Cylinder group system

The invention relates to a cylinder group system. The cylinder group system comprises a cylindrical shell and a main shaft, wherein a front end cover and a back end cover are arranged at the two ends of the shell; the main shaft passes through the centers of the front end cover and the back end cover, and is fixed with the front end cover and the back end cover through a bearing. The cylinder group system is characterized in that a connecting shaft arm is fixed on the main shaft; a hydraulic thruster is hinged to the inner wall of the shell; the end part of a hydraulic rod of the hydraulic thruster is hinged to the connecting shaft arm; cylinder push rod frames are fixed on the main shaft at equal intervals along the axial direction; the cylinder push rod frames consist of cylinder push rods which are distributed on the same circumference at equal intervals and are vertical to the main shaft; cylinder adjusting brackets which are the same with the cylinder push rods on a single cylinder push rod frame in quantity are fixed on the inner wall of the shell at equal intervals; cylinders are connected with the cylinder adjusting brackets; an air exchanging header is arranged in the shell. The cylinder group system has the advantages that energy of other forms can be input into the cylinder group system through a hydraulic system for conversion, and is output in the form of high-pressure gas, so that the aim of reasonably utilizing energy is fulfilled.