(19)
(11) EP 1 138 569 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.05.2006 Bulletin 2006/21

(43) Date of publication A2:
04.10.2001 Bulletin 2001/40

(21) Application number: 01107692.4

(22) Date of filing: 28.03.2001
(51) International Patent Classification (IPC): 
B61F 7/00(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 28.03.2000 JP 2000089402

(71) Applicants:
  • RAILWAY TECHNICAL RESEARCH INSTITUTE
    Kokubunji-shi Tokyo (JP)
  • JAPAN RAILWAY CONSTRUCTION PUBLIC CORPORATION
    Tokyo-To (JP)
  • Nippon Sharyo, Ltd.
    Nagoya-shi, Aichi-ken (JP)
  • FUJI JUKOGYO KABUSHIKI KAISHA
    Tokyo-To (JP)

(72) Inventors:
  • Okamoto, Isao, Railway Tech. Research Institute
    Kokubunji-shi, Tokyo-to (JP)
  • Tokuda, Noriaki, Railway Tech. Research Institute
    Kokubunji-shi, Tokyo-to (JP)
  • Toyooka, Tomohiro, Railway Tech. Res. Institute
    Kokubunji-shi, Tokyo-to (JP)
  • Matsuoka, Kensaku
    1-10-14-5, Kita-Ueno, Taito-ku, Tokyo-to (JP)
  • Okimatsu, Kunimasa
    Nagoya-shi, Aichi-ken (JP)
  • Ito, Tomohiro
    Nagoya-shi, Aichi-ken (JP)
  • Minowa, Yukio
    Shinjuku-ku, Tokyo-to (JP)

(74) Representative: Sajda, Wolf E. et al
MEISSNER, BOLTE & PARTNER Postfach 86 06 24
81633 München
81633 München (DE)

   


(54) Variable-wheel-gage bogie for rolling stock


(57) A variable-wheel-gage bogie has axles (24), journal box beams (29) bearing the body weight of a wheeled vehicle, journal boxes (50) axially slidably fitted in the journal box beams (29), respectively, axle sleeves (30) put on each axle (24) and supported in journal bearings (51) on the journal boxes (50), respectively, wheels (36) fixedly joined to the axle sleeves (30), respectively, and locking mechanisms (60) for locking the wheels (36) so as to be axially immovable. The locking mechanisms (60) are disengaged by unlocking rails (73) extended along body support rails (70) that bear the body weight of a wheeled vehicle and are engaged by locking rails (74) extended along the body support rails (70). The locking mechanisms (60) can be operated in a state here the journal box beams (29) are supported on the body support rails (70) and the axle (24) is not loaded. Thus, the locking mechanisms (60) can be surely engaged to lock the wheels (36) so as to be axially immovable and can be surely disengaged to permit the axial movement of the wheels (36) for wheel-back-gage change.







Search report