Motorized load rotation device with autonomous power supply for cable lifting mechanisms
US5071184A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Jul 18, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C13/46
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The device comprises a pulley block body (11) having several lines (25, 26, 27, 28) and several pulleys (12, 13) over which passes a lifting cable (4) forming a block and tackle (15), a grappling element (15) mounted to turn around a vertical shaft (14) and accommodating a hook (9), and electric motorization (16) to drive grappling element (15) in rotation. Pulley (13), over which the cable in the block and tackle passes, serves to drive an electric generator (35) which charges accumulators (36), the latter supplying the electricity needed for motorization (16). The device is applicable to turret slewing cranes and other cable lifting mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.