A Parking Brake with Braking Force Automatic Compensation Function

Abstract

The invention discloses a parking brake with automatic braking force compensation function, which comprises a brake oil cylinder and a piston arranged in the brake oil cylinder which can move along the axial direction. The inner cavity of the piston is provided with a brake assembly. A plurality of support guides, parking elastic components and compensation devices are respectively installed on the piston along the circumferential direction, and a spring cover is fixedly installed on one side of the brake cylinder; one end of the support guide device is fixedly installed on the spring cover, and the other One end extends to the rear end of the brake assembly and defines the position of the brake assembly in the initial state; the parking elastic assembly and the compensation device are fixedly connected with the spring cover, and when the brake assembly is worn, the compensation device is suitable for The elastic force of the parking elastic component is compensated. The invention adopts a compensating device with a mechanical structure to automatically compensate the parking braking force, thereby reducing the manufacturing cost, and at the same time, it can also provide good compensation for the parking force when the vehicle system fails, thereby improving the safety factor of the vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle braking, in particular to a parking brake with a braking force automatic compensation function. Background technique [0002] The parking brake usually refers to the manual brake installed on the motor vehicle, referred to as the hand brake, which is used to stabilize the vehicle after the vehicle has stopped, so as to avoid accidents caused by the vehicle slipping when the vehicle is parked on a slope. The vehicle brake can be used temporarily or combined with the service brake for emergency braking. [0003] For safety considerations, the parking brakes of traditional construction machinery vehicles are generally closed structures, that is, after the power source is cut off, the parking brakes can rely on springs to compress the friction pair to achieve braking. However, as the brake is used for a long time, when the friction plate is worn out, the spring force decreases due to the smaller comp...

AI Technical Summary

Problems solved by technology

With the wear of the friction plate, the spring compression will gradually decrease, which will lead to the gradual attenuation of the spring force, which will lead to insufficient parking brake torque, resulting in dangerous situations such as unstable parking or even parking slides.

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