Title:
PRE-STRESSED ANCHOR CABLE EXPANDABLE INNER ANCHOR HEAD
Document Type and Number:
WIPO Patent Application WO/2022/007695
Kind Code:
A1
Abstract:
A pre-stressed anchor cable expandable inner anchor head, comprising a hollow flower tube (12), a thin-walled steel pipe (3), a top sealing plate (5), a bottom sealing head (6), an anchor grab (1) and a support grab (4). The hollow flower tube (12) is internally provided with a central shaft hole along the axial direction thereof. The thin-walled steel pipe (3) is disposed in the central shaft hole in the hollow flower tube (12), and the thin-walled steel pipe (3) moves back and forth in the central shaft hole in the hollow flower tube (12). While increasing the contact area between the inner anchor head and a grouting body by means of the hollow flower tube (12), under the dual anchoring action of the anchor grab (1) and the support grab (4), the anchoring force of the anchoring section of an anchor cable is greatly improved, which helps complete subsequent grouting work.
Inventors:
YANG ZHONGNIAN (CN)
LIU XUESEN (CN)
LIU QUANWEI (CN)
LI KEXIAN (CN)
HUANG CHENG (CN)
LIU LINSHENG (CN)
HUANG XIXI (CN)
LING XIANZHANG (CN)
LIU XUESEN (CN)
LIU QUANWEI (CN)
LI KEXIAN (CN)
HUANG CHENG (CN)
LIU LINSHENG (CN)
HUANG XIXI (CN)
LING XIANZHANG (CN)
Application Number:
PCT/CN2021/103908
Publication Date:
January 13, 2022
Filing Date:
July 01, 2021
Export Citation:
Assignee:
UNIV QINGDAO TECHNOLOGY (CN)
QINGDAO METRO LINE 6 CO LTD (CN)
QINGDAO METRO LINE 1 CO LTD (CN)
QINGDAO METRO LINE 6 CO LTD (CN)
QINGDAO METRO LINE 1 CO LTD (CN)
International Classes:
E04C5/12; E02D5/74
Foreign References:
| CN111779195A | 2020-10-16 | |||
| CN1415805A | 2003-05-07 | |||
| CN110080221A | 2019-08-02 | |||
| DE2932809A1 | 1981-03-26 | |||
| CN204510209U | 2015-07-29 | |||
| CN208395680U | 2019-01-18 | |||
| JP2007262808A | 2007-10-11 | |||
| CN201406798Y | 2010-02-17 |
Attorney, Agent or Firm:
QINGDAO HUIZHI HAINA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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