CN111075486A - Recoverable anchor rod with external friction nails - Google Patents
Recoverable anchor rod with external friction nails Download PDFInfo
- Publication number
- CN111075486A CN111075486A CN201911394295.4A CN201911394295A CN111075486A CN 111075486 A CN111075486 A CN 111075486A CN 201911394295 A CN201911394295 A CN 201911394295A CN 111075486 A CN111075486 A CN 111075486A
- Authority
- CN
- China
- Prior art keywords
- external friction
- anchor rod
- nail
- friction nail
- recoverable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000008054 signal transmission Effects 0.000 claims abstract description 23
- 230000004927 fusion Effects 0.000 claims abstract description 13
- 238000012856 packing Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 12
- 238000005553 drilling Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011435 rock Substances 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
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- 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
- E21D20/00—Setting anchoring-bolts
-
- 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
- E21D21/0093—Accessories
-
- 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
- E21D21/02—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection having means for indicating tension
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a recyclable anchor rod with an external friction nail, which comprises a recyclable anchor rod, a drill bit, an expansion disc, an anchor head, a pneumatic tube, an anchor rod support, a nut, a spiral rib, an external friction nail outlet, an external friction nail, a protection hole, a signal transmitter, an axial force meter, a signal transmission line, a spring, a limiter, an upper gasket, a lower gasket and a fusion layer. The invention has the beneficial effects that: the external friction nail can be in the export of the external friction nail of the protruding under the impact of atmospheric pressure, can utilize high-pressure gas can be with in the external friction nail embedding ground body on every side, realize better anchor effect, the side of external friction nail all is fixed with an axial dynamometer and links together through signal transmission line and signal transmitter, be convenient for convey axial force signal, make signal transmitter can promote the fault disconnection to the fault input high pressure through signal transmission line, let external friction nail and recoverable stock separation, be convenient for extract recoverable stock in the later stage.
Description
Technical Field
The invention relates to a recyclable anchor rod, in particular to a recyclable anchor rod with an external friction nail, and belongs to the field of geotechnical engineering supporting structures.
Background
In the construction of roadways, tunnels, foundation pits and side slopes related to civil engineering, the surrounding rocks or surrounding soil bodies can deform greatly under the influence of the characteristics of the rock-soil bodies in the excavation range and the surrounding environment, great potential safety hazards are brought to construction and the use of subsequent building structures, and the rock-soil bodies in the excavation range are reinforced, so that the method has great significance. In the field of geotechnical engineering at the present stage, the anchor rod has the advantages of simple and convenient installation, small space required by construction, low manufacturing cost and the like, and is widely applied to the engineering fields of primary support or final support and the like of geotechnical bodies. Partial anchor rods realize the recovery of the anchor rods by arranging the recovery device, but the bearing capacity of the anchor rods is not improved, and in other words, the anchor rods are recovered by emphasizing the anchor rods on the surface of the anchor rods, and the effect of increasing the bearing capacity of the anchor rods is not achieved.
Disclosure of Invention
The invention aims to solve the problems and provide a recyclable anchor rod with an external friction nail.
The invention realizes the purpose through the following technical scheme: a recoverable anchor rod with an external friction nail comprises a recoverable anchor rod, a drill bit, an expansion disc, an anchor head, a pneumatic tube, an anchor rod support, a nut, a spiral rib, an external friction nail outlet, an external friction nail, a protection hole, a signal transmitter, an axial force meter, a signal transmission line, a spring, a limiter, an upper washer, a lower washer and a fusion layer; the top end of the recoverable anchor rod is fixed with an anchor head, the top end of the recoverable anchor rod is fixed with a drill bit, the other end of the drill bit is fixed with an expansion disc, the diameter of the expansion disc is between the minimum diameter and the maximum diameter of the drill bit, the recoverable anchor rod and the anchor head are internally provided with a pneumatic tube, the anchor rod bracket is arranged on the anchor head, the nut is arranged on the anchor head through threads, the outer wall of the recoverable anchor rod is fixedly provided with a spiral rib, the recoverable anchor rod is uniformly provided with a plurality of external friction nail outlets, the spiral rib and the external friction nail outlets are arranged in a staggered manner, the external friction nail is arranged inside the external friction nail outlet, the external friction nail can protrude the external friction nail outlet under the impact of air pressure, the recoverable anchor rod is provided with a protection hole, and the anchor head is internally provided with a signal transmitter, signal transmission ware and signal transmission line link together, the side of external friction nail all is fixed with an axial force meter, axial force meter and signal transmission line link together, the axial force meter links together through signal transmission line and signal transmission ware, the inside of external friction nail is provided with the fusion layer, be provided with top ring and lower backing ring on the inner wall of external friction nail export, the top ring slant outside is revealed to be embedded in the pole wall of recoverable stock and the backing ring is revealed to the inboard to one side and is embedded in the pole wall of recoverable stock, the stopper is in the same place with spring coupling, stopper and spring position in the inside of recoverable stock, the one end of stopper is supported on external friction nail and the stopper can be at the promotion lower motion of spring.
Further, in order to be able to use high-pressure gas to embed the external friction nails into the surrounding rock-soil mass, the external friction nails may protrude out of the external friction nail outlets under the impact of the gas pressure.
Furthermore, in order to enable the signal transmitter to input high voltage to the fusion layer through the signal transmission line to break the fusion layer, an axial force meter is fixed beside the external friction nail and connected with the signal transmitter through the signal transmission line.
Furthermore, in order to play a good fixing role for the externally-arranged friction nail when the externally-arranged friction nail is not subjected to high air pressure, the obliquely outer side of the upper gasket is exposed and embedded in the wall of the recyclable anchor rod, and the obliquely inner side of the lower gasket is exposed and embedded in the wall of the recyclable anchor rod.
Further, in order to drag the nail body at the bottom of the external friction nail when the external friction nail is embedded into the surrounding rock-soil body, one end of the limiting stopper is abutted against the external friction nail and the limiting stopper can move under the pushing of the spring.
Further, to facilitate drilling the retrievable anchor to the designed depth of the earth formation, the diameter of the expansion disc is between the minimum diameter and the maximum diameter of the drill bit.
Further, in order to protect the friction between the external friction nail outlet and the soil layer side wall, the spiral ribs and the external friction nail outlet are arranged in a staggered mode.
The invention has the beneficial effects that: the recoverable anchor rod has the advantages that the recoverable anchor rod is compact in structure connection, simple to use and reasonable in design, the external friction nail can protrude out of an external friction nail outlet under the impact of air pressure, the external friction nail can be embedded into surrounding rock-soil bodies by utilizing high-pressure gas, a better anchoring effect is realized, the axial force meters are fixed on the sides of the external friction nail and are connected together through the signal transmission line and the signal transmitter, the transmission of axial force signals is facilitated, the signal transmitter can input high pressure into the fusion layer through the signal transmission line to cause the fusion layer to be disconnected, the external friction nail is separated from the recoverable anchor rod, the recoverable anchor rod is convenient to extract at the later stage, the upper gasket is exposed obliquely from the outer side and embedded in the rod wall of the recoverable anchor rod, the lower gasket is exposed obliquely from the inner side and embedded in the rod wall of the recoverable anchor rod, and the external friction nail can be well fixed when the external friction nail is not, the external friction nail is prevented from moving due to vibration, one end of the limiting stopper abuts against the external friction nail, the limiting stopper can move under the pushing of the spring, when the external friction nail is embedded into the surrounding rock-soil body, the nail body is dragged at the bottom of the external friction nail, the external friction nail is prevented from retracting, the anchoring is more stable, the diameter of the expansion disc is between the minimum diameter and the maximum diameter of the drill bit, the recyclable anchor rod can be conveniently drilled to the designed depth of a soil layer, the drill bit can be protected, the spiral ribs and the external friction nail outlet are arranged in a staggered mode, the friction between the external friction nail outlet and the side wall of the soil layer can be protected, and the external friction nail outlet is prevented from being blocked by soil.
Drawings
FIG. 1 is an exploded view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the retrievable anchor rod of the present invention;
FIG. 3 is a schematic view of the overall structure of the external friction pin of the present invention;
FIG. 4 is a schematic view of the overall structure of the present invention;
in the figure: 1. the anchor rod can be recycled, the anchor rod comprises 2 parts of a drill bit, 3 parts of an expansion disc, 4 parts of an anchor head, 5 parts of a pneumatic tube, 6 parts of an anchor rod support, 7 parts of a nut, 8 parts of a spiral rib, 9 parts of an external friction nail outlet, 10 parts of an external friction nail, 11 parts of a protection hole, 12 parts of a signal transmitter, 13 parts of an axial force meter, 14 parts of a signal transmission line, 15 parts of a spring, 16 parts of a limiter, 17 parts of an upper gasket, 18 parts of a lower gasket, 19 parts of a fusion layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an external friction nail recyclable anchor rod comprises a recyclable anchor rod 1, a drill bit 2, an expansion disc 3, an anchor head 4, a pneumatic tube 5, an anchor rod bracket 6, a nut 7, a spiral rib 8, an external friction nail outlet 9, an external friction nail 10, a protection hole 11, a signal transmitter 12, an axial force meter 13, a signal transmission line 14, a spring 15, a stopper 16, an upper washer 17, a lower washer 18 and a fusing layer 19; the top end of the recoverable anchor rod 1 is fixed with an anchor head 4, the top end of the recoverable anchor rod 1 is fixed with a drill bit 2, the other end of the drill bit 2 is fixed with an expansion disc 3, the diameter of the expansion disc 3 is between the minimum diameter and the maximum diameter of the drill bit 2, the recoverable anchor rod 1 and the anchor head 4 are internally provided with a pneumatic tube 5, an anchor rod support 6 is installed on the anchor head 4, a nut 7 is installed on the anchor head 4 through threads, the outer wall of the recoverable anchor rod 1 is fixedly provided with a spiral rib 8, the recoverable anchor rod 1 is uniformly provided with a plurality of external friction nail outlets 9, the spiral rib 8 and the external friction nail outlets 9 are arranged in a staggered mode, the external friction nails 10 are installed inside the external friction nail outlets 9, and the external friction nails 10 can protrude the external friction nail outlets 9 under the impact of air pressure, the recyclable anchor rod 1 is provided with a protection hole 11, the inside of the anchor head 4 is provided with a signal transmitter 12, the signal transmitter 12 is connected with a signal transmission line 14, the side of the external friction nail 10 is fixed with an axial force meter 13, the axial force meter 13 is connected with the signal transmission line 14, the axial force meter 13 is connected with the signal transmitter 12 through the signal transmission line 14, the inside of the external friction nail 10 is provided with a fusion layer 19, the inner wall of the external friction nail outlet 9 is provided with an upper gasket 17 and a lower gasket 18, the slant outer side of the upper gasket 17 is exposed and embedded in the rod wall of the recyclable anchor rod 1, the slant inner side of the lower gasket 18 is exposed and embedded in the rod wall of the recyclable anchor rod 1, the stopper 16 is connected with a spring 15, and the stopper 16 and the spring 15 are positioned inside the recyclable anchor rod 1, one end of the stopper 16 abuts against the external friction pin 10 and the stopper 16 can move under the pushing of the spring 15.
The invention is a technical optimization scheme: the external friction nail 10 can protrude out of the external friction nail outlet 9 under the impact of air pressure; an axial force meter 13 is fixed at the side of the external friction nail 10, and the axial force meter 13 is connected with a signal transmitter 12 through a signal transmission line 14; the slant outer side of the upper gasket 17 is exposed and embedded in the wall of the recoverable anchor rod 1, and the slant inner side of the lower gasket 18 is exposed and embedded in the wall of the recoverable anchor rod 1; one end of the stopper 16 is abutted against the external friction pin 10, and the stopper 16 can move under the pushing of the spring 15; the diameter of the enlarged disk 3 is between the minimum diameter and the maximum diameter of the drill bit 2; the spiral ribs 8 and the external friction pin outlet 9 are arranged in a staggered mode.
When the invention is used, firstly checking whether a drill bit, an external friction nail and a recoverable anchor rod leak gas or not, checking whether a pressure tube is blocked or not, then externally connecting a drilling machine in place, connecting the recoverable anchor rod with the drilling machine, aligning the recoverable anchor rod to a designed drilling position, drilling the recoverable anchor rod to a designed depth of a soil layer, then connecting the recoverable anchor rod with an externally connected air pump, opening the air pump to start to aerate the hollow pressure tube, pushing the external friction nail to move outwards by high-pressure gas, leading the external friction nail to pass through an upper gasket and a lower gasket successively until a fusion layer in the middle of a nail body exposes out of the surface of the recoverable anchor rod, simultaneously exposing a stopper, dragging the nail body, installing a screw and an anchor rod support at the front end of the recoverable anchor rod, gradually applying certain prestress to tighten a nut, finishing the application of the recoverable anchor rod, dismounting the nut and the support, and introducing high pressure to promote the fracture of the fusion layer, and connecting an external pulling device to pull out the anchor rod.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a recoverable stock of external friction nail which characterized in that: the anchor rod comprises a recyclable anchor rod (1), a drill bit (2), an expansion disc (3), an anchor head (4), a pneumatic tube (5), an anchor rod support (6), a nut (7), a spiral rib (8), an external friction nail outlet (9), an external friction nail (10), a protection hole (11), a signal transmitter (12), an axial force meter (13), a signal transmission line (14), a spring (15), a limiter (16), an upper gasket (17), a lower gasket (18) and a fusion layer (19); the top end of the recoverable anchor rod (1) is fixed with an anchor head (4), the top end of the recoverable anchor rod (1) is fixed with a drill bit (2), the other end of the drill bit (2) is fixed with an expansion disc (3), the inside of the recoverable anchor rod (1) and the anchor head (4) is provided with a pneumatic tube (5), the anchor rod bracket (6) is installed on the anchor head (4), the nut (7) is installed on the anchor head (4) through threads, the outer wall of the recoverable anchor rod (1) is provided with a spiral rib (8), the recoverable anchor rod (1) is uniformly provided with a plurality of external friction nail outlets (9), the inside of the external friction nail outlets (9) is provided with external friction nails (10), the recoverable anchor rod (1) is provided with a protection hole (11), the inside of the anchor head (4) is provided with a signal transmitter (12), signal transmitter (12) and signal transmission line (14) link together, the inside of recoverable stock (1) is provided with axle power meter (13), axle power meter (13) and signal transmission line (14) link together, the inside of external friction nail (10) is provided with fusion layer (19), be provided with on the inner wall of external friction nail export (9) packing ring (17) and lower packing ring (18), stopper (16) link together with spring (15), stopper (16) and spring (15) are located the inside of recoverable stock (1).
2. The recyclable anchor rod with external friction nails as claimed in claim 1, wherein: the external friction nail (10) can protrude out of the external friction nail outlet (9) under the impact of air pressure.
3. The recyclable anchor rod with external friction nails as claimed in claim 1, wherein: an axial force meter (13) is fixed on the lateral side of the external friction nail (10), and the axial force meter (13) is connected with a signal transmitter (12) through a signal transmission line (14).
4. The recyclable anchor rod with external friction nails as claimed in claim 1, wherein: the slant outer side of the upper gasket (17) is exposed and embedded in the wall of the recyclable anchor rod (1), and the slant inner side of the lower gasket (18) is exposed and embedded in the wall of the recyclable anchor rod (1).
5. The recyclable anchor rod with external friction nails as claimed in claim 1, wherein: one end of the stopper (16) is abutted against the external friction nail (10) and the stopper (16) can move under the pushing of the spring (15).
6. The recyclable anchor rod with external friction nails as claimed in claim 1, wherein: the diameter of the expanding disc (3) is between the minimum diameter and the maximum diameter of the drill bit (2).
7. The recyclable anchor rod with external friction nails as claimed in claim 1, wherein: the spiral ribs (8) and the external friction nail outlet (9) are arranged in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394295.4A CN111075486B (en) | 2019-12-30 | 2019-12-30 | Recoverable anchor rod with external friction nails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394295.4A CN111075486B (en) | 2019-12-30 | 2019-12-30 | Recoverable anchor rod with external friction nails |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111075486A true CN111075486A (en) | 2020-04-28 |
| CN111075486B CN111075486B (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911394295.4A Active CN111075486B (en) | 2019-12-30 | 2019-12-30 | Recoverable anchor rod with external friction nails |
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| Country | Link |
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| CN (1) | CN111075486B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2470538Y (en) * | 2001-03-08 | 2002-01-09 | 张延策 | Novel anchoring rod |
| CN103527230A (en) * | 2013-10-28 | 2014-01-22 | 镇江安达煤矿专用设备有限公司 | Anchor bolt recycling device |
| CN205036397U (en) * | 2015-10-15 | 2016-02-17 | 山东科技大学 | But recycle cavity cling compound slip casting stock |
| CN206592140U (en) * | 2017-03-01 | 2017-10-27 | 山东科技大学 | A kind of recyclable pressure-relieving achor bar |
| CN208885325U (en) * | 2018-08-30 | 2019-05-21 | 沈阳建筑大学 | The interim anchor cable of Fuse Type of permanent support grouted anchor bar combined support structure |
-
2019
- 2019-12-30 CN CN201911394295.4A patent/CN111075486B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2470538Y (en) * | 2001-03-08 | 2002-01-09 | 张延策 | Novel anchoring rod |
| CN103527230A (en) * | 2013-10-28 | 2014-01-22 | 镇江安达煤矿专用设备有限公司 | Anchor bolt recycling device |
| CN205036397U (en) * | 2015-10-15 | 2016-02-17 | 山东科技大学 | But recycle cavity cling compound slip casting stock |
| CN206592140U (en) * | 2017-03-01 | 2017-10-27 | 山东科技大学 | A kind of recyclable pressure-relieving achor bar |
| CN208885325U (en) * | 2018-08-30 | 2019-05-21 | 沈阳建筑大学 | The interim anchor cable of Fuse Type of permanent support grouted anchor bar combined support structure |
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| Publication number | Publication date |
|---|---|
| CN111075486B (en) | 2021-06-15 |
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