Grounding switch contact

Abstract

The invention discloses a grounding switch contact, which comprises a static contact conductor, a shielded static contact, a contact spring, a static arcing contact, a guide cylinder, a guide block, a buffer spring, an insulating gasket, and a grounding switch moving contact. Head, moving contact seat. The contact spring is sleeved on the outer wall of the middle hole of the shielded static contact, the guide cylinder and the static arc contact are sleeved in the inner cavity of the shielded static contact, and the buffer spring sleeve Connected to the outer end of the guide rod, the two ends of the buffer spring respectively lean against the inner wall of the cup-shaped conductor and the spring stop steps of the guide cylinder, and an insulating gasket is provided between the buffer spring and the inner wall of the cup-shaped conductor; The conductive rod is movably nested in the movable contact seat, and the arc-resistant alloy of the movable contact on the conductive rod can abut against the arc-resistant alloy of the static arc-starting contact on the cup-shaped conductor to realize the closing of the switch. Because the electric contact of the present invention adopts the end face of the static arcing contact to contact with the front face of the moving contact of the earthing switch, the contact is more reliable.

Description

technical field [0001] The invention relates to a high-voltage switchgear, in particular to a grounding switch contact. Background technique [0002] The grounding switch is a kind of isolating switch, which is mainly used for the work of the grounding part of the circuit. like Figure 1A As shown, the existing grounding switch contacts are mainly composed of a static contact seat 1', a shield cover 2' with an arc-resistant alloy, a plum blossom contact 3' with an arc-resistant alloy, a moving contact seat 4', and an arc-resistant alloy. Alloy moving contact 5', the inner end of the arc-resistant alloy shield 2' is fixed on the static contact seat 1', and the inner end of the arc-resistant alloy plum blossom contact 3' is fixed on the static contact seat 1' and set in the inner cavity of the shielding cover 2', the moving contact 5' with arc-resistant alloy is movably set in the moving contact seat 4' and the moving contact 5' can be inserted into the shielding cover 2' and...

AI Technical Summary

Problems solved by technology

In this traditional grounding switch contact, the contact between the movable contact 5' and the static contact mainly depends on the contact between the outer surface of the movable contact 5' and the inner surface of the plum blossom contact 3' to form an electrical connection, and the electrical contact The reliability is poor, the structure is complex, there is no buffer when the moving contact closes, and the impact force is large, which affects the mechanical life of the product

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