Title:
NPR ANCHOR ROD
Document Type and Number:
WIPO Patent Application WO/2021/082839
Kind Code:
A1
Abstract:
Disclosed is an NPR anchor rod, the NPR anchor rod comprising a rod body (1), a tray (2), and a lockset (3), wherein the rod body (1) is of an NPR spiral steel bar, multiple protruding spiral ribs are arranged on an outer surface of the NPR spiral steel bar, the spiral rib is of a spiral structure, and the tray (2) and the lockset (3) are directly arranged at a tail part of the NPR spiral steel bar in a sleeved manner. The NPR anchor rod can effectively solve the problems in the prior art of a common anchor rod being low in terms of elongation and being unable to meet the requirement of large deformation of surrounding rocks.
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Inventors:
HE MANCHAO (CN)
XIA MIN (CN)
GUO HONGYAN (CN)
LI HONGCHAO (CN)
XIA MIN (CN)
GUO HONGYAN (CN)
LI HONGCHAO (CN)
Application Number:
PCT/CN2020/117971
Publication Date:
May 06, 2021
Filing Date:
September 27, 2020
Export Citation:
Assignee:
HE MANCHAO (CN)
XIA MIN (CN)
XIA MIN (CN)
International Classes:
E21D21/00
Foreign References:
| CN211038693U | 2020-07-17 | |||
| CN104343460A | 2015-02-11 | |||
| CN108754339A | 2018-11-06 | |||
| CN201212399Y | 2009-03-25 | |||
| CN206418498U | 2017-08-18 | |||
| US20160003279A1 | 2016-01-07 |
Other References:
See also references of EP 3954862A4
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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