Combined tool for splitting livestock carcasses into halves

The invention relates to animal product processing, in particular to a combined tool for splitting livestock carcasses into halves, which is used for splitting pig carcasses into halves and comprises a splitting knife, a crank arm for fixing the splitting knife, a gravity balancer hinged to the tail end of the crank arm, a driving motor connected with the crank arm through a driving shaft, a positioner arranged in front of the splitting knife, an air cylinder hinged to the positioner and a rack. The driving motor is installed on the rack, and the gravity balancer, the positioner and the air cylinder are hinged to the rack; the pair of crank arms is connected to the two sides of the driving motor respectively; and a pair of splitting cutters are arranged and are respectively fixed at the front ends of the two crank arms. Compared with the prior art, the problem that in the prior art, when a splitting cutter performs splitting, vibration is generated, stress is unbalanced, and then the splitting uniformity is p