Blade control device

Details Blade control device Blade control device

1982-10-26

1985-08-27

Stouffer, Richard T.

Earth working

Automatic power control

Land leveller type

318591, E02F 376, E02F 385

Patent

active

045372594

ABSTRACT:
A blade control device comprises a change-over switch for providing light receiving position deviation signal sent out from a light receiving device into a light receiving device control system as a command value, and a device for measuring the change in the height of the light receiving device, whereby a topographic survey is conducted based on the height change of the light receiving device.
The blade control device may further be provided with a second change-over switch for providing the command value outputted from a manual command value setter during a manual operation into the light receiving device control system, whereby returning the blade to a previous position is carried out in accordance with the operation of the second change-over switch.
Further, the blade position can be determined by providing an adder for adding light receiving position deviation and the operation stroke of the lift cylinder at a light receiving time and a detector for detecting the deviation between the added result by the adder and the operation stroke of the lift cylinder at the current time, and by reducing the deviation to zero.

REFERENCES:
patent: 3887012 (1975-06-01), Scholl et al.
patent: 4162708 (1979-07-01), Johnson
patent: 4221266 (1980-09-01), Fardal
patent: 4273196 (1981-06-01), Etsusaki et al.
patent: 4343365 (1982-08-01), Rajagopal et al.

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