Protector of mine hoist

Abstract

The invention relates to a protector of a mine hoist, comprising a microwave material flow device, a proximity switch and a programmable controller. The microwave material flow device is used for testing the time of unloading material flow by a swinging bucket and comprises a microwave emitter and a microwave receiver which are respectively arranged on the bin walls of the two sides of a hoist unloading surge bin, and the output end of the microwave receiver is connected with the programmable controller; the proximity switch is used for testing the operating position of the swinging bucket of the hoist and outputting a trigger signal, and the output end of the proximity switch is connected with the programmable controller; and the programmable controller is used for testing the current signal of the hoist according to the trigger signal and analytically comparing the current signal, the time of the unloading material flow with corresponding set value so as to output corresponding control signal. The device can effectively prevent a main well hoist from having accident of repeat loading, improve the operation reliability and the productivity effect of the main well hoist, and reduce the labor intensity of workers.

Description

technical field [0001] The invention relates to the field of hoists, in particular to a mine hoist protection device. Background technique [0002] The main shaft hoist is an important transportation equipment for coal mine production. It lifts and transports the coal produced underground in the coal mine to the mine ground. Its safe and reliable operation directly affects the safe and normal production of the coal mine. Once the main shaft hoist fails, the mine will be destroyed. It is in a state of suspension of production. The main shaft hoist has a pair of skips. During normal operation, one skip is loaded and lifted quantitatively, and the other skip is lowered to the underground loading point for loading and then lifted after the other skip is completely unloaded. [0003] During operation, the hoist in the main shaft often causes incomplete unloading of the skip due to the high water content of the lifted coal, freezing in cold weather, or the incomplete opening of t...

AI Technical Summary

Problems solved by technology

[0003] During operation, the hoist in the main shaft often causes incomplete unloading of the skip due to the high water content of the lifted coal, freezing in cold weather, or the incomplete opening of the skip unloading gate. Continuing to run until loading underground will cause repeated loading accidents. Once this accident occurs, it will affect production in the slightest, and cause major safety accidents in severe cases, and it is very difficult and unsafe to deal with the accident.

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