Carbody support device and railway vehicle

Patent metadata

Field	Value
Publication number	US-10464581-B2
Application number	US-201815892808-A
Country	US
Kind code	B2
Filing date	Feb 9, 2018
Priority date	Jul 13, 2012
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A carbody support device of a railway vehicle, including support mechanisms installed between a front bogie and a carbody and between a rear bogie and the carbody in a traveling direction, and supporting the carbody against the respective bogies. The support mechanisms regulate both the front bogie and the rear bogie inclining in the same vehicle width direction with respect to the carbody when the railway vehicle travels through a curve, while the support mechanisms permit the front bogie and the rear bogie inclining in different vehicle width directions.

First claim

The invention claimed is:

1. A carbody support device of a railway vehicle comprising support mechanisms respectively installed between a front bogie and a carbody and between a rear bogie and the carbody in a traveling direction, and supporting the carbody against the respective bogies,
wherein the support mechanisms include:
support members extending in vehicle longitudinal directions of the carbody; and
lever members configured to connect between respective both ends of the support member in the vehicle longitudinal directions and the same ends in width directions of the front and rear bogies, and configured to be pivotable,
wherein the lever members includes:
a front side lever member having a bent shape, one end of the front side lever member provided corresponding to the front bogie and the other end connected with a front end of the support member in the vehicle longitudinal directions, and the front side lever member configured to be pivotable about a fulcrum located between the one end and the other end;
a rear side lever member having a bent shape, one end of the rear side lever member provided corresponding to the rear bogie and the other end connected with a rear end of the support member in the vehicle longitudinal directions, and the rear side lever member configured to be pivotable about a fulcrum located between the one end and the other end; and
elastic members, respectively provided between the one end of the front side lever member and the front bogie, and between the one end of the rear side lever member and the rear bogie, for applying a biasing force from each of the lever members to each of the bogies,
wherein,
in a state that one of the front and rear bogies is inclined with respect to the carbody, a force caused by one of the lever members related to the one of bogies pivoting about the fulcrum acts on the support members, the force makes the other of the lever members related to the other of bogies pivot about the fulcrum, whereby the support mechanisms permit the other of bogies inclining to a different direction with respect to the inclination of the one of bogies in the vehicle width directions; and
in a state that the front and rear bogies are inclined in the same vehicle width direction, the front side lever member and the rear side lever member pivot about the fulcrums respectively, whereby the support mechanisms regulate both the front bogie and the rear bogie inclining in the same vehicle width direction with respect to the carbody.

2. The carbody support device of claim 1 , wherein the front bogie and the rear bogie are indirect-mounting bogies, each having a bolster, and a secondary suspension between a bogie frame and the bolster, and
wherein each of the fulcrums of the front side lever member and the rear side lever member is supported by the carbody.

3. The carbody support device of claim 1 , wherein the front bogie and the rear bogie are direct mounting bogies, each having a bolster, and a secondary suspension between the carbody and the bolster, and each of the fulcrums of the front side lever member and the rear side lever member is supported by the bolster, and
the carbody support device further comprising an absorber mechanism provided between each of the other ends of the front side lever member and the rear side lever member, and the support member, for absorbing a vertical displacement between the bolster and the carbody.

4. The carbody support device of claim 1 , wherein the front bogie and the rear bogie are bolsterless bogies, and
the carbody support device further comprising:
a front side coupling support mechanism, in the front bogie side, coupling each of the one ends of the pair of front side lever members disposed on both sides in the vehicle width directions to the front bogie, for pivoting each of the front side lever members according to rolling of the front bogie; and
a rear side coupling support mechanism, in the rear bogie side, coupling each of the one ends of the pair of rear side lever members disposed on both sides in the vehicle width directions to the rear bogie, for pivoting each of the rear side lever members according to rolling of the rear bogie.

5. The carbody support device of claim 1 , wherein the support member is comprised of a single bar steel member.

6. The carbody support device of claim 1 , wherein the support member includes a front side hydraulic cylinder, a rear side hydraulic cylinder, and a confinement piping communicating between the hydraulic cylinders and confining incompressible fluid therein.

7. A railway vehicle comprising the carbody support device of claim 1 .

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Sato Yoshi
• Taga Yukitaka
• Nakao Shunichi
• Isomura Kazuo
• Tamaki Makoto
• Shirakawa Junichi
• Murata Koichi

Classifications

• B61F5/24

  Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes · CPC title

• B61F5/127

  with fluid as a damping medium · CPC title

• B61F5/10 Primary

  incorporating fluid springs · CPC title

• B61F5/38 Primary

  Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles · CPC title

• B61F5/245

  by active damping, i.e. with means to vary the damping characteristics in accordance with track or vehicle induced reactions, especially in high speed mode · CPC title