Railcar bogie

Patent metadata

Field	Value
Publication number	US-10899372-B2
Application number	US-201616065823-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Dec 25, 2015
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

A railcar bogie includes: a cross beam supporting a carbody of a railcar; an axle box including a bearing accommodating portion accommodating a bearing rotatably supporting a wheelset; a plate spring extending in a car longitudinal direction while supporting a car width direction end portion of the cross beam; and a receiving member provided above the axle box and supporting a car longitudinal direction end portion of the plate spring, an attachment hole being formed at a car longitudinal direction outside portion of the receiving member, a lifting fitting used to lift the bogie being attached to the attachment hole.

First claim

The invention claimed is:

1. A railcar bogie comprising:
a cross beam supporting a carbody of a railcar;
an axle box including a bearing accommodating portion accommodating a bearing rotatably supporting a wheelset;
the axle box includes a projecting portion projecting from the bearing accommodating portion outward in the car longitudinal direction;
a plate spring extending in a car longitudinal direction while supporting a car width direction end portion of the cross beam;
a receiving member provided above the axle box and supporting a car longitudinal direction end portion of the plate spring; and
a hooking member including a fixed portion and a hooking portion, an upper portion of the fixed portion being fixed to the receiving member, wherein:
an attachment hole is formed at a car longitudinal direction outside portion of the receiving member, a lifting fitting used to lift the bogie being attached to the attachment hole, and
the hooking portion is hooked to the projecting portion and is configured to support the projecting portion from below when the receiving member is lifted through the lifting fitting.

2. The railcar bogie according to claim 1 , wherein:
the receiving member includes
a bottom wall portion supporting a lower surface of the plate spring and
an outer wall portion provided at an outside of the bottom wall portion in the car longitudinal direction and located higher than the bottom wall portion; and

the attachment hole is formed at the outer wall portion.

3. The railcar bogie according to claim 2 , wherein the receiving member further includes a pair of side wall portions projecting upward from both respective car width direction ends of the bottom wall portion.

4. The railcar bogie according to claim 2 , wherein:
the lifting fitting is an eye bolt including an annular attaching portion to which a bogie lifting rope is attached; and
the eye bolt is attached to the attachment hole with the attaching portion located higher than the plate spring.

5. The railcar bogie according to claim 4 , wherein the eye bolt is detachably attached to the attachment hole.

6. The railcar bogie according to claim 1 , wherein:
the lifting fitting is an eye bolt including an annular attaching portion to which a bogie lifting rope is attached; and
the eye bolt is attached to the attachment hole with the attaching portion located higher than the plate spring.

7. The railcar bogie according to claim 6 , wherein the eye bolt is detachably attached to the attachment hole.

8. The railcar bogie according to claim 1 , wherein the attachment hole is formed along a vertical direction.

9. The railcar bogie according to claim 1 ,
wherein the lifting fitting includes an attaching portion to which a bogie lifting rope is attached, and
wherein the attaching portion of the lifting fitting is located at a position higher than an upper surface of the plate spring.

10. The railcar bogie according to claim 1 ,
wherein the lifting fitting includes an attaching portion to which a bogie lifting rope is attached, and
wherein the attaching portion of the lifting fitting is located at a position higher than an upper surface of the plate spring.

11. A railcar bogie comprising:
a cross beam supporting a carbody of a railcar;
an axle box including a bearing accommodating portion accommodating a bearing rotatably supporting a wheelset;
a plate spring extending in a car longitudinal direction while supporting a car width direction end portion of the cross beam; and
a receiving member provided above the axle box and supporting a car longitudinal direction end portion of the plate spring,
an attachment hole being formed at a car longitudinal direction outside portion of the receiving member, a lifting fitting used to lift the bogie being attached to the attachment hole,
wherein the receiving member includes
a bottom wall portion supporting a lower surface of the plate spring and
a pair of side wall portions projecting upward from both respective car width direction ends of the bottom wall portion, and
an outer wall portion provided at an outside of the bottom wall portion in the car longitudinal direction and located higher than the bottom wall portion, and

wherein the attachment hole is formed at the outer wall portion.

12. The railcar bogie according to claim 11 , further comprising a hooking member including a fixed portion and a hooking portion, the fixed portion being fixed to the receiving member, the hooking portion being provided lower than the fixed portion, wherein:
the axle box includes a projecting portion projecting from the bearing accommodating portion outward in the car longitudinal direction; and
when the receiving member is lifted through the lifting fitting, the hooking portion is opposed to the projecting portion from below so as to support the projecting portion.

13. The railcar bogie according to claim 12 , wherein:
the lifting fitting is an eye bolt including an annular attaching portion to which a bogie lifting rope is attached; and
the eye bolt is attached to the attachment hole with the attaching portion located higher than the plate spring.

14. The railcar bogie according to claim 13 , wherein the eye bolt is detachably attached to the attachment hole.

15. The railcar bogie according to claim 11 , wherein:
the lifting fitting is an eye bolt including an annular attaching portion to which a bogie lifting rope is attached; and
the eye bolt is attached to the attachment hole with the attaching portion located higher than the plate spring.

16. The railcar bogie according to claim 15 , wherein the eye bolt is detachably attached to the attachment hole.

17. The railcar bogie according to claim 11 , wherein the attachment hole is formed along a vertical direction.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

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

Classifications

• B61F5/00 Primary

  Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves · 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

• B61F5/50

  Other details · CPC title

• B61F5/302 Primary

  Leaf springs · CPC title