Spring contact finger service life testing method and tool

Abstract

The invention provides a spring contact finger service life testing method and tool. The spring contact finger service life testing method comprises the steps that a spring contact finger is installed inside a positioning annular groove in a contact base, a contact and the spring contact finger which are coaxially assembled perform reciprocating plugging motion in the axial direction, meanwhile, a counter is used for counting, and the deformation phenomenon of the spring contact finger is observed in real time. The spring contact finger service life testing method is simple and convenient to implement, and easy to implement, the spring contact finger is installed inside the positioning annular groove in the contact base, extrusion of the spring contact finger can be completed only by enabling the contact and the spring contact finger which are coaxially assembled to perform reciprocating plugging motion in the axial direction, counting is performed through the counter, operation can be stopped at any moment, and the deformation phenomenon of the spring contact finger can be observed during different plugging frequencies.

Description

technical field [0001] The invention relates to a testing method and tooling for the service life of a spring contact finger. Background technique [0002] The spring contact finger is an important elastic electrical connection element on high-voltage switch products. It belongs to spring parts and is made of copper alloy. Such as Figure 1 to Figure 2 As shown, the shape of the spring contact finger is spiral, the cross-section is oval (flat spring), and the joints at both ends are welded together to form a circular ring, usually wound by copper wire with a wire diameter of φ0.5mm-φ2mm. When in use, the spring contact fingers are installed in the positioning ring groove of the contact seat, so that the contact head and the spring contact fingers move relative to each other to realize the conduction and separation of the current. The flow capacity and service life are two important indicators of the spring contact finger. The flow capacity can be obtained by measuring its e...

AI Technical Summary

Problems solved by technology

At present, there is no special device for testing the life of spring contacts. The life test of spring contacts must be carried out simultaneously with the test of high-voltage switch products. It takes 3-5 months or even longer to complete the test, and the test requires a lot of resources, high cost and long cycle

Images