Stepless adjustable damping valve for oil shock absorber

The utility model discloses a stepless adjustable damping valve for an oil shock absorber. The stepless adjustable damping valve is connected with an unloading valve body, and comprises an electromagnetic valve, an adjusting valve and an unloading valve, the electromagnetic valve, the adjusting valve and the unloading valve are sequentially and vertically connected, the bottom of the unloading valve is connected with a shock absorber body through a valve seat sealing ring and a sealing check ring, the upper end of the unloading valve is connected to the shock absorber body through a valve body sealing ring, the electromagnetic valve is connected with the upper portion of the shock absorber body through an electromagnet sealing ring, the electromagnetic valve is in threaded connection with the adjusting valve, and the electromagnetic valve and the adjusting valve are in pretightening connection through springs. The adjustable damping valve is simple in structure, damping force of the shock absorber can be adjusted according to road conditions and the will of a driver, the damping force can be adjusted completely according to input signals of a system, and riding comfort is greatly improved.