Supporting base for tower crane

The utility model discloses a supporting base for a tower crane. Included are two baseplates, the lower ends of the two bottom plates are fixedly connected with a plurality of fixing pieces; damping blocks are fixedly connected to the upper and lower ends of two sides of the inner walls of the two bottom plates; a plurality of damping springs are fixedly connected between the two opposite dampingblocks; two grooves are fixedly formed in one side of the lower end of each of the two bottom plates; rotating shafts are fixedly connected to the middles of the interiors of the four grooves; the four rotating shafts are rotationally connected with a fixing frame; rotating holes are fixedly formed in the four fixing frames; the four grooves are rotationally connected with wheels through fixing frames; according to the supporting base for the tower crane, the grooves and the circular holes are formed; the size of the supporting base is convenient to adjust; when hoisting bearing needs to be increased above the crane,