Coal cutter cutting resistance sensing method based on magnetorheological elastomer and sensor

A technology of magnetorheological elastomers, sensing methods, applied in the direction of volume/mass flow due to mechanical effects

Inactive Publication Date: 2014-01-15
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a shearer cutting resistance sensing method and sensor based on magnetorheological elastomers, to solve The accuracy of the measurement of the cutting resistance suffered by coal cutting and the problem of adjusting the stiffness of the magneto-rheological elastomer
Thereby improving the working efficiency and service life of the shearer

Method used

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  • Coal cutter cutting resistance sensing method based on magnetorheological elastomer and sensor
  • Coal cutter cutting resistance sensing method based on magnetorheological elastomer and sensor

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Embodiment Construction

[0019] Sensing method provided by the invention comprises the following steps:

[0020] In the first step, the shearer pick is fixed on the shearer drum through a cutting resistance sensor based on magneto-rheological elastomer. The initial threshold of the cutting resistance is set to be smaller than the limit threshold of the cutting resistance determined according to the rated output power of the shearer. The cutting resistance received by the pick when cutting coal is transmitted to the magnetorheological elastomer through the pick, and the distribution of the internal magnetic particles of the deformed magnetorheological elastomer changes, so that the electrical parameters of the shearer's cutting resistance sensor changes, the electrical parameters are measured by the detection circuit to obtain the corresponding relationship between the change of the cutting resistance and the change of the electrical parameters, and the cutting resistance suffered by the cuttin...

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Abstract

Provided are a coal cutter cutting resistance sensing method based on a magnetorheological elastomer and a sensor. The problem of measurement accuracy of cutting resistance borne by cutting pick in coal cutting when a coal cutter operates and the problem of adjustment of magnetorheological elastomer rigidity are solved. The method is conducted by means of the characteristic that the magnetorheological elastomer deforms due to stress, corresponding electricity parameters are measured to obtain the magnitude of the stressed force, meanwhile the characteristic of the magnetorheological elastomer rigidity can be changed through an applied magnetic field, and the stress range of the magnetorheological elastomer is expanded. Real-time and accurate measurement of the cutting resistance is achieved, then output power of the coal cutter can be adjusted in real time according to changes of the cutting resistance, meanwhile the stress range of the cutting resistance sensor is expanded through the method that the magnetorheological elastomer rigidity is adjusted through the applied magnetic field, and the cutting resistance sensor is protected. Therefore, work efficiency of the coal cutter is improved, and the service life of the coal cutter is prolonged.

Description

[0001] FIELD OF THE INVENTION The present invention relates to the field of shearer cutting resistance sensor design. Specifically, it is a shearer cutting resistance sensor based on magnetorheological elastomer. technical background [0002] With the establishment of the market economy system, coal mining enterprises pay more and more attention to production efficiency and economic benefits. The actual working efficiency of the shearer and the quality of its working effect are the results of the combined effects of many factors, such as the structure of the shearer drum, the material, shape, size and arrangement and installation angle of the pick, the cutting depth , the traction speed of the motor, the physical and mechanical properties of the coal seam, etc. The basic basis for determining the above factors is to master the characteristics of the cutting force, measure the cutting force accurately, and obtain a large amount of information on the interaction of various fac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/12
Inventor 汤春瑞赵灿刘丹丹
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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