| 摘要 |
PURPOSE:To keep the landing pressure of each portion of crawler uniform by a method in which the landing pressure reaction of crawler and the inclined angle of a vehicle body are detected by sensors, and on the basis of the detected values, correcting operation control signals for blade are obtained by a microcomputer for making the corrective operation of the blade. CONSTITUTION:Sensors 15-19 to detect the landing pressure reaction of crawler and the inclined angle of car body are provided to the front and behind portions of left and right-handed crawlers of a bulldozer. Each of detected values is put in a micro computer 20A, and the control valves V1 and V2 of the lift cylinder 11 and tilt cylinder 12 of a blade are driven by the output of a control system 20B. When the landing pressure of each portion of the crawlers is ill-balanced, the extension amounts of the control valves V1 and V2 are automatically controlled on the basis of each landing pressure reaction, the corrective operation of the blade is made automatically, and the landing pressure of each portion of the crawlers is equalized. |
