Permanent magnet electric roller explosion suppression performance safety protection device, self-checking method thereof and explosion suppression type permanent magnet electric roller

Abstract

The invention relates to a permanent magnet electric roller explosion suppression performance safety protection device, a self-checking method thereof and an explosion suppression type permanent magnet electric roller. Explosion-proof joint faces are arranged between center plates of the permanent magnet electric roller and a roller body, a shaft and bearing inner side end covers. At least one setof displacement sensor is mounted at each explosion-proof joint surface through a special bracket; the signal output terminal of the displacement sensor is connected with an intelligent fault diagnosis system, the intelligent fault diagnosis system compares the measurement result of the sensor with the initial set range of the system immediately, and when the measurement result falls into the initial set range of the system, an alarm is given or the permanent magnet electric roller is controlled to stop. The initial value of the explosion-proof gap is measured when the roller does not rotateand is not stressed or is only stressed by small adhesive tape tension, the adhesive tape is tensioned step by step through the tensioning device, and if the change of the measured value of the explosion-proof gap is not zero, the safety protection device is determined to be normal. The explosion-proof gap is monitored in real time, safety protection measures are taken in time, explosion loss is avoided, and major potential safety hazards are eliminated.

Description

Technical field [0001] The invention relates to a monitoring and protection device for the explosion-proof gap of a permanent magnet electric drum and a permanent magnet electric drum that can realize the self-test and self-protection of the explosion-proof gap. Background technique [0002] In the past two years, the permanent magnet electric drum has been favored by coal mine users due to its simple structure, high transmission efficiency, and small size, and the number of production enterprises has grown rapidly. If the permanent magnet electric drum is used in a dangerous place with explosive gas such as underground coal mine, it needs to be made into an explosion-proof structure, and the explosion-proof gap is closely related to whether it can be explosion-proof. Explosion-proof standards stipulate that the maximum gap should be 0.3~0.8mm based on the type of joint surface of explosion-proof products and the minimum width of joint surface. At present, the detection related ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a permanent magnet electric drum explosion-proof performance safety protection device and its self-inspection method as well as an explosion-proof permanent magnet electric drum, which can monitor the dynamic change of the explosion-proof gap of the permanent magnet electric drum in real time. The setting range immediately sends an alarm or directly cuts off the power, which solves the problem of major safety hazards when the permanent magnet electric drum is used in a dangerous place with explosion-proof requirements

Images