A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ELECTRICALLY-DRIVEN WORK MACHINE
To provide an electrically-driven work machine that suppresses an action of connecting a power supply cable from an external power supply to a machine that is being driven and prevents arc discharge even when the power supply cable is connected.SOLUTION: An electrically-driven hydraulic excavator 1 comprising an electric motor 7 using a commercial power supply 5 and a battery 62 as a driving power source, and a hydraulic actuator using a hydraulic pump 113 driven by the electric motor 7 as a hydraulic source, has: a first power supply mode in which the electric motor 7 is driven while continuing to charge the battery 62 from the commercial power supply 5; and a second power supply mode in which the electric motor 7 is driven only by the battery 62. When a power supply cable 51 for supplying power to the commercial power supply 5 is connected to a power supply port and a rotation of the electric motor 7 is stopped, the second power supply mode is shifted to the first power supply mode.SELECTED DRAWING: Figure 4
【課題】駆動中の本機に外部電源からの給電ケーブルを接続する行為を抑止し、仮に給電ケーブルを接続した場合にもアーク放電が起こることを防止できる電動式作業機械を提供する。【解決手段】商用電源５及びバッテリ６２を駆動電源とする電動モータ７と、電動モータ７によって駆動される油圧ポンプ１１３を油圧源とする油圧アクチュエータとを備える電動式の油圧ショベル１であって、商用電源５からバッテリ６２への充電を継続しながら電動モータ７を駆動させる第１電源モードと、バッテリ６２のみで電動モータ７を駆動させる第２電源モードとを備え、商用電源５を給電するための給電ケーブル５１が給電口に接続され、かつ電動モータ７の回転が停止されている場合に、第２電源モードから第１電源モードに移行する。【選択図】図４
ELECTRICALLY-DRIVEN WORK MACHINE
To provide an electrically-driven work machine that suppresses an action of connecting a power supply cable from an external power supply to a machine that is being driven and prevents arc discharge even when the power supply cable is connected.SOLUTION: An electrically-driven hydraulic excavator 1 comprising an electric motor 7 using a commercial power supply 5 and a battery 62 as a driving power source, and a hydraulic actuator using a hydraulic pump 113 driven by the electric motor 7 as a hydraulic source, has: a first power supply mode in which the electric motor 7 is driven while continuing to charge the battery 62 from the commercial power supply 5; and a second power supply mode in which the electric motor 7 is driven only by the battery 62. When a power supply cable 51 for supplying power to the commercial power supply 5 is connected to a power supply port and a rotation of the electric motor 7 is stopped, the second power supply mode is shifted to the first power supply mode.SELECTED DRAWING: Figure 4
【課題】駆動中の本機に外部電源からの給電ケーブルを接続する行為を抑止し、仮に給電ケーブルを接続した場合にもアーク放電が起こることを防止できる電動式作業機械を提供する。【解決手段】商用電源５及びバッテリ６２を駆動電源とする電動モータ７と、電動モータ７によって駆動される油圧ポンプ１１３を油圧源とする油圧アクチュエータとを備える電動式の油圧ショベル１であって、商用電源５からバッテリ６２への充電を継続しながら電動モータ７を駆動させる第１電源モードと、バッテリ６２のみで電動モータ７を駆動させる第２電源モードとを備え、商用電源５を給電するための給電ケーブル５１が給電口に接続され、かつ電動モータ７の回転が停止されている場合に、第２電源モードから第１電源モードに移行する。【選択図】図４
ELECTRICALLY-DRIVEN WORK MACHINE
電動式作業機械
KANEDA KENSUKE (author) / TERASHIMA JUN (author)
2019-10-31
Patent
Electronic Resource
Japanese
IPC:
E02F
Baggern
,
DREDGING
/
B60L
PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
,
Antrieb von elektrisch angetriebenen Fahrzeugen
/
H02J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
,
Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung