Caterpillar mover - a design designed for heavy self-propelled guns, the traction force in which is performed by winding a metal tape. This system allows you to achieve good cross-country ability in any conditions. The increased contact area with the surface provides low pressure on the soil - about 0.120-1.20 kgf / cm², which is much less than the heaviness of the human foot. As a result, the main parts of the caterpillar mover are protected from deep penetration into the soil.
Propulsion device
The design of the system is quite simple and includes:
- An ordinary wheel that performs leading functions.
- A caterpillar made in the form of a metal tape that creates a flat surface for the wheels when moving.
- Rollers for support - a movable part that eliminates the sagging of the caterpillar.
- Tensioning mechanism with sloths.
- compensation device.
The caterpillar mover was designed by Dmitry Andreyevich Zagryazhsky, the staff captain of the Russian army. On March 2, 1837, he applied for a patent for his invention.
Propulsion types
As a tracked propulsion system, it is divided into four subspecies, each of which has its own distinctive characteristics:
- Propeller with rollers installed for support. The drive wheel for this design is integrated into the rear. Sloths use the free type.
- The second option is presented without the use of carrier rollers, but with the same rear wheel as described above. It also performs leading functions.
- The third subspecies is distinguished by the presence of support rollers and the front drive wheel. Sloths give additional and favorably distinguish the system from the previous ones.
- And the fourth type - without the use of support rollers. It also has a front drive wheel.
Minuses
Like all mechanisms, the caterpillar mover has a number of negative aspects. They include:
- Short-lived parts: track, pins, eyelets and other parts require periodic replacement and special attention.
- Tracks breaking under uneven load. These parts have a good margin of safety, but easily fail under certain conditions.
- Weak system of protection against ingress of foreign elements on the inner surface of the caterpillar and rollers.
Despite the impressive dimensions and external reliability, the tracked system needs careful control. Its owner must have special technical skills.
This design is a lightweight version of the system used to create military vehicles and special all-terrain vehicles. The caterpillar platform is made in the form of a removable module and is designed for installation on cars.
A distinctive feature of the removable platform is ease of use and accessibility to the general public. The cost of such a module does not exceed seven hundred thousand, which is much cheaper than a factory tracked SUV.
You can turn your car into a kind of tank in any conditions. It is enough to have the right tool at hand, and you can easily get an all-terrain vehicle from an ordinary car.
Installation of the structure is a fairly simple process. To do this, the car is driven onto the platform under its own power and the wheels are removed. Then it is fixed in special blocks, and the cardan is connected to the rear axle of the module. Among other things, the connection procedure must also be carried out for the handbrake system. The entire assembly takes no more than three hours and can be carried out in an open field.
Caterpillars for a passenger car
The caterpillar mover for cars has become quite popular. The ability to overcome rough terrain on their car under adverse conditions prompted the craftsmen to create a variety of modules with their own specific features.
For example, Wheeltracks has designed tracks that are connected in a regular place, replacing conventional wheels. The model is compatible with any four-wheel drive vehicle and is the most affordable solution for increasing cross-country ability. Easy to operate, it does not require special knowledge and sophisticated tools.
The Chelyabinsk company "Uralplatform" does not lag behind its colleagues and also released a design that, among other things, is compatible with the cost of their "rigid" starts from three hundred and fifty thousand, and the developed speed reaches forty kilometers.
Conclusion
Almost every man dreams of becoming the owner of a powerful all-terrain vehicle, but not everyone can afford to buy it. In this situation, a removable module comes to the rescue, which, having high characteristics, attracts at an affordable cost. It does not require special knowledge and complex tools.
Caterpillar attachment to motoblocks is a worthy replacement for a motorized towing vehicle! It will allow numerous lovers of winter outdoor activities, hunters, fishermen, regardless of the depth of snow, to get to the right place without any problems. A caterpillar attachment can be a means of transporting goods, firewood, hay, or snow itself when cleaning the local area.
Track drive weight: 50 kg
Speed: no more than 20 km/h
Snow cover: up to 50 cm
Ford: no more than 40-50 cm
Volume when sending through shopping mall: 0.225 cubic meters.
Transportation: sled-sled, trailer from a walk-behind tractor, transportation of up to 4 people on a flat rammed road, off-road 1-2 people
The snowmobile attachment is completely ready for use and does not require any modifications either from the walk-behind tractor or from the attachment itself.
To use the attachment as a vehicle, it is recommended to purchase a folding drag sled and a seat, and for the transport of goods, a drag sled in the form of a flat trough.
TRACK DRIVE consists of:
1. Right and left track drive frame with rollers and sprockets.
2. A rubber track is put on the sprockets.
3. The hub of a large sprocket on each frame is inserted into the axles of the gearbox of the drive wheels of the walk-behind tractor and fixed with bolts (native clamps do not fit).
4. The whole structure is connected by a frame. The lower part of the frame is attached to the frame through a rubber bushing. The upper part of the frame is attached to the first hole from the engine with a bolt to the walk-behind tractor bracket.
5. The frame keeps the walk-behind tractor in a horizontal position, so the coulter is not required.
6. When working with a plow or hiller, the frame can be removed.
Usage: the invention relates to mechanical engineering and can be used in the drive of a caterpillar mover of high-speed machines: a tractor, a tank, a tractor. The essence of the invention: the leading sprung roller has a ring gear for engagement with the caterpillar chain. This will ensure reliable engagement of said roller with the caterpillar. As a result of the transfer of traction and braking forces on the lower branch of the caterpillar chain, the wear of the chain joints will decrease and their durability will increase. 4 ill.
The invention relates to mechanical engineering and can be used in the drive of a caterpillar mover of high-speed machines: a tractor, a tank, a tractor. Known drive gear wheel caterpillar, acting on the caterpillar mover on a straight section of the lower branch of the caterpillar chain. Due to this, the mutual angular displacement of the hinges of the caterpillar links during the transition of the caterpillar chain from the upper branch to the lower one and vice versa occurs practically without load. This increases the efficiency and durability of the track link joints. However, the mentioned drive gear is not sprung, which excludes its use in high-speed tracked vehicles, since it will be damaged during movement. Rubber-coated leading sprung rollers of wheeled-tracked vehicles are known, the drive of which is used only when driving with the caterpillar chains removed, i.e., on wheels. When driving on a caterpillar, a well-known drive wheel of various types is used: geared, with four rollers, etc. The disadvantage of such a drive is the possibility of using it to drive caterpillar chains due to the sliding of rubber rollers on a metal flat surface of the tracks of the caterpillar links. Known drive undercarriage of a caterpillar machine, containing driven gears covered by the caterpillar tape, and road wheels, at least one of which is made in the form of a drive gear placed between the driven gears and engaged with the lower branch of the caterpillar tape in its straight section. The disadvantage of this drive is the weak engagement of the drive gear with the caterpillar belt. The purpose of the invention is to increase the durability and efficiency of the hinges of the links of the caterpillar mover by reducing the load in them in the area of active work of the hinges of the links when rounding the idler and drive wheels. The drive of the undercarriage of the caterpillar machine, mainly the tractor, containing the driven gears covered by the caterpillar tape, and the track rollers, at least one of which is made in the form of a drive gear placed between the driven gears and engaged with the lower branch of the caterpillar tape on its straight section, equipped with a balancing gear reducer, spring-loaded relative to the housing and mounted with the possibility of rotation around the axis driven by the transmission, and the specified drive gear has a diameter less than the distance from the lower branch of the track in its straight section to the axis of the supporting rollers, and is mounted rigidly on the output axle of the specified gearbox . Due to this, the mutual angular displacement of the hinges of the caterpillar links during the transition of the caterpillar chain from the upper branch to the lower one and vice versa occurs practically without load. To achieve this goal, the leading sprung support roller is provided with a ring gear, which is in constant engagement with special surfaces of the caterpillar links on the lower straight section of the caterpillar chain. There can be several driving rollers on each side of the machine. In FIG. 1 shows the drive rollers, general view; in fig. 2 section A-A in Fig. 1; in fig. 3 section B-B in Fig 1; in fig. 4 kinematic diagram. The caterpillar chain 1 of the machine 2 has front 3 and rear 4 guide wheels, one or both of which may have a tensioner. The body of the driving track roller 5 is pivotally attached to the body 6 of the machine 2. A spring 7 is attached to the body of the track roller 5, the second end of which abuts against the platform 8 fixedly attached to the body 6 of the machine. The rod 9 is connected to the castellated nut 10, and the cotter pin 11. The second end of the rod 9 is attached to the body of the track roller 5 with the help of pins 12 and the cotter pin 13. The body of the track roller 5 can rotate in the sleeve 14, fixed in the body 6 of the machine 2. Shaft- the gear 15 is in constant engagement with the gear 16, which is connected to the gear 17 of the output shaft 18. The drive gear 20 is attached to the output shaft 18 with bolts 19. The gears 16 and 17 are mounted on the shafts with the help of keys 21. All shafts are mounted on bearings 22. The retaining ring 23 protects the output shaft 18 from axial movement. A track roller 24 is attached to the machine body in a similar way. On the splines of the gear shaft 15, a bevel gear 25 is placed, which is engaged with the gear 26, which is connected through the clutch 27, the shaft 28 and the clutch 29 to the gear 30, which is engaged with the gear 31, fixedly connected to the pinion shaft 15 of the second track roller 24. The proposed drive works as follows. The torque is transmitted from the output shaft of the power transmission through the gear shaft 15 (roller 5), gears 16 and 17, shaft 18, drive gear wheel 20 to the straight section of the lower branch of the caterpillar chain 1. When hitting an obstacle, the drive wheel works as a support roller, and the body of the drive track roller acts as a balancer, the entire final drive body rotates in the sleeve 14, while compressing the spring 7. Due to the transfer of force from the drive wheel to the straight section of the lower branch of the caterpillar chain, the durability and efficiency of the caterpillar chain increase. The presence of a toothed rim makes the engagement of the track roller with the caterpillar link guaranteed. During movement, one drive roller can be detached from the track chain. If there are several leading road wheels on each side, the simultaneous separation of several rollers is impossible. The power transmission of the track roller itself will be small. With a machine engine power of 500 kW and 10 (5 on each side) drive rollers, a power of 50 kW will be realized through each roller.
Claim
DRIVE OF THE CATERPILLAR MOTOR OF A HIGH-SPEED MACHINE, mainly a tractor, containing driven guide wheels covered by a caterpillar tape, and road wheels, at least one of which is made in the form of a drive gear placed between the driven wheels and engaged with the lower branch of the caterpillar tape on its straight section , characterized in that it is equipped with a balancing gear, spring-loaded to the body and mounted with the possibility of rotation around the axle driven by the transmission, and the drive gear wheel is made with a diameter smaller than the distance from the lower branch of the track in its straight section to its upper branch, and is mounted rigidly on the output shaft of the gearbox.
caterpillar mover serves to convert the torque supplied to the drive wheels through the transmission from the power plant into a traction force that drives the vehicle.
The propulsion of tracked vehicles consists of:
- 4 track chains or belts
- driving 3 and guiding 1 wheels
- supporting 5 and supporting 2 rollers
The weight of the vehicle is transmitted through the suspension to the road wheels and tracks, and through them to the supporting surface.
Under the action of the torque M, the drive wheels rewind the caterpillar chains, which spread along the road and are, as it were, a rail track along which the carrier system of the machine moves on the track rollers. As the track rollers roll, the rear track links move to the top run of the track and then come back into contact with the ground under the front of the machine.
Rice. Schemes of caterpillar propellers with stern (a, b) and bow (c, d) location of the drive wheel:
1 - guide wheel; 2 - supporting rollers; 3 -- drive wheel; 4 - caterpillar chain; 5 - track rollers; v is the speed of the machine; M - torque
By design, the caterpillar movers of modern machines can be with bearing or raised guide wheels, front or rear drive wheels, with or without support rollers and various types of caterpillar joints (open metal, rubber-metal joints, joints in the form of needle bearings).
In figures a and b, the drive wheels are located in the rear of the machine. In these schemes, friction losses in the hinges are less than with the nose drive wheels, since the number of track bearings loaded with traction force and inflection points is reduced.
In the diagram in the figure, the guide wheel is a carrier, i.e. it is lowered onto the supporting surface and at the same time acts as a track roller. In this case, the steering wheel is necessarily sprung.
In the diagrams shown in Figure b, d, there are no support rollers, large diameter support rollers, and the propulsion unit itself has a lower height. However, when moving at high speeds, the upper branch of the caterpillar begins to make significant vertical vibrations, accompanied by impacts on the road wheels. The scheme in figure d contains a large number of road wheels arranged in a checkerboard pattern, which improves the machine's cross-country ability.
Caterpillars of transport vehicles can be made in the form of closed rubber-cord or rubber-metal belts. However, due to their fragility and low bearing capacity, these tapes are used on the lightest vehicles, such as snowmobiles. The most widely used metal multi-link caterpillar chains, consisting of links (tracks), pivotally connected to each other.
The tracks are cast or stamped links made of wear-resistant steel, having lugs on the outer surface, guide ridges on the inner surface, as well as holes (pins) into which the teeth of the drive wheels enter, and lugs into which the connecting fingers enter, which articulately connect the tracks between themselves.
Rice. Elements of a metal multi-link caterpillar with an open metal hinge:
1 - lantern; 2 - ears; 3 - guide comb; 4, 5 - tracks; 6 - connecting finger
Guide ridges prevent the tracks from falling off the rollers. If the track rollers are single, then the ridges are made double and are located on both sides of the rollers, and if the rollers are double, then single ridges are used that pass between the rollers.
In caterpillars with open metal hinges, the connecting pin 6 in the form of a long steel rod of circular cross section is inserted into the ears of tracks close to each other and secured with a cotter pin, a retaining ring or riveting. Caterpillars with such hinges are subject to accelerated wear, since dirt and especially sand, which has abrasive properties, easily gets into the hinges. As a result of wear, the length of the track increases and the strength of the pins decreases. Changing the length of the caterpillar requires frequent adjustment of its tension, and with a decrease in the strength of the fingers, they break, leading to a break in the tracks.
The use of rubber-metal joints, in which friction is eliminated, significantly increases the reliability and service life of the tracks. In such hinges, the pin is pressed into a rubber bushing, which, in turn, is pressed into the ears of the track. When the track chain is bent, only the rubber bushings are twisted. There is no sliding friction between the surfaces, so there is no wear on the tracks and pins. However, there are losses in the bending of the caterpillar due to hysteresis phenomena in the rubber. To reduce them, the bushings are pre-twisted in the direction opposite to their twisting during operation.
Rice. Connection of tracks with a rubber-metal hinge:
1 - rubber bushing; 2 - finger; 3 - track eye
Needle bearing joints are lubricated and sealed with oil seals. Currently, such hinges are not widely used.
The drive wheels of the caterpillar mover, designed to rewind the caterpillar chain, are steel crowns attached to the final drive hubs.
According to the type of engagement of the drive wheels with the caterpillar chain, drive wheels with lantern and ridge gears are distinguished.
With pinion gearing (Fig. a), the teeth of the rims enter the holes (pins) of the tracks of the tracks and, when the drive wheels rotate, they rewind the caterpillar.
With ridge engagement (Fig. b), there are recesses on the outer surface of the drive wheel, corresponding in shape and size to the crest of the caterpillar, or special rollers fixed between the smooth rims of the wheel, which, interacting with the crests of the tracks, rewind the caterpillar.
Rice. Lantern (a) and ridge (b) engagement of the drive wheel with the caterpillar
The design of the engagement elements of the driving wheels with the caterpillar must provide shockless transmission of forces, free entry and exit of the caterpillar elements from engagement, good self-cleaning from dirt, snow and large objects that get into engagement.
The guide wheels are located at the opposite end of the machine from the drive wheels and serve to guide the movement of the caterpillar and (together with the tension mechanism) to regulate the tension of the caterpillar. Depending on the design of the tracks, drive wheels and road wheels, the guide wheels can be double or single.
The tension of the tracks is necessary to prevent them from falling off, to reduce losses during rewinding of the tracks and to facilitate their installation and dismantling.
Among the tension mechanisms with a mechanical drive, there are:
- screw - with translational movement of the axis of the guide wheel (Fig. a)
- crank - with the movement of the axis of the guide wheel along the arc of a circle. The crank can be rotated using a worm pair (fig. b) or a screw tie (fig. c)
Rice. Screw (a) and crank (b, c) track tensioning mechanisms:
1 - guide wheel; 2 - machine body; 3 - screw mechanism; 4 - fixing combs; 5, 6 - worm pairs; 7 - crank; 8 - screw
coupler
In the tension mechanism shown in figure a, when the screw rotates, the mechanism body with the guide wheel attached to it moves along the machine body and changes the track tension. In the diagram in figure b, the guide wheel is set to the position corresponding to the specified track tension with the help of a worm pair 5. This position is fixed using combs on the crank and the machine body. The input and output of the crank comb from engagement with the housing are carried out in one mechanism using a worm pair 6 and a screw mechanism. In the diagram in figure c, setting the guide wheel to the desired position is achieved by changing the length of the turnbuckle. In some of these designs, a hydraulic cylinder is installed instead of a turnbuckle.
The track rollers transfer the weight of the machine to the track chains and the bearing part of the machine moves along them. The number of road wheels is five to seven on board.
Rice. Types of track rollers:
a - with internal depreciation; b - all-metal; c - elastic
Track rollers of modern tracked vehicles can be divided into three types: with an external rubber tire, with internal shock absorption (Fig. a) and rigid all-metal (Fig. b). The skating rink of each of the three types can be single, double (see Fig. i, b) and, with very large loads on the rinks, triple.
In some caterpillar propellers, the track rollers are made with pneumatic tires or tires with an elastic filler (fig. c).
Depending on the diameter, the track rollers are of small (500 ... 600 mm) and large (700 ... 800 mm; and more) diameters. Small-diameter track rollers include carrier rollers.
Rigid track rollers are used on low-speed tracked vehicles. Rollers with external rubber tires reduce dynamic loads on the track and roller, as well as reduce machine noise. However, due to the high internal friction in the rubber, a large amount of heat is released during its deformation, which leads to delamination of the tire or its peeling from the rim of the rink. If the roller loads and travel speeds are too high, rollers with internal damping are used. The rubber in these rollers works mainly in shear, and the working surface is much larger than in the outer tires.
Rice. Support roller:
1 - hub; 2 - bearings; 3 - cover; 4 - bushing; 5 - locking pin; 6 - cork; 7 - fungus; 8 - bolt; 9 - gasket; 10, 14 - nuts; 11 - labyrinth cover; 12 - ring; 13, 18 - washers; 15 - cotter pin; 16 - bracket; 17 - axis; 19 - cuffs; 20 - tire
The support rollers serve to support the upper free branch of the caterpillar chain. The operating conditions of such rollers are much easier than those of track rollers, since they are loaded with only a part of the weight of the tracks. The figure shows the design of the support roller along with the bracket for attaching it to the machine body.
To clean the tracks of the caterpillars from snow, snow plows are installed in the caterpillar mover.
While driving on virgin snow, under certain meteorological conditions, snow freezes on the treadmills of the tracks, which causes their excessive tightness - the so-called expansion of the tracks occurs, as a result of which the dynamic characteristics of the machine are sharply reduced. The thrust can cause the caterpillar to fall off, the destruction of the rubber studding of the road wheels.
The chipping of ice from the treadmill of the upper branch of the caterpillar is carried out when the machine is moving with a special asterisk, which is pressed against the treadmill with the help of a spring. To improve ice breaking, the sprocket teeth are of variable width. In the absence of ice on the caterpillar, the sprockets are transferred to the non-working position.
Self-cleaning of the guide wheel from dirt and snow is carried out by a special device in the form of a curved blade installed between the wheel rims and fixed on the machine body.
Motoblocks were once created to facilitate various kinds of work on small farms and summer cottages. Over the years, this technique, like any other, of course, improved. Motoblocks became more and more convenient in work, reliable and functional. One of the advantages of modern models of this technique is its versatility. For example, even wheels on walk-behind tractors can now be changed to tracks.
Why modification is needed
The advantage of such an addition as a caterpillar attachment to a walk-behind tractor is, of course, that it increases the cross-country ability of the latter. The road grip of such a drive is much stronger than conventional wheels. Most often, caterpillars are installed on a walk-behind tractor when the load needs to be transferred, for example, on severe impassability. This accessory will be very useful on the field with very "heavy" soil, as well as in many other cases.
Conventional wheeled walk-behind tractors are mainly used only in summer. Caterpillars are convenient to operate, including in winter. They have pretty good snow traction. Motoblocks with caterpillars in the winter season are very often used, for example, by hunters and fishermen.
What models are on the market
Manufacturers today produce mainly two types of track attachments for walk-behind tractors: universal and designed for some specific models of equipment. When choosing this accessory, you should, among other things, pay attention to the models with which diameter and type of output shafts it can be installed.
Many companies produce similar products today. But the drives of the SAM brand are the most popular among farmers in Russia. This company supplies several series of set-top boxes SP MB to the market. Each of these lines is designed for walk-behind tractors of a certain brand.
In addition to the usual ones, there are also drives with a triangular bypass on the market today. For example, many domestic farmers and summer residents buy caterpillar attachments for GP-N1 walk-behind tractors. The advantage of such models is primarily that they can increase the longitudinal stability of plowmen. That is, with high traction forces, walk-behind tractors with such attachments reduce the risk of lifting the front.
So which plugin should you choose?
Thus, when buying such an accessory, you should pay attention to the following points:
What specific motoblocks is suitable for the drive. This can be found, for example, from the technical passport of the set-top box.
To the manufacturer's brand.
Looks like an outline.
Of course, sometimes one of the determining factors when choosing a crawler attachment to a walk-behind tractor can be the price of this product. The cost of drives of this type in the modern market can range from 25-35 thousand rubles.
What else should you pay attention to
Of course, when choosing a caterpillar attachment to a walk-behind tractor, you should also look at the conditions under which it can be operated. Such information must, of course, be provided by the manufacturer and the seller to the buyer. When choosing a track attachment, you should first of all pay attention to its technical characteristics:
- The maximum height of the snow cover. This indicator is actually very important. Of course, the walk-behind tractor will not be able to pass through too deep snow even with the best prefix. But, of course, it is better if this indicator is as high as possible. For example, many modern attachments make it possible to move through snow up to 50 cm deep.
- The maximum height of water and mud. This indicator, of course, should also be large enough. For some modern models, it is limited only by the height of the engine installation. But usually this indicator for consoles is 45-50 cm.
- Load capacity. This characteristic is selected, of course, first of all, depending on the purpose for which the walk-behind tractor is used in the household. But in any case, two hundred kilograms for a small farm is usually enough.
- The working speed of the walk-behind tractor on tracks. For modern good consoles, this figure is usually 18-20 km / h. That is, you can move around on motoblocks supplemented by them quite quickly.
Ease of assembly is also an important indicator of the quality of any such set-top box. The farmer, of course, should be able to install the tracks on the walk-behind tractor on his own. And the less time spent on this procedure, the better, of course.
Prefixes brand "CAM": advantages and disadvantages
This domestic manufacturer supplies caterpillar drives to the market for almost all Russian and Belarusian walk-behind tractors available on the market today. The most popular in our country are the prefixes "CAM":
SP MB-1 for motoblocks "Oka" and its analogues ("Luch", "Cascade", "Forza");
SP MB-2, 23 and 3 for Neva models of different series;
SP MB-S for motoblocks "Salyut", "Agat".
There are also drives of other SP MB lines designed for other brands of walk-behind tractors. Also on the market there are prefixes SP MB-SA, which are a set of self-adaptation.
All caterpillar drives "CAM" SP MB supplied to specialized stores deserve very good reviews from farmers and summer residents. Consumers attribute their undoubted advantages to a high degree of reliability, ease of use and long service life. The only drawback of these attachments, however, like any other on the modern market, farmers consider their rather high cost.
SP MB-23: caterpillar attachment to the Neva-2 walk-behind tractor
This model has the following specifications:
load capacity - 200 kg;
turning radius - 2 m;
weight - 37 kg;
working speed - 15-18 km / h.
In the event that this attachment will be used for transporting goods in winter, the manufacturer offers to purchase special sled drags in addition to it.
Model SP MB-S
It is also a very popular drive. For example, this caterpillar attachment is suitable for Salyut walk-behind tractors, which are owned by many summer residents and farmers in Russia. The technical characteristics of all SP MB models, including the C series drive, are the same. That is, on a walk-behind tractor with such an attachment, you can drive at a speed of about 18 km / h and transfer loads up to 200 kg.
Among the advantages of the SP MB-S drive, farmers and summer residents include, among other things, ease of control, no need for any refinement of the walk-behind tractor during installation, the presence of three pairs of rollers, etc.
Caterpillar attachment to the walk-behind tractor universal with a triangular bypass GP-N1
These drives are distinguished primarily by the fact that they are excellent for installation on walk-behind tractors of any brand. In any case, they can be mounted on the popular Neva, Oka and Salyut models without any restrictions. The technical characteristics of actuators with a triangular bypass GP-N1 are as follows:
operating speed of movement - up to 20 km / h;
height of snow cover and mud - 50 cm;
weight - 50 kg.
A durable drive sprocket is also what the caterpillar attachment to walk-behind tractors has earned good reviews from summer residents. This structural element of the GP-N1 drive is made of durable textolite. Like the SP MB, the GP-N1 prefixes do not require absolutely any modification for installation on a walk-behind tractor. With their help, any model of this farm equipment can be modified in just a few minutes. Traction force such drives give a very large. But they are, unfortunately, quite expensive - 32-35 thousand rubles.
Is it possible to make a caterpillar drive yourself
Attachments of this type make walk-behind tractors much more convenient to use. However, such drives, as you can see, are quite expensive. Therefore, many farmers and summer residents simply assemble caterpillar attachments to walk-behind tractors with their own hands. The design of this equipment is quite simple. And if necessary, you can make it using even just scrap materials. For example, quite often farmers make such attachments using automobile tires with a very high tread. In this case, the treadmill is simply cut off from the tire and pulled onto the wheels of the walk-behind tractor.
