CN116557024A - Hard rock rotary connecting rod - Google Patents
Hard rock rotary connecting rod Download PDFInfo
- Publication number
- CN116557024A CN116557024A CN202310764646.6A CN202310764646A CN116557024A CN 116557024 A CN116557024 A CN 116557024A CN 202310764646 A CN202310764646 A CN 202310764646A CN 116557024 A CN116557024 A CN 116557024A
- Authority
- CN
- China
- Prior art keywords
- rod
- sleeve body
- hard rock
- outer sleeve
- sliding block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000005553 drilling Methods 0.000 abstract description 19
- 238000004873 anchoring Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention discloses a hard rock rotary connecting rod, and belongs to the technical field of drilling, anchoring and grouting. The invention takes the outer sleeve body with a unidirectional opening as an external support, and forms an inserting structure with the inner lining rod; the sliding block is arranged at the front end of the lining rod and is in sliding fit with the outer sleeve body, and the sliding block is embedded in the outer sleeve body, so that the axial tensile strength is ensured, and the sliding block has 360-degree free rotation capability; the multistage sliding ring is arranged on the outer side of the sliding block, so that smoothness of movement of the sliding block in the outer sleeve body is guaranteed, and meanwhile, the structural strength of the lining rod is guaranteed based on the internal supporting function of the axial framework. In addition, the annular end cap with the insertion hole is arranged at the outer end of the outer sleeve body, so that the sealing performance of the end part is ensured, and the second slip ring and the inner liner are arranged at the inner side of the annular end cap, so that the smoothness and the structural strength of installation are ensured. Compared with the conventional rotary connecting rod, the invention has the advantages that the tensile strength and the rotation amplitude are obviously improved, and the technical advantage is obvious.
Description
Technical Field
The invention relates to the technical field of drilling, anchoring and grouting, in particular to a hard rock rotary connecting rod.
Background
The drilling and anchoring integrated grouting anchor rod mainly comprises a drill bit, a wedge body, a rising shell, a rod body, a tray, a nut and the like. The rod body is a hollow high-strength seamless steel tube, the outer surface of the steel tube is of a full-thread structure, the drill bit is arranged at the top end of the anchor rod and is connected with the wedge body, and the tail part of the drill bit is provided with a self-locking structure for controlling the relative movement between the wedge body and the rod body, so that the forward drilling and reverse pre-tightening anchoring processes are realized. The tail part of the rod body is a left-handed thread section, and a nut and a tray hole sealing rubber plug are sequentially arranged at the tail part of the anchor rod. And a shearing pin is arranged between the nut and the threaded section at the tail part of the anchor rod, so that synchronous movement of the anchor rod and the drilling machine is ensured, and the anchor rod is sheared by the nut in the reverse pre-tightening process, so that pre-tightening installation of the anchor rod is realized rapidly.
The drilling and anchoring integrated grouting anchor rod can realize the integrated operation of drilling, anchoring and grouting, especially in a surrounding rock crushing area, the drilling and the timely installation can be realized, the problem of hole collapse of the drilling is avoided, then the integrity of the surrounding rock is timely recovered through grouting, the full-length prestress anchoring of the anchor rod is realized, the bearing capacity of a supporting structure is improved, and the purpose of controlling the deformation of the surrounding rock of a roadway is achieved. The working principle of the drilling and anchoring integrated grouting anchor rod is as follows: 1. drilling. The anchor rod is used as a drill rod at first, and after the self-drilling anchor rod drills, the rod body is not pulled out, so that the problem of construction caused by collapse of drilling is solved. 2. And (5) anchoring. After the anchor rod drilling is completed, the drilling machine is reversed, the end part of the anchor rod is mechanically anchored by utilizing the shell expanding structure, and meanwhile, the nuts are screwed to complete mechanical anchoring and pre-tightening installation. 3. Grouting. And (3) connecting the tail part of the anchor rod with a grouting pump, grouting surrounding rock of a roadway, and mechanically anchoring the anchor rod at the end part to complete prestress full-length anchoring. In the construction of the drilling and anchoring integrated grouting anchor rod, a certain axial tensile strength is required to be provided between the grouting anchor rod body and the tray, and the grouting anchor rod body and the tray can relatively rotate within a certain range, so that the requirement is particularly obvious when dealing with hard rock. Therefore, in the prior art, the rotary connecting rods are generally adopted for connection, and the common rotary connecting rods are required to be improved in the aspects of rotation amplitude, tensile strength and the like, so that the drilling requirements of ultra-high hard rock bodies are difficult to meet.
Disclosure of Invention
Aiming at the technical defects of the prior art, the invention provides a hard rock rotary connecting rod so as to solve the technical problems of the conventional rotary connecting rod that the rotation amplitude, the tensile strength and the like are to be improved.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the hard rock rotating connecting rod comprises an outer sleeve body, a lining rod, an axial skeleton, a sliding block, a clamp, a first sliding ring, an inner screw thread, an annular end cap, a sealing ring, a second sliding ring, a lining ring, a ball head, an inner arc surface, a reinforcing plate and a lateral passage; the one end of the overcoat body is sealed, the other end is uncovered, and interior screw thread sets up in the uncovered inboard of the overcoat body, has outer screw thread in annular end cap outside, outer screw thread cooperatees with interior screw thread, and the sealing ring sets up in interior screw thread with between the outer screw thread, have the jack that link up on annular end cap, the inside lining pole is via the jack extends to in the overcoat body, be equipped with the cavity in the inside lining pole, the axial skeleton install in the cavity, the slider is fixed in on the inside lining pole, is provided with the clamp inboard the slider, the clamp is embraced outside the inside lining pole, is provided with a plurality of first sliding rings outside the slider, is provided with interior lining circle and second sliding ring between inside lining pole and the annular end cap, is equipped with the bulb outside the blind end of the overcoat body, is equipped with inboard cambered surface in the blind end inboard of the overcoat body, has a plurality of reinforcing plates on the bulb, is equipped with the side direction passageway in the side of the overcoat body.
Preferably, the outer jacket has a plurality of annular flanges on its inner wall, and the axes of the flanges overlap each other.
Preferably, the axial skeleton has a variable diameter portion, the outer section diameter of the axial skeleton is larger than the inner section diameter thereof, and the outer section and the inner section of the axial skeleton are connected by the variable diameter portion.
Preferably, the slider has a plurality of annular grooves at its lateral end, the first slider ring being disposed in said annular grooves.
Preferably, a cover is arranged at the front end of the lining rod in an extending way, and the front end of the axial skeleton extends to the outside of the cover.
Preferably, a plurality of connecting rods extending along the radial direction of the lining rod are connected to the outer side of the axial skeleton, and the connecting rods are fixedly connected with the inner wall of the cavity.
Preferably, the plurality of connecting rods are arranged in a spiral line direction outside the axial skeleton.
Preferably, a spacer ring is provided between the second slip ring and the inner liner ring, the spacer ring having a thickness of not less than 2cm.
Preferably, the reinforcing plates are circumferentially distributed on the ball head, and at least one reinforcing plate is supported at the bottom end of the lateral passage.
Preferably, the lateral passages are provided with a closing plate or joint at the ends.
In the invention, the outer sleeve body is used for accommodating and serving as an acting point of one side of the tray; the lining rod is matched with the outer sleeve body and is used as an acting point on one side of the grouting anchor rod body; the axial skeleton is used as a support body in the lining rod, so that the structural strength of the lining rod is ensured; the sliding block is matched with the outer sleeve body and used for accurately guiding external force to the axis direction of the system; the clamp is wrapped on the lining rod, so that the stability of the sliding block on the lining rod is ensured; the multistage first slip ring is used for ensuring smoothness of movement of the sliding block; the inner screw thread on the outer sleeve body is matched with the outer screw thread on the annular end cap, and is used for fixedly mounting the annular end cap; the annular end cap is used for sealing the outer side of the outer sleeve body and forming a jack for installing the lining rod; the sealing ring is used for avoiding the formation of an air gap between the annular end cap and the outer sleeve body; the second slip ring is used for ensuring smoothness between the lining rod and the annular end cap when the lining rod is installed;
the inner lining ring is used for performing a structural reinforcement function between the annular end cap and the inner lining rod; the ball head is positioned at the outer side of the outer sleeve body and is used for being matched with one side of the inner cambered surface of the tray of the drilling and anchoring integrated grouting anchor rod; the inner cambered surface can be matched with the sliding block configuration; the reinforcing plate is used for ensuring the structural strength of the end part of the outer sleeve body from the outer side; the lateral passages may be provided with bypass pipes to build up a boost environment under the necessary conditions; in addition, a boss can be additionally arranged at the port of the outer sleeve body to be used as an acting point in the installation stage.
The invention discloses a hard rock rotary connecting rod. According to the technical scheme, a double-rod coaxial rotation mode is not adopted any more, and a sliding type connecting structure is innovatively designed. Specifically, the invention takes the outer sleeve body with the unidirectional opening as an external support, and forms an inserting structure with the inner lining rod; the sliding block is arranged at the front end of the lining rod and is in sliding fit with the outer sleeve body, and the sliding block is embedded in the outer sleeve body, so that the axial tensile strength is ensured, and the sliding block has 360-degree free rotation capability; the multistage sliding ring is arranged on the outer side of the sliding block, so that smoothness of movement of the sliding block in the outer sleeve body is guaranteed, and meanwhile, the structural strength of the lining rod is guaranteed based on the internal supporting function of the axial framework. In addition, the annular end cap with the insertion hole is arranged at the outer end of the outer sleeve body, so that the sealing performance of the end part is ensured, and the second slip ring and the inner liner are arranged at the inner side of the annular end cap, so that the smoothness and the structural strength of installation are ensured. Compared with the conventional rotary connecting rod, the invention has the advantages that the tensile strength and the rotation amplitude are obviously improved, and the technical advantage is obvious.
Drawings
FIG. 1 is a cross-sectional view of the entirety of the present invention;
FIG. 2 is a cross-sectional view of a liner rod of the present invention;
FIG. 3 is an isometric view of an outer casing of the present invention;
FIG. 4 is a cross-sectional view of an outer casing of the present invention;
wherein:
1. outer sleeve 2, inner lining rod 3, axial skeleton 4 and sliding block
5. Clamp 6, first slip ring 7, inner screw thread 8, annular end cap
9. Sealing ring 10, second slip ring 11, inner liner 12 and ball head
13. The inner cambered surface 14, the reinforcing plate 15, the lateral passages 16 and the boss.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. In order to avoid unnecessary detail, well-known structures or functions will not be described in detail in the following embodiments. Approximating language, as used in the following examples, may be applied to create a quantitative representation that could permissibly vary without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
The hard rock rotary connecting rod comprises an outer sleeve body 1, an inner lining rod 2, an axial framework 3, a sliding block 4, a clamp 5, a first sliding ring 6, an inner screw thread 7, an annular end cap 8, a sealing ring 9, a second sliding ring 10, an inner lining ring 11, a ball head 12, an inner arc surface 13, a reinforcing plate 14 and a lateral passage 15, wherein the inner arc surface is formed by a circular arc surface; the one end of the outer sleeve body 1 is sealed, the other end is open, an inner screw thread 7 is arranged on the inner side of the opening of the outer sleeve body 1, an outer screw thread is arranged outside an annular end cap 8, the outer screw thread is matched with the inner screw thread 7, a sealing ring 9 is arranged between the inner screw thread 7 and the outer screw thread, a through jack is arranged on the annular end cap 8, an inner lining rod 2 extends into the outer sleeve body 1 through the jack, a cavity is arranged in the inner lining rod 2, an axial framework 3 is arranged in the cavity, a sliding block 4 is fixed on the inner lining rod 2, a clamping hoop 5 is arranged on the inner side of the sliding block 4, the clamping hoop 5 is clamped outside the inner lining rod 2, a plurality of first sliding rings 6 are arranged on the outer side of the sliding block 4, an inner lining ring 11 and a second sliding ring 10 are arranged between the inner lining rod 2 and the annular end cap 8, a ball head 12 is arranged on the outer side of the closed end of the outer sleeve body 1, an inner arc surface 13 is arranged on the inner side of the closed end of the outer sleeve body 1, a plurality of reinforcing plates 14 are arranged on the ball head 12, and a lateral passage 15 is arranged on the side end of the outer sleeve body 1.
The structural features of this embodiment are as follows: the outer sleeve body 1 is used for accommodating and serving as an acting point on one side of the tray; the lining rod 2 is matched with the outer sleeve body 1 and is used as an acting point on one side of the grouting anchor rod body; the axial skeleton 3 is used as a support body in the lining rod 2, so that the structural strength of the lining rod 2 is ensured; the sliding block 4 is matched with the outer sleeve body 1 and used for accurately guiding external force to the axis direction of the system; the clamp 5 is wrapped on the lining rod 2, so that the stability of the sliding block 4 on the lining rod 2 is ensured; the first sliding ring 6 with multiple stages is used for ensuring smoothness of movement of the sliding block 4; the inner screw thread 7 on the outer sleeve body 1 is matched with the outer screw thread on the annular end cap 8, and is used for fixedly mounting the annular end cap 8; the annular end cap 8 is used for sealing the outer side of the outer sleeve body 1 and forming a jack for installing the lining rod 2; the sealing ring 9 is used for avoiding the formation of an air gap between the annular end cap 8 and the outer sleeve body 1; the second slip ring 10 is used to ensure smoothness between the lining rod 2 and the annular end cap 8 when the lining rod 2 is installed; the inner lining ring 11 is used for strengthening the structure between the annular end cap 8 and the inner lining rod 2; the ball head 12 is positioned at the outer side of the outer sleeve body 1 and is used for being matched with one side of the inner cambered surface of the tray of the drilling and anchoring integrated grouting anchor rod; the inner cambered surface 13 can be matched with the configuration of the sliding block 4; the reinforcing plate 14 is used for ensuring the structural strength of the end part of the outer sleeve 1 from the outside; the lateral passages 15 may be provided with bypass pipes to build up a pressurized environment under the necessary conditions; in addition, a boss 16 can be additionally arranged at the port of the outer sleeve body 1 to serve as an acting point in the installation stage.
Example 2
The hard rock rotary connecting rod comprises an outer sleeve body 1, an inner lining rod 2, an axial framework 3, a sliding block 4, a clamp 5, a first sliding ring 6, an inner screw thread 7, an annular end cap 8, a sealing ring 9, a second sliding ring 10, an inner lining ring 11, a ball head 12, an inner arc surface 13, a reinforcing plate 14 and a lateral passage 15, wherein the inner arc surface is formed by a circular arc surface; the one end of the outer sleeve body 1 is sealed, the other end is open, an inner screw thread 7 is arranged on the inner side of the opening of the outer sleeve body 1, an outer screw thread is arranged outside an annular end cap 8, the outer screw thread is matched with the inner screw thread 7, a sealing ring 9 is arranged between the inner screw thread 7 and the outer screw thread, a through jack is arranged on the annular end cap 8, an inner lining rod 2 extends into the outer sleeve body 1 through the jack, a cavity is arranged in the inner lining rod 2, an axial framework 3 is arranged in the cavity, a sliding block 4 is fixed on the inner lining rod 2, a clamping hoop 5 is arranged on the inner side of the sliding block 4, the clamping hoop 5 is clamped outside the inner lining rod 2, a plurality of first sliding rings 6 are arranged on the outer side of the sliding block 4, an inner lining ring 11 and a second sliding ring 10 are arranged between the inner lining rod 2 and the annular end cap 8, a ball head 12 is arranged on the outer side of the closed end of the outer sleeve body 1, an inner arc surface 13 is arranged on the inner side of the closed end of the outer sleeve body 1, a plurality of reinforcing plates 14 are arranged on the ball head 12, and a lateral passage 15 is arranged on the side end of the outer sleeve body 1. The inner wall of the outer jacket 1 has a plurality of annular flanges, and the axes of the flanges overlap each other. The axial skeleton 3 has a reducing portion, and the outer section diameter of the axial skeleton 3 is greater than the inner section diameter thereof, and the outer section and the inner section of the axial skeleton 3 are connected through the reducing portion. At the side end of the slide 4, a plurality of annular grooves are provided, in which the first slide ring 6 is accommodated. A cover is arranged at the front end of the lining rod 2 in an extending way, and the front end of the axial skeleton 3 extends to the outside of the cover. The outside at axial skeleton 3 is connected with a plurality of connecting rods that extend along lining rod 2 radial, the connecting rod with the inner wall fixed connection of cavity. The plurality of connecting rods are arranged in the spiral line direction outside the axial skeleton 3. Between the second slip ring 10 and the inner ring 11 there is a spacer ring, the thickness of which is not less than 2cm. Each reinforcing plate 14 is circumferentially uniformly distributed on the ball head 12, and at least one reinforcing plate 14 is supported at the bottom end of the lateral passage 15. The lateral passages 15 are provided with sealing plates or joints at the ends.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the scope of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The hard rock rotary connecting rod is characterized by comprising an outer sleeve body (1), an inner lining rod (2), an axial framework (3), a sliding block (4), a clamp (5), a first sliding ring (6), an inner screw thread (7), an annular end cap (8), a sealing ring (9), a second sliding ring (10), an inner lining ring (11), a ball head (12), an inner side cambered surface (13), a reinforcing plate (14) and a lateral passage (15); one end of the outer sleeve body (1) is sealed, the other end is open, the inner screw thread (7) is arranged on the inner side of the opening of the outer sleeve body (1), the outer screw thread is arranged outside the annular end cap (8), the outer screw thread is matched with the inner screw thread (7), the sealing ring (9) is arranged between the inner screw thread (7) and the outer screw thread, a through jack is formed in the annular end cap (8), the inner sleeve rod (2) extends to the outer sleeve body (1) through the jack, a cavity is formed in the inner sleeve rod (2), the axial skeleton (3) is arranged in the cavity, the sliding block (4) is fixed on the inner sleeve rod (2), the clamp (5) is arranged on the inner side of the sliding block (4), the clamp (5) is wrapped outside the inner sleeve rod (2), a plurality of first sliding rings (6) are arranged on the outer side of the sliding block (4), inner rings (11) and second sliding rings (10) are arranged between the inner sleeve rod (2) and the annular end cap (8), a ball head (12) is arranged on the outer side of the outer sleeve body (1), the inner sleeve body (1) is provided with a closed end body (13), and the inner sleeve body (1) is provided with a plurality of lateral passages (14) on the inner sleeve body (14).
2. A hard rock swivel joint according to claim 1, characterized in that there are a number of annular flanges on the inner wall of the outer casing (1), the axes of the flanges being coincident with each other.
3. The hard rock rotary connecting rod according to claim 1, characterized in that the axial skeleton (3) has a reducing portion, the outer section diameter of the axial skeleton (3) is larger than the inner section diameter thereof, and the outer section and the inner section of the axial skeleton (3) are connected by the reducing portion.
4. The hard rock swivel joint according to claim 1, characterized in that the slide block (4) has a plurality of annular grooves at its lateral end, in which the first slip ring (6) is built.
5. A hard rock swivel joint according to claim 1, characterized in that the front end of the lining rod (2) is provided with a cover extending, the front end of the axial skeleton (3) extending outside said cover.
6. The hard rock rotary connecting rod according to claim 1, characterized in that a plurality of connecting rods extending along the radial direction of the lining rod (2) are connected to the outer side of the axial skeleton (3), and the connecting rods are fixedly connected with the inner wall of the cavity.
7. The hard rock swivel joint rod according to claim 6, characterized in that a plurality of joint rods are arranged in the direction of a spiral line on the outside of the axial skeleton (3).
8. The hard rock swivel joint rod according to claim 1, characterized in that there is a spacer ring between the second slip ring (10) and the inner ring (11), the spacer ring having a thickness of not less than 2cm.
9. The hard rock swivel joint according to claim 1, characterized in that each stiffening plate (14) is circumferentially distributed on the ball head (12), at least one stiffening plate (14) being held at the bottom end of the lateral passage (15).
10. A hard rock swivel joint rod according to claim 1, characterized in that the lateral passages (15) are provided with closing plates or joints at the ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310764646.6A CN116557024B (en) | 2023-06-27 | 2023-06-27 | Hard rock rotary connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310764646.6A CN116557024B (en) | 2023-06-27 | 2023-06-27 | Hard rock rotary connecting rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116557024A true CN116557024A (en) | 2023-08-08 |
| CN116557024B CN116557024B (en) | 2024-03-26 |
Family
ID=87494976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310764646.6A Active CN116557024B (en) | 2023-06-27 | 2023-06-27 | Hard rock rotary connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116557024B (en) |
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|---|---|---|---|---|
| US20030190834A1 (en) * | 2001-04-09 | 2003-10-09 | Reinhold Barlian | Plug connection |
| CN2608687Y (en) * | 2003-03-20 | 2004-03-31 | 付庆福 | Self drilling type rock prestressed grouting anchor |
| CN201605998U (en) * | 2010-02-08 | 2010-10-13 | 河南理工大学 | Small-aperture roadway bottom plate quick borehole drilling device |
| CN105114109A (en) * | 2015-09-18 | 2015-12-02 | 洛阳中岩工程材料有限公司 | Self-drilling type hollow anchor rod grouting connector |
| CN107120062A (en) * | 2017-07-13 | 2017-09-01 | 西南石油大学 | A kind of high speed impact drilling tool |
| CN207427826U (en) * | 2017-09-21 | 2018-06-01 | 临沂绿动机械有限公司 | A kind of gardens of adjustable cutting-height weeding raw meat grass trimmer |
| CN208280974U (en) * | 2018-05-31 | 2018-12-25 | 浙江佳途勘测设计有限公司 | A kind of compatibility of deformation recoverable anchor rod |
| CN109826656A (en) * | 2019-03-29 | 2019-05-31 | 攀枝花学院 | The anchor of drilling anchor one |
| CN110524025A (en) * | 2019-09-24 | 2019-12-03 | 北华大学 | A kind of deep hole drill jig for small-sized orthopaedics hollow screw |
| US20200056479A1 (en) * | 2017-09-12 | 2020-02-20 | China University Of Mining And Technology | Self-drilling differential grouting combined bolt and anchoring method therefor |
| CN112012685A (en) * | 2020-10-11 | 2020-12-01 | 东北石油大学 | Horizontal well in-situ monitoring fidelity continuous coring tool |
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2023
- 2023-06-27 CN CN202310764646.6A patent/CN116557024B/en active Active
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|---|---|---|---|---|
| US20030190834A1 (en) * | 2001-04-09 | 2003-10-09 | Reinhold Barlian | Plug connection |
| CN2608687Y (en) * | 2003-03-20 | 2004-03-31 | 付庆福 | Self drilling type rock prestressed grouting anchor |
| CN201605998U (en) * | 2010-02-08 | 2010-10-13 | 河南理工大学 | Small-aperture roadway bottom plate quick borehole drilling device |
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|---|
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Also Published As
| Publication number | Publication date |
|---|---|
| CN116557024B (en) | 2024-03-26 |
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