Alarm device for preventing mistaken touch between operation crane and high-voltage live-line equipment

Abstract

The invention provides an alarm device for preventing an operation crane from accidentally touching high-voltage live equipment. The alarm device comprises a bottom plate, an extension plate, a trigger conductive box and an alarm box, the bottom plate is fixedly mounted at the outer top end of the operation room; one end of the extension plate is movably connected with the bottom plate and can be fixed on a corresponding limiting position in a plurality of preset limiting positions of the bottom plate through a limiting structure, and the other end of the extension plate is fixedly provided with a trigger conductive box and can do telescopic motion towards the direction of the suspension arm; the trigger conductive box is driven by the extension plate to the position over the suspension arm, a height meeting the preset condition is reserved between the trigger conductive box and the suspension arm, and if the suspension arm ascends to exceed the height, the trigger conductive box is triggered, and alarming of the alarm box is achieved. And if the lifting height of the suspension arm is lower than the height, the trigger conductive box is not triggered, and the alarm box does not give an alarm. The device is simple in structure, convenient to operate, time-saving and labor-saving, and capable of giving an alarm when the distance between the operation crane and the high-voltage live equipment is insufficient.

Description

technical field [0001] The invention relates to the technical field of electric power safety, in particular to an alarm device for preventing accidental collision between a working crane and high-voltage live equipment. Background technique [0002] The "Electricity Safety Work Regulations" stipulates in the technical measures to ensure safety that there should be a certain safe distance between conductive objects (such as staff, etc.) and live high-voltage equipment during operation. For example, 500kV is not less than 8.5 meters, 220kV is not less than 6 meters, 110kV is not less than 5 meters, 35-66kV is not less than 4 meters, 1-10kV is not less than 3 meters, and below 1kV is not less than 1.5 meters, etc. [0003] Despite the above-mentioned safety technical measures during the operation, due to the complexity and chaos of the construction site and the imperfect construction plan, the risk is difficult to control. In addition, there are loopholes in the management sys...

AI Technical Summary

Problems solved by technology

[0004] However, during on-site operations, accidental collisions between the work crane and the high-voltage live equipment often occur due to insufficient distance and cause power grid accidents.

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