Coal mine shaft signal system and emergency signal device

Abstract

The invention discloses a vertical shaft signal system of a coal mine. The vertical shaft signal system comprises a normal signal device and an emergency signal device. The emergency signal device comprises a car room key switch, a wellhead key switch, an intermediate relay K1, an intermediate relay K2, a button SB1, a button SB2 and a button SB3; the car room key switch and the wellhead key switch are connected in series, then one end of the connected switches is connected to a power supply, and the other end of the connected switches is connected to the button SB1; the button SB1 is a stop button; and the other end of the SB1 is connected to two circuits, wherein the first control branch circuit comprises a normally-opening point of the SB2, a normally-closing point of the SB3, a coil of the relay K1 and a normally-closing contact point of the relay K2, and the second control branch circuit comprises a normally-closing point of the SB2, a normally-opening point of the SB3, a coil of the relay K2 and a normally-closing contact point of the relay K1. The emergency signal device is started when power losing occurs in the downhole, a cage upward lifting signal is transmitted through the first control branch circuit, and a cage downward lowering signal is transmitted through the second control branch circuit. The invention further discloses the emergency signal device. The vertical shaft signal system and the emergency signal device have the following advantages that a standby signal device is additionally arranged at an upper wellhead, the cost is very low, and the great safety effect can be achieved.

Description

technical field [0001] The invention relates to a signal control device for coal mines, more particularly to a shaft signal system. Background technique [0002] At present, when the underground power supply of the shaft signal system is not normal, the wellhead signal console cannot send out signals, which affects the operation of the cage, that is, the cage cannot be lifted or lowered safely, and the maintenance personnel cannot take the cage to go down the well for maintenance, which seriously affects the normal operation. Production. If there is a power outage in the mine or a major safety accident leads to a power outage, the personnel cannot rise up from the mine quickly, which seriously threatens the life safety of the workers. If the signal is selected to run in the simple mode in an emergency, the speed is only 0.5m / s, and the monitoring PLC protection is thrown off in the simple mode, which is not safe enough. Contents of the invention [0003] The technical pr...

AI Technical Summary

Problems solved by technology

[0002] At present, when the power supply of the shaft signal system is not normal, the downhole signal console cannot send out signals, which affects the operation of the cage, that is, the cage cannot be lifted or lowered safely, and the maintenance personnel cannot take the cage to go down the well for maintenance, which seriously affects the normal operation Production

If there is a power outage in the mine or a major safety accident causes a power outage, the personnel cannot rise up from the mine quickly, which will seriously threaten the lives of workers.

If the signal is selected to run in the simple mode in an emergency, the speed is only 0.5m / s, and the monitoring PLC protection is thrown off in the simple mode, which is not safe enough

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