▎ 摘　　要

NOVELTY - The test device comprises a test box (11) for testing the silver-plated coating of the contact (3). The front side of the test box is opened, and the opening is provided with a door (17). The test box is top unit mounted with a device box (2). The lower unit of the device box is provided with a telescopic mechanism. The device box is provided with a driving device (63) for driving the telescopic mechanism longitudinal reciprocating telescopic device. The contact is detachably installed on the lower unit of the telescopic mechanism. The bottom of the test box is provided with a sliding groove. The sliding groove is slidingly provided with a clamping base (6). The sliding groove is provided with a position adjusting mechanism for driving the clamping base to move. The clamping base is used for fixing the sensing finger. The back of the testing box is located at the contact position provided with a telescopic silver plating layer detecting device (7). USE - Device for testing service life of contact used in isolation switch detection device technology field. ADVANTAGE - The telescopic mechanism and the clamping base can adapt to the installation of different types and sizes of contact fingers, and the wear degree of the graphene silver-plated coating of the contacts is detected by the telescopic silver-plated layer detection device, and the test box produces different temperatures and humidity, which can simulate the test of the impact of the closing and closing actions on the wear of the graphene silver coating of the contacts in different environments. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of device for testing service life of contact used in isolation switch detection device technology field. 1Storage cabinet 2Device box 3Contact 4Contact finger 6Clamping base 7Telescopic silver plating layer detecting device 11Test box 12Display screen 13Steam generator 14Motor 15Wireless transmission module 16Sliding notch 17Door 18Proximity switch 63Driving device