Shrink ratio test stand for testing performance of brake material for railway train

Abstract

The invention relates to a shrink ratio test stand for testing the performance of a brake material for a railway train. The analysis on the performance of the brake material is the important technical problem of research on all friction materials. The current standard regulates that the performance detection of all the brake materials for the railway and the railway trains can be tested on a 1:1 bench. Currently, few 1:1 railway train inertia braking benches are provided in China, so that the normal product detection is difficult to carry out. In the invention, a novel test bench for testing the performance of the brake material for the railway train, which consists of a driving mechanism, an inertia wheel configuration mechanism and the like, is arranged; a brake engineering principle isclosely combined; and a small sample geometric simulation shrink ratio test mode is used to be consistent with a 1:1 bench test mode. Due to the adoption of the shrink ratio test stand, a result corresponding to test data of the 1:1 bench can be obtained; and the consistency of the testing condition and the using working condition of the shrink ratio test stand in the whole testing process is really reflected. The shrink ratio test stand is convenient to operate and has complete functions and high technology content. The gap of the industry in China is filled. The rapid development of the field of the brake material in the industry is promoted.

Description

technical field [0001] The invention belongs to the technical field of thermal shock braking test, and in particular relates to a scaling test bench for performance testing of braking materials for rail trains. Background technique [0002] There are many kinds of friction materials for rail train braking, mainly new materials such as resin composite materials, powder metallurgy materials, etc. Rail train braking materials are required to have high energy density, high heat resistance and high strength. It can maintain the stability of braking performance under various working conditions such as high speed, high temperature, high specific pressure, large inertia, wind, rain, ice and snow, and can be used in emergency braking, long-distance dragging braking, instantaneous braking, and continuous braking. In the state, its braking performance is not attenuated. The friction material for braking absorbs relatively large energy during the working process, especially the hug...

AI Technical Summary

Problems solved by technology

According to the relevant current national standards, the performance testing of all railway and rail train braking materials must be tested on a 1:1 bench, and each braking index meets the specified value of the international standard. Regularly go to the specified department for inspection. Due to the fact that there are too few 1:1 rail train inertial braking benches (hereinafter referred to as 1:1 benches) in China, it is difficult to detect normal products and cannot meet the urgent needs of new material research and production support. ; 1:1 rigs are expensive, tens of millions of yuan a set, and ordinary enterprises and institutions are unable to invest

The test bench for the braking performance of its braking materials is basically not equipped. The domestically equipped benches include one from the China Academy of Railway Sciences with national qualification for testing; China Railway Longchang Railway Equipment Co., Ltd. except for one, all enterprises Normal quality control is only guaranteed by formula and process, and the right to install the product is determined by the 1:1 test bench test report. It is necessary to improve the quality indicators of brake shoes and brake pads, and solve the problems in brake materials. Thermal recession, thermal expansion, thermal cracking, pollution and quality problems, and the demand for rapid localization of brake shoes and brake pads for rail trains. Without testing methods, everything progresses very slowly.

Images