Brake cylinder clearance adjustment mechanism

Abstract

The invention relates to a brake cylinder clearance adjustment mechanism, and belongs to the technical field of vehicle transmission. The inner end of a piston pipe embedded in an inner cavity of a cylinder cover pipe of the mechanism is axially and fixedly connected with a piston, and a buffer spring is arranged between the cylinder cover pipe and the piston; the outer end of the piston pipe is fixedly connected with a guide resistance adjusting device body, and a square key groove and a wedge-shaped adjusting block mounting groove are axially formed in the cylinder cover pipe; a cone sleeve and a guide nut are engaged with the mounting end face in the guide resistance adjusting device body, and one end of the cone sleeve and one end of the guide nut abut against a resistance adjusting spring and a guide spring correspondingly; an adjusting lead screw shaft screwed with an adjusting nut is arranged in an inner hole of the guide nut, and a conical tooth sliding sleeve is arranged outside the adjusting nut; the outer circle of the conical tooth sliding sleeve is fixedly connected with a square key of the square key groove on the cylinder cover pipe, and a wedge-shaped adjusting block with the adjustable radial position is mounted in the wedge-shaped adjusting block mounting groove of the cylinder cover pipe, and the adjacent ends of the square key and the wedge-shaped adjusting block are provided with an outer wedge-shaped face and an inner wedge-shaped face correspondingly; by the adoption of the mechanism, the adjustable maximum adjustable-free stroke value of a brake cylinder is achieved, and the stable clearance adjusting amount is ensured.

Description

technical field [0001] The invention relates to a gap adjustment mechanism, in particular to a brake cylinder gap adjustment mechanism, which belongs to the technical field of vehicle braking. Background technique [0002] As far as the applicant knows, in the current common brake caliper unit structure with clearance adjustment function, the relief clearance in the steady state is usually determined by the maximum non-adjustment stroke of the brake cylinder, which depends on the clearance adjustment mechanism of the brake cylinder related part dimensions. For a long time, the structure of the traditional brake cylinder has determined that the maximum non-adjustable stroke is also determined after the size of the parts is determined, so that the release clearance of the brake caliper in a stable state is a certain value. To change the release clearance, the relevant parts in the brake cylinder clearance adjustment mechanism must be replaced. [0003] The search found that ...

AI Technical Summary

Problems solved by technology

However, the basic structure and working principle of the brake cylinder are significantly different from those of the aforementioned two patents. The gap adjustment stopper and the adjustment collar of the adjustment mechanism are subjected to axial loads, and the adjustment direction of the adjustment collar is also axial, so It is easy to loose the thread due to the working load, and other anti-loosening measures must be taken to ensure the stability of the gap adjustment, thus increasing the complexity of the structure

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