The principle of operation of a rotary mower
There are a wide variety of mowers on the market for agricultural tools today. It is the rotary devices that are most popular. Thanks to their design, they have high productivity and are easy to use both on a large tractor and on a trailer.
The principle of operation of a rotary mower is to produce rotary movements in a rotor that has a round shape.
The rotary mower has the form of a rectangular bar, to which rotors with knives are attached. It is they who are responsible for the correct cutting of plants.
Rotary mowers have become very popular due to their economy. The fact is that these devices use direct energy that comes from the tractor. Therefore, they do not need to generate a certain type of energy for their work. At the same time, productivity increases several times. These mowers are used in the process of mowing grass, weeds, lodged plants, they are called not only rotary, but also rotary.
If we compare a rotary mower with alternative options, then the first one. Efficiency is more than 70%, while others have up to 40%.
The rotary mower is attached to a transport device, which is a tractor, mini tractor or tiller.
There are three types of such mowers, these are devices:
- trailed type;
- semi-mounted type;
- mounted type.
Rotary mowers of the first type are attached to the transport using a three-point scheme, so there is a possibility of adjusting the angle of inclination of the device.
Mounted mowers are ideal for working on small plots of land. The use of semi-mounted devices is recommended on huge areas, and trailed rotary mowers are used to work on uneven ground.
The rotary mower has a fairly wide range of applications. She perfectly mows the grass for its further laying in rollers. In addition, rotary mowers are distinguished, which not only mow the grass, but also chop and collect it. The principle of operation of such a device consists in cutting plants, feeding them to special knives, which carry out shredding, transportation in a container.
Unfortunately, most owners of trailers and mini tractors do not always use them to their full extent, and in order to mow the lawn or field they hire other equipment. Although, it is quite possible to do this with a rotary mower. The cost of such a tool is prohibitively high, so it is much more profitable to build it yourself. How to make a rotary mower from improvised means, we will consider further.
Features of rotary mowers
In general, there are several types of mowers for mini tractors or tillers that you can build yourself. Since it is in this way that it will be possible to achieve the greatest savings in money, and at the same time get a high-quality tool.
Mowers that are made at home are:
The basis for a rotary mower is a metal welded structure in the form of a frame. For its manufacture, the presence of metal corners with a standard size of 40×40 mm is required. Body sections are installed on the structure to fix the wheels. After that, you should independently choose the type of the working part, which depends on the place of work of this tool.
- chainsaw gear chains;
- two discs removed from the seed drill.
Use only hardened steel for knives. Each disc must have four knives.
Holes for knives must be drilled on each of the discs; their diameter should not exceed six millimeters. The knives are fixed using a shank. In this case, it is necessary to leave a small gap between the knife and the mount, its thickness should be two millimeters greater than the thickness of the blade. In addition, you should take care of installing a protective case.
Rotary mower with your own hands
The design of a home-made rotary mower for a mini tractor includes knives that ensure mowing of grass. The knives are fixed on a special disk device. A power shaft is used to provide movement. Sliding the mower on the surface of the ground is carried out using the lower discs.
For the manufacture of a welded frame, use corners, it is possible to use old scrap metal. To save time on making knives, use an old rotor from a tractor. But, in this case, in order to improve traction and make the mower more efficient, the tractor rotor should be shortened by a few centimeters from 2 to 4, depending on the power of the minitractor. This mower model has a cant height of no more than 350 mm.
For self-construction of the rotor, you should take a metal sheet and cut out two circles in the form of disks from it, each with a diameter of 390 mm. To save on the purchase of a metal sheet, it is possible to use the bottom from an old barrel. Legs are welded to the discs in the center, ensuring their rotation. Due to the influence of centrifugal force, the process of mowing the grass will be carried out.
Carefully monitor the strength of the fastening, during the process of welding the legs, since the connections must be as reliable as possible.
A disc taken from a peeling device is suitable as a lower support; its diameter should not exceed forty-five centimeters. An old metal pipe with a cross section of no more than three centimeters is suitable as an axial shaft. To manufacture the structure, the presence of bearings 80 106 is also required. A hole should be provided in the pipe section for installing the lower bearing, a second bearing is installed on the surface of the pulleys. This requires a welded pulley.
On the previously prepared shaft, put the disc on which there are already knives. Then, using a welder, weld the pulley to the pipe. Rotation of the structure will be carried out by two bearings.
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This model of a rotary mower is characterized by the presence of a grip of 1.10-1.15 cm, while the number of shaft revolutions reaches 1500 pieces. The mower should be installed and then welded onto a welded frame made of metal corners. To ensure safe operation, care must be taken to install the cover. It is recommended to install an additional bearing at the junction of the tractor and mower, directly at the point where the belt is connected to the figure eight, which will make this connection more durable and provide softness in the operation of the mower, in addition, the friction of the belt will be reduced.
To simplify this model of a rotary mower, the lower disc should be welded directly to the metal structure from the corner.
Advice: In the absence of skills in working with a welding machine, it is better to entrust this procedure to an experienced welder to avoid damage to the device and make it more durable in operation.
This model of a rotary mower allows mowing at a speed of 8-12 km per hour. A fast mowing process will crumble the grass, a slower one. holistic. Such a mower is able to cut vegetation by 6-8 cm.It is used for mowing grass or removing weeds from backyards.
Homemade rotary mower from scrap materials
Materials for making:
- four wheels of the same size, up to 45 cm in diameter;
- two axles for mounting wheels;
- a metal sheet;
- the bottom of an old metal barrel;
- four knives;
- nuts and screws for fixing knives;
- welding machine;
- handle for control or pipe for making it.
Instead of wheels, it is possible to use an old baby carriage with metal wheels. A chainsaw is fixed on it, which will rotate the so-called rotor.
A temporary transfer from the pulleys will help to replace the tire. A metal sheet is installed on the lower part of the stroller, which must be cut out with an angle grinder, in accordance with the dimensions of the stroller. In addition, it is necessary to cut the bottom in the form of a disc from a metal barrel. Cut out a casing from another barrel or improvised means, which will have a diameter slightly larger than the disc. It is possible to manufacture an aluminum canopy that will help to lay the cut grass. A handle is used to control the mower, if there is one from a stroller, use it, otherwise, build a handle yourself. Attach knives to the disc, make sure the connections are tight. Further, all parts are assembled by welding. First, a metal sheet is attached to the stroller, then a casing is fixed on its surface and a disc is inserted into it. During the start of the chainsaw, this mechanic rotates and mows the grass.
- The principle of operation of a rotary mower
- Features of rotary mowers
- Rotary mower with your own hands
- Homemade rotary mower from scrap materials
- The cost of purchased rotary mowers
The cost of a rotary mower primarily depends on its working width. In addition, the price is influenced by:
- number of rotors;
- the quality of the material used in the manufacturing process;
- manufacturing firm;
- availability of additional functions;
- mower type;
- rotational speed;
- the height of the grass she mows;
- weight, etc.
The average cost of a rotary mower for a tiller is from 100. At the same time, it is equipped with two rotors, has a capacity of 3500 rpm. The working width of such a mower is 80 cm.
The cost of a rotary mower for a minitractor is from 300 At the same time, it has a slightly large grip and dimensions. Also, such mowers are characterized by higher productivity and are suitable for processing medium-sized areas.
A rotary mower for a tractor is much more expensive, its average price is 1500. At the same time, the working width is doubled or even tripled. This equipment is designed to work on large areas of land.
Rotary Mower Specifications
- devices that mow and lay grass in swaths;
- devices that mow and lay grass in windrows;
- rotary mowers for tiller, which mow and chop the grass.
Some models submerge, flatten the grass while mowing and laying in the swath. Taking into account the method of installation, experts distinguish such devices as trailed, semi-mounted and rotary mounted mower.
The device in question consists of a rear, front and side cutting system. Apparatus with 1, 2, 3 or 5 bars are installed on the tractor. The rotor scythe is launched by the action of the shaft or the wheels of the tractor.
In the photo Rotary mower for a mini tractor
The considered units are installed on the tractor and the trailer in a horizontal position. The knife and connecting rod must move in the same plane. For work on a small plot of land, a Polish tractor mower is used. Front mounted model divides the land into corrals.
Before buying a rotary mower for a tiller, the principle of its operation is studied. If it is necessary to mow sown high-yielding and lodged grasses, weeds, then a rotary apparatus is used. Such a mower fixes itself to the tiller or tractor. The equipment consists of a bar to which the knives are attached.
The device with a grinder consists of a rotor, frame, drive mechanism, pipeline. The principle of operation of a rotary mower on a tiller: when the machinery moves, the vegetation is tilted with a shield, then mowed with a knife. The grass rises, is crushed, falling into the container.
If it is necessary to quickly cultivate the land, then a Polish mower for a tractor or tiller with several cutting elements is used. Experts recommend buying such devices taking into account the following criteria:
- cutting height of the grass;
- knife speed.
The plus of a rotary mower for a mini tractor is the presence of a damping device that protects the knife from various obstacles. Experts refer to the additional advantages of the device:
- easy to operate;
- high security;
- saving time.
Working on your own land plot is a rather difficult task. In order to facilitate the whole process, special labor devices were invented, which over time evolved and were automated.
However, in addition to large-scale production units, there is a need for individual means of land cultivation, which will be distinguished by mobility, economy, environmental friendliness, etc. And at the same time, without fail, the entire agricultural tennik must cope with the task assigned to it with maximum efficiency, be it a tiller or a mower, which will be discussed today.
The use of a self-made rotary mower requires strict adherence to safety precautions and operating instructions. Do not neglect the recommendations for its use, as, in the end, this will lead to the loss of the mower or damage to parts and parts. And don’t forget, if you fail, you can always click here for a list of inexpensive electric lawn mowers that can get professional grass trimming for your area.
How to properly assemble a Polish rotary mower
Model range of units
Rotary tiller mower can be presented in the form of the following models:
- “Zarya”. is installed using a reducer and additional brackets. The device is used for mowing grass, small shrubs and grain. The width of the structure is 70-80 cm. If necessary, the device is used when processing stony soil;
- “Zarya 1”. used for soil cultivation in a hard-to-reach place;
- “KNS-0.8 Strizh”. allows you to mow grass 2 m high;
- “KM-0.5”. a compact model with a cutting width of 50 cm.
Models of rotary mowers for mini tractors:
- Z083 MINI. designed for mowing grass over a large area. This model is not used on mountainous terrain;
- DM 135. mows and places the grass in the mow. The model is equipped with 8 knives;
- “KP-2.1M”. mounted rotary mower for mini tractors allows you to work the land with solid objects;
- Z-069 Wirax is a Polish model with which you can work a large area. The grass is mowed and laid in swaths;
- KRN-2,1B. mows the grass in a difficult area;
- SB-1200 is a semi-mounted model of Czech production. With this mobile structure, you can repeat the topography of the soil.
Pictured Mower for tractor Z-069 Wirax
If there is no possibility of buying a factory-type rotary mower, or if you want to create it on your own, you need to focus on the basic points, without which your efforts to create a mower from the rear axle with your own hands will be zero.
A homemade rotary mower, as already described above, is used for mowing grass, while a lower fit of the blades will allow you to mow the lawn. It should be borne in mind that a mower of this type will mow tall vegetation and literally chop up small-type grass.
As a prototype, we will consider the model required for the tiller. As the main parts, it is worth using 2 discs from a grain seeder, as well as a chain and a gearbox from a chainsaw. The best material for knives would be 65g hardened steel.
The video shows one of the options for creating a rotary mower with your own hands.
A total of 4 knives must be placed on each disc. This is due to the holes previously drilled on the disc with a 6mm diameter solid drill. The fastening of knives to discs is carried out using a tire.
Leave the space between the blade and the knife a millimeter or two more than the width of the knife. The axle is tightened to the stop with the disc. Do not forget to install a protective housing on the drive.
The above actions will allow centrifugal force, when rotating, to straighten the circular knives, which will cope with their main task. mowing. In addition, it remains possible to rotate the knives for a full revolution (360 degrees), which will make it possible to secure the knives in a situation where they collide with hard earth layers.
In order to make an axle for attaching knives, they resort to strong carbon steel. The axle diameter must be at least 8mm. To preserve the free space in which the knives will move, use the method of tightening the axis until it stops with a disk.
The disks are attached to a welded frame with the subsequent establishment of communication with the drive from the PTO (power take-off shaft). Disc rotation should occur towards each other, which will group the cut grass in rows. But, if you intend to build a rotary mower with your own hands for a mini tractor, then first read this article.
Reviews of the mower Z-169 Wirax
Multifunctional mini tractors are slowly entering the life of the country house, and perhaps the most pressing problem is mowing grass. This is not surprising since the grass grows all over the place and you don’t need to plant it.
For mowing the grass of mini-tractors, segment mowers and discs are used. over, disc mowers are more efficient. Among the offered options for disc mowers. the most reliable and efficient rotary mowers Wirax 1.3 made in Poland. This small disc mower is designed for 20 horsepower mini tractors.
For large tractors, Wirax disc mowers with a grab are manufactured. 1.65 and 1.85 meters. Wirax Z069 / 1. is made with a short arm for small mini-tractors and weighs 280 kg. Undoubtedly, not all mini-tractors are suitable with a large shoulder mower, since its weight is 300 kg, but its reliability lies in the use of cardan shafts and bearings, which do not differ very much. Wirax. 1.35 is designed for cutting high-yielding and powdery grasses and is suspended from the rear on tractors of the tractor’s articulated system.
The mower has two discs that rotate, from left to right, and from right to left, as a result, when mowing grass, they are inserted into the swaths for the convenience of further processing. The Wirax mower is equipped with a protective cover and a cardan shaft.
But let’s see what mower users have to say, taken from the popular Farmer forum: “Yesterday I mowed a Virax 1.35 mower with a DF244. I cut about 1.5 hectares a day. The field is unfamiliar, weeds, the height of the cow is 2 meters, in some places it was higher than in the cabin. On the 3rd lowered, on the 4th lowered tractor, it is hard, probably due to thick heavy grass.
1. I reiterate the recommendation to turn the blades upside down. So /-. Carrying a knife less. Only 2 knives per 1 plate, not 4. Knives that we move from one plate to another. they start working with a different cutting edge.
2. Cloth protection prevents it from happening. He waved a frame, and it had a banner cover on it. It gets in the way, you can’t see what’s going on, and contributes to the filling of thick grass between the drums. I only realized this from the black smoke from the chimney. The cover was removed nafig, well, I didn’t buy.
3. and unfamiliar area, it is convenient to mow the first passes from the front. We lower the bucket, bucket as low as possible, take the grass if there are obstacles. immediately felt. Then we go in circles on the newly cut strip.
4. There were nests, earthen stumps from meadow dogs. carries fluff. Bushes, birch shoots 1.5-2 centimeters in diameter. cuts without noticing.
5. To protect against obstacles (springs), you must pull out up to 5 centimeters from the maximum free position. otherwise small field irregularities are often taken into account.
6. I was glad that I took the DF with the cockpit. It will be very inconvenient to mow without a cab, mowing the grass dries out from the mower, and a lot of mowers rise.
7. The mower should always be scattered in neutral, smoothly and then started. “
“At that time, I was brought to Poland by a segment mower for 100, 800 UAH, after I completely swallowed it, mowed well, but it needs a level platform and standing grass, which was very afraid of hitting the ground on the cutting device, it worked for two seasons and sold for 350, after that I bought a new rotary cutter and forgot about all the problems associated with irregularities, ground from dug moles, grassy grass, etc. If there is a better opportunity to raise money and take it immediately, I recommend.
“Thank you, today I tried to mow, squinting normally, but very low (it cuts off any irregularities, hummocks), but how do I hold the grip with the mower? Fully descend or rise above the ground and how much distance? “
The company began its formation in 1994, when the first serial models of various agricultural equipment began to be produced. It was precisely this vector of development aimed at farms and their provision that was approved, which was the right decision at that time.
With the passage of time and the growth of production rates, the company began to open its factories in other locations in Europe. This decision allowed not only to increase the production of equipment, but also gave a considerable number of jobs where these factories were located.
Thus, the company, in addition to its main activity, also performs a certain social function, which is extremely important in these difficult times.
In 2012, Wirax merged its two branches located in Turkey and Romania to form one large corporation. The company cooperates with many Turkish manufacturers of machinery and related components to them, which allows it to respond in a timely manner to constant changes and new trends in this market segment.
“Wirax”. 1.65m is an excellent option for farms and individual farmers who value reliability and efficiency in the unit above all. Thanks to high-quality parts and a durable body, the mounted rotary mower Polish 1.65, will serve its owner for more than one year, regularly performing its main tasks.
Characteristics of “Wirax”. 1.65m:
- weight. 300 kg;
- width of the mowed surface. 1.65 m;
- height of the mowed grass (min). 3.2 cm;
- the height of the mowed grass (max). 4 cm;
- rotation speed. 540 rpm;
- number of disks. 2;
- the total number of knives. 6;
- drive type. BOM.
If you still decide to give preference to Polish-made rotary mowers, then you need to know the basic models and their approximate prices. If you decide to give your preference to cheaper models, then you should familiarize yourself with a homemade rotary mower for a mini tractor.
Among some of the most popular models, there are two: “Wirax”. 1.65m and “Wirax”. 1.85m. Let’s take a closer look at the characteristics of each model.
Features of operation of rotary Polish mowers
Polish rotary mowers, as mentioned earlier, do an excellent job with their main job. mowing the grass surface over large areas of the area. But in order for this to last as long as possible and the operation of the mower was stable, it is necessary to follow some rules that can significantly increase the service life of a single unit.
Initially, after the very purchase of the unit, the mower is disassembled. The package includes detailed instructions with drawings that allow you to clearly see the entire assembly process. It is extremely important, at this stage, to carefully study the entire instruction, paying attention to all the assembly points, and only after that proceed to collecting the finished unit.
It is clear that a Russian person is not used to relying on pieces of paper, and he himself knows everything and knows how, but this is still not the case where one can treat the matter so naively. After all, not only the quality of the work performed, but also the safety of you and the people around you will depend on whether you assemble the Polish rotary mower correctly.
After the product is assembled and ready for use, you need to study all safety precautions from start to finish. This is no less important stage than the assembly of the unit, because the design of the Polish rotary mower contains cutting elements, from which almost anyone who will be in close proximity to the operating unit can suffer.
Next, you need to install the assembled unit in the correct position, i.e. so that the discs with cutting elements are parallel to the earth’s surface. Then, we set the main frame of the device strictly perpendicular to the axis of the tractor.
We put on the end of the propeller shaft on the PTO of the tractor, i.e. to a unit that transfers rotation from the engine to various attachments and trailers. The unit brought in this way into the working position will perform its main work on mowing the grass with high quality.
The Polish rotary mower, the device of which we described earlier, does not present any particular difficulties in operation. You just need to follow certain measures and manipulations, including:
Regularly check the cutting system, which consists of knives, for galling and wear. If necessary, they can either be sharpened on the machine, or replaced with new ones.
It is important to monitor the condition of the belts, whether they are punctured or cut, and whether they are properly tensioned. If you are still not familiar with lawn mower belts, please click here.
Periodically, you need to check the level of the transmission oil, which is located in the gearbox on the unit frame. To do this, you just need to unscrew the cap and check the condition, as well as the presence of oil.
By observing these simple steps, you can significantly extend the service life of Polish rotary mowers, and also avoid possible breakdowns, which may be completely inappropriate, especially in the midst of the summer season.
Mower Wirax and Lisicki, Polish mounted. how to put the cylinder for lifting yourself
Agricultural machinery has long and firmly entered the usual life of a villager. over, it does not matter at all whether he is engaged in agriculture at a professional level or not. One way or another, everyone is faced with the need to acquire such equipment, because the work of a farmer in itself is very difficult, and it is not always possible to cope with it with his own hands.
And if we take into account the large agricultural holdings and farms, then there simply cannot be done without such equipment. Therefore, in recent decades, there has been an extraordinary demand for various sowing, tractor, tillage and other types of equipment.
Various mowers for a tractor have gained considerable popularity, allowing you to process large areas, mowing grass and various crops. Large agricultural companies promptly reacted to this trend, deploying their development vector to the production of similar units and devices.
At the moment, there are three categories of the main manufacturers of rotary mowers for tractors: European companies, domestic manufacturers and Chinese equipment. Each category has its pros and cons, for example, Chinese manufacturers provide their equipment at very competitive prices, significantly different from European ones.
Modern production technologies and advanced technological enterprises located in Europe allow this quality to be fully demonstrated. One of the most famous manufacturers, popular among farmers, is the Polish company Wirax, which produces various agricultural equipment, including rotary mowers for tractors. You can find out about the segment tractor mower, which is an excellent alternative to Wirax mowers, in this article.
Wirax device. 1.85m
Wirax. 1.85m is designed for mowing various crops, grass and much more. In addition, the Polish rotary mower 1.85 is an effective method of combating weeds and weeds that sprout abundantly in the fields.
Due to its design, the mower can handle large areas, which is very beneficial for large agricultural enterprises. Rotary mower Polish, will become an indispensable assistant in rural life.
Characteristics of “Wirax”. 1.85m:
- weight. 380 kg;
- dimensions (l / w / h). 320cm / 105cm / 100cm;
- width of the treated surface. 1.85 m;
- speed. 10 km / h;
- the total number of knives. 6;
- tractor requirements. at least 40 hp;
- number of disks. 2.
Features of the mower in the photo.
So, we examined the technical characteristics of the main models of Polish rotary mowers. The indicators are largely identical, but there are still a couple of differences that affect the final price difference. Which one to purchase is up to you, it all depends on what area you have at your disposal and what specific requirements for the unit are important for you.
Principle of operation
Rotary mowers are based on the principle of mowing grass, by starting the machine on which the mower is installed. The description is very schematic, but the principle of operation of a rotary mower is not very complicated either. But this simplicity is false, because the results it shows are truly amazing in the quality and scale of execution.
This type of technique is very popular with farmers, because it allows you to cultivate many hectares of the area, mowing various grass surfaces. Here I would like to mention a mower for tall grass and uneven areas, which will delight you with a quality lawn mow.
Depending on the configuration, the rotary mower can be mounted, semi-mounted or trailed. Each design option has its own advantages and disadvantages, depending on the purpose for which you are going to use it and what area to process.
The complete set of a rotary mower includes:
- cardan shaft;
- cutting knives;
- multiple disks;
- a frame consisting of metal bars;
- wheel system;
- key for changing knives.
The correct proportion of gasoline and chainsaw oil is a determining factor in the life of the tool.
For those who are confident in their abilities, we suggest following the link //machinspec.com/lesozagotovitelnaya/benzopila/kak-natochit-cep.html and learn how to sharpen a chainsaw chain with your own hands.
The KamAZ 4308 operating manual, which you can find here, can significantly reduce the risk of unit breakdown.
The Polish rotary mower, like similar models from other manufacturers, is designed for a wide range of agricultural activities. Mowing grass for livestock feed, harvesting various crops. all this is part of the scope of rotary mowers. However, as in any other technique, there are also several nuances that you need to pay attention to first of all when purchasing such a mower.
Among the main points and characteristics to which you should pay attention are the following:
- minimum and maximum cutting height of the mowed grass;
- the area that the unit processes;
- rotation frequency of knives;
- the width of the strip of the processed surface, produced by the mower in one pass.
Paying attention to these points, you can buy yourself a reliable unit that will last for many years. However, there are already quite popular models in which all these characteristics are combined in optimal proportions.