Bolt-sphere prestressing adapter with bamboo structure

The invention relates to a bolt-sphere prestressing adapter with a bamboo structure. The bolt-sphere prestressing adapter comprises a circular casing pipe, a conical head, a bolt bar, a sleeve and a bolt pin, wherein the circular casing pipe is internally provided with a prestressing wedge-shaped expansion rod, a prestressing wedge-shaped sleeve and driving gears, the prestressing wedge-shaped sleeve is arranged on the prestressing wedge-shaped expansion rod, ear plates are symmetrically arranged on the outer surface of the circular casing pipe, driving gear mounting holes are formed in ear plate mounting places on the side wall of the circular casing pipe, the driving gears are arranged on the ear plates and penetrate through the side wall of the circular casing pipe, and a plurality of cogs matched with tooth sockets on the prestressing wedge-shaped expansion rod are arranged on the periphery of the driving gear. The bolt-sphere prestressing adapter with the bamboo structure is simple in installation and is