Quick clamping device used on workbench

The utility model discloses a quick clamping device used on a working table, which comprises a rotating presser foot, a movable arm, a rotating handle, a support plate, a switch handle, an inner hexagon bolt, a tension spring, a pressure spring and an adjusting screw, and is characterized by further comprising a sliding rod and a fixed body, the sliding rod is a cylindrical long rod and can flexibly pass through a working hole preset on the working table, and the fixed body is fixed on the sliding rod. A section of threaded hole is formed in one end of the fixing body, a transverse through hole is formed in the head of the fixing body and used for installing the movable arm, a vertical through hole is formed in the middle of the fixing body and connected with the sliding rod through a hexagon socket screw, a protrusion is arranged on the lower portion of the right face of the fixing body, and a transverse through hole is formed in the tail of the fixing body. 本实用新型公开了一种在工作台上使用的快速夹紧装置，包括转动压脚、活动臂、转动手柄、支撑板、开关手柄、