Automatic filling system for hydro-pneumatic spring

The utility model discloses an automatic filling system for a hydro-pneumatic spring, which comprises a hydraulic oil filling system, the hydraulic oil filling system adopts a pneumatic booster pump as power equipment, and hydraulic oil is pumped into a main cavity or a back pressure cavity of the hydro-pneumatic spring; the vacuumizing system is communicated with the back pressure cavity of the hydro-pneumatic spring and is used for vacuumizing the back pressure cavity; the nitrogen filling system is communicated with the back pressure cavity of the hydro-pneumatic spring and is used for filling nitrogen; the automatic detection system is matched with the above systems and is used for automatically controlling filling, vacuumizing and nitrogen filling of the hydraulic oil; according to the automatic filling system for the hydro-pneumatic spring, full-automatic control is achieved, the filling efficiency of the hydro-pneumatic spring is effectively improved, the risk that redundant objects enter the hydro-pne