Double-layer sleeve based on particle damper

The double-layer sleeve based on the particle damper comprises a connecting outer cylinder and a telescopic inner cylinder movably arranged in the connecting outer cylinder in a penetrating mode, a second spring is arranged at the bottom end in the connecting outer cylinder, the top end of the second spring abuts against the telescopic inner cylinder, and a damping block is vertically and movably arranged in the telescopic inner cylinder. The top end and the bottom end of the damping block are vertically connected with first springs; a plurality of damping particles are vertically arranged in the damping block, the multiple damping particles are connected in series through a rope, the two ends of the rope are fixed to the top wall and the bottom wall of the damping block respectively, buffer seats are arranged on the top wall and the bottom wall of the damping block, and arc-shaped grooves matched with the damping particles are formed in the buffer seats; a push plate slidably abutting against the inner wall