Railcar with buffer

Patent metadata

Field	Value
Publication number	US-10071754-B2
Application number	US-201514979908-A
Country	US
Kind code	B2
Filing date	Dec 28, 2015
Priority date	Dec 28, 2015
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A railcar according to the present disclosure includes a buffer installed in an end portion of each of coupled cars, and urging each other in a car longitudinal direction, the buffer having a stem movable in the car longitudinal direction and a spring urging the stem, an underframe internally enclosing part of the buffer and including an opening on a top plate of the underframe, and a compression mechanism forcibly compressing the spring to move the stem, part of the compression mechanism being freely brought into and out of the opening.

First claim

The invention claimed is:

1. A railcar comprising:
a buffer installed in an end portion of each of coupled cars, and urging each other in a car longitudinal direction, the buffer having a stem movable in the car longitudinal direction and a spring urging the stem;
an underframe internally enclosing part of the buffer and including an opening on a top plate of the underframe; and
a compression mechanism forcibly compressing the spring to move the stem, part of the compression mechanism being freely brought into and out of the opening.

2. The railcar according to claim 1 , further comprising:
a gangway footplate serving as a passage between the coupled cars; and
a buffer plate overlapping the gangway footplate and being abutted with the adjacent car,
wherein the buffer presses the buffer plate in the car longitudinal direction.

3. The railcar according to claim 1 ,
wherein the buffer includes:
the spring positioned coaxial to the stem;
a spring receiving member fixed to the stem and supporting one end of the spring; and
a housing member remaining stationary with respect to the movable stem and supporting the other end of the spring,
wherein the compression mechanism includes:
a first fastening member fixed to the housing member;
a second fastening member engaged with the first fastening member; and
a holding portion provided in the spring receiving member and holding the second fastening member or the first fastening member, and
wherein by tightening the first fastening member and the second fastening member, the spring receiving member and the stem are moved together to compress the spring.

4. The railcar according to claim 1 , further comprising:
a displacement preventing member preventing a buffer rear end portion from displacing toward the top plate, the displacement preventing member being fixed to the underframe and extending to the buffer rear end portion, with the buffer installed in the end portion of the car.

5. The railcar according to claim 1 ,
wherein the opening is positioned at a front side of the stem in the underframe and formed on an upper surface of the top plate, and
wherein the underframe includes a non-contact space where there is no member arranged in contact with a buffer rear end portion when the buffer protrudes from the opening.

6. The railcar according to claim 3 ,
wherein the first fastening member is a nut, and the second fastening member is a bolt extending in parallel to the spring, and
wherein the holding portion is a groove receiving the bolt.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Hirata Hiroyuki
• Ashida Ryosuke

Classifications

• B61G11/04 Primary

  with helical springs · CPC title

• B61G11/18

  Details · CPC title