Hydro-pneumatic suspension device and engineering vehicle

The utility model provides a hydro-pneumatic suspension device and an engineering vehicle. The hydro-pneumatic suspension device comprises a vehicle frame, the middle suspension cylinder is connectedwith the frame, and the middle suspension cylinder comprises a first rod cavity and a first rodless cavity; the rear suspension cylinder is connected with the frame, and the rear suspension cylinder comprises a second rod cavity and a second rodless cavity; the energy accumulator is communicated with the first rodless cavity and the second rodless cavity; wherein the first rod cavity is communicated with the second rod cavity, and the first rodless cavity is communicated with the second rodless cavity. The utility model provides a hydro-pneumatic suspension device. The device comprises a frame, a middle suspension cylinder, a rear suspension cylinder and an energy accumulator, a first rod cavity of the middle suspension cylinder is communicated with a second rod cavity of the rear suspension cylinder; the first ro