Variable stiffness positioning device for railway vehicle bogie axle box
US9919718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2014 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Jun 19, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61F5/36
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention provides a variable stiffness positioning device for a railway vehicle bogie axle box. The variable stiffness positioning device includes a vertical elastomer arranged between the top face of an axle box bearing saddle and the bottom surface of a guide frame of a side fame, and a longitudinal elastomer arranged between the axle box bearing saddle and the front and back side faces of the guide frame of the side fame, the longitudinal elastomer is provided with at least one small-stiffness elastic element and a large-stiffness elastic element, and the small-stiffness elastic element is arranged in an elastomer pre-compression device and is serially arranged with the large-stiffness elastic element under the action of a pre-compression load F1. The longitudinal elastomer has a larger longitudinal compression stiffness when the longitudinal deformation displacement is very small, so that the railway vehicle can be guaranteed to have a higher snaking critical operation speed when operating on a straight line, and the acceleration operation demand of the vehicle is satisfied; when the longitudinal deformation displacement reaches a set numerical value, the longitudi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.