Enclosed multi-disc wet type braking device

Abstract

The invention discloses an enclosed multi-disc wet type braking device, comprising a hydraulic control system and a brake; wherein the brake comprises a case cylinder body, a single piston and a friction plate, the single piston is arranged in the case cylinder body and one end thereof is acted on the friction plate, the other end of the single piston is opened with a spring hole used for mounting an assisted brake spring, and two hydraulic chambers are formed between the inner wall of the case cylinder body and the single piston, one is a braking hydraulic chamber, and the other one is a releasing hydraulic chamber; and the hydraulic control system comprises a hydraulic control reversing valve and a reverse braking valve, the releasing hydraulic chamber is connected with the outlet of the reverse braking valve and the pilot hole of the hydraulic control reversing valve, and the braking hydraulic chamber is communicated with one hole site of the hydraulic control reversing valve. The braking device of the invention overcomes the defects of the prior art and has the characteristics of safety, reliability, good performance, simple structure, low price, energy conservation and long service life.

Description

technical field [0001] The invention relates to a fully enclosed multi-disc wet brake device. Background technique [0002] At present, the fully enclosed multi-disc wet brake device is widely used, especially in underground trackless mining equipment. It is mainly composed of a hydraulic control system and a brake, and the brake includes dynamic friction plates, static friction plates, pistons, compression Spring and housing cylinder. When in operation, the device mainly controls the hydraulic control system to supply or drain oil to the piston oil chamber in the brake, and pushes the piston to compress or loosen the dynamic and static friction plates, so as to realize the braking or driving of the vehicle. [0003] According to the difference in force exerted by the piston on the dynamic and static friction plates, the brake device is mainly divided into two types: hydraulic brake, spring release or spring brake, hydraulic release, among which: the former mostly adopts a ...

AI Technical Summary

Problems solved by technology

Due to the adoption of this dual-piston brake, the brake device is relatively large in size; and the service brake piston and the parking brake piston each have an independent hydraulic control system, which adopts different oil circuit controls and has a complex structure.

Since the double-acting brake uses spring force for parking braking and hydraulic braking for driving, the two energy sources act independently. In order to fully brake the vehicle, the requirements for the spring are relatively high, and the required hydraulic pressure is large and energy consumption is large. , due to the lack of auxiliary braking, there is a certain safety risk when the power or hydraulic system fails

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