Mine scraper conveyor protection circuit

A technology for scraper conveyors and protection circuits, which is applied in the direction of conveyor objects, conveyor control devices, transportation and packaging, etc., can solve problems such as inability to protect, and achieve the effect of improving the safe operation coefficient

Active Publication Date: 2016-06-08
DATONG COAL MINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SCD broken chain protector has great limitations, and it cannot protect the scraper conveyor when there are faults such as floating chain, chain dropping, and tooth jumping.

Method used

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  • Mine scraper conveyor protection circuit
  • Mine scraper conveyor protection circuit

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Experimental program
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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing:

[0015] Such as figure 2 As shown, a mining scraper conveyor protection circuit includes a reset switch Reset, a first proximity switch K1, a second proximity switch K2, a first intermediate relay, a second intermediate relay, a first time relay and a second time relay ; Wherein, the first proximity switch K1, the second proximity switch K2 and the coil KA1 of the first intermediate relay are connected in series to form the first branch, one end of the first branch is connected with the return signal Return of the scraper conveyor contactor, and the other end is connected with The neutral line N is connected; the normally open contact KA1' of the first intermediate relay and the coil KT1 of the first time relay are connected in series to form a second branch, one end of the second branch is connected to the return signal Return of the scraper conveyor contactor, and the oth...

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PUM

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Abstract

The invention is a protection circuit for a mining scraper conveyor, which solves the problem that the traditional SCD chain break protector cannot protect the scraper conveyor when faults such as chain drift, chain dropping, and tooth jumping occur. The protection circuit of the present invention is composed of a reset switch Reset, a first proximity switch K1, a second proximity switch K2, a first intermediate relay, a second intermediate relay, a first time relay and a second time relay, completely replacing the traditional SCD chain disconnection Protector, and improved the protection of broken chain, dropped chain, jumping teeth, drifting chain and other protections of mining scraper conveyor, and improved the safe operation coefficient of scraper conveyor.

Description

technical field [0001] The invention relates to the technical field of coal mine scraper conveyor equipment, in particular to a protection circuit of a mine scraper conveyor. Background technique [0002] The traditional mining scraper conveyor SCD broken chain protector is installed on the driven shaft of the scraper conveyor. When the scraper conveyor is running normally, the driven shaft rotates with the driving shaft. When the broken chain fault occurs, The speed of the driven shaft drops significantly or even reaches zero. The chain break protector detects the speed of the driven shaft. When the speed of the driven shaft is lower than the set value (80% of the normal speed of the driven shaft), the chain break protector operates and outputs A switch signal controls the driving motor to stop running, and at the same time sends out an audible and visual alarm to protect the equipment and prompt the operator to deal with the fault. However, the SCD broken chain protector ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G43/00
Inventor 李建功王志强王东波苏正友
Owner DATONG COAL MINE GRP
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