Title:
DRUM GEAR
Document Type and Number:
WIPO Patent Application WO/2020/133264
Kind Code:
A1
Abstract:
A drum gear comprises a sleeve (21), an extension portion (22), and a drum tooth portion (23). The extension potion extends from an end of the sleeve to another end of the sleeve, and an annular gap (24) having an opening is formed between the extension portion and the sleeve. The drum tooth portion is disposed at a peripheral surface of the extension portion, and is engaged with an inner tooth portion in a drum coupling. An arc-shaped surface (211) is provided at a peripheral surface of the sleeve, and is engaged with an annular seal portion in the drum coupling. The gear is used to resolve the issue in the prior art in which drum gear couplings wear and vibrate easily during operation.
Inventors:
ZHANG XUNLIN (CN)
ZHAO YONGQIANG (CN)
WU GUOQING (CN)
WU CHENGPAN (CN)
ZHAO YONGQIANG (CN)
WU GUOQING (CN)
WU CHENGPAN (CN)
Application Number:
PCT/CN2018/125036
Publication Date:
July 02, 2020
Filing Date:
December 28, 2018
Export Citation:
Assignee:
CRRC QISHUYAN INST CO LTD (CN)
International Classes:
F16D3/02
Foreign References:
| CN202266611U | 2012-06-06 | |||
| EP1773555A1 | 2007-04-18 | |||
| CN106438735A | 2017-02-22 | |||
| CN101900166A | 2010-12-01 | |||
| EP1091837A1 | 2001-04-18 | |||
| CN103782048A | 2014-05-07 | |||
| CN201401452Y | 2010-02-10 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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