CATERPILLAR CHAIN OF VEHICLE Russian patent published in 2020 - IPC B62D55/205 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to caterpillar chain design, particularly, to caterpillar tracks. Vehicle track chain comprises tracks formed by shoes, links with external lugs and inner lugs, serially connected by means of pins, at that, the external lugs comprise end sleeves rigidly connected to them, made in the form of cups, and the inner lugs are made in the form of a one-piece design with bushes for driving wheels of the caterpillar drive, wherein the pins are installed with a radial gap relative to the sleeves and sleeves of the inner lugs and an axial gap relative to the barrel ends. Hinge joint in track chain between tracks consists of bushing part of previous track, coaxial to it two end sleeves, made in form of cups with central hole in ends, rigidly connected with outer lugs of next track, wherein the working length of the hinge joint is equal to the length of the cylindrical working surface of the finger, and the ratio of the length of the contact surface of the finger of the working surface of the bushing part of the track to the working length of the hinged joint is 0.4÷0.75, wherein working diameter of finger is 0.15÷0.3 of pitch of specific caterpillar chain. On the web of the track shoe on the side of the inner lugs there are chamfers. In the central part of the shoe canvas there is a hole, and on external support surface of the shoe there is at least one solid-cast soil hook with a slope of working surface 2° on each side. In the butt-end of the pin there is a spherical recess. Between the end bushing inner end surface in the bellow cavity the removable plug is installed, and in bores of bushing eye there are cone rings out of polyurethane with provision of tight contact. On the external surface of the bushing part of the track there are two flat faces arranged between each other at an angle equal to the angle of the camber of the driving wheel teeth, and their common vertical axis of symmetry is inclined by an angle equal to 0,5 of the central angle of the track laying in the cavities of the driving wheel.

EFFECT: development of such caterpillar chain of vehicle, which increases high repairability with increase in traction power characteristic, operational reliability and durability.

7 cl, 7 dwg