CN103670469A - Expansion grouting anchor rod - Google Patents
Expansion grouting anchor rod Download PDFInfo
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- CN103670469A CN103670469A CN201310714349.7A CN201310714349A CN103670469A CN 103670469 A CN103670469 A CN 103670469A CN 201310714349 A CN201310714349 A CN 201310714349A CN 103670469 A CN103670469 A CN 103670469A
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- expansion
- anchor rod
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- tube
- grouting
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Abstract
The invention discloses an expansion grouting anchor rod which comprises an anchor rod assembly and a sleeve. The sleeve is connected with the anchor rod assembly in a sleeved and matched mode. A grouting tube is axially arranged in a threaded rod of the anchor rod assembly. The sleeve is of a hollow tubular structure integrally. The inlet end of the sleeve is provided with a locating sleeve matched with the anchor rod assembly. The other end of the sleeve is provided with a grouting hole. The outer circumferential surface of the sleeve is provided with a circle of concave expansion tube. The outer surface of the expansion tube is provided with circular teeth. The cross section of each circular tooth is of an isosceles triangle structure, and the top angles of the circular teeth are flush with the locating sleeve. The expansion grouting anchor rod is simple in structure and convenient to use. When the expansion grouting anchor rod is used for carrying out punching and anchoring on hard rocks, the expansion tube can be expanded by an expansion head and simultaneously the top angles of the circular teeth can be further embedded into a hole wall. When the expansion grouting anchor rod is used for carrying out punching and anchoring on soft coal beds, grouting operation can be carried out on the grouting tube through a grouter, so the bonding degree and stability between the soft coal beds near the hole wall can be enhanced.
Description
Technical field
What the present invention relates to is coal mine support hardware & tools processing and manufacturing field, is specifically related to a kind of expansion slip casting anchor stock.
Background technology
Coal enters deep mining, tunnel presents significant large deformation feature under pressure ring border, highland, particularly high seam is subject to the development heading of mining influence and impacts roadway with large deformation or soft rock large deformation tunnel, because lane space is narrow and small, the spiro rod length of conventional expanded bolt is limited, anchoring scope is little, when in the anchoring of coal seam place due to coal seam after the comparatively loose anchoring of most structure, in use procedure, be vulnerable to impact for a long time, thereby causing producing space between expansion bolt and hole wall causes bolt easily by integral body, to be pulled out, and on being anchored at lithosphere time, because the quality of common rock is comparatively hard, hole wall is comparatively smooth, bolt easily slides in inside, thereby make its forfeiture.
Summary of the invention
The object of the invention is to provide a kind of expansion slip casting anchor stock, and it can solve existing problem in background technology effectively.
In order to solve existing problem in background technology, it comprises anchor rod component and is socketed with it the sleeve pipe coordinating, in the screw rod of described anchor rod component, axially offer Grouting Pipe, described sleeve pipe integral body is the tubular structure of hollow, one end of its import department is provided with the positioning sleeve that spins and coordinate with anchor rod component, the other end of described sleeve pipe offers injected hole, a circle expansion tube concaves out on the periphery of described sleeve pipe, the arranged outside of this expansion tube has circle tooth, described circle tooth cross section is isosceles triangular structure, and on it, drift angle flushes with positioning sleeve.
The periphery place of described positioning sleeve extends outward the concentric back-up ring of a circle.
The other end of described sleeve pipe is provided with expansion head tube, the internal diameter of this expansion head tube is slightly larger than the internal diameter of expansion tube, its external diameter flushes with positioning sleeve with sleeve pipe, is provided with the expansion head coordinating with its lash piston in described expansion head tube, and this expansion head is fixed on the screw rod of anchor rod component.
Owing to having adopted above technical scheme, the present invention has following beneficial effect: simple in structure, easy to use, when the comparatively hard rock of quality is punched to anchoring, can when strutting circle expansion tube, expansion head make the upper drift angle that encloses tooth further be embedded in hole wall, thereby increased whole anchoring degree, also more firm with the combination of hole wall; And when anchoring is punched in the comparatively soft coal seam of quality, can be after anchoring, by grouting machine to the Grouting Pipe operation of being in the milk, and the slurry pouring in sleeve pipe can further penetrate in the crack on hole wall by the crack on sleeve pipe and injected hole, increase bondability and stability between near the weak seam of hole wall, further improved whole anchoring degree.
Accompanying drawing explanation
In order to be illustrated more clearly in the present invention, below in conjunction with accompanying drawing, embodiment is briefly described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial structurtes schematic diagram of Fig. 1.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Referring to Fig. 1-2, this specific embodiment is to be achieved by the following technical solutions, it comprises anchor rod component 1 and is socketed with it the sleeve pipe 2 coordinating, in the screw rod of described anchor rod component 1, axially offer Grouting Pipe 3, described sleeve pipe 2 integral body are the tubular structure of hollow, one end of its import department is provided with the positioning sleeve 4 that spins and coordinate with anchor rod component 1 screw thread, the other end of described sleeve pipe 2 offers injected hole 5, a circle expansion tube 21 concaves out on the periphery of described sleeve pipe 2, the arranged outside of this expansion tube 21 has circle tooth 6, described circle tooth 6 cross sections are isosceles triangular structure, on it, drift angle flushes with positioning sleeve 4.
The periphery place of described positioning sleeve 4 extends outward the concentric back-up ring of a circle 7.
The other end of described sleeve pipe 2 is provided with and expands head tube 22, the internal diameter of this expansion head tube 22 is slightly larger than the internal diameter of expansion tube 21, its external diameter flushes with positioning sleeve 4 with sleeve pipe 2, is provided with the expansion that coordinates with its lash piston 8 in described expansion head tube 22, and this expansion 8 is fixed on the screw rod of anchor rod component 1.
Embodiment 1
When anchoring is punched in the comparatively hard coal seam of quality, first on preposition, output the hole coordinating with sleeve pipe 2 gap sockets, screw rod is inserted in this hole, screw the nut on anchor rod component 1, make to expand a 8 outside axially-movable, when expanding head by expansion tube 21, expansion tube 21 is strutted, and be arranged on the upper drift angle that encloses tooth 6 on expansion tube 21, can further be embedded on hole wall, thereby realize the close-connected object of screw rod and hole.
Embodiment 2
When to quality, comparatively weak seam punches anchoring, first on preposition, output the hole coordinating with sleeve pipe 2 gap sockets, screw rod is inserted in this hole, screw the nut on anchor rod component 1, make to expand a 8 outside axially-movable, when expanding head by expansion tube 21, expansion tube 21 is strutted, because hole wall is now comparatively loose and have a large amount of cracks, circle tooth 6 can not well agree with hole wall, now the grouting port of slurry filling machine is docked with the screw rod in anchor rod component 1, preferably adopt early injection of rapid hardening slurry, early injection of rapid hardening slurry is injected in expansion tube 21 through the Grouting Pipe 3 on screw rod, early injection of the rapid hardening slurry being injected in expansion tube 21 is further penetrated in the gap of hole wall by the crack on expansion tube 21 and injected hole 5 under the pressure of slurry filling machine, increased the reliability that hole wall is connected with screw rod, and the stability that can also further increase near coal seam, hole is starched in the early injection of rapid hardening being penetrated in hole wall gap, improved greatly whole anchoring degree.
In the present embodiment due to for be the weak seam anchoring of punching, therefore at circle tooth 6, may exist with hole wall and agree with not firm phenomenon, so after completing slip casting back-out grouting port, the phenomenon that can cause sleeve pipe 2 integral body to be pushed out because hole internal pressure is higher, therefore after completing slip casting operation, should first press back-up ring 7, then slowly screw out grouting port, after grouting port and bolt depart from completely, because the pressure in hole is higher, can promote the early strong slurry outflow of a small amount of rapid hardening, continue to press back-up ring 720-40 second, can discharge remaining pressure completely, thereby realize the close-connected object in screw rod and hole.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art should be appreciated that its technical scheme that still can record aforementioned each embodiment modifies, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (3)
1. an expansion slip casting anchor stock, it is characterized in that it comprises anchor rod component and is socketed with it the sleeve pipe coordinating, in the screw rod of described anchor rod component, axially offer Grouting Pipe, described sleeve pipe integral body is the tubular structure of hollow, one end of its import department is provided with the positioning sleeve that spins and coordinate with anchor rod component, the other end of described sleeve pipe offers injected hole, a circle expansion tube concaves out on the periphery of described sleeve pipe, the arranged outside of this expansion tube has circle tooth, described circle tooth cross section is isosceles triangular structure, and on it, drift angle flushes with positioning sleeve.
2. a kind of expansion slip casting anchor stock according to claim 1, is characterized in that the periphery place of described positioning sleeve extends outward the concentric back-up ring of a circle.
3. a kind of expansion slip casting anchor stock according to claim 1, the other end that it is characterized in that described sleeve pipe is provided with expansion head tube, the internal diameter of this expansion head tube is slightly larger than the internal diameter of expansion tube, its external diameter flushes with positioning sleeve with sleeve pipe, in described expansion head tube, be provided with the expansion head coordinating with its lash piston, this expansion head is fixed on the screw rod of anchor rod component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714349.7A CN103670469B (en) | 2013-12-12 | 2013-12-12 | A kind of expansion slip casting anchor stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714349.7A CN103670469B (en) | 2013-12-12 | 2013-12-12 | A kind of expansion slip casting anchor stock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670469A true CN103670469A (en) | 2014-03-26 |
| CN103670469B CN103670469B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310714349.7A Expired - Fee Related CN103670469B (en) | 2013-12-12 | 2013-12-12 | A kind of expansion slip casting anchor stock |
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| CN (1) | CN103670469B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696792A (en) * | 2014-01-17 | 2014-04-02 | 山东科技大学 | Multi-stage conical synchronous expansion anchor rod |
| CN103982211A (en) * | 2014-05-08 | 2014-08-13 | 河南理工大学 | High-strength large-deformation piston-type resistance-increasing anchor rod |
| CN105626112A (en) * | 2016-01-08 | 2016-06-01 | 尤洛卡（山东）深部地压防治安全技术有限公司 | Support device based on built-in type constant-resistance device and use method thereof |
| CN106285746A (en) * | 2016-09-27 | 2017-01-04 | 中国恩菲工程技术有限公司 | Anchor pole and the liner plate anchor with anchor pole |
| CN112983519A (en) * | 2021-03-29 | 2021-06-18 | 河南理工大学 | High-pretightening-force anchor rod for actively and quickly realizing three-dimensional stress balance and anchoring method thereof |
| CN113107561A (en) * | 2021-05-25 | 2021-07-13 | 中国矿业大学 | Self-drilling type combined grouting anchor rod with grout stop plug and suitable for soft rock stratum |
| CN113294189A (en) * | 2021-07-28 | 2021-08-24 | 徐州祥瑞工程机械科技有限公司 | Grouting anchor rod |
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| JPH112100A (en) * | 1997-06-10 | 1999-01-06 | Tobishima Corp | Up-facing ground anchor and method for its constructing and setting in place |
| CN2895743Y (en) * | 2006-03-22 | 2007-05-02 | 中铁西南科学研究院有限公司 | All-screw thread non-metal composite pipe paste-injecting anchoring rod |
| CN201443408U (en) * | 2009-07-16 | 2010-04-28 | 李云义 | Expansion type grouting anchor rod |
| CN201924948U (en) * | 2011-02-21 | 2011-08-10 | 张子春 | Expansion type slotting anchor rod |
| CN202810881U (en) * | 2012-09-26 | 2013-03-20 | 山东科技大学 | Novel expandable type yielding prestress grouting anchor cable |
| CN203097914U (en) * | 2013-01-21 | 2013-07-31 | 蚌埠远博机械制造有限公司 | Novel expanding device of hollow anchor rod |
| CN103243714A (en) * | 2013-05-28 | 2013-08-14 | 唐山德泰机械制造有限公司 | High-strength pre-stressed anchor rod |
| CN203603941U (en) * | 2013-12-12 | 2014-05-21 | 辽宁工程技术大学 | Expansion grouting type anchor rod |
-
2013
- 2013-12-12 CN CN201310714349.7A patent/CN103670469B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH112100A (en) * | 1997-06-10 | 1999-01-06 | Tobishima Corp | Up-facing ground anchor and method for its constructing and setting in place |
| CN2895743Y (en) * | 2006-03-22 | 2007-05-02 | 中铁西南科学研究院有限公司 | All-screw thread non-metal composite pipe paste-injecting anchoring rod |
| CN201443408U (en) * | 2009-07-16 | 2010-04-28 | 李云义 | Expansion type grouting anchor rod |
| CN201924948U (en) * | 2011-02-21 | 2011-08-10 | 张子春 | Expansion type slotting anchor rod |
| CN202810881U (en) * | 2012-09-26 | 2013-03-20 | 山东科技大学 | Novel expandable type yielding prestress grouting anchor cable |
| CN203097914U (en) * | 2013-01-21 | 2013-07-31 | 蚌埠远博机械制造有限公司 | Novel expanding device of hollow anchor rod |
| CN103243714A (en) * | 2013-05-28 | 2013-08-14 | 唐山德泰机械制造有限公司 | High-strength pre-stressed anchor rod |
| CN203603941U (en) * | 2013-12-12 | 2014-05-21 | 辽宁工程技术大学 | Expansion grouting type anchor rod |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696792A (en) * | 2014-01-17 | 2014-04-02 | 山东科技大学 | Multi-stage conical synchronous expansion anchor rod |
| CN103982211A (en) * | 2014-05-08 | 2014-08-13 | 河南理工大学 | High-strength large-deformation piston-type resistance-increasing anchor rod |
| CN105626112A (en) * | 2016-01-08 | 2016-06-01 | 尤洛卡（山东）深部地压防治安全技术有限公司 | Support device based on built-in type constant-resistance device and use method thereof |
| CN105626112B (en) * | 2016-01-08 | 2019-01-04 | 尤洛卡（山东）环境工程有限公司 | A kind of suspension device and its application method based on built-in constant-resistance device |
| CN106285746A (en) * | 2016-09-27 | 2017-01-04 | 中国恩菲工程技术有限公司 | Anchor pole and the liner plate anchor with anchor pole |
| CN106285746B (en) * | 2016-09-27 | 2019-06-11 | 中国恩菲工程技术有限公司 | Anchor pole and liner plate anchor with anchor pole |
| CN112983519A (en) * | 2021-03-29 | 2021-06-18 | 河南理工大学 | High-pretightening-force anchor rod for actively and quickly realizing three-dimensional stress balance and anchoring method thereof |
| CN112983519B (en) * | 2021-03-29 | 2023-08-22 | 河南理工大学 | High-pretightening-force anchor rod capable of actively and rapidly realizing three-dimensional stress balance and anchoring method thereof |
| CN113107561A (en) * | 2021-05-25 | 2021-07-13 | 中国矿业大学 | Self-drilling type combined grouting anchor rod with grout stop plug and suitable for soft rock stratum |
| CN113107561B (en) * | 2021-05-25 | 2022-02-08 | 中国矿业大学 | Self-drilling type combined grouting anchor rod with grout stop plug and suitable for soft rock stratum |
| CN113294189A (en) * | 2021-07-28 | 2021-08-24 | 徐州祥瑞工程机械科技有限公司 | Grouting anchor rod |
| CN113294189B (en) * | 2021-07-28 | 2021-10-01 | 徐州祥瑞工程机械科技有限公司 | Grouting anchor rod |
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| CN103670469B (en) | 2016-08-17 |
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Granted publication date: 20160817 Termination date: 20161212 |
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