Restricting member and railcar including restricting member

Patent metadata

Field	Value
Publication number	US-10315671-B2
Application number	US-201615350199-A
Country	US
Kind code	B2
Filing date	Nov 14, 2016
Priority date	Nov 11, 2015
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

A restricting member is configured to restrict abnormal rising of a carbody when an air spring expands by a predetermined amount or more. The restricting member includes: a base portion; a contact portion provided at the base portion and configured to be brought into contact with a lower surface of a bogie frame when the air spring expands by the predetermined amount or more; and a temporary fastening portion formed at the base portion. The temporary fastening portion is configured to be attachable to and detachable from a temporary fastened portion formed at a side surface of a center pin extending downward from a carbody.

First claim

What is claimed is:

1. A restricting member configured to restrict abnormal rising of a carbody when an air spring expands by a predetermined amount or more,
the restricting member comprising:
a base portion;
a contact portion provided at the base portion and configured to be brought into contact with a lower surface of a bogie frame when the air spring expands by the predetermined amount or more; and
a temporary fastening portion formed at the base portion,
the temporary fastening portion being configured to be attachable to and detachable from a temporary fastened portion formed at a side surface of a center pin extending downward from the carbody, and
the temporary fastening portion includes one or more locking portions, each locked to a respective groove, each respective groove being provided at at least one of respective forward and rearward direction side surfaces of the center pin, each respective groove being open only at an upper side, and each respective groove serving as the temporary fastened portion.

2. A restricting member configured to restrict abnormal rising of a carbody when an air spring expands by a predetermined amount or more, the restricting member comprising:
a base portion;
a contact portion provided at the base portion and configured to be brought into contact with a lower surface of a bogie frame when the air spring expands by the predetermined amount or more; and
a temporary fastening portion formed at the base portion,
the temporary fastening portion being configured to be attachable to and detachable from a temporary fastened portion formed at a side surface of a center pin extending downward from the carbody, wherein
the temporary fastening portion is a shaft portion inserted into a hole portion, the hole portion being provided at the center pin, the hole portion extending in a horizontal direction, and the hole portion serving as the temporary fastened portion.

3. The restricting member according to claim 2 , wherein:
one end of the shaft portion extends in the horizontal direction to a predetermined position inside the center pin from a contact surface where the base portion contacts the center pin; and
the one end of the shaft portion includes a projecting portion projecting downward toward the hole portion spreading downward from the predetermined position.

4. A restricting member configured to restrict abnormal rising of a carbody when an air spring expands by a predetermined amount or more, the restricting member comprising:
a base portion;
a contact portion provided at the base portion and configured to be brought into contact with a lower surface of a bogie frame when the air spring expands by the predetermined amount or more; and
a temporary fastening portion formed at the base portion,
the temporary fastening portion being configured to be attachable to and detachable from a temporary fastened portion formed at a side surface of a center pin extending downward from the carbody; and
a handle portion connecting an extending portion of the base portion and a lower surface of the contact portion, the extending portion extending downward along the center pin.

5. A railcar comprising:
a carbody;
a bogie;
an air spring provided between the carbody and a bogie frame of the bogie;
a center pin extending downward in a vertical direction from a center portion of the carbody and allowing the bogie to rotate relative to the carbody;
a temporary fastened portion formed at a side surface of the center pin; and
a restricting member,
the restricting member including
a base portion,
a contact portion provided at the base portion and configured to be brought into contact with a lower surface of the bogie frame when the air spring expands by a predetermined amount or more, and
a temporary fastening portion formed at the base portion, the temporary fastening portion being configured to be attachable to and detachable from the temporary fastened portion.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Sakahira Masahiro
• Isomura Kazuo
• Tojo Takanori
• Ikeda Satoshi
• Maeba Tomohide
• Hikosaka Naoki
• Narita Tomohiro

Classifications

• B61F5/10 Primary

  incorporating fluid springs · CPC title