RU25308U1 - Caterpillar TENSIONER - Google Patents

Abstract

A device for maintaining track tension, comprising a swing arm, a shaped fork, a tension screw with a nut and a spring that passes through a ball bearing, characterized in that the shaped fork is pivotally connected to a swing arm mounted on the frame, and a tension sprocket is mounted on the upper arm of the lever or movie.

Description

Track tensioner

The utility model relates to the chassis and can be used in tractors and other tracked vehicles.

Known tractor tensioner consisting of a spring, which rests on a washer, bolted to the front plane of the bracket axis of the truck. The front end of the spring abuts the guide washer, which transfers pressure through two crackers to the guide washer. Rusks rest on the bevels of the guide tube, which, with its rear end, rests on the bracket of the axle of the cart. The guide washer is inserted into the bracket, fastened with three bolts on the frame of the caterpillar cart. (F.S. Bespyaty. Theory, construction and design of tractors. Mashgiz. M. 1961. p. 162).

The disadvantage of this device is that when hitting an obstacle, the caterpillar may fall off the steering wheel.

Known tensioner track in tractors T-130, DT - 75, T 38 M.

The device comprises a swing arm, a shaped fork, a tension screw with a nut, and a spring. The tension screw passes through the through hole of the spherical support and is fixed with a nut. The opposite end of the tensioning screw having a square head is freely inserted into the shaped fork. The fork is pivotally connected to the lever (F.S. Bespyaty. Theory, design and calculation of tractors. Mashgiz. M.1961.P.163) - prototype.

The disadvantage of such devices is that when the track wheel moves over an obstacle (stone, stump, tree) and compression due to this contact spring, the track tension weakens and

at 62 D 55/30

it can fall off the steering wheel, especially this phenomenon is possible during the rotation of the tractor.

The technical task of the utility model is to achieve the ability to maintain track tension when the steering wheel hits an obstacle.

The task is achieved in that in a device containing a swinging lever, a shaped fork, a tension screw with a nut and a spring that passes through the ball bearing, the shaped fork is pivotally connected to the swinging lever mounted on the frame, a tensioning sprocket or roller is installed on the upper arm of the lever.

The figure schematically shows the track tensioner.

The device comprises a steering wheel 1, a lever 2, a fork 3, a swinging lever 5 is fixed on a support 4, an asterisk or roller 6 is fixed at its upper end, which supports the track 12. A fork 3 has a tension bolt 9 with a spring 7 and a nut 8, which passes through the ball bearing 11 and is fixed with a nut 10.

The device operates as follows.

When the steering wheel 1 collides with an obstacle, it, together with the fork 3, moves back and the fork turns the two-arm lever 5 on the support 4 counterclockwise. The roller or sprocket 6 lifts the caterpillar 12 thus supporting its tension.

Claims (1)

A device for maintaining track tension, comprising a swing arm, a shaped fork, a tension screw with a nut and a spring that passes through a ball bearing, characterized in that the shaped fork is pivotally connected to a swing arm mounted on the frame, and a tension sprocket is mounted on the upper arm of the lever or movie.