Matthias Scholl P.C.
Railroad car wheel truck
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: α=16-30°, and μ<tgα<μ+μ1, in which a represents an included angle between the secondary friction surface and a vertical plane, μ represents a friction coefficient of the primary friction surface, and μ1 represents a friction coefficient of the secondary friction surface.
CSR Yangtze Co., Ltd.
B
B61F
inventional
Baolei Yongjiang Yong Mingdao
Wang Li Xu Sun