Power-off device and method outside explosion-proof power supply box in underground mine

Abstract

The invention discloses a down-hole explosion-proof power box outer power-off device and method, and belongs to the technical field of down-hole explosion-proof power box outer power-off. The down-hole explosion-proof power box outer outage device comprises a box and a box cover, wherein the box cover is provided with a boss and a rotatable cap mechanism on the boss; the cap mechanism is provided with a locking plug; a rotary shaft of the cap mechanism extends into the box and is connected with a breaker inside the box; the boss is provided with a plug slide groove; a power-off locking hole and a power-on locking hole are formed in the two ends of the plug slide groove respectively. When power is off, the locking plug is pulled out of the power-on locking hole, then the locking plug is plugged into the power-off locking hole by rotating the cap mechanism, the rotary shaft of the cap mechanism drives the breaker inside the box to act, an outer power source is switched off, and at the same time, a bolt of the box is exposed. The down-hole explosion-proof power box outer power-off device and method can effectively prevent illegal power-on cover opening events.

Description

technical field [0001] The invention relates to an out-of-box power-off device and method, in particular to an out-of-box power-off device and method for an underground explosion-proof power supply before opening the cover. Background technique [0002] Downhole power supply is mainly used to provide various types of DC or AC power for electrical equipment such as various types of security monitoring sensors, cameras, communication access equipment, relay equipment, and electromagnetic starters for drive control. Working in a flammable and explosive environment, the "Coal Mine Safety Regulations" clearly requires that when installing, debugging and maintaining the power supply underground, the power supply must be cut off before maintenance, and live work is strictly prohibited. However, due to the unreasonable design of the protection device in the explosion-proof design of the power supply equipment and the failure of the operators to operate according to the regulations, ...

AI Technical Summary

Problems solved by technology

However, due to the unreasonable design of the protection device in the explosion-proof design of the power supply equipment, the operators did not operate according to the regulations, etc., the phenomenon of overhauling the power supply with live electricity in violation of regulations often occurs, which brings serious safety hazards

[0003] In order to solve such problems, the technology provided by the Chinese patent: "Mine Explosion-proof Power Supply Opening and Power-off Interlocking Device, CN202796546U" realizes the power-off function before opening the cover, but its rotating disc is at the same level as the box cover. When used for a long time, moisture and corrosive gases will corrode the rotating mechanism safely, which brings great difficulties to the maintenance of the power supply; Chinese patent: "A kind of power-off device for opening the cover in advance, CN201226310Y", the solution provided is Controlling the bolts of the power box avoids the problem of illegal opening of the cover by the operator, but the signal of the sensing part still needs an external power supply, and the action of opening the cover and power-off cannot be directly transmitted to the inside of the power box, so there is still a problem Certain security risks

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