Invention Grant
- Patent Title: Electric construction machine
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Application No.: US17272980Application Date: 2020-01-29
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Publication No.: US11542680B2Publication Date: 2023-01-03
- Inventor: Seiichi Kihara , Kiwamu Takahashi , Takeshi Ishii
- Applicant: Hitachi Construction Machinery Tierra Co., Ltd.
- Applicant Address: JP Koka
- Assignee: Hitachi Construction Machinery Tierra Co., Ltd.
- Current Assignee: Hitachi Construction Machinery Tierra Co., Ltd.
- Current Assignee Address: JP Koka
- Agency: Crowell & Moring LLP
- Priority: JPJP2019-045483 20190313
- International Application: PCT/JP2020/003164 WO 20200129
- International Announcement: WO2020/183959 WO 20200917
- Main IPC: E02F9/08
- IPC: E02F9/08 ; E02F9/18

Abstract:
An electric hydraulic excavator (1) includes an automotive lower traveling structure (2) and
an upper revolving structure (3) mounted on the lower traveling structure (2) to be capable of revolving thereto. The upper revolving structure (3) includes a revolving frame (5) as a base, a counterweight (13) disposed on a rear side of the revolving frame (5), and an electric power source (9) that is positioned on a front side of the counterweight (13) to be mounted on the revolving frame (5) and is power-fed from an external electric current source. The counterweight (13) is provided with a cable insertion hole (16) as disposed therein. A power feeding cable (12) is inserted in the cable insertion hole (16) for connection between the external electric current source and the electric power source (9).
an upper revolving structure (3) mounted on the lower traveling structure (2) to be capable of revolving thereto. The upper revolving structure (3) includes a revolving frame (5) as a base, a counterweight (13) disposed on a rear side of the revolving frame (5), and an electric power source (9) that is positioned on a front side of the counterweight (13) to be mounted on the revolving frame (5) and is power-fed from an external electric current source. The counterweight (13) is provided with a cable insertion hole (16) as disposed therein. A power feeding cable (12) is inserted in the cable insertion hole (16) for connection between the external electric current source and the electric power source (9).
Public/Granted literature
- US20210254305A1 Electric Construction Machine Public/Granted day:2021-08-19
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