① The elimination methods of vibration and noise caused by various hydraulic components can refer to the relevant contents in this book.

② The vibration of the motor can be solved by balancing the motor rotor, installing the anti vibration rafter leather pad under the motor base, and replacing the motor bearing. Ensure the installation concentricity of "motor hydraulic pump" device. Isolation from external vibration source (such as excavation of anti vibration trench) or elimination of external vibration source can enhance the rigidity of connector with external load.

③ The oil tank device adopts anti vibration measures and measures to eliminate the air pumped in.

④ Various anti resonance measures are adopted. : change the spring stiffness of one of the valves or adjust the pressure appropriately. For pipeline vibration, if it is pressed by hand and the timbre changes, it means that it is pipeline vibration circuit. Gear pump can eliminate it by installing pipe clamp, appropriately changing the length and thickness of pipeline, or adding a section of hose in the pipeline for damping.

⑤ Pipes. If the size of the oil return pipe is changed, it should be thickened and shortened appropriately; when the oil outlet of the two pumps flows, the flow direction of the oil outlet of the two pumps should not be converged in pairs, which is less than 90. The angle flow of the flow.

⑥ The resonance of oil tank can be eliminated by thickening the top plate of oil tank and welding reinforcing ribs; a layer of hard rubber plate can be filled under the base of "motor hydraulic pump" device, or the "motor hydraulic pump" device can be separated from the oil tank; vibration eliminator can be used when necessary.

⑦ The Electro-hydraulic Directional Valve with damping is selected and the directional speed of the directional valve is adjusted.

⑧ For the vibration of the hydraulic control check valve, measures such as increasing the hydraulic control pressure, reducing the back pressure of the oil outlet and adopting the leakage hydraulic control check valve can be taken.