Amplitude related shock absorber

The utility model relates to an amplitude related shock absorber. The shock absorber comprises an upper end cover, a framework oil seal, a guider, an inner cylinder barrel, an outer cylinder barrel, a piston assembly, a bottom valve assembly and a lifting lug. The shock absorber is characterized by further comprising a piston rod, a middle cavity upper end cover, a one-way valve assembly, a middle cavity outer barrel and a middle cavity lower end cover, wherein the middle cavity upper end cover is in threaded connection with the piston rod, the one-way valve assembly is assembled between the piston rod and the middle cavity upper end cover and composed of a spring and a small ball, the middle cavity outer barrel is connected with the middle cavity upper end cover, and the middle cavity lower end cover is connected with the middle cavity outer barrel. An upper conical spring, a floating piston and a lower conical spring are arranged in a middle cavity. The upper conical spring and the lower conical spring are