CN210919119U - Self-drilling self-locking combined hollow grouting anchor rod - Google Patents
Self-drilling self-locking combined hollow grouting anchor rod Download PDFInfo
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- CN210919119U CN210919119U CN201922030711.4U CN201922030711U CN210919119U CN 210919119 U CN210919119 U CN 210919119U CN 201922030711 U CN201922030711 U CN 201922030711U CN 210919119 U CN210919119 U CN 210919119U
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Abstract
The utility model discloses a self-drilling self-locking combined hollow grouting anchor rod, which comprises a hollow combined anchor rod, wherein the hollow combined anchor rod consists of a plurality of anchor rod monomers, convex rings or grooves are formed at the end parts of the two ends of each anchor rod monomer, the outer rings of the two ends of each anchor rod monomer are respectively provided with a threaded part, a connecting sleeve is sleeved on the threaded parts, the anchor rod monomers with the convex rings and the grooves are alternately arranged, the adjacent anchor rod monomers are connected through the connecting sleeve threads, and after the adjacent anchor rod monomers are connected, the convex rings are just and completely inserted into the corresponding grooves; the front end of the hollow combined anchor rod is connected with a self-drilling tapered end, the rear end of the hollow combined anchor rod is connected with a pre-stressed nut, and the self-drilling self-locking combined hollow grouting anchor rod is convenient and quick to support and install thick coal seams, three soft coal seams and soft rocks, can be long or short according to the thickness of the coal seams and the soft rocks, forms a full anchor after grouting, is good in supporting effect, improves the operation safety of workers, reduces labor risks, changes the traditional anchor rod support, and brings great social benefits.
Description
Technical Field
The utility model relates to a mine tunnel, side slope, tunnel anchor bolt support technical field, concretely relates to self-drilling auto-lock combination formula cavity slip casting stock.
Background
Coal is one of important energy sources in China, the coal mine production still lasts for a long time, the coal mine production must be safe and efficient, the underground ground stress is gradually increased along with the gradual deep mining of the coal mine, the support of underground roadways such as thick coal seams, three-soft coal seams, soft rocks and the like cannot meet the requirements, a quick, safe and efficient support must be found, and the safety and the high efficiency can be realized through self-drilling and self-locking one-time full-anchor support, which is one of the reasons of the invention. Along with the coal mining to the deep part, the ground pressure treatment always restricts the safe and efficient mining of the coal mine, and particularly, the thick coal seam is more serious in one-time mining full height, 'three soft coal seam' and soft rock roadway support and must be well treated.
The traditional underground roadway support adopts u-shaped steel, I-shaped steel, anchor rod end anchor support and the like, has high labor intensity and poor support effect, is not suitable for coal mine deep mining, and is gradually eliminated. The end-bolting of the anchor rods also gradually shows drawbacks, such as: (1) the construction steps are multiple, and the pre-tightening force is applied through four steps of drilling, placing resin and rotating the anchor rod, so that the operation of workers is inconvenient, and the labor intensity is high; and (2) the length of the anchor rod cannot be adjusted according to the thickness of the coal bed and the soft rock, so that the construction and supporting effects are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a from boring auto-lock combination formula cavity slip casting stock, it has solved that traditional stock construction step is many, construction intensity of labour is big and can't carry out the defect adjusted stock length according to coal seam and soft rock thickness.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the self-drilling self-locking combined type hollow grouting anchor rod comprises a hollow combined anchor rod, wherein the hollow combined anchor rod consists of a plurality of anchor rod monomers, convex rings or grooves are formed at the end parts of the two ends of each anchor rod monomer, the outer rings of the two ends of each anchor rod monomer are provided with screw thread parts, connecting sleeves are sleeved on the screw thread parts, the anchor rod monomers with the convex rings and the grooves are alternately arranged, adjacent anchor rod monomers are connected through the connecting sleeves in a threaded manner, and after the adjacent anchor rod monomers are connected, the convex rings are just and completely inserted into the corresponding grooves;
the front end of the hollow combined anchor rod is connected with a self-drilling lock head, and the rear end of the hollow combined anchor rod is connected with a prestressed nut.
The self-drilling lock head is further improved in that the self-drilling lock head comprises a shell, a drill bit clamp, a drill bit, a tension shell and a tension wedge, wherein the drill bit clamp is installed inside the front end of the shell, the drill bit is installed at the front end of the drill bit clamp, the tension shell is connected to the rear end of the shell through a first thread, the tension wedge penetrates through the inside of the tension shell, the front end of the tension wedge is matched with the shell through a second thread, when the tension wedge is screwed in towards the front end of the shell, the tension wedge drives the shell, the drill bit clamp and the drill bit to rotate, and when the tension wedge is screwed out towards the rear end of the shell, the tension wedge extrudes the tension shell to.
The further improvement lies in that the outer surface of the expansion shell is provided with a rough structure.
The further improvement is that the expansion shell is provided with a through hole which is communicated with the inside and the outside.
The further improvement is that the self-drilling lock head is in threaded connection with the front end of the hollow combined anchor rod through the rear end of the expanding wedge.
In a further improvement, a pin is radially inserted into the prestressed nut.
The further improvement is that the rear end of the prestressed screw cap is sleeved with a sealing sleeve.
The further improvement is that the front end of the prestress nut is in threaded connection with the rear end of the hollow combined anchor rod.
The beneficial effects of the utility model reside in that: the self-drilling and self-locking combined type hollow grouting anchor rod is convenient and quick to construct and install thick coal seams, three-soft coal seams and soft rock supports, can be long or short according to the thickness of the coal seams and the soft rock, forms a full anchor after grouting, is good in supporting effect, improves the operation safety of workers, reduces labor risks, changes the traditional anchor rod support, and brings great social benefits.
Drawings
FIG. 1 is an exploded rear view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
in the figure: 1. an anchor rod monomer; 2. a convex ring; 3. a groove; 4. a threaded portion; 5. connecting sleeves; 6. a pre-stressed nut; 7. a housing; 8. a bit holder; 9. a drill bit; 10. expanding the shell; 11. expanding the wedge; 12. a first thread; 13. a second thread; 14. a through hole; 15. a pin; 16. and (5) sealing the sleeve.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Combine shown in fig. 1 and fig. 2, from boring auto-lock combination formula cavity slip casting stock, including cavity combination stock, cavity combination stock comprises a plurality of sections stock monomers 1, the tip at stock monomer 1 both ends all is formed with bulge loop 2 or recess 3, the outer lane at stock monomer 1 both ends all is equipped with screw thread portion 4, the cover has adapter sleeve 5 on screw thread portion 4, take bulge loop 2 and take recess 3's stock monomer 1 alternate arrangement, through adapter sleeve 5 threaded connection between the adjacent stock monomer 1, and after adjacent stock monomer 1 connects, bulge loop 2 inserts completely just in corresponding recess 3, realize sealed butt joint.
The front end of cavity combination stock is connected with from the drilling tapered end, from the drilling tapered end including casing 7, drill bit clamp 8, drill bit 9, shell 10 and the wedge 11 that rises rise, drill bit clamp 8 is installed inside casing 7 front end, drill bit 9 is installed at drill bit clamp 8 front end, shell 10 that rises connects in casing 7 rear end through first screw thread 12, wedge 11 that rises passes inside the shell 10 that rises and rise the wedge 11 front end and pass through second screw thread 13 and casing 7 cooperation, when wedge 11 that rises precession toward casing 7 front end, wedge 11 that rises drives casing 7 and drill bit clamp 8, drill bit 9 rotates, when wedge 11 that rises unscrews toward casing 7 rear end, wedge 11 that rises extrudees shell 10 that rises and outwards rises, the surface of shell 10 that rises is equipped with coarse structure, be equipped with inside and outside through-hole 14 that communicates on the shell 10 that rises, from the drilling tapered end through wedge 11 rear end and the cavity combination stock front end threaded connection that rises.
The first threads 12 can be fine threads to ensure the connection firmness of the expansion shell 10 and the shell 7, the second threads 13 can be coarse threads, the meshing force is small, and the expansion wedge 11 can rotate forward and backward by applying small force, so that when the expansion wedge 11 rotates towards one direction, the expansion wedge 11 can be screwed in quickly until the expansion wedge cannot move forward continuously, and at the moment, the expansion wedge 11 rotates continuously to drive the whole shell 7, the drill bit clamp 8 and the drill bit 9 to rotate, so that drilling is realized; since the outer surface of the expansion wedge 11 is formed with a protrusion and the inner surface of the expansion shell 10 is also formed with a protrusion which is offset to the rear, when the expansion wedge 11 rotates in the opposite direction, the expansion wedge 11 moves backward by the action of the second screw 13, and the protrusion on the expansion wedge 11 can expand the expansion shell 10 to achieve the function of quick anchoring.
The rear end of the hollow combined anchor rod is connected with a prestressed nut 6, a pin 15 is radially inserted into the prestressed nut 6, a sealing sleeve 16 for sealing during grouting is arranged at the rear end of the prestressed nut 6, and the front end of the prestressed nut 6 is in threaded connection with the rear end of the hollow combined anchor rod.
The utility model discloses when using, install the self-drilling tapered end at cavity combination stock front end earlier, install first festival stock monomer 1 that has the self-drilling tapered end on the stock machine connector, open stock machine dextrorotation, the stock body of rod gets into the coal, in the rock, first festival stock monomer 1 is under construction the back, it is rotatory to stop the stock machine, take out first festival stock monomer 1 from the connector, the erection joint cover 5, peg graft second festival stock monomer 1 with first festival stock monomer 1, reuse adapter cover 5 connects second festival stock monomer 1, insert the connector to second festival stock monomer 1, continue dextrorotation stock machine, second festival stock monomer 1 gets into the coal, in the rock, dock in proper order, until getting into the coal seam roof, connect the combination stock afterbody at last. When an anchor rod supporting plate (not shown in the figure) on the front end face of the prestress nut 6 is tightly attached to the coal and rock face, the rotation of the anchor rod machine is stopped, the anchor rod machine props against an anchor rod, the anchor rod machine is rotated leftwards by means of a pin 15 on the prestress nut 6 of the anchor rod, the expansion wedge 11 moves backwards at the moment, the expansion shell 10 is opened, the lock head locks a rock hole, the torque of the anchor rod machine is continuously increased, the nut pin 15 is cut off, and prestress is applied to the anchor rod. After the self-drilling self-locking combined type hollow grouting anchor rod is installed, a roadway support is subjected to primary anchoring, the anchor rod is grouted by a lagging operation surface, full-length anchoring is formed, and the operation is simple and convenient.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (8)
1. Self-drilling self-locking combined hollow grouting anchor rod is characterized in that: the hollow combined anchor rod is composed of a plurality of anchor rod monomers (1), convex rings (2) or grooves (3) are formed at the end parts of the two ends of each anchor rod monomer (1), threaded parts (4) are arranged on the outer rings of the two ends of each anchor rod monomer (1), connecting sleeves (5) are sleeved on the threaded parts (4), the anchor rod monomers (1) with the convex rings (2) and the grooves (3) are alternately arranged, adjacent anchor rod monomers (1) are in threaded connection through the connecting sleeves (5), and after the adjacent anchor rod monomers (1) are connected, the convex rings (2) are just completely inserted into the corresponding grooves (3);
the front end of the hollow combined anchor rod is connected with a self-drilling lock head, and the rear end of the hollow combined anchor rod is connected with a prestressed nut (6).
2. The self-drilling self-locking combined hollow grouting anchor rod of claim 1, wherein: the self-drilling lock head comprises a shell (7), a drill clamp (8), a drill bit (9), a swelling shell (10) and a swelling wedge (11), wherein the drill clamp (8) is installed inside the front end of the shell (7), the drill bit (9) is installed at the front end of the drill clamp (8), the swelling shell (10) is connected to the rear end of the shell (7) through a first thread (12), the swelling wedge (11) penetrates through the inside of the swelling shell (10) and the front end of the swelling wedge (11) is matched with the shell (7) through a second thread (13), the swelling wedge (11) drives the shell (7) and the drill clamp (8) and the drill bit (9) to rotate when the swelling wedge (11) is screwed out from the rear end of the shell (7), and the swelling wedge (11) extrudes the swelling shell (10) to be swelled outwards.
3. The self-drilling self-locking combined hollow grouting anchor rod according to claim 2, characterized in that: the outer surface of the expansion shell (10) is provided with a rough structure.
4. The self-drilling self-locking combined hollow grouting anchor rod according to claim 2, characterized in that: the expansion shell (10) is provided with a through hole (14) which is communicated with the inside and the outside.
5. The self-drilling self-locking combined hollow grouting anchor rod according to claim 2, characterized in that: the self-drilling lock head is in threaded connection with the front end of the hollow combined anchor rod through the rear end of the expanding wedge (11).
6. The self-drilling self-locking combined hollow grouting anchor rod of claim 1, wherein: and a pin (15) is radially inserted into the prestressed screw cap (6).
7. The self-drilling self-locking combined hollow grouting anchor rod of claim 1, wherein: the rear end of the prestress screw cap (6) is sleeved with a sealing sleeve (16).
8. The self-drilling self-locking combined hollow grouting anchor rod of claim 1, wherein: the front end of the prestress nut (6) is in threaded connection with the rear end of the hollow combined anchor rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922030711.4U CN210919119U (en) | 2019-11-21 | 2019-11-21 | Self-drilling self-locking combined hollow grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922030711.4U CN210919119U (en) | 2019-11-21 | 2019-11-21 | Self-drilling self-locking combined hollow grouting anchor rod |
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| CN210919119U true CN210919119U (en) | 2020-07-03 |
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| CN201922030711.4U Active CN210919119U (en) | 2019-11-21 | 2019-11-21 | Self-drilling self-locking combined hollow grouting anchor rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2609017A (en) * | 2021-07-16 | 2023-01-25 | Hypertunnel Ip Ltd | Integrated drilling injection and extraction device and method |
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2019
- 2019-11-21 CN CN201922030711.4U patent/CN210919119U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2609017A (en) * | 2021-07-16 | 2023-01-25 | Hypertunnel Ip Ltd | Integrated drilling injection and extraction device and method |
| GB2609017B (en) * | 2021-07-16 | 2023-07-12 | Hypertunnel Ip Ltd | Integrated drilling injection and extraction device and method |
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