The invention relates to the technical field of automobile accessories, in particular to a speed-regulating pressure-regulating shock-absorbing supporting device capable of replacing a steel plate spring of an automobile
shock absorber, which comprises a cylinder
barrel, a cylinder cap is fixed on the outer wall of the top end of the cylinder
barrel, the bottom end of the cylinder
barrel is connected with a lower connecting plate, and a buffering shock-absorbing
assembly is arranged on the cylinder barrel. The buffering and damping
assembly comprises a
piston rod and a flow adjusting component, the outer wall of the
piston rod is slidably connected with the upper portion of the inner wall of the cylinder barrel, the portion, located below the
piston rod, of the inner wall of the cylinder barrel is filled with hydraulic oil, and the portion, located above the hydraulic oil, of the inner wall of the
piston rod is filled with
nitrogen. And in cooperation with the cylinder barrel, the small piston, hydraulic oil and the flow regulating valve, the pressure borne by a vehicle body can be effectively reduced, meanwhile, the weight of the device is reduced, and buffering softness is achieved during damping.