Excavating – Cable-operated
Patent
1995-02-03
1997-02-18
Melius, Terry Lee
Excavating
Cable-operated
37397, 37396, 180 81, 180 85, 74606R, E02F 348
Patent
active
056031742
ABSTRACT:
A dragline comprising a main housing, a bucket hoist mechanism mounted on the housing, a bucket drag mechanism mounted on the main housing, a walking mechanism for moving the main housing over the ground, the walking mechanism including a motor mounted on the main housing, a planetary transmission which is mounted on the main housing and which is driven by the motor, a transmission output shaft driven by the transmission, a walk leg housing connected to the output shaft via an output pinion, a driven gear, and a driven eccentric such that rotation of the output shaft causes walking movement of the walk leg housing, and a shoe fixed to the walk leg housing for engaging the ground during walking movement of the walk leg housing, a boom extending from the main housing, a bucket, a hoist rope extending between the bucket and the bucket hoist mechanism and over the sheave for causing vertical movement of the bucket, and a drag rope extending between the bucket and the bucket drag mechanism for causing horizontal movement of the bucket.
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Huffman Joseph L.
Kallenberger Harvey J.
Beach Thomas A.
Harnischfeger Corporation
Melius Terry Lee
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