Hydraulic system and forklift with the same
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United States of America Patent
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N/A
Issued Date -
Apr 6, 2006
app pub date -
Sep 12, 2005
filing date -
Sep 10, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The hydraulic system includes a hydraulic pump for supplying hydraulic oil to a hydraulic actuator, an electric motor for driving the hydraulic pump, hydraulic pipes provided between the hydraulic actuator and a tank, a hydraulic motor provided in one of the hydraulic pipes for recovering the hydraulic oil and adapted to be driven on receipt of the hydraulic oil which has been recovered from the hydraulic actuator, a drive transmitting device connected to both the hydraulic motor and the electric motor for transmitting driving torque from the hydraulic motor to the electric motor, and a control unit which conducts regenerative control of the electric motor according to rotation number of the electric motor, when the electric motor is driven by the hydraulic motor.
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