Small-diameter high-speed wheel device of unmanned system test platform fake car

Abstract

The invention belongs to the technical field of auto parts, and discloses a small-diameter high-speed wheel device of an unmanned system test platform fake car. The device comprises a metal hub, a rubber tire encapsulating the metal hub and an axle; the metal hub is of an integrated structure and comprises a rim, a center plate, a bearing block, a brake disc and radiating rib plates; the rim and the bearing block are fixedly connected through the center plate and a plurality of the radiating rib plates; the brake disc is located at one end of the bearing block; a pair of oppositely-arranged tapered roller bearings is arranged in the bearing block; the center plate is in the shape of a circular ring, and a plurality of air duct holes are evenly distributed in the circumferential direction;and the axle is fixed to the metal hub through a shaft shoulder and locknuts. According to the device, the overall outer diameter of a wheel can be smaller than 110 mm, and the device has the good heat dissipation capability and can run at the high speed higher than or equal to 50 km / h under the heavy load.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a small-diameter high-speed wheel device for a fake car on an unmanned driving system test platform. Background technique [0002] Unmanned driving system test platform vehicles generally use a simplified body model to simulate the driving state of the real vehicle, but once the traditional test platform vehicle collides with the real test vehicle, it is easy to cause damage to the core components of the unmanned driving system. With the development of unmanned driving technology, the method of integrating the driving system on the chassis and simplifying the body with a detachable soft structure to form a test platform fake car has begun to attract people's attention. At present, the small wheels of unmanned driving system test platform vehicles are generally composed of metal wheels and rubber tires. The tire types are mostly pneumatic tires and solid rubber tires. Pneumati...

AI Technical Summary

Problems solved by technology

Due to the hysteresis loss during the rolling process of the tire, that is, the energy consumed by the tire when it is loaded and deformed cannot be fully recovered when it is unloaded and recovered, and a part of the energy is consumed in the internal friction loss of the tire to generate heat. This phenomenon is especially true for solid tires. Obviously, under the combined effects of high temperature, heavy load, long-term high-speed operation and other unfavorable conditions, tires are prone to many defects such as expansion deformation, cracking and slippage, which affect the use

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