초록 ▼

There are provided an electric motor driven by (electric) power from a battery; a hydraulic pump driven by the electric motor; a hydraulic motor driven by operating oil discharged from the hydraulic pump; an operating member for performing a predetermined operation by the drive of the hydraulic moto

There are provided an electric motor driven by (electric) power from a battery; a hydraulic pump driven by the electric motor; a hydraulic motor driven by operating oil discharged from the hydraulic pump; an operating member for performing a predetermined operation by the drive of the hydraulic motor; and operating levers for operating the operating member by switching a flow and a shut-off of the operating oil discharged from the hydraulic pump. The operating levers are operatable between a neutral position at which the hydraulic motor stops operation and an operating position at which the hydraulic motor operates. An accel-trimmer is provided to adjust the supply amount of power from the battery to the electric motor in the state where the operating levers are operated to the operating position.

대표청구항 ▼

[ We claim:] [1.] A battery-driven hydraulic excavator comprising:a lower carriage;an upper rotating body provided rotatably around a vertical shaft on the lower carriage;a battery;an electric motor driven by power from said battery;a hydraulic pump driven by said electric motor, said hydraulic pump

[ We claim:] [1.] A battery-driven hydraulic excavator comprising:a lower carriage;an upper rotating body provided rotatably around a vertical shaft on the lower carriage;a battery;an electric motor driven by power from said battery;a hydraulic pump driven by said electric motor, said hydraulic pump, said electric motor and said battery being mounted interiorly of said upper rotating body;an actuator driven by operating oil discharged from said hydraulic pump;an operating member operated by the drive of said actuator; andoperating levers for operating said operating members through said actuator by switching a flow and a shut-off of the operating oil discharged from said hydraulic pump, said operating levers and said operating member being mounted on said upper rotating body.