Labor-saving driving switch for switching on and off of 40.5KV circuit breaker switch

Abstract

The invention discloses a labor-saving driving switch for switching on and off of a 40.5KV circuit breaker switch, which comprises a labor-saving driving structure for switching on and off of a high-voltage switch, and further comprises a base and a cam, wherein the base is internally provided with an inner hexagonal flange, and a reinforcing column is vertically connected in the base; the cam sleeves the outer wall of a hexagonal insulating rotating shaft and rotates along with the hexagonal insulating rotating shaft; inner holes of the swinging ends of two supporting arms, inner holes of rollers and inner holes of the upper ends of connecting rods are hinged into a whole through connecting pins; and the fixed end of the supporting arm is hinged to the supporting rod. According to the labor-saving driving switch for switching on and off the circuit breaker switch, the required precision of an operation angle is reduced through cam driving, the switch can be easily driven to be switched on under the condition of angle deviation within 19 degrees, parts which are not involved in the device are the same as those in the prior art or can be realized by adopting the prior art, the operation torque transmission efficiency is improved, a driving force effect of 1: 41 can be realized to the maximum extent, an over-pressure phenomenon on a vacuum bubble contact pressure spring is not caused by input of an operation angle greater than 90 degrees, and meanwhile, the precision requirement of an input angle of the hexagonal insulating rotating shaft is reduced, and the angle deviation within 90-109 degrees does not result in change of the compression amount of a contact over-travel spring.

Description

technical field [0001] The invention relates to the technical field of electric switchgear, in particular to a 4.5kV circuit breaker switch closing and opening labor-saving driving switch. Background technique [0002] 40.5KV high-voltage switchgear is widely used in large-scale wind power generation and photovoltaic power plants. At present, circuit breaker switches of similar products on the market generally have complex structures, many parts, and poor stability. [0003] In the prior art, since the contact pressure required by the 40.5KV vacuum bubble is all above 3KN, the three items add up to a force above 9KN. [0004] This prior art scheme also has the following problems in use: [0005] 1. Since the angle of rotation of the operating mechanism must be greater than the angle required by the switch to allow the operating mechanism to reliably close and lock, when the operating mechanism rotates more, it will compress the pressure spring of the vacuum bubble contact a...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a 4.5kV circuit breaker switch closing and opening labor-saving drive switch, to solve the above-mentioned background technology because the angle of rotation of the operating mechanism must be greater than the angle required by the switch to allow operation. The problem of reliable closing and locking position of the mechanism

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