| 摘要 |
A pulley guides a cable on an overhead framework structure which is suspended from a ceiling by a threaded rod. The pulley includes a guide structure which guides the cable longitudinally through the pulley, and further includes a bracket structure which mounts the guide structure on the threaded rod. The guide structure can be mounted on the threaded rod in a first position in which a cable can be moved transversely into and out of the guide structure, and can be alternatively mounted on the threaded rod in a second position in which the cable cannot be moved transversely into or out of the guide structure.
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