Brake shoe abrasion residual thickness measuring scale

Abstract

The invention relates to a brake shoe abrasion residual thickness measuring scale, which is characterized by comprising a reference arm, a chute arm, a sliding base, a vernier base and a vernier scale, wherein the reference arm comprises a main support arm, an upper arm, a middle arm and a lower arm, and the upper arm, the middle arm and the lower arm are disposed integrally with the main support arm; the bottom part of the upper arm is fixedly connected to an upper positioning leg; the front end of the lower arm is fixedly connected to a lower positioning leg; the front end of the middle arm and the front side surface of the lower positioning leg are located at a back circular arc of a brake shoe; the chute arm comprises a cross arm and an oblique arm which are integrally disposed; the rear end of the cross arm is fixedly connected with the front end of the upper arm through a cushion block; the oblique arm is provided with an arc-shaped groove, and the arc-shaped groove is concentric with the back circular arc of the brake shoe; the sliding base is slidably connected with the arc-shaped groove through a positioning pin; the vernier base is fixedly connected at one side of the sliding base; and the vernier scale is slidably arranged in the vernier base along radial direction of the back circular arc of the brake shoe.

Description

technical field [0001] The invention relates to a measuring tool in the field of railway vehicles, in particular to a measuring ruler for the remaining thickness of brake shoe wear. Background technique [0002] With the use and development of domestic railway freight cars, the cost of vehicle operation has attracted more and more attention from the industry. Brake shoes are typical wearing parts. Studying their wear during operation helps to understand the manufacturing quality of brake shoes, and can also determine the replacement time of brake shoes more reasonably to reduce the amount of brake shoe replacement. The amount of brake shoe wear is directly related to the mileage of the vehicle. By detecting the thickness of the brake shoe at the same position before and after the vehicle runs for a certain distance, the thickness change of the brake shoe and the thickness change per unit mileage can be obtained. However, the shape of the brake shoe of the iron-wheeled freig...

AI Technical Summary

Problems solved by technology

However, the shape of the brake shoes of iron-wheeled freight cars is relatively complex, and specific points must be detected, so it is necessary to design a special brake shoe thickness measurement tool

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