RAILWAY CAR, CAR BODY THEREOF, AND END UNDERFRAME

WIPO Patent Application WO/2020/133934

A1

An end underframe (1) comprises a front end beam (11), a back end beam (12), two side sills (13), a bolster (14), and a draft sill (15). A force transmission beam (16) positioned corresponding to the draft sill (15) is welded between the bolster (14) and the back end beam (12). The side sills (13) each comprises a U-shaped steel channel (131) having an opening facing the draft sill (15), and a sealing plate (132) welded to the opening. Both of the U-shaped steel channel (131) and the sealing plate (132) are integrally formed structures. A variable cross-section structure is provided at an end portion of each side sill (13) facing away from the draft sill (15), and is used to gradually reduce a cross-sectional area of the side sill in a direction from the front end beam (11) to the back end beam (12). Further provided are a car body and a railway car. The end underframe is additionally provided with the force transmission beam, the integrally formed side sill, and the variable cross-section structure of the end portion of the side sill, thereby meeting the requirements of compression resistance and heavy-load resistance.

WO/2011/142208	RAILROAD VEHICLE
JP2007253905	ENERGY ABSORBING STRUCTURE

LIU JUANJUAN (CN)
GUO BIN (CN)
FAN LETIAN (CN)
LI DONGBO (CN)
ZHANG SHUOSHAO (CN)
LIU HAIBO (CN)
LI YING (CN)
MEI WENBO (CN)

PCT/CN2019/090803

July 02, 2020

June 12, 2019

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CRRC TANGSHAN CO LTD (CN)

B61F1/10; B61F1/00; B61F1/02

CN203460872U	2014-03-05
CN103832446A	2014-06-04
CN105946886A	2016-09-21
CN202243507U	2012-05-30
FR2760712A1	1998-09-18
KR100758140B1	2007-09-12
JP2005081942A	2005-03-31

IPFUTURE INTELLECTUAL PROPERTY LAW OFFICE (CN)

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