The invention discloses a lifting machine plate rack capable of breaking away from a power source and belongs to the technical field of lifting machines. The lifting machine plate rack comprises a plate rack body used for lifting objects and a supporting body used for clamping and positioning a driving shaft, the plate rack body is an integral part composed of a supporting plate and a pad plate, the supporting plate is provided with a third through hole and a pair of second through holes, each second through hole comprises a connection hole position and a position-limiting groove mouth, the plate rack body is provided with a pair of first through holes, the pad plate is provided with a pair of rectangular groove mouths, the supporting body comprises a first rectangular block and a second rectangular block, one direction opposite side surfaces of the first rectangular block and the second rectangular block are both correspondingly provided with semicircular step grooves, the second rectangular block is connected with the pad plate through a screw rod, the third through hole is internally matched with one driving shaft, and the driving shaft is detachably fixed to the plate rack bodythrough the supporting body. According to the lifting machine plate rack capable of breaking away from the power source, by means of the manner that the lifted plate rack body is fixed by a supporting rod, and then a lifting device driving the driving shaft is dismantled, and then the utilization rate of the lifting device is increased.