Vehicle-used adjustable hydraulic shockproof device

The utility model relates to a vehicle-used adjustable hydraulic shockproof device which aims to solve the problem that when a vehicle travels, wheels jumps up and down due to uneven pavement to drive kinetic energy for extruding a piston in a hydraulic shockproof device body and a piston rod up and down, so that generated high-pressure oil is circularly supplied and transmitted and other kinetic energies are used for the vehicle. The vehicle-used adjustable hydraulic shockproof device is structurally characterized in that at least a group of oil inlet inverted valve and oil outlet inverted valve is respectively arranged on the upper side and the lower side of the hydraulic shockproof device body and connected with an oil storage tank and a linkage component; an adjusting screw is respectively mounted on the oil outlet valve so as to adjust the application scope; and oil in the oil storage tank is compressed and output by the hydraulic shockproof device body through the vertical reciprocating movement of the