CN111878133A - Integrated resin anchor rod assembly and mounting method thereof - Google Patents
Integrated resin anchor rod assembly and mounting method thereof Download PDFInfo
- Publication number
- CN111878133A CN111878133A CN202010814248.7A CN202010814248A CN111878133A CN 111878133 A CN111878133 A CN 111878133A CN 202010814248 A CN202010814248 A CN 202010814248A CN 111878133 A CN111878133 A CN 111878133A
- Authority
- CN
- China
- Prior art keywords
- rod body
- resin
- hollow rod
- sealing
- anchor rod
- 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.)
- Pending
Links
- 239000011347 resin Substances 0.000 title claims abstract description 53
- 229920005989 resin Polymers 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 238000004873 anchoring Methods 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims abstract description 9
- 239000011440 grout Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 3
- 238000011900 installation process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008092 positive effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
-
- 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
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (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)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses an integrated resin anchor rod component and an installation method thereof, wherein the anchor rod component comprises: the hollow rod body, the grout stopping plug, the base plate, the spherical nut and the pushing device are characterized in that a thrust ring, a resin anchoring agent and a sealing piston are sequentially arranged in the hollow rod body, the sealing piston comprises a bolt, a nut, a large sealing washer and a small sealing washer, and the sealing washers are in interference fit with the inner wall of the hollow rod body. Compared with the prior art, the invention has the following positive effects: the thrust ring, the sealing piston and the pushing device are matched, so that the resin anchoring agent is completely fed into a preset position, the optimal anchoring effect is ensured, and the thrust ring, the sealing piston and the pushing device are simple in structure and low in cost; the spherical nut can be used for two purposes, so that the anchor rod installation process is simpler and more convenient; the pushing device provided by the invention occupies a small space, and is very convenient to use in a narrow environment of a coal mine roadway.
Description
Technical Field
The invention relates to an integrated resin anchor rod assembly and an installation method thereof.
Background
At present, when the resin anchor rod is in actual use, the installation sequence is as follows: after the hole is drilled, an anchoring agent is manually installed in the hole, the anchor rod body is driven by the anchor rod drilling machine to rotate and stir the explosive cartridge to realize anchoring, and then the anchor rod is pre-tightened by screwing the nut. The anchor rod is easy to lose efficacy when being installed due to the influence of factors such as more resin cartridges, poor hole forming of the top plate, low torque of machines and tools and the like; meanwhile, the interfaces of the rotary anchor rod body and the screwing nut are not consistent, and the interfaces need to be replaced. The overall installation process is multiple, the operation is complex and time-consuming, and the operation of workers is difficult.
There are also integrated resin anchor rods, use the air pressure or water pressure to push out the resin anchoring agent in the hollow body of rod, but in the actual use, the air pressure or water pressure and joint sealing property of the hollow body of rod are bad, easy to relieve the pressure and cause the thrust to be insufficient and can't push out the resin anchoring agent; or the sealing performance of the piston is insufficient, resulting in permeation of water into the resin anchoring agent and reduction of the anchoring performance.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an integrated resin anchor rod assembly and an installation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: an integrated resin anchor assembly comprising: the hollow rod body, the grout stopping plug, the base plate, the spherical nut and the pushing device are characterized in that a thrust ring, a resin anchoring agent and a sealing piston are sequentially arranged in the hollow rod body, the sealing piston comprises a bolt, a nut, a large sealing washer and a small sealing washer, and the sealing washers are in interference fit with the inner wall of the hollow rod body.
The invention also provides an integrated resin anchor rod installation method, which comprises the following steps:
step one, after hole forming, sending an anchor rod into the top of an anchor hole and fixing;
pushing out the resin anchoring agent by using a pushing device, and simultaneously rotating a spherical nut by using an anchor rod trolley mechanical arm to fully mix the resin anchoring agent;
and step three, rotating the spherical nut and pushing forwards simultaneously after the resin anchoring agent is solidified, breaking the tail part of the spherical nut to enable the spherical nut to be screwed in, and pre-tightening the anchor rod to finish the installation.
Compared with the prior art, the invention has the following positive effects:
(1) the thrust ring, the sealing piston and the pushing device are matched, so that the resin anchoring agent is completely fed into a preset position, the optimal anchoring effect is ensured, and the thrust ring, the sealing piston and the pushing device are simple in structure and low in cost;
(2) the spherical nut can be used for two purposes, so that the anchor rod installation process is simpler and more convenient;
(3) the pushing device provided by the invention occupies a small space, and is very convenient to use in a narrow environment of a coal mine roadway.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a general view of an integrated resin anchor;
FIG. 2 is a schematic structural diagram of an integrated resin anchor rod;
FIG. 3 is a schematic structural view of a sealing piston;
FIG. 4 is a schematic structural view of a stop ring;
FIG. 5 is a schematic structural view of a ball nut;
FIG. 6 is a schematic view of the ejector;
fig. 7 is a schematic view of the operation of the push rod.
Detailed Description
An integrated resin bolt assembly, as shown in fig. 1, comprising: thrust collar 1, resin anchoring agent 2, cavity body of rod 3, sealed piston 4, stop thick liquid stopper 5, backing plate 6, ball nut 7, roller train 8, cable wire 9, spiral cylinder 10 etc. wherein:
the structure of the integrated resin anchor rod is shown in fig. 2 and comprises: the anti-thrust ring comprises a thrust collar 1, a resin anchoring agent 2, a hollow rod body 3, a sealing piston 4, a grout stop plug 5, a backing plate 6 and a spherical nut 7.
The structural design features of the main components of the integrated resin anchor rod are described in detail as follows:
(1) hollow rod 3 structure design
The existing hollow rod body has wave-shaped threads inside due to the processing technology, which is not beneficial to sealing; if only the thread at the end where the spherical nut is located is processed, the wave-shaped thread is not processed at the anchoring end, so that the bonding property between the resin anchoring agent and the hollow rod body is reduced, and the anchoring force is reduced.
By adopting a new processing technology, the outer part of the anchor rod is completely wave-shaped threads, and the inner part of the anchor rod is communicated with a straight hole, so that good sealing performance and enough anchoring force can be ensured.
(2) Structural design of sealing piston 4
The sealing piston structure is shown in fig. 3 and comprises: nut 41, small seal ring 42, nut gasket 43, big seal ring 44, bolt 45, wherein: two nuts 41 are juxtaposed on a bolt 45, a small seal 42 is disposed between the two nuts, a nut washer 43 is disposed between the small seal 42 and the second nut, and a large seal 44 is disposed between the large end of the bolt 45 and the nut.
Because the sealing gaskets are in interference fit with the inner wall of the hollow rod body, and one sealing piston is provided with two sealing gaskets which are one big and one small. The large sealing gasket is arranged behind and mainly used for sealing, and the small sealing gasket is arranged in the middle and used for keeping the sealing piston centered and assisting in sealing. Thus, the sealing performance of the sealing piston in a static state is ensured; when the sealing piston moves, the outer diameter of the sealing washer is larger than the inner diameter of the anchor rod body, so that the exceeding part of the sealing washer turns outwards, good sealing performance of the sealing piston is guaranteed during movement, backflow of the broken resin anchoring agent can be prevented, and the resin anchoring agent is guaranteed to completely enter a gap between the anchor rod body and the anchor hole.
Besides the sealing washer, the sealing piston adopts a national standard component, so that the assembly is convenient, and the manufacturing cost is low.
(3) Thrust ring 1 structural design
The thrust ring structure is shown in fig. 4, and the main body of the thrust ring structure is an iron ring 11, and three or four blades 12 are arranged on the iron ring. The blade has a cutting edge with a certain sharpness, so that the blade can not cut the resin anchoring agent in the transportation and storage processes of the resin anchor rod, but can easily and effectively puncture the resin anchoring agent when the sealing piston pushes out the resin anchoring agent.
And meanwhile, the blade can also prevent the sealing piston from being pushed out of the hollow rod body.
(4) Structural design of spherical nut 7
The structure diagram of the ball nut is shown in fig. 5, the existing ball nut is threaded, but the tail part of the ball nut of the invention is provided with a through hole 71 which has a thickness of 2mm, is not provided with threads, is slightly smaller than the inner diameter of the hollow rod body and is larger than the flexible steel cable.
Its advantages are as follows: the resin anchoring agent and the sealing piston can be prevented from leaking out from one end of the ball nut after being assembled.
Meanwhile, when the resin anchoring agent is installed, the anchor rod trolley mechanical arm only screws the spherical nut and does not move forwards, so that the spherical nut cannot be screwed forwards due to the obstruction of the tail part, but can drive the hollow rod body to rotate, and the function of stirring the resin anchoring agent is realized. After the resin anchoring agent is solidified, the mechanical arm moves forwards while screwing the spherical nut, breaks through the tail of the spherical nut, and enables the spherical nut to move forwards, so that the function of pre-tightening the hollow rod body is realized.
(6) Ejector design
The structure of the pushing-out device is shown in fig. 6, a flexible steel cable 9 is adopted, a motor drives a roller group 8 to send the steel cable 9 into the hollow rod body, a piston and a resin anchoring agent are pushed, and after the steel cable reaches a position, the roller group clamps the steel cable to prevent the steel cable from sliding off. After the hollow rod body is pre-tightened, the steel cable is loosened by the roller group, the motor drives the winding roller 10, and the steel cable is retracted.
The pushing device occupies a small space and is very suitable for being used in the narrow environment of a coal mine roadway.
The supporting process of the invention is as follows:
after the hole is formed, the anchor rod is sent into the top of the anchor hole and fixed, at the moment, the resin anchoring agent is pushed out by using the steel cable 9, and the working process of the push rod is shown in figure 7.
The resin anchoring agent 2 is broken under the action of the thrust ring 1, the sealing piston 4 and the steel cable 9; the spherical nut is rotated while being pushed out to sufficiently mix the resin anchoring agent.
And waiting for two minutes, rotating the spherical nut and pushing forwards simultaneously after the resin anchoring agent is solidified, breaking the tail part of the spherical nut to screw in the spherical nut, and pre-tightening the anchor rod to finish the installation.
Claims (6)
1. An integrate resin stock subassembly which characterized in that: the method comprises the following steps: the hollow rod body, the grout stopping plug, the base plate, the spherical nut and the pushing device are characterized in that a thrust ring, a resin anchoring agent and a sealing piston are sequentially arranged in the hollow rod body, the sealing piston comprises a bolt, a nut, a large sealing washer and a small sealing washer, and the sealing washers are in interference fit with the inner wall of the hollow rod body.
2. An integrated resin bolt assembly as claimed in claim 1, wherein: the push-out device comprises a roller set, a steel cable and a winding roller, wherein one end of the steel cable is turned around on the winding roller, and the other end of the steel cable is conveyed into the hollow rod body through the roller set and used for pushing the sealing piston.
3. An integrated resin bolt assembly as claimed in claim 1, wherein: the outside of the hollow rod body is completely wave-shaped thread, and the inside of the hollow rod body is communicated with a straight hole.
4. An integrated resin bolt assembly as claimed in claim 1, wherein: the thrust ring main body is an iron ring, and a blade is fixed on the iron ring.
5. An integrated resin bolt assembly as claimed in claim 1, wherein: the tail of the spherical nut is provided with a through hole with the diameter smaller than the inner diameter of the hollow rod body.
6. An integrated resin anchor rod installation method is characterized in that: the method comprises the following steps:
step one, after hole forming, sending an anchor rod into the top of an anchor hole and fixing;
pushing out the resin anchoring agent by using a pushing device, and simultaneously rotating a spherical nut by using an anchor rod trolley mechanical arm to fully mix the resin anchoring agent;
and step three, rotating the spherical nut and pushing forwards simultaneously after the resin anchoring agent is solidified, breaking the tail part of the spherical nut to enable the spherical nut to be screwed in, and pre-tightening the anchor rod to finish the installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010814248.7A CN111878133A (en) | 2020-08-13 | 2020-08-13 | Integrated resin anchor rod assembly and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010814248.7A CN111878133A (en) | 2020-08-13 | 2020-08-13 | Integrated resin anchor rod assembly and mounting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111878133A true CN111878133A (en) | 2020-11-03 |
Family
ID=73202599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010814248.7A Pending CN111878133A (en) | 2020-08-13 | 2020-08-13 | Integrated resin anchor rod assembly and mounting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111878133A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343635A (en) * | 2020-11-04 | 2021-02-09 | 中铁隆昌铁路器材有限公司 | Mining composite hollow resin anchor rod assembly and mounting method thereof |
| CN112554926A (en) * | 2020-12-11 | 2021-03-26 | 重庆大学 | Hollow charge anchor rod device |
| CN113417680A (en) * | 2021-07-15 | 2021-09-21 | 中铁隆昌铁路器材有限公司 | Anti-anchoring agent rollback piston, anchor rod and method |
| CN113958352A (en) * | 2021-10-21 | 2022-01-21 | 西南交通大学 | Anchor rod suitable for soft broken rock-soil body and construction method |
| CN114934795A (en) * | 2022-06-17 | 2022-08-23 | 中国矿业大学 | Similar model test anchor rod capable of self-injecting anchoring agent and applying pretightening force |
-
2020
- 2020-08-13 CN CN202010814248.7A patent/CN111878133A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343635A (en) * | 2020-11-04 | 2021-02-09 | 中铁隆昌铁路器材有限公司 | Mining composite hollow resin anchor rod assembly and mounting method thereof |
| CN112554926A (en) * | 2020-12-11 | 2021-03-26 | 重庆大学 | Hollow charge anchor rod device |
| CN113417680A (en) * | 2021-07-15 | 2021-09-21 | 中铁隆昌铁路器材有限公司 | Anti-anchoring agent rollback piston, anchor rod and method |
| CN113958352A (en) * | 2021-10-21 | 2022-01-21 | 西南交通大学 | Anchor rod suitable for soft broken rock-soil body and construction method |
| CN113958352B (en) * | 2021-10-21 | 2024-01-30 | 西南交通大学 | Anchor rod suitable for weak broken rock-soil body and construction method |
| CN114934795A (en) * | 2022-06-17 | 2022-08-23 | 中国矿业大学 | Similar model test anchor rod capable of self-injecting anchoring agent and applying pretightening force |
| CN114934795B (en) * | 2022-06-17 | 2023-12-12 | 中国矿业大学 | Similar model test anchor rod capable of self-injecting anchoring agent and applying pretightening force |
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