The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2014
Filed:
Aug. 28, 2012
Shifeng Xu, Qiqihar, CN;
Wendong Shao, Qiqihar, CN;
Haibin HU, Qiqihar, CN;
Yuebin Yu, Qiqihar, CN;
Lidong LI, Qiqihar, CN;
Kewei LV, Qiqihar, CN;
Shuming Xing, Qiqihar, CN;
Derong Zhang, Qiqihar, CN;
Xinqiang Liu, Qiqihar, CN;
Shifeng Xu, Qiqihar, CN;
Wendong Shao, Qiqihar, CN;
Haibin Hu, Qiqihar, CN;
Yuebin Yu, Qiqihar, CN;
Lidong Li, Qiqihar, CN;
Kewei Lv, Qiqihar, CN;
Shuming Xing, Qiqihar, CN;
Derong Zhang, Qiqihar, CN;
Xinqiang Liu, Qiqihar, CN;
Qiqihar Railway Rolling Stock Co., Ltd., Qiqihar, CN;
Abstract
A central suspension device, a wagon bogie and an express railway wagon, wherein the central suspension device is arranged between a frame and a bolster of the wagon bogie and comprises a rubber-metal pad spring group composed of at least two rubber-metal pad springs, a bottom end of each rubber-metal pad spring is connected with the frame, a top end of at least one rubber-metal pad spring of the rubber-metal pad spring group is connected with the bolster, and a gap exists between the top end of at least one rubber-metal pad spring and the bolster. The central suspension device has multiple stages of rigidities in the transverse and vertical directions, so that the different rigidities can be mutually shifted conveniently on the empty vehicle condition and the heavy-load condition of the vehicle, therefore, the central suspension device is applicable to express railway vehicles for safe and stable running.