Automatic control systems for rippers for use in civil works

Details Automatic control systems for rippers for use in civil works Automatic control systems for rippers for use in civil works

1976-06-28

1977-12-13

Stouffer, Richard T.

Earth working

Automatic power control

Draft responsive

172 12, A01B 63112

Patent

active

040625397

ABSTRACT:
The control system is provided with a detector that detects whether the ripper is operated in a piercing operating mode or a digging operating mode. In the piercing operating mode the angle of the shank is adjusted to a preset piercing angle, while in the digging operating mode the shank angle is adjusted to a preset digging angle thereby effecting optimum piercing and digging operations. Limit switches for detecting upper and lower limit positions of the shank are provided for raising and lowering the shank between these limit positions while adjusting the shank angle. Further an overload detector is provided for raising the shank when its load exceeds a predetermined load and lowering the shank when the load decreases below it. A manual preference control device also provided for enabling manual control during automatic control.

REFERENCES:
patent: 2913878 (1959-11-01), Rue
patent: 3246701 (1966-04-01), Schulz
patent: 3497014 (1970-02-01), Ask
patent: 3658133 (1972-04-01), Sweet et al.
patent: 3731746 (1973-05-01), Walberg
patent: 3860074 (1975-01-01), Maistrelli
patent: 3961670 (1976-06-01), Rivinius

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