Construction machine
AssigneeHitachi Construction Machinery Co., Ltd.
InventorKatsumasa Uji
Life of this patent
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AssigneeHitachi Construction Machinery Co., Ltd.
InventorKatsumasa Uji
Estimating the term…
A construction machine is provided which includes a plurality of hydraulic actuators, a hydraulic pump that discharges pressurized fluid for driving the hydraulic actuators, an engine that drives the hydraulic pump, a plurality of operation lever devices that operate the corresponding hydraulic actuators, a key switch that starts the engine, a speed sensor that senses a rotational speed of the engine, a plurality of operation sensors that sense operation of the corresponding operation lever devices, and a controller that drives, in response to operation of the operation lever devices, the corresponding hydraulic actuators. The controller decides, on the basis of signals from the key switch, the speed sensor, and the plurality of operation sensors, whether operation of the operation lever device is first time operation after start of the engine, and limits, in a case where the operation of the operation lever device is first time operation after start of the engine, the action speed of the hydraulic actuator.
A construction machine, comprising:
Dependencies are inferred from the claim text.