Travel controller for work vehicle
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United States of America Patent
Stats
-
Dec 11, 2012
Grant Date -
Mar 10, 2011
app pub date -
Jul 31, 2008
filing date -
Aug 6, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A vehicle 1 used for work at elevated locations comprises a travel body 10, whose front wheels 11a, 11b are drive wheels, a steering cylinder 17, two travel motors 12, a battery B, an inverter IV, a travel operation lever 41, and a steering dial 42. In the vehicle, the steering cylinder 17 drives a steering mechanism 13, which directs the drive wheels 11a, 11b, to change the steering angle of the drive wheels 11a, 11b, and the travel motors 12a, 12b, which receive electric power from the battery B, respectively, drive the drive wheels 11a, 11b. The inverter IV converts DC power from the battery B to AC power, which is supply to the travel motors 12a, 12b to drive the rotation of both the drive motors. The travel operation lever 41 is operated for travel control while the steering dial 42 is operated to steer the travel body 10. The vehicle further comprises a steering control unit 53 and an inverter control unit 51. The steering control unit 53 controls the operation of the steering cylinder 17, so that the steering angle of the drive wheels corresponds to the operation of the steering dial 42, and the inverter control unit 51 controls the operation of the inverter IV to rotate the travel motors 12a, 12b at a speed that corresponds to the operation of the travel operation lever 41.
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