A switch device and its transmission structure

Abstract

The invention relates to a switch device and a transmission structure thereof. The switch device comprises an arc extinguishing chamber, an operating mechanism and a transmission structure disposed between the arc extinguishing chamber and the operating mechanism, the arc extinguishing chamber is internally provided with a moving contact, the transmission structure comprises a drive rod having oneend passing through the arc extinguishing chamber to connect with the moving contact to drive closing and opening of the moving contact, the drive rod is hinged with a spacing rod and a power input port configured to drive motion of the drive rod through the same hinge structure, the power input rod has a rotation power input end being in transmission connection with the operating mechanism, theother one end of the spacing rod is hinged on the fixed pedestal, and the drive rod achieves the direct moving output itself by employing at least one set of the three sets between the spacing rod andthe fixed pedestal, between the drive rod and the arc extinguishing chamber and between the drive rod and the spacing rod; and the transmission mechanism is a transmission mechanism in the switch device. The above technical solution solves the problem that the reliability of the switch device is relatively low and the power required for the opening and closing of the operating mechanism is high in the prior art.

Description

technical field [0001] The invention relates to the technical field of medium-voltage switchgear, in particular to a switchgear and its transmission structure. Background technique [0002] The vacuum switch structure used in the technical field of medium-voltage switchgear generally consists of a moving contact and a static contact, and the opening and closing of the switch is realized by driving the moving contact to move by the operating mechanism. The moving track of the moving contact of the vacuum switch is a straight line and short stroke, while most of the operating mechanisms used to drive the moving contact in the technical field of medium voltage switchgear are spring operating mechanisms, and their power output track is rotary. The mechanism is prone to the following failures: the operating mechanism refuses to open, refuses to close, has no response, the opening and closing distance is not in place, and the operation fails. Therefore, there is a need for a swit...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a transmission structure to solve the problem of large sliding friction between the limit plate and the pin shaft in the existing transmission structure; the purpose of the present invention is also to provide a switch device to solve The switchgear in the prior art has relatively high requirements for the opening and closing power of the operating mechanism and the reliability of the switchgear is relatively low

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