Tubular elastic linkage device for axle beam
US-2017355387-A1 · Dec 14, 2017 · US
Steering bogie for railcar
US2017341663A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017341663-A1 |
| Application number | US-201515537690-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 9, 2015 |
| Priority date | Dec 17, 2014 |
| Publication date | Nov 30, 2017 |
| Grant date | — |
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- Title
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Abstract
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A steering bogie for a railcar includes: a bogie frame supporting a carbody of the railcar; a wheelset including an axle and wheels, the axle extending in a car width direction, the wheels being provided at both respective sides of the axle; and a steering device that presses a pressing target member to steer the wheelset with respect to the bogie frame, the pressing target member being constituted by the wheelset or a member configured to be displaced integrally with the wheelset in a steering direction, the steering device including at least one steering unit, the at least one steering unit including a pressing member that separably contacts the pressing target member to press the pressing target member, and a power mechanism causes the pressing member to contact and separate from the pressing target member.
First claim
Opening claim text (preview).
1 . A steering bogie for a railcar, the steering bogie comprising: a bogie frame supporting a carbody of the railcar; a wheelset including an axle and wheels, the axle extending in a car width direction, the wheels being provided at both respective sides of the axle; and a steering device that presses a pressing target member to steer the wheelset with respect to the bogie frame, the pressing target member being constituted by the wheelset or a member configured to be displaced integrally with the wheelset in a steering direction, the steering device including at least one steering unit, the at least one steering unit including a pressing member that separably contacts the pressing target member to press the pressing target member, and a power mechanism that causes the pressing member to contact and separate from the pressing target member. 2 . The steering bogie according to claim 1 , wherein: the pressing target member is the wheel of the wheelset; and the steering device steers the wheelset by the pressing member pressing the wheel by power of the power mechanism. 3 . The steering bogie according to claim 2 , wherein the steering device steers the wheelset by the pressing member pressing a wheel tread of the wheel by the power of the power mechanism. 4 . The steering bogie according claim 2 , wherein the pressing member is a roller that is rotatable together with the wheel when the pressing member contacts the wheel. 5 . The steering bogie according to claim 2 , wherein the pressing member is formed by a low friction material. 6 . The steering bogie according claim 1 , wherein: the at least one steering unit comprises a plurality of steering units; the plurality of steering units include a first steering unit that separably presses a first portion of the pressing target member, the first portion being located at one side in the car width direction and a second steering unit that separably presses a second portion of the pressing target member, the second portion being located at the other side in the car width direction; and the first steering unit and the second steering unit press the pressing target member in directions different from each other to steer the wheelset. 7 . The steering bogie according to claim 1 , wherein the power mechanism is an actuator. 8 . The steering bogie according to claim 1 , wherein the power mechanism is a link mechanism that operates in accordance with turning of the bogie frame relative to the carbody about a vertical axis.
Assignees
Inventors
Classifications
without driven axles or wheels · CPC title
- B61F5/38Primary
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
- B61F5/386Primary
fluid actuated · CPC title
- B61F5/46Primary
Adjustment controlled by a sliding axle under the same vehicle underframe · CPC title
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- What does patent US2017341663A1 cover?
- A steering bogie for a railcar includes: a bogie frame supporting a carbody of the railcar; a wheelset including an axle and wheels, the axle extending in a car width direction, the wheels being provided at both respective sides of the axle; and a steering device that presses a pressing target member to steer the wheelset with respect to the bogie frame, the pressing target member being constit…
- Who is the assignee on this patent?
- Kawasaki Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification B61F5/38. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Nov 30 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).