Mobile crane
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United States of America Patent
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Dec 26, 2017
Issued Date -
N/A
app pub date -
Jul 7, 2016
filing date -
Jul 14, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A mobile crane includes: a crane main-body having a lower traveling body and an upper swing body; and a counterweight carrier. The counterweight carrier has a wheel, a wheel driving device, and a steering device. At least one of the crane main-body and the counterweight carrier has a controller which causes the steering device to steer the wheel. The controller causes the steering device to steer the wheel by a steering operation which requires a smaller steering amount of the wheel between one steering operation in which the steering device swivels the wheel in one direction to make the orientation of the wheel correspond to the front-back direction of the lower traveling body and another steering operation in which the steering device swivels the wheel in a direction opposite to the one direction to make the orientation of the wheel correspond to the front-back direction.
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