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Patent Searching and Data


Title:
COUPLER TELESCOPIC APPARATUS AND COUPLER
Document Type and Number:
WIPO Patent Application WO/2019/101218
Kind Code:
A1
Abstract:
A coupler telescopic apparatus, comprising a housing (1), and a drawbar (2) capable of telescoping along the housing, the housing being sleeved on the outside of the drawbar, an outer side surface of the drawbar being fixedly provided with limiting blocks (3), the inside of the housing being sleeved with a locking ring (4) in contact with the limiting blocks, the locking ring being coaxial with the housing, the locking ring being rotatably connected to the housing, an inner surface of the locking ring being provided with slots (41) along the axial direction, the shape of the slots corresponding to the limiting blocks, so that when the slots are aligned with the limiting blocks, the limiting blocks pass through the slots, and when an extension of the drawbar is complete, the locking ring is rotated to restrict the limiting blocks, and lock the extension of the drawbar. The coupler telescopic apparatus reduces the amount of occupied space, and has a simple structure. Also disclosed is a coupler, comprising the coupler telescopic apparatus.

Inventors:
WANG, Guangchao (No.231 Ruichang Road, Shibei DistrictQingdao, Shandong 0, 266000, CN)
LIU, Hui (No.231 Ruichang Road, Shibei DistrictQingdao, Shandong 0, 266000, CN)
TIAN, Qianqian (No.231 Ruichang Road, Shibei DistrictQingdao, Shandong 0, 266000, CN)
Application Number:
CN2018/118557
Publication Date:
May 31, 2019
Filing Date:
November 30, 2018
Export Citation:
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Assignee:
CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD. (No.231 Ruichang Road, Shibei DistrictQingdao, Shandong 0, 266000, CN)
International Classes:
B61G9/04
Foreign References:
CN108839668A2018-11-20
CN102424057A2012-04-25
CN102030014A2011-04-27
CN106218662A2016-12-14
DE2448889C21986-11-20
US7150368B22006-12-19
Attorney, Agent or Firm:
QINGDAO LAWSCI INTELLECTUAL PROPERTY CO., LTD. (Room401, Jufeng Venture Building No.52 Miaoling Road, Laoshan Distric, Qingdao Shandong 0, 266000, CN)
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