Excavating – Ditcher – Condition responsive
Patent
1994-12-07
1996-07-16
Melius, Terry Lee
Excavating
Ditcher
Condition responsive
172 45, 36442407, E02F 332
Patent
active
055355323
ABSTRACT:
An excavator control apparatus for shovel-type construction equipment includes an automatic digging control section, a digging load control device, and an operation command correcting device. The shovel-type construction equipment has a boom, an arm and a bucket that are successively and rotatably connected in an operation section. The boom, the arm and the bucket are each connected to at least one cylinder that extends and retracts according to the operation of a lever. The digging load control device permits an automatic digging routine to be executed by controlling the extension and retraction of the cylinder. The digging load control device transmits operation commands to the cylinder to maintain a digging load approximately equal to a set digging load during automatic digging. The operation command correcting device corrects the operation commands transmitted to the cylinder by manual operation of the lever without cancelling the automatic digging routine.
REFERENCES:
patent: 3643828 (1972-02-01), Elliott
patent: 4288196 (1981-09-01), Sutton, II
patent: 4889466 (1989-12-01), Jindai et al.
patent: 5160239 (1992-11-01), Allen et al.
Fujii Satoshi
Ono Tomoaki
Tozawa Shoji
Melius Terry Lee
Pezzuto Robert
Shin Caterpillar Mitsubishi Ltd.
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