Title:
STRUCTURE FOR CONTROLLING POSTURE OF GROUND-WORKING APPARATUS OF WORKING VEHICLE
Document Type and Number:
Japanese Patent JP2637650
Kind Code:
B2
Abstract:
PURPOSE: To prevent the defective transplantation of seedling, etc., by a seedling transplantation apparatus, etc., by slightly changing the control sensitivity upon the generation of hunting phenomenon and activating an alarming means when hunting phenomenon remains even after the lowering of the sensitivity.
CONSTITUTION: When the signal of the vertical motion of a seedling transplantation apparatus 3, etc., detected by a position sensor 19 continues more than a preset time NT at a frequency shorter than a preset level, a sensitivity controlling means slightly changes the control sensitivity within a sensitivity range preset by a sensitivity-setting means. The control sensitivity is maintained by a sensitivity maintaining means when the vertical motion of the seedling transplantation apparatus, etc., is eliminated by the above operation. When the vertical motion of the seedling transplantation apparatus, etc., remains even after the change of the sensitivity, an alarming lamp 10 and an alarming buzzer 14 are activated.
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Inventors:
MIZOTA HIDEAKI
Application Number:
JP26914391A
Publication Date:
August 06, 1997
Filing Date:
October 17, 1991
Export Citation:
Assignee:
KUBOTA KK
International Classes:
A01B63/10; G05D1/08; A01C11/02; (IPC1-7): A01B63/10; A01C11/02; G05D1/08
Domestic Patent References:
| JP63296613A | ||||
| JP358702A | ||||
| JP6286810U | ||||
| JP54825U | ||||
| JP61148112U |
Attorney, Agent or Firm:
Kitamura Osamu