Railroad car wheel truck
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 1, 2014
Grant Date -
Mar 7, 2013
app pub date -
Oct 30, 2012
filing date -
May 14, 2010
priority date (Note) -
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status (Latency Note)
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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.
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