Container handling and lifting equipment, such as a crane or a g

Details Container handling and lifting equipment, such as a crane or a g Container handling and lifting equipment, such as a crane or a g

1979-12-17

1982-09-21

Saifer, Robert W.

Traversing hoists

With haul-in line

212242, 294 81SF, B66C 1316

Patent

active

043502547

ABSTRACT:
A lifting apparatus includes two lifting hoists which are respectively associated with two cables. These cables are lowered in parallel with one another, and are connected to a fixed part of a rotating apparatus. The rotating part of this apparatus moves along longitudinal rails of a secondary frame which is attached to the carrier of the container. The lifting operation may be performed as the container's gravity center reaches the perpendicular axis of the center of a quadilateral defined by four points established by an electronic device which detects the various loads within the lifting cables and is adapted to actuate appropriate hydraulic means to maintain a load differential between the cables below a predetermined value. In this respect, the apparatus balances the containers to be lifted before lifting them.

REFERENCES:
patent: 3498473 (1970-03-01), Spaulding et al.
patent: 3558176 (1971-01-01), Fathauer et al.
patent: 3598440 (1969-03-01), Ramsden
patent: 3675960 (1972-07-01), Mangold
patent: 3828940 (1974-08-01), Cooper

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