Mechanical digital disc type roof separation sensor

Abstract

A mechanical digital disc type roof separation sensor comprises a main frame, a rotation driving wheel, a digital display module and a sensing module, the rotation driving wheel, the digital display module and the sensing module are arranged on the main frame, the digital display module comprises three digital code discs which are sequentially connected in a transmission mode according to a preset transmission ratio, and the rotation driving wheel can rotate on the first digital code disc to drive other digital code discs to rotate at a preset transmission ratio in a decelerated mode; the roof separation state is displayed in a digital form, so that the reading is more accurate; the sensing module comprises a screw rod, a nut and a cantilever beam, the screw rod is rotationally connected with the main frame and is in transmission connection with the rotary driving wheel, the nut without axial rotation is arranged on the screw rod, one end of the cantilever beam is connected with the main frame, the other end of the cantilever beam abuts against the outer end face of the nut, and a fiber bragg grating is arranged on the cantilever beam. And the displacement of the nut drives the cantilever beam to generate bending deformation, and the deformation information is transmitted to a remote host through the fiber bragg grating, so that the real-time remote monitoring of the separation state of the roof is realized, and the safety of underground work is further ensured.

Description

technical field [0001] The invention relates to the technical field of coal mine safety, in particular to a mechanical digital disc type roof separation sensor. Background technique [0002] In the field of coal mining, with the increase of mining time, the environment in the mine roadway will become more and more complex, and accidents such as coal landslides occur from time to time. In this complex environment, in order to ensure the needs of safe production, The roof separation sensor is often used to monitor the displacement state of the roof of the mine roadway in real time. [0003] In response to this problem, the inventors have disclosed a high-visibility optical fiber roof separation sensor for mines in the utility model patent with the patent number of CN202021007690.0. The sensor uses a steel wire rope to drive the roller mechanism. And after all levels of transmission, the deformation results are fed back to the dial. There is also a mine-used long-range fiber g...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the above-mentioned existing roof separation sensor is a pointer plus a dial type, so that there is a large deviation in the reading, causing a large safety hazard in the mine roadway, the present invention provides a mechanical digital disc type roof separation sensor

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