Control system of an excavator

Details Control system of an excavator Control system of an excavator

1996-12-10

1998-01-06

Melius, Terry Lee

Earth working

Automatic power control

Land leveller type

37348, 414699, 36442407, E02F 332

Patent

active

057044295

ABSTRACT:
A control system of an excavator. The excavator includes a lower running body, an upper pivoting body, a working device having a plurality of links attached to the upper pivoting body, a pivoting device, and a running device, actuators for actuating the working device, the pivoting device, and the running device, hydraulic control valves for controlling quantities of hydraulic fluid supplied to the actuators, sensors for detecting relative angular positions of the links, and a control system. The control system includes a pair of manipulating devices each of which can be manipulated in at least three directions so as to output electrical signals proportional to deviated amounts in selected directions among the directions from a neutral position thereof, a switch board on which a plurality of function switch are installed, for outputting a signal in accordance with a selected function and displaying the selected function, a control section for controlling quantifies of hydraulic fluid supplied to the hydraulic cylinders and the hydraulic motors by receiving signals from the manipulating device, the switch board, and the angle detecting sensors and transferring the signals to the hydraulic control valves.

REFERENCES:
patent: 4888890 (1989-12-01), Studebaker et al.
patent: 5160239 (1992-11-01), Allen et al.
patent: 5356259 (1994-10-01), Hanamoto et al.

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