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Hitachi Ltd
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Techno Engineering Co Ltd
Hitachi Ltd
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Filing date
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Application filed by Hitachi Techno Engineering Co Ltd, Hitachi LtdfiledCriticalHitachi Techno Engineering Co Ltd
Priority to JP22636587ApriorityCriticalpatent/JPS6469496A/en
Publication of JPS6469496ApublicationCriticalpatent/JPS6469496A/en
PURPOSE: To remove ropes by use of simple constitution by providing hooks at hanging beams in such a way that the hooks are free to rotate about pins, and providing the hooks above the pins with rotors. CONSTITUTION: To remove ropes 6, 6 from hooks 5, 5, a rod 20a is moved back by control of an actuator 20 after a long-size matter 7 has been grounded. Since ropes 25, 26 are pulled, sheaves 13, 13 are held down and the hooks 5, 5 rotate outward about pins 10, 10. Since control levers 12a, 12a also are pulled up, come off preventive devices 12, 12 open their mouths. Therefore, the ropes 6, 6 drop downward.