Switch service life tester

The utility model discloses a switch service life tester which comprises an engine base, an air cylinder support frame and an air cylinder, wherein a movable wheel for pressing a switch button is pin jointed with the lower end of an air cylinder piston rod, and the front end of the movable wheel protrudes outside the air cylinder piston rod; a workpiece clamping device is also arranged on the engine base, and the workpiece clamping device is arranged in the front of the air cylinder support frame. During using, the air cylinder drives the movable wheel to move up and down, and the movable wheel is used for controlling the switch to be opened and closed, manual pressing can be replaced, thus the workload of the operating personal is reduced; the control circuit controls a magnetic valve, and thus the lifting of the air cylinder is controlled, the workload of the operating personnel can be further reduced, and the efficiency is increased; and through adopting the design of a buffer regulating valve, the movemen