SU1751037A1 - Track - Google Patents

Abstract

Usage: the invention relates to a mobile agricultural machinery, mainly tractor, and is intended for use in tracked tractor engines. SUMMARY OF THE INVENTION: Track elements are connected by elastic elements in the form of torsion springs. Rotation of the links relative to each other occurs due to the deformation of these elements, which eliminates friction losses in the joints of the track chains. Limiting the mobility of links with elastic elements contributes to the improvement of the interaction of the crawler with the soil. 1 з.п f-ly, 4 silt,

Description

The invention relates to a mobile agricultural technique, mainly tractor, and is intended for use in tracked tractor engines.

Tracked tractors are known that are equipped with track chains consisting of individual links hinged together by fingers and bushings.

Closest to the present invention is a track chain, each link of which with a high arrangement of hinges consists of separate forged parts: a shoe and two links (rails) attached to it by bolts. The link of the track is pivotally connected by means of steel bushings and pins. In addition, elastic elements in the form of plate springs are used to connect the links of the track.

However, swiveling the links of a known track chain leads to large frictional losses in the hinges of the chain and wear on the sleeves and pins. Soil pressure is transmitted

Mostly through the links of the support section of the caterpillar bypass located under the support rollers, which contributes to an increase in contact pressures, as well as deformations and soil compaction. When the support rollers move, the links of the support section rotate in the soil, additionally deform and spray it.

The aim of the invention is to increase reliability.

This is achieved by using for connecting links of elastic elements in the form of torsion springs. The ends of the springs form loops and are attached to the brackets of adjacent links. The turns of the links relative to each other occur due to the elastic deformations of the torsion springs, which also take up the tensile forces acting in the track contour. In order to stiffen the bond when perceiving tensile forces, deformation limiters in the form of sleeves with shoulders placed inside the torsion springs are used. Replacing the friction in the track chain joints by deformations of elastic elements makes it possible to reduce

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internal losses in tracked engines. The linking of the links by means of torsion springs limits their mobility in the support section, which leads to a more uniform distribution of pressure on the soil and a decrease in the maximum contact pressure.

Figure 1 shows a tracked propulsion unit, the links of which are connected by elastic elements in the form of torsion springs; figure 2 is an elastic element with a limiter; on fig.Z - elastic element; figure 4 - limiter.

The invention is as follows.

Each track link is manufactured from forged parts; links 1 and shoe 2 (fig. 1) attached to the links with bolts. The upper plane of the links 1 forms a treadmill for track rollers. The bushings are pressed into the holes of the inner cheeks of one link and serve as a pinhole with which the sprocket teeth engage. Thus, a serial track chain is applied, with fingers removed, and brackets 3 with grooves are attached to links 1. The links are connected by elastic Elements 4 in the form of torsion springs, the ends of which form loops, are installed in recesses of brackets and are riveted or attached. bolted. The recesses are made according to the shape of the ends of the elastic elements in order to ensure rigidity of their attachment to the brackets. Inside the elastic element is placed the cutter 5 in the form of a sleeve with shoulder limiting the deformation of the torsion springs when it perceives tensile forces. To balance the axial forces that occur when the springs are deformed, the turns of the right and left springs have opposite directions.

When the tracked vehicle moves, the link 1 rotates relative to each other in connection with the transition to the leading

or steering wheel. These rotations occur due to the deformations of the elastic elements 4, They are set so that the stops 5 do not prevent such deformations. When significant tensile forces occur in the contour of the caterpillar, the elastic elements 4 are deformed all the way into the stops 5.

Thus, the rotation of the links 1 friend

relative to a friend occurs by de. formations of elastic elements 4, which eliminates friction losses in the contour of the caterpillar, and the limiters 5 ensure the maintenance within certain limits

the distance between links 1 (pitch stability), which is necessary for normal engagement with the drive wheel.

In addition, the limiters prevent the tape from bending backwards, which limits

rotation of links 1 under the influence of road wheels on soft ground. This contributes to a more uniform distribution of contact pressure.

Claims (2)

1. Caterpillar tape, containing windless links with base tracks, interconnected by elastic elements, the ends of which are placed in recesses made from both ends links in the shape of the ends of the elastic elements, characterized in that, in order to increase reliability by limiting the deformation of the elastic elements, it is provided with sleeves with shoulders, and the elastic elements are made in the form of torsion springs covering the space on the sleeves between the shoulders, and the spring ends are bent in the form of closed loops arranged in a plane perpendicular to the plane of the arrangement of the turns of the springs. 2. Track under item 1, about tl and h a tout and the fact that with opposite ends of the links are placed springs with different direction of winding. / / / /   N-7-GL - YY v, h, v ./L . ". R f 4 1 w ./ / at -yr - g U k -l / l / x 327 FIG. 2 Fi.Z X &