Opening and closing control device and control method of mine explosion-proof well lid

Abstract

The invention relates to an opening and closing control device and control method of a mine explosion-proof well lid. The opening and closing control device of the mine explosion-proof well lid comprises reels, wherein the reels are connected with upper ends of counterweight balance blocks through pull ropes and are driven by reeling motors, rope releasing trigger switches are arranged on assemblygrooves and are used for being triggered by trays at high positions to control the reeling motors to reversely rotate to release the ropes, rope collecting trigger switches are further arranged on the assembly grooves and are used for being triggered by the trays at low positions to control the reeling motors to positively rotate to collect the ropes, and the rope releasing trigger switches and the rope collecting trigger switches are arranged in an up-down way. By the opening and closing control device, the problems that a balancing heavy hammer of a well lid opening and closing control device in the prior art needs to be manually operated and accordingly the labor intensity is large and the well lid closing time is easily delayed after explosion are solved.

Description

technical field [0001] The invention relates to a mine explosion-proof manhole cover opening and closing control device and control method in the field of mine safety. Background technique [0002] Explosion-proof facilities must be installed at the top of the coal mine return air shaft. The usual anti-explosion measure is to install an explosion-proof manhole cover at the wellhead. Its function is that when a gas or coal dust explosion occurs underground, it will automatically open under the impact of high-pressure air waves to protect the environment. The main ventilator is protected from damage, and under normal conditions it is airtight to prevent short-circuiting of the air flow. [0003] Existing explosion-proof manhole covers such as the "mine explosion-proof manhole cover opening and closing device" disclosed in Chinese patent CN107905829A include well covers and assembly grooves positioned at both sides of the wellhead. In the assembly groove, both ends of the U-sh...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a mine explosion-proof manhole cover opening and closing control device to solve the problem that the manhole cover opening and closing control device in the prior art needs to manually operate the balance weight to lift and lower the manual labor intensity, and it is easy to cause the well cover to be closed after the explosion time delay problem

Images