Umbrella stand type expansion screw

The utility model discloses an umbrella stand type expansion screw which comprises a screw rod, a fixing pipe is arranged on one side of the screw rod, an expansion pipe is arranged on the screw rod, a nut and a gasket are arranged on the screw rod, the fixing rod is provided with an anti-disengagement piece, the anti-disengagement piece is located at the bottom of the fixing pipe, the anti-disengagement piece is located at the bottom of the fixing pipe, and the anti-disengagement piece is located at the bottom of the fixing pipe. According to the umbrella stand type expansion screw, the anti-disengaging part can be used for limiting installation of the expansion pipe, the fixing pipe and the expansion pipe can not be disengaged conveniently in the disassembling process, the anti-disengaging effect between the expansion pipe and the fixing pipe is achieved through the anti-disengaging part, when the installation position of the umbrella stand type expansion screw is not accurate, the umbrella stand type expan