CN215108972U - Rock burst resistant anchor rod - Google Patents
Rock burst resistant anchor rod Download PDFInfo
- Publication number
- CN215108972U CN215108972U CN202120926226.XU CN202120926226U CN215108972U CN 215108972 U CN215108972 U CN 215108972U CN 202120926226 U CN202120926226 U CN 202120926226U CN 215108972 U CN215108972 U CN 215108972U
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- Prior art keywords
- sleeve
- rock
- hole
- anchor rod
- center
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- Expired - Fee Related
Links
- 239000011435 rock Substances 0.000 title claims abstract description 45
- 238000013016 damping Methods 0.000 claims abstract description 23
- 230000035939 shock Effects 0.000 claims abstract description 13
- 230000003139 buffering effect Effects 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000008093 supporting effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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Abstract
The utility model provides a rock burst resistant anchor rod, which comprises a functional component for buffering and damping during rock burst and an anchor head component; the functional component is connected with the anchor head component; the functional assembly comprises a center anchor rod, a damping sleeve and a buffer sleeve which are coaxially arranged from inside to outside in sequence, the center anchor rod is a high-strength solid rod, the damping sleeve is a shockproof thermoplastic rubber sleeve with openings at two ends, the buffer sleeve is an aluminum sleeve with openings at two ends, and a plurality of rollers are uniformly arranged on the outer surface of the buffer sleeve. The utility model provides a pair of rock burst resistant stock has solved the relatively poor problem of energy-absorbing and shock attenuation effect in the structure of prior art.
Description
Technical Field
The application relates to the technical field of anchor rods, in particular to an anti-rock burst anchor rod.
Background
Rock burst is a phenomenon that elastic deformation potential energy accumulated in a rock body is suddenly and violently released under a certain condition, so that the rock bursts and is ejected. In mine and tunnel engineering construction, if the tunnel is tunneled to the vicinity of a high-pressure gas cluster, rock burst is possibly caused, and the quality and progress of the engineering and the personal safety of operators are seriously affected by the rock burst. When rock burst happens, a supporting anchor rod needing to be anchored in a rock body has strong shock absorption and energy absorption capacity and the capacity of adapting to large deformation of surrounding rock during rock burst, the prior published patent is named as an energy-absorbing pressure-relief type rock burst-resistant anchor rod, and the Chinese utility model with the publication number of CN212927906U carries out energy absorption and pressure relief through a rolling piece, but the rolling piece is only arranged at one position of the whole anchor rod, when rock burst happens, the pressure relief effect is not ideal, and although the inner hollow of the designed anchor rod can play the role of energy absorption, the strength and the bending resistance are weaker, when rock burst happens, the whole anchor rod is bent, folded and even broken due to the hollow, and the supporting effect is poorer.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an anti rock burst stock, its energy-absorbing and the relatively poor problem of shock attenuation effect in having solved prior art's structure.
The embodiment of the application is realized by the following technical scheme:
the utility model provides a rock burst resistant anchor rod, which comprises a functional component for buffering and damping during rock burst and an anchor head component; the functional assembly is connected with the anchor head assembly; the functional assembly comprises a center anchor rod, a damping sleeve and a buffer sleeve which are coaxially arranged from inside to outside in sequence, the center anchor rod is a high-strength solid rod, the damping sleeve is a shockproof thermoplastic rubber sleeve with openings at two ends, the buffer sleeve is an aluminum sleeve with openings at two ends, and a plurality of rollers are uniformly arranged on the outer surface of the buffer sleeve.
In some embodiments of the present invention, a hollow cavity layer is disposed between the central anchor rod and the damping sleeve.
In some embodiments of the present invention, the outer surface of the damping sleeve is attached to the inner surface of the cushion sleeve.
In some embodiments of the present invention, the surface of the damping sleeve has a honeycomb topology.
In some embodiments of the present invention, the anchor head assembly includes a conical end, the bottom surface of the end is coaxially provided with a blind mounting hole, and the blind mounting hole is connected to one end of the center anchor rod.
In some embodiments of the present invention, the end bottom surface is integrally provided with a connecting sleeve, and the inner wall of the connecting sleeve is connected with the outer wall of the buffer sleeve by a screw thread.
The utility model discloses an in some embodiments, the one end threaded connection that above-mentioned end was kept away from to above-mentioned cushion collar has the baffle, and above-mentioned baffle center is provided with the installation through-hole that is used for wearing to establish above-mentioned center stock, and above-mentioned baffle center is provided with fastening nut, and above-mentioned fastening nut extends above-mentioned baffle part threaded connection with above-mentioned center stock, and above-mentioned fastening nut third inlays to be located in above-mentioned baffle.
The utility model discloses an in some embodiments, first positioning hole has been seted up on the above-mentioned fastening nut lateral wall, sets up the second positioning hole relative with above-mentioned first positioning hole on the above-mentioned center stock, and above-mentioned first location passes through the locating pin with above-mentioned second positioning hole and connects.
The technical scheme of the embodiment of the application has at least the following advantages and beneficial effects:
the utility model provides an anti rock burst stock, the device include functional unit and anchor head subassembly, and above-mentioned functional unit includes central stock, shock attenuation cover and cushion collar. When the rock explodes, decompose or the release through the impact force that aluminium system cushion collar brought the time delay, the effect of the impact force that the rock brought is alleviated in the realization, the cushion collar is aluminium system and yielding, the cushion collar decomposes impact force and takes place deformation for the first time when the impact force is too big, make the impact force act on the shock attenuation cover of shockproof thermoplastic rubber material afterwards, the shock attenuation cover absorbs energy and reduces vibrations through self shockproof thermoplastic rubber material, and then carry out the secondary absorption to impact force, because the center stock is the solid pole of high strength again, when the impact force extends to center stock position, the high strength nature of center stock can block the impact and the scattered as far as possible of rock, and then the most possible degree of collapsing that reduces. In addition, when the rock burst happens, the rock of the surrounding rock exerts impact force on the device, the impact force acts on the rollers on the buffer sleeve, the rollers are stressed and decompose the impact force of the rock action through the smooth surfaces of the rollers, the impact force caused by the rock burst is relieved, the rollers are uniformly distributed on the whole buffer sleeve, the rollers all decompose the impact force, the supporting effect is realized to the greatest extent, the harm caused by the rock burst is reduced to the greatest extent, and the problem that the energy absorption effect and the shock absorption effect are poor in the structure in the prior art is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural view of a rockburst-resistant anchor rod provided by the present application;
fig. 2 is a schematic structural diagram of a damping sleeve in an anti-rock-burst anchor rod provided by the application.
Icon: 1-a central anchor rod; 101-a second positioning through hole; 2-damping sleeve; 3-a hollow cavity layer; 4-a buffer sleeve; 401-a roller; 5-end; 501, installing blind holes; 502-a connection sleeve; 6-a baffle plate; 601-mounting a through hole; 7-fastening a nut; 701-a first positioning through hole; 8-connecting the positioning pins.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "inner", "outer", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings or that the product of the application is usually placed in use, this is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present application.
In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 and 2, the utility model provides a rock burst resistant anchor rod, which comprises a functional component for buffering and damping during rock burst and an anchor head component; the functional component is connected with the anchor head component; the functional components comprise a central anchor rod 1, a damping sleeve 2 and a buffering sleeve 4 which are coaxially arranged from inside to outside in sequence, the central anchor rod 1 is a high-strength solid rod, the damping sleeve 2 is a shockproof thermoplastic rubber sleeve with openings at two ends, the buffering sleeve 4 is an aluminum sleeve with openings at two ends, when rock burst occurs, impact force caused by time delay is decomposed or relieved through the aluminum buffering sleeve 4, the effect of relieving the impact force caused by rock is achieved, the buffering sleeve 4 is made of aluminum and is easy to deform, when the impact force is too large, the buffering sleeve 4 decomposes and deforms the impact force for the first time, then the impact force acts on the damping sleeve 2 made of shockproof thermoplastic rubber, the damping sleeve 2 absorbs energy and reduces vibration through the shockproof thermoplastic rubber material, and then secondary absorption is carried out on the impact force, because the central anchor rod 1 is a high-strength solid rod, when the impact force extends to the position of the central anchor rod 1, the high strength of the core bolt 1 can resist the impact and the scattering of the rock as much as possible, thereby minimizing the degree of collapse as much as possible. The outer surface of the buffer sleeve 4 is uniformly provided with a plurality of rollers 401. When rock burst occurs, impact force is applied to the device by rocks of surrounding rocks, the impact force acts on the rollers 401 on the buffer sleeve 4, the rollers 401 are stressed and decompose the impact force of the rock action through the smooth surfaces of the rollers 401, the impact force caused by the rock burst is relieved, and the rollers 401 are uniformly distributed on the whole buffer sleeve 4, so that the impact force is decomposed by the rollers 401, the supporting effect is realized to the maximum extent, and the harm caused by the rock burst is reduced to the maximum extent. The utility model provides an anti rock burst stock has solved the relatively poor problem of energy-absorbing and shock attenuation effect in the structure of prior art.
In this embodiment, a hollow cavity layer 3 is arranged between the center anchor rod 1 and the damping sleeve 2, and by arranging the hollow cavity layer 3, when the damping sleeve 2 deforms, a part of impact force can be absorbed by the hollow cavity layer 3, so that the energy absorption and damping effects are achieved. The outer surface of the damping sleeve 2 is attached to the inner surface of the buffer sleeve 4. The surface of the shock absorption sleeve 2 is of a honeycomb topological structure, and impact force can be further absorbed through the special performance of the honeycomb topological structure, so that the effects of energy absorption and shock absorption are achieved.
In this embodiment the anchor head assembly comprises a conical head 5, by providing the head 5, it is possible to break up or push back collapsed rock when installing the device into the bolt hole. The bottom surface of the end 5 is coaxially provided with an installation blind hole 501, the installation blind hole 501 is connected with one end of the center anchor rod 1, the center anchor rod 1 is connected with the end 5, the position of a center rod can be limited, the anti-bending supporting effect is further realized, and in various mechanical connection structures, the connection mode between the center anchor rod 1 and the end 5 is preferably threaded. The bottom surface of the end head 5 is integrally provided with a connecting sleeve 502, and the inner wall of the connecting sleeve 502 is in threaded connection with the outer wall of the buffer sleeve 4.
In this embodiment, one end of the cushion collar 4 far from the end 5 is connected with a baffle 6 through a thread, the center of the baffle 6 is provided with an installation through hole 601 for penetrating through the center anchor rod 1, the center of the baffle 6 is provided with a fastening nut 7, the fastening nut 7 and the center anchor rod 1 extend out of the baffle 6 to be connected through the thread, and one third of the fastening nut 7 is embedded in the baffle 6. First positioning through hole 701 has been seted up on fastening nut 7 lateral wall, has seted up the second positioning through hole 101 relative with first positioning through hole 701 on the central stock 1, and first location and second positioning through hole 101 pass through the locating pin and connect 8, through setting up the locating pin, can prescribe a limit to the position of central stock 1, further realizes explosion-proof supporting's effect.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A rockburst resistant bolt comprising: the functional component and the anchor head component are used for buffering and damping during rock burst; the functional component is connected with the anchor head component;
the functional unit includes central stock, shock attenuation cover and the cushion collar of coaxial setting in proper order from inside to outside, the central stock is the solid pole of high strength, the shock attenuation cover is both ends open-ended thermoplastic rubber sleeve that takes precautions against earthquakes, the cushion collar is both ends open-ended aluminium system sleeve, the surface of cushion collar evenly is provided with a plurality of rollers.
2. A rock-burst resistant bolt according to claim 1,
and a hollow cavity layer is arranged between the central anchor rod and the damping sleeve.
3. A rock-burst resistant bolt according to claim 1,
the outer surface of the damping sleeve is attached to the inner surface of the buffer sleeve.
4. A rock-burst resistant bolt according to claim 1,
the surface of the shock absorption sleeve is of a honeycomb topological structure.
5. A rock-burst resistant bolt according to claim 1,
the anchor head assembly comprises a conical end head, a mounting blind hole is coaxially arranged on the bottom surface of the end head, and the mounting blind hole is connected with one end of the central anchor rod.
6. A rock-burst resistant bolt according to claim 5,
the bottom surface of the end is integrally provided with a connecting sleeve, and the inner wall of the connecting sleeve is in threaded connection with the outer wall of the buffer sleeve.
7. A rock-burst resistant bolt according to claim 6,
the buffer sleeve is far away from one end threaded connection of end has the baffle, the baffle center is provided with and is used for wearing to establish the mounting through hole of center stock, the baffle center is provided with fastening nut, fastening nut with the center stock extends baffle part threaded connection, fastening nut one-third inlays to be located in the baffle.
8. A rock-burst resistant bolt according to claim 7,
the fastening nut is characterized in that a first positioning through hole is formed in the side wall of the fastening nut, a second positioning through hole opposite to the first positioning through hole is formed in the center anchor rod, and the first positioning through hole is connected with the second positioning through hole through a positioning pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120926226.XU CN215108972U (en) | 2021-04-29 | 2021-04-29 | Rock burst resistant anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120926226.XU CN215108972U (en) | 2021-04-29 | 2021-04-29 | Rock burst resistant anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215108972U true CN215108972U (en) | 2021-12-10 |
Family
ID=79291343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120926226.XU Expired - Fee Related CN215108972U (en) | 2021-04-29 | 2021-04-29 | Rock burst resistant anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215108972U (en) |
-
2021
- 2021-04-29 CN CN202120926226.XU patent/CN215108972U/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 |
Granted publication date: 20211210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |