Welded junction fatigue testing device of automotive shock absorber system

The invention provides a welded junction fatigue testing device of an automotive shock absorber system. The device includes a worktable, a threaded through hole and a circular through hole; a rectangular through hole is formed in the center of the front end face of the left half part of the worktable; a first square plate is welded to the tops of four locating columns; a second square plate movesback and forth vertically along the four locating columns through locating holes formed in the included angles of the four margins of the top end face of the second square plate. Through arrangement of four groups of real-time monitoring mechanisms, an operator can conveniently zoom in or zoom out on images transmitted by a camera in real time by touching and controlling a touch-type displayer when a welded junction fatigue test is carried out on an automotive shock absorber, and therefore whether or not micro cracks such as fatigue stripes or fatigue striations occur on welded junctions can be more specifically obser