4.5 kV circuit breaker switch closing and opening labor-saving drive switch

Abstract

The invention discloses a 4.5kV circuit breaker switch closing and opening labor-saving driving switch, which includes a high-voltage switch closing and opening labor-saving driving structure, and also includes: a base with an inner hexagonal flange installed inside, and the inside of the base is vertically connected with reinforcements. Column; cam, set on the outer wall of the hexagonal insulated shaft, and rotate simultaneously with the hexagonal insulated shaft; the inner holes of the swing end, the inner hole of the roller and the inner hole of the upper end of the connecting rod of the two support arms are hinged into one body through the connecting pin; the fixed end of the support arm is hinged on the support pole. The circuit breaker switch closes and opens the labor-saving drive switch, and the required accuracy of the operating angle is reduced through the cam drive, and the angle deviation within 19° can easily drive the switch to close, and the parts not involved in the device are the same as the prior art or can be used Realized by adopting the existing technology, the present invention improves the transmission efficiency of the operating torque, and can realize the maximum driving force effect of 1:41, and the input of the operating angle greater than 90 degrees will not form an overpressure phenomenon on the pressure spring of the vacuum bubble contact, At the same time, the accuracy requirement for the input angle of the hexagonal insulating shaft is reduced, and the angle deviation within 90 degrees to 109 degrees will not cause the effect of changing the compression amount of the contact overtravel 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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