Method for controlling the depth of dragline excavating operatio

Details Method for controlling the depth of dragline excavating operatio Method for controlling the depth of dragline excavating operatio

1984-11-06

1985-09-24

Eickholt, E. H.

Excavating

Processes

37116, 37DIG1, 414699, 364433, 364579, E02F 346

Patent

active

045426007

ABSTRACT:
The operation of a dragline machine in digging below the earth's surface is monitored to provide measurements of the variations in pull cable length, lift cable length, and main boom inclination. From these measurements, the angle of inclination of the pull cable below the horizontal is determined. The depth of the excavation is then determined from the length of the pull cable and its inclination.

REFERENCES:
patent: 3460278 (1969-08-01), Pesavento et al.
patent: 3636325 (1972-01-01), Chytil
patent: 3934126 (1976-01-01), Zalesov et al.
patent: 4038765 (1977-08-01), Sankey et al.
patent: 4332517 (1982-06-01), Igarashi et al.
patent: 4368521 (1983-01-01), Sholes, II
patent: 4370713 (1983-01-01), McCoy, Jr.

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