CN215595622U - Novel hollow grouting prestressed anchor rod - Google Patents
Novel hollow grouting prestressed anchor rod Download PDFInfo
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- CN215595622U CN215595622U CN202020945255.6U CN202020945255U CN215595622U CN 215595622 U CN215595622 U CN 215595622U CN 202020945255 U CN202020945255 U CN 202020945255U CN 215595622 U CN215595622 U CN 215595622U
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- anchor
- anchor rod
- head
- anchor head
- rod body
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Abstract
A novel hollow grouting prestressed anchor rod mainly comprises an anchor rod front section, an anchor rod connecting section and an anchor rod rear section; the front section of the anchor rod comprises but is not limited to a steel expansion anchor head, a special anchor head, an inter-rod connecting sleeve and an anchor rod body, and the anchor rod body and the special anchor head are provided with grout outlet holes; the anchor rod connecting section consists of a special anchor head, an anchor rod body and an inter-rod connecting sleeve; the rear section of the anchor rod comprises a specially-made anchor head, an anchor rod body, an inter-rod connecting sleeve, a grout stop plug, an anchor head base plate, a nut and a grout stop plug. The length of the anchor rod connecting section, the positions and the number of the specially-made anchor heads and the reserved grout outlet holes can be adjusted according to actual conditions, and different anchoring requirements can be met; the anchoring capability can be improved by using a barb structure formed by a special anchor head; the reserved grout outlet hole can improve the grout outlet effect of the anchor rod; the components contained in the anchor rod can be produced in a standardized way, the construction efficiency is high, and the manufacturing cost is lower.
Description
Technical Field
The utility model relates to the technical field of support anchor rods, in particular to a novel hollow grouting prestressed anchor rod.
Background
Anchor rods are used as common equipment in supporting engineering, and are now applied to various engineering fields, such as mines, tunnels, side slopes and the like. The anchor rods are utilized to connect broken surrounding rocks into a whole, or improve the cohesive force and the internal friction angle of a soil layer, and enhance the safety and the stability of the soil layer. The traditional grouting anchor rod has poor grout outlet effect and single anchoring mode, cannot adapt to anchoring requirements of different geological conditions, and the technical problem is urgently needed to be solved.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the problems, the utility model provides a novel hollow grouting prestressed anchor rod which can be applied to the technical field of supporting engineering.
(II) technical scheme
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel cavity slip casting prestressed anchorage pole, includes stock anterior segment, stock linkage segment and stock back end, its characterized in that: the anchor rod front section comprises a steel expansion anchor head, a special anchor head, an inter-rod connecting sleeve and an anchor rod body, the anchor rod connecting section consists of a special anchor head, an anchor rod body and an inter-rod connecting sleeve, the anchor rod rear section comprises a special anchor head, an anchor rod body, an inter-rod connecting sleeve, a grout stop plug, an anchor head base plate, a nut and a grout stop plug, the inter-rod connecting sleeve is used for connecting the anchor rod front section, the anchor rod connecting section and the anchor rod rear section to form a complete anchor rod device, the anchor rod body is provided with a rod body external grout outlet hole which is arranged at intervals, the anchor rod body external is provided with a thread which is matched with the special anchor head internal thread to increase the friction force with a grouting material, the anchor head comprises a special anchor head convex structure and a rotation center device, the internal thread can be matched with the anchor rod body external thread, the special anchor head convex structure is provided with a special anchor head internal grout outlet hole, the special anchor head can rotate towards the outer side of the anchor rod body around the rotation center device, and the special anchor head convex structure can form an included angle of 0-60 degrees with the outer side of the anchor rod body.
(III) advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
firstly, a multi-stage anchoring structure can be formed by adjusting the length of the connecting section of the anchor rod, the positions and the number of specially-made anchor heads and reserved slurry outlet holes, and the multi-stage anchoring structure is suitable for different geological conditions such as soil layers, weak rock layers and the like and different anchoring requirements;
the barb structure of the characteristic anchor head can increase the anchoring capability of the anchor rod, the reserved grout outlet holes can improve the grout outlet effect of the anchor rod, and the contact area between the anchor rod and a geological material is increased, so that the anchoring capability is improved;
the parts of the front section, the connecting section and the rear section of the anchor rod can be produced in a standardized mode, and the anchor rod can be assembled flexibly on site, so that the construction efficiency can be improved, and the material loss and the use cost can be reduced.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a front section of a rock bolt of the present invention;
FIG. 2 is a schematic view of a bolt connection section of the present invention;
FIG. 3 is a rear section schematic view of the anchor of the present invention;
FIG. 4 is a schematic cross-sectional view of a specially made anchor head according to the present invention;
FIG. 5 is a schematic longitudinal cross-sectional view of a specially made anchor head according to the present invention;
wherein: the anchor head comprises a steel expansion anchor head, 2 specially-made anchor heads, 3 inter-rod connecting sleeves, 4 anchor rod bodies, 50 outer rod body slurry outlet holes, 51 inner specially-made anchor head slurry outlet holes, 6 grout stop plugs, 7 anchor head backing plates, 8 nuts, 9 grout stop plugs, 10 grouting materials, 11 specially-made anchor head convex structures and 12 rotation center devices.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a novel hollow grouting prestressed anchor rod comprises an anchor rod front section, an anchor rod connecting section and an anchor rod rear section, and is characterized in that: the anchor rod front section comprises a steel expansion anchor head 1, a specially-made anchor head 2, an inter-rod connecting sleeve 3 and an anchor rod body 4, the anchor rod connecting section consists of the specially-made anchor head 2, the anchor rod body 4 and the inter-rod connecting sleeve 3, the anchor rod rear section comprises the specially-made anchor head 2, the anchor rod body 4, the inter-rod connecting sleeve 3, a grout stop plug 6, an anchor head backing plate 7, a nut 8 and a grout stop plug 9, the inter-rod connecting sleeve 3 is used for connecting the anchor rod front section, the anchor rod connecting section and the anchor rod rear section to form a complete anchor rod device, the anchor rod body 4 is provided with a rod body external grout outlet 50 which is arranged at intervals, the anchor rod body 4 is externally provided with threads which are matched with internal threads of the specially-made anchor head 2 to increase the friction force with the grouting material 10, the specially-made anchor head 2 comprises a specially-made anchor head outer convex structure 11 and a rotation center device 12, and the internal threads of the specially-made anchor head outer convex structure can be matched with the external threads of the anchor rod body 4, the specially-made anchor head convex structure 11 is provided with a specially-made anchor head inner grout outlet 51 which can rotate towards the outer side of the anchor rod body 4 around the rotation center device 12, and the specially-made anchor head convex structure 11 and the outer side of the anchor rod body 4 form an included angle of 0-60 degrees.
The working process of the utility model is as follows:
firstly, determining the length and the number of the anchor rod connecting sections according to the field geological conditions and the anchoring requirements.
Secondly, drilling on site, mounting the specially-made anchor head 2 to the anchor rod body grout outlet 50, and assembling the front anchor rod section, the anchor rod connecting section and the anchor rod rear section by using the inter-rod connecting sleeve 3 to form an integral anchor rod structure.
Thirdly, folding the specially-made anchor head convex structure 11 to enable the specially-made anchor head convex structure to be close to the anchor rod body 4; the whole anchor rod is inserted into the drill hole, and grouting is carried out to the inside of the anchor rod body 4, so that the grouting is carried out from the grout outlet hole 51 in the special anchor head. In order to make the specially-made anchor head convex structure 11 expand to the outside of the anchor rod body 4 around the rotating center device 12 to form an included angle, the rear section of the anchor rod can be properly tensioned to the outside; after the grouting and tensioning processes are completed, the grout stop plug 6 and the grout stop plug 9 are used for preventing the grouting material 10 from leaking.
Fourthly, after the maintenance of the anchor rod is finished, the anchor rod is stretched outwards according to requirements, prestress is applied, and the anchor rod construction is finally finished.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (1)
1. The utility model provides a novel cavity slip casting prestressed anchorage pole, includes stock anterior segment, stock linkage segment and stock back end, its characterized in that: the anchor rod front section comprises a steel expansion anchor head (1), a special anchor head (2), an inter-rod connecting sleeve (3) and an anchor rod body (4), the anchor rod connecting section consists of the special anchor head (2), the anchor rod body (4) and the inter-rod connecting sleeve (3), the anchor rod rear section comprises the special anchor head (2), the anchor rod body (4), the inter-rod connecting sleeve (3), a grout stop plug (6), an anchor head backing plate (7), a nut (8) and a grout stop plug (9), the inter-rod connecting sleeve (3) is used for connecting the anchor rod front section, the anchor rod connecting section and the anchor rod rear section to enable the anchor rod front section, the anchor rod body and the anchor rod rear section to form a complete anchor rod device, the anchor rod body (4) is provided with rod body external grout outlet holes (50) which are arranged at intervals, threads are arranged outside the anchor rod body (4) and matched with the internal threads of the special anchor head (2), the friction force of the grouting material (10) can be increased, and the special anchor head (2) comprises a special anchor head outer convex structure (11) and a rotating center device (12), the inner thread of the specially-made anchor head protruding structure (11) can be matched with the outer thread of the anchor rod body (4), the specially-made anchor head protruding structure (11) is provided with a specially-made anchor head inner grout outlet (51) which can rotate towards the outer side of the anchor rod body (4) around the rotation center device (12), and the specially-made anchor head protruding structure (11) and the outer side of the anchor rod body (4) can form an included angle of 0-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020945255.6U CN215595622U (en) | 2020-05-31 | 2020-05-31 | Novel hollow grouting prestressed anchor rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020945255.6U CN215595622U (en) | 2020-05-31 | 2020-05-31 | Novel hollow grouting prestressed anchor rod |
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| Publication Number | Publication Date |
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| CN215595622U true CN215595622U (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020945255.6U Active CN215595622U (en) | 2020-05-31 | 2020-05-31 | Novel hollow grouting prestressed anchor rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541384A (en) * | 2022-01-28 | 2022-05-27 | 江苏科技大学 | Self-expanding anchor rod adapting to water level change |
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2020
- 2020-05-31 CN CN202020945255.6U patent/CN215595622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541384A (en) * | 2022-01-28 | 2022-05-27 | 江苏科技大学 | Self-expanding anchor rod adapting to water level change |
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