The invention relates to equipment for dismounting and mounting an axle of a heavy machine. According to the technical scheme, the equipment comprises a crawler belt wheel system clamp, a balance elbow clamp, a torsion shaft puller, a tire clamp, a pneumatic tool holder and a mechanical wrist for dismounting and mounting the axle. When the equipment is matched with a dismounting and mounting manipulator of general equipment, a drive wheel, a load-bearing wheel and an inducing wheel of crawler belt type heavy mechanical equipment can be dismounted and combined, a balance elbow and a torsion shaft can be dismounted, pulled and combined, a tire of wheel type heavy mechanical equipment can be dismounted and combined, using platforms for the pneumatic tools such as an impaction wrench can be supported, other parts can be grabbed, loaded and unloaded; and all the clamps and pullers can be managed in an integrated mode. By the equipment, the labor intensity of maintenance personnel is effectively reduced, the safety conditions are improved, and the working efficiency is improved; and the equipment can be applied to production lines and maintenance lines of various kinds of heavy machinery.