MULTI-GEAR ADAPTIVE GEAR BOX FOR RAILWAY VEHICLE

WIPO Patent Application WO/2021/047090

A1

A multi-gear adaptive gear box for a railway vehicle, the gear box comprising a gear box body (4), an input pinion shaft (3), an intermediate gear shaft (21) and a power output shaft (20); the input pinion shaft (3) is mounted on the gear box body (4) by means of N input gears (1, 2); the intermediate gear shaft (21) is mounted on the gear box body (4) by means of M intermediate gears (13, 15, 17), K of the M intermediate gears (13, 15, 17) meshing with gears on the power output shaft (20), wherein N≥2, and M=N+K. The gear box further comprises a gear shifting driving part, and the gear shifting driving part comprises a driving source (11); the driving source (11) is controlled to rotate forwards and backwards so as to displace M-K gears on the intermediate gear shaft (21) to the left and right to separately mesh with N input pinion shafts. The described gear box changes the load point of a vehicle driving system so that a motor and a converter operate within the optimal efficiency ranges, and the adaptive performance of a power car and a subway vehicle bogie may be achieved.

JP2003014061	AUTOMATIC TRANSMISSION
JP2010144894	POWER TRANSMISSION DEVICE
WO/2019/219294	HYBRID TRANSMISSION WITH OFFSET ELECTRIC MACHINE

CHEN GUOSHENG (CN)
SHEN LONGJIANG (CN)
DING CHANGQUAN (CN)
ZHONG XIAOBO (CN)
LI ZHENHUA (CN)

PCT/CN2019/125064

March 18, 2021

December 13, 2019

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CRRC ZHUZHOU LOCOMOTIVE CO LTD (CN)

F16H3/091; B61C9/38; F16H57/021; F16H57/023; F16H61/30; F16H61/32

CN106471280A	2017-03-01
CN103237709A	2013-08-07
CN105465346A	2016-04-06
CN102350869A	2012-02-15
CN108167398A	2018-06-15
GB2465978A	2010-06-09

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