Split drive system for dragline with power interlock

Details Split drive system for dragline with power interlock Split drive system for dragline with power interlock

1977-09-23

1979-03-13

Blix, Trygve M.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

37116, 192 325, B66D 126

Patent

active

041438566

ABSTRACT:
Separate torque converters are selectively clutched to the hoist and drag drums of a dragline machine with a selectively engageable clutch providing a power interlock of the output of both torque converters to either one of the drums as desired. Another clutch may be engaged to interlock the two drums together for joint operation by one of the torque converters. Dragline holdback may be achieved by the drag drum brakes, the drag drum converter or the drum interlock thereby providing the operator with considerable flexibility in controlling the path of the drag bucket during hoisting.

REFERENCES:
patent: 1555906 (1925-10-01), Banke
patent: 2603893 (1952-07-01), Trask
patent: 3221896 (1965-12-01), Grall et al.
patent: 3541596 (1970-11-01), Larson
patent: 3578787 (1971-05-01), Brickett et al.
patent: 3944034 (1976-03-01), Ahlen

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