Load balance, double bucket cable stay crane with load sensing m

Details Load balance, double bucket cable stay crane with load sensing m Load balance, double bucket cable stay crane with load sensing m

1976-07-14

1977-08-02

Spar, Robert J.

Traversing hoists

Overhead

Cable

212 2, 214 2, 212 48, 212 63, B66C 2300, B66C 1316

Patent

active

040390861

ABSTRACT:
A horizontal gantry centered on the vertical tower of a crane supports on each side of the tower trolleys which move in unison in opposite directions at similar speed towards and away from the tower. Bulk material buckets are suspended from respective trolleys by vertical hoist cables. Sensors sense the loads of the buckets which are then compared, and the hoist and trolley drive motors are controlled to maintain load equilibrium on the crane to permit the buckets to be raised and the trolleys moved only when substantially equal loads are carried by the buckets.

REFERENCES:
patent: 654739 (1900-07-01), Lancaster
patent: 763222 (1904-06-01), Van Driessche
patent: 1507598 (1924-09-01), Gustafson
patent: 2667275 (1954-01-01), Llanusa

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