Press fitting valve spring device

The utility model discloses a press fitting valve spring device which comprises a supporting frame. A rotating arm extending forwards is hinged to the upper portion of the supporting frame. The rotating arm is connected with a supporting arm extending downwards through a height adjusting device, an extrusion device is installed on the lower portion of the supporting arm, the vertical distance can be adjusted through a screw rod, the position can be adjusted through the rotating arm, and the controllability is high. A guide plate is installed on the rotating arm and can guarantee that the supporting arm performs up-and-down motion along a straight line, an eccentric wheel is installed on the lower portion of the supporting arm, pressing disc holes in a pressing disc correspond to a valve spring upper base, the eccentric wheel is utilized to press the pressing disc, the pressing disc and a valve spring are stressed evenly, the force application process is stable, and unbalance of a cylinder cover is avoided; th