Point switch and action plate group mechanism thereof

The invention discloses a point switch and an action plate group mechanism thereof, and belongs to the technical field of point switches. The action plate set mechanism comprises an action plate, quick-acting pieces, guide shafts and a compression spring, the action plate is of a long-strip-shaped structure with the upper portion provided with a rolling plane and the two ends provided with climbing slopes, a fixing plate connected with locking iron is arranged at the bottom of the action plate, an axial through hole is formed in the center of the action plate, and the two quick-acting pieces, the two guide shafts and the compression spring are arranged in the axial through hole. The inner ends of the two guide shafts are provided with guide holes for the compression springs to stretch in, the two quick-acting pieces are connected to the outer ends of the two guide shafts respectively, the two ends of the axial through hole are further provided with limiting mechanisms, and the upper portions of the quick-acti