Method for detecting temperature change in disc based on coal mining machine brake

Abstract

The invention discloses a method for detecting temperature change in a disc based on a coal mining machine brake. A large amount of heat energy can be generated in the disc in the braking process of the brake, and the braking performance of the brake can be influenced by the heat energy accumulated in the disc; the highest temperature point in the disc generally appears at the middle axial edge position of a friction pair assembly, and the friction pair area reaching the maximum temperature is the main reason that the brake performance of the brake is reduced and the friction pair thermal fatigue of the brake occurs; and due to the structural limitation of the coal mining machine brake, the maximum temperature change area in the braking period cannot be directly detected and can only be indirectly obtained through other temperature measuring points. According to the detecting method, the temperature field of the disc in the friction pair is subjected to simulation research, the temperature change rule in the disc is found, the relation between the temperature change of the highest temperature area and the temperature of the measuring points (other temperature points) is established, and the measuring temperature of the highest temperature area can be accurately obtained.

Description

technical field [0001] The invention relates to the temperature change analysis of brake friction pairs and the temperature detection model in mechanical electronics, in particular to explore the axial temperature change law and temperature detection function design of the shearer brake disc. Background technique [0002] Industry is the second industry of our country and an important pillar of the national economy. As an important industry in the industry-coal mining has always been the basic industry of our country and occupies an important position and role in the development of the national economy. As an important tool for coal mining, the shearer is very important in coal mining. Its performance and quality are directly related to the safety and quality of coal mine production. The brake is an important safety braking device of the shearer. Its performance and braking response speed are directly related to the safety and braking efficiency of the shearer. The shearer ...

AI Technical Summary

Problems solved by technology

Its working method adopts spring braking and hydraulic release. This method is reliable, but the degree of automation is low. This kind of brake cannot be directly connected with the monitoring center on the shearer, so its working condition monitoring cannot be realized.

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