RU2269446C2 - Unit of steerable drive wheel - Google Patents

Abstract

FIELD: transport and technological engineering.

SUBSTANCE: invention relates to units of base chassis of transport and technological vehicles. Proposed unit of steerable drive wheels includes hollow bracket on which running-paired wheels with rotation drive are installed by means of hollow rotary trunnion. Said drive is made in form of shaft-gear, different-diameter bevel gears fitted on shaft-gear to transmit rotation to running-paired wheels. Bevel gears are orientated in space by their cones pointed to each other, and they are in meshing with two bevel gear wheels whose sizes provide equal gear ratio of both bevel gear trains. Gear wheels are installed on axle-shafts arranged in side brackets of rotary trunnion for unlimited rotation around their axis to provide intersection of axes with each other and with axis of shaft-gear in one point.

EFFECT: reduced run-around arm at mounting of paired wheels with resulting reduced force required for turning of wheels.

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Description

The invention relates to nodes of the base chassis of transport and technological machines and can be used in transport and technological engineering.

Known drive driven wheel assembly, including a bracket on which is mounted rotatably with a wheel mounted about a vertical axis. (Tractors. Part 1. Designs: Textbook for universities / V.T. Vasiliev, V.V.Budko, V.V. Guskov, etc. Under the general editorship of V.V. Guskov. - Mn .: Higher School, 1979, 232 p., P. 162, Fig. 9.4).

The disadvantage of this node drive driven wheels is the lack of a drive rotation of the wheel, which reduces its performance.

The closest technical solution is the drive wheel assembly, including a hollow bracket mounted on it with the possibility of unlimited rotation around the vertical axis of the hollow pivot pin with a side bracket, a twin wheel rotation drive located inside the bracket and the pivot pin and consisting of a gear shaft mounted on it a bevel gear meshing with a bevel gear mounted on the axle shaft located in the side bracket of the pivot pin with possible unlimited rotation around its axis, twin wheels rigidly attached to the axle shaft (Tractors. Part 1. Designs: Textbook for universities / V.T. Vasiliev, V.V.Budko, V.V. Guskov, etc. Under General editorship of V.V. Guskov. - Mn .: Higher School, 1979, - 232 p., p. 147, Fig. 8.8).

The disadvantage of this node drive driven wheels is a significant increase in the size of the free space required to rotate the wheel with an increase in its width.

This drawback is eliminated by the fact that in the node of the driven steered wheel, including a hollow bracket mounted on it with the possibility of unlimited rotation around a vertical axis, a hollow pivot pin with a side bracket, a twin-wheel rotation drive located inside the bracket and a pivot pin and consisting of a gear shaft mounted on it with a bevel gear meshing with a bevel gear mounted on the axle shaft located in the side bracket of the rotary pin with the possibility of unlimited rotation around its axis, twin wheels rigidly attached to the axle shaft, a hollow pivot pin made with two side brackets mounted symmetrically to each other, the drive of rotation of the paired wheels is made in the form of a pinion shaft, two bevel gears of different diameters located on it, oriented in space cones towards each other and meshed with two bevel gears, the dimensions of which ensure the equality of the gear ratios of both bevel gears aq mounted on spindles, arranged in the side brackets pivot pin with the possibility of unlimited rotation around its axis so that their axes intersect with each other and the pinion shaft with an axis at a single point, wherein each of the half-axles rigidly mounted wheel.

The proposed design provides a decrease in the running distance when installing twin wheels, which leads to a decrease in the force required to rotate the wheels.

In the patent and scientific and technical literature, we did not find such a bridge design with swivel wheels.

The drawing shows a diagram of a node drive driven wheels in the context.

The drive wheel assembly consists of a hollow pivot pin 1, made with two brackets 2 mounted symmetrically to each other, in which a twin wheel drive 3 is mounted, made in the form of a pinion shaft 4, mounted on it using splines 5 of two bevel gears 6 and 7 of different diameters, oriented in space by cones towards each other, meshed with two bevel gears, the diameters of which provide the same gear ratio 8 and 9, mounted on ah 10 in bearings 11 arranged in the brackets 1, 2 of a rotary pin with the possibility of unlimited rotation around its axis so that their axes intersect with each other and the pinion 4 at one point with the axis of the shaft, for transmitting rotation of the driving wheel 12 through the flange 13.

The site of the driven steered wheels works as follows. The pinion shaft 4 receives rotation from an external source and, through two bevel gears of different diameters 6 and 7, transfers to bevel gears, the diameters of which provide the same gear ratio 8 and 9 and drive the running wheels 12 through the shafts 10 and flange 13.

The proposed design provides a decrease in the running distance when installing twin wheels, which leads to a decrease in the force required to rotate the wheels.

Claims (1)

Drive driven wheel assembly, including a hollow bracket, on which running-twin wheels with a drive of their rotation are mounted using a hollow rotary pin, characterized in that said rotation drive is made in the form of a pinion shaft, two bevel gears of different diameters placed on it for transmission rotation on the running-twin wheels, while the mentioned bevel gears are oriented in space by cones towards each other and are meshed with two bevel gears, the sizes of which x ensure the equality of the gear ratios of both bevel gears mounted on the axles located in the side brackets of the pivot pin with the possibility of unlimited rotation around its axis so that their axes intersect each other and with the axis of the pinion shaft at one point.