Brake friction plate contact area measuring instrument for mining equipment and manufacturing and measuring method

Abstract

The invention relates to a brake friction plate contact area measuring instrument for mining equipment and a manufacturing and measuring method, and belongs to the field of detection. According to the technical scheme, the device comprises a measuring piece, the outermost layers of the two sides are poly-p-phenylene terephthamide fibers, the inner surfaces of the poly-p-phenylene terephthamide fibers are covered with polyamide-imide films, and the edges of the poly-p-phenylene terephthamide fibers and the polyamide-imide films on the two side faces are connected with a polyamide-imide frame in a sealed mode; the measuring column is of a hollow structure and is provided with a sealing piston, one end of the hollow structure is communicated with the liquid guide hole in the polyamide-imide frame in the measuring sheet, and a carbon film resistor strip is laid on the inner wall of the hollow structure. The measuring host comprises a high-precision AD conversion module connected with the carbon film resistor strip, a single-chip microcomputer and a display screen. Compared with the traditional measurement technology, the method has the advantages that the precision is high, the full-automatic measurement is convenient to use, the disposable measurement sheet can be stably archived and stored for a long time after being used, and physical evidence and affirmation basis are provided for accident archive backtracking and responsibility division.

Description

technical field [0001] The invention relates to a measuring instrument for the contact area of ​​a brake friction plate used in mine equipment and a manufacturing and measuring method, belonging to the detection field. Background technique [0002] At present, most explosion-proof brakes for fixed equipment in mines use plate-type friction plates for braking. Most mines in China have relatively harsh environments, and it is very common that the edges of friction plates are broken when impacted. In order to ensure the braking effect, regular friction Check the contact area of ​​the chip. [0003] Due to the special braking conditions of fixed equipment in mines, there are few suitable detection methods. At present, the detection and inspection institutions in the industry mostly use copy paper. Manual measurement is performed after starting the friction plate extrusion, and this measurement error is extremely large. In recent years, grid-shaped copy paper has been gradually ...

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