The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2020
Filed:
Nov. 17, 2017
Crrc Yangtze Corporation Limited, Wuhan, CN;
Chunjiang Shi, Wuhan, CN;
Mingdao Sun, Wuhan, CN;
Qiangjun Jiang, Wuhan, CN;
Fengwei Liu, Wuhan, CN;
Baolei Wang, Wuhan, CN;
Wenliang Liu, Wuhan, CN;
Chuqiang Tang, Wuhan, CN;
Ruijin Jiang, Wuhan, CN;
Liangcai Lin, Wuhan, CN;
Tiejun Fu, Wuhan, CN;
CRRC Yangtze Corporation Limited, Wuhan, Hubei, CN;
Abstract
The present invention discloses a connecting rod type two-level locking device, a hopper car bottom door and a hopper car, and belongs to the technical field of rail wagons. The connecting rod type two-level locking device includes a transmission shaft, a door opening arm, a first roller, a second roller, a first locating pin, a standstill locking disk and a linkage mechanism. The hopper car bottom door includes the connecting rod type two-level locking device. The hopper car includes the bottom door. Even if the connecting rod type two-level locking device is accidentally stressed, the linkage mechanism cannot rotate, and at this time, the slave arm cannot rotate neither. The accidental opening of the hopper car bottom door can be avoided. The hopper car is more reliable to use.