CN110821540A - Sleeve type filament-implanted composite shear-resistant anchor rod and manufacturing method thereof - Google Patents
Sleeve type filament-implanted composite shear-resistant anchor rod and manufacturing method thereof Download PDFInfo
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- CN110821540A CN110821540A CN201911228961.7A CN201911228961A CN110821540A CN 110821540 A CN110821540 A CN 110821540A CN 201911228961 A CN201911228961 A CN 201911228961A CN 110821540 A CN110821540 A CN 110821540A
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- wire
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 96
- 239000010959 steel Substances 0.000 claims abstract description 96
- 239000002184 metal Substances 0.000 claims abstract description 87
- 238000003825 pressing Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 17
- 238000005498 polishing Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 238000010008 shearing Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a sleeve type wire-implanted composite shear anchor rod which comprises a deformed steel bar body, wherein a sleeve is sleeved on the deformed steel bar body, two ends of the sleeve are tightened and buckled on the deformed steel bar body, and a metal wire is filled in a cavity between the sleeve and the deformed steel bar body. The wire is the linear type wire, and the axis of linear type wire is parallel with the axis of the screw-thread steel body of rod, and the circumference evenly distributed of the screw-thread steel body of rod is followed to the linear type wire. Or the metal wire is a spiral metal wire which is wound on the screw-thread steel rod body. Also discloses a manufacturing method of the sleeve type wire-implanted composite shear-resistant anchor rod. The invention has simple structure and convenient manufacture; can effectively improve shear strength, shear strength improves for the twice of the single-thread steel body of rod.
Description
Technical Field
The invention belongs to the technical field of safety support of underground engineering, and particularly relates to a sleeve type wire-implanted composite shear-resistant anchor rod and a manufacturing method of the sleeve type wire-implanted composite shear-resistant anchor rod.
Background
With the increasing of coal mining depth and the continuous deterioration of mining conditions, the horizontal stress display and the problem brought to roadway support become more serious. In the current engineering application, the anchor net support accounts for more than 90% of the roadway support, and the most of the buried depth is less than 600 meters. Along with the increase of the embedding depth of the roadway, the ground stress is greatly increased, the supporting problem is more and more prominent, and even if a 500MPa high-strength anchor rod or even a 600MPa ultrahigh-strength anchor rod is adopted, the requirement for the stability of the roadway is not easily met. Through the actual stress analysis of the underground support anchor rod, most of the failure of the anchor rod is caused by low shear strength.
To present stock structure, in order to promote in the ability of shearing to some extent, reply the support requirement in deep tunnel, still need carry out structural improvement design to the service environment of multiple destruction type in the adaptation fracture rock mass.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a sleeve type wire-implanted composite shear-resistant anchor rod and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical measures:
the utility model provides a compound stock that shears of telescopic planting silk, includes the screw-thread steel body of rod, and the cover is equipped with the sleeve on the screw-thread steel body of rod, and the sleeve both ends are tightened up and are withheld on the screw-thread steel body of rod, and the cavity between the sleeve and the screw-thread steel body of rod is filled with the wire.
The metal wire is a linear metal wire, the axis of the linear metal wire is parallel to the axis of the deformed steel bar body, and the linear metal wire is uniformly distributed along the circumferential direction of the deformed steel bar body.
The diameter of the linear metal wire is 5-10% of the external diameter of the screw-thread steel rod body.
The metal wire is a spiral metal wire which is wound on the threaded steel rod body.
The wire diameter of the spiral metal wire is 5% -10% of the external diameter of the deformed steel bar body.
The material of the wire is steel.
A manufacturing method of a sleeve type filament-implanted composite shear anchor rod comprises the following steps:
and 5, polishing the threads on the tail end of the deformed steel bar body by using an anchor rod extruder, wherein the diameter of the polished part of the tail end of the deformed steel bar body is matched with the locking diameter of the tensioning lockset, and after the tail end part of the deformed steel bar body is polished, sequentially installing the tray, the spherical washer and the tensioning lockset at the tail end of the deformed steel bar body.
A manufacturing method of a sleeve type filament-implanted composite shear anchor rod comprises the following steps:
and 5, polishing the threads on the tail end of the deformed steel bar body by using an anchor rod extruder, wherein the diameter of the polished part of the tail end of the deformed steel bar body is matched with the locking diameter of the tensioning lockset, and after the tail end part of the deformed steel bar body is polished, sequentially installing the tray, the spherical washer and the tensioning lockset at the tail end of the deformed steel bar body.
Compared with the prior art, the invention has the following beneficial effects:
1. the structure is simple, and the manufacture is convenient;
2. can effectively improve shear strength, shear strength improves for the twice of the single-thread steel body of rod.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
FIG. 3 is a graph showing the relationship between the shearing force and the shearing deformation in the direct shear test of the single-thread steel rod body.
FIG. 4 is a graph showing the relationship between the shearing force and the shear deformation in the direct shear test of example 1.
FIG. 5 is a graph showing the relationship between the shearing force and the shear deformation in the direct shear test of example 2.
In the figure, 1-wire; 2-a deformed steel bar body; 3-a sleeve; 4-a tray; 5-a spherical washer; 6-stretching the lockset; 101-linear wire; 102-helical wire.
Detailed Description
The present invention will be described in further detail with reference to examples for the purpose of facilitating understanding and practice of the invention by those of ordinary skill in the art, and it is to be understood that the examples described herein are for the purpose of illustration and explanation only and are not intended to be limiting.
Example 1:
the utility model provides a compound stock that shears of telescopic planting silk, includes the screw-thread steel body of rod 2, and the cover is equipped with sleeve 3 on the screw-thread steel body of rod 2, and 3 both ends of sleeve tighten up to buckle and press on the screw-thread steel body of rod 2, and the cavity packing between sleeve 3 and the screw-thread steel body of rod 2 has wire 1.
The metal wire 1 is a linear metal wire 101, the axis of the linear metal wire 101 is parallel to the axis of the deformed steel bar body 2, and the linear metal wire 101 is uniformly distributed along the circumferential direction of the deformed steel bar body 2.
The diameter of the linear wire 101 is 5% to 10%, preferably 7%, of the outer diameter of the threaded steel shank 2.
The metal wire 1 is made of steel.
A manufacturing method of a sleeve type filament-implanted composite shear anchor rod comprises the following steps:
and 5, polishing the threads on the tail end of the deformed steel bar body 2 through an anchor rod extruder, wherein the diameter of the polished part of the tail end of the deformed steel bar body 2 is matched with the locking diameter of the tensioning lockset 6, and after the tail end part of the deformed steel bar body 2 is polished, the tray 4, the spherical washer 5 and the tensioning lockset 6 are sequentially installed at the tail end of the deformed steel bar body 2.
According to the invention, external force is transmitted and diffused to the linear metal wires 101 through the deformation of the sleeve 3, the partially stressed linear metal wires 101 diffuse and transmit the external force transmitted from the previous stage to the adjacent linear metal wires 101 through deformation and displacement, and the action area of the shearing force acting on the surface of the deformed steel bar body 2 is enlarged through the gradual decomposition, diffusion and transmission, so that the strength acting on the deformed steel bar body 2 in unit area is reduced, and the shearing resistance of the anchor rod is improved finally. In a word, the concentrated stress is resolved into the dispersed stress, the external force index that the anchor rod is sheared is improved, and the shearing strength of the anchor rod is improved.
The sleeve type wire-implanted composite shear anchor rod of the embodiment is subjected to a direct shear test, and the result shows that the shear effect is very obvious. As shown in fig. 3, the shear resistance of the single-thread steel rod body is about 110kN, and under the same loading condition, the telescopic wire-implanted composite shear anchor rod of the embodiment reaches 240kN, as shown in fig. 4, which is increased by more than two times, which illustrates that the telescopic wire-implanted composite shear anchor rod of the embodiment can effectively improve the transverse shear resistance of the single-thread steel rod body.
Example 2:
the utility model provides a compound stock that shears of telescopic planting silk, includes the screw-thread steel body of rod 2, and the cover is equipped with sleeve 3 on the screw-thread steel body of rod 2, and 3 both ends of sleeve tighten up to buckle and press on the screw-thread steel body of rod 2, and the cavity packing between sleeve 3 and the screw-thread steel body of rod 2 has wire 1.
The metal wire 1 is a spiral metal wire 102, the spiral metal wire 102 is wound on the screw-thread steel rod body 2, and the intervals of the spiral metal wires are closely arranged.
The wire diameter of the helical wire 102 is 5% to 10%, preferably 7%, of the outer diameter of the threaded steel shank body 2.
The metal wire 1 is made of steel.
A manufacturing method of a sleeve type filament-implanted composite shear anchor rod comprises the following steps:
and 5, polishing the threads on the tail end of the deformed steel bar body 2 through an anchor rod extruder, wherein the diameter of the polished part of the tail end of the deformed steel bar body 2 is matched with the locking diameter of the tensioning lockset 6, and after the tail end part of the deformed steel bar body 2 is polished, the tray 4, the spherical washer 5 and the tensioning lockset 6 are sequentially installed at the tail end of the deformed steel bar body 2.
According to the invention, external force is transmitted and diffused to the spiral metal wire 102 through the deformation of the sleeve 3, the partial stressed spiral metal wire 102 diffuses and transmits the external force transmitted from the previous stage to the adjacent part of the spiral metal wire 102 through deformation and displacement, and through the gradual decomposition and diffusion transmission, the action area of shearing force acting on the surface of the deformed steel rod body 2 is enlarged, so that the strength acting on the unit area of the deformed steel rod body 2 is reduced, and finally the shearing resistance of the anchor rod is improved. In a word, the concentrated stress is resolved into the dispersed stress, the external force index that the anchor rod is sheared is improved, and the shearing strength of the anchor rod is improved.
The sleeve type wire-implanted composite shear anchor rod of the embodiment is subjected to a direct shear test, and the result shows that the shear effect is very obvious. As shown in fig. 3, the shear resistance of the single-thread steel rod body is about 110kN, and under the same loading condition, the telescopic wire-implanted composite shear anchor rod of the embodiment reaches 220kN, which is increased by more than two times as shown in fig. 5, which illustrates that the telescopic wire-implanted composite shear anchor rod of the embodiment can effectively improve the transverse shear resistance of the single-thread steel rod body.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides a compound stock that shears of silk is planted to telescopic, includes the screw-thread steel body of rod (2), its characterized in that, the cover is equipped with sleeve (3) on the screw-thread steel body of rod (2), and the tightening buckle in sleeve (3) both ends is on the screw-thread steel body of rod (2), and the cavity packing between sleeve (3) and the screw-thread steel body of rod (2) has wire (1).
2. A telescopic, wire-implanted composite shear bolt according to claim 1, wherein the metal wires (1) are linear metal wires (101), the axis of the linear metal wires (101) is parallel to the axis of the threaded steel rod body (2), and the linear metal wires (101) are uniformly distributed along the circumference of the threaded steel rod body (2).
3. A telescopic, wire-implanted composite shear bolt according to claim 2, wherein the diameter of the linear wire (101) is 5-10% of the outer diameter of the deformed steel bar body (2).
4. A telescopic, wire-implanted composite shear bolt according to claim 1, wherein the metal wire (1) is a spiral metal wire (102), and the spiral metal wire (102) is wound on the threaded steel rod body (2).
5. The telescopic, wire-implanted composite shear bolt according to claim 4, wherein the wire diameter of the spiral metal wire (102) is 5-10% of the outer diameter of the deformed steel bar body (2).
6. A telescopic, wire-implanted composite shear bolt according to claim 1, 2, 3, 4 or 5, wherein the metal wire (1) is made of steel.
7. A method for manufacturing a telescopic wire-implanted composite shear anchor rod according to claim 2, which comprises the following steps:
step 1, manufacturing a deformed steel bar body (2), manufacturing a sleeve (3), manufacturing a linear metal wire (101), and manufacturing the linear metal wire (101) into a linear metal wire curtain;
step 2, binding the linear metal wire curtain on the deformed steel bar body (2), wherein the axial direction of each linear metal wire (101) of the linear metal wire curtain is parallel to the axial direction of the deformed steel bar body (2);
step 3, the deformed steel bar body (2) bound with the linear type metal wire curtain is arranged in the sleeve (3);
step 4, buckling and pressing two ends of the sleeve (3) by using a buckling and pressing machine;
and 5, polishing the threads on the tail end of the deformed steel bar body (2) through an anchor rod extruder, wherein the diameter of the polished part of the tail end of the deformed steel bar body (2) is matched with the locking diameter of the tensioning lock (6), and after the tail end part of the deformed steel bar body (2) is polished, sequentially installing the tray (4), the spherical washer (5) and the tensioning lock (6) at the tail end of the deformed steel bar body (2).
8. A method for manufacturing a telescopic wire-implanted composite shear anchor rod according to claim 4, which comprises the following steps:
step 1, manufacturing a deformed steel bar body (2) and a sleeve (3);
step 2, uniformly and tightly arranging and winding metal wires on a processing rod to enable the metal wires to be wound into spiral metal wires, pressing two ends of each spiral metal wire (102) on the processing rod, inserting the processing rod wound with the spiral metal wires (102) into a sleeve (3), loosening two ends of each spiral metal wire (102) pressed on the processing rod, amplifying the diameter of each spiral metal wire (102), tensioning the spiral metal wires on the inner surface of the sleeve (3), and drawing out the processing rod;
step 3, inserting the deformed steel bar body (2) into a round hole of the spiral metal wire (102);
step 4, buckling and pressing two ends of the sleeve (3) by using a buckling and pressing machine;
and 5, polishing the threads on the tail end of the deformed steel bar body (2) through an anchor rod extruder, wherein the diameter of the polished part of the tail end of the deformed steel bar body (2) is matched with the locking diameter of the tensioning lock (6), and after the tail end part of the deformed steel bar body (2) is polished, sequentially installing the tray (4), the spherical washer (5) and the tensioning lock (6) at the tail end of the deformed steel bar body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228961.7A CN110821540A (en) | 2019-12-04 | 2019-12-04 | Sleeve type filament-implanted composite shear-resistant anchor rod and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228961.7A CN110821540A (en) | 2019-12-04 | 2019-12-04 | Sleeve type filament-implanted composite shear-resistant anchor rod and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110821540A true CN110821540A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911228961.7A Pending CN110821540A (en) | 2019-12-04 | 2019-12-04 | Sleeve type filament-implanted composite shear-resistant anchor rod and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065481A (en) * | 2020-08-28 | 2020-12-11 | 山东李楼煤业有限公司 | Anti-shearing anchor rod and supporting method for preventing shearing and dislocation of top plate |
-
2019
- 2019-12-04 CN CN201911228961.7A patent/CN110821540A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065481A (en) * | 2020-08-28 | 2020-12-11 | 山东李楼煤业有限公司 | Anti-shearing anchor rod and supporting method for preventing shearing and dislocation of top plate |
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