The invention belongs to the technical field of mechanical equipment accessories, and particularly relates to a clamp structure for grabbing mechanical equipment. The clamp structure for the grabbingmechanical equipment comprises a top shell, a main lug, an auxiliary lug, a main frame, bearings, bottom pads, an auxiliary frame and a fixed bolt; and the left side wall and the right side wall of the top shell are fixedly connected with the main lug and the auxiliary lug through screws. The clamp structure for the grabbing mechanical equipment can control a main push rod device and an auxiliarypush rod device to push a telescopic rod, after the telescopic rod influences the main frame and the auxiliary frame, logs of same specification can be clamped, after being matched with the bottom pads, the contact area is large, the friction effect is strong, the sliding probability is reduced, after being clamped, the circumferential outer walls of the logs of the same specification are contacted with side pads, the side pads are stressed to be matched with springs to retract, cross rods synchronously move to trigger trigger switches on contact plates, so that miniature electric push rods push connecting rods, the bottom protection effect is achieved, the falling prevention performance is good, the double-safety effect can be achieved, the transfer of the logs of the same specification has safety and stability, and the transfer efficiency of the logs of the same specification is improved.