Position locking mechanism of three-position isolating switch

Abstract

The invention discloses a position locking mechanism of a three-position isolating switch. The position locking mechanism comprises an isolating switch main shaft and an operation panel fixed on an isolating switch frame, the isolating switch main shaft and a handle drive shaft are mounted in a nested manner and can move axially relative to each other, the handle drive shaft is equipped with a handle that can drive the handle drive shaft to rotate synchronously with the isolating switch main shaft, an inner side of the operation panel is provided with a locating pin, the isolating switch main shaft is fixedly equipped with a position-limiting sleeve located at an inner side of the operation panel, a front end face of the position-limiting sleeve is provided with a position-limiting groove, and a compression spring is mounted between a rear end face of the position-limiting sleeve and a shaft end of the isolating switch main shaft. After adopting the abovementioned structure, when switching-closing operation is needed, the handle is rotated and position limiting can be performed through the locating pin and the locating sleeve, a misoperation phenomenon that occurs due to different operating force in the process of switching-closing operation is completely eradicated, and the position locking mechanism of the three-position isolating switch is simple in structure and very convenient to operate and use, and the operating accuracy and the use reliability are greatly improved.

Description

[0001] technical field [0002] The invention relates to a component for a DC switchgear, in particular to a three-position isolating switch position locking mechanism. Background technique [0003] The three-position isolating switch is a switch mechanism with three positions of opening, closing and grounding. The existing three-position isolating switch generally includes a handle, which is connected with a rotating shaft, and a V is hinged on the rotating shaft. The V-shaped contact knife is driven by the handle. In the prior art, there is no reliable locking mechanism between the closing position to the opening position and the opening position to the grounding position of the three-position isolating switch. It is easy to misuse during the process, and the opening and closing operation cannot be performed reliably. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a three-position isolating switch positio...

AI Technical Summary

Problems solved by technology

[0003] The three-position isolating switch is a switch mechanism with three positions of opening, closing and grounding. The existing three-position isolating switch generally includes a handle, which is connected with a rotating shaft, and a V is hinged on the rotating shaft. The V-shaped contact knife is driven by the handle. In the prior art, there is no reliable locking mechanism between the closing position to the opening position and the opening position to the grounding position of the three-position isolating switch. It is easy to misoperate during the process, and the opening and closing operation cannot be performed reliably

Images