Double-locking device with auxiliary support and high-capacity switch equipment

Abstract

The invention discloses a double-locking device with an auxiliary support and high-capacity switch equipment. The double-locking device comprises a supporting seat, a connecting plate, a moving contact, a static contact, a crank arm, a first insulating support and a second insulating support, wherein the first insulating support and the second insulating support are arranged on the supporting seat; and the moving contact is connected to the first insulating support in the horizontal direction, the moving contact is connected to the second insulating support in the horizontal direction, the bottom of the crank arm is hinged to the supporting seat, the top of the crank arm is hinged to one end of the connecting plate, and the other end of the connecting plate is hinged to the moving contact.When the crank arm acts in an opening movement direction or a closing movement direction, opening or closing of the moving contact and the static contact can be realized. A first locking unit is arranged at the closing position of the moving contact and the static contact, and a second locking unit is arranged at the hinged position of the bottom of the crank arm and the supporting seat. The high-capacity switch equipment adopts the double-locking device.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical appliances, and in particular relates to a double-blocking device with auxiliary supports and a large-capacity switchgear. Background technique [0002] At present, in view of the large-capacity dynamic and thermal stability parameters of the switchgear, the following problems are solved: a) the problem of locking the moving contact during the peak withstand current test; b) the problem of the sinking of the contact during the closing process. The contact transmission system device is creatively designed, and the locking head is set on the transmission connecting plate to fit the locking surface on the crank arm. At the same time, a locking lever is set at the lower end of the crank arm to overcome the dynamic and static contact during the peak withstand current test. The huge electric force generated between them; through the design of the movement trajectory of the transmission c...

AI Technical Summary

Problems solved by technology

[0002] At present, in view of the large-capacity dynamic and thermal stability parameters of the switchgear, the following problems are solved: a) In the peak withstand current test, the problem of locking the moving contact; b) The problem of the sinking of the contact during the closing process

In this way, every transmission and support link has to bear huge electric power, and has high strength requirements for related parts, so the production cost is high.

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