RU51585U1 - HIGH PERFORMANCE VEHICLE CRAWLER CHAIN - Google Patents

Abstract

The solution relates to transport engineering, in particular, to caterpillar movers of multi-purpose snow and swamp machines intended for operation in various conditions, including on soils with low bearing capacity. It is proposed that the links of the caterpillar chain be made of a metal frame placed in an elastic material with rubber-cord layers from bushings passing through the entire link, plates extending from them, forming a comb, and edge plates, a rubber-metal hinge in the form of a rubberized asymmetrical ring passed through the bushings, and the locks are provided with a central hole for attaching the expander bracket. This embodiment increases the environmental friendliness of the track chain, reduces metal consumption and increases the reliability and durability of the track chain.

Description

The solution relates to transport engineering, in particular to caterpillar engines of multi-purpose snow and swamp machines intended for operation in various conditions, including on soils with low bearing capacity.

Known Caterpillar propulsion vehicle (according to the certificate of the Russian Federation No. 18166, CL. 62 D 55/26 of 05/27/2001), containing metal links and attached along the wings of the link by means of connecting elements, extenders made of elastic material reinforced with cord, threaded mounting holes located inside the base of the expanders.

However, this solution has disadvantages:

- metal links - a harmful effect on the soil, in particular on the vegetation cover, contributing to its destruction (loss of environmental propulsion);

- significant caterpillar chain metal consumption.

As a prototype, a caterpillar chain was adopted (according to Pat. RF No. 2152324, class B 62 D 55/21, 1998), containing links with combs and fingers connected by locks using rubber-metal hinges made in the form of bushings for the fingers, each link has four fingers, made in one piece with the link.

The prototype has the same drawbacks as its counterpart: harmful effects on the soil and vegetation of metal links; significant caterpillar chain metal consumption. In addition, the implementation of the rubber-metal hinge in the locks of an insignificant contact surface of the fingers with the protrusions and the link limits the reliability and durability of the track chain.

These shortcomings are eliminated by the proposed solution.

The task at hand is the improvement of the design of the track chain.

The technical result is an increase in environmental friendliness, a decrease in metal consumption, and an increase in the reliability and durability of the track chain.

This technical result is achieved by the fact that in the caterpillar chain of a cross-country vehicle containing links with ridges, rubber joints, locks worn on the protruding ends of the fingers of adjacent links, fasteners: fingers, handles, bolts, washers, links are made from placed in elastic material with rubber-cord layers of a metal frame from bushings passing through the entire link, plates extending from them, forming a comb and also edge plates, rubber-metal hinges in the form of a missed through the bushings of a finger rubberized with asymmetric rings, and the locks are equipped with a central hole for mounting the bracket of the expander.

The track chain is environmentally friendly through the use of an elastic sole of the links that reduce the impact of tracks on the ground; a metal frame of bushings, plates and ridges provide stiffness and strength of the link; the rubber-metal hinge in the form of a finger passed through the bushings with rubber rings vulcanized on it eliminates metal friction on metal due to internal friction in the bush resulting from deformation of a concentric shift in the finger during relative rotation of the tracks, which increases the reliability and durability of the track chain. The asymmetric position of the hinge of the track chain along the track height (in the cross section of FIG. 3) provides the track with increased one-sided rigidity, reducing pressure on the soil under the track rollers of the machine and improving its throughput.

The ability to install extenders, widely known as tracked engines of all-terrain vehicles (see, for example, the aforementioned certificate for utility model No. 18166, 62 D 55/26, 2001) through an arm connected by a lock, allows to ensure the traction and coupling qualities of the tracked vehicle .

The proposed track chain is shown in the drawings:

figure 1 is a front view; figure 2 is a top view; figure 3 is a section aa in figure 1.

The links 1 of the caterpillar chain are a frame structure consisting of edge connecting plates 2, bushings 3, 4 and plates of the central hollow ridge 5, poured into an elastic-cord casing (rubberized, for example, with elastic material with rubber-cord layers 6 except for the working surfaces of the ridge) so that a treadmill 7 for the roller is formed on top of the link, a lug 8. on the bottom. Metal fingers 9 of hexagonal section, rubberized with rings 10 of an asymmetric profile, are pressed into the holes of the bushes 3, 4 of link 1 by developing a parallel rubber-metal hinge, and are held in the bushings of the links due to the preload of rubber, without requiring additional locking from axial movement.

The links of the tracks with the fingers pressed into them are connected to each other by pin locks 11 with hexagonal holes, which are worn on the hexagonal ends of the fingers 9 protruding from the links and are used to connect the links to the chain and mesh with the gear rims of the drive wheels. This connection of the links prevents rotation of the locks 11 relative to the fingers 9 and increases the durability of the structure as a whole.

The extenders 12 (figure 2) are made of an elastic material reinforced with layers of cord. The supporting surface of the expander has a developed lug.

The brackets 13 of the expanders are attached to the locks 11 with bolts 14 with lock washers through a central hole in the lock 11.

The extender 12 is attached to the bracket 13 with the eyes with a finger 15, which enters the holes of the eyes. The groove in the finger 15 ensures the reliability of the mounting of the expander due to preload. This connection does not require additional locking, provides simplicity

fastenings, reliability, operability, and also reduces the material consumption of the structure.

When the vehicle moves along a solid support surface, the track chain can be used without expanders.

The link of the caterpillar chain is made as follows: the welded frame from the bushings 3, 4, plates 2 and 5 is filled with a rubber-cord mixture and baked in a mold in accordance with existing manufacturing technologies. The links thus obtained are collected in a track chain. Fingers 9 are pressed into the eyes formed by bushings 3, 4. Asymmetrical rings undergo significant radial compression, and when the track chain moves, they undergo one-sided compression from the forces transmitted by the track.

When the vehicle is traveling off-road, the elastic links 1 (if necessary with expanders 12) do not damage the surface and grass cover, while having high adhesion to the surface.

When a vehicle moves along a deformable track (soils with low bearing capacity), a track chain with extenders, the supporting surface of which has a developed lug, is used to increase the traction and coupling properties of the vehicle and reduce the average pressure of the propulsion device on the ground.

Claims (1)

The caterpillar chain of a cross-country vehicle, containing links with ridges, rubber-metal hinges, locks, worn on the protruding ends of the fingers of adjacent links, fastening elements: fingers, lugs, washer bolts, characterized in that the links are made of rubber-cord layers placed in an elastic material a metal frame from bushings passing through the entire link, plates extending from them, forming a comb, as well as edge plates, a rubber-metal hinge - in the form of a trimmed finger passed through the bushings ennogo unbalanced rings and locks have a central hole for fastening the bracket expanders.