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Patent Searching and Data


Title:
LINK TYPE SECONDARY LOCKING DEVICE, HOPPER CAR BOTTOM DOOR AND HOPPER CAR
Document Type and Number:
WIPO Patent Application WO/2015/070721
Kind Code:
A1
Abstract:
Disclosed are a link type secondary locking device, a hopper car bottom door and a hopper car, relating to the technical field of railway wagons. The link type secondary locking device comprises a transmission shaft, a door opening arm, a first roller, a second roller, a first locating pin, an anti-rotation disc and a link mechanism. The hopper car bottom door comprises the link type secondary locking device. The hopper car comprises the bottom door. Even when the link type secondary locking device is accidentally under a force, the link mechanism cannot rotate and then a driven arm likewise cannot rotate. The hopper car bottom door can avoid accidental opening of the hopper car bottom door. The hopper car is more reliable in use.

Inventors:
SHI CHUNJIANG (CN)
SUN MINGDAO (CN)
JIANG QIANGJUN (CN)
LIU FENGWEI (CN)
WANG BAOLEI (CN)
LIU WENLIANG (CN)
TANG CHUQIANG (CN)
JIANG RUIJIN (CN)
LIN LIANGCAI (CN)
FU TIEJUN (CN)
Application Number:
PCT/CN2014/090411
Publication Date:
May 21, 2015
Filing Date:
November 06, 2014
Export Citation:
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Assignee:
CSR YANGZE CO LTD (CN)
International Classes:
B61D7/26
Foreign References:
CN203580952U2014-05-07
CN103552565A2014-02-05
CN101177142A2008-05-14
CN103303323A2013-09-18
US4291631A1981-09-29
CN202743242U2013-02-20
CN103303324A2013-09-18
Attorney, Agent or Firm:
BEIJING BRIGHT & RIGHT LAW FIRM (CN)
北京华沛德权律师事务所 (CN)
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