Emergency power-off device for electrical automation equipment failure

Abstract

The invention discloses an emergency power-off device for electrical automation equipment failure. The emergency power-off device comprises a metal sheet, a first contact sheet, a second contact sheetand a metal plate. The metal sheet is fixed inside the device shell. A first connecting air pipe and a second connecting air pipe are distributed in an L-shaped structure, and a clamp ring is arranged outside the middle vertical part of the first and second connecting air pipes. The clamp ring is located inside the device shell, and the clamp ring is connected with one end of a fixing rod. A clamping plate is arranged on the opposite surface of the clamp ring. A sleeve is rotatably connected at the center of a transverse plate. The surface of the sleeve is hinged with a driving rod, and the sleeve is connected with a knob through a rotating rod. According to the emergency power-off device for the electrical automation equipment failure, the upward and downward movement of the metal platecan be stably limited fixed and operation is quite convenient. Meanwhile, the safety performance of the device operation can be improved by locking the connecting air pipes to close the air passage while the contact piece is sealed and protected by the air bag.

Description

technical field [0001] The invention relates to the technical field related to electrical equipment, in particular to an emergency power-off device for failure of electrical automation equipment. Background technique [0002] The emergency power-off device refers to the equipment that uses electric or manual methods to cut off the power of the energized line. When the electrical equipment is in operation, the emergency power-off device is an essential device. When the equipment fails, in order to ensure the power-off To ensure the reliability of power operation, people generally use manually operated power-off devices for power-off operations, but the existing power-off devices have the following disadvantages in actual use: [0003] 1. The operation method of the existing power-off switch is to press the button down to disconnect the two sets of contacts that are powered on, so as to achieve the purpose of power-off. After pressing down, a corresponding limit device is gene...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of emergency power-off device for electrical automation equipment failure, to solve the existing power-off switch proposed in the above-mentioned background technology, the operation method is to press the button down, so that the two groups of contact pieces that are powered are disconnected, thereby To achieve the purpose of power-off, after pressing down, a corresponding limit device is generally set to prevent the shrapnel from rebounding automatically. Because the internal parts of the device are easy to age, it is easy to cause the limit device to fail after long-term use, which is easy to cause certain damage. Dangerous; because the device shell structure of the device cannot be completely sealed, and the contact piece is used for a long time, it is easy to oxidize after contact with air, and the surface rust and breakage will affect the conductivity of the contact piece, which is likely to cause abnormal open circuit phenomenon the occurrence of problems

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