Heavy duty truck wet-type multiple-disk brake

Abstract

The invention relates to a heavy duty truck wet-type multiple-disk brake. At least three parking spring seats and resetting spring seats are evenly distributed on a first shell and a second shell respectively in the peripheral direction. Parking braking spring sets are arranged in the parking spring seats and abut against a parking push ring which is arranged on one side of a push disk of a traveling braking piston. Resetting springs are arranged on the resetting spring seats and abut against the other side of the push disk of the traveling braking piston. The traveling braking piston is arranged in a traveling braking oil cavity of the first shell, and a parking braking releasing piston is arranged in a parking braking releasing oil cavity of the second shell. A push rod of the parking braking releasing piston is connected with the parking push ring. A manual releasing mechanism connected to the parking push ring is supported on the first shell. The heavy duty truck wet-type multiple-disk brake is reasonable and compact in structure, convenient to machine and install, and capable of integrating the three functions of traveling braking, emergency braking and parking braking and releasing braking after a hydraulic system breaks down.

Description

technical field [0001] The invention relates to a heavy-duty vehicle wet multi-disk brake, which belongs to the technical field of heavy-duty vehicle braking. Background technique [0002] The braking system is one of the most important components of a car, and its performance directly affects the safe operation of the car. Heavy-duty vehicle brakes are mainly composed of service brake devices, emergency brake devices and parking brake devices. The earliest heavy-duty vehicle brakes used three mechanical independent caliper brake devices to achieve three braking functions. The brake with this structure required three brake devices. The structure was complex, and the caliper brake wear was large, requiring Regularly adjust the braking clearance of each braking device, which is easily affected by the driving environment and has a low service life. At present, a heavy-duty vehicle brake is a combination of hydraulic pressure and machinery. This type of brake mainly includes s...

AI Technical Summary

Problems solved by technology

However, the piston seat cover assembly of the above-mentioned brake is installed on the axle housing through fasteners, and the elastic seat cover is installed on the brake disc housing through fasteners, and the parking brake oil passage is arranged on the elastic seat cover and the system. On the moving disc shell, it is difficult to process and install

Secondly, since the top ends of both ends of the combined compression spring are on the spring seat cover and the parking piston, the friction pair will drag and wear during driving, which will generate heat and affect the service life of the brake.

Furthermore, after the hydraulic system breaks down, because the brake cannot be released, it is impossible to drag the heavy-duty vehicle.

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