RU2756748C1 - Variable geometry vehicle wheel - Google Patents

Abstract

FIELD: vehicles.

SUBSTANCE: invention relates to the field of vehicle wheels and accessories for them, designed to increase the adhesion of the wheels to the road surface. The wheel contains a disk, shaping stops, movably fixed at one end on the disk with the possibility of turning around an axis, a tire rim. The tire rim consists of elementary rigid metal tracks, movably connected to each other in a closed loop with the help of ties and links. There are also shaping levers fixed at one end on the shaping stops with the possibility of rotation around the axis, and at the other end they are movably connected to the shackles with the possibility of rotation around the axis. The shaping levers are connected to the rim tracks through shackles with the possibility of mechanical formation during movement of the optimal rim configuration in accordance with road conditions in off-road and difficult terrain, in winter field conditions.

EFFECT: increasing cross-country ability of a wheeled vehicle in off-road conditions.

1 cl, 3 dwg

Description

The invention relates to the field of vehicle wheels and accessories for them, designed to increase the adhesion of the wheels to the road surface. It can be used on vehicles operating in the field, off-road and in difficult terrain, in winter field conditions. Known is a wheel containing a disc, movable shaping stops, a low-pressure rim made of tire rubber, filled with liquid or gas (see patent for invention RU2661013, access PatentDB.ru ›patent / 2661013). Disadvantages of the known design: 1. When hitting an obstacle, for example a log, the low pressure rim takes the shape of an obstacle, that is, a log, and does not provide the vehicle's passability. 2. When driving on hard-to-pass road sections with sharp stones and other objects, the reliability of the wheel decreases due to the possibility of puncture of tire rubber. 3. When driving on washed-out dirt roads and covered with snow, the low-pressure tire rubber rim does not provide proper traction due to insufficient traction in the area of contact of the wheel with the road. These disadvantages are eliminated in the claimed invention, which is aimed at solving the problem of increasing the cross-country ability of a wheeled vehicle in off-road conditions. The specified problem in the claimed invention is solved by using a rim structure composed of rigid metal tracks with rubberized lugs, coupled to the rim with ties and earrings and connected to the disk using shaping levers through movable stops. A rigid track makes it possible, when hitting a log, to move along it without changing the shape of the track, when hitting sharp objects, to exclude a puncture of the rim, when driving on snow-covered and icy terrain, due to the increased contact area and lugs, to exclude wheel slippage and thereby increase the passability of a wheeled vehicle in off-road conditions.

The drawings of the claimed invention are shown in FIG. 1 side view, Fig. 2 is a frontal view with a partial section of the structure along the bottom, FIG. 3 local views on the nodes of the fastening of tracks, buckles, shackles of levers and stops.

The positions in FIG. 1, 2, 3 indicate the following elements and nodes:

1 - truck,

2 - screed,

3 - earring,

4 - disk,

5 - lever,

6 - emphasis,

7 - bolt,

8 - nut,

9 - cotter pin,

10 - washer,

11 - lug.

FIG. 2 fastening elements: bolts, nuts, washers, cotter pins are shown in the form of a conditional image with dotted lines.

The purpose and interaction of elements and nodes is as follows.

Tracks 1 are rigid metal plates with lugs 11, covered with a thin layer of rubber along the contact surface with the road.

The tracks 1 have connecting holes in the bosses (in Figs. 1-3 bosses and the holes in them are not conventionally designated by the positions) and serve to form an assembly unit - a rim after mechanically connecting them to each other due to ties 2 and earrings 3 using bolts 7, nuts 8, washers 10 and cotter pins 9.

The number of tracks 1 is selected based on the diameter of the disc 4 and the diameter of the round rim formed by the tracks and is on average 24.

A prerequisite for choosing the number of tracks is the presence in the assembled rim of one track, which is connected to two adjacent ones with the help of couplers 2. The presence of tracks 1, mechanically movably connected to each other into an assembly unit - the rim (in Figs. 1-3, the rim is not conventionally indicated ), with the possibility of changing the configuration of the rim from round, oval, elliptical to compositionally complex, combining a rectilinear section with an oval and transitional-elliptical (see Fig. 1) is a distinctive feature of the claimed invention, allowing to achieve a positive technical result to increase the cross-country ability of a wheeled vehicle in off-road conditions.

In the known design, it is not possible to achieve a compositionally complex configuration of the rim, combining a straight section with an oval and transitional-elliptical (see Fig. 1), since there is no power shaping system of levers 5, ties 2, earrings 3 with bolts 7 and nuts 8 between disc 4 and tire rubber rim.

Ties 2 are used to provide a movable fastening of the tracks 1 to each other on the rim sections that do not have the track links with the help of shackles 3.

The presence of movable couplers 2 is a distinctive feature of the claimed invention, which makes it possible to achieve a positive technical result to increase the cross-country ability of a wheeled vehicle in off-road conditions by increasing the contact area of the wheel with the road.

The shackle 3 serves for the movable connection of the tracks 1 to each other and also flexibly connects the rim with the disc 4 formed by the tracks 1 through the levers 5 and stops 6. The shackle 3 provides a movable fastening at three equidistant points: two points for two tracks 1 and at one point for two levers 5. The presence of earrings 3 is a distinctive feature of the claimed invention, which makes it possible to achieve a positive technical result to increase the cross-country ability of a wheeled vehicle in off-road conditions due to a wide range of variation

the configuration of the rim when rolling it, for example, over a log.

Disc 4 is intended for fastening the rim formed by tracks 1, ties 2, shackles 3, through levers 5 and stops 6 using bolts 7 and nuts 8.

The resulting assembly on the basis of the disc forms the wheel itself, which is bolted to the hub located on the drive shaft of the vehicle through the holes in the disc (not indicated by the position in FIGS. 1-3).

Levers 5 together with stops 6 perceive the force of gravity of the vehicle and torque from the disk 4 and transfer these forces to the rim to obtain its optimal configuration and rotational motion in accordance with the state of the road surface and its resistance to movement. The presence of levers 5 is a distinctive feature that provides a positive technical result to increase the cross-country ability of a wheeled vehicle in off-road conditions due to the formation of an optimal rim configuration in accordance with the weight of the vehicle, torque from the drive shaft and the resistance of the road surface.

The ratio of the diameter of the disc along the holes in it for fastening the stops 6 to the length of the lever 5 is in the range from 0.95 to 1.45, depending on the diameter of the round rim selected according to the technical capabilities of the vehicle.

The movable stops 6 are used to fasten the double-link links formed by the levers 5 at the points of their connections to the disc 4.

Bolts 7, nuts 8, cotter pins 9, washers 10 serve to fasten the wheel elements and ensure the rotation of these elements relative to each other when forming the optimal rim configuration.

The presence of bolts, nuts, cotter pins and washers connecting the disc 4 with stops 6, with levers 5, with shackles 3 and tracks 1 is a hallmark of the formation of an optimal rim configuration, providing a positive technical result due to the rigidity and increased resistance of the rim when overcoming obstacles in off-road conditions.

The lugs 11 are used to increase the adhesion of the wheel rim to the washed-out soil or to a snow-ice obstacle in off-road conditions.

The claimed design works as follows.

Under the weight of the vehicle when driving in off-road conditions, the tracks 1 in contact with the road surface initially form a rim element with a straight section made up of three tracks (see Fig. 1). With an increase in immersion in loose soil, in addition to the initially contacting three tracks, four more tracks begin to contact the roadway - two tracks each in front and behind the three already contacting tracks. Since the contact area of the rim element in this case increases significantly due to the rigidity of the tracks, the adhesion of the wheel to the lugs significantly increases and the wheel does not slip along the road surface.

The absence of wheel slippage when driving in off-road conditions on soft ground is a distinctive feature of the claimed invention, which makes it possible to achieve a positive technical result due to the rigidity of the tracks and the linkage system, which ensures the formation of an optimal configuration with a large contact area of the rim element with the road surface.

When hitting a log, the tracks of the rim abut against the surface of the log and, due to the rigidity of the tracks, they are sequentially superimposed on the surface of the log to raise the wheel to a height at which there is no stop and braking, and the shaping provides the optimal configuration of the rim, in which it overcomes the road unevenness in the form logs.

When driving on snowy and icy terrain, small pieces of snow and ice are compressed due to the lugs and gaps between the tracks and a rough surface is created on which the rim with lugs no longer slips, but rolls.

Claims (1)

A vehicle wheel with variable geometry, containing a disk, shaping stops fixed movably at one end on the disk with the ability to rotate around an axis, a tire rim, characterized in that the tire rim consists of element rigid metal tracks, movably connected to each other in a closed loop using couplers and earrings, there are shaping levers fixed at one end on the shaping stops with the possibility of rotation around the axis, and at the other end they are movably connected to the shackles with the possibility of rotation around the axis and the shaping levers are connected through the shackles to the rim tracks with the possibility of mechanical shaping during the movement of the optimal configuration of the rim according to road conditions.

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