Recirculating gradient power system

A recirculating gradient power system, comprising:

• a motion carrier, horizontally arranged, having a central vertical axis as a pivot to change its tilt orientation and tilt angle, the motion carrier being provided with a track being annularly disposed on the motion carrier;
• a rotating shaft, vertically disposed at the position of the central vertical axis of the motion carrier;
• a counterweight, pivotally connected to the rotating shaft through a coupling mechanism, the counterweight being rotationally displaced from a high point of the motion carrier toward a lower point of the motion carrier about the rotating shaft by gravity to rotate the rotating shaft synchronously, the counterweight being provided with at least one roller in contact with the track to roll on the track, two ends of the coupling mechanism being pivotally connected to the rotating shaft and the counterweight respectively, and the counterweight being disposed at a position where the center of mass of the counterweight is located at an outer side of the motion carrier;
• a plurality of power cylinders, evenly arranged at diagonal corners around the periphery of the central vertical axis of the motion carrier, each of the power cylinders being provided with a push rod connected with a pressure source to drive the motion carrier to change the tilt orientation and the tilt angle, the pressure source being a fluid accumulator unit;
• a control module, being provided with a plurality of valve elements connected with the power cylinders, and two ends of each the valve elements being respectively connected with the pressure source and the corresponding power cylinder via pipes, respectively, wherein when the counterweight is rotationally displaced to a predetermined stroke, the control module controls the valve elements to be turned on/off to selectively make the power cylinders be communicated with the pressure source, so as to control the operation of the power cylinders which are set in advance;
• wherein a surface of the track which contacts the roller is provided with a wear-resistant structure, and the wear-resistant structure is formed of a wear-resistant material, or formed by polishing the surface of the track.