tap changer

Abstract

The invention discloses a tap changer, which includes a switch base, a handle, a rotating shaft, a moving contact piece and a static contact piece. By rotating the rotating shaft, the moving contact piece is connected or disconnected from the static contact piece. A pin shaft is pierced between the two movable contact pieces, and a compression spring seat is movably arranged on the upper end of the pin shaft, and a compression spring is limited by the compression spring seat and the moving contact at the upper Between the sheet monomers, there is also a circle of ring-shaped slide rails fixedly arranged. The ring-shaped slide rails are provided with chute portions with high undulations and low undulations at intervals, and slide bars are connected to the spring seat. , the sliding rod is slidably fitted on the chute part, when the static contact piece and the moving contact piece are in a contact conduction state, the sliding rod is located at the low undulation part of the chute part, when the When the static contact piece and the moving contact piece are separated and disconnected, the slide bar is located at the high undulation part of the chute part, and at this time, the two moving contact pieces are separated.

Description

technical field [0001] The invention belongs to the technical field of switches, and more specifically relates to a tap changer. Background technique [0002] The tap changer includes a moving contact and a static contact. In order to ensure good contact between the moving contact and the static contact, a certain pressure is generally applied to the two moving contact pieces of the moving contact to ensure The two are in close contact. However, the above arrangement also brings certain problems: Specifically, when the movable contact is separated from the static contact, since the static contact is pressed by the passive contact, the movable contact is separated from the static contact by rotating the movable contact. When the tap changer is tapped, the wear between the moving contact and the static contact is relatively serious, which greatly reduces the life of the tap changer. [0003] Based on the above problems, existing products also have a structure such as a space...

AI Technical Summary

Problems solved by technology

However, the above arrangement also brings certain problems: Specifically, when the movable contact is separated from the static contact, since the static contact is pressed by the passive contact, the movable contact is separated from the static contact by rotating the movable contact. When contacting, the wear between the moving contact and the static contact is relatively serious, which greatly reduces the life of the tap changer

[0004] However, in the above-mentioned structure, the repeated abutment between the two contact pieces of the spreader and the movable contact also greatly increases the wear degree of the contact piece at the above-mentioned abutment position, which makes it difficult to maintain the life of the movable contact piece (static contact The friction between the piece and the moving contact piece is eliminated)

Images