RU214936U1 - Roller drive vehicle wheels - Google Patents

Abstract

The utility model relates to the field of transport, namely to roller drives for wheels, and can be used in the construction of trucks and all-terrain vehicles. The drive for the wheels of the vehicle includes a rotating propeller (1) placed between two adjacent wheels (2), containing a cylindrical element (3), along the circumference of which the main engagement elements (4) are fixed, made with the possibility of being placed in the transverse grooves (7) of the protectors ( 6) tires of both wheels (2). On the cylindrical element (1), additional engagement elements (5) are also fixed along the circumference, placed between the main engagement elements (4) and protruding from the center of the cylindrical element (3) at a smaller distance than the main engagement elements (4). At the same time, additional engagement elements (5) are installed with the possibility of abutting against the front surface (8) of the tread (6) of the tires of both wheels (2). EFFECT: reduction of wheel tread wear by a roller drive. 4 w.p. f-ly, 2 ill.

Description

Technical field

[01] The utility model relates to the field of transport, namely to roller drives for wheels, and can be used in the construction of trucks and all-terrain vehicles.

State of the art

[02] A roller drive (Robson drive) is used to transfer torque from the engine to the wheels using a rotating element ("roller") in contact with the tire tread of two tandem (side-by-side) wheels.

[03] The most effective is the "gear" version of the roller drive design. Such a design, in particular, is described in the RF patent for the invention RU 2458801, 08/20/2012 (the closest analogue of the utility model). The drive includes a cylindrical mover placed between the wheels and rigidly connected to the axle shafts of the axles. At the same time, to reduce the slippage of the mover between the wheel treads, engagement elements in the form of spiral ribs are welded onto its surface, the slope of which corresponds to the slope of the transverse grooves of the treads. The disadvantage of this design is the increased wear of the rubber wheels. Since the engagement elements (ribs) are located in the tread grooves with a large clearance, the protruding part of the tire tread is in a free state during engagement and is subjected to bending by the engagement elements.

[04] Thus, the main technical problem to be solved by the utility model is the rapid wear of tires when using a roller drive. This problem is especially relevant for vehicles using low pressure tires, such as ATVs.

Disclosure of the essence of the utility model

[05] The technical result of the utility model is to reduce the wear of the wheel tread by a roller drive.

[06] The specified technical result is achieved due to the fact that the roller drive for the wheels of the vehicle includes a rotating propeller placed between two adjacent wheels. The mover contains a cylindrical element, along the circumference of which the main elements of the engagement are fixed, made with the possibility of being placed in the transverse grooves of the tire treads of both wheels. In addition, additional engagement elements are fixed on the cylindrical element around the circumference, placed between the main engagement elements and protruding from the center of the cylindrical element at a smaller distance than the main engagement elements. At the same time, additional engagement elements are installed with the possibility of abutting against the front surface of the tire treads of both wheels.

[07] In addition, the specified technical result is achieved in private embodiments of the utility model due to the fact that:

[08] the main and additional elements of the engagement are made in the form of rods;

[09] the main and additional elements of the engagement are made in the form of protruding ribs;

[010] the main and additional elements of the engagement are made straight;

[011] the main and additional elements of the engagement have a bend corresponding to the shape of the transverse grooves of the tire treads of the wheels.

[012] In the claimed drive, in addition to the main engagement elements interacting with the inner part of the tread, there are also additional engagement elements that abut against the front surface outside the tread. These additional elements provide redistribution of the load on the tire surface, reduce bending tangential (lateral) forces on the protruding part of the tread, and also reduce the likelihood of slippage of the engagement elements relative to the wheel tread. As a result, tire wear is reduced.

Brief description of the drawings

[013] The design of the claimed drive is illustrated by drawings, where:

in fig. 1 shows a general view of the drive;

in fig. 2 shows a side view of the drive;

[014] The structural elements of the device are indicated in the drawings by the following positions:

1 - mover;

2 - wheel;

3 - cylindrical element of the mover;

4 - the main element of the engagement;

5 - additional engagement element;

6 - protector;

7 - transverse groove of the tread;

8 - the front surface of the tread;

9 - side surface of the tread.

Implementation of the utility model

[015] The claimed drive comprises at least one cylindrical mover (1) mounted on the vehicle frame between two adjacent wheels (2) with the possibility of rotation. The mover (1) has a central part in the form of a cylindrical element (hub, coupling, etc.) (3), on which two groups of engagement elements in contact with the wheels are rigidly fixed from the side surface along the circumference: the main engagement elements (4) and additional engagement elements (5). Said elements (4) and (5) are oriented along the transverse grooves (7) of the wheel tread (6), are distributed evenly with the same pitch, and together with the cylindrical element (3) form a three-dimensional body of revolution. The main engagement elements (5) are designed to transfer the main torque to the wheels (2). To do this, the main engagement elements (4) are placed in the transverse grooves (7) of the wheel tread (6) and exert pressure on the side surface (9) of the protruding part of the tread (6) in these grooves (7). Additional engagement elements (6) are placed between the main ones (5) with provision of alternation around the circumference of the cylindrical element (3) of the main (4) and additional (5) engagement elements. Additional elements of the engagement (5) are located radially deeper relative to the main elements (4) of the engagement, i.e. protrude relative to the center of the cylindrical element (3) at a smaller distance.

These additional elements of engagement (5) at the point of contact with the wheels (2) abut against the front surface (8) of the tread (6). At the same time, it is obvious that each group of elements (4) and (5) must be placed at the same distance from the center of the cylindrical element (3) in order to ensure the operability of the drive.

[016] The cylindrical element (3), as well as the main (4) and additional (5) engagement elements can have a different configuration. In particular, the cylindrical element may be, for example, a round disk (small thickness cylinder) or an elongated cylinder. Cylindrical element (2) can be made both hollow and solid. Engagement elements (4) and (5) can be made in the form of rods that are welded to the side or end surface of the cylindrical element (3) or in the form of extended ribs that can be made integral with the cylindrical element (3) of the mover (1). Thus, the mover (1) may be, for example, in the form of a drum or gear with two kinds of protruding "teeth" (ribs).

[017] The shape of the main (4) and additional (5) elements, as a rule, corresponds to the shape of the transverse grooves (7) of the tread (6). If the grooves are straight, then the elements (4) and (5) are also straight. If the grooves (7) have a bend, for example, are made oblique or spiral, then the elements (4) and (5) are made in a reciprocal form. However, with a sufficient width of the groove, an exact match of its shape with the shape of the engagement element is not necessary.

[018] It will also be obvious to a specialist in the art that the pitch between the main (4) and additional (5) engagement elements is selected based on the pitch and width of the grooves (7) of the tread (6), as well as the diameter of the wheels (2) and the propeller (1) to ensure coordination when engaging the propeller (1) and wheels (2). In this case, the radial arrangement of elements (4) and (5), i.e. the distance by which the element protrudes relative to the center of the cylindrical element (3) is selected based on the depth of the grooves (7) and the distance between the mover (2) and the wheel (3). In the vehicle, for each pair of tandem wheels, a separate propulsion unit is installed on each side of the vehicle.

[019] The claimed drive can operate in both active and passive modes. In the first case, the propeller (1) is directly driven by a shaft from the engine and transmits torque to both wheels (2). In the second case, one of the wheels of the vehicle is driven, and the mover (1), as an intermediate element, transmits torque from this wheel to the adjacent wheel. In any of the options, the main engagement elements (4) are placed in the grooves (7) of the tread (6) and exert pressure on the side surface (9) of the tread (i.e., its protruding parts), and the additional engagement elements are outside relative to the tread (6 ) and abut radially against its front surface (8), creating a frictional effect, which provides additional torsion force on the wheels (2), prevents excessive tangential (lateral) pressure on the protruding parts of the treads (6) and reduces slippage.

Claims (5)

1. Roller drive for vehicle wheels, including a rotating propeller (1) placed between two adjacent wheels (2), containing a cylindrical element (3), along the circumference of which the main engagement elements (4) are fixed, made with the possibility of placement in transverse grooves ( 7) protectors (6) of tires of both wheels (2), characterized in that on the cylindrical element (1) additional engagement elements (5) are fixed around the circumference, placed between the main engagement elements (4) and protruding from the center of the cylindrical element (3) at a shorter distance than the main engagement elements (4), while the additional engagement elements (5) are installed with the possibility of abutting against the front surface (8) of the tread (6) of the tires of both wheels (2). 2. The drive according to claim 1, characterized in that the main (4) and additional (5) elements of the engagement are made in the form of rods. 3. The drive according to claim. 1, characterized in that the main (4) and additional (5) engagement elements are made in the form of protruding ribs. 4. The drive according to claim. 1, characterized in that the main (4) and additional (5) engagement elements are made straight. 5. The drive according to claim 1, characterized in that the main (4) and additional (5) engagement elements have a bend corresponding to the shape of the transverse grooves (7) of the treads (6) of the wheel tires (2).

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