Title:
ELECTRIC MOTOR FOR CONSTRUCTION MACHINERY, AND COOLING CIRCUIT FOR ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2011/158685
Kind Code:
A1
Abstract:
A cooling circuit (2) for an electric motor (1) for construction machinery is provided with: a circulation passage (22) which includes a shaft-side passage provided on a rotor shaft in the electric motor (1); a pump (21) which provides cooling liquid to the circulation passage; a first filter (24) which is provided between the pump (21) and the shaft-side passage in the circulation passage (22); a first by-pass passage (25) which by-passes the upstream side and the downstream side of the first filter (24); and a first relief valve (26) which is provided in the first by-pass passage (25).
Inventors:
MATSUKI Yasuhiko (Development Division 3-25-1, Shinomiya, Hiratsuka-sh, Kanagawa 55, 〒2548555, JP)
松木 康彦 (〒55 神奈川県平塚市四之宮３－２５－１ 株式会社小松製作所 開発本部内 Kanagawa, 〒2548555, JP)
松木 康彦 (〒55 神奈川県平塚市四之宮３－２５－１ 株式会社小松製作所 開発本部内 Kanagawa, 〒2548555, JP)
Application Number:
JP2011/062973
Publication Date:
December 22, 2011
Filing Date:
June 06, 2011
Export Citation:
Assignee:
KOMATSU LTD. (2-3-6, Akasaka Minato-k, Tokyo 14, 〒1078414, JP)
株式会社小松製作所 (〒14 東京都港区赤坂２丁目３番６号 Tokyo, 〒1078414, JP)
MATSUKI Yasuhiko (Development Division 3-25-1, Shinomiya, Hiratsuka-sh, Kanagawa 55, 〒2548555, JP)
株式会社小松製作所 (〒14 東京都港区赤坂２丁目３番６号 Tokyo, 〒1078414, JP)
MATSUKI Yasuhiko (Development Division 3-25-1, Shinomiya, Hiratsuka-sh, Kanagawa 55, 〒2548555, JP)
International Classes:
H02K9/19; H02K5/20; H02K9/26
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (3rd floor, Ogikubo TM building 26-13, Ogikubo 5-chome, Suginami-k, Tokyo 51, 〒1670051, JP)
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Claims: