| 摘要 |
A system and apparatus for winding a lifting cord. The device comprises a rotatable shaft (14), a wrapping guide (22) and a winding drum (12) mounted on the rotatable shaft (14) such that the winding drum (12) rotates with the shaft (14) and is free to move axially along the shaft (14). One end of the lifting cord (24) is attached to the winding drum (12). The wrapping guide (22) is configured to engage the lifting cord (24) such that as the shaft (14) and winding drum (12) rotate, the lifting cord (24) wraps around the winding drum (12) in even turns without overlapping and forces the winding drum (12) to travel axially along the shaft (14).
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