A manually operated three-station mechanism

Abstract

The invention discloses a manually manipulated three-position mechanism including a rack, an output shaft passing through a center hole of the rack and rotatably connected, and a self-locking tripping device, wherein three operation position an isolation contact, a dual division and a grounding contact are provided in turn on an upper end face of the rack, an annular groove is provided on a lower end face of the rack, a mounting hole and a limit hole are respectively provided radially on an outer wall of the annular groove and an inside annual protruding; a limit slot is provided along an axial direction through the limit hole on an outer wall of the annular protruding; a high voltage body switch is connected to a top end of the output shaft, and a conversion switch is connected to a lower end; a handle for rotating the output shaft is provided on a portion of the output shafting extending the rack, and three pin holes corresponding to three positions are respectively provided on a portion located inside the annual protruding; the self-locking tripping device includes a self-locking pin provided to insert into the mounting hole and the limit holing in turn, a position pin and an unlocking pin positioned respectively radially on the self-locking pin, a spring covered on the self-locking pin, and a locking shifting fork fixedly provided on a portion of the output shaft extending the annular protruding.

Description

technical field [0001] The invention relates to an operating mechanism of a high-voltage isolation and grounding switch, in particular to a manually operated three-position mechanism with automatic self-locking function. Background technique [0002] In high-voltage power transmission and transformation equipment, a combined electrical appliance consisting of a high-voltage circuit breaker, a current transformer, a high-voltage disconnector and a high-voltage grounding switch, usually requires two operating mechanisms when operating the high-voltage disconnector and high-voltage grounding switch. Operated separately, mechanical interlock is required between the high-voltage isolating switch and the high-voltage grounding switch. At the same time, in the combined electrical appliances with a voltage level of 35-110Kv, a manual mechanism is used to operate the high-voltage isolating switch and the high-voltage grounding switch. [0003] The existing manual operation mechanism ...

AI Technical Summary

Problems solved by technology

[0003] The existing manual operation mechanism can only perform the control function of 1-2 stations. For the operation requirements of isolation and closing operations, grounding and closing operations, and isolation and grounding operations, two mechanisms are required to cooperate to complete, not only occupying A lot of combined electrical space is required, the production cost is high, the production efficiency is low, and the interlock requirements cannot be met. At the same time, the operation is complicated. From the mechanism setting, it is very easy to cause misoperation and abnormal opening and closing of the switch, and the use effect is poor. Low safety and reliability

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