Measuring rope quick winding and unwinding device

The utility model relates to a construction tool for construction engineering. The utility model provides a rapid winding and unwinding device for a measuring rope. The structure is formed by weldingreinforcing steel bars; the rope winder comprises a rope winding wheel, a hand crank and a hand lifting rod, the rope winding wheel comprises two round wheels, a cross rod in the round wheels, a mandrel penetrating through the cross rod to form a middle shaft of the rope winding wheel, and 4-8 inner arc-shaped supporting rods evenly distributed between the two round wheels. The middle of the innerarc-shaped supporting rod abuts against the mandrel, a door-shaped hand lifting rod with a handle in the middle is connected to the near end of the mandrel in a sleeving mode through circular rings at the two ends of the door-shaped hand lifting rod and movably connected to the rope winding wheel, and the end of the L-shaped hand lifting handle is welded to one end of the mandrel. When the rope winding device is used, the