Working vehicle
AssigneeTadano Ltd.
InventorsMikio Hazebayashi, Kimihiko Terata
Life of this patent
Estimating the term…
Abstract
There is provided a working vehicle that can continuously drive a working machine by electric power to improve the silence. The hydraulic pump is driven by the power of the motor generator that is driven by the electric power of an external power supply supplied via the power cable. By this means, when a crane operation is performed by the crane apparatus in a workplace with an external power supply, it is possible to continuously drive the hydraulic pump by the power of the motor generator, and therefore to continuously perform the crane operation of the crane apparatus, improving the silence.
Claims4
A working vehicle comprising:
- a mobile vehicle body;
- a working apparatus provided in the vehicle body and configured to perform a predetermined operation;
- an engine configured to be able to output power used to move the mobile vehicle body and to drive the working apparatus;
- an electric motor configured to be able to output power used to move the mobile vehicle body and to drive the working apparatus;
- a hydraulic pump configured to generate a hydraulic pressure to drive the working apparatus by one of or both the power of the engine and the power of the electric motor;
- an external electric power transmission device configured to transfer electric power of an external power supply to the electric motor;
- and
- a hydraulic pump drive unit configured to drive the hydraulic pump by the power of the electric motor that is driven by the electric power transferred from the external electric power transmission device;
- a battery configured to be able to supply the electric power to the electric motor;
- and
- a battery power adding device configured to add the electric power of the battery to the electric motor while the hydraulic pump is driven by the hydraulic pump drive unit.
Dependencies are inferred from the claim text.