Multi-stage telescopic steel dam gate

The utility model discloses a multistage telescopic steel dam gate which comprises a main dam body and a triangular push block, a hydraulic press is installed on one side of the outer surface of the main dam body, the triangular push block is installed on one side of the hydraulic press, a motor is installed at the bottom of the inner surface of the main dam body, a reduction gear set is arranged on one side of the motor, and the hydraulic press is installed on the other side of the motor. And a screw rod is mounted at one end of the reduction gear set. Compared with an existing common steel dam gate, according to the multi-stage telescopic steel dam gate, water flow flows through a water passing channel below a dam body and drives a windmill wheel to rotate, the windmill wheel drives a bevel gear set on one side of a transmission shaft, the bevel gear set drives a wheel disc to rotate, and a bent arm installed on the wheel disc rotates along with rotation of the wheel disc; a fixing shaft installed at one en