Title:
【発明の名称】耕耘装置の昇降制御装置
Document Type and Number:
Japanese Patent JP2781316
Kind Code:
B2
Abstract:
PURPOSE:To make it possible to prevent a tilling device from sinking even if field is muddy and prevent excess load to engine and to enable tilling depth control even in the case where hardness of soil is changed in the field. CONSTITUTION:Difference and changing ratio between standard number of revolution of engine 10 indicated when a tiller 2 is lowered to a prescribed tilling depth and number of revolutions of engine changed according to tilling operation are operated, and the value of the prescribed tilling depth is corrected so that the difference of number of revolutions may become small based on characteristics preliminarily determined from the difference and the changing ratio and when the number of revolutions of engine exceeding the standard number of revolutions continues for a prescribed time or longer halfway during tilling operation, data correcting operation is stopped and then, when change of number of revolutions of engine becomes small, this number of revolutions of engine is reset as the standard number of revolutions.
Inventors:
Toshiya Fukumoto
Satoshi Iida
Satoshi Iida
Application Number:
JP30069192A
Publication Date:
July 30, 1998
Filing Date:
November 11, 1992
Export Citation:
Assignee:
Kubota Corporation
International Classes:
G05D1/08; A01B63/114; (IPC1-7): A01B63/114; G05D1/08
Domestic Patent References:
| JP63123305A | ||||
| JP59143503A | ||||
| JP443914U |
Attorney, Agent or Firm:
Kitamura Osamu