Railroad car wheel truck

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8689701
APP PUB NO 20130047882A1
SERIAL NO

13661013

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Abstract

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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 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.

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Patent Owner(s)

Patent OwnerAddress
CSR YANGTZE CO LTDDAQIAO NEW AREA JIANGXIA ECONOMIC DEVELOPMENT ZONE WUHAN HUBEI 430212

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Yongjiang Wuhan, CN 3 26
Sun, Mingdao Wuhan, CN 7 28
Wang, Baolei Wuhan, CN 20 32
Xu, Yong Wuhan, CN 250 1527

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