Damping device for tricycle

The invention relates to the field of tricycles, and particularly discloses a damping device for a tricycle. The damping device for the tricycle comprises a first damping assembly and a second dampingassembly, wherein each of the first damping assembly and the second damping assembly comprises a hydraulic barrel and a hydraulic cylinder; a hydraulic piston is arranged in each hydraulic barrel; each hydraulic barrel is divided into a supercharging cavity and a cleaning cavity by the corresponding hydraulic piston; the supercharging cavities and the hydraulic cylinders are stored with hydraulicoil; a pressure ball is arranged in each cleaning cavity; the diameter of each pressure ball is equal to the inner diameter of the corresponding cleaning cavity; a half axle of the tricycle is connected with rolling balls; the rolling balls are abutted to the pressure balls; the hydraulic cylinders are fixed on a frame; a push rod is fixed on the piston of each hydraulic cylinder; the supercharging cavity of the first dam