Title:
BRAKE CONTROLLER OF TRACTOR
Document Type and Number:
Japanese Patent JP3496340
Kind Code:
B2
Abstract:
PURPOSE: In the tractor which automatically brakes a rear wheel of the inner side of cornering with the operation of steering when cornering, to prevent the tractor from roughening a field because it digs the ground just after cornering.
CONSTITUTION: When it is judged by a steering angle sensor 35 that a tractor 11 is in the area of cornering, if the tractor 11 is in a state of four-wheel driving and a predetermined time (about 1.2sec) does not elapse after a solenoid for increasing the speed of the front wheel, the solenoid for increasing the speed of the front wheel is turned on to corner the tractor 11 in a state in which the front wheel is being increased and four wheels are also driven. In addition, when the present over-run ratio (number of revolution of the front wheel/number of revolution of the rear wheel) is less than a standard over-run ratio, the solenoid for increasing the speed of the front wheel is also turned on to corner the tractor 11 in a state in which the front wheel is being increased and four wheels are driven. Next, just after the tractor 11 begins cornering, a braking pressure is changed to a low pressure and a braking solenoid is turned on, thereby braking the rear wheel with a weak braking force to prevent roughening a field.
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Inventors:
Hiroki Ono
Fumiaki Nishikawa
Fumiaki Nishikawa
Application Number:
JP15802395A
Publication Date:
February 09, 2004
Filing Date:
June 23, 1995
Export Citation:
Assignee:
Iseki Agricultural Machinery Co., Ltd.
International Classes:
B60T7/12; A01B69/00; B62D11/08; B62D51/06; (IPC1-7): B60T7/12; A01B69/00; B62D11/08
Domestic Patent References:
| JP1215657A |
Attorney, Agent or Firm:
Kokichi Hayashi