A two-axis springless operating mechanism for a three-position isolating switch

Abstract

The invention discloses a three-station disconnecting switch double-shaft spring-free operating mechanism. The mechanism includes a bracket, a main shaft, a grounding switch operation shaft and an disconnecting switch operation shaft, wherein the main shaft, the grounding switch operation shaft and the disconnecting switch operation shaft are arranged on the bracket. The grounding switch operationshaft and the disconnecting switch operation shaft are arranged on the two sides of the main shaft respectively, a main shaft operation disk is arranged on the main shaft, a grounding switch operation disk is arranged on the grounding switch operation shaft, and the disconnecting switch operation shaft is provided with an disconnecting switch operation disk; the main shaft operation disk is provided with a first transmission part and a second transmission part in the circumferential direction, a third transmission element cooperated with the first transmission part is arranged on the grounding switch operation disk, and a fourth transmission element cooperated with the second transmission part is arranged on the disconnecting switch operation disk. The mechanism has the advantages that the structure is simple and reliable, the cost is low, the mechanism has chain protection characteristics, no additional protective devices are needed, and electric remote operation is easily achieved.

Description

technical field [0001] The invention relates to an isolating switch, in particular to a two-axis springless operating mechanism of a three-position isolating switch. Background technique [0002] The isolating switch is used in the primary power distribution cabinet of the high-voltage switch, and is used for connecting and isolating the high-voltage incoming busbar and grounding the feeder. It needs to have the following three functional positions: the isolating switch is turned on, that is, closing; the feeding device is connected to the bus to receive power; the isolating switch is isolated, that is, opening: the feeding device is disconnected from the bus; The ground terminal is closed, so that the feeder is grounded reliably when the feeder is not loaded, ensuring the safety of the load side of the feeder and the personal safety of maintenance personnel. In order to realize the closing, opening and grounding of the isolating switch, it is necessary to configure an elec...

AI Technical Summary

Problems solved by technology

At the same time, some biaxial three-position isolating switch operating mechanisms operate up and down through the handle, which is not conducive to the realization of electric remote control operation.

In addition, the three-position isolating switch operating mechanism has a set of "five-proof mechanism" attached to the front of the operating shaft to ensure safe stop and power transmission. The cumbersome five-proof interlocking mechanism makes the manufacturing process of the equipment very complicated. At the same time, the mechanism There are also unstable factors in the operation of the isolating switch; the existing biaxial three-position isolating switch operating mechanism is limited by the structure, and the opening and closing coil spring and the grounding switch operating spring are configured. Most of the crank arms are plastic parts. When the spring releases its stored energy, it will produce a large impact, which will easily cause deformation or damage of such plastic parts, affect the service life of the equipment, and even cause the isolating switch to lose its function when closing and opening.

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