Dynamic brake shoe pressure measurement apparatus

Abstract

The invention relates to a dynamic brake shoe pressure measurement apparatus. The apparatus comprises a brake shoe holder, force measurement sensors (3) and force measurement racks (6), wherein the force measurement sensors (3) and the force measurement racks (6) are arranged in the brake shoe holder. The force measurement sensors (3) are connected to the force measurement racks (6). When brake is applied to a train, the brake shoe holder drives a test device to contact with wheels. Each force measurement rack (6) transmits a counter-acting force of a braking force on the wheels to each connected force measurement sensor (3). Each force measurement sensor (3) outputs a signal to a data acquisition processing system on the train so as to acquire the braking force. Compared to the prior art, by using the apparatus of the invention, one group of force measurement sensors (3) and force measurement racks (6) are reconstructed and added in an existing wagon brake beam brake shoe holder so that unification of two functions of normal operation of a wagon and real-time monitoring of brake shoe pressure is realized; and the apparatus possesses advantages of high interchangeability, flexible measurement, a long service life and the like.

Description

technical field [0001] The invention relates to the field of railway vehicle braking systems, in particular to a dynamic brake shoe pressure measuring device. Background technique [0002] The development of railway express trucks and heavy-duty trucks urgently requires the research and development of braking systems that are suitable for their respective technical conditions, especially the outstanding working conditions of trucks with huge differences in braking force between empty and heavy loads. The real braking transmission efficiency of heavy vehicles is one of the key indicators for the successful design of truck braking systems. The actual braking pressure of the brake shoe and the transmission efficiency of the foundation braking device under different working conditions are one of the important parameters for the design and evaluation of the braking system. Inaccurate parameters will cause insufficient braking force when the vehicle is heavily loaded and excessive...

AI Technical Summary

Problems solved by technology

However, the original design adds obstacles to the direct measurement of the brake pressure of the brake shoes. The main obstacles are analyzed as follows: the structure of the brake shoes on the dynamic running vehicle is not allowed to be modified, and the synthetic brake shoes with a high friction coefficient of the national standard are used, and their size parameters are fixed. Retrofitting the structure of the brake shoe holder is the only choice; since the installation space and installation method of the truck foundation brake device have specified requirements, there is a certain limit requirement for the outer dimension of the brake shoe holder; The existence of the brake shoe holder, the part of the brake shoe holder close to the contact surface of the brake shoe holder and the brake shoe is passed through by the through hole

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