How to disassemble the gearbox of a rotary mower

9th April 2021

Principle of operation

First of all, it is worth noting that this kind of mechanism is designed for work that is carried out in meadows and fields, namely those related to mowing. over, it can be not only crops that are grown in the agricultural area, but also the device is quite easily and simply able to cope with weeds, which actually also overwhelm our fields.

It is this kind of activity that is the main direction of the functionality of rotary mowers, which are a kind of trailers for the tractor that moves them.

It should be noted that this mower has three types of a kind of connection to transport, namely: mounted, trailed and semi-mounted.

over, this cutting device has the possibility of a kind of separation, which consists in the fact that the tool can be installed both from the side of the mower, in the front part, as well as in the rear area of the device.

As for the very start of the operation of the mower of this kind of direction, then in fact it can be produced both from the transmission of the tractor itself, and by moving the wheels of this vehicle. On a frame made of metal, a support wheel is attached, it is this wheel that has the cutting element.

Actually making its movement, it, let’s say, provokes a cutting system to move, it is thanks to this kind of process that the mowing itself is performed.

over, this kind of mower can have three unique knives. In fact, their number directly depends on the model of the device itself.

It should be noted that such a number of these elements is the most optimal and effective, as the level of productivity of the tool itself increases. And in general, rotary mowers have quite significant indicators of relatively safe and quality.

How to properly assemble a rotary mower on a tiller

Rotary mowers have important advantages:

high efficiency, reaching 70% (this also applies to mowers based on a chainsaw);
when mounted on a self-propelled tiller or mini tractor, the mowing speed is 8-12 km / h;
the cut grass is laid in a swath, and it is convenient to collect it in swaths;
floating knives are less blunt and do not break when in contact with obstacles (uneven soil, stones);
the ability to mount additional knives that chop the grass.

The rotary mower is connected to the tiller in various ways:

semi-mounted. the device is equipped with a support wheel;
hinged. attached to the tiller body;
trailed. the mower is point-to-point connected to the vehicle and has its own wheelbase.

An example of a rotary mower with two discs

It is easiest to assemble a mounted mower with your own hands. Metal corners for the frame, pipes and plates are used. It is important to carry out anti-corrosion treatment. Step-by-step assembly instructions:

Prepare knives that are attached to the discs. Three cutting elements are sufficient per rotor. Be sure to control the strength of the connection while maintaining the mobility of the knives. When hitting an obstacle, they will fold and will not break. A metal rivet is preferred over twisting with bolts and nuts. You can also use knives and discs from a small combine, lawn mower or other equipment.
For the lower support, a small-section metal pipe is used, which is equipped with a bearing. The second bearing is connected to the pulley.
Weld the pipe and pulley so that the bearings remain in working order and set the rotors in motion.
A rigid welded frame is made, for which a metal corner is suitable.
Weld the mower to the frame.
Next, connect the mower to the tiller. It is recommended to mount a shock absorber to avoid hard surface contact.
The junction of the drive belt with the PTO gear is protected by a cover.
Mount the mower on / off lever and the throttle control cable.

Homemade rotary mower

Rotary mower for tractor

How to choose knives for different types of mowers

Homemade mowers are usually equipped with knives collected from available tools. Optimal options:

For a rotary mower, knives made from a wood saw blade are best suited. The teeth are additionally sharpened to facilitate the movement of the device. Hardened metal or stainless steel rails are also suitable. You can give a second life to knives from factory tools, similar to an airplane propeller. They are screwed to the rotor disc through the hole in the center of the “blade”.
It is recommended to use hardened metal for the segment mower. The teeth are turned by hand with a hacksaw for metal or using a lathe. Then they are sharpened. The size of the cutting head depends on the power and the intended use.

Rotary Mower Blade

You can make a simplified knife design yourself.

Segment mower blades with rake tines for better swath placement

Drawings and detailed instructions open up a wide range of possibilities. But sometimes doubts arise. whether the work is being carried out correctly. Therefore, it will not be superfluous to contact specialists with significant experience in the implementation of various engineering solutions. Professionals will share valuable tips and tricks for competently assembling a mowing machine with their own hands, which will become a reliable assistant in work on the site or in the field.

Material for making a mower for a mini tractor

It is easier to buy ready-made parts, but this way you are unlikely to save money. To make a mower with your own hands, you will need scrap metal. As a rule, you can find a lot of it in private yards in villages and towns. On abandoned farms, you can find old rusty frames that are suitable for making a mower base. Old iron batteries and barrels can be used. Even old bike frames can come in handy. Spare parts from the old Volga or Zaporozhets, too, do not rush to throw away. All this in skilled hands, plus the knowledge of the technical part and skillful handling of welding can turn into a mower for a minitrator.

Safety engineering

The main thing a master should worry about when assembling homemade equipment for a mini-talker is not how well it will work, but, first of all, how safe it will be. Before starting to work with a self-assembled mower, check the strength of all connections. Take care of the safety not only of the tractor driver, but also of the animals. When launching within 50 m, no one should be.

When working with homemade mowers, make sure that there are no people in the front. If the mowing grass is tall, such as reeds. Take the time to go and see. Remember safety first.

Assembling a mower for a mini-tractor with your own hands is just simple for a person with the skills of a welder, technician, mathematics. In addition, perseverance and hard work must be present. If you do not have all these qualities, then just take pity on your nerves and buy a ready-made model of a rotary mower.

mini tractors, self-made cars, garage and everything around it! | Topic author: Aydar

OKA engine on homemade products.

Mowers are classified according to the following criteria: according to their purpose, common for mowing grass (KS-F-2.1, KP-F-6.0, KRN-2.1A, etc.), mower-conditioners (KPS-5B, KPRN- 3.0A, etc.), mower-shredders (KIR-1.5M, KPI-2.4A, etc.) for mowing, chopping and loading grass into transport trailers and mowers with batch discharge (KPP-3); according to the number of cutting devices. to single-bar (KS-F-2.1), two-bar (KD-F-4.0), three-bar (KP-F-6.0); by the method of connection with the tractor. mounted (KRN-2.1A), semi-mounted (KD-F-4.0) and trailed (KP-F-6.0); according to the principle of operation of cutting devices. with a cutting device of reciprocating action (knife type), rotary (KIR-1.5M) and rotary (KRN-2DA).

The high-speed mower KS-F-2.1 is designed for mowing natural and sown grasses, as well as for harvesting legumes. It consists of a cutting device, drive mechanisms and control of working bodies, a frame and a device for connecting to a tractor.

The cutting device is used for cutting plants. Its main parts: movable knife and fixed bar 14 (fig.11.1) with fingers fixed on it.

During operation, the toe bar rests on two shoes: the inner four and outdoor 6.

Shear plates are fixed in the fingers 9, on the edges of which there is a notch that prevents the grass from slipping out when cutting. Presser feet are attached to the toe bar for better fit of the segments to the anti-shear plates eleven. They do not allow the knife to rise during operation. There are friction plates under each foot thirteen, limiting the movement of the knife back under the action of the cutting force. Steel skids are attached under the outer and inner shoes, which are used to set the finger bar to a given cutting height. A field board is pivotally attached to the outer shoe with branch bars that move the cut mass to the left, thus providing free passage for the inner shoe on subsequent runs. The divider guides the stems towards the cutter bar.

The knife consists of segments ten, backrests 12 and heads one. The segments are made of high quality steel, their blades (smooth or serrated) are riveted to the back of the knife. A head is also attached to the back, which connects the connecting rod to the knife. The latter is driven by a crank mechanism. Mowers are equipped with normal and low cutting cutters. The most common cutterbar for normal cutting, in which the knife stroke

Where t— the step of the cutting part, the distance between the midpoints of adjacent segments, mm; t0– the step of the counterpart, the distance between the midpoints of adjacent fingers, mm.

Mowers operating at higher speeds (up to 12 km / h) are equipped with a normal cutterbar with double run of segments, which

The knife stroke is doubled for design reasons. The low cut cutterbar is characterized by equality

Brush hog gearbox repair. How to remove and replace the output shaft seal

To drive the knife of the mowers, they also use the mechanisms of a swinging washer (on mowers and headers with front-mounted cutting devices) and a swinging fork (on mowers operating at increased speed).

Cut quality, energy consumption for cutting plants, as well as wear of the mating parts of the working parts of the mower depend on the speed of the knife movement, the sharpness of the blades and other factors.

Average value of the knife movement speed (varies from zero to maximum), m / s,

Where S— knife stroke, m; P. the frequency of rotation of the crank, min “1.

Average blade speed of modern mowers vcp = 1.8. 2m / s.

If the forward speed of the machine is known vm, then the average speed of the knife can be determined from the ratio

where p is the proportionality coefficient: for tractor mowers 3 = 1.25. 1.3.

The timing of harvesting forage and its quality depend on the correct choice of machines for mowing (mowers). The main performance indicators of the mowers are shown in table 11.1.

Three-bar trailed mower KP-F-6.0 and two-bar semi-mounted KD-F-4.0 have mowing units unified with the KS-F-2.1B mower.

Rotary mower KRN-2.1A.

The cutting device of the mower consists of four disc rotors / (Fig. 11.2), on which two lamellar knives are hinged. Rotors rotate in pairs towards each other with a frequency of 2070 min.

’. To limit the pressure of the cutter bar on the soil and transfer the mower to the transport position, a balancing mechanism is used, and a field divider is used to separate the cut mass from the array of plants. A field shield is attached to the bracket of the latter, installed at an angle to the direction of movement of the machine.

Rotors with lamellar knives mow the stems according to the unsupported cut principle.

They move the cut material over the cutterbar and throw it out of the area

/. rotor (disk); 2. plate knife

cutting. The trajectory of movement of the knives of adjacent rotors overlaps, which ensures high-quality work.

The breakage of the cutterbar when it meets an obstacle is prevented by a traction fuse. In case of critical resistance, its spring is compressed, the thrust is lengthened and the mower turns at an angle of 30. 40 °.

Date of publication: 2015-07-22; Read: 876 | Page copyright infringement

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Instructions on how to independently make a rotary mower for a mini tractor: all the nuances

Mechanization of work greatly simplifies the maintenance of a personal or small farm. The limiting factor that encourages the use of manual labor is the high cost of equipment. However, many accessories can be assembled by yourself. Making a DIY mower is a great way to make it easier to provide green forage for livestock or manage weeds. For manufacturing, you will need parts and assemblies available in almost any household.

Why, after assembling mtz 82.1, you turn on the high-low gear reducer and it goes without gears ?

Author: Oleg Vinokurov (admin)
October 25, 2020 9 comments

Question from a subscriber: Hello colleagues. Can you please tell me what could be like that, after assembling the MTZ 82.1, you turn on the reduced gearbox and it goes without turning on the gear? thanks in advance.

How to disassemble the gearbox KRN 2.1, what to look for?

Tell me how to disassemble the KRN 2.1 gearbox, what to look for? thanks in advance!

How to adjust the hitch mtz 82 with crn 2.1?

Author: Yuri Zachinyaev
24 August 2020 4 Comments

.Throw someone off the adjustment of the linkage 82 from krn 2.1. Thanks in advance.

Operating principle and advantages of the rotary mower adapter

Now there is no need to drive in reverse gear with the steering wheel unfolded. Our adapter allows the use of a belt rotary mower by connecting it to the rear PTO, thanks to the swivel mechanism with rollers. At the same time, installing it on the front of the tiller!

A special pulley is installed on the power take-off shaft of the tiller, and the torque is transmitted through a system of rollers. Frames are attached to the tiller body.

The adapter kit includes:

bracket for adapter rollers;
reciprocal corner;
drive pulley on PTO;
swivel roller assembly;
drive belt.

Transition mechanisms

Tiller bevel gearbox (PM3)

Adapter for rotary mower to tiller

Today it is difficult to imagine a farmer who, having a tiller or a motorized tractor on his farm, does not use a rotary mower. Full care of the site without it is simply impossible. On the Ukrainian market, in the segment of mini-agricultural machinery, you can find rotary and segment mowers, but farmers working on small plots use the rotary version. Most rotary mowers are aggregated with water-cooled tillers or motor tractors thanks to a belt drive. But what to do if you have a tiller with an air-cooled engine and do not want to turn the steering wheel and go in reverse gear?

To solve this problem, our enterprise “PE Kryuchkov” has developed a special rotary mechanism. an adapter for installing a rotary mower. Thanks to the constant improvement of the equipment of the Ukrainian manufacturer, PE Kryuchkov (Poltava) is rightfully considered the best in Ukraine.

By purchasing an adapter for a mower of our production, you get the opportunity to fully and independently take care of your site, when and how it is convenient for you.

Mower adapter (PM1)

Rotary mower adapter. great solution for light tiller

Farmers are increasingly using mowers for mowing weeds and harvesting grass for hay. Our connection kit will become an indispensable assistant for owners of air-cooled chillers. It is quite easy to operate, and its price will pleasantly surprise.

Delivery is made to all settlements of Ukraine through the postal services “In Time”, “Deliveri” and “New Mail”. Also use the pickup option.

Equipment

The device itself is not considered massive. The mower is designed in such a way that it can be attached to small tractors with a power of 25 horsepower or more. For this, the design is greatly simplified. Such mowers can be used on fields and meadows with slight slopes and unevenness. Rotary mowers are often used by farmers as a means to control plant weeds.

A rotary or disc mower has cutting elements, which are the main part of this device. The z 169 model is a hinged type class. This means that to use it, it is necessary to hook the device from the rear of the tractor using special fasteners.

The entire main movable element of the model is located on the right side of the hook point. Therefore, when setting the unit to the working position, the grass will be cut to the right hand of the driver. The width of the mowed surface is 1.85 meters.

With an average speed of 10 km / h when mowing grass, productivity is about 2 hectares per hour.

The mower is equipped with 6 special cutters. The rotation of the disks of the mechanism is carried out due to the rotation of the propeller shaft. The knives are located on 2 special discs. The entire structure is supported by a special frame. It is based on reinforced metal beams.

The structure of the mower, as well as its modifications, make it possible to use it not only for shallow mowing, but also for full harvesting. The weight of the device, depending on the configuration, can reach 380 kilograms. During operation, the discs begin to rotate at a speed of up to 550 rpm. This speed will be enough to cut densely growing greens. Blades on rotating discs can be removed and replaced. This was done so that it is necessary to sharpen after several days of active work. At this speed, the blades begin to dull quickly. Mounts located on the underside of the disc securely fix the blades.

The power take-off shaft in the tractor serves as a rotating element for the mower. A cardan shaft of the device is equipped to it, so that rotations are transmitted to the cardan via the PTO. And from it, through the mechanism of gears of various diameters, all the incoming energy was transmitted to the rotating elements equipped with blades.

The support beam, when connected to a vehicle, can be adjusted to different incline levels so that the grass cut level can be adjusted. The support mechanism also has a damping system to cushion the level of incoming vibration from the rapidly rotating tractor shaft.

Publications

It is not always convenient to use large-sized equipment, such as harvesters, to collect various crops. During the period of the harvesting campaign, such technical means are expensive. In addition, many types of vegetation cannot be harvested with the help of combines. It is more convenient for farmers to use small rotary mowers, which are inexpensive to maintain and can quickly mow various types of vegetation.

How To Change The Bearing On A Rotary Mower

How to change a bearing in a washing machine? Bearing change in a top-loading washing machine

Automatic washing machines are now, of course, in virtually every family. Unimaginably facilitating the work of the ladies, they regularly serve them for long and long years. At some point, but certainly they all require intervention and repair.

When a breakdown occurs in an electronic circuit, for the most part, a service department will not do. If the drain did not work, then you can clean the filter without the help of others, and, for you, the drainage lines.

When the bearing hums or, worse than that, jammed, the repair can also be carried out by the male half of the family, which will significantly save the family’s budget and increase the authority in the views of the spouse. Otherwise, it is better not to boil and call the master.

For those who are confident within themselves, we will have a conversation about how to change a bearing in a washing machine.

This type of repair is considered serious. To change the bearing in a washing machine, you need to disassemble the entire power plant. The process is so complex and thorough. The understanding that later all this will need to be collected makes many to hesitate in their own strengths.

If the passage of trouble (during handicraft repairs are often “unnecessary parts” or accompanying fatal breakdowns, after which it is impossible to return the mechanism), the purchase of the newest typewriter will cost more than calling the master.

The main prerequisite for bearing failure is water ingress. It flushes out the grease, and the part ceases to fully fulfill its purpose.

A prerequisite for this is the loss of the elasticity of the oil seals, which is inevitable during long-term operation. Based on the frequency of use, this does not happen for 30 years, than 5-7 years after purchase.

For many, if you change the seals wisely, the bearings will be able to last longer. This is a wrong worldview. Such details are tightly intertwined with each other in works and change immediately. If you change the bearing, leaving the old oil seal, of course, wait for the deformation of the drum sleeve. Nobody repairs the bushings, and in this case you have to change the drum.

Before replacing a bearing in a washing machine, you need to make sure in such a cut that it alone is faulty.

Repair and maintenance of the mower

There are no complicated mechanical elements in a rotary mower. Many farmers like it just because of this, since, with its simplicity in design, it does not require frequent technical repairs.

However, all moving parts eventually wear out and require replacement or maintenance, so owners of such devices need to constantly monitor the technical condition.

Do-it-yourself rotary mower repair is quite simple, the main thing is to have all the tools and spare parts necessary for this. The model is not technically complicated and one person can independently service it.

Repair of the rotary mower gearbox is quite often carried out due to the fact that it is directly connected to all moving elements. The entire load is transmitted to it along the shaft. As a result of the high speed of rotation of the elements, strong friction is formed. To reduce wear, lubricating fluids should be used, however, often during operation, the lubricant level can drop, which causes damage to the internal elements of the gearbox.

DIY repair of a Polish rotary mower

Equipment

At an average speed of 10 km per hour when cutting grass, productivity is about 2 hectares per hour.

The mower is equipped with 6 special cutters. The rotation of the disks of the mechanism is carried out due to the rotation of the propeller shaft. The knives are located on 2 special discs. The entire structure is supported by a special frame. It is based on reinforced metal beams.

DIY repair of a Polish rotary mower

It is not always convenient to use large-sized equipment, such as harvesters, to collect various crops. During the period of the harvesting campaign, such technical means are expensive. In addition, many types of vegetation cannot be harvested with the help of combines. It is more convenient for farmers to use small rotary mowers, which are inexpensive to maintain and can quickly mow various types of vegetation.

What they write on tribun.com.ua about mower repair?

Repair and service

There are no complicated mechanical elements in a rotary mower. Many farmers like it just because of this, since, with its simplicity in design, it does not require frequent technical repairs.

However, all moving parts eventually wear out and require replacement or maintenance, so owners of such devices need to constantly monitor the technical condition.

Do-it-yourself rotary mower repair is quite simple, the main thing is to have all the tools and spare parts necessary for this. The model is not technically complicated and one person can independently service it.

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Sources:

http://zavodru.ru/kak-razobrat-reduktor-krn-2-1-na-chto-obratit-vnimanie-5278
http://kruchkov.com.ua/katalog/perexodnik-k-kosile
http://yasenevo-flowers.ru/remont/remont-polskoj-rotornoj-kosilki-svoimi-rukami.html

Lawn Mowers disassemble, gearbox, mower, rotary

How to disassemble the gearbox of a rotary mower

Principle of operation

How to properly assemble a rotary mower on a tiller

How to choose knives for different types of mowers

Material for making a mower for a mini tractor

Safety engineering

mini tractors, self-made cars, garage and everything around it! | Topic author: Aydar

Brush hog gearbox repair. How to remove and replace the output shaft seal

Instructions on how to independently make a rotary mower for a mini tractor: all the nuances

Why, after assembling mtz 82.1, you turn on the high-low gear reducer and it goes without gears ?

How to disassemble the gearbox KRN 2.1, what to look for?

How to adjust the hitch mtz 82 with crn 2.1?

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