Bottom door device and hopper car having the same

US9061688B2 · kind B2 · utility

Assignee

• Qiqihar Railway Rolling Stock Co., Ltd. · CN

Inventors

• Linghan Yue · Qiqihar, CN
• Shuang Yang · Naperville, US
• Baichuan He · Nanhu, CN
• Lei Yu · Huangguan, CN
• Zhigang Li · Fryeburg, US
• Tianjun Zhao · Xing'an, CN
• Yong Fu · Xing'an, CN
• Shengkun Wang · Xing'an, CN

Key dates

• Filing date: Jul 27, 2012
• Grant date: Jun 23, 2015
• Expiry date: Jul 27, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B61D7/18
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The present application provides a bottom door device and a hopper car, the bottom door device includes a first bottom door and a second bottom door, the first bottom door includes a first door end plate and a first bottom door plate which are fixedly connected, the second bottom door includes a second door end plate and a second bottom door plate which are fixedly connected, and a labyrinth seal is formed between the first bottom door plate and the second bottom door plate. By using a labyrinth seal to replace the overlapping sealing in the prior art, the bottom door device and the hopper car provided by the present application can still meet the sealing requirement on the premise that the two bottom door plates can be closed without complying with any specific order, thereby optimizing the structure of the bottom door device in the prior art.