CN213928394U - Prestressed extra-high-strength anti-shearing anchor rod device - Google Patents
Prestressed extra-high-strength anti-shearing anchor rod device Download PDFInfo
- Publication number
- CN213928394U CN213928394U CN202022203862.8U CN202022203862U CN213928394U CN 213928394 U CN213928394 U CN 213928394U CN 202022203862 U CN202022203862 U CN 202022203862U CN 213928394 U CN213928394 U CN 213928394U
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- steel strand
- anchor rod
- steel
- prestressed
- rod device
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Abstract
The utility model provides a prestressing force excels in anti-shear anchor device relates to the coal mine tunnel and struts the field. The anchor rod device comprises a steel strand rod body, a threaded pipe, a tray and a nut, wherein the threaded pipe is stabilized on the steel strand rod body through a chemical connecting agent, and the tray and the nut are directly installed at the threaded pipe of the rod body during use, so that the operation is simple and convenient. The device has used the high strength prestressing steel strand wires body of rod, consequently has very strong anti-shear capacity, can effectively solve the current stock and frustrate disconnected problem that appears easily when using for a long time, can realize the purpose of permanent support. The use method can ensure that the anchor rod device is correctly used in actual supporting operation so as to achieve an ideal supporting effect.
Description
Technical Field
The utility model relates to a coal mine tunnel struts technical field, and specifically speaking relates to a prestressing force excels in anti-shear anchor device.
Background
Bolting is an important means in the mining process of mines, and is rapidly developed in recent years. The anchor bolt support provides anchoring force for mine rock mass, and can prevent tunnel surrounding rock from deforming and damaging so as to keep the stability of the mine tunnel surrounding rock. The anchor rod body that uses among the existing coal mine tunnel support technique is generally made by the twisted steel, in long-term use, has the problem that takes place to frustrate and break easily because of the shearing resistance is not enough, is difficult to satisfy the demand of permanent support. Therefore, the development of a novel high-strength shear-resistant anchor rod device becomes one of the problems to be solved urgently in the mine roadway support technology.
In order to solve the problem, the utility model provides a prestressing force excels in anti-shear anchor rod device, anchor rod device uses high strength prestressing force steel strand wires as the body of rod to being equipped with body of rod not damaged type tool to lock, can demonstrate powerful anti-shear capacity, can effectively solve current stock and easily be frustrated disconnected problem when long-term the use, have important meaning.
Disclosure of Invention
The utility model aims at providing a prestressing force special high-strength anti-shear anchor rod device to the problem that exists among the current support technique that is frustrated disconnected easily because of the stock anti-shear ability is not enough to reach the permanent support effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a prestressed ultra-high-strength anti-shearing anchor rod device comprises a steel strand rod body, a threaded pipe, a tray and a nut.
According to the invention, the threaded pipe is fixed on the steel strand rod body through a chemical connecting agent, the tray is positioned on the outer side of the threaded pipe and above the nut, and the nut is screwed on the external thread of the threaded pipe.
According to the invention, the steel strand rod body is made of high-strength prestressed steel strands and can resist very strong shearing force.
According to the present invention, the steel strand is a stranded steel cable composed of 2, 3, 7 or 19 high strength steel wires, and is stabilized to have an extremely high strength and an excellent relaxation property.
According to the present invention, in order to increase durability, the steel wires constituting the steel strand are provided with one of a metal plating layer and a non-metal coating layer; preferably, the metal coating can be metal zinc; as another preference, the non-metallic coating may be an epoxy.
According to the present invention, the steel wires constituting the steel strand are scored to increase the frictional force between the rod body and the surrounding rock.
According to the invention, the threaded pipe and the steel strand rod body are bonded through the chemical connecting agent, so that the rod body is not damaged, and the damage of the traditional rigid lock cylinder to the steel strand is avoided.
The use method of the prestressed ultrahigh-strength shear-resistant anchor rod device comprises the following steps:
(1) sleeving the threaded pipe into one end of the steel strand rod body which is cut in advance, and then injecting a chemical connecting agent into a gap between the threaded pipe and the steel strand rod body from an inner port of the threaded pipe by using a perfusion apparatus;
(2) after the chemical connecting agent is in a solid state from a liquid state, the chemical connecting agent leaves the factory for use;
(3) when the steel strand anchoring device is used, the steel strand rod body with the threaded pipe is conveyed into a drill hole containing an anchoring agent, the steel strand is rotated to stir the anchoring agent to be in a fully-solid state, and then the tray is installed;
(4) and screwing the nut on the threaded pipe, and screwing to apply pretightening force.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below.
Fig. 1 is the embodiment of the present invention provides a decomposition diagram of a prestressed extra-high-strength shear-resistant anchor rod device.
Fig. 2 is a cross-sectional view of a high-strength prestressed steel strand made of 7 high-strength steel wires according to an embodiment of the present invention.
Icon:
1-steel strand rod body; 2-a threaded pipe; 3, a tray; 4-nut.
Detailed Description
The technical solutions in the embodiments of the present patent will be clearly and completely described below with reference to the drawings in the embodiments of the present patent, and it is obvious that the described embodiments are only some embodiments of the present patent, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in this patent without any creative effort belong to the protection scope of the present invention.
The patent provides a prestressed extra-high strength shear-resistant anchor rod device as shown in fig. 1-2, comprising a 1-steel strand rod body; 2-a threaded pipe; 3, a tray; 4-nut.
The using method comprises the following steps:
(1) sleeving the threaded pipe 2 into one end of the steel strand rod body 1 which is cut in advance, and then injecting the chemical connecting agent into a gap between the threaded pipe 2 and the steel strand rod body 1 from an inner port of the threaded pipe 2 by using a perfusion apparatus;
(2) waiting for 30 min, and changing the chemical connecting agent from a liquid state to a solid state for delivery;
(3) when the steel strand anchoring device is used, the steel strand rod body 1 with the threaded pipe 2 is conveyed into a drilled hole containing an anchoring agent, the steel strand 1 is rotated to stir the anchoring agent to be in a fully solid state, and then the tray 3 is installed;
(4) the nut 4 is screwed onto the threaded pipe 2 and tightened to apply a pre-tightening force.
The prestressed extra-high-strength anti-shearing anchor rod device provided by the embodiment overcomes the problem that the existing anchor rod body is easy to break due to insufficient anti-shearing capability in the long-term use process, and can realize permanent support of a coal mine roadway.
Claims (6)
1. The utility model provides a prestressing force special high strength anti-shear anchor rod device, contains the steel strand wires body of rod, screwed pipe, tray and nut, its characterized in that, the screwed pipe passes through chemical connecting agent and stabilizes on the steel strand wires body of rod, the tray is located the screwed pipe outside with the nut top, the nut is screwed up on the screwed pipe external screw thread.
2. The prestressed ultrahigh-strength shear-resistant anchor rod device according to claim 1, wherein: the steel strand rod body is a rod body made of high-strength prestressed steel strands.
3. The prestressed ultrahigh-strength shear-resistant anchor rod device according to claim 1, wherein: the steel strands are stranded steel cables consisting of 2, 3, 7 or 19 high strength steel wires.
4. The prestressed ultrahigh-strength shear-resistant anchor rod device according to claim 1, wherein: the steel wires constituting the steel strand are provided with one of a metal coating or a non-metal coating.
5. The prestressed ultrahigh-strength shear-resistant anchor rod device according to claim 1, wherein: the steel wires forming the steel strand are provided with nicks.
6. The prestressed ultrahigh-strength shear-resistant anchor rod device according to claim 1, wherein: the threaded pipe and the steel strand rod body are bonded through a chemical connecting agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022203862.8U CN213928394U (en) | 2020-09-30 | 2020-09-30 | Prestressed extra-high-strength anti-shearing anchor rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022203862.8U CN213928394U (en) | 2020-09-30 | 2020-09-30 | Prestressed extra-high-strength anti-shearing anchor rod device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213928394U true CN213928394U (en) | 2021-08-10 |
Family
ID=77218710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022203862.8U Expired - Fee Related CN213928394U (en) | 2020-09-30 | 2020-09-30 | Prestressed extra-high-strength anti-shearing anchor rod device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213928394U (en) |
-
2020
- 2020-09-30 CN CN202022203862.8U patent/CN213928394U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210810 |