CN114657980A - Sleeve clamping type anchor rod rib body centering support - Google Patents
Sleeve clamping type anchor rod rib body centering support Download PDFInfo
- Publication number
- CN114657980A CN114657980A CN202210104035.4A CN202210104035A CN114657980A CN 114657980 A CN114657980 A CN 114657980A CN 202210104035 A CN202210104035 A CN 202210104035A CN 114657980 A CN114657980 A CN 114657980A
- Authority
- CN
- China
- Prior art keywords
- clamping
- anchor rod
- clamp
- sleeve
- rod rib
- 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.)
- Pending
Links
- 241001272720 Medialuna californiensis Species 0.000 claims abstract description 26
- 210000003205 muscle Anatomy 0.000 claims abstract description 23
- 238000005267 amalgamation Methods 0.000 claims abstract description 4
- 210000002435 tendon Anatomy 0.000 claims 6
- 238000009434 installation Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 9
- 239000004568 cement Substances 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000007101 Muscle Cramp Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a sleeve clamp type anchor rod rib centering support which comprises a support body and a sleeve, wherein the support body comprises at least two half-moon clamping blocks, each half-moon clamping block comprises a clamping part and a clamping connecting part, each clamping part comprises a clamping side wall and a clamping hoop groove, the clamping side walls are arranged on the outer sides of the clamping hoop grooves, the clamping hoop grooves are jointly spliced into a through hole of an anchor rod rib, and the anchor rod rib penetrates through the clamping hoop grooves and is clamped by the clamping side walls on the outer sides; the chucking connecting portion with chucking portion fixed connection, and the chucking connecting portion amalgamation forms the through-hole that the stock muscle body passed in the middle part reservation, the outer wall of chucking connecting portion is the taper, and the inboard passageway that forms supplies the stock muscle body to pass, and the sleeve is established to the outer wall of chucking connecting portion, and the chucking connecting portion is fixed to the sleeve clamp to this cramp half month clamp splice, form the clamp groove at the fixed stock muscle body of axial position clamp. The sleeve-clamping type anchor rod rib body centering support is quick and convenient to install the anchor rod rib body and high in efficiency.
Description
Technical Field
The invention relates to the technical field of foundation anchor rod pile construction, in particular to a sleeve clamp type anchor rod rib centering support.
Background
In modern engineering construction, anchor bolt support is adopted as a reinforcing support mode in landmark engineering such as side slopes, rock and soil, deep foundation pits and underground chamber construction such as tunnels. The steel strand and the steel bar are selected as the anchor rod rib body to be bonded with the peripheral wall, so that the aim of supporting is achieved. In the center of the prior art, when the support needs to be lengthened or reinforced, the anchor rod rib body needs to be longitudinally or transversely connected through the anchor rod rib body support to lengthen or reinforce the anchor rod rib body. Present stock muscle body is mostly threaded connection with the support, need slowly rotate to the position that needs from the one end of the muscle body during the installation, then through the iron wire with the slip casting pipe ligature in the periphery of its support, the injected cement thick liquid etc. is consolidated.
The anchor rod rib body that has now passes through threaded connection's mode with the support, need twist soon its support along rib body screw during installation, and the installation rate is slow, and the power consumption consuming time during the installation, work efficiency is low, in addition, can only be applicable to the anchor rod rib body installation of same specification, can not do the general assembly of a plurality of different specifications, and during the assembly, the installation accuracy requires highly, increases the degree of difficulty for the assembly.
Therefore, how to solve the problems of low installation speed and high installation requirement matching degree, the quick installation and multi-specification universal concentric installation anchor rod rib body is realized, and the anchor rod rib body bracket becomes a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a sleeve-clamping type anchor rod rib centering support aiming at the problems in the prior art.
Therefore, the above purpose of the invention is realized by the following technical scheme:
the utility model provides a support placed in middle of sleeve clamp formula stock muscle body which characterized in that: the anchor rod comprises a support body and a sleeve, wherein the support body comprises at least two half-moon clamping blocks, each half-moon clamping block comprises a clamping part and a clamping connecting part, each clamping part comprises a clamping edge wall and a clamping hoop groove, the clamping edge walls are arranged on the outer sides of the clamping hoop grooves, the clamping hoop grooves jointly form a through hole of an anchor rod rib body, and the anchor rod rib body penetrates through the clamping hoop grooves and is clamped by the clamping edge walls on the outer sides; the chucking connecting portion with chucking portion fixed connection, and the chucking connecting portion amalgamation forms the through-hole that the stock muscle body passed is reserved at the middle part, the outer wall of chucking connecting portion is the taper, and inboard formation passageway supplies the stock muscle body to pass, and the sleeve is established to the outer wall of chucking connecting portion, and the sleeve clamp is fixed chucking connecting portion to this cramps half a month clamp splice, forms the clamp groove and fixes the stock muscle body at axial position clamp.
While adopting the technical scheme, the invention can also adopt or combine the following technical scheme:
as a preferred technical scheme of the invention: the half-moon clamping block is provided with two clamping side walls which are fan-shaped, the clamp grooves are semicircular, and the clamp grooves are jointly spliced into a through hole of the round anchor rod rib body.
As a preferred technical scheme of the invention: the clamping side walls are spliced into a circular ring with the clamping hoop groove as a central hole and are concentric rings.
As a preferred technical scheme of the invention: the inner wall of the through hole, which is contacted with the clamp groove, of the clamping side wall is provided with threads, and the threads are matched with the anchor rod rib body to strengthen and clamp the anchor rod rib body.
As a preferred technical scheme of the invention: the clamping connecting part is arranged on the lower side of the clamping side wall and is fixedly connected to the side wall, close to the clamp groove, of the clamping side wall; the edge of the side wall of the clamping connecting part is provided with a plurality of pipeline bayonets; and/or, the clamping connection part is provided with a plurality of pressure release holes on the edge of the side wall.
As a preferred technical scheme of the invention: the sleeve is sleeved and hooped on the clamping connecting part, and the taper of the clamping connecting part is 0-60 degrees.
As a preferred technical scheme of the invention: the outer wall of the clamping connecting part is provided with threads, the taper of the clamping connecting part is 0-60 degrees, the inner wall of the sleeve is provided with connecting threads with inclined planes in cooperation with the taper of the clamping connecting part, and the clamping connecting part is clamped in different radial directions.
The invention provides a sleeve-clamping type anchor rod rib body centering support, which is characterized in that two or more semilunar clamping blocks are adopted for clamping, then a sleeve is sleeved on the outer side of the semilunar clamping blocks for hooping, the semilunar clamping blocks are clamped to an anchor rod rib body through the sleeve hooping, the mounting mode that the semilunar clamping blocks are screwed along the anchor rod rib body thread is changed when the anchor rod rib body is mounted centering support, the semilunar clamping blocks can be directly sleeved at appointed positions without being screwed along the anchor rod rib body when the semilunar clamping blocks are directly mounted, and the mounting time of the anchor rod rib body centering support is saved. In addition, utilize the fixed chucking connecting portion of sleeve clamp for the mounted position of the support placed in the middle of the stock muscle body does not receive interval length's influence, and stock muscle body length can freely be injectd as required, can laminate actual construction needs, and the adjustment length provides more facilities for the construction. The outer wall of the clamping connecting part is in a conical shape, and when the sleeve hoops different positions of the conical outer wall of the clamping connecting part, the size of the clamping groove can be adjusted, so that the clamping device can be applied to anchor rod ribs of different sizes. The sleeve-clamping type anchor rod rib centering support is simple in structure, convenient to operate and convenient to popularize and apply in the field of anchor rod rib supporting and mounting.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
in the drawings: a stent body 1; a chucking section 101; a chucking connection section 102; the clamping side wall 1011; a clip groove 1012; a sleeve 2; the anchor bar body 3.
Detailed Description
The invention is described in further detail with reference to the figures and specific embodiments.
As shown in fig. 1-3, the sleeve-clamping type anchor rod rib centering support comprises a support body 1 and a sleeve 2, wherein the support body 1 comprises at least two half-moon clamping blocks, each half-moon clamping block comprises a clamping part 101 and a clamping connecting part 102, each clamping part 101 comprises a clamping edge wall 1011 and a clamp groove 1012, the clamping edge walls 1011 are arranged on the outer sides of the clamp grooves 1012, the clamp grooves 1012 jointly form a through hole of an anchor rod rib 3, and the anchor rod rib 3 penetrates through the clamp grooves 1012 and is clamped by the clamping edge walls 1011 on the outer sides; chucking connecting portion 102 with chucking portion 101 fixed connection, and chucking connecting portion 102 amalgamation forms the through-hole that the anchor rod muscle body 3 passed is reserved at the middle part, the outer wall of chucking connecting portion 102 is the taper, and inboard formation passageway supplies the anchor rod muscle body 3 to pass, and sleeve 2 is established to the outer wall of chucking connecting portion 102, and 2 fixed chucking connecting portions 102 of sleeve clamp to this cramps half month clamp splice, forms clamp groove 1012 at the fixed anchor rod muscle body 3 of axial position clamp.
According to the sleeve clamping type anchor rod rib body centering support, two or more half-moon clamping blocks are adopted for clamping, then the sleeve 2 is sleeved into the outer side of the half-moon clamping blocks for clamping, the half-moon clamping blocks are clamped through the sleeve 2, clamping of the half-moon clamping blocks on the anchor rod rib body is achieved, the mounting mode that the half-moon clamping blocks need to be screwed along the anchor rod rib body threads when the anchor rod rib body 3 is mounted centering support is changed, after the half-moon clamping blocks are directly placed at the position needing to be mounted, the sleeve 2 is sleeved on the anchor rod rib body 3, the sleeve moves axially until the clamping connection portion 102 is clamped through the clamping, when the support is mounted, the support can be directly sleeved at the appointed position without being screwed along the anchor rod rib body, and mounting time of the anchor rod rib body centering support is saved. In addition, through the fixed chucking connecting portion 102 of sleeve 2 clamp for the mounted position of the support placed in the middle of the stock muscle body does not receive interval length's influence, and stock muscle body length can freely be injectd as required, can laminate actual construction needs, and adjustment length provides more facilities for the construction. The outer wall of the clamping connecting part 102 is conical, when the sleeve 2 clamps different positions of the conical outer wall of the clamping connecting part 102, the size of the clamp groove 1012 can be adjusted, the clamp groove can be suitable for anchor rod rib bodies with different sizes, and when anchor rod anchoring construction is carried out, the effect that the same centering support clamp fixes a plurality of anchor rod rib bodies with different sizes is achieved, more convenience is provided for construction, and the adaptability of the centering support is improved.
In the invention, the half-moon clamping blocks are provided with two blocks, the clamping side wall 1011 is in a fan shape, the clamp groove 1012 is in a semicircular shape, and the clamp grooves 102 are jointly spliced into a through hole of the round anchor rod rib body 3.
According to the invention, the half-moon clamping blocks are locked by the sleeve, so that the clamping force of the half-moon clamping blocks on the rib body is increased, and the support and the anchor rod rib body are in closer contact and firmer contact.
In the present invention, the clamping side walls 1011 are formed in a circular shape with the clamp groove 1012 as a center hole, and are concentric rings. The clamping side wall 1011 takes the clamping hoop groove 1012 as a central hole to form a concentric ring, and the concentric installation of the anchor rod rib body is rapidly realized by utilizing the design of the concentric ring. If many anchor rod muscle bodies are connected, utilize concentric ring and telescopic combination, realize many with the installation of anchor rod muscle body 3 concentricity, promoted the support rigid coupling anchor rod muscle body's between two parties stability, promoted the anchoring power.
In the invention, the clamp grooves 102 are jointly spliced to form the through hole of the anchor rod rib body 3, the inner wall of the through hole, namely the inner wall of the clamping side wall 1011, is provided with the screw thread, and the screw thread is matched with the anchor rod rib body 3 to strengthen and clamp the anchor rod rib body 3. In the invention, the threads arranged on the clamping side wall 1011 are matched with the spiral threads or threads arranged on the anchor rod rib body 3, so that the friction force between the anchor rod rib body 3 and the half-moon clamping blocks is enhanced, the anchoring clamping force of the half-moon clamping blocks on the anchor rod rib body 3 is improved, and the reinforcing force for axially fixing the anchor rod rib body 3 by a centered support is improved.
In the invention, the clamping connecting part 102 is arranged at the lower side of the clamping side wall 1011, the clamping connecting part 102 is fixedly connected to the side wall of the clamping side wall 1011 close to the clamping groove 1012, the width of a contact surface between the clamping connecting part 102 and the clamping side wall 1011 is increased in the axial direction and the anchor bar body 3 is increased, and the stable connection between the centering bracket and the anchor bar body 3 is realized by utilizing the expansion of the mutual contact surface. The edge of the side wall of the clamping connecting part 102 is provided with a plurality of pipeline bayonets 105; the chucking connection part 102 is provided with a plurality of through holes 106 therethrough.
The clamping side wall 1011 is provided with a plurality of pipeline bayonets 105 on the edge of the side wall. The pipeline bayonet 105 can be used for quickly clamping the grouting pipe 4 for introducing cement paste or directly introducing the cement paste, so that the installation of the grouting pipe is accelerated. And may also serve as a pressure relief vent. The anchor rod rib can also be used for clamping the anchor rod rib body, the anchor rod rib body is installed in a lengthening mode in the longitudinal direction, and the reinforcing depth or length is prolonged according to needs.
The clamping side wall 1011 is provided with a through hole 106, when the anchor rod body is inserted downwards, cement paste can overflow from the hole, so that pressure is released, anchoring resistance is reduced, and other ribs can pass through the cement paste.
The clamping side wall 1011 is in a semicircular ring shape, the lower end of the clamping side wall is provided with a clamping connecting part 102 along the depth direction of the middle through hole, and the clamping connecting part 102 is sleeved with the sleeve 2. In the invention, the clamping connecting part 102 is arranged at the lower end of the clamping side wall 1011 in the axial direction, so that the side wall space of the clamping side wall 1011 is liberated, and the pipe diameter of the grouting pipe 4 can be quickly clamped by using the pipeline bayonet 105.
In the invention, the sleeve 2 is sleeved and hooped on the clamping connecting part 102, and the taper of the clamping connecting part 102 is 0-60 degrees.
Alternatively, the outer wall of the clamping connection part 102 of the present invention is provided with a screw thread, the taper of the clamping connection part 102 is 0 to 60 degrees, and the inner wall of the sleeve 2 is provided with a connection screw thread with an inclined plane matching the taper of the clamping connection part 102 to clamp the clamping connection part in different radial directions.
According to the invention, after the half-moon clamping block is used for clamping the anchor rod rib body 3, the half-moon clamping block is hooped to realize the fixation of the anchor rod rib body 3 in the radial direction, and the conical clamping connecting piece 1012 on the half-moon clamping block can be utilized to be fixed with the matched hoop of the sleeve 2, so that the anchor rod rib bodies 3 with different diameters and the same half-moon clamping block can be clamped and quickly installed at preset positions; by utilizing the connection of the clamping side wall and the clamping connection part 102 in the axial direction, the clamping force of the half-moon clamping block on the anchor rod rib body 3 is increased, so that the contact between the centering bracket and the anchor rod rib body is tighter and firmer.
The above-described embodiments are intended to illustrate the present invention, but not to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit of the present invention and the scope of the claims fall within the scope of the present invention.
Claims (7)
1. The utility model provides a support placed in middle of sleeve clamp formula stock muscle body which characterized in that: the anchor rod comprises a support body and a sleeve, wherein the support body comprises at least two half-moon clamping blocks, each half-moon clamping block comprises a clamping part and a clamping connecting part, each clamping part comprises a clamping edge wall and a clamp groove, the clamping edge walls are arranged on the outer sides of the clamp grooves, the clamp grooves jointly form a through hole of an anchor rod rib body, and the anchor rod rib body penetrates through the clamp grooves and is clamped by the clamping edge walls on the outer sides; the chucking connecting portion with chucking portion fixed connection, and the chucking connecting portion amalgamation forms the through-hole that the stock muscle body passed in the middle part reservation, the outer wall of chucking connecting portion is the taper, and the inboard passageway that forms supplies the stock muscle body to pass, and the sleeve is established to the outer wall of chucking connecting portion, and the chucking connecting portion is fixed to the sleeve clamp to this cramp half month clamp splice, form the clamp groove at the fixed stock muscle body of axial position clamp.
2. The nesting type anchor tendon body centering bracket of claim 1, wherein: the half-moon clamping block is provided with two clamping side walls which are fan-shaped, the clamp grooves are semicircular, and the clamp grooves are jointly spliced into a through hole of the round anchor rod rib body.
3. The nesting type anchor tendon body centering bracket of claim 1, wherein: the clamping side walls are spliced into a circular ring with the clamping hoop groove as a central hole and are concentric rings.
4. The nesting type anchor tendon body centering bracket of claim 1, wherein: the inner wall of the through hole, which is contacted with the clamp groove, of the clamping side wall is provided with threads, and the threads are matched with the anchor rod rib body to strengthen the clamping of the anchor rod rib body.
5. The nesting type anchor tendon body centering bracket of claim 1, wherein: the clamping connecting part is arranged on the lower side of the clamping side wall and is fixedly connected to the side wall, close to the clamp groove, of the clamping side wall; the edge of the side wall of the clamping connecting part is provided with a plurality of pipeline bayonets; and/or, the clamping connection part is provided with a plurality of pressure release holes on the edge of the side wall.
6. The nesting type anchor tendon body centering bracket of claim 1, wherein: the sleeve is sleeved and hooped on the clamping connecting part, and the taper of the clamping connecting part is 0-60 degrees.
7. The nesting type anchor tendon body centering bracket of claim 1, wherein: the outer wall of the clamping connecting part is provided with threads, the taper of the clamping connecting part is 0-60 degrees, the inner wall of the sleeve is provided with connecting threads with inclined planes in cooperation with the taper of the clamping connecting part, and the clamping connecting part is clamped in different radial directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104035.4A CN114657980A (en) | 2022-01-28 | 2022-01-28 | Sleeve clamping type anchor rod rib body centering support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104035.4A CN114657980A (en) | 2022-01-28 | 2022-01-28 | Sleeve clamping type anchor rod rib body centering support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114657980A true CN114657980A (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210104035.4A Pending CN114657980A (en) | 2022-01-28 | 2022-01-28 | Sleeve clamping type anchor rod rib body centering support |
Country Status (1)
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|---|---|
| CN (1) | CN114657980A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101395867B1 (en) * | 2013-06-11 | 2014-05-15 | 서동산업(주) | Apparatus of fixing for rock bolt |
| US20150016894A1 (en) * | 2012-02-06 | 2015-01-15 | Hilti Aktiengesellschaft | Setting tool and method for installing an anchor rod |
| CN208701672U (en) * | 2018-08-30 | 2019-04-05 | 成都现代万通锚固技术有限公司 | A kind of built-in type prestressed anchor |
| CN109763849A (en) * | 2019-03-29 | 2019-05-17 | 华侨大学 | A kind of split type centering plug and anchor pole for anchor pole centering |
| CN208950616U (en) * | 2018-09-26 | 2019-06-07 | 浙江普泰克金属制品有限公司 | A kind of expansion shell type prestressing force hollow grouting anchor with plasma resistance plug |
| CN210239718U (en) * | 2019-07-31 | 2020-04-03 | 湖南科技大学 | Pressure-yielding fastening device for protecting anchor rod and anchor tail thread section |
-
2022
- 2022-01-28 CN CN202210104035.4A patent/CN114657980A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150016894A1 (en) * | 2012-02-06 | 2015-01-15 | Hilti Aktiengesellschaft | Setting tool and method for installing an anchor rod |
| KR101395867B1 (en) * | 2013-06-11 | 2014-05-15 | 서동산업(주) | Apparatus of fixing for rock bolt |
| CN208701672U (en) * | 2018-08-30 | 2019-04-05 | 成都现代万通锚固技术有限公司 | A kind of built-in type prestressed anchor |
| CN208950616U (en) * | 2018-09-26 | 2019-06-07 | 浙江普泰克金属制品有限公司 | A kind of expansion shell type prestressing force hollow grouting anchor with plasma resistance plug |
| CN109763849A (en) * | 2019-03-29 | 2019-05-17 | 华侨大学 | A kind of split type centering plug and anchor pole for anchor pole centering |
| CN210239718U (en) * | 2019-07-31 | 2020-04-03 | 湖南科技大学 | Pressure-yielding fastening device for protecting anchor rod and anchor tail thread section |
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