Title:
ELECTRIC WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2012/011530
Kind Code:
A1
Abstract:
Provided is an electric work vehicle such that it is possible to shorten the length of a high-tension cable for connecting an electric motor included within a slewing motor to an inverter for controlling the electric motor. A region on a main frame (1) is divided into three regions consisting of a center region (S), a first side region (L), and a second side region (R), by means of a first vertical rib (1a) and a second vertical rib (1b). A slewing hydraulic motor (8) and a slew assist electric motor (21), which constitute the slewing motor, are disposed in the center region (S). An inverter (22) for controlling the slew assist electric motor (21) is positioned near the second vertical rib (1b) within a second tool chamber (13) provided in the second side region (R). In other words, the inverter (22) is provided at a position near the slew assist electric motor (21).
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Inventors:
OKUMURA Shinya (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
奥村 信也 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
OJIMA Mitsugu (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
小島 貢 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
OTA Yasunori (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
奥村 信也 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
OJIMA Mitsugu (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
小島 貢 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
OTA Yasunori (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
Application Number:
JP2011/066588
Publication Date:
January 26, 2012
Filing Date:
July 21, 2011
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (5-1 Koraku 2-chome, Bunkyo-ku Tokyo, 63, 〒1128563, JP)
日立建機株式会社 (〒63 東京都文京区後楽二丁目５番１号 Tokyo, 〒1128563, JP)
OKUMURA Shinya (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
奥村 信也 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
OJIMA Mitsugu (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
小島 貢 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
日立建機株式会社 (〒63 東京都文京区後楽二丁目５番１号 Tokyo, 〒1128563, JP)
OKUMURA Shinya (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
奥村 信也 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
OJIMA Mitsugu (Hitachi Construction Machinery Co. Ltd., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
小島 貢 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
International Classes:
E02F9/08; E02F9/20
Attorney, Agent or Firm:
The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (Kashiwaya Bldg, 6-13 Nishishinbashi 1-chom, Minato-ku Tokyo 03, 〒1050003, JP)
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