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Title:
BODY BOLSTER-FREE UNDERFRAME END STRUCTURE OF RAILWAY VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/035874
Kind Code:
A1
Abstract:
A body bolster-free underframe end structure of a railway vehicle, comprising an underframe end beam (1), underframe edge beams (7), a coupler mounting seat (3), coupler support beams (4) and oblique support beams (2), wherein the front part of the coupler mounting seat (3) is connected to the underframe end beam (1) by means of the oblique support beams (2), and the two sides of the coupler mounting seat (3) are connected to the underframe edge beams (7) by means of the coupler support beams (4), so that quadrilateral frame structures are formed at the two sides of the coupler mounting seat (3) respectively. The oblique support beams (2) form an included angle of 55°-80° that has a forward opening, and the coupler support beams (4) form an included angle of 120°-140° that has a backward opening. All components of the underframe end structure may be independently produced and then assembled, so that the production efficiency may be improved. The longitudinal force of the vehicle is transmitted by using multiple paths, and the single transmission of the longitudinal force is dispersed, so that the bearing capacity of the structure is guaranteed. A stress concentration area is processed by employing a transition structure, so that fatigue service life requirements of the structure are ensured. The complex assembly relationship and process adjustment with a bogie are avoided by employing the body bolster-free structure.

Inventors:
LIANG JUXING (CN)
WANG XINGWEN (CN)
LI YUNCHUAN (CN)
LI YONGJUN (CN)
HUANG WENJIE (CN)
ZHU CHANGPING (CN)
Application Number:
PCT/CN2019/109338
Publication Date:
March 04, 2021
Filing Date:
September 30, 2019
Export Citation:
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Assignee:
CRRC NANJING PUZHEN CO LTD (CN)
International Classes:
B61F1/08; B61F1/10
Foreign References:
CN110696864A2020-01-17
CN106004911A2016-10-12
CN107901938A2018-04-13
CN104149806A2014-11-19
CN110155097A2019-08-23
CN103832446A2014-06-04
EP0689982A11996-01-03
Attorney, Agent or Firm:
NANJING TONGZE PATENT AGENCY FIRM (LIMITED LIABILITY PARTNERSHIP) (CN)
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