US 11,964,679 B2
Underframe end structure without bolster beam for rail vehicle
Juxing Liang, Nanjing (CN); Xingwen Wang, Nanjing (CN); Yunchuan Li, Nanjing (CN); Yongjun Li, Nanjing (CN); Wenjie Huang, Nanjing (CN); and Changping Zhu, Nanjing (CN)
Assigned to CRRC Nanjing Puzhen Co., Ltd., Nanjing (CN)
Appl. No. 17/044,235
Filed by CRRC Nanjing Puzhen Co., Ltd., Nanjing (CN)
PCT Filed Sep. 30, 2019, PCT No. PCT/CN2019/109338
§ 371(c)(1), (2) Date Sep. 30, 2020,
PCT Pub. No. WO2021/035874, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 201910813790.8 (CN), filed on Aug. 30, 2019.
Prior Publication US 2023/0109547 A1, Apr. 6, 2023
Int. Cl. B61F 1/10 (2006.01)
CPC B61F 1/10 (2013.01) 12 Claims
OG exemplary drawing
 
1. An underframe end structure without a bolster beam for a rail vehicle, comprising an underframe end beam, an underframe edge beam, a coupler mounting base, coupler support beams, and oblique support beams, wherein
a front of the coupler mounting base is connected to the underframe end beam through the oblique support beams,
two sides of the coupler mounting base are connected to the underframe edge beam through the coupler support beams to form quadrilateral frame structures on the two sides of the coupler mounting base, respectively,
the oblique support beams form an included angle of 55° to 80° with a forward opening, and
the coupler support beams form an included angle of 120° to 140° with a backward opening,
wherein a front of an oblique support beam of the oblique support beams is connected to the underframe edge beam through a front-end connecting plate on an outer side of the front of the oblique support beam.