Operating mechanism and operating method of three-station mutual prevention and interlocking structure

Abstract

The invention relates to an operating mechanism and an operating method for three-position mutual protection interlocking structure. The operating mechanism comprises mounting plates, a switching-on crank arm and a grounding crank arm, a switching-on shifting pin penetrating through the mounting plates is correspondingly arranged on the side, close to the front faces of the mounting plates, of the switching-on crank arm, a grounding shifting pin penetrating through the mounting plates is correspondingly arranged on the side, close to the front faces of the mounting plates, of the grounding crank arm, the corresponding mounting plates are provided with a switching-on shifting pin arc-shaped groove and a grounding shifting pin arc-shaped groove, the back sides of the mounting plates are movably connected to a rotating curved plate through a main shaft, the plate surface of the curved plate is provided with a double-section arc groove, a notch and a curved surface, the double-section arc groove intersects with the switching-on shifting pin arc-shaped groove during rotation, and the notch and the curved surface intersect with the grounding shifting pin arc-shaped groove. Through the linkage between the switching-on shifting pin and the switching-on shifting pin arc-shaped groove and among the grounding shifting pin and the notch and the curved surface, one of the switching-on shifting pin and the grounding shifting pin is locked when the curved plate rotates in position, and interlocking is achieved. The operating mechanism is low in manufacturing and machining cost, small in size, convenient to assemble and maintain, long in service life and suitable for serving as an operating mechanism of a high-voltage switch.

Description

technical field [0001] The invention relates to a high-voltage switch operating mechanism, in particular to an operating mechanism with a three-station mutual prevention and interlocking structure and an operating method thereof. Background technique [0002] The high-voltage switch operating mechanism is mainly used to control the three stations of closing, opening and grounding of the high-voltage switch. The so-called interlock means that when the operating mechanism is in the closing position, the grounding operation cannot be performed; on the contrary, when the operating mechanism is in the grounding position, the closing operation cannot be performed. In this way, the safety of the operating mechanism of the high-voltage switch is ensured, and safety accidents caused by misoperations such as secondary closing are prevented. Although many three-station interlocking mechanisms have been disclosed at home and abroad, and their functions are relatively complete, they are...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide the field with an operating mechanism of a three-station mutual prevention and interlocking structure and its operating method, so that it can solve the problems of complex structures, high manufacturing and maintenance costs of existing similar mechanisms. , technical problems such as inconvenient assembly and short service life

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