Apparatus for driving work machine
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United States of America Patent
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Nov 29, 2016
Grant Date -
Jan 28, 2016
app pub date -
Apr 2, 2014
filing date -
Apr 11, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a driving device for a working machine, which can drive one or more hydraulic pumps in a large capacity range of as high efficiency as possible. In a driving device for a hydraulic excavator, a controller (41) is provided with a first target delivery-flow-rate setting unit (41a) that computes a first target delivery flow rate of pressure oil, which is to be delivered from at least one of variable displacement hydraulic pumps (2a-2f) to a hydraulic actuator, according to a lever stroke from one of control devices 40a,40b and corresponding one of preset efficiency values set beforehand for the hydraulic pumps.
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