Gravity clamping type clamp

The invention belongs to the technical field of clamps, and particularly discloses a gravity clamping type clamp which comprises a rack, a sliding frame, a connecting shaft, a connecting rod, clamp claws, a reset plate, a limiting plate and a limiting piece, wherein an accommodating cavity is formed in the top end of the rack, and movable grooves are formed in the front and rear ends of the rack;the sliding frame is movably arranged in the accommodating cavity, and a lifting ring is arranged at the top end of the sliding frame; the connecting shaft penetrates through the side end of the sliding frame; the two ends of the connecting shaft are exposed out of the movable grooves and hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the clamp claws;the clamp claws are hinged to the rack; and the reset plate, the limiting plate and the limiting piece are matched to limit the connecting shaft. By adopting the gravity clamping type clamp, the gravity clamping type clamp is