Plum blossom contact finger pressure testing device

Abstract

The invention solves the problem that a plum blossom contact is easily damaged due to the fact that a contact finger pressure testing device in the prior art needs to be disassembled for testing. Thedevice comprises a test gun, an elastic expansion detection circular ring and a test probe; the test probe is fixedly connected to the gun head of the test gun, the elastic expansion detection circular ring movably sleeves the test probe, the elastic expansion detection circular ring is formed by annularly and tightly splicing a plurality of fan-shaped expansion units, the inner sides of the fan-shaped expansion units are inner arc surfaces, the distance between each inner arc face and the axis of the outer arc of the corresponding fan-shaped expansion unit is gradually decreased in the anticlockwise direction, a groove is formed in the tail end, in the clockwise direction, of each inner arc face of the corresponding fan-shaped expansion unit, and the bottom face of each groove is tangentto the inner arc face of the adjacent fan-shaped expansion unit. The contact finger pressure testing device solves the problems that an existing contact finger pressure testing device needs to be dismounted for testing, and the plum blossom contact is prone to being damaged.

Description

technical field [0001] The invention relates to a finger pressure testing device of a plum blossom contact, which belongs to the technical field of isolating switch testing equipment. Background technique [0002] The spring contact finger is a new type of electrical connection in the high-voltage switch industry. It has the advantages of simple structure, convenient installation, strong flow capacity, and cost saving. It is widely used in medium and high voltage circuit breakers and isolating switches. The spring contact finger has good performance. Damage directly affects the operation of the entire power grid. The electrical performance of the spring finger is directly related to the performance of the spring and the pressure generated by the spring on the finger. [0003] When the plum blossom contact is overhauled, it needs to be disassembled and then tested with special equipment. However, due to its special structure, the plum blossom contact is easy to cause damage d...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages of the existing contact finger pressure testing device, such as the need to disassemble and test the plum blossom contact, which is easy to cause damage to the plum blossom contact, the present invention designs a plum blossom contact finger pressure test device. Testing the tension of the head strap spring and judging whether the strap spring is fatigued or not

Images