RAILROAD VEHICLE DRIVE UNIT

WIPO Patent Application WO/2010/073867

A1

A railroad vehicle drive unit (12) is provided with a reduction gear housing (13), an input-side rotating member (14), a reduction gear mechanism (15), fixation members (24, 25) which are arranged within the reduction gear housing (13) and are connected and fixed to a vehicle body, and a lubricating oil circulating mechanism which circulates in the drive unit a lubricating oil.  The lubricating oil circulating mechanism is provided with an axis oil path (14a) which extends within the input-side rotating member (14) in the axis direction, lubricating oil supply openings (14b-14e) which extend from the axis oil path (14a) to the outer-diameter surface of the input-side rotating member (14), a lubricating oil discharge opening (25c) which is provided in the fixation member (25), and a circulation oil path (34) which connects the lubricating oil discharge opening (25c) and the axis oil path (14a) and recirculates the lubricating oil, which has been discharged from the lubricating oil discharge opening (25c), to the axis oil path (14a).

MIKI DAISUKE (JP)
KATAOKA YUKIHIRO (JP)
YAMADA MASAHIRO (JP)
ADACHI TAKAYA (JP)

PCT/JP2009/069911

July 01, 2010

November 26, 2009

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NTN TOYO BEARING CO LTD (JP)
MIKI DAISUKE (JP)
KATAOKA YUKIHIRO (JP)
YAMADA MASAHIRO (JP)
ADACHI TAKAYA (JP)

B61C9/46; F16H1/32; F16H57/04

JP2008275094A	2008-11-13
JP2006064128A	2006-03-09
JP2007230508A	2007-09-13
JPH0712135A	1995-01-17
JP2008002659A	2008-01-10
JP2006029393A	2006-02-02
JP2006226499A	2006-08-31
JP2006336702A	2006-12-14
JPS6220242U	1987-02-06

ITOH, Hidehiko et al. (JP)
Hidehiko Ito (JP)

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