Motorized load rotation device with autonomous power supply for

Details Motorized load rotation device with autonomous power supply for Motorized load rotation device with autonomous power supply for

1990-07-18

1991-12-10

Focarino, Margaret A.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Driven positioning mean

318161, B66C 134, H02K 700

Patent

active

050711849

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.

REFERENCES:
patent: 1577283 (1926-03-01), Mitchell
patent: 3210115 (1965-10-01), Graham et al.
patent: 3633961 (1972-01-01), Speransky
patent: 4065702 (1977-12-01), Locker et al.
patent: 4321478 (1982-03-01), Plunkett et al.
patent: 4612494 (1986-09-01), Kawamura
patent: 4642535 (1987-02-01), Hucker

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