Blade control system for a bulldozer
AssigneeKomatsu Ltd.
InventorsHiroshi Nakagami, Shigenori Matsushita, Shigeru Yamamoto
Life of this patent
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Abstract
A blade control system for a bulldozer, comprising: (a) a pitch angle detector for detecting a pitch angle of a vehicle body when the vehicle body inclines back and forth; (b) an actual tractive force detector for detecting an actual tractive force of the vehicle body; and (c) a controller for correcting the actual tractive force detected by the actual tractive force detector according to the pitch angle detected by the pitch angle detector and for controlling the blade to be lifted or lowered such that the corrected actual tractive force becomes equal to a target tractive force.
Claims7
A blade control system for a bulldozer, comprising:
- (a) a pitch angle detecting means for detecting a pitch angle of a vehicle body when the vehicle body inclines back and forth;
- (b) an actual tractive force detecting means for detecting an actual tractive force of the vehicle body;
- and
- (c) a controlling means for correcting the actual tractive force detected by the actual tractive force detecting means according to the pitch angle detected by the pitch angle detecting means and for controlling a blade to be lifted or lowered such that the corrected actual tractive force becomes equal to a target tractive force, the corrected actual tractive force eliminating any running resistance caused by the pitch angle detected by the pitch angle detecting means which exists upon an inclining back and forth of the vehicle body wherein the blade lifting/lowering control by the controlling means is performed in the automatic driving mode on condition that a transmission is placed in first forward speed or intermediate forward speed and the blade is not in manual operation.
Dependencies are inferred from the claim text.