Buffering device with contravariant rigidity

The utility model belongs to safeguard equipment for mechanical equipment, and relates to a buffering device with contravariant rigidity, which mainly solves the technical difficulty that the equipment is damaged as the effective buffering stroke of the conventional buffering device for the falling impact of a heavy object is insufficient. The buffering device adopts the technical scheme that the buffering device comprises a one-way valve, an oil tank, a cylinder body, a piston, adjusting rods and a bottom plate, wherein the bottom plate is arranged at the middle lower part of the inner cavity of the cylinder body, and divides the inner cavity of the cylinder body into a piston cavity and an oil storage cavity; the oil storage cavity of the cylinder body is arranged in the oil tank and communicated with the oil tank; the one-way valve is arranged on the bottom surface of the bottom plate and is communicated with the piston cavity of the cylinder body; the adjusting rods are mounted in oil drainage holes of th