Csr Yangtze Co., Ltd.

Yongjiang Li

Yong Xu

Baolei Wang

Mingdao Sun

Hui Luo

Wanlu Gong

Guangyi Xiao

A wheel truck, including: a front wheel pair assembly and a rear wheel pair assembly, two side frame assemblies, two spring suspension devices, and a bolster assembly. The spring suspension devices include a bearing spring unit, a damping spring, and a wedge. The wedge includes a primary friction surface and a secondary friction surface. The primary friction surface is attached to a column surface of the side frame assembly. The secondary friction surface is attached to an inclined surface of the bolster assembly. The wedge has the following structure parameters: &#x3b1;=16-30&#xb0;, and &#x3bc;&#x3c;tg&#x3b1;&#x3c;&#x3bc;+&#x3bc;, in which a represents an included angle between the secondary friction surface and a vertical plane, &#x3bc; represents a friction coefficient of the primary friction surface, and &#x3bc;represents a friction coefficient of the secondary friction surface.

Railroad car wheel truck

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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Wuhan, China

Yongjiang Li