Combined gravity potential energy power generation device

The invention belongs to the technical field of power generation devices, and particularly relates to a combined gravity potential energy power generation device. The combined gravity potential energy power generation device comprises a gravity support and an electric cabinet, wherein a support frame is rotationally installed on the lower surface of the gravity support through a rotating shaft; acting connecting rods are installed at two ends of the lower surface of the gravity support; an acting rack is fixedly connected to the bottom end of each acting connecting rod; an overrunning clutch is arranged at the outer side of each acting rack; a gear ring is arranged on the outer wall of each overrunning clutch; and each gear ring is meshed with one corresponding acting rack. According to the device, firstly, double-shaft motors are started through external power supply, a gravity weight is pulled to move back and forth on rails through cooperation of small force of the double-shaft motors and large force of re