A brake cylinder with force amplification function

Abstract

The invention relates to a braking cylinder with a force multiplication function. The braking cylinder comprises a cylinder body and a cylinder cover, wherein a piston, a guide spring, a guide nut, a conical sleeve, an adjustment shaft assembly and a clearance adjustment nut assembly are arranged in the cylinder body; the clearance adjustment nut assembly comprises a clearance adjustment nut, a clearance adjustment sleeve and a clearance adjustment spring; a groove extending along the axial direction of the outer circumferential surface of the clearance adjustment sleeve is formed in the outer circumferential surface; a relieve clearance set is arranged in the groove; a relieve clearance is reserved between the relieve clearance set and an inner boss of the cylinder body; a group of inner lever assemblies which are uniformly arranged along the circumferential direction of an adjustment shaft are further arranged in the cylinder body; and one end of each inner lever assembly presses against a thrust sleeve, and the other end of each inner lever assembly presses against the piston. The braking cylinder has the advantages of compact structure and easiness in implementation; under the same atmosphere pressure condition, higher braking force can be output without enlarging the volume of the braking cylinder body, so that high braking force and high parking force are realized; and furthermore, excessive elastic deformation of a lever can be identified.

Description

technical field [0001] The invention relates to a brake device, in particular to a brake cylinder with a force amplification function, which belongs to the technical field of vehicle brake systems. Background technique [0002] The existing rail vehicle foundation braking device mainly includes a brake caliper unit, a brake disc and a brake pad. The brake cylinder in the brake caliper unit is generally not equipped with an amplification function due to its small size and compact structure. The braking force is amplified by the external lever of the brake caliper unit, that is to say, the basic braking device generally only has a one-stage amplification function. After searching, it was found that the Chinese patent No. 201180033073.5 discloses a brake cylinder device and a disc brake device. The amplification mechanism of the brake cylinder uses a rotating inclined surface to amplify the braking force. The design and processing of the parts are complicated, and the braking o...

AI Technical Summary

Problems solved by technology

The main reason is that the external lever is generally designed to be relatively slender, and its elastic deformation is difficult to control during the braking process, and the brake regulator cannot recognize that the excessive elastic deformation of the lever causes the disc relief gap to exceed the predetermined value, making The brake adjuster adjusts the clearance when there is no need to adjust the relief clearance, and finally causes the disc relief clearance to gradually decrease after the brake caliper relief is completed.

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