Railcar bogie

Patent metadata

Field	Value
Publication number	US-10875552-B2
Application number	US-201616065852-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Dec 25, 2015
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A railcar bogie includes a wheelset, a bearing rotatably supporting the wheelset, an axle box, and an obstacle deflector. The wheelset includes: an axle and a pair of wheels provided at both car width direction sides of the axle. The axle box includes: an upper axle box element covering the bearing from above; and a lower axle box element fixed to the upper axle box element and covering the bearing from below. The obstacle deflector includes an obstacle deflecting portion and a coupling portion. The obstacle deflecting portion is arranged at one side of the wheel in a car longitudinal direction and, when viewed from the one side in the car longitudinal direction, overlaps the wheel. The coupling portion couples the obstacle deflecting portion to the axle box. The coupling portion of the obstacle deflector is fixed to a receiving seat provided at the upper axle box element.

First claim

The invention claimed is:

1. A railcar bogie comprising:
a wheelset including:
an axle extending in a car width direction, and
a pair of wheels provided at both respective car width direction sides of the axle;

a bearing configured to rotatably support the wheelset;
an axle box including:
an upper axle box element covering the bearing from above the bearing, and
a lower axle box element fixed to the upper axle box element by a fastening member and covering the bearing from below the bearing; and

an obstacle deflector including:
an obstacle deflecting portion arranged at one side of the wheel in a car longitudinal direction and, when viewed from the one side in the car longitudinal direction, the obstacle deflecting portion overlaps at least one wheel, and
a coupling portion configured to couple the obstacle deflecting portion to the axle box, the coupling portion of the obstacle deflector being fixed to only a receiving seat provided at the upper axle box element.

2. The railcar bogie according to claim 1 , wherein the receiving seat is inclined upward with respect to a horizontal surface that the rail car bogie travels on.

3. The railcar bogie according to claim 1 , wherein the receiving seat is provided vertically to a horizontal surface that the rail car bogie travels on.

4. A railcar bogie comprising:
a wheelset including:
an axle extending in a car width direction, and
a pair of wheels provided at both respective car width direction sides of the axle;

a bearing configured to rotatably support the wheelset;
an axle box including:
an upper axle box element covering the bearing from above the bearing, and
a lower axle box element fixed to the upper axle box element by a fastening member and covering the bearing from below the bearing; and

an obstacle deflector including:
an obstacle deflecting portion arranged at one side of the wheel in a car longitudinal direction and, when viewed from the one side in the car longitudinal direction, the obstacle deflecting portion overlaps at least one wheel, and
a coupling portion configured to couple the obstacle deflecting portion to the axle box, the coupling portion of the obstacle deflector being fixed to a receiving seat provided at the upper axle box element, wherein:

when viewed from the car width direction, the receiving seat is provided at a region of the upper axle box element, and
the region is located at the one side of an axle center in the car longitudinal direction and intersecting with a horizontal line extending in the car longitudinal direction through the axle center.

5. A railcar bogie comprising:
a wheelset including:
an axle extending in a car width direction, and
a pair of wheels provided at both respective car width direction sides of the axle;

a bearing configured to rotatably support the wheelset;
an axle box including:
an upper axle box element covering the bearing from above the bearing, and
a lower axle box element fixed to the upper axle box element by a fastening member and covering the bearing from below the bearing;

an obstacle deflector including:
an obstacle deflecting portion arranged at one side of the wheel in a car longitudinal direction and, when viewed from the one side in the car longitudinal direction, the obstacle deflecting portion overlaps at least one wheel, and
a coupling portion configured to couple the obstacle deflecting portion to the axle box, the coupling portion of the obstacle deflector being fixed to a receiving seat provided at the upper axle box element; and

a fastening member fixing the receiving seat and the coupling portion to each other, wherein:
the receiving seat is provided with a fastening surface including a through hole into which the fastening member is inserted; and
the receiving seat is provided at an outer peripheral wall portion of the upper axle box element such that, in a side view, a normal line of the fastening surface intersects with a vertical line passing through the axle center.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Taga Yukitaka
• Kounoike Fumikazu
• Sano Yukihiro
• Ono Takaya

Classifications

• B61F19/02 Primary

  Wheel guards · CPC title

• B61F5/526

  comprising noise reducing devices · CPC title

• B61F5/30

  Axle-boxes mounted for movement under spring control in vehicle or bogie underframes {(B61F5/36 takes precedence over B61F5/305 - B61F5/34)} · CPC title