RU2510349C1 - Running gear with reinforced-rubber friction-engagement caterpillar track - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Proposed running gear comprises drive and gear wheels with cylindrical treads and reinforced-rubber caterpillar track running there over, reinforcing elements being made integral with guides spaced apart over the length. Steel cable embraces reinforcing elements from outside, said elements vulcanised in rubber to make endless track with treads and support surface with grousers. Track reinforcing element is made of strip-like resilient material of spring steel with ends bent in one side while mid part being bent towards said bend ends. Cylindrical tread of drive wheel features larger width than said cylindrical tread by double clearance between inner side of aforesaid guide and cylindrical tread lateral surface.

EFFECT: increased engagement between track and drive wheel cylindrical tread, decreased tension of said track.

2 cl, 6 dwg

Description

The invention relates to transport engineering, and in particular to running systems with a rubber-reinforced caterpillar of friction meshing, mainly for agricultural tractors and harvesting machines.

A known running system with a rubber-reinforced caterpillar of friction gearing, used by the company Class (Germany) on the Commandor 116 CS combine (see Power Farming. January, 1988, p. 7), which consists of a drive, guide wheels and track rollers between them, covered a rubber-reinforced caterpillar driven by friction forces.

The main drawback of such a running system is that under difficult operating conditions, the drive wheel is slipping with respect to the rubber-reinforced track due to insufficient traction between them, which requires a significant effort to tension the tracks.

Also known is the running system with a rubber-reinforced caterpillar of friction engagement, manufactured and used by Arko - Challenger on Challenger tractors (., Prospects for the development of tractor construction. Candidate of Engineering, prof. N. N. Scheltsin. NATI, p. 420, fig. 7).

One of the drawbacks of the running gear system with a rubber-reinforced caterpillar of the friction engagement of the Challenger tractors is the significant, up to 22 tons, tension forces of the caterpillars and the need to strictly control them in order to maintain the required force transmitted from the drive wheel to the rubber-reinforced caterpillar.

The purpose of the invention is to increase the adhesion of the rubber-reinforced track with the rim of the drive wheel of the running system with the rubber-reinforced caterpillar of the friction mesh while reducing the tension force of the track.

This goal is achieved by the fact that the reinforcing element of the rubber-reinforced caterpillar is made of elastic material in the form of a strip of spring steel with ends bent to one side, the middle part of which is bent towards the bent ends by the Nycomed conchoid, obtained by increasing the radius vector of each point of this curve by the same segment:

$$r=\frac{b}{\cos \varphi \circ }\pm a$$

where r is the radius vector;

φ ° is the angle of rotation of the radius vector;

“A” and “b” are given segments of constant length, with “b”> “a”.

The width of the cylindrical rim of the drive wheel is greater than the width of the cylindrical rim of the guide wheel by a double gap between the inner side of the guide and the side of the cylindrical rim of the guide wheel with optimal tension of the rubber-reinforced track.

Thus, the inventive running system with a rubber-reinforced caterpillar of friction gear meets the criterion of "Novelty."

Signs that distinguish the claimed technical solution from the prototype in other technical solutions of this technical field are not identified, which allows us to conclude that the running system with a rubber-reinforced caterpillar of friction mesh meets the criterion of "significant differences".

Figure 1 shows the proposed suspension system with a rubber-reinforced caterpillar of friction engagement, left view; figure 2 - reinforcing element, General view in a perspective view; figure 3 is a section aa of figure 1, figure 4 is a section bb of figure 1; figure 5 is a section CC of figure 1; Fig.6 is a General view in section of a rubber-reinforced caterpillar from the side of the treadmills in a perspective view.

The running system with a rubber-reinforced caterpillar of friction engagement (Fig. 1) contains a drive 1 and a guide 2 wheels with rims 3 and 4 of cylindrical shape and a rubber-reinforced caterpillar 5 covering them, containing reinforcing elements 6 (Fig. 2), made in one with guides 7 ( figure 3, figure 4), placed at a certain distance from each other in length, steel cord in the form of a cable 8 (figure 3, figure 4, figure 5, figure 6), covering the reinforcing elements 6 from the outside, vulcanized for one in rubber 9 into a single tape having treadmills 10 (figure 3, figure 4, 5) with lugs 12.

The reinforcing element 6 of the rubber-reinforced track 5 is made of elastic material in the form of a strip of spring steel with ends 13 bent to one side, the middle part 14 (figure 2) of which is bent towards the bent ends 13 along the Nycomed conchoid obtained by increasing the radius vector of each points of this curve on the same segment:

$$r=\frac{b}{\cos \varphi \circ }\pm a$$

where r is the radius vector;

φ ° is the angle of rotation of the radius vector; “A” and “b” are given segments of constant length, with “b”> “a”.

The width "D" (Fig. 3) of the cylindrical rim 3 of the driving wheel 1 is larger than the width "E" (Fig. 5) of the cylindrical rim 4 of the wheel guide 2 by a double clearance "S" between the inner side of the guide 7 and the side of the cylindrical the rim 4 of the guide 2 of the wheel with the optimal tension of the rubber-reinforced track 5 (figure 1).

When moving a vehicle equipped with a running system with a rubber-reinforced caterpillar of friction gear, for example, an agricultural tractor or a harvesting machine, the rubber-reinforced caterpillar 5 (Fig. 5) goes around the cylindrical rim 4 of the guide 2 wheels, as well as the cylindrical rim 3 of the driving 1 wheel, which leads to the movement of the rubber-reinforced caterpillar 5 (Fig. 3) due to the friction forces of the surface of the treadmills 10 with a cylindrical rim 3 (Fig. 4, Fig. 6), as well as ends 13 bent to one side with guides 7, which They are pressed against the lateral surface of the cylindrical rim 3 of the driving wheel 1 (Fig. 3) due to the fact that the middle part 14 of the reinforcing element 6 (Fig. 2) is bent towards the bent ends 13 along the Nycomed conchoid obtained by increasing the radius vector of each point given curve for the same segment:

$$r=\frac{b}{\cos \varphi \circ }\pm a$$

where r is the radius of the vector;

φ ° is the angle of rotation of the radius vector;

“A” and “b” are given segments of constant length, while “b”> “a”, under the action of the tensile forces of the endless rubber-reinforced track 5 and the mass of the vehicle, together with the rubber 9 and the treadmills 10, the reinforcing elements 6 will be straightened and received the cross-sectional shape of the outer surface of the cylindrical rim 3 of the driving wheel 1, "forcing" the bent ends 13 with guides 7 to press against the side surface of the cylindrical rim 3 of the driving wheel 1.

After the termination of the interaction of the cylindrical rim 3 of the driving wheel 1 with the rubber-reinforced caterpillar 5, the reinforcing element 6 together with the rubber 9 and the treadmills 10 take their initial position (Fig. 4), and the bent ends 13 extend from the side surface of the cylindrical rim 3 of the driving wheel 1.

Due to the fact that the width "D" of the cylindrical rim 3 of the drive wheel 1 (figure 3) is made larger? than the width “E” of the cylindrical rim 4 of the wheel guide 2 by a double clearance “S” between the inner side of the guide 7 and the side of the cylindrical rim 4 of the wheel 2 with optimal tension of the rubber-reinforced track 5, the reinforcing element 6 together with the rubber 9 and treadmills 10 will also straighten and take the form of a cross section of the outer surface of the cylindrical rim 4 of the wheel guide 2, however, the bent ends 13 with the guides 7 will not be pressed against the side surface of the qi indricheskogo rim 4 of the guide 2 wheels.

The rubber-reinforced caterpillar 5 rests on the soil through the supporting surface 11 and the lugs 12 (Fig. 3, Fig. 4, Fig. 5).

The drive 1 and the guide 2 of the wheel are rolled along the treadmills 10 (Fig. 4, Fig. 6), pressing the rubber-reinforced caterpillar 5 to the soil, ensuring the movement of the vehicle, for example, an agricultural tractor or a harvesting machine.

The presence of a metal cord in the form of a cable 8, as well as reinforcing elements 6, the middle part of which is made according to the Nycomed conchoid, provide additional adhesion to the cylindrical rim 3 of the drive wheel 1 with a rubber-reinforced caterpillar 5 while maintaining its strength, and between the guide 2 and driving 1 wheels in a conchoidal space is formed under the rubber-reinforced caterpillar 5, creating a hydrostatic shutter that reduces the rate of extrusion of soil to the edges of the caterpillar.

The use in the running systems of the proposed rubber-reinforced tracks with friction engagement will increase the adhesion of the rubber-reinforced tracks to the rim of the drive wheel of the running vehicle system and reduce the tension force of the rubber-reinforced tracks.

Claims (2)

1. A running system with a rubber-reinforced caterpillar of friction engagement, comprising a drive and guide wheels with cylindrical rims and covering their rubber-reinforced caterpillar, including reinforcing elements made in one piece with guides placed at a certain distance from each other along the length, steel cord in the form of a cable, covering reinforcing elements from the outside, vulcanized in one rubber in a single endless belt having treadmills and a supporting surface with grousers, characterized in that then the reinforcing element of the rubber-reinforced caterpillar is made of elastic material in the form of a strip of spring steel with ends bent to one side, the middle part of which is bent towards the bent ends by the Nycomed conchoid, obtained by increasing the radius vector of each point of this curve by the same segment :

where r is the radius vector;
φ ° is the angle of rotation of the radius vector;
“A” and “b” are given segments of constant length, with “b”> “a”. 2. The running system with a rubber-reinforced caterpillar of the friction engagement according to claim 1, characterized in that the width of the cylindrical rim of the drive wheel is greater than the width of the cylindrical rim of the guide wheel by a double gap between the inner side of the guide and the side of the cylindrical rim of the guide wheel with optimal tension rubber-reinforced caterpillars.

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