Three-position solid insulation fully sealed switch grounding mechanism

Abstract

The invention relates to a three-station solid insulating fully-sealed switch grounding mechanism, belonging to grounding devices of electric switches. The three-station solid insulating fully-sealed switch grounding mechanism comprises three grounding post devices, each grounding post device comprises an insulation body, the insulation body is provided with an open slot containing insulating oil, a contact is fixedly sealed at the bottom of the insulation body, a connecting slot is arranged at the upper end of the contact, the insulation body is connected with a flange assembly body, and a grounding rod is inserted in the flange assembly body. The upper ends of the three grounding rods pass through a grounding linked bracket and then are screwed with a ground soft copper belt, the grounding linked bracket is provided with a slot hole, a crank connecting shaft is arranged in the slot hole in an insertion manner, the front end of the crank connecting shaft is vertically connected with one end of a spring crank, the other end of the spring crank is vertically connected with the back end of a grounding shaft, a spring crank front side plate is hinged with a first support through a pin shaft, the two ends of a grounding spring are fixed on the first support and a second support, and the second support is movably connected with a grounding spring support frame arranged on a mechanism support plate. The three-station solid insulating fully-sealed switch grounding mechanism disclosed by the invention has the advantages of simple and compact structure, small volume and capability of reducing the manufacturing cost of an ring main unit, and is simple in operation and safe in use.

Description

technical field [0001] The invention relates to a grounding device for an electric switch, in particular to a grounding mechanism for a three-position solid-insulated fully-sealed switch. Background technique [0002] In the prior art, since the isolating mechanism and the grounding mechanism in the two-position solid-insulated fully-sealed switch realize isolation closing and grounding closing through one operating mechanism, it has one isolation opening less than the existing three-position switch During operation, the isolation mechanism and the grounding mechanism operate together. Since there is only one operation hole to realize the isolation closing function and the grounding closing function, it is easy to cause misoperation of the operating mechanism during use and cause electrical accidents. However, the existing The grounding mechanism of the three-position solid insulated fully sealed switch is composed of a grounding transmission mechanism set inside the transmi...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, since the isolating mechanism and the grounding mechanism in the two-position solid-insulated fully-sealed switch realize isolation closing and grounding closing through one operating mechanism, it has one isolation opening less than the existing three-position switch During operation, the isolation mechanism and the grounding mechanism operate together. Since there is only one operation hole to realize the isolation closing function and the grounding closing function, it is easy to cause misoperation of the operating mechanism during use and cause electrical accidents. However, the existing The grounding mechanism of the three-position solid insulated fully sealed switch is composed of a grounding transmission mechanism set inside the transmission box and a grounding operating mechanism set outside the transmission box, which are combined to complete the closing and opening functions, and the grounding transmission mechanism consists of The grounding column made of copper conductor and the peripheral switch knife are composed of a large overall volume, which increases the cost of the entire ring network cabinet, and the structure and operation are complicated.

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