CN102852144B - A kind of novel anchor rod - Google Patents
A kind of novel anchor rod Download PDFInfo
- Publication number
- CN102852144B CN102852144B CN201210362342.9A CN201210362342A CN102852144B CN 102852144 B CN102852144 B CN 102852144B CN 201210362342 A CN201210362342 A CN 201210362342A CN 102852144 B CN102852144 B CN 102852144B
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- steel wire
- rod
- anchor rod
- sleeve pipe
- wiring connector
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Abstract
The invention provides a kind of novel anchor rod, comprise the body of rod and the anchored end and the anchor head that lay respectively at described body of rod two ends, the described body of rod comprises center sleeve and some peripheral steel wires, and it is peripheral that described steel wire spiral is coiled in described sleeve pipe; Described anchored end comprises sleeve and end cap, and described sleeve is sleeved on the described body of rod by interference fit, and described end cap closes the one end open of described sleeve pipe by screw thread or interference fit; Described anchor head comprises shutoff, wiring connector and stretch-draw cover, and described shutoff is hollow structure, and one end is with external screw thread, and one end is with internal thread, and described wiring connector is a circular ring structure.The invention has the beneficial effects as follows: the integration of anchor pole, anchor head, effectively improve the efficiency of anchoring.Particularly total breaks away from high-carbon steel bond pattern, improves mechanical stability and durability by novel attachment.Be widely used in mine working, traffic tunnel and all kinds of rock slope anchoring support engineering.
Description
Technical field
The present invention relates to a kind of novel anchor rod.
Background technology
The member system structure that anchor pole is reinforced as a kind of conventional Rock And Soil, is divided into the body of rod (being made up of materials such as steel strand, steel tendon, indented bars, steel pipes), tension ground tackle (anchor head), injecting cement paste etc. to form usually.Conventional twisted steel anchor rod ultimate tension is little, and intensity is low, Unit Weight weight, and steel strand anchor rod sectional area is little, bond stress is little, anchored force is weak, and needs Grouting Pipe, and construction sequence is loaded down with trivial details.And the mode that the various piece of these anchor poles commonly uses welding connects, along with the raising that engineering construction requires anchor pole stiffness and strength etc., high-carbon steel becomes the preferred of anchor pole material gradually, but the welding effect of high-carbon steel is bad, anchor pole is easy at welding position cracking in use, affects engineering construction quality.
Summary of the invention
The object of this invention is to provide the novel anchor rod that a kind of structure is simple, safe and reliable.
Technical scheme of the present invention is: a kind of novel anchor rod, comprise the body of rod and the anchored end and the anchor head that lay respectively at described body of rod two ends, the described body of rod comprises center sleeve and some peripheral steel wires, it is peripheral that described steel wire spiral is coiled in described sleeve pipe, described sleeve pipe is distributed with some grout holes, and described sleeve pipe has an annular groove near the position of described anchor head;
Described anchored end comprises sleeve and end cap, and described sleeve is sleeved on the described body of rod by interference fit, and described end cap closes the one end open of described sleeve pipe by screw thread or interference fit;
Described anchor head comprises shutoff, wiring connector and stretch-draw cover, described shutoff is hollow structure, one end is with external screw thread, one end is with internal thread, described wiring connector is a circular ring structure, upper annular average mark is furnished with the female through hole of band that some and described steel wire diameter is mated, described steel wire is connected with the through hole whorl on described wiring connector, described stretch-draw cover is the externally threaded hollow sleeve of band, the internal diameter of one end is larger, one end internal diameter is less, described wiring connector is positioned at one end of large diameter, be stuck in the step place that size internal diameter is excessive, described shutoff is connected from described stretch-draw cover large diameter end with described stretch-draw external threading, and to described wiring connector mineralization pressure.
Preferably, described anchor head is provided with some alignment pins, and described alignment pin penetrates described stretch-draw cover and hammers in described wiring connector.
Preferably, the described body of rod also comprises some circular orientation devices be enclosed within outside described sleeve pipe, described circular orientation device is a spline structure, the cross section of keyway is the circular arc type being greater than semicircle, diameter is suitable with described steel wire, described steel wire is embedded in the keyway of described circular orientation device, and the trend of keyway is consistent with the coiling angle of described steel wire.
Preferably, described circular orientation device is made up of polypropylene or polyethylene.
Preferably, described steel wire spiral coiling angle is 7 ~ 8 °.
Preferably, described steel wire is helix rib steel wire.
Preferably, described grout hole is distributed in the position that described circular orientation device installed by sleeve pipe.
Preferably, described steel wire is the steel wire of the steel wire of 9 7mm specifications or the steel wire of 8 8mm specifications or 7 9mm specifications or the steel wire of 6 10mm specifications.
The advantage that the present invention has and good effect are:
1, total has broken away from original bond pattern, and the body of rod, anchor head, anchored end are connected by other means and improve the stability of structure, when particularly adopting high-carbon steel as anchor pole material, solves a difficult problem for weld cracking;
2, employing high strength, underrelaxation steel tendon make anchor pole bearing power increase, and loss of prestress is few;
4, the bond stress due to helix rib steel wire is good, anchor pole and slurry adhesion stress can be made to improve greatly again through being wound around combination;
5, material saved by center tubing, do not stress during stretch-draw, indeformable, do not need separately to add Grouting Pipe and ensures grouting quality due to the support of circular orientation device, be adapted to cement system and synthetic resin system grout material;
6, novel anchor rod has the anchor pole feature integrated with ground tackle (head), does not need separately to add ground tackle and simplifies operational procedure, reduce manufacturing cost during use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of shank portion in the present invention;
Fig. 3 is the structural representation of middle sleeve part of the present invention;
Fig. 4 is the structural representation of anchored end part in the present invention;
Fig. 5 is the structural representation of anchor head part in the present invention;
Fig. 6 is the structural representation of wiring connector part in the present invention;
Fig. 7 is the sectional view of wiring connector part in the present invention;
Fig. 8 is the structural representation of circular orientation device part in the present invention.
In figure:
1, the body of rod 2, anchored end 3, anchor head 4, sleeve pipe
5, steel wire 6, grout hole 7, annular groove 8, sleeve
9, end cap 10, shutoff 11, wiring connector 12, stretch-draw cover
13, circular orientation device 14, alignment pin
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
As shown in Figures 1 to 8, the present invention includes the body of rod 1 and the anchored end 2 and the anchor head 3 that lay respectively at the described body of rod 1 two ends, the described body of rod 1 comprises center sleeve 4 and 9 peripheral 7mm helix rib steel wires 5, it is peripheral that described steel wire 5 is coiled in described sleeve pipe 4 with the helical of 7 °, the lay pitch formed is 500mm, described sleeve pipe 4 is distributed with grout hole 6, described sleeve pipe 4 has an annular groove 7 near the position of described anchor head 3, to be fixed on the position of the grout stopping device placed in described sleeve pipe 4, can be in the milk from the opening of described sleeve pipe 4 at described anchor head 3 during grouting, overflow from grout hole 6 again, grout stopping device can effectively prevent pulp-water from refluxing.
Described anchored end 2 comprises sleeve 8 and end cap 9, and described sleeve 8 is sleeved on the described body of rod 1 by interference fit, and described end cap 9 closes the one end open of described sleeve pipe 4 by screw thread or interference fit.
Described anchor head 3 comprises shutoff 10, wiring connector 11 and stretch-draw cover 12, described shutoff 10 is hollow structure, one end is with external screw thread, one end is with internal thread, described wiring connector 11 is a circular ring structure, upper annular average mark is furnished with the female through hole of some bands mated with steel wire diameter, described wiring connector 11 is threaded with described steel wire 5, described stretch-draw cover 12 is the externally threaded hollow sleeve of band, the internal diameter of one end is larger, one end internal diameter is less, described wiring connector 11 is positioned at one end of large diameter, be stuck in the step place that size internal diameter is excessive, described shutoff 10 is overlapped 12 large diameter ends from described stretch-draw and is overlapped 12 with described stretch-draw and be threaded, and to described wiring connector 11 mineralization pressure, lock the position of described wiring connector 11.Described anchor head 3 can directly be connected with tension tools such as jack, saves anchor device structure.
Described anchor head 3 is provided with 3 alignment pins 14, and annular spread is on described anchor head 3, and described alignment pin 14 penetrates described stretch-draw cover 12 and hammers in described wiring connector 11.
The described body of rod 1 also comprises some polypropylene circular orientation devices 13 be enclosed within outside described sleeve pipe 4, described circular orientation device 13 is a spline structure, the cross section of keyway is the circular arc type being greater than semicircle, diameter is suitable with described steel wire 5, described steel wire 5 is embedded in the keyway of described circular orientation device 13, and the trend of keyway is consistent with the coiling angle of described steel wire 5.Described steel wire 5 is mutually tangent in other places and is close to residence and states sleeve pipe 4 and be wound around, but due to described steel wire 5 softened with permanent position at described circular orientation device 13 place, so steel wire 5 is herein not tangent mutually and be not adjacent to described sleeve pipe 4.Described grout hole 6 is also be distributed in the position that described circular orientation device 13 installed by sleeve pipe 4.
Anchor pole of the present invention is the prestressed anchor new product that hollow grouting anchor is regenerated.Conventional φ 25-400G twisted steel anchor rod ultimate tension only has 140KN, and novel anchor rod φ 30mm ultimate tension is 578KN, is its more than 4 times; Because hollow structure Unit Weight saves 13%.Its sectional area of 1*7-21.6 steel strand anchor rod now promoted only has 285 square millimeters, and novel φ 30mm anchor pole net sectional area is 707 square millimeters, is its 2.5 times.Hollow structure not only can economize on material, and has grouting full, the advantages such as simple process.Particularly to be wrapped in the two ends as the body of rod of high-strength steel tow on hollow steel tube through well-designed anchoring termination and the organic fixing mechanism of ground tackle head, not only simplify constructing operation program, and stopped a difficult problem for high-carbon steel welding position cracking, form a kind of anchor pole good combination property, pulling capacity be high, loss of prestress is little, the innovative product of energy-saving material.Achieve anchor pole, anchor head integration, effectively improve the efficiency of anchoring.Particularly total breaks away from high-carbon steel bond pattern, improves mechanical stability and durability by novel attachment.Be widely used in mine working, traffic tunnel and all kinds of rock slope anchoring support engineering.
Above embodiment is to invention has been detailed description, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (10)
1. a novel anchor rod, comprise the body of rod (1) and lay respectively at anchored end (2) and the anchor head (3) at the described body of rod (1) two ends, it is characterized in that: the described body of rod (1) comprises center sleeve (4) and peripheral some steel wires (5), it is peripheral that described steel wire (5) is spirally coiled in described sleeve pipe (4), described sleeve pipe (4) is distributed with some grout holes (6), described sleeve pipe (4) has an annular groove (7) near the position of described anchor head (3);
Described anchored end (2) comprises sleeve (8) and end cap (9), described sleeve (8) is sleeved on the described body of rod (1) by interference fit, and described end cap (9) closes the one end open of described sleeve pipe (4) by screw thread or interference fit;
Described anchor head (3) comprises shutoff (10), wiring connector (11) and stretch-draw cover (12), described shutoff (10) is hollow structure, one end is with external screw thread, one end is with internal thread, described wiring connector (11) is a circular ring structure, upper annular average mark is furnished with the female through hole of band of some and described steel wire (5) diameter matches, described steel wire (5) is connected with the through hole whorl on described wiring connector (11), described stretch-draw cover (12) is the externally threaded hollow sleeve of band, the internal diameter of one end is larger, one end internal diameter is less, described wiring connector (11) is positioned at one end of large diameter, be stuck in the step place that size internal diameter is excessive, described shutoff (10) is threaded from described stretch-draw cover (12) large diameter end with described stretch-draw cover (12), and to described wiring connector (11) mineralization pressure.
2. novel anchor rod according to claim 1, it is characterized in that: described anchor head (3) is provided with some alignment pins (14), described alignment pin (14) penetrates described stretch-draw cover (12) and hammers in described wiring connector (11).
3. novel anchor rod according to claim 1 and 2, it is characterized in that: the described body of rod (1) also comprises and is somely enclosed within described sleeve pipe (4) circular orientation device (13) outward, described circular orientation device (13) is a spline structure, the cross section of keyway is the circular arc type being greater than semicircle, diameter is suitable with described steel wire (5), described steel wire (5) is embedded in the keyway of described circular orientation device (13), and the trend of keyway is consistent with the coiling angle of described steel wire (5).
4. novel anchor rod according to claim 3, is characterized in that: described circular orientation device (13) is made up of polypropylene or polyethylene.
5. novel anchor rod according to claim 1, is characterized in that: described steel wire (5) coiled coil angle is 7 ~ 8 °.
6. novel anchor rod according to claim 1 and 2, is characterized in that: described steel wire (5) is helix rib steel wire.
7. novel anchor rod according to claim 3, is characterized in that: described steel wire (5) is helix rib steel wire.
8. novel anchor rod according to claim 3, is characterized in that: described grout hole (6) is distributed in the position that described circular orientation device (13) installed by sleeve pipe (4).
9. novel anchor rod according to claim 1 and 2, is characterized in that: described steel wire (5) is the steel wire of the steel wire of 9 7mm specifications or the steel wire of 8 8mm specifications or 7 9mm specifications or the steel wire of 6 10mm specifications.
10. novel anchor rod according to claim 3, is characterized in that: described steel wire (5) is the steel wire of the steel wire of 9 7mm specifications or the steel wire of 8 8mm specifications or 7 9mm specifications or the steel wire of 6 10mm specifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362342.9A CN102852144B (en) | 2012-09-25 | 2012-09-25 | A kind of novel anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362342.9A CN102852144B (en) | 2012-09-25 | 2012-09-25 | A kind of novel anchor rod |
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| Publication Number | Publication Date |
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| CN102852144A CN102852144A (en) | 2013-01-02 |
| CN102852144B true CN102852144B (en) | 2015-12-23 |
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| CN201210362342.9A Active CN102852144B (en) | 2012-09-25 | 2012-09-25 | A kind of novel anchor rod |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898904A (en) * | 2014-03-06 | 2014-07-02 | 天津银龙预应力材料股份有限公司 | Hollow anchor rod |
| CN109098742B (en) | 2018-08-20 | 2019-11-08 | 中国矿业大学 | A kind of list anchor focuses the steel tendon and its method for protecting support of formula full length fastening |
| CN109853542B (en) * | 2019-03-29 | 2023-11-28 | 厦门源昌城建集团有限公司 | Slurry-preventing sleeve joint for pull-press composite anchor rod and anchor rod |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2707238C3 (en) * | 1977-02-19 | 1979-07-12 | Dyckerhoff & Widmann Ag, 8000 Muenchen | Corrosion-protected tension member for a prestressable anchor in solid rock |
| CN1086433C (en) * | 1997-07-18 | 2002-06-19 | 李志强 | Construction method to recover end pressure bolt support |
| CN201661304U (en) * | 2010-03-26 | 2010-12-01 | 张继红 | Recoverable end support type anchor rod |
| KR20120064435A (en) * | 2010-12-09 | 2012-06-19 | 김성희 | Packer for ground anchor |
| CN102322061B (en) * | 2011-06-21 | 2014-01-22 | 北京航空航天大学 | Construction device of end support anchor rod based on extruding-extending pore forming |
| CN102392444A (en) * | 2011-10-26 | 2012-03-28 | 中冶集团武汉勘察研究院有限公司 | Easily-recycled anchor rod device and recycling method |
| CN202809608U (en) * | 2012-09-25 | 2013-03-20 | 天津银龙预应力材料股份有限公司 | Novel anchor rod |
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