Quick winding and unwinding device for measuring rope

The invention relates to a construction tool for a construction project, and provides a quick winding and unwinding device for a measuring rope. The structure of the winding and unwinding device is welded by steel bars and includes a winding wheel, a hand-shaking handle and a handheld rod, the winding wheel comprises two round wheels, a cross-shaped supporting rod in each round wheel, core shaftspenetrate through the cross-shaped supporting rods and becoming the middle shaft of the winding wheel, and four to eight inner arc supporting rods evenly distributed between the two round wheels, themiddles of the inner arc supporting rods are in propped connection with the core shafts, the n-shaped handheld rod with a handle in the middle is in sleeving connection with the near ends of the coreshafts through the round rings at the two ends of then-shaped handheld rod and movably connected to the winding wheel, and the end of L-shaped hand-shaking handle is in welded connection with one endof each core shaft. During u