Bidirectional linkage clamping and detecting device for single-cylinder hinge of automobile welding fixture

The utility model discloses a bidirectional linkage clamping and detecting device for a single-cylinder hinge of an automobile welding fixture. The device comprises a working box and a fixed bottom plate, the bottom of the working box is fixedly connected with the top of a fixed bottom plate; an air cylinder is fixedly connected to the middle of the top of an inner cavity of the working box through a connecting block, a push plate is fixedly connected to the surface of a push rod of the air cylinder, a first sliding groove is formed in the surface of the push plate, and a rotating block is connected to the inner surface of the first sliding groove in a sliding mode. The utility model discloses a single-cylinder hinge bidirectional linkage clamping and detecting device of an automobile welding fixture. A hinge structure is used for extruding and clamping; and then part of reacting force is counteracted through the friction force of the double sliding grooves, the shaking bearing force is improved, and the prob