SU943068A1 - Vehicle endless-track - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to a transport engineering, in particular to tracked vehicles.

A tracked vehicle chain is known, comprising links with eyelets, in which fingers are fitted with rubber rings and limiters for the radial movement of the fingers in eyelets D.

When pressed in such a track chain, the rubber rings may be destroyed, the seal is broken, resulting in wear and durability.

Also known is a vehicle track chain, comprising links with eyelets, inside which are mounted fingers, sealing rings and limiters for the radial movement of fingers in the form of inserts, located in eyelets from the working sections of the fingers and placed in the notches surrounding fingers of sleeve bushings 2.

In this design, it is possible that the individual sleeve bushings will be misoriented, which will lead to wear of the fingers and decrease in durability.

The purpose of the invention is to increase the durability of the track chain.

This goal is achieved by the fact that the bushing clips are made in the form of a single pipe, which unites all the lugs Q of the two adjacent links and is installed freely in them, the sealing rings are placed between the outer surface of the pipe and the inner surface of the lugs, and the inserts are set into 5 slots with a gap.

FIG. 1 shows track chain lugs, longitudinal section; in fig. 2 - the same cross section.

Claims (2)

The track chain contains links of the 1st line with lugs 2, connected by pipes 3, inside of which fingers t are located. In pipes 3, holes 5 are made with edges 6, in which inserts 7 are placed, which are in contact with participants by working surfaces of fingers and internal surfaces of 8 eyelets 2. There are gaps between inserts 7 and edges 6 of pipes 3. On each side of each liner 7 on the outer surface of the pipes 3, sealing rings 9 are attached, pressed into the lugs. The free ends of the pipes 3 are closed with plugs 10. The trough force from one link to another is transmitted through the liners 7 and the finger A. With the mutual angular rotation of the links, the liners 7 do not interact with the pipe 3 because of the gap between them, therefore the finger and the liners 7 are floating and wear them more evenly. The rings 9 and the plugs 10 prevent the ingress of dirt to the sliding surfaces, while the sealing rings 9 also keep the pipe 3 in the oriented position of the chain. In the future, inside the pipe 3 install the finger 4, which due to the presence of chamfer moves the liner 7 in the radial direction until it stops in the inner surface 8 of the lugs 2, after which the plugs 1 are pressed. Due to the fact that between the liners 7 and the edges 6 of the pipe 3 there is a gap, the liners 7 can move radially in the direction of the axis of the hinge and do not interfere with the assembly and disassembly of the track. Since the tubular retainer 3 is disposed with a gap in relation to the finger and the lugs, the requirement for the accuracy of the lugs and the finger can be reduced. Inaccuracy in the manufacture of parts is compensated for by the elastic deformation of the sealing rings 9 and a certain mutual displacement of the parts within the gaps. In this case, it becomes possible to use the casting of links without machining the lugs, and in the manufacture of parts for hinged joints, to use simple operations - to cut the rolled section of the corresponding profile. These advantages significantly reduce the complexity of manufacturing the track chains. In the process of disassembling the track chain, the plugs 10 are first taken out, the finger k is knocked out and then the pipe 3 is pressed out. At the same time, due to the fact that the inserts 7 have the ability to move in the radial direction towards the hinge axis, they do not abut against the ends of the disconnected splines when pressing out pipe, which makes it easier and easier to disassemble the track chain. Due to this design, its durability and reliability of work are increased. Claims of a vehicle track chain comprising links with lugs, inside which are installed fingers, sealing rings and limiters for the radial movement of the fingers in the form of inserts located in the lugs from the working sections of the fingers and placed in the notches surrounding the fingers of the bushings of clamps, that, in order to increase durability, the bushing locks are made in the form of a single pipe that unites all the lugs of two adjacent links and is installed in them freely, sealing itelnye rings placed between the outer surface of the pipe and the inner surface of the lugs, and Liners installed in slots with a clearance. Sources of information taken into account during the examination 1. USSR author's certificate tf 150021, cl. B 62 O 55/20, 09.10.61. 2. USSR author's certificate number 58213, cl. B 62 O 55/20, 30.11.77 (prototype).