CN113669096A - Fiber composite material anchor rod structure for preventing nut from loosening and manufacturing method thereof - Google Patents
Fiber composite material anchor rod structure for preventing nut from loosening and manufacturing method thereof Download PDFInfo
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- CN113669096A CN113669096A CN202111065780.4A CN202111065780A CN113669096A CN 113669096 A CN113669096 A CN 113669096A CN 202111065780 A CN202111065780 A CN 202111065780A CN 113669096 A CN113669096 A CN 113669096A
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- thread
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- composite material
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- 239000000835 fiber Substances 0.000 title claims abstract description 73
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000004804 winding Methods 0.000 claims abstract description 42
- 238000009941 weaving Methods 0.000 claims abstract description 17
- 238000004873 anchoring Methods 0.000 claims abstract description 10
- 239000004831 Hot glue Substances 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims abstract 5
- 238000007598 dipping method Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009954 braiding Methods 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 238000009940 knitting Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 241001391944 Commicarpus scandens Species 0.000 abstract description 4
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 239000003292 glue Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses a nut looseness prevention fiber composite material anchor rod structure which comprises a plurality of parallel inner fiber yarns integrated into a bundle, wherein the inner fiber yarns are adhered to each other to form a rod body; winding fiber yarns are wound outside the rod body, and the winding fiber yarns are staggered into a net shape to form an outer weaving layer; the outer weaving layer is provided with a positive thread, the outer weaving layer is provided with a negative thread, and the positive thread and the negative thread are arranged adjacently; the positive thread is in threaded connection with a first nut, and the negative thread is in threaded connection with a second nut; the first nut and the second nut are tightly connected through hot glue. The invention is a non-metal resin fiber composite material, which is not easy to corrode, and has good tensile property and good shear resistance due to the internal fiber bundle, and is not easy to break under lateral force, and the arrangement of the positive and negative threads can effectively prevent the anchoring failure caused by the rotation of the screw rod.
Description
Technical Field
The invention relates to the technical field of anchor rods, in particular to a fiber composite anchor rod capable of preventing a nut from loosening and a manufacturing method thereof.
Background
In the working operations of coal mining, slope treatment, subway construction, tunnel excavation and the like, anchor bolt support is a safe and economic support mode. The technology is that holes are obliquely formed in a soil layer, an anchoring agent is poured after an anchor rod is embedded, and the load acting on a supporting structure is borne under the combined action of the friction force between an anchoring body and the soil, the bond stress between a pull rod and the anchoring body and the strength of the pull rod. The prior anchor rod is mostly made of deformed steel bars matched with an anchor disc and a nut, and metal is easy to corrode and rust at low level, so that the anchoring performance of the anchor rod is reduced. And the anti-stretching capability of the composite material is poor due to the adoption of plastics and the like, and the composite material is easy to break after being subjected to non-axial force. In addition, the existing anchor rods have the common characteristic that the threads are left-handed one-way threads or right-handed one-way threads. When the one-way thread is used, when the creep occurs under geological conditions, the anchor rod can rotate to cause the nut to loosen, and the anchor disc can be separated to cause the anchoring failure after the nut is loosened.
Disclosure of Invention
In order to solve the problems, the invention discloses a fiber composite material anchor rod structure for preventing a nut from loosening and a manufacturing method thereof. The fiber composite anchor rod structure for preventing the nut from loosening is made of non-metal resin fiber composite materials, is not easy to corrode, has good tensile property and toughness due to the fact that the fiber bundles inside the fiber composite anchor rod structure are woven by the outer layer fibers, can resist forces from different construction directions, is not easy to break due to lateral force, and can effectively prevent anchoring failure caused by rotation of the screw rod due to the fact that the positive threads and the negative threads are arranged.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a fiber composite material anchor rod structure for preventing nut loosening comprises a plurality of internal fiber yarns 1 which are parallel to each other and are integrated into a bundle, wherein the internal fiber yarns 1 are adhered to each other to form a rod body 2; winding fiber yarns are wound outside the rod body 2 and staggered into a net shape to form an outer weaving layer 3; the outer weaving layer 3 is provided with a positive thread 4, the outer weaving layer 3 is provided with a negative thread 5, and the positive thread 4 and the negative thread 5 are arranged adjacently; the positive thread 4 is in threaded connection with a first nut 6, and the negative thread 5 is in threaded connection with a second nut 7; the first nut 6 and the second nut 7 are fastened by hot glue.
In a further improvement, the positive thread 4 is formed by winding the outermost winding fiber filaments around the outer woven layer 3 at equal intervals; the reverse thread 5 is formed by winding the outer fiber yarn on the fiber yarn braided layer 3; the positive thread 4 and the negative thread 5 are adhered to the outer braid 3.
In a further improvement, the inner fiber filament 1, the winding fiber filament wound to form the outer woven layer 3 and the positive thread 4, and the outer fiber filament wound to form the negative thread 5 are all one of glass fiber filaments, carbon fiber filaments or polyethylene fiber filaments.
In a further improvement, the outer braided layer 3 is braided by a braiding and winding machine, and the braiding density is adjustable.
In a further improvement, an anchor disc 10 is mounted on the anchor rod structure, and the anchor disc 10 is positioned on the inner sides of the first nut 6 and the second nut 7; the anchor rod structure and the anchor disc jointly form an anchoring system.
A manufacturing method of a fiber composite material anchor rod structure for preventing nut loosening comprises the following steps:
step one, gathering the internal fiber filaments 1 into bundles, dipping the bundles, stretching the bundles to be straight into a rod shape to form a rod body 2;
step two, immediately performing primary positive thread 8 winding and primary negative thread 9 winding on the surface of the rod body 2 subjected to gum dipping by using winding fiber yarns, and then repeatedly weaving and interlacing to form an outer weaving layer 3, wherein the winding fiber yarns on the outermost side are wound at equal intervals to form positive threads 4, and redundant gum dipping of the rod body 2 completely dips the outer weaving layer 3; in order to ensure the depth and the width of the thread, twice thread winding is adopted, the thread depth is ensured by using thin thread winding for the first thread winding, and the thread width is ensured by using thick thread winding for the second thread winding;
step three, winding the outer fiber outside the outer woven layer 3 at equal intervals to form reverse threads 5 to form a primary product;
and step four, heating and curing the primary product to form the fiber composite material anchor rod structure for preventing the nut from loosening.
In a further improvement, in the second step, the first positive threads 8 and the first negative threads 9 are wound with the same pitch as the outermost positive threads 4 and the outermost negative threads 5.
Further improvement, the heating curing temperature is 60-120 ℃.
The invention has the advantages that:
1. the fiber composite material is a non-metal resin fiber composite material, is not easy to corrode, has good tension performance and good shear resistance due to the internal fiber bundles, is not easy to break under lateral force, and can effectively prevent the anchoring failure caused by the rotation of the screw rod due to the arrangement of the positive and negative threads;
2. and the threads are formed by winding twice, so that the thread depth is deeper, and the tensile strength of the nut is higher.
Drawings
Fig. 1 is a schematic cross-sectional structure view of a fiber composite anchor rod structure for preventing a nut from loosening according to the present invention;
FIG. 2 is a schematic structural view of a first nut;
fig. 3 is a schematic structural view of the second nut.
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
Examples
As shown in fig. 1-3, the bolt body of the fiber composite material bolt structure for preventing the nut from loosening provided by the invention is composed of inner fiber yarns which are radially arranged, the outermost layer of the bolt body is provided with threads which are made of spirally wound winding fiber yarns and outer fiber yarns, and the inner layer is provided with an outer woven layer which is made of winding fiber yarns. The outer layer thread is provided with a positive thread (left-handed thread) and a negative thread (right-handed thread), and the positive thread is adjacent to the negative thread.
The nut adopts two nuts, namely a first nut matched with the positive thread and a second nut matched with the negative thread. And the pitch and the depth of the screw thread of the nut are matched with those of the rod body. After the two nuts are fastened, the two nuts can be stuck together by hot melt adhesive, and only heating is needed when the two nuts are detached.
When the bolt is used, the bolt is firstly driven into the hole, the bolt disc is sleeved, the first nut is screwed, and then the second nut is screwed (in the installation mode, the external diameter of the positive thread is larger than that of the negative thread, so that the first nut and the positive thread can conveniently penetrate through the negative thread when being connected). Therefore, the bolt can not be loosened and separated no matter which direction the nut is rotated.
Or the first nut is inserted from the front end of the anchor rod and then connected with the positive thread, the second nut is inserted from the rear end of the anchor rod and then connected with the negative thread, and then the second nut is sleeved into the anchor disc, and the front end of the anchor rod penetrates through the punched anchor hole.
In the anchor rod structure, the positive threads and the negative threads are formed twice, the internal fiber filaments are dipped in glue (the glue is unsaturated polyester resin or epoxy resin) through a glue dipping tank for the first time, and then the internal fiber filaments are stretched and straightened and are bundled into a rod shape to obtain a rod body; and then, immediately performing left winding and right winding on the surface of the rod body subjected to gum dipping by using winding fiber yarns, forming twist-shaped first positive threads 8 and first negative threads 9 in a staggered manner, and then repeatedly weaving and staggering to form an outer weaving layer, wherein the winding fiber yarns on the outermost side are wound at equal intervals to form the positive threads 4. The winding fiber is completely impregnated by the redundant gum dipping on the rod body; forming an outer braided layer, and completely impregnating the outer braided layer by using redundant gum dipping on the rod body; uniformly and equidistantly tightening reverse threads on a woven layer by adopting outer fiber yarns; and heating and curing the fiber bundle subjected to the thread processing through twice equidistant thread tightening, and finally cutting and packaging to obtain a finished product.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. A fiber composite material anchor rod structure for preventing nut loosening is characterized by comprising a plurality of parallel inner fiber yarns (1) which are integrated into a bundle, wherein the inner fiber yarns (1) are adhered to each other to form a rod body (2); winding fiber yarns are wound outside the rod body (2), and the winding fiber yarns are interlaced into a net shape to form an outer weaving layer (3); the outer weaving layer (3) is provided with a positive thread (4), the outer weaving layer (3) is provided with a negative thread (5), and the positive thread (4) and the negative thread (5) are arranged adjacently; a first nut (6) is connected to the positive thread (4) in a threaded manner, and a second nut (7) is connected to the negative thread (5) in a threaded manner; the first nut (6) and the second nut (7) are tightly connected through hot glue.
2. A nut loosening prevention fiber composite material anchor rod structure according to claim 1, wherein the positive thread (4) is formed by winding the outermost winding fiber filament around the outer braid (3) at equal intervals; the reverse thread (5) is formed by winding a fiber woven layer (3) by outer fiber yarns; the positive thread (4) and the negative thread (5) are adhered to the outer knitting layer (3).
3. A nut loosening prevention fiber composite material anchor rod structure according to claim 2, wherein the inner fiber thread (1), the winding fiber thread wound to form the outer braid (3) and the positive thread (4), and the outer fiber thread wound to form the negative thread (5) are each one of a glass fiber thread, a carbon fiber thread, or a polyethylene fiber thread.
4. A nut loosening prevention fiber composite material anchor rod structure according to claim 1, wherein the outer braid (3) is braided by a braiding winder, and the braiding density is adjustable.
5. A nut loosening prevention fiber composite material anchor rod structure according to claim 1, wherein an anchor disc (10) is installed on the anchor rod structure, and the anchor disc (10) is positioned at the inner side of the first nut (6) and the second nut (7); the anchor rod structure and the anchor disc jointly form an anchoring system.
6. A manufacturing method of a fiber composite material anchor rod structure for preventing nut loosening is characterized by comprising the following steps:
step one, gathering the internal fiber filaments (1) into bundles, dipping the bundles, stretching and straightening the bundles into a rod shape to form a rod body (2);
step two, immediately performing primary positive thread (8) winding and primary negative thread (9) winding on the surface of the rod body (2) subjected to gum dipping by using winding fiber yarns, and then repeatedly weaving and interlacing to form an outer weaving layer (3), wherein the winding fiber yarns on the outermost side are wound at equal intervals to form positive threads (4), and redundant gum dipping of the rod body (2) is used for completely dipping the outer weaving layer (3); in order to ensure the depth and the width of the thread, twice thread winding is adopted, the thread depth is ensured by using thin thread winding for the first thread winding, and the thread width is ensured by using thick thread winding for the second thread winding;
step three, winding the outer fiber yarn outside the outer woven layer (3) at equal intervals to form reverse threads (5) to form a primary product;
and step four, heating and curing the primary product to form the fiber composite material anchor rod structure for preventing the nut from loosening.
7. The method for manufacturing the bolt structure of the fiber composite material for preventing the nut from loosening according to the claim 6, wherein in the second step, the first positive thread (8) and the first negative thread (9) are wound with the same pitch as the outermost positive thread (4) and the outermost negative thread (5).
8. A method of manufacturing a bolt structure of fibre composite material for preventing loosening of nut as claimed in claim 6, wherein the heating and curing temperature is 60-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065780.4A CN113669096A (en) | 2021-09-13 | 2021-09-13 | Fiber composite material anchor rod structure for preventing nut from loosening and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065780.4A CN113669096A (en) | 2021-09-13 | 2021-09-13 | Fiber composite material anchor rod structure for preventing nut from loosening and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113669096A true CN113669096A (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111065780.4A Pending CN113669096A (en) | 2021-09-13 | 2021-09-13 | Fiber composite material anchor rod structure for preventing nut from loosening and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113669096A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604525Y (en) * | 2003-02-27 | 2004-02-25 | 新汶矿业集团南冶煤矿有限责任公司 | Recoverable screw-thread steel anchor bolt |
| CN2630498Y (en) * | 2003-04-29 | 2004-08-04 | 南京奥沃科技发展有限公司 | Glass fiber reinforced anchoring bolt |
| JP3137118U (en) * | 2007-08-07 | 2007-11-15 | 俊之 倉守 | Bolts and nuts that do not loosen due to strong vibration |
| CN101733937A (en) * | 2008-11-25 | 2010-06-16 | 中国石油天然气集团公司 | Method for forming internal threads of composite material |
| CN106837977A (en) * | 2017-02-21 | 2017-06-13 | 宝鸡石油机械有限责任公司 | Double nuts structure with automatic loose proof function |
| US20180202122A1 (en) * | 2016-05-03 | 2018-07-19 | Guoan XU | A Sectional Modular Large-Deformation-Resistant Impact-Resistant Composite Rock Bolt and Its Assembling Method |
| CN109706928A (en) * | 2019-02-01 | 2019-05-03 | 贵州省材料产业技术研究院 | High-strength antitorque resin fibre composite material anchor shaft and preparation method thereof |
| CN209722869U (en) * | 2019-02-19 | 2019-12-03 | 新乡市景龙复合材料有限公司 | A kind of netted full thread glass fibre reinforced plastics rockbolts of high intensity |
-
2021
- 2021-09-13 CN CN202111065780.4A patent/CN113669096A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604525Y (en) * | 2003-02-27 | 2004-02-25 | 新汶矿业集团南冶煤矿有限责任公司 | Recoverable screw-thread steel anchor bolt |
| CN2630498Y (en) * | 2003-04-29 | 2004-08-04 | 南京奥沃科技发展有限公司 | Glass fiber reinforced anchoring bolt |
| JP3137118U (en) * | 2007-08-07 | 2007-11-15 | 俊之 倉守 | Bolts and nuts that do not loosen due to strong vibration |
| CN101733937A (en) * | 2008-11-25 | 2010-06-16 | 中国石油天然气集团公司 | Method for forming internal threads of composite material |
| US20180202122A1 (en) * | 2016-05-03 | 2018-07-19 | Guoan XU | A Sectional Modular Large-Deformation-Resistant Impact-Resistant Composite Rock Bolt and Its Assembling Method |
| CN106837977A (en) * | 2017-02-21 | 2017-06-13 | 宝鸡石油机械有限责任公司 | Double nuts structure with automatic loose proof function |
| CN109706928A (en) * | 2019-02-01 | 2019-05-03 | 贵州省材料产业技术研究院 | High-strength antitorque resin fibre composite material anchor shaft and preparation method thereof |
| CN209722869U (en) * | 2019-02-19 | 2019-12-03 | 新乡市景龙复合材料有限公司 | A kind of netted full thread glass fibre reinforced plastics rockbolts of high intensity |
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