CN215408715U - Bonding type hollow anchor rod - Google Patents
Bonding type hollow anchor rod Download PDFInfo
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- CN215408715U CN215408715U CN202120401202.2U CN202120401202U CN215408715U CN 215408715 U CN215408715 U CN 215408715U CN 202120401202 U CN202120401202 U CN 202120401202U CN 215408715 U CN215408715 U CN 215408715U
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- anchor rod
- sleeve
- hollow anchor
- anchoring agent
- push rod
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Abstract
The utility model provides a bonding type hollow anchor rod which comprises a hollow anchor rod, wherein the front end of the hollow anchor rod is connected with an adapter, and a base plate and a nut are arranged at the rear end of the hollow anchor rod; a through hole is formed in the center of the adapter, and the rear end of the pressing push rod is inserted into the through hole of the adapter; the sleeve is sleeved outside the pressing push rod, the pressing push rod is fixedly connected with the sleeve, an anchoring agent storage space is arranged between the pressing push rod and the sleeve, and the anchoring agent is filled in the anchoring agent storage space; a plurality of anchoring agent extrusion holes are uniformly formed in the pipe wall of the sleeve; the sleeve is sleeved on the outer side of the pressing push rod; the anchoring agent is filled between the pressing push rod and the sleeve, so that the anchoring agent can be conveniently delivered to the front end in the anchor hole; applying a pressure torsion action to the hollow anchor rod, extruding the anchoring agent into the anchor hole through the anchoring agent extrusion hole on the sleeve, and realizing the quick anchoring of the front end of the anchor rod; complete the anchoring installation of the whole anchor rod quickly, realize the quick active or passive support of the surrounding rock and improve the construction efficiency and the construction quality of the anchor rod.
Description
Technical Field
The utility model belongs to the technical field of surrounding rock supporting engineering, and particularly relates to a bonding type hollow anchor rod.
Background
The full-length bonding type anchor rod is widely used in tunnels and underground engineering by wrapping most or all of the rod body in an anchor rod hole by the anchoring agent; the prior full-length bonding anchor rod is usually characterized in that a bagged anchoring agent is arranged at the front end of the anchor rod, and the outer package of the bagged anchoring agent is extruded and crushed by rotating and propelling the anchor rod body, so that slurry of the anchoring agent is mixed, and the anchoring of the front anchoring section of the anchor rod is realized; due to the uncertainty of the extrusion and crushing process of the anchoring agent, the anchoring agent slurry cannot be uniformly filled around the anchor rod, the adhesion between the anchor rod and the anchor hole is insufficient, and the anchoring quality is poor.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems in the prior art, the utility model provides a bonding type hollow anchor rod to solve the technical problems that in the existing bonding type anchor rod construction, anchoring agent grout cannot be uniformly filled around the anchor rod, bonding between the anchor rod and an anchor hole is insufficient, and the anchoring quality is poor.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a bonding type hollow anchor rod which comprises a hollow anchor rod, an adapter, a push rod, a sleeve, a base plate and a nut, wherein the adapter is arranged on the hollow anchor rod; the front end of the hollow anchor rod is connected with the adapter, and the backing plate and the nut are arranged at the rear end of the hollow anchor rod; a through hole is formed in the center of the adapter, and the rear end of the pressing push rod is inserted into the through hole of the adapter; the sleeve is sleeved outside the pressing push rod, the front end of the pressing push rod is fixedly connected with the front end of the sleeve, an anchoring agent storage space is arranged between the pressing push rod and the sleeve, and the anchoring agent is filled in the anchoring agent storage space; the wall of the sleeve is uniformly provided with a plurality of anchoring agent extrusion holes.
Furthermore, the outer side pipe wall of the sleeve is wrapped with tinfoil.
Furthermore, the front end of the sleeve is provided with a conical head.
Further, the adapter comprises a sleeve and a piston, and the rear end of the sleeve is fixedly connected with the front end of the hollow anchor rod; the piston is fixedly arranged at the front end of the sleeve and is arranged in the sleeve in a sliding fit mode.
Further, the sleeve is in threaded connection with the hollow anchor rod; the outer diameter of the piston is matched with the inner diameter of the sleeve.
Further, a shear pin is arranged between the pressure push rod and the sleeve; the rear end of the pressing push rod is provided with a first pin hole, and the sleeve is provided with a second cutting hole; the first pin hole and the second cutting hole are correspondingly arranged, and the shear pin sequentially penetrates through the second pin hole and the first pin hole.
Furthermore, the outside of cavity stock is led to the length and is provided with the connection external screw thread.
Furthermore, the rear end of the hollow anchor rod is provided with a grout outlet.
Further, the hollow anchor rod comprises a plurality of hollow anchor rod units, and the adjacent two hollow anchor rod units are fixedly butted through a connector.
Further, the connector may be a female connector or a non-female connector.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a bonding type hollow anchor rod.A connector is arranged at the front end of the hollow anchor rod, is connected with a pressing push rod by the connector, and is sleeved with a sleeve; the anchoring agent is filled between the pressing push rod and the sleeve, so that the anchoring agent can be conveniently delivered to the front end in the anchor hole; applying a pressure torsion action on the hollow anchor rod, extruding the anchoring agent slurry into the anchor hole by using the adapter through the anchoring agent extrusion hole on the sleeve, and realizing the quick anchoring of the front anchoring end of the anchor rod; through cavity stock slip casting, realize accomplishing whole stock anchor installation fast to anchor section full length bonding behind the stock, realize that the quick initiative of country rock or passive supporting improves stock efficiency of construction and construction quality.
Furthermore, by arranging the tinfoil on the outer side pipe wall of the sleeve, the anchoring effect of the front anchoring section of the anchor rod is effectively guaranteed through extruding holes of the anchoring agent after the anchoring agent slurry is fully mixed in the sleeve.
Furthermore, the front end of the sleeve is provided with the conical head, so that the anchor rod can be conveniently drilled, and the front end of the anchoring agent in the anchor hole can be ensured.
Furthermore, the adapter adopts the combination of the sleeve and the piston, and the piston can effectively extrude the anchoring agent into the anchor hole, so that the anchoring quality of the anchor rod is improved.
Furthermore, the sleeve and the hollow anchor rod are in threaded connection, so that the assembly type connection is realized, and the industrial production is facilitated.
Furthermore, a shear pin for locking the initial position of the pressure push rod is arranged between the pressure push rod and the sleeve, the shear pin is used for fixing the pressure push rod and the sleeve, the shear pin can be sheared only under a large pressure torsion acting force, and the anchoring agent can be pushed to a preset position at the front end of the anchor hole.
In summary, the utility model provides a bonding type hollow anchor rod, wherein the anchoring agent is placed in an inner cavity between a pressure push rod and a sleeve, so that the anchoring agent can be conveniently delivered to the front end in an anchor hole; rotating the exposed end of the hollow anchor rod by using a mechanical tool to enable the hollow anchor rod and the adapter to rotate, shearing off the shear pin under the action of pressure and torsion, extruding the anchoring agent in the sleeve by a piston at the front end of the adapter along the pressure push rod in a forward mode, extruding the tin paper by the anchoring agent under the action of pressure, and uniformly extruding the tin paper by the anchoring agent extrusion holes; an anchoring agent is reserved in the sleeve to fix the anchor rod and the steel pipe; the uniformly mixed anchoring agent enables the front anchoring section of the anchor rod to be quickly anchored, a base plate and a nut can be installed after the anchor rod which is not more than 60s waits for installation time, certain prestress can be applied in advance, then the hollow anchor rod is used for grouting, the full-length bonding of the rear anchoring section of the anchor rod is realized, the anchoring installation of the whole anchor rod is quickly completed, the quick active or passive support of surrounding rock is realized, and the construction efficiency and the construction quality of the anchor rod are improved; the anchor rod can be used as a system anchor rod of a low-prestress anchor rod and a non-prestress anchor rod, has wide applicable stratum, can greatly shorten the construction time of the system anchor rod, improve the construction quality of the anchor rod, give full play to the strength and self-supporting capacity of surrounding rocks, provide safety guarantee for the construction of tunnels and underground engineering, and can also optimize the construction process; the front anchoring section of the anchor rod is anchored by an anchoring agent, and the rear anchoring section is anchored by grouting, so that the supporting engineering cost can be effectively controlled.
Drawings
Fig. 1 is a schematic view showing the overall structure of a bonding type hollow anchor rod according to the present invention;
fig. 2 is an anchoring agent packing device in the bonding type hollow anchor rod according to the present invention;
fig. 3 is a schematic view illustrating the construction of an adapter in a bonding-type hollow anchor according to the present invention;
fig. 4 is a schematic view of the bonding type hollow anchor rod according to the present invention in a use state.
The anchor rod comprises a hollow anchor rod 1, an adapter 2, a pressure push rod 3, a sleeve 4, a base plate 5, a nut 6, a conical head 7 and an anchoring agent 8, wherein the hollow anchor rod is connected with the adapter through a bolt; 11 a hollow anchor rod unit, 12 a connector; 21 sleeve, 22 piston, 41 anchoring agent extrusion hole.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1-4, the present invention provides an adhesive hollow anchor rod, which comprises a hollow anchor rod 1, an adapter 2, a push rod 3, a sleeve 4, a backing plate 5 and a nut 6; the front end of the hollow anchor rod 1 is connected with the adapter 2, and the backing plate 5 and the nut 6 are arranged at the rear end of the hollow anchor rod 1; a through hole is formed in the center of the adapter 2, and the rear end of the push rod 3 is inserted into the through hole of the adapter 2; the sleeve 4 is sleeved outside the push rod 3, the front end of the push rod 3 is fixedly connected with the front end of the sleeve 4, an anchoring agent storage space is arranged between the push rod 3 and the sleeve 4, and an anchoring agent 8 is filled in the anchoring agent storage space; a plurality of anchoring agent extrusion holes 41 are uniformly arranged on the wall of the sleeve 4.
The outer side pipe wall of the sleeve 4 is wrapped with tinfoil; the front end of the sleeve 4 is provided with a conical head 7.
The adapter 2 comprises a sleeve 21 and a piston 22, and the rear end of the sleeve 21 is fixedly connected with the front end of the hollow anchor rod 1; the piston 22 is fixedly arranged at the front end of the sleeve 21, and the piston 22 is arranged in the sleeve 4 in a sliding fit manner; the sleeve 21 is in threaded connection with the hollow anchor rod 1; the outer diameter of the piston 22 is matched to the inner diameter of the sleeve 21.
A shear pin is arranged between the push rod 3 and the sleeve 21; the rear end of the push rod 3 is provided with a first pin hole, and the sleeve 21 is provided with a second cutting hole; the first pin hole and the second cutting hole are correspondingly arranged, and the shear pin sequentially penetrates through the second pin hole and the first pin hole.
The outer side of the hollow anchor rod 1 is provided with a connecting external thread; the rear end of the hollow anchor rod 1 is provided with a grout outlet; the hollow anchor rod 1 comprises a plurality of hollow anchor rod units, and the adjacent hollow anchor rod units are fixedly butted by adopting a connector 12; the connector 12 may be a female connector or a non-female connector.
Principle of operation
According to the bonding type hollow anchor rod, the anchoring agent is placed in the inner cavity between the pressing push rod and the sleeve, so that the anchoring agent can be conveniently delivered to the front end in the anchor hole; rotating the exposed end of the hollow anchor rod by using a mechanical tool to enable the hollow anchor rod and the adapter to rotate, shearing off the shear pin under the action of pressure and torsion, extruding the anchoring agent in the sleeve by a piston at the front end of the adapter along the pressure push rod in a forward mode, extruding the tin paper by the anchoring agent under the action of pressure, and uniformly extruding the tin paper by the anchoring agent extrusion holes; an anchoring agent is reserved in the sleeve to fix the anchor rod and the steel pipe; the uniformly mixed anchoring agent enables the front anchoring section of the anchor rod to be quickly anchored, a base plate and a nut can be installed after the anchor rod which is not more than 60s waits for installation time, certain prestress can be applied in advance, then the hollow anchor rod is used for grouting, the full-length bonding of the rear anchoring section of the anchor rod is realized, the anchoring installation of the whole anchor rod is quickly completed, the quick active or passive support of surrounding rock is realized, and the construction efficiency and the construction quality of the anchor rod are improved; the anchor rod can be used as a system anchor rod of a low-prestress anchor rod and a non-prestress anchor rod, has wide applicable stratum, can greatly shorten the construction time of the system anchor rod, improve the construction quality of the anchor rod, give full play to the strength and self-supporting capacity of surrounding rocks, provide safety guarantee for the construction of tunnels and underground engineering, and can also optimize the construction process; the front anchoring section of the anchor rod is anchored by an anchoring agent, and the rear anchoring section is anchored by grouting, so that the supporting engineering cost can be effectively controlled.
Examples
The embodiment provides a bonding type hollow anchor rod, which comprises a hollow anchor rod body and an anchor head connected to the rear end of the hollow anchor rod body and composed of a base plate and a nut, wherein an adapter is arranged at the front end part of the hollow anchor rod body, the adapter is provided with a through hole through which a pressure push rod body enters the hollow anchor rod body, the front part of the pressure push rod body is inserted into the through hole, and a shear pin for locking the initial relative position of the pressure push rod body is arranged between the adapter and the pressure push rod; the pressure push rod is provided with a cylindrical steel pipe, the steel pipe is uniformly provided with a plurality of round holes, the round holes are sealed by tinfoil, and the front end of the adapter is provided with a cylindrical piston. The front end of the pressure push rod is provided with a conical head, and the anchoring agent is placed in the steel pipe. Under the protection of the conical head, the anchoring agent is conveniently sent to the top end in the anchor hole; the anchoring agent adopts a plurality of roll-shaped anchoring agents, the roll-shaped anchoring agents comprise resin daub rolls and curing agent rolls, and the resin daub rolls and the curing agent rolls are arranged at intervals.
During construction, the exposed end of the hollow anchor rod body is rotated by using a mechanical tool, so that the hollow anchor rod body and the adapter 3 are rotated, the shear pin is cut off under the pressure-torsion acting force, the piston at the front end of the adapter moves forwards along the pressure push rod to extrude the anchoring agent in the steel pipe, the anchoring agent breaks through the tinfoil under the pressure action, and the tinfoil is uniformly extruded out of the small holes. And an anchoring agent is reserved in the steel pipe to fix the anchor rod and the steel pipe. The evenly mixed anchoring agent enables the front anchoring section L1 of the anchor rod to be rapidly anchored, a backing plate and a nut can be installed after the anchor rod with the length of no more than 60s waits for installation time, certain prestress can be applied in advance, then grouting is carried out through the rod body of the hollow anchor rod, the full-length bonding of the rear anchoring section L2 of the anchor rod is realized, the anchoring installation of the whole anchor rod is rapidly completed, the rapid active or passive support of surrounding rock is realized, and the construction efficiency and the construction quality of the anchor rod are improved;
the connector is composed of a front piston and a rear sleeve, and the sleeves are fixedly arranged on the front end part of the hollow anchor rod body through internal threads. The main diameter of the piston is slightly smaller than the diameter of the steel pipe.
The whole length of the hollow anchor rod body is provided with a connecting external thread, and a pair of grout outlet holes are formed in the rear anchoring section L2 rod body. Can be in an integral type or an assembled type. Referring to fig. 4, the hollow anchor rod body is formed by butt-jointing at least two hollow anchor rod body units through connectors with or without holes.
The utility model relates to a bonding type hollow anchor rod, which comprises a hollow anchor and an anchor head connected to the rear end of the hollow anchor rod and composed of a base plate and a nut, wherein an adapter is arranged at the front end part of the hollow anchor rod, the adapter is provided with a through hole for enabling a pressure push rod body to enter the hollow anchor rod body, the front part of the pressure push rod body is inserted into the through hole, and a shear pin for locking the initial relative position of the pressure push rod body is arranged between the adapter and the pressure push rod; a cylindrical steel pipe is arranged on the pressing push rod, a plurality of round holes are uniformly arranged on the steel pipe, the round holes are sealed by tinfoil, and a cylindrical piston is arranged at the front end of the adapter; the surrounding rock rapid active or passive supporting can be achieved, the construction efficiency and the construction quality of the anchor are improved, and the supporting engineering cost is effectively controlled.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. A bonding type hollow anchor rod is characterized by comprising a hollow anchor rod (1), an adapter (2), a pressing push rod (3), a sleeve (4), a base plate (5) and a nut (6); the front end of the hollow anchor rod (1) is connected with the adapter (2), and the backing plate (5) and the nut (6) are arranged at the rear end of the hollow anchor rod (1); a through hole is formed in the center of the adapter (2), and the rear end of the push rod (3) is inserted into the through hole of the adapter (2); the sleeve (4) is sleeved on the outer side of the push rod (3), the front end of the push rod (3) is fixedly connected with the front end of the sleeve (4), an anchoring agent storage space is arranged between the push rod (3) and the sleeve (4), and the anchoring agent (8) is filled in the anchoring agent storage space; the wall of the sleeve (4) is uniformly provided with a plurality of anchoring agent extrusion holes (41).
2. A bonding type hollow anchor rod according to claim 1, characterized in that the outer wall of the sleeve (4) is wrapped with tin foil.
3. A bonding-type hollow anchor according to claim 1, characterized in that the front end of the sleeve (4) is provided with a conical head (7).
4. A bonding type hollow anchor rod according to claim 1, wherein the adapter (2) comprises a sleeve (21) and a piston (22), the rear end of the sleeve (21) is fixedly connected with the front end of the hollow anchor rod (1); the piston (22) is fixedly arranged at the front end of the sleeve (21), and the piston (22) is arranged in the sleeve (4) in a sliding fit manner.
5. A bonding type hollow anchor rod according to claim 4, characterized in that the sleeve (21) is in threaded connection with the hollow anchor rod (1); the outer diameter of the piston (22) is matched with the inner diameter of the sleeve (21).
6. A bonding type hollow anchor rod according to claim 4, characterized in that a shear pin is provided between the push rod (3) and the sleeve (21); the rear end of the pressing push rod (3) is provided with a first pin hole, and the sleeve (21) is provided with a second cutting hole; the first pin hole and the second cutting hole are correspondingly arranged, and the shear pin sequentially penetrates through the second pin hole and the first pin hole.
7. A bonding type hollow anchor rod according to claim 1, characterized in that the hollow anchor rod (1) is provided with a connecting external thread throughout its outer length.
8. A bonding type hollow anchor rod according to claim 1, characterized in that the rear end of the hollow anchor rod (1) is provided with a grout hole.
9. A bonding type hollow anchor rod according to claim 1, characterized in that the hollow anchor rod (1) comprises a plurality of hollow anchor rod units, and the adjacent hollow anchor rod units are butt-jointed and fixed by a connector (12).
10. A cementitious hollow bolt according to claim 8, characterised in that the connector (12) is a female or non-female connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120401202.2U CN215408715U (en) | 2021-02-23 | 2021-02-23 | Bonding type hollow anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120401202.2U CN215408715U (en) | 2021-02-23 | 2021-02-23 | Bonding type hollow anchor rod |
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| Publication Number | Publication Date |
|---|---|
| CN215408715U true CN215408715U (en) | 2022-01-04 |
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ID=79667469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120401202.2U Active CN215408715U (en) | 2021-02-23 | 2021-02-23 | Bonding type hollow anchor rod |
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| Country | Link |
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| CN (1) | CN215408715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116181384A (en) * | 2023-03-28 | 2023-05-30 | 成都理工大学 | Quick hybrid anchoring pre-stressed anchor cable and construction method thereof |
-
2021
- 2021-02-23 CN CN202120401202.2U patent/CN215408715U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116181384A (en) * | 2023-03-28 | 2023-05-30 | 成都理工大学 | Quick hybrid anchoring pre-stressed anchor cable and construction method thereof |
| CN116181384B (en) * | 2023-03-28 | 2023-09-15 | 成都理工大学 | Quick hybrid anchoring pre-stressed anchor cable and construction method thereof |
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