Excavating – Rotary digger
Patent
1975-07-17
1976-08-17
Eickholt, E. H.
Excavating
Rotary digger
37190, 37 95, E02F 324
Patent
active
039745805
ABSTRACT:
An excavating and loading system including an excavating wheel assembly at the front thereof and a plurality of conveyors for conveying material from the excavating wheel assembly upwardly and rearwardly. The excavating wheel assembly includes a plurality of excavating wheels having an overall width in excess of that of the following portion of the system. A supporting and housing apparatus rotatably supports the excavating wheel assembly and includes portions which extend between adjacent excavating wheels. Electric motors are connected to drive shafts which extend to the excavating wheel assembly through the portions of the supporting and housing apparatus that extend between adjacent excavating wheels. A right angle gearbox is connected to each drive shaft and powers the excavating wheel through a planetary speed reducer. Apparatus is provided for raising and lowering the excavating height of the excavating wheel assembly to thereby vary the grade of the excavation. The excavating wheel is provided with means for positively moving the walls of a plurality of buckets between digging and dumping positions.
REFERENCES:
patent: 818215 (1906-04-01), Anderson
patent: 853985 (1907-05-01), Linga
patent: 2622351 (1952-12-01), Walters
patent: 2762141 (1956-09-01), Le Tourneau
patent: 3091874 (1963-06-01), Wuigk
patent: 3157438 (1964-11-01), Lundquist
patent: 3290096 (1966-12-01), Stalker
patent: 3487565 (1970-01-01), Grandin
patent: 3500565 (1970-03-01), Smith
patent: 3712679 (1973-01-01), Amoroso
Eickholt E. H.
Unit Rig & Equipment Co.
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