Drum coal mining machine rocker arm comprehensive state parameter online monitoring device

Abstract

The invention relates to a drum coal mining machine rocker arm comprehensive state parameter online monitoring device, comprising an intrinsic safety type rocker arm vibration monitoring module, an intrinsic safety type oil liquid health monitoring module and an intrinsic safety type pre-diagnosis center module. The two modules communicate with the pre-diagnosis center module in a wired communication mode and / or a wireless communication mode and transmit monitoring data information to the pre-diagnosis center module. The oil liquid health monitoring module comprises a first sensor signal processing circuit, an immersive electromagnetic abrasive particle sensor, an immersive dielectric sensor and an immersive temperature sensor. Sensing elements of the electromagnetic abrasive particle sensor, the immersive dielectric sensor and the immersive temperature sensor are directly immersed into lubricating oil liquid in a rocker arm drive system shell. Signal output ends of the electromagneticabrasive particle sensor, the immersive dielectric sensor and the immersive temperature sensor are connected with a sensing signal input end of the first sensor signal processing circuit. According to the drum coal mining machine rocker arm comprehensive state parameter online monitoring device, health condition of a rocker arm can be automatically detected and a fault can be positioned, so reliability of the rocker arm and an operating ratio of a coal mining machine are improved.

Description

technical field [0001] The invention relates to a set of fault diagnosis device for a specific fault of a rocker arm transmission system of a coal mining machine, whether the fault is predicted to exist or not, and the fault location is judged. Background technique [0002] Shearer is the key equipment for the production of fully-mechanized coal mining face, and an important technical equipment for coal mining enterprises to achieve efficient and intensive coal mining, reduce major accidents in coal mines and improve working conditions at the working face. According to statistics, in a modern 100 million-ton mining area in recent years, the rocker arm failure of the cutting part of the shearer accounted for an average of 34.2% of the failure rate of the shearer. The failure of the rocker arm leads to a low start-up rate of the shearer, which is one of the important factors affecting the efficiency of coal mining operations. [0003] There are many reasons for the fault of t...

AI Technical Summary

Problems solved by technology

The failure of the rocker arm leads to a low start-up rate of the shearer, which is one of the important factors affecting the efficiency of coal mining operations

[0003] There are many reasons for the fault of the rocker arm of the coal shearer. Sometimes a fault is caused by multiple reasons. For example, it may include both mechanical reasons and lubricating oil quality. Simply eliminating one reason cannot completely solve the fault, or The same fault may occur again soon after the fault has been resolved by eliminating only one aspect of the cause

Sometimes a basic reason can cause many different manifestations, and it is difficult to determine the cause through only one manifestation. location and cause for timely intervention, a system capable of supporting online monitoring of multiple parameters is required

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