Oil damper

An oil damper comprises a pressure cylinder filled with oil, a piston rod extending into the pressure cylinder, an oil storage cylinder arranged outside the pressure cylinder in a sleeving mode, a guide bearing arranged in the oil storage cylinder and matched with the piston rod in a guiding mode, an inner sealing assembly sealing the position between the piston rod and the guide bearing and an outer sealing assembly sealing the position between the guide bearing and the oil storage cylinder. An inner cavity of the cylinder force cylinder is a pressure cavity I, an oil storage cavity II is formed between the pressure cylinder and the oil storage cylinder, the pressure cavity I and the oil storage cavity II are communicated through a plurality of damping force adjusting valves which are installed on the guide bearing and are adjustable in damping force, the damping force adjusting valves are evenly distributed in the circumferential direction of the guide bearing, and the opening rigidities of the damping forc