Stroke-unlimited hydraulic oil cylinder with self-correcting function

The utility model discloses a hydraulic oil cylinder with an unlimited stroke and a self-correcting function, and belongs to the technical field of hydraulic oil cylinders. The oil cylinder comprises a front cover and a rear cover, a cylinder pipe is arranged between the front cover and the rear cover, a piston and a piston rod are arranged in the cylinder pipe, one end of the piston rod penetrates through the front cover and extends out of the front cover, and the other end of the piston rod is located in the piston and connected with the piston. The two sides outside the cylinder pipe are sleeved with flanges respectively, one flange is fixedly connected with the front cover, and the other flange is fixedly connected with the rear cover. The rear cover is further connected with a fixing seat, and a joint bearing is arranged in the fixing seat. The stroke of the hydraulic oil cylinder is not limited, the application range is wide, and the oil cylinder connection effect is good; meanwhile, through angle swing