Hydraulic ramming device based on load port independent control and control method thereof

Abstract

The application provides a hydraulic tamping device based on load port independent control and a control method thereof. The hydraulic tamping device based on load port independent control comprises a vibration excitation cylinder, a load port independent control valve and a controller. A displacement sensor for detecting the moving distance of the piston of the vibration excitation cylinder is arranged in the vibration excitation cylinder. A first pressure sensor and a second pressure sensor are arranged on the oil paths of the rodless cavity and the rod cavity of the vibration excitation cylinder, respectively. The load port independent control valve comprises a first main valve, a first pilot valve, a second main valve and a second pilot valve. The controller is electrically connected with the displacement sensor, the first pressure sensor, the second pressure sensor, the first pilot valve and the second pilot valve, respectively, and is used for controlling the displacement direction and the opening degree of the first main valve and the second main valve in a displacement curve cycle of the vibration excitation cylinder according to a single valve core mode or a double valve core mode, so as to adjust the back pressure of the vibration excitation cylinder. The application can reduce the impact on the hydraulic system and reduce the control operation cost.

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