Sealing assembly anti-shearing type hydraulic oil cylinder

The utility model discloses a sealing assembly anti-shearing hydraulic oil cylinder which comprises an oil cylinder, a piston and a piston rod, an installation rod is arranged at the bottom end of the piston rod, the piston is arranged at the outer end of the installation rod in a sleeved mode, the outer end of the installation rod on the bottom side of the piston is in threaded connection with a second nut, and the piston is arranged on the inner wall of the oil cylinder in a sliding mode. The upper buffering plate and the lower buffering plate are arranged on the two sides of the piston, collision between the piston and the inner walls of the upper side and the lower side of the oil cylinder can be buffered, when the piston moves to make contact with the upper buffering plate and the lower buffering plate, force unloading can be conducted on the piston through cooperation of the elastic force of the spring and the telescopic rod, the buffering effect is achieved, and therefore the piston is prevented from i