CN214697890U - Hollow grouting anchor rod - Google Patents
Hollow grouting anchor rod Download PDFInfo
- Publication number
- CN214697890U CN214697890U CN202120870183.8U CN202120870183U CN214697890U CN 214697890 U CN214697890 U CN 214697890U CN 202120870183 U CN202120870183 U CN 202120870183U CN 214697890 U CN214697890 U CN 214697890U
- Authority
- CN
- China
- Prior art keywords
- cone
- anchor rod
- boss
- soft rock
- hollow grouting
- 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.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a cavity slip casting stock belongs to soft rock construction technical field. A hollow grout bolt comprising: the cone head and the rod body are connected; the cone head is of a hollow structure and comprises a cone top end and a cone tail end connected with the rod body, the cone top end is in an opening shape, and the wall thickness of the cone top end is smaller than that of the cone tail end; the shaft body is also of a hollow structure, a boss is arranged at one end, far away from the conical head, of the shaft body, and the outer diameter of the boss is larger than that of the shaft body. The end of the hollow grouting anchor rod, which penetrates into the soft rock, is conical, and the pipe wall at the top end of the cone is sharp, so that the hollow grouting anchor rod is convenient to guide when entering the soft rock; the boss is arranged on the rod body, the boss does not enter soft rock along with the rod body, when the anchor rod is required to be adjusted in position and taken out, the outer tension is applied to the anchor rod through the boss to take out the anchor rod, and therefore the problem that the existing hollow grouting anchor rod is inconvenient to squeeze in and take out is solved.
Description
Technical Field
The utility model relates to a soft rock construction technical field, concretely relates to cavity slip casting stock.
Background
In the soft rock tunnel construction, the stability of the surrounding rock is guaranteed to be important. In soft rock, the stability of the surrounding rock can be measured by the deformation of the surrounding rock. Therefore, controlling the deformation of the surrounding rock also controls the stability of the surrounding rock. In the prior art, a glass fiber anchor rod is usually driven into a tunnel face to reinforce the tunnel face, but the glass fiber anchor rod is brittle, can only be dug out during construction, cannot be used for multiple times, and is poor in economical efficiency, other existing anchor rods are limited by shapes, and inconvenience is caused in the driving or taking-out process. Therefore, the problems that the cost of the face reinforcing anchor rod is high and the anchor rod is inconvenient to drive and take out exist in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cavity slip casting stock to solve the inconvenient problem of squeezing into and taking out of current face reinforcement stock.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a hollow grout bolt comprising: the inner parts of the cone head and the rod body are respectively provided with a grouting channel which is communicated;
the cone head comprises a cone top end and a cone tail end connected with the rod body, the cone top end is in an opening shape, and the wall thickness of the cone top end is smaller than that of the cone tail end; the end of the rod body far away from the conical head is provided with a boss, and the outer diameter of the boss is larger than that of the rod body.
The end of the hollow grouting anchor rod, which penetrates into the soft rock, is conical, so that the hollow grouting anchor rod is convenient to guide when entering the soft rock; the pipe wall at the top end of the cone is smaller than that at the tail end of the cone, so that grouting can flow out quickly; the boss is arranged on the rod body, the boss does not enter soft rock along with the rod body, when the anchor rod is required to be adjusted in position and taken out, the outer tension is applied to the anchor rod through the boss to take out the anchor rod, and therefore the problem that the anchor rod is inconvenient to squeeze in and take out when the face is reinforced is solved.
Furthermore, the outer wall of the conical head is provided with a plurality of wedge-shaped blocks.
The utility model discloses a set up the wedge and can make the soft rock in the conical head outside softer when the conical head gets into soft rock to make things convenient for the pole body that the external diameter is bigger to get into.
Furthermore, the outer wall of the conical head is provided with side holes, and the side holes are positioned between the adjacent wedge-shaped blocks.
The utility model discloses an offer the side opening at the outer wall of conical head and increase the export to more quick carry out the slip casting to soft rock.
Furthermore, a reinforcing rib is arranged at the connecting position of the cone tail end and the rod body.
The utility model discloses a set up the strengthening rib and avoid awl tail end and pole body junction atress too big and breaking occur.
Furthermore, a bayonet is formed between one surface of the boss close to the conical head and the rod body.
The utility model discloses be formed with the bayonet socket between boss and pole body to the stock is taken out to the boss application of force to the convenience.
Further, the cone tail end is welded with the shaft body.
Further, the cone tail end and the shaft body are integrally formed.
The utility model discloses following beneficial effect has:
(1) the end of the hollow grouting anchor rod, which penetrates into the soft rock, is conical, so that the hollow grouting anchor rod is convenient to guide when entering the soft rock; the pipe wall at the top end of the cone is smaller than that at the tail end of the cone, so that grouting can flow out quickly; the boss is arranged on the rod body, the boss does not enter soft rock along with the rod body, when the anchor rod is required to be adjusted in position and taken out, the outer tension is applied to the anchor rod through the boss to take out the anchor rod, and therefore the problem that the anchor rod is inconvenient to squeeze in and take out when the face is reinforced is solved.
(2) The utility model discloses a set up the wedge and can make the soft rock in the conical head outside softer when the conical head gets into soft rock to make things convenient for the pole body that the external diameter is bigger to get into.
Drawings
Fig. 1 is a schematic structural view of the hollow grouting anchor rod of the present invention;
fig. 2 is a sectional view of the hollow grouting anchor rod of the present invention;
in the figure: 10-cone head; 11-cone tip; 12-cone tail end; 13-a wedge block; 14-side holes; 15-reinforcing ribs; 20-a shaft; 21-a boss; 22-bayonet; 30-grouting channel.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1 and 2, a hollow grouting bolt includes: the interior of the connected conical head 10 and the interior of the connected shaft 20 are respectively provided with a grouting channel 30 which are communicated, and the grouting channel 30 can be externally connected with a pipeline for grouting.
The bit 10 includes a bit tip 11 that enters soft rock first and a bit tail 12 that connects to a shaft 20. The wall thickness of awl top 11 is less than the wall thickness of awl tail end 12 to reduce the area of contact of awl top 11 and soft rock when guaranteeing slip casting passageway 30 export size, can make awl head 10 get into soft rock fast, still make things convenient for slip casting to flow out fast.
The outer wall of conical head 10 is equipped with a plurality of wedges 13, is equipped with the closed angle on the wedge 13, and wedge 13 can make the soft rock in the conical head 10 outside softer at the in-process that gets into soft rock along with conical head 10 to make things convenient for pole body 20 to get into soft rock. A plurality of side openings 14 are seted up to the outer wall of conical head 10, and side opening 14 is located the position between adjacent wedge 13, and side opening 14 and the inboard intercommunication of conical head 10 increase the slip casting export to carry out the slip casting to the soft rock more fast.
The cone tail end 12 and the shaft 20 can be welded or integrally formed, so that the structural strength of the cone head 10 and the shaft 20 at the joint is ensured. And reinforcing ribs 15 can be arranged at the joints to increase the strength, so that the service life of the whole anchor rod is prolonged. And reduce the use cost of cavity slip casting stock to solve the problem that current stock is with high costs.
One section of the shaft 20 far away from the conical head 10 is provided with a boss 21, the outer diameter of the boss 21 is larger than that of the shaft 20, the boss 21 does not enter soft rock along with the shaft 20, when the position of the anchor rod needs to be adjusted to take out the anchor rod, external tension is applied to the anchor rod through the boss 21 to take out the anchor rod, and therefore the problem that the existing hollow grouting anchor rod is inconvenient to drive in and take out is solved. A bayonet 22 is formed between one surface of the boss 21 close to the bit 10 and the shank 20, and the bayonet 22 is groove-shaped, so that the bolt can be conveniently taken out by applying external force to the boss 21 through the bayonet 22.
The utility model discloses an operation process: (1) when the anchor rod is inserted, the rod body 20 and the soft rock form a certain angle to push the conical head 10 into the soft rock; (2) continuously applying external force to make the rod body 20 enter soft rock along with the conical head 10; (3) grouting into the anchor rod, wherein the grouting flows out through the opening of the cone top end 11 and the side hole 14; and (4) when the anchor rod needs to be taken out, applying external tension to the boss 21 through the bayonet 22 so as to drive the anchor rod to be taken out.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A hollow grouting bolt, comprising: the grouting device comprises a conical head (10) and a rod body (20) which are connected, wherein grouting channels (30) communicated with each other are respectively arranged in the conical head (10) and the rod body (20);
the cone head (10) comprises a cone top end (11) and a cone tail end (12) connected with the shaft body (20), and the wall thickness of the cone top end (11) is smaller than that of the cone tail end (12);
a boss (21) is arranged at one end, far away from the conical head (10), of the rod body (20), and the outer diameter of the boss (21) is larger than that of the rod body (20).
2. A hollow grouting bolt according to claim 1, characterised in that the outer wall of the cone head (10) is provided with a plurality of wedge blocks (13).
3. The hollow grouting anchor of claim 2, wherein the outer wall of the conical head (10) is provided with side holes (14), and the side holes (14) are positioned between the adjacent wedge blocks (13).
4. A hollow grouting bolt according to claim 3, characterised in that the connection position of the cone tail end (12) and the shank (20) is provided with a reinforcing rib (15).
5. The hollow grouting bolt according to claim 1, characterized in that a bayonet (22) is formed between the face of the boss (21) near the bit (10) and the shank (20).
6. A hollow grouting bolt according to any one of claims 1 to 5, characterised in that the cone trailing end (12) is welded to the shank (20).
7. A hollow grouting bolt according to any one of claims 1 to 5, characterised in that the cone trailing end (12) is formed integrally with the shank (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120870183.8U CN214697890U (en) | 2021-04-25 | 2021-04-25 | Hollow grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120870183.8U CN214697890U (en) | 2021-04-25 | 2021-04-25 | Hollow grouting anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214697890U true CN214697890U (en) | 2021-11-12 |
Family
ID=78533920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120870183.8U Expired - Fee Related CN214697890U (en) | 2021-04-25 | 2021-04-25 | Hollow grouting anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214697890U (en) |
-
2021
- 2021-04-25 CN CN202120870183.8U patent/CN214697890U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |