Telescopic foot tube capable of being quickly locked

The utility model relates to a telescopic foot tube capable of being locked quickly, which belongs to the technical field of telescopic foot tubes and comprises an outer tube and an inner tube, and a locking component is arranged at the top of the inner tube. The locking assembly comprises a supporting seat, a connecting part and an expandable part, the connecting part is connected with one end of the inner pipe through the supporting seat, the expandable part is movably connected with the connecting part, the outer side of the expandable part is in movable contact with the inner wall of the outer pipe, and when the expandable part moves towards the supporting seat, the expandable part is connected with the connecting part. And the supporting seat can gradually open the periphery of the expandable part. The outer pipe and the inner pipe are fixed through the locking assembly, when the length of the telescopic foot pipe needs to be adjusted, the inner pipe and the connecting part are screwed in the direction a