RU2376510C1 - Tank of tire-type pneumatic clutch - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in tire-type pneumatic clutches for torque transfer. Tank of tire-type pneumatic clutch contains sealing chamber, cord carcass, external and internal treads. Into mass of internal tread there are introduced spring insertions, located with similar pitch parallel to longitudinal axis of tank. Spring insertions can be implemented as punched and manufactured from material keeping its properties in the range of temperatures from minus 50°C up to plus 180°C. Spring insertions provides compensate residual bulk deformation of tank, providing clearance between internal tread and drum, and also provide compensate deflection of internal tread under dead weight in conditions of horizontal installation of clutch.

EFFECT: durability increasing of operation of working tire-type pneumatic clutch.

4 cl, 3 dwg

Description

The invention relates to mechanical engineering and can be used in pneumatic tire couplings for transmitting torque.

Known balloon tire pneumatic clutch (AS No. 213484, IPC F16D 25/04, publ. 12.03.68, BI No. 10) containing a cord frame, outer and inner tread rings, in which a friction layer is strengthened on the working surfaces of the balloon heat resistant rubber.

The closest in the set of essential features and the technical result achieved — the prototype — is a tire-pneumatic coupling balloon (AS No. 1698519, IPC F16D 25/04, publ. 15.12.91, BI No. 46), containing a sealing chamber, cord frame , outer and inner treads, in which the inner tread and adjacent frame and chamber zones in a section perpendicular to the longitudinal axis of the balloon are made wavy.

A disadvantage of the known cylinder designs is the sagging of the tread layer under its own weight, as well as under the influence of excessive pressure inside the cylinder. With prolonged exposure to large compressive forces, the material of the inner tread and adjacent sections of the cord carcass and the chamber receive a large residual compressive strain. The residual deformation when overpressure is released in the chamber prevents the restoration of the original dimensions of the cylinder and the creation of a gap between the cylinder and the drum, which does not allow the clutch to shut off. With a significant width of the cylinder, it is also possible sagging of the tread and sampling the gap between the cylinder and the drum in the horizontal installation of the coupling. Sampling the gap between the cylinder and the drum is the reason for the removal of the cylinder from operation, as the coupling becomes uncontrollable.

The technical result of the invention is the elimination of these disadvantages and the creation of a balloon tire-pneumatic coupling of a new design, which allows to increase the durability of the tire-pneumatic coupling.

The technical result is achieved by the fact that the inner tire protector of the tire-pneumatic coupling is equipped with spring inserts located with the same pitch parallel to the longitudinal axis of the cylinder.

The invention is illustrated by drawings:

figure 1 - coupling, a longitudinal section;

figure 2 - disconnected clutch, cross section;

figure 3 - included clutch, cross section.

The balloon-1 pneumatic coupling balloon 1 contains a sealing chamber 2, a cord frame 3, an outer tread 4 and an inner tread 5, spring inserts 6 located at the same pitch parallel to the longitudinal axis of the balloon in the array of inner tread 5.

The cylinder 1 is installed in the rim 7 of the coupling without a gap and fixed on it, inside the cylinder there is a drum 8 of the coupling with a gap 9. The rim and drum are rigidly fixed on the right and left parts of the shaft shaft (not shown).

The clutch works as follows.

When compressed air is supplied into the sealing chamber 2 of the cylinder 1, the gap 9 between the cylinder and the drum 8 is selected, while the cylinder 1 covers the drum 8 and due to friction between the inner surface of the cylinder and the outer surface of the drum 8, torque is transmitted.

When compressed air is released from the inner cavity of the sealing chamber 2, the inner protector 5 of the cylinder moves away from the drum 8, a gap 9 arises between the cylinder and the drum 8, and the clutch is disconnected. The right and left parts of the shaft line are disconnected.

When the cylinder is operating under conditions of transmission of significant torques, compressed air with significant pressure (up to 20 kgf / cm ² ) is supplied into the cylinder.

To increase the durability of the tire-pneumatic clutch, spring inserts 6 are inserted into the array of the inner tread 5 of the proposed balloon, located at the same pitch parallel to the longitudinal axis of the balloon 1. The spring inserts 6 are located with the same pitch inside the tread 5 for uniform compression of the drum. The spring inserts 6 compensate for the residual volumetric deformation of the cylinder, providing a gap between the inner tread 5 and the drum 8. The spring inserts 6 compensate for the sagging of the inner tread 5 under its own weight and in the conditions of horizontal installation of the coupling. The design of the spring inserts 6 ensures their operation under conditions of elastic deformation. Spring inserts 6 can be made perforated, which allows you to securely fix them in the array of the inner tread 5 of the container. The spring inserts 6 are made of materials that retain their properties in the temperature range from minus 50 ° C to plus 180 ° C, for example, of steel, since in the manufacture of the balloon is vulcanized at elevated temperatures. The lower limit of the temperature range ensures the operation of pneumatic pneumatic couplings with the proposed spring inserts in the Far North.

The manufacture of the balloon tire-pneumatic clutch with spring inserts inside the tread in the conditions of tire production is as follows. A rubber sealing chamber 2 is made, equipped with a pipe fitting (not shown). After vulcanization of the chamber, it is filled with compressed air to a straightened state. A cord frame 3, an outer tread 4 and an inner tread 5 are placed on the camera. Using a guide template, the spring inserts 6 are placed with the same pitch parallel to the longitudinal axis of the cylinder in the array of the inner tread 5. The cylinder blank is placed in the mold for further vulcanization.

The proposed design of the tire-pneumatic clutch balloon with spring inserts inside the tread allows to increase the durability of the tire-pneumatic clutch.

Claims (4)

1. The balloon tire-pneumatic clutch containing a sealing chamber, the cord frame, the outer and inner treads, characterized in that the inner tread is equipped with spring inserts located at the same pitch parallel to the longitudinal axis of the cylinder. 2. The balloon tire-pneumatic clutch according to claim 1, characterized in that the spring inserts can be made perforated. 3. The balloon tire-pneumatic coupling according to claim 1, characterized in that the design of the spring inserts ensures their operation under conditions of elastic deformation. 4. The balloon tire-pneumatic clutch according to claim 1, characterized in that the spring inserts are made of material that retains its properties in the temperature range from -50 ° C to + 180 ° C.

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