Cart for a motor-block: trailer device with their own hands, wheelbarrow and cart, how to make a homemade trailer 0 drawings and dimensions

An ordinary car is poorly adapted for the transportation of heavy and bulky cargo, so it is often necessary to use a trailer. Buying such a device allows you to solve many problems, but for craftsmen it is much more preferable to assemble the trailer by yourself. The cost of a homemade trailer can be many times less than a factory trailer. Today we will talk about one of the important components of the design of a car trailer. its axle.

The frame is the foundation of the trailer, it is its strength, rigidity that determines the durability of the trailer as a whole. For more reliability it is recommended to use welded connection of elements. Begin by determining the frame dimensions. length and width. The size is determined by the outer edges of the frame elements. To determine the full width of the future frame, add 2 wall thicknesses to the distance between the inner faces of the side walls. If the frame is placed between the wheels and not over them, then it is necessary to take into account also the gaps between the tire and the wall.

After determining the dimensions the framework is tried on. Metal profile is laid out on a flat surface, keeping perpendicularity between the elements. Connect the frame elements with clamps. At this stage, control the shape of the frame, for this measuring tape measure the two diagonals of the resulting rectangle. These values should be identical, at most 2% to 5% deviations are tolerable. It is desirable to provide a stiffening rib in the design, the rectangle or square itself is quite unstable structure under load.

What tasks does the clutch for the power tiller perform

The clutch for a motor-block performs the following functions:

  • transmits torque;
  • dampens the oscillation of the rotation;
  • Shifts gears smoothly;
  • connects the gears;
  • connects and disconnects the motor connection to the gearbox;
  • disengages the transmission from the flywheel.

Depending on the design of the cultivator, there are different types of clutch.

The centrifugal system uses the clutch cable on the motoblock, flywheel, shaft, knob, disc, washer. Under heavy loads, the system slips, so it is not widely used.

The hydraulic clutch of a power tiller transmits motion to the piston when pressure is applied to the pedal through a connecting rod, which directs the working fluid through a channel in a squeeze. The piston acts on the lever through the connecting rod, the handle is returned by the spring.

Automatic clutch for single axle tractor is installed on motor cultivators with high engine power. Single-disc and multi-disc systems provide smooth engagement of the machine and start of its movement.

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Rules for installing and operating equipment on a single axle tractor

To install the hitch, you need to put the bracket of the hitch itself on the hitch of the power tiller. According to the diagram, all this should be attached by pins. It is also worthwhile using the M12 (60) spacer bolts to fix the hitch.

To attach an additional implement to a trailed implement, the axle must be installed on the implement carrier bracket. And the installed axle must be inserted into the hole in the body of this clutch. It should have an M16 thread, so you can drive with no problem with the bolt. After aligning the holes with the bolt and nut, you can start the work.

Choosing a coupling on a single axle tractor, you should take as a basis the most suitable type of part. There are several types:

  • Single/double. used with different hitches depending on what is used and in what quantity
  • reinforced. optimal for heavy implements; its distinctive feature is that it is more massive. it has a greater thickness and length, which allows the additional equipment to go deeper into the ground;
  • adjustable. provides the ability to change the angle of the shaft, so you can adjust the level of attachment and thereby increase the efficiency of work;
  • universal coupling. enables attachment to several models.

If the coupling to the power tiller of the desired design is not available on sale or there are some special requests for it, it is not so difficult to make it yourself, because it is a fairly simple device. Some craftsmen who prefer to make many “accessories” for the tractor unit with their own hands, make a hitch design for the tractor unit trailer “pipe in pipe”, make it from a gimbal, from a cross tube, from other improvised parts left over from various mechanisms. The owners of such devices note that to make such a unit is not particularly difficult, and share their experience and drawings of the coupling for the motoblock.

Principle of clutch operation

The clutch for the power tiller consists of several important elements:

The driving part consists of the end face of the engine flywheel and the pressure plate. The disc rotates with the attached flywheel. At the same time, the disc can also move on an axis in relation to the flywheel. Between these two elements there is a slave disc, in which is located on the driven shaft. There are spring elements in the form of cylinders around the perimeter of the pressure plate. The function of the springs is based on compression of the disc, which they support. The other end of the springs is in contact with the housing. The springs thereby keep the clutch for the power tiller in a continually engaged condition.

The control mechanism is made of push levers, connected to the body of the pressure discs by pull rods with a drawbar and a pedal. By disengaging the clutch, the owner of the power tiller engages the clutch cable, which transmits the force to the release levers. When the springs are compressed, the levers draw the clutch plate away from the pressure plate, and that causes the clutch to disengage.

The bearing reduces friction by preventing the stationary lead from touching the rotary levers. Most power tillers are fitted with three levers that are 120 degrees to one another. A spring returns each clutch lever to its original position. At the same time the draw-bar is moved to the desired distance to disengage the levers. If this distance is not reached, the clutch begins to slip.

Starter for power tillers. hand or electric?

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How it works

The centrifugal clutch has the indisputable advantages of reliability and long life. This design is used in automatic transmissions. This unit consists of a standard set of components:

  • flywheel;
  • pulley;
  • hub, equipped with a stop slot and a key;
  • flange;
  • bushing;
  • casing;
  • bearing;
  • locking ring.

Due to the connection of the differential with the centrifugal clutch, the machine is easier to control, improves maneuverability and smooth cornering. The differential also controls the speed of the wheels and participates in their locking. Some models of power tillers use special interlocks that allow to stop one wheel autonomously from the other.

Modern units can be equipped with mechanisms of different designs. There are several types of these mechanisms:

  • Friction. easy to maintain and able to work for a long time without pauses with high efficiency;
  • centrifugal. has the disadvantage of rapid wear of parts of industrial mechanisms;
  • Belt. not high reliability and performance, quickly fails on powerful power plants;
  • hydraulic. pedal actuates a piston, the rotation of which drives the lubricating fluid; the piston forces are transmitted to the connecting rod and the springs return it to its original position
  • disc. characterized by high reliability of parts and smooth start; there are single-disc and multi-disc mechanisms, working on the same principle.

Extensive functionality

The clutch on a singleaxle tractor is important when driving. It is difficult to move without it, although it is possible. If it fails, it is better to repair it immediately. Failure of the clutch for a power tiller in a manual transmission leads to damage of the entire transmission. The centrifugal clutch has proven better in this respect, since it is used in automatic transmissions. If it fails, the single-axle tractor won’t move at all, so it won’t cause any other damage.

A centrifugal clutch for a lightweight power tiller includes:

  • flywheel;
  • hub with locking groove and key;
  • pulley;
  • flange;
  • bearing;
  • bushing;
  • locking ring;
  • shroud.

Making a clutch on a heavy or light single axle tractor with their own hands requires certain knowledge and experience. If you have them, get started now. For reliable operation of the centrifugal type, you need to reduce the weight of the pads to 110 grams. Initially, each weighs 134 g. Remove the rubber rings from under the pads and put the stiff springs in their place.

Varieties of clutch mechanisms of power tillers

Modern power tillers have different design features. There are different types of clutch, which can be completed with the technique:

  • friction clutch. This type is the most popular with farmers. These mechanisms are easy to maintain, can run for a long time without interruption, and have high efficiency;
  • centrifugal clutch. The centrifugal clutch has not received the recognition it deserves due to the prolonged towing and the rapid wear of the parts;
  • belt clutch on a power tiller. This mechanism is not very reliable, has a low performance, quickly worn out when working with powerful engines;
  • hydraulic clutch. By pressing the pedal, the main piston starts to move. During its rotation, the lubricating fluid is set in motion. Pressure from the piston is transferred to the connecting rod, the springs perform the automatic restoration of the piston to the starting position;
  • disc clutch on motor blocks. All elements of the mechanism are very reliable and allow a smooth start of the machine. There are single-disc and multi-disc equipment with virtually the same operating principle.

A distinction is made between dry clutches, air clutches and those that work in a bath filled with engine oil.

The important role of the differential

Since this mechanism is part of the transmission, it is connected to the clutch. The differential has a difficult purpose. to make smooth turns, as well as improve the maneuverability of heavy power harvesters. The purpose of the clutch for a power tiller and differential is to adjust the rotation of both wheels at different speeds. In addition, power transmission mechanisms can be equipped with wheel locking functions. However, instead of a differential, a special device may be installed that allows you to disengage one wheel when driving.

The clutch on a single-axle tractor is important when driving. Without it, it’s hard to get off the ground, although it’s possible. If it fails, it is better to repair it immediately. Failure of the clutch for a motor-block in a manual transmission leads to damage to the entire transmission. The centrifugal clutch has proven itself better in this respect, since it has found use in automatic transmissions. If it fails, the single axle tractor will not move at all, and thus will not cause other breakdowns.

The centrifugal clutch for a lightweight power tiller includes:

  • handwheel;
  • A hub with a locking groove and keyway;
  • pulley;
  • flange;
  • bearing;
  • bushing;
  • locking ring;
  • hood.

Making a clutch on a heavy or light single axle tractor with your own hands requires some knowledge and experience. If you have them, get started now. For reliable operation of the centrifugal kind, it is necessary to reduce the weight of the pads to 110 grams. Initially, each weighs 134 gr. The rubber rings must be removed from under the pads, and the stiff springs must be installed in their place.

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