Anti-loose shock absorber

An anti-loose shock absorber comprises an outer sleeve and a cover plate, a cavity is formed in the outer sleeve, the cover plate covers the upper end of the outer sleeve to seal the outer sleeve, a protruding block protruding outwards is arranged at the upper end of the outer surface of the outer sleeve, a protruding edge corresponding to the protruding block is arranged on the outer side of the cover plate, and an anti-loose gasket is arranged above the protruding edge of the cover plate. And the bolt sequentially penetrates through the anti-loose gasket and the convex edge and is tightened in the convex block. When the shock absorber is in a working environment of continuous vibration, the anti-loosening gasket can limit the bolt to rotate towards the loosening direction, so that loosening between the cover plate and a plurality of sets is prevented, the shock absorption effect of the shock absorber is ensured, and potential safety hazards of a machine are avoided. The device is simple in structure, low in