Railroad car wheel truck
US8683927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2012 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Oct 30, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61F5/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A wheel truck for a railroad car, including: a front wheel pair assembly and a rear wheel pair assembly; two side frame assemblies, each side frame assembly including a square box and journal-box guides; two spring suspension devices; and a bolster assembly including two ends disposed on the two spring suspension devices, respectively. The bolster assembly includes a pilot hole in the center and two mounting holes on the two ends, the pilot hole is rotationally matched with a cylindrical upper center plate of a car body for transmitting vertical and horizontal forces from the car body, and the two mounting holes are disposed above the two spring suspension devices, respectively. Each mounting hole receives a lower side bearing, and the lower side bearing is matched with a corresponding upper side bearing disposed on each side of the car body for transmitting the vertical load from the car body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.