 7 turns and, at a given force, the piston drive mechanism is activated, after which the piston compresses the mass. At the same time, the tails of plants are cut with knives.
When the bale reaches the desired length, the measuring wheel 8 includes a knitting machine that ties a compressed bale with twine in four to six planes.
The degree of pre-compaction of the raw material is regulated by changing the tension of the valve springs, and the degree of final pressing – by bringing together the sealing strips 9 .
When pressing wet mass, the sealing strips converge more than when pressing dry mass. Automatic pressure regulators are also used. Such balers with bottom front feed into the bale chamber are more compact than those with side feed.
Pre-compaction reduces energy consumption for pressing, as well as for subsequent work on picking up, loading and transporting bales. In addition, the bales obtained on such balers are easier to divide into portions for distribution to animals.
Technical characteristics of balers for large-sized bales, let’s look at the example of baler PKT-F-2.
PKT-F-2 baler
PKT-F-2 large bale baler has a working width of 2 m , carrying capacity 10 kg/s and aggregated with tractors of traction class 1.4 or 2. The operating speed of the unit is up to 12 km/h . The baler forms bales with a height of 1.2 m , a width of 1.1 m , a length of 1.2…2.4 m and a weight of up to 50 kg with a raw material density of 150 kg/m 3 90 173 .
The finished bale is tied with twine in five planes.
Rated loss of feed during harvesting – no more than 1.5 %, the number of unbound bales must not exceed 3 %.
***
Knitting machines for balers
Bales of hay, straw and flax are tied around knitting machines consisting of a needle, clamp, beak, knife and their drive mechanisms.
The needle is an arcuate rod with a channel 1 ( fig. 3 ) and two twine holes 2 . It is driven by a lever mechanism.
Clamps are available in disc and disc types. The disc clamp of the McCormick system consists of a fixed plate 4 with a slot 5 and a rotating disc 3 which is provided with a series of projections and recesses. The plate is pressed against the disc by hook 6 . The twine is placed with a needle in the slot 5 of the plate and is clamped between the plate and the disc when the disc is rotated.
On balers and flax harvesters, the disc clamp is mainly used.
The Dühring disc clamp is made in the form of two rotating discs 9 with six notches. Holder 9 is located between the disks0197 8 twine and bracket 10 . The twine falls into the cutouts and, when the discs rotate, is pressed against the holder by them.
The clamping force of the twine is changed by a flat spring 7 holding the holder between the discs.
The beak of the twine tying machine consists of the jaws: fixed 13 and movable 12 , hinged on the axle 14 . Roller 11 is mounted on the shank of the moving jaw, which rolls on the treadmill of the lever and closes or opens the jaws. The degree of twine clamping in the jaws of the beak is changed by a spring that presses the track against the roller.
Knife 15 in machines with a plate clamp is fixed. The rotating clamp disc and knife form a cutting pair that cuts the twine.
The drive mechanisms of the knitting machine receive movement from the tractor’s power take-off shaft through a gearbox, cardan, chain and lever gears.
The knotter mechanisms are set in motion periodically, after one revolution of the measuring wheel 1 ( fig. 1 ). The wheel with teeth enters the pressed mass and, when pushing the next portion, rotates through a certain angle.
The disks of the wheel shaft turn the engagement lever, which releases the two-arm lever. The stop of the two-arm lever disengages from the engagement lever and releases the pawl with the roller, which comes into contact with the drive honeycomb clutch. The torque from the clutch through the pawls is transmitted to the knotter.
When the cycle of the knitting machine is over, the switching lever returns to its original position, the pawl engages with it, and is disconnected from the knitting machine shaft. The clutch continues to rotate freely.
Operation of the bale knotter
The operation of the knotter is clearly shown in fig.
4 .
Position I – the needle is working. The clamp and beak are included in the work. The rotating clamp disk grabs the second strand of twine and clamps it. The beak turns, its jaws are covered with twine and slightly open, after which the twine is dropped from the stop.
Position II – the needle makes a stroke. At the same time, she covers the bale with twine, lays its upper branch on the jaws of the beak and brings the second end of the twine to the clamp.
Position III – needle completes its stroke. The clamp and beak are included in the work. The rotating clamp disk grabs the second strand of twine and clamps it. The beak turns, its jaws are covered with twine and slightly open, after which the twine is dropped from the stop.
Position IV – the needle moves in the opposite direction. The disk, having captured both branches of the twine, continues to rotate, the branches of the twine enter the open throat of the beak.
Position V – the needle continues to move to its original position. The beak makes a full turn and stops. His jaws, closing, pinch the twine, after which the knife cuts one thread of the twine. The bales, pushed by the piston, remove the loop from the beak, and the pinched strings of the twine are tightened, forming a knot.
For tying bales, use twine with a diameter of 1.8…3 mm . The breaking force for tying flax bales must be at least 250 N .
Unit problems and their causes
The performance of square balers and the quality of forage harvesting are largely determined by the reliability of the knitting machine. Allowed up to 3 % loose bales.
The non-ties of the knot depend on the adjustment of the mechanisms of the twine thread guide, the knotter and the drive of the knitting machine.
Possible causes of node miscommunication and ways to eliminate them are given in table 1 .
Table 1 .
Causes of non-connection of the node and ways to eliminate them.
Symptom | Twine ends condition | Causes of failure | Remedy |
Knot tied on one strand of twine hanging from the beak | Twine ends cleanly cut | Excessive thread spring tension and weak clamp | Decrease thread guide spring tension to 20…40 N (twine pulled out of bucket) or increased to 150…200 N (twine pulled out of clamp) |
No knot, twine on bale | Twine ends cleanly cut | Weak clamp spring tension | Increase clamp spring tension |
No knot, twine on bale | One end of the twine is loosened | Increased clamp spring tension | Reduce clamp spring tension |
No knot, twine on bale | Both ends of the twine are cleanly cut with traces of an untied knot | Beak jaw loose | Increase the tension of the beak spring, at which the knot comes off the beak with a force 80…100 N . |
Knot tied, broken twine hanging from beak | Twine ends cleanly cut | Beak jaw too tight | Decrease beak spring tension |
Sliding loop knot, twine trailing behind the bale | One end of twine not cut | Needle does not insert twine into clamp | Change the length of the connecting rod of the needle drive mechanism |
In addition to the reasons listed above, bale binding is impaired when the knife blade becomes dull. With a blunt blade, knots with frayed ends precede the tie.
Stable operation of the knitting machine is possible only with the obligatory coordination of the interaction of all its elements. The moments of the start and stop of all elements of the knitting machine are depicted by a cyclogram, on which the beginning and end of the movement of the needle, clamp, beak, drive enable lever, etc.
are applied. moments, the cause is identified, after which the apparatus is adjusted.
***
Round balers
Round balers roll hay and straw into cylindrical bales in variable or fixed section balers.
Roll presses are used for low to medium densities. Leaves are better preserved in rolls, as they are wrapped inside. They are less energy intensive compared to piston balers.
Due to the lower density of the bales in the middle and the higher density in the peripheral zones, the plants dry out faster in the field, and the hay is stored in them for a longer time without shelter. In addition, rolls are more convenient than bales to use when distributing feed.
In foreign balers, chambers of constant cross section are widely used, formed by steel rollers or a number of conveyors located along the periphery of the chamber.
Beltless balers are simple and reliable.
Variable chamber balers
Variable chamber balers form bales between belts 6 and 10 ( fig.
5 ). When the machine is moving, pick-up pins 1 lift the crop from the swath and transfer it to the belt conveyor 10 . Between this conveyor and drum 11 the plant layer is compacted and then twisted (loop area A ) by pressing belts 6 and 10 .
As the bale is formed, the size of the loop increases by turning frame 3 clockwise. The resistance to frame rotation depends on the compression force of the spring 5 and the resistance of the oil pushed out of the cavity 1 hydraulic cylinder 16 to hydraulic accumulator 2 . The pressing density depends on this resistance.
Density is regulated by a spring 14 , pressing the check valve 13 , and controlled by a pressure gauge 12 . The maximum pressure must not exceed 5 MPa .
When the diameter of the bale has increased to the set size, the device is switched on, wrapping the mass in several turns of twine.
Wrapping is carried out with the unit stopped. Throw out the roll of pressing belts when the frame stop 3 releases latch 8 from valve 7 . The valve rotates about the axis O under the action of a compressed spring 5 , releasing the formed bale to the ground.
The frame is returned to its original position by the hydraulic cylinder rod, which moves under the action of oil coming from the hydraulic accumulator to the hydraulic cylinder. If necessary, valve 7 is turned, supplying oil from the tractor hydraulic system through line 20 . In this case, the oil, overcoming the resistance of the shutter spring 18 and moving the piston 19 , enters the cavity II of the hydraulic cylinder 16 .
If the tractor hydraulic system is not used, the spool of its hydraulic distributor is set to the “floating” position. In this case, the spring 18 moves the shutter piston 19 to the left position, informing the cavity II of the hydraulic cylinder 16 through the breather 17 with atmosphere, whereby the resistance of the stem to movement when the valve is lowered is reduced.
For pressing wet (up to 45 %) grass, balers are equipped with devices for the dosed introduction of chemical preservatives that prevent damage to the mass and loss of nutrients during long-term storage of feed.
Round baler PRP-1.6
Round baler PRP-1.6 is aggregated with tractors of traction class 1.4 and forms rolls with a density of 100…200 kg/m 3 , length 1.4 m , diameter 1.5 m and weight up to 500 kg .
The capacity of the baler is 7.5 kg/s , the speed of the unit is up to 9 km/h . The energy costs for the operation of the unit are 4.0 … 4.5 MJ / t .
Feed losses during picking and pressing – up to 2 %.
***
Fixed chamber balers
Balers with a bale chamber of a constant cross-section are conveyor and roller.
Round baler PR-F-750
On fig. 6 shows a diagram of a PR-F-750 round baler with a chain-roller conveyor.
The crop material is picked up from the swath by the drum pick-up 1 with spring tines. The mass flows to the pressure grid 2 and then to the feed rollers 3 and 6 . When chamber 9 is full0197 5 the mass is driven by rollers 3 , 6 and conveyor belt 4 .
The chamber space is filled first. Then, as the force increases, the roll is compacted (especially the outer layers), and its central part remains less dense.
When the density reaches the set value, the roller 3 activates a signaling device and the bale is wrapped with twine. After winding, the rear wall with a chain-roller contour rotates about the hinge axis O and rollers 6 unload the bale into the field.
Round baler PR-F-750 is aggregated with tractors of traction class 1.4 and 2. Throughput – 7.5 kg / s , energy consumption for the operation of the baler – 1.7 … .
The parameters of the rolls formed by the baler PR-F-750: length – 1.
5 m , diameter – 1.8 m , weight – up to 750 kg .
Bales begin to be wrapped with twine at a specific bale density setting when a signal is given. The machine operator stops the unit and turns on the winding machine. The incoming crop grabs the hanging end of the twine and the rotating bale begins to wrap.
The number of turns of twine on a roll is changed by setting different twine feeding modes. At the end of the winding, the twine is cut with a knife. The twine tension is changed by a brake.
After the twine has been cut, the machine operator opens the rear wall of the bale chamber with a hydraulic cylinder and the bale is unloaded by the lower rollers 6 ( fig. 5 ) onto the field. Then the cycle of work is repeated. For wrapping a ton of feed compressed into rolls, 0.5 kg twine is consumed.
***
Forage harvesters
Main page
- Abiturient page
Remote formation
- Group TO-81
- Group M-81
- Group TO-71
Specialties
- Veterinary
- Agricultural mechanization
- Commercial
- Maintenance and repair of vehicles
Academic disciplines
- Engineering graphics
- MDK.
