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:
Oct. 17, 2017
Filed:
Nov. 06, 2014
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, CN;
Abstract
The present invention discloses a two-level locking device, a hopper car bottom door and a hopper car. The device includes a first transmission shaft, a second transmission shaft, a clutch, a pressure mechanism and a reset mechanism, wherein under the pressure action of the pressure mechanism, the clutch separates the first transmission shaft from the second transmission shaft, and under the action of the reset mechanism, the clutch joints the first transmission shaft with the second transmission shaft. The bottom door includes the device. The hopper car includes the bottom door. By adopting the device, when the clutch is accidently separated by the pressure action of the pressure mechanism, the reset mechanism can re-joint the clutch to prevent the accidental rotation of the first transmission shaft and the second transmission shaft. By adopting the bottom door, the hopper car bottom door opened and closed by a planar four-bar linkage passing a dead point is more reliable to use. The hopper car is more reliable to use.