Vehicle wheel-side integrated hydraulic retarder and friction brake device

Abstract

The invention discloses a vehicle hub-type integrated hydraulic retardance and friction brake device, which comprises a hydraulic retarder, a brake caliper body, friction block groups and a brake disc, wherein the hydraulic retarder comprises traction wheels, fixed wheels and a shell; a retardance working chamber is formed in the shell; the shell is arranged on a vehicle rear axle; the fixed wheels and the traction wheels are respectively arranged in the retardance working chamber, and the fixed wheels are fixedly connected with the shell; the traction wheels are movably connected with a vehicle semiaxle used for being connected with vehicle driving wheels; the brake caliper body is fixedly connected with the shell; the brake disc is fixedly connected onto the vehicle semiaxle; the friction block groups are arranged on the brake caliper body, and are matched with the brake disc, so that when a vehicle brakes to enable the brake caliper body to perform action, the friction block groups are pressed to the brake disc by the brake caliper body to generate a friction brake force to hinder the rotation of the driving wheels. According to the vehicle hub-type integrated hydraulic retardance and friction brake device disclosed by the invention, the hydraulic retardance and friction brake function on the driving wheels is realized; the structure is compact, and control is flexible.

Description

technical field [0001] The invention relates to a vehicle wheel-side integrated hydraulic retarder and friction braking device, which belongs to the technical field of vehicle braking. Background technique [0002] At present, when medium- and heavy-duty vehicles brake continuously for a long time, brake with high intensity or brake frequently, the temperature of the brake disc or brake drum will increase significantly, resulting in a decrease in the friction factor, aggravated wear, and partial braking performance. Dangerous thermal recession phenomenon even total loss. Although the application of anti-lock brake system (ABS) and electronic brake force distribution system (EBD) has improved the stability and reliability of vehicle braking, they have little effect on the thermal fading phenomenon of brakes. At present, many countries including my country have clearly stipulated that passenger cars and trucks above a certain specification must be equipped with auxiliary brak...

AI Technical Summary

Problems solved by technology

However, the retarding braking torque of this hydraulic retarder acting on each wheel cannot be independently adjusted, and requires an oil-water heat exchanger and its connecting pipes with the engine cooling system, which is relatively large in size, high in cost and difficult to assemble. Relatively difficult, not suitable for high-quality integrated control with friction brakes

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