Hydraulic tensioning device for tile bucket of bucket elevator

The utility model discloses a hydraulic tensioning device for a tile bucket of a bucket elevator, which relates to the related technical field of bucket elevators and comprises a fixed shaft, a connecting shaft is arranged in the middle of the fixed shaft, the diameter of the connecting shaft is smaller than that of the fixed shaft, a bearing is rotatably connected to the outer surface of the connecting shaft, and the diameter of the bearing is the same as that of the fixed shaft. And the outer surface of the bearing is rotationally connected with a roller, sliding grooves are formed in the two side ends of the roller correspondingly, the two ends of the fixing shaft are slidably connected with second limiting sleeves correspondingly, and the two ends of the fixing shaft are slidably connected with fixing frames correspondingly. The fixing frame and the fixing shaft are fixed together through the second fixing plug pin, the external oil pump is connected with the oil way in the hydraulic cylinder through the