CZ28460U1 - Antiskid device for automobile wheels with a disk arranged close to internal lateral plane of the wheel - Google Patents

Description

The technical solution relates to the field of anti-skid devices, in particular to anti-skid devices for automobile wheels with a disc arranged at the inner lateral plane of the wheel.

BACKGROUND OF THE INVENTION

Anti-skid devices for automobile wheels are known which are mounted on the automobile wheel. The anti-slip elements are generally in the form of adjustable arms which are provided with engagement surfaces. If necessary, these arms are brought into an operating position in which the engagement surfaces abut the peripheral surface of the tire. The arms are brought into working position either manually or by means of systems which are mechanical or pneumatic, resp. electric. Pneumatic control systems are generally used in commercial vehicles.

Known anti-skid devices for commercial vehicle wheels are complex due to the construction of a commercial vehicle wheel, have a large number of moving parts and have a high space requirement. In addition, the various types of known solutions have different properties, differing in reliability, price, and real usability.

The essence of the technical solution

The object of the invention is to provide an anti-skid device for automobile wheels with discs arranged at the inner lateral plane of the wheel, which in its basic and working position does not substantially protrude outside the outer lateral plane of the wheel, allows remote control, is simple and reliable in function and manageability.

This object is achieved by an anti-skid device for automobile wheels with discs arranged on the inner lateral plane of the wheel, having a support member attachable from the outside to the wheel disc according to a technical solution which is sliding in the direction parallel to the wheel axis A retractable body is provided in which arms are provided rotatable about axes parallel to the wheel axis and provided with engagement surfaces at their ends which abut the peripheral surface of the tire in the working position.

The anti-skid device is mounted on a support member in a guide, which preferably consists of at least two tubes mounted on the support member, each of which tubes displaceably accommodates one outer tube attached to the withdrawable body.

Tension springs are mounted in the tubes mounted on the support member, fastened with one end to the support member and the other ends to the extension body.

The anti-slip device is equipped with a drive for moving the telescopic body and for pivoting the arms with the engagement surfaces. The drive, which is pneumatic, comprises a source of compressed air, a bellows for the displacement of the telescopic body, pneumatic motors for pivoting the arms with engagement surfaces and control members. The control members are provided with electrically remote control elements.

The arms are rotatably supported on supports which are supported radially displaceably and spring-loaded in the telescopic body. This ensures that the engagement surfaces are in contact with the peripheral surface of the tire while driving.

Clarification of drawings

One possible embodiment of an anti-skid device according to the invention is shown in the accompanying drawings, wherein FIG. 1 is an oblique view of the anti-skid device in an assembled state prior to mounting on a wheel; FIG. 2 shows the anti-skid device of FIG. Fig. 4 is an oblique view of a wheel-mounted anti-slip device; Fig. 5 shows a wheel with an anti-slip device as seen in the direction of travel of the vehicle; Fig. 6 an oblique view of a wheel with anti-skid

FIG. 7 shows the anti-slip device in the extended position according to FIG. 1 without the wheel, FIG. 8 is an oblique view of the wheel with the anti-skid device with the arms rotated, FIG. Fig. 8, Fig. 10 is an oblique view of the wheel with the anti-skid device in the working position; and Fig. 11 is a cross-sectional view of the wheel with the anti-skid device in the position of Fig. 10.

Example of technical solution implementation

The anti-skid device has a support member 4 which is mounted on the outside to the wheel disc 3 with the tire 1 in a conventional manner, for example by means of screws and nuts. The disc 3 is located closer to the inner lateral plane of the wheel where it is connected to the rim 2. Thus, the anti-skid device practically does not protrude above the outer lateral plane of the wheel when mounted on the wheel or in the working position. This type of wheels have for example trucks, trucks, etc.

A guide is fastened to the support member 4, on which a sliding body 8 is displaceably mounted in a direction parallel to the wheel axis. The guide in the embodiment described here consists of two tubes 6 with axes parallel to the wheel axis. The tubes 6 are fastened to the support member 4 and are slidably mounted on the outer tubes 5 attached to the withdrawable body 8.

Inside the tubes 6, tension springs 7 are arranged between the support part 4 and the extension body 8, which attract the extension body 8 to the support part 4.

In the telescopic body 8, arms 9 are provided rotatable about axes parallel to the wheel axis, provided at their outer ends with engagement surfaces 10 substantially perpendicular to the arms 9.

For the displacement of the withdrawable body 8 and for the rotation of the arms 9, the device is provided with a drive, in this case pneumatic. The drive comprises a compressed air source 13 arranged on the support member 4. The compressed air source 13 is connected via control members 14 to bellows 15 for extending the extendable body 8 and to pneumatic motors 16 for pivoting arms 9 with engagement surfaces 10. The control members 14 have electrically operated control elements for remote control from the car cabin. The connection between the components of the pneumatic circuit can be made by pressure hoses (not shown).

In the mounted position, the device is attached to the disc 3 by means of the support 4 and the tension springs 7 pull the extension body 8 to the support part 4. The arms 9 with the engagement surfaces 10 are rotated to the basic position in which they do not project radially above the periphery of the extension body 8.

If the anti-skid device needs to be brought into working position, i.e. the engagement surfaces 10 abut on the circumferential surface of the tire 1, the electric control source 14 connects the compressed air source 13 to the interior space on the basis of an electric signal issued remotely from the car cabin. bellows 15.

By extending the bellows 15, the extension body 8 is moved out of the wheel against the force of the tension springs 7. Another electrical signal received by the respective control member 14 connects the compressed air source 13 to the pneumatic motors 16, which rotates the arms 9 to the engagement surfaces 10. In this state, the compressed air is discharged from the bellows 15 and the tension springs 7 pull the slide 8 to the support 4. The engagement surfaces 10 are moved to a position just above the circumferential surface of the tire L in this movement. The anti-skid device is in the working position. The engagement of the engagement surfaces 10 of the arms 9 on the circumferential surface of the tire 1 during travel allows the arms 9 to be rotatably supported on carriers 11 which are spring-loaded and displaceable in the radial direction in the slide-out body 8. The springs 12 secure the springs.

In order to return the anti-skid device to the home position, the pull-out body 8 is first moved out of the wheel as described above, the engagement surfaces 10 thus being out of contact with the circumferential surface of the tire 1. In this position wherein the compressed air is discharged from the pneumatic motors 16 and brought into their second compartments, thereby rotating the arms 9 back to their home position via transmission. In this state, after the compressed air has been released from the bellows 15, the extension body 8 is brought back into the basic position by the tension springs 7.

-2GB 28460 U1

The arms 9 are four in the exemplary embodiment. Their number may vary according to spatial conditions.

PROTECTION REQUIREMENTS

Claims (8)

Anti-skid device for automobile wheels with discs (3) arranged at an inner lateral plane of a wheel, having a support member (4) attachable externally to the wheel disc (3), characterized in that it is slidably mounted on the support member (4) A retractable body (8) is mounted in a direction parallel to the wheel axis, in which arms (9) provided with engagement surfaces (10) at their ends abutting on the circumferential surface of the tire (1) are mounted rotatably about axes parallel to the wheel axis. Anti-slip device according to claim 1, characterized in that the telescopic body (8) is mounted on a support part (4) in a guide. Anti-slip device according to claim 2, characterized in that the guide is formed by at least two pipes (6) on each of which is slidably mounted one outer pipe (5) attached to the withdrawable body (8). Anti-skid device according to claim 3, characterized in that tension tubes (7) are fixed in the tubes (6), fastened with one end to the support part (4) and the other ends to the extension body (8). Anti-skid device according to claim 1, characterized in that it is provided with a drive for moving the telescopic body (8) and for pivoting the arms (9) with the engagement surfaces (10). Anti-slip device according to claim 5, characterized in that the drive, which is pneumatic, comprises a source (13) of compressed air, a bellows (15) for moving the telescopic body (8), pneumatic motors (16) for pivoting the arms (9). with engagement surfaces (10) and control members (14). Anti-slip device according to claim 5, characterized in that the control members (14) are provided with electrically remote control elements. Anti-slip device according to claim 1, characterized in that the arms (9) are rotatably supported on supports (11) which are mounted radially displaceably and spring-loaded in the extension body (8).