CN217872865U - Rust-proof device for non-full-length anchoring bolt - Google Patents
Rust-proof device for non-full-length anchoring bolt Download PDFInfo
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- CN217872865U CN217872865U CN202222448695.2U CN202222448695U CN217872865U CN 217872865 U CN217872865 U CN 217872865U CN 202222448695 U CN202222448695 U CN 202222448695U CN 217872865 U CN217872865 U CN 217872865U
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Abstract
The utility model discloses a non-full-length anchor rod rust prevention device, which comprises a surrounding rock and an anchor rod, wherein the surrounding rock is provided with a drill hole, and the anchor rod is arranged in the drill hole of the surrounding rock; the anchor rod also comprises a tray and an antirust sleeve which are respectively arranged on the anchor rod; the stock includes the outer body of rod and interior body, installs the tray of fastening on the country rock on the outer body of rod, and interior body of rod is installed in the country rock drilling, and interior body of rod includes free section and anchor section, is filled with the anchoring agent between anchor section and country rock drilling, and the cover is equipped with rust-resistant sleeve pipe on the free section, scribbles lubricating oil between rust-resistant sleeve pipe and the free section. The utility model discloses a non-full length anchor stock anti-rust device both can adopt the form of initiative support through the stock, and control tunnel country rock warp, can prevent again to the outer shank of stock and the free section in the shank rust-resistant, prevents because of the stock fracture that the corrosion caused, avoids leading to the condition appearance that the tunnel seriously warp because of the stock is not enough to the anchor power of country rock. The device has the advantages of scientific and reasonable structure, safe and convenient use, simple structure and low cost.
Description
Technical Field
The utility model relates to a rust-resistant device of non-full length anchor stock belongs to coal mining technical field.
Background
With the increase of the mining depth and strength of coal resources, the deformation control and service time of the roadway is continuously improved, and more mines adopt an anchor net-spraying combined supporting mode to control the deformation of surrounding rocks of the roadway. The non-full-length anchoring bolt is more applied due to the economical efficiency and the construction rapidity, but a gap exists between the free section of the non-full-length anchoring bolt and a drilled hole of surrounding rock, so that the non-full-length anchoring bolt is easy to corrode under the action of surrounding rock fracture water and air, the ultimate tensile strength of the non-full-length anchoring bolt is reduced, when the stress of the surrounding rock is increased, part of the non-full-length anchoring bolt is easy to fracture, the supporting effect is weakened, the roadway surrounding rock is deformed too much, and the safe and efficient production of a mine is influenced. Therefore, improvement on the non-full-length anchor rod is urgently needed, and occurrence of corrosion of the non-full-length anchor rod is reduced.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a rust-resistant device of non-full length anchor stock strengthens the durability of stock, reduces the stock phenomenon of rupture because of the stock corrosion leads to.
In order to achieve the purpose, the anti-rust device for the non-full-length anchoring bolt comprises surrounding rock and an anchoring bolt, wherein a drilling hole is formed in the surrounding rock, and the anchoring bolt is installed in the drilling hole of the surrounding rock;
the anchor rod also comprises a tray and an antirust sleeve which are respectively arranged on the anchor rod;
the stock includes outer body of rod and interior body, install the tray of fastening on the country rock on the outer body of rod, interior body of rod is installed in the drilling, interior body of rod includes free section and anchor section, be filled with the anchoring agent between anchor section and country rock drilling, the cover is equipped with rust-resistant sleeve pipe on the free section, scribble lubricating oil between rust-resistant sleeve pipe and free section.
As an improvement, a nut used for fastening the tray is arranged on an outer rod body of the anchor rod.
As an improvement, the outer rod body, the tray and the nut are coated with antirust coatings.
As an improvement, the antirust coating adopts inorganic zinc-rich paint.
As an improvement, the material of the antirust sleeve is polyvinyl chloride.
As an improvement, the lubricating oil adopts general lithium-based lubricating grease.
As a refinement, the size of the tray is larger than the aperture size of the bore hole.
Compared with the prior art, the utility model discloses a non-full length anchor stock anti-rust device both can adopt the form of initiative support through the stock, and control tunnel country rock is out of shape, can rust-resistantly to the outer shank of stock and the free section in the pole body again, prevents because of the stock fracture that the corrosion caused, avoids leading to the condition appearance of the serious deformation of tunnel because of the stock is not enough to the anchor power of country rock. The device has the advantages of scientific and reasonable structure, safe and convenient use, simple structure and low cost.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a left side view of the utility model (with the surrounding rocks hidden);
in the figure: 1. the wall rock comprises 2 parts of wall rock, 3 parts of a tray, 4 parts of a nut, 4 parts of an anchor rod, 4-1 parts of an outer rod body, 4-2 parts of a free section, 4-3 parts of an anchoring section, 5 parts of an antirust sleeve, 6 parts of lubricating oil, 7 parts of an anchoring agent.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1 and 2, the rust prevention device for the non-full-length anchoring bolt comprises a surrounding rock 1, an anchoring bolt 4, a tray 2 and a rust prevention sleeve 5, wherein the tray 2 and the rust prevention sleeve 5 are respectively arranged on the anchoring bolt 4;
the wall rock 1 is provided with a drilled hole, the anchor rod 4 is installed in the drilled hole of the wall rock 1, the anchor rod 4 comprises an outer rod body 4-1 and an inner rod body, the outer rod body 4-1 is provided with a tray fastened on the wall rock 1, specifically, the tray 2 is provided with an installation hole, the aperture of the installation hole is matched with the diameter of the outer rod body 4-1, the size of the tray 2 is larger than the size of the hole opening of the drilled hole, the drilled hole is sealed through the tray 2, air outside the drilled hole is prevented from entering the drilled hole, and the corrosion of wall rock crack water and air to the inner rod body in the drilled hole is reduced;
the inner rod body of the anchor rod 4 is arranged in the drill hole and comprises a free section 4-2 and an anchoring section 4-3, an anchoring agent 7 is filled between the anchoring section 4-3 and the drill hole of the surrounding rock 1, so that the anchoring of the anchor rod 4 and the surrounding rock 1 is ensured, the free section 4-2 is sleeved with an antirust sleeve 5, and the antirust performance of the free section 4-2 of the inner rod body is further improved through the antirust sleeve 5;
lubricating oil 6 is coated between the antirust sleeve 5 and the free section 4-2, so that the anti-rusting performance of the free section 4-2 of the inner rod body is further improved, and the connecting lubricity of the antirust sleeve 5 and the free section 4-2 is improved.
The utility model discloses a rust-resistant device of non-full length anchor stock through tray 2 and the cooperation of rust-resistant sleeve pipe 5, has reduced the corrosion that takes place under the effect that the interior body of rod of drilling 4-2 is because of receiving country rock crack water and air, has guaranteed the limit tensile strength of stock, and when country rock stress increase, the stock is difficult for breaking, and it is effectual to strut, ensures the safe high-efficient production of mine.
As the improvement of the embodiment, the outer rod body 4-1 of the anchor rod 4 is provided with the nut 3 for fastening the tray 2, so that the connection sealing performance of the tray 2 and the surrounding rock 1 is improved, the structure is simple, and the assembly and disassembly are convenient.
As a further improvement of the embodiment, the outer rod body 4-1, the tray 2 and the nut 3 are all coated with antirust coatings, for example, inorganic zinc-rich coatings can be adopted, so that the outer rod has a good anticorrosion effect, and the anti-corrosion performance of the outer rod body 4-1 is improved.
As an improvement of the embodiment, the antirust sleeve 5 is made of PVC (polyvinyl chloride), and has stable performance and low cost; the lubricating oil 6 adopts general lithium-based lubricating grease, and has the advantages of readily available raw materials and low cost.
During installation, firstly, lubricating oil 6 is coated on the free section 4-2 of the inner rod body, anchoring agent is applied to the anchoring section 4-3 and the drilled hole of the surrounding rock 1, then the inner rod body of the anchor rod 4 is installed in the drilled hole of the surrounding rock 1, then the antirust sleeve 5 is installed, the antirust sleeve 5 is sleeved on the free section 4-2, finally, the tray 2 is installed on the outer rod body 4-1, and pretightening force is applied to the nut 3 to fasten the tray 2 on the surrounding rock 1.
When the device works, the rust-proof sleeve 5 can prevent water in the surrounding rock cracks from contacting the free section 4-2 of the anchor rod 4, and the lubricating oil 6 between the rust-proof sleeve 5 and the free section 4-2 can further isolate water and air to block the free section 4-2 of the anchor rod 4 from rusting; the outer rod body 4-1, the tray 2 and the nut 3 of the anchor rod 4 outside the surrounding rock 1 are rustproof by adopting inorganic zinc-rich coating, so that the anchor rod supporting structure is prevented from rusting due to the exposed part.
The utility model discloses a non-full length anchor stock anti-rust device both can adopt the form of initiative support through the stock, and control tunnel country rock warp, can prevent again to the outer shank of stock and the free section in the shank rust-resistant, prevents because of the stock fracture that the corrosion caused, avoids leading to the condition appearance that the tunnel seriously warp because of the stock is not enough to the anchor power of country rock. The device has the advantages of scientific and reasonable structure, safe and convenient use, simple structure and low cost.
The above description is only exemplary of the invention, and should not be taken as limiting the invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the invention should be included in the scope of the invention.
Claims (7)
1. A non-full-length anchor rod rust prevention device comprises surrounding rock (1) and an anchor rod (4), wherein a drill hole is formed in the surrounding rock (1), and the anchor rod (4) is installed in the drill hole of the surrounding rock (1);
the anti-rust anchor rod is characterized by further comprising a tray (2) and an anti-rust sleeve (5) which are respectively arranged on the anchor rod (4);
stock (4) are including outer body of rod (4-1) and interior pole body, install tray (2) of fastening on country rock (1) on the outer body of rod (4-1), interior body of rod is installed in the drilling, interior pole body is including free section (4-2) and anchor section (4-3), anchor section (4-3) are filled with anchor agent (7) with the drilling of country rock (1) within a definite time, and the cover is equipped with rust-resistant sleeve pipe (5) on free section (4-2), scribble lubricating oil (6) between rust-resistant sleeve pipe (5) and free section (4-2).
2. A rust inhibitive device for a non-full length anchor bolt according to claim 1, characterized in that the outer rod body (4-1) of said bolt (4) is fitted with a nut (3) for fastening the tray (2).
3. The rust preventor for the non-full-length anchor rod according to claim 2, characterized in that the outer rod (4-1), the tray (2) and the nut (3) are coated with rust preventives.
4. The rust preventor for the non-full-length anchor bolt according to claim 3, wherein the rust preventor is made of inorganic zinc-rich paint.
5. The rust preventor for the non-full-length anchor bolt according to claim 1, characterized in that the rust preventive sleeve (5) is made of polyvinyl chloride.
6. The rust preventor for the non-full-length anchor bolt according to claim 1, characterized in that the lubricating oil (6) is general lithium grease.
7. A non-full length anchor bolt rust preventative device according to claim 1, characterized in that the size of the tray (2) is larger than the bore hole size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222448695.2U CN217872865U (en) | 2022-09-16 | 2022-09-16 | Rust-proof device for non-full-length anchoring bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222448695.2U CN217872865U (en) | 2022-09-16 | 2022-09-16 | Rust-proof device for non-full-length anchoring bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217872865U true CN217872865U (en) | 2022-11-22 |
Family
ID=84082713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222448695.2U Active CN217872865U (en) | 2022-09-16 | 2022-09-16 | Rust-proof device for non-full-length anchoring bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217872865U (en) |
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2022
- 2022-09-16 CN CN202222448695.2U patent/CN217872865U/en active Active
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