Grouped plate pulling mechanism

The utility model discloses a grouped plate pulling mechanism which is arranged at a filter press with a hydraulic station. The grouped plate pulling mechanism comprises a left plate pulling device and a right plate pulling device which are arranged at left and right sides of the filter press, wherein each of the left plate pulling device and the right plate pulling device comprises a plate pulling oil cylinder which is a dual-effect hydraulic cylinder with a single piston rod; the stretching directions of piston rods of the plate pulling oil cylinder are direction toward the machine tail of the filter press along the length direction of the filter press; one end of each piston rod of the plate pulling oil cylinder is connected with a piston of the plate pulling oil cylinder, the other end of each piston rod extends out of an oil cylinder body, and each of the end parts of the oil cylinder body is connected with a pulling rod; at least two open frame piston cylinders are mounted on each pulling rod; the open frame piston cylinders mounted on the two pulling rods are the same in quantity and are symmetrically arranged relative to the filter press; a piston connecting rod of the open frame piston cylinders of the left plate pulling device horizontally faces towards the right side of the filter press during stretching; a piston connecting rod of the open frame piston rods of the right plate pulling device horizontally faces towards the left side of the filter press during stretching. The grouped plate pulling mechanism is simple in structure, convenient to maintain, and easy to regulate.