SU1657414A1 - Vehicle wheel - Google Patents

Description

The invention relates to the tire industry.

The purpose of the invention is to increase the service life and maintainability.

FIG. 1 shows the proposed wheel, a general view; in fig. 2 - section A-A in FIG. one; in fig. 3 is a section BB in FIG.

The vehicle wheel contains a rim 1, a hollow tire 2, a main pneumatic chamber 3, an annular semi-rigid liner consisting of a base 4 and two walls 5 grasping the main pneumatic chamber, an additional pneumatic chamber 6 grasping the outer surface of the liner base, anti-skid chain, which made and the form of metal spikes 7, interconnected by means of hinges 8 and installed in the U-shaped recess 9, made in the center of the forming tire, i.e. in its working surface. Dt effective work liner in the tire on its sides in the area

the base of the liner is made from the inner surfaces of the shoulder 10, and on the outer side - samples 11. At the same time, the shelf 12 of the U-shaped groove of the tire is made with radius grooves 13 located on its surface facing the bottom of the liner: a section of the road on which increased adhesion of the tire wheel to the road is required, by any known method (automatically or manually), pressure is released in the additional pneumatic chamber 6, for example, on one the atmosphere. As a result, the base A of the liner, under the influence of the own weight of the vehicle, begins to press on the shelf 12 of the recess, and it presses on the anti-slip chain. As a result, the spikes protrude beyond the working surface of the tire 2 and are introduced into the road (ground, snow-covered flooring), providing an increase in traction. At the same time, the depth,

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The turn 7 to the road is controlled by the pressure in the additional chamber 6. After the vehicle passes through an adverse part of the road, the additional chamber 6 is pumped through the spool attached to the rim 1 (the spools of chambers 3 and 6 are not shown in the drawings). As a result, the anti-skid spikes 7 stop protruding beyond the working surface of the tire. When implementing the proposed technical solution, it is necessary to take into account the fact that the outer diameter of the base 4 of the liner, which determines the height of the recess 9 of the tire 2, is in its optimal dimensions 70-85% of the external diameter of the tire. Deviation from this value both in one and in the other direction leads to a decrease in the effectiveness of the anti-skid chain to adhere to the road and, therefore, it is impractical. It should also be avenged that the size of the radial recess 13, performed in the shelf 12 of the U-shaped recess 9 of the tire 2, should be at least 1/5 of the distance between adjacent recesses, but not more than 1/4 of this distance since otherwise, respectively, it becomes possible to break the communication between the two parts of the additional chamber 6 and the height of the anti-slip spike 7 sharply decreases. Analysis of the proposed wheel shows significant advantages in terms of improving the comfort of using the vehicle; there is no vehicle vibration when using the anti-skid chain; anti-skid spikes are quickly exposed and removed; the spike outcrop is simplified; the process of uncovering spikes and their elimination is carried out at any time of the year under any conditions, including without stopping the vehicle; the amount of spikes on the working surface of the tire can be adjusted. The execution of the anti-spalling chain in the form of pivotally connected spikes allows

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increase their lifespan at least 2-3 times. It should also be noted that with a decrease in pressure in the additional chamber and the transition of spikes to the working state, the contact area of the tire with the road increases, which also leads to an increase in the traction force of the vehicle wheel with the road. When the additional chamber is pumped up somewhat above the norm, the contact area of the tire with the road decreases, and this leads to an increase in the passability of the tires.

Claims (2)

1. A vehicle wheel containing a pneumatic tire mounted on the rim with a main and additional cavities made in the protector, in which the main and additional chambers with valve devices for communication with the source of pressurization, as well as anti-skid elements, respectively, are located the fact that, in order to increase service life and maintainability, the working surface of the tread is made with a recess of the U-shaped cross-section, open outward in the center of its forming, in which contains a tape of spikes pivotally interconnected, an additional camera is mounted coaxially with the main camera, and the base of the tread recess is made with radial grooves for connecting the cavities of the additional camera located on both sides of the recess between each other. I 2. The wheel according to claim 1, characterized in that the partition in the tread between the main and additional chambers is designed as an annular semi-rigid liner, the side and transverse walls of which are facing the rim to grip the main chamber and with samples for communication with the shoulders on the sidewalls of the tire. I t FIG. 2