Title:
BLASTING ROOF AND SUSPENDER SCREW AND USING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2012/159528
Kind Code:
A1
Abstract:
The present invention is applicable to the technical field of screws and provides a blasting roof and suspender screw and a using method therefor. The screw comprises a stud, an expansion pipe, a main screw head and a frustum-shaped pushing part. The stud is arranged in one of the frustum-shaped pushing part and the main screw head, and is screwed with the other one. The expansion pipe is sleeved on the stud. The main screw head partially extends into the expansion pipe. When the main screw head and the frustum-shaped pushing part are screwed, the frustum-shaped pushing part pushes an inner wall at the lower end of the expansion pipe, so that the lower end of the expansion pipe gradually expands outwards. In the present invention, the main screw head and the frustum-shaped pushing part can be conveniently screwed through a mechanical tool, and a pressure is easily applied to the expansion pipe so as to make the expansion pipe expand; when density at an application end is high or a grade is high, the expansion pipe also can expand, and the screw is convenient to mount, time-saving, labor-saving, safe and firm; moreover, due to the frustum-shaped pushing part with concave and convex pushing surfaces at intervals, residues generated in the process of drilling at the application end can be accommodated, and a contact friction force can be increased to achieve a better fastening effect.
Inventors:
WEN SHAOSONG (CN)
Application Number:
PCT/CN2012/075148
Publication Date:
November 29, 2012
Filing Date:
May 07, 2012
Export Citation:
Assignee:
WEN SHAOSONG (CN)
International Classes:
F16B13/06; F16B23/00
Foreign References:
| CN2674175Y | 2005-01-26 | |||
| CN2505636Y | 2002-08-14 | |||
| US6457922B1 | 2002-10-01 | |||
| CN201615117U | 2010-10-27 | |||
| CN201818611U | 2011-05-04 | |||
| CN2463592Y | 2001-12-05 | |||
| CN2336126Y | 1999-09-01 | |||
| CN2646458Y | 2004-10-06 | |||
| CN102213254A | 2011-10-12 | |||
| CN202065299U | 2011-12-07 |
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
北京路浩知识产权代理有限公司 (CN)
北京路浩知识产权代理有限公司 (CN)
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Claims:
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