CN110195434B - Universal rubber plug for isolating and centering anchor rod body and anchor rod - Google Patents

Universal rubber plug for isolating and centering anchor rod body and anchor rod Download PDF

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Publication number
CN110195434B
CN110195434B CN201910249070.3A CN201910249070A CN110195434B CN 110195434 B CN110195434 B CN 110195434B CN 201910249070 A CN201910249070 A CN 201910249070A CN 110195434 B CN110195434 B CN 110195434B
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China
Prior art keywords
seam
plug
hole
anchor rod
rib
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CN110195434A (en
Inventor
涂兵雄
傅玲玲
欧金坤
程强
侯也婷
许国平
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Huaqiao University
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Xiamen Ycucg Co ltd
Huaqiao University
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention relates to a universal rubber plug for isolating and centering an anchor rod body, which comprises a plug body, wherein the plug body is provided with a central hole, the plug body comprises a cylindrical section and a conical section, the outer wall of the cylindrical section forms a first screw tooth part, the outer wall of the conical section forms a second screw tooth part, the cylindrical section is provided with a first stopper rib hole and a first stopper rib seam, the conical section is provided with a second stopper rib hole and a second stopper rib seam, the second stopper rib hole of the conical section is communicated with the first stopper rib hole of the cylindrical section, the conical section is also provided with an annular elastic seam, the universal rubber plug further comprises a radial elastic seam which is arranged on the conical section, the radial elastic seam penetrates from the outer wall of the conical section to the annular elastic seam, and further comprises a lock sleeve which is screwed on the second screw tooth part, the inner wall of the lock sleeve is provided with inner screw tooth parts matched with the second screw tooth parts, and the first stopper rib holes and the second stopper rib holes are equal in number and are mutually communicated. The invention also provides an anchor rod adopting the universal rubber plug. The invention can effectively solve the problems of isolation and centering of the anchor rod body and is convenient and quick to construct.

Description

Universal rubber plug for isolating and centering anchor rod body and anchor rod
Technical Field
The invention relates to an anchor rod system for supporting mine roadways, traffic tunnels, water conservancy culverts and foundation foundations, in particular to a universal rubber plug and an anchor rod for isolating and centering anchor rod bodies.
Background
With the rapid development of national foundation engineering construction and the development and utilization of underground space engineering, the anchor bolt support technology is used as an efficient and economical support technology and is widely applied to engineering construction of side slopes, foundation pits, water conservancy, dams, mines, underground engineering and the like. After the anchor rod receives the load, the load is transferred to the anchoring section through the bonding effect of the anchor rod body and the grouting body, and then the load is transferred to the stable rock-soil body through the bonding of the anchoring section and the rock-soil body, so that the aim of anchoring is achieved. The centering of the anchor rod body in the drilling is important to the bonding force between the anchor rod body and the grouting body, so that the isolation and centering of the anchor rod body are key links for guaranteeing the load transmission of the anchor rod, and the isolation and centering effect directly influences the pulling-resistant bearing capacity of the anchor rod. In actual engineering, the anchor rod body is influenced by various factors, so that the anchor rod body is gathered, the anchor rod body is eccentric and even stuck on the wall of a drilled hole, the adhesive force between the anchor rod body and a grouting body can be greatly weakened, and serious engineering potential safety hazards are caused. Therefore, the isolation and centering of the anchor rod body has a significant effect on the bearing capacity of the anchor rod.
At present, plastic clamping sheets or welding supports are adopted for centering the anchor rod body in the engineering. The plastic clamping piece can play an isolating role on the anchor rod body, but is softer due to insufficient rigidity, bending deformation is very easy to occur, so that the anchor rod body is difficult to center, even the anchor rod body is prone to hole phenomenon, namely, the anchor rod body is sunk by self weight and is attached to the hole wall, and the adhesive force between the anchor rod body and a grouting body is greatly reduced. The steel bars of the welding support are bent ribs with the diameter of 6-10mm, so that the welding workload is large, and hole wall soil bodies are easy to penetrate in the process of lowering and drilling, and the anchor rod body is difficult to center. In addition, if the anchor rod body does not adopt effective isolation measures, the total contact area of the anchor rod body and the grouting body is smaller than the sum of the contact areas of all the single anchor rod bodies and the grouting body due to parallel contact of a plurality of anchor rod bodies, so that the anti-pulling bearing capacity of the anchor rod is weakened. Therefore, the quality of the isolation and centering of the anchor rod body in actual engineering needs to be improved so as to ensure the bonding force between the anchor rod body and the grouting body.
In view of this, the present inventors have conducted intensive studies on the above problems, and have made the present invention.
Disclosure of Invention
The invention aims at solving the problem that the existing anchor rod body is difficult to isolate and center, and mainly aims to provide a universal rubber plug which can effectively solve the isolating and centering problem of the anchor rod body, is convenient and quick to construct and has high efficiency, universality and practicability.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a general purpose rubber stopper for stock body of rod keeps apart and centering, includes the cock body, is equipped with the centre bore on the cock body, and the centre bore runs through to the other end from cock body axial one end, the cock body includes cylindricality section and toper section, and the outer wall of cylindricality section forms first screw thread portion, and the outer wall of toper section forms second screw thread portion, is equipped with first stopper muscle hole on the cylindricality section and with first stopper muscle hole intercommunication's first stopper muscle seam, first stopper muscle hole and first stopper muscle seam all extend to the other end from cylindricality section axial one end, and first stopper muscle seam extends to the outer wall of cylindricality section, and the toper section is equipped with second stopper muscle hole and the second stopper muscle seam that communicates with second stopper muscle hole, and second stopper muscle hole and second stopper muscle seam all extend to the outer wall of toper section from the axial one end of toper section, and the first stopper muscle hole of cylindricality section is linked together, still is equipped with annular elasticity seam from the axial one end of toper section to the other end, and first stopper muscle seam is equipped with radial seal the annular elasticity seam between the first screw thread portion and the first axial one end of toper section, and the radial seal of the second stopper muscle hole is equipped with the annular elasticity seam between the first end of taper section and the first axial seal, and the second stopper muscle seam is including the radial seal between the first end of taper section and the first axial seal seam of thread portion, and the second stopper seam.
As a preferred mode of the present invention, the width of the first stopper rib slit is 4-10mm smaller than the diameter of the first stopper rib hole. As a preferred mode of the present invention, the width of the second stopper rib slit is 4-10mm smaller than the diameter of the second stopper rib hole. As a preferable mode of the invention, the thickness of the annular elastic seam is 5-15mm, and the width of the radial elastic seam is 3-5mm.
The invention also provides an anchor rod, which comprises an anchor rod body and a bearing plate sleeved on the anchor rod body, wherein a sleeve is sleeved at one axial end of the anchor rod body, a limit clamp is arranged at the other axial end of the bearing plate, a central hole and a tendon penetrating hole are formed in the bearing plate, the anchor rod body is penetrated in the tendon penetrating hole, and the anchor rod further comprises a stopper sleeved on the anchor rod body, and the stopper is the stopper. By adopting the technical scheme of the invention, the universal rubber plug is provided with the rib plugging slits (a first rib plugging slit and a second rib plugging slit) and a first rib plugging hole and a second rib plugging hole for placing the anchor rod body, and the anchor rod body is convenient and efficient to install; the conical section of the universal rubber plug is provided with radial elastic slits and annular elastic slits, and the universal rubber plug can be fixed with the anchor rod body through the lock sleeve; the outer wall of the cylindrical section is provided with a first screw tooth part, so that the cylindrical section is convenient to be matched with a centering bracket or a grouting pipe positioning bracket and the like for use, and the functions are good in expansibility; the universal rubber plug can adjust the number and the diameter of corresponding plug rib seams and plug rib holes according to the number and the diameter of the anchor rod bodies, has good universality and can realize mass production of different specifications and models.
Drawings
Fig. 1 is a drawing showing the installation of a pull-press composite anchor rod for installing a T-shaped connecting sleeve.
Fig. 2 is a schematic view of a T-connection sleeve mounting node of the present invention.
Fig. 3 is a schematic structural view of a first anchor segment according to the present invention.
FIG. 4 is a schematic view of the construction of a second anchor segment of the present invention;
fig. 5 is a cross-sectional view of a T-shaped connector sleeve of the present invention.
FIG. 6 is a cross-sectional view A-A of FIG. 5 in accordance with the present invention.
FIG. 7 is a cross-sectional view B-B of FIG. 5 in accordance with the present invention.
Fig. 8 is a left side view of fig. 5 in accordance with the present invention.
Fig. 9 is a right side view of fig. 5 in accordance with the present invention.
Fig. 10 is a schematic drawing of a tension and compression composite anchor rod with an enhanced bearing plate installed.
Fig. 11 is a longitudinal cross-sectional view of the reinforced bearing plate.
Fig. 12 is a cross-sectional view of the bearing plate of the present invention.
FIG. 13 is a cross-sectional view A-A of FIG. 12 in accordance with the present invention.
FIG. 14 is a cross-sectional view B-B of FIG. 12 in accordance with the present invention.
Fig. 15 is a schematic view of a reinforcing bar according to the present invention.
Fig. 16 is a schematic view of an enhanced bearing plate with circular stirrups according to the present invention.
Fig. 17 is a schematic view of an enhanced bearing plate with spiral stirrups according to the present invention.
Fig. 18 is a cross-sectional view of a node of a tension-compression composite anchor bearing plate with an anti-slip sleeve joint installed.
Fig. 19 is a cross-sectional view of a large sample of the installation of the anti-slip casing joint.
FIG. 20 is a partial cross-sectional view of the portion A-A of FIG. 19 in accordance with the present invention.
FIG. 21 is a partial cross-sectional view of B-B of FIG. 19 in accordance with the present invention.
FIG. 22 is a cross-sectional view of a nipple of the present invention.
FIG. 23 is a cross-sectional view of FIG. 22, taken along line C-C, in accordance with the present invention.
Fig. 24 is a cross-sectional end view of the anti-slip casing joint of the present invention.
Fig. 25 is a cross-sectional view of the screw sleeve of the present invention.
FIG. 26 is a section view D-D of FIG. 25 according to the present invention.
FIG. 27 is a cross-sectional view of a ferrule-to-ferrule connection of the present invention.
FIG. 28 is a cross-sectional view E-E of FIG. 27 in accordance with the present invention.
FIG. 29 is a cross-sectional view of F-F of FIG. 27 in accordance with the present invention.
Fig. 30 is a cross-sectional view of a reinforcement hole of the bearing plate of the present invention.
FIG. 31 is a view showing the completion of the installation of the U-shaped centering bracket of the present invention.
Fig. 32 is a cross-sectional view of a T-shaped plug of the present invention.
FIG. 33 is a cross-sectional view A-A of FIG. 32 in accordance with the present invention.
FIG. 34 is a section B-B of FIG. 32 in accordance with the present invention.
Fig. 35 is a cross-sectional view of a pallet of the present invention.
FIG. 36 is a cross-sectional view C-C of FIG. 35 in accordance with the present invention.
FIG. 37 is a section view D-D of FIG. 35 according to the present invention.
Fig. 38 is a cross-sectional view of a sleeve according to the present invention.
FIG. 39 is a cross-sectional view of a preferred embodiment of a plug body B-B according to the present invention.
FIG. 40 is a schematic cross-sectional view of an anchor rod with a universal rubber stopper installed in accordance with the present invention.
FIG. 41 is a cross-sectional view A-A of FIG. 40 in accordance with the present invention.
FIG. 42 is a cross-sectional view B-B of FIG. 40 in accordance with the present invention.
FIG. 43 is a cross-sectional view C-C of FIG. 40 in accordance with the present invention.
In the figure:
a T-shaped connecting sleeve 10; a first barrel section 101; a second barrel section 102; connecting rib hole 103
A solder joint 104; a pressure-bearing plate 11; a tendon hole 111; grouting pipe perforation 112
A limit card 113; a grouting pipe 12; a bolt body 13; a first anchor rod segment 131;
a second anchor segment 132; a first screw part 133; a second screw part 134;
a sleeve 135; a grouting body 14; a rock mass 15; reinforcing ribs 20; connecting screw 201
Circular stirrups 21; spiral stirrups 22; a rib receiving groove 23; an inner screw 231; screw pipe 30
A first end 301; a second end 302; a mating thread 303; a ferrule 31; a support flange 311;
a screw sleeve 32; a limit flange 321; screwing the screw thread 322; a screw groove 33;
a T-shaped plug 40; a central bore 401; cylindrical section 41; a rib hole 411; first screw thread part 412
A mass reducing aperture 413; a tapered section 42; the rib placing groove 421; a second screw thread portion 422; annular elastic seam 423
Radial elasticity slit 424; a support panel 43; an internal thread portion 431; a guide plate 432;
a lock sleeve 44; an inner screw tooth portion 441; a plug body 50; a first stopper rib seam 501; a first stopper rib hole 502;
a second stopper rib slit 503; second stopper rib hole 504
Detailed Description
For further explanation of the technical solution of the present invention, reference is made to fig. 1 to 43, and the following description is made in detail with reference to the accompanying drawings.
Example 1
Referring first to fig. 1 to 9, a T-shaped connecting sleeve 10 for a pull-press composite anchor rod comprises a T-shaped sleeve body and a connecting rib hole 103 formed in the sleeve body, wherein the connecting rib hole 103 penetrates from one axial end of the sleeve body to the other axial end, the sleeve body is provided with a first barrel section 101 and a first barrel section 102 which are integrally formed, the outer diameter of the first barrel section 101 is smaller than that of the second barrel section 102, and the connecting rib hole 103 is a threaded hole matched with an anchor rod body 13.
As a preferable mode of the invention, the aperture of the connecting rib hole 103 is 10-30mm. As a preferred mode of the invention, the outer diameter of the first barrel section 101 is 16-40mm, and the outer diameter of the second barrel section 102 is 10-20mm larger than the outer diameter of the first barrel section 101. As a preferred form of the invention, the wall thickness of the first barrel section 101 is 3-5mm and the wall thickness of the second barrel section 102 is 8-15mm.
The invention also provides an anchor rod, which comprises an anchor rod body 13 and a bearing plate 11 sleeved on the anchor rod body 13, wherein a sleeve 135 is sleeved at one axial end of the anchor rod body 13 on the bearing plate 11, a T-shaped connecting sleeve 10 is arranged at the other axial end of the anchor rod body 13 on the bearing plate 11, the anchor rod body 13 comprises a first anchor rod segment 131 and a second anchor rod segment 132, a first threaded part 133 is arranged at one end of the first anchor rod segment 131, a second threaded part 134 is arranged at one end of the second anchor rod segment 132, the first threaded part 133 and the second threaded part 134 are both in threaded connection with the connecting rib hole 103, the second barrel segment 102 is welded on the bearing plate 11, and particularly, the end face of the second barrel segment 102 is welded on the bearing plate 11 through spot welding and forms a welding point 104.
The invention relates to a T-shaped connecting sleeve 10 for a pull-press composite anchor rod, which comprises the following construction steps:
(1) Machining a first anchor rod section 131 and a second anchor rod section 132 according to the design of the tension-compression composite anchor rod, and machining a first threaded part 133 and a second threaded part 134 on the first anchor rod section 131 and the second anchor rod section 132 respectively; (2) Screwing the first threaded portion 133 of the first anchor rod segment 131 into the web hole 103 from the second barrel segment 102 of the T-shaped connection sleeve 10, and screwing the second threaded portion 134 of the second anchor rod segment 132 into the web hole 103 from the first barrel segment 101 of the T-shaped connection sleeve 10; (3) The reinforcement penetrating holes 111 of the bearing plate 11 are aligned with the first anchor rod section 131, the bearing plate 11 penetrates into the first anchor rod section 131 and moves to the T-shaped connecting sleeve 10, after being tightly attached to the end face of the second barrel section 102, the bearing plate is fixed by spot welding, and then the sleeve 135 is sleeved on the first anchor rod section 131.
The anchor rod body 13 can adopt the reinforced bar or the steel strand of the anchor rod body 13 in the invention. When the anchor rod body 13 adopts the steel strand wires, the screw thread is cancelled in the connecting rib hole 103, the steel strand wires in the T-shaped connecting sleeve 10 are not broken, after the T-shaped connecting sleeve 10 is directly sleeved into the design position of the steel strand wires, the first barrel section 101 of the T-shaped connecting sleeve 10 is fixed on the steel strand wires through the extrusion action of an extruder, and the installation and the fixation of the T-shaped connecting sleeve 10 on the anchor rod body 13 can be completed.
After the technical scheme of the invention is adopted, during construction, the first anchor rod section 131 and the second anchor rod section 132 of the anchor rod body 13 can be quickly and mechanically connected through the T-shaped connecting sleeve 10, so that the installation is convenient, the quality is reliable, and the bearing capacity is high; the bearing plate 11 can be directly fixed with the second barrel section 102 of the T-shaped connecting sleeve 10 by spot welding, so that the welding workload of welding the bearing plate 11 by adopting the upper bar reinforcing steel bars in the construction process is greatly reduced, and the problem that the upper bar reinforcing steel bars fail due to the welding quality problem is effectively avoided; the second barrel section 102 has an outer diameter larger than that of the first barrel section 101, and the second barrel section 102 can efficiently and reliably transmit load to the bearing plate 11.
Example two
Referring to fig. 10 to 17, the present invention further provides an enhanced bearing plate for a pull-press composite anchor rod, which includes a bearing plate 11, a grouting pipe perforation 112 and a tendon passing hole 111 are provided on the bearing plate 11, a plurality of tendon receiving grooves 23 are provided on one end of the bearing plate 11 along the axial direction, in the embodiment, six tendon receiving grooves 23 are shown, an internal thread 231 is provided in the tendon receiving groove 23, and a plurality of reinforcing tendons 20 are provided, the reinforcing tendons 20 are correspondingly six, and the reinforcing tendons 20 are correspondingly screwed in the tendon receiving grooves 23.
As a preferred embodiment of the present invention, a plurality of the reinforcing ribs 20 are arranged in parallel. As a preferable mode of the invention, the thickness of the bearing plate body is 20-40mm. As a preferable mode of the invention, the diameter of the reinforcing rib 20 is 8-20mm, and the length of the reinforcing rib 20 is 2-5 times of the diameter of the anchor rod drilling hole.
The invention relates to an anchor rod, which comprises an anchor rod body 13 and a reinforced bearing plate sleeved on the anchor rod body 13, wherein a sleeve 135 is sleeved on one axial end of the anchor rod body 13 on the bearing plate 11, a limit clamp 113 is arranged on the other axial end of the anchor rod body 13 on the bearing plate 11, a grouting pipe perforation 112 and a tendon penetration hole 111 are arranged on the bearing plate 11, the anchor rod body 13 is penetrated in the tendon penetration hole 111, a plurality of tendon receiving grooves 23 are arranged on one axial end of the bearing plate 11, a plurality of reinforcing tendons 20 are also included, and the reinforcing tendons 20 are correspondingly connected in the tendon receiving grooves 23 in a threaded manner.
The invention relates to an enhanced bearing plate for a pull-press composite anchor rod, which comprises the following construction steps: (1) Penetrating an anchor rod body 13 into a through-hole 111 of the bearing plate 11, adjusting the bearing plate 11 to a design position, and enabling a rib receiving groove 23 on the bearing plate 11 to point to the anchor head direction; (2) The bearing plate 11 is fixed by a limit clamp 113, a sleeve 135 is sleeved on the anchor rod body 13, and a grouting pipe 12 is penetrated into the grouting pipe perforation 112; (3) The connecting screw thread 201 of the reinforcing rib 20 is screwed into the rib connecting groove 23 of the bearing plate 11 until the screw is screwed; (4) And placing round stirrups 21 or spiral stirrups 22 on the periphery of the reinforcing ribs 20, and firmly binding by spot welding or wire tying, thus finishing the installation of the reinforced bearing plate 11.
By adopting the technical scheme of the invention, the reinforcing ribs 20 can form certain circumferential constraint on the grouting body 14 within the length range, so that the compressive bearing capacity of the grouting body 14 is greatly improved. And the reinforcing ribs 20 can disperse and transfer the load born by part of the bearing plates 11 to the grouting bodies 14 in a certain range in front of the bearing plates 11, so that the effect of sharing the load born by the grouting bodies 14 is achieved, the load born by the grouting bodies 14 at the bottom of the bearing plates 11 is greatly reduced, and the compression-resistant bearing safety coefficient of the grouting bodies 14 is improved. When the bearing plate 11 is clamped with soil to a certain extent due to construction quality, the reinforcing ribs 20 are rigidly connected with the bearing plate 11, so that load transmitted to the grouting body 14 by the bearing plate 11 can be finally transmitted to the grouting body 14 through interaction among the bearing plate, the reinforcing ribs and the grouting body, and bearing damage caused by serious insufficient strength of the grouting body at the bottom of the bearing plate 11 due to soil clamping is effectively avoided, and bearing capacity failure of an anchor rod is further avoided. The reinforcing ribs 20 adopt a threaded connection mode, and have the advantage of convenient construction.
In the first and second embodiments, the icon 15 represents a rock-soil body.
Example III
Referring to fig. 18 to 30, the present invention further provides a grout-proof sleeve joint for a pull-press composite anchor rod, which comprises a threaded pipe 30 in threaded connection with a bearing plate 11, a sleeve pipe 31 sleeved outside a sleeve pipe 135, and a screw sleeve 32 sleeved outside the sleeve pipe 31, specifically, the sleeve pipe 31 is sleeved outside the sleeve pipe 135 in a hot-melt bonding manner, two ends of the threaded pipe 30 in the axial direction are respectively provided with a first end 301 and a second end 302, the first end 301 is in threaded connection with a screw sleeve 32 in a threaded connection groove 33 of the bearing plate 11, a limiting flange 321 extending towards the center of the screw sleeve 32 is formed on the end of the screw sleeve 32, a screwing thread 322 is arranged in the screw sleeve 32, the sleeve pipe 31 is arranged in the screw sleeve 32 in a penetrating manner, a supporting flange 311 is formed in the screw sleeve 32, and the supporting flange 311 is propped against between the end of the threaded pipe 30 and the limiting flange 321 of the screw sleeve 32. The outer wall of the nipple 30 is provided with a butt screw 303, and a screw sleeve 32 is screwed into the nipple 30.
As a preferred form of the invention, the length of the nipple 30 is in the range of 20-50mm. As a preferable mode of the present invention, the bearing plate 11 is provided with a rib penetrating hole 111, a screw groove 33 is provided in the rib penetrating hole 111, and the screw pipe 30 is screwed in the screw groove 33. As a preferred mode of the present invention, the length of the screw groove 33 is 5-10mm. As a preferable mode of the present invention, when the screw sleeve 32 is locked, a distance between an end of the screw sleeve 32 adjacent to the bearing plate 11 and the bearing plate 11 is 5-10mm.
The invention also provides an anchor rod, which comprises an anchor rod body 13 and a bearing plate 11 sleeved on the anchor rod body 13, wherein a sleeve 135 is sleeved on one axial end of the anchor rod body 13 on the bearing plate 11, a limit clamp 113 is arranged on the other axial end of the anchor rod body 13 on the bearing plate 11, grouting pipe perforations 112 and a reinforcement penetrating hole 111 are formed in the bearing plate 11, and the anchor rod body 13 is penetrated in the reinforcement penetrating hole 111.
A prevent cluster thick liquid sleeve joint for drawing compound stock of pressing includes the following step:
(1) Screwing the screwed pipe 30 into the screwed groove 33 of the bearing plate 11; (2) The anchor rod body 13 is penetrated into the threaded pipe 30 and the through-rib hole 111 of the bearing plate 11, the bearing plate 11 is adjusted to the design position, and the limit clamp 113 is fixed; (3) Cutting out the sleeve 135 according to the design length, and after the end head is sleeved into the screw sleeve 32, processing and connecting the sleeve pipe 31 with the sleeve 135; (4) The sleeve 31 mounted on the sleeve 135 is faced to the bearing plate 11, the sleeve 135 is sleeved on the anchor rod body 13 from the anchor head side, the screw sleeve 32 is screwed on the screw tube 30, and the joint mounting is completed when the supporting flange 311 is tightly contacted with the limiting flange 321.
By adopting the technical scheme of the invention, the sleeve 135 is tightly connected with the bearing plate 11 sequentially through the sleeve pipe 31, the screw sleeve 32 and the screw pipe 30, and the connecting parts have no gaps and good sealing performance, so that the isolation between the anchor rod body 13 in the sleeve 135 and the grouting body 14 outside the sleeve 135 can be completely ensured, and the slurry stringing phenomenon in the sleeve 135 can be thoroughly eradicated. Therefore, in the process of transferring the load at the anchor head to the bearing plate 11, the axial tension loss of the anchor rod body 13 cannot occur, and the engineering safety is effectively ensured; meanwhile, the invention has the advantages of convenient manufacture, quick connection, reliable quality and mass production of related parts.
Example IV
Referring to fig. 31 to 39, the present invention further proposes a U-shaped centering bracket for a bolt, comprising a cylindrical support plate 43 and a T-shaped plug 40 disposed in the support plate 43, wherein one end of the support plate 43 in the axial direction is provided with a guide plate 432 extending toward the center of the support plate 43, the T-shaped plug 40 is provided with a central hole 401 through which a grouting pipe 12 passes and a rib hole 411 through which the bolt body 13 passes, the support plate 43 is internally provided with an internal thread portion 431, and the T-shaped plug 40 is provided with a screw thread portion engaged with the internal thread portion 431. In the present invention, the internal thread portion 431 may not be disposed along the inner wall of the supporting plate 43, and in the embodiment, the internal thread portion 431 extends to the middle of the supporting plate 43, so that after the T-shaped plug 40 is installed, the T-shaped plug 40 is located at the middle of the supporting plate 43, and is easy to lock and has better stress.
As a preferred mode of the present invention, the T-shaped plug 40 includes a cylindrical section 41 and a tapered section 42, the screw thread portion is a first screw thread portion 412 formed on an outer wall of the cylindrical section 41, a second screw thread portion 422 is provided on an outer wall of the tapered section 42, the cylindrical section 41 is provided with a rib hole 411 and a central hole 401, the rib hole 411 and the central hole 401 each extend from one end to the other end in an axial direction of the cylindrical section 41, the tapered section 42 is provided with a rib groove 421 and a central hole 401, the rib groove 421 and the central hole 401 each extend from one end to the other end in an axial direction of the tapered section 42, the tapered section 42 is further provided with an annular screw thread 423, the annular screw thread 423 extends from one end to the other end in an axial direction of the tapered section 42, the annular screw thread 423 further includes a radial screw thread 424 provided between the rib groove 421 and the radial screw thread 424, the radial screw thread 424 extends from one end to the other end in an axial direction of the tapered section 42, the radial screw thread 424 extends from the outer wall of the tapered section 42 to the other end, the radial screw thread 423 extends from the outer wall of the tapered section 42 to the annular screw thread 423, and the second screw thread portion 44 is provided with a second screw thread portion 422, and the number of the screw thread portion is equal to the screw thread portion 422 is provided in the screw thread portion.
In a preferred embodiment of the present invention, the guide plate 432 is an arc-shaped guide plate 432, and has a substantially conical shape. As a preferred mode of the present invention, the thickness of the annular elastic slit 423 is 5-15mm, and the width of the radial elastic slit 424 is 3-5mm.
In this embodiment, the number of the rib holes 411 of the T-shaped plug 40 is 4, the 4 rib holes 411 are disposed around the central hole 401, and the central hole 401 of the T-shaped plug 40 and the rib holes 411 are formed on the cylindrical section 41. The T-shaped plug of the present invention may be sold as a separate fitment.
Referring to fig. 39, as a preferable embodiment of the plug body of the present invention, a mass reducing hole 413 is further provided in the plug body.
The invention also provides an anchor rod, which comprises an anchor rod body 13 and a bearing plate 11 sleeved on the anchor rod body 13, wherein a sleeve 135 is sleeved at one axial end of the anchor rod body 13 on the bearing plate 11, a limit clamp 113 is arranged at the other axial end of the anchor rod body 13 on the bearing plate 11, a grouting pipe perforation 112 and a tendon penetrating hole 111 are arranged on the bearing plate 11, the anchor rod body 13 is penetrated in the tendon penetrating hole 111, the anchor rod further comprises a T-shaped plug 40 sleeved on the anchor rod body 13, the T-shaped plug 40 is the T-shaped plug 40, the anchor rod further comprises a cylindrical support plate 43, the T-shaped plug 40 is matched in the support plate 43, a guide plate 432 extending towards the center of the support plate 43 is arranged at one axial end of the support plate 43, an inner threaded portion 431 is arranged in the support plate 43, and a screw tooth portion matched with the inner threaded portion 431 is arranged on the T-shaped plug 40. In an embodiment, the grouting pipe perforation 112 of the bearing plate 11 is coaxially disposed with the central hole 401 of the T-shaped plug 40, and the tendon hole 111 of the bearing plate 11 is coaxially disposed with the tendon hole 411 of the cylindrical section 41 of the T-shaped plug 40 and the tendon groove 421 of the tapered section 42 of the T-shaped plug 40.
The invention relates to a U-shaped centering bracket for an anchor rod, which comprises the following construction steps:
(1) Pre-screwing the lock sleeve 44 into the tapered section 42 of the T-shaped plug 40, the depth of screwing the lock sleeve 44 into the tapered section 42 is about 1/4-1/2 of the width of the lock sleeve 44; (2) Pre-screwing the support plate 43 onto the cylindrical section 41 of the T-plug 40 with the guide plates 432 and the conical section 42 on either side of the cylindrical section 41; (3) The guide plate 432 of the preassembled centering bracket is directed to the bottom of the anchor rod body 13, the anchor rod body 13 sequentially passes through the rib placing hole 411 and the rib placing groove 421 of the T-shaped plug 40, and the grouting pipe 12 passes through the central hole 401 of the T-shaped plug 40; (4) The centering bracket penetrating the anchor rod body 13 is moved to a design position, the lock sleeve 44 is screwed to be tight, and the support panel 43 is screwed to be tight, so that the installation of the U-shaped centering bracket is completed.
The supporting plate 43 of the centering bracket is cylindrical, has large contact area with the hole wall and small contact pressure, cannot sink into soil body of the hole wall, and can ensure that the anchor rod body 13 is always positioned at the centering position in the construction process and ensure the bonding force between the rod body and the grouting body 14; the support panel 43 is provided with the guide plate 432, so that the anchor rod body 13 can easily slide into a drilled hole in the process of being placed into the drilled hole, the cutting and disturbance of a reinforcing steel bar welding bracket to a hole wall soil body can be effectively avoided, and soil body residues in the drilled hole are reduced; the centering bracket has simple components and is convenient for mass production and manufacture.
The limit stop 113 according to the invention can be implemented with the T-shaped coupling sleeve 10 according to the invention.
Example five
Referring to fig. 40 to 43, the present invention further provides a universal rubber plug for isolating and centering an anchor rod body 13, comprising a plug body 50, wherein a central hole 401 (for penetrating a grouting pipe 12) is arranged on the plug body 50, the central hole 401 penetrates from one axial end to the other axial end of the plug body 50, the plug body 50 comprises a cylindrical section 41 and a conical section 42, the cylindrical section 41 and the conical section 42 can be integrally formed, the outer wall of the cylindrical section 41 forms a first screw thread part 412, the outer wall of the conical section 42 forms a second screw thread part 422, the cylindrical section 41 is provided with a first plug rib hole 502 and a first plug rib slot 501 communicated with the first plug rib hole 502, the first plug rib hole 502 and the first plug rib slot 501 extend from one axial end to the other axial end of the cylindrical section 41, the first plug rib slot 501 extends to the outer wall of the cylindrical section 41, the conical section 42 is provided with a second plug rib hole 504 and a second plug rib slot 503 communicated with the second plug rib hole 504, the second bung hole 504 and the second bung slot 503 extend from one axial end of the conical section 42 to the other axial end, the second bung slot 503 is communicated with the first bung slot 501 on the cylindrical section 41, the second bung slot 503 extends to the outer wall of the conical section 42, the conical section 42 is also provided with an annular elastic slot 423, the annular elastic slot 423 extends from one axial end of the conical section 42 to the other axial end, the annular elastic slot 423 is arranged between the second bung slot 504 and the second bung slot 503, the second bung slot comprises a radial elastic slot 424 arranged on the conical section 42, the radial elastic slot 424 extends from one axial end of the conical section 42 to the other axial end, the radial elastic slot 424 penetrates from the outer wall of the conical section 42 to the annular elastic slot 423, the second bung slot 44 is also provided with a lock sleeve 44 screwed on the second screw part 422, the inner wall of the lock sleeve 44 is provided with inner screw parts 441 matched with the second screw part 422, the second bung slot 504 and the first bung slot 502 are equal in number, and are communicated with each other.
As a preferred mode of the present invention, the width of the first stopper rib slit 501 is 4-10mm smaller than the diameter of the first stopper rib hole 502. As a preferred mode of the present invention, the width of the second stopper rib slit 503 is 4-10mm smaller than the diameter of the second stopper rib hole 504. As a preferred mode of the present invention, the thickness of the annular elastic slit 423 is 5-15mm, and the width of the radial elastic slit 424 is 3-5mm.
The invention relates to a universal rubber plug for the isolation and centering of an anchor rod body, which comprises the following construction steps:
(1) Penetrating the anchor rod body 13 into the lock sleeve 44, moving the lock sleeve 44 to the vicinity of the designed position on the anchor rod body 13, and placing the stopper body 50 to the designed position on the anchor rod body 13; (2) Sequentially plugging the anchor rod body 13 into a first stopper rib hole 502 and a second stopper rib hole 504 of the stopper body 50 through a first stopper rib seam 501 and a second stopper rib seam 503; (3) Sequentially penetrating the grouting pipe 12 into the lock sleeve 44 and the central hole 401 of the plug body 50; (4) The lock sleeve 44 is screwed onto the second screw thread part 422 of the conical section 42 until the lock sleeve is tightly closed, and the universal rubber plug is installed.
By adopting the technical scheme of the invention, the universal rubber plug is provided with the first plug rib seam 501, the second plug rib seam 503, the first plug rib hole 502 and the second plug rib hole 504 for placing the anchor rod body 13, the anchor rod body 13 can be installed from the side edge of the plug body, the construction is convenient, and the construction speed is high; the conical section 42 of the universal rubber plug is provided with a radial elastic seam 424 and an annular elastic seam 423, and the universal rubber plug and the anchor rod body 13 can be locked and fixed through the lock sleeve 44; the outer wall of the cylindrical section 41 is provided with a first screw tooth part 412, so that the cylindrical section is convenient to be matched with a centering bracket or a ship-shaped bracket panel and the like for use, and the functions have good expansibility; the number and the diameter of the corresponding first stopper rib holes 502 and the second stopper rib holes 504 can be adjusted according to the number and the diameter of the anchor rod bodies 13 by the universal rubber stopper, so that the universal rubber stopper has good universality and can be used for mass production of different specifications and models.
The invention also provides an anchor rod, which comprises an anchor rod body 13 and a bearing plate 11 sleeved on the anchor rod body 13, wherein a sleeve 135 is sleeved on one axial end of the anchor rod body 13 on the bearing plate 11, a limit clamp 113 is arranged on the other axial end of the anchor rod body 13 on the bearing plate 11, a grouting pipe perforation 112 and a tendon penetrating hole 111 are arranged on the bearing plate 11, the anchor rod body 13 is penetrated in the tendon penetrating hole 111, the anchor rod further comprises a plug body 50 sleeved on the anchor rod body 13, a central hole 401 is arranged on the plug body 50, the central hole 401 penetrates from one axial end to the other axial end of the plug body 50, and the plug body 50 adopts the plug body.
The centering bracket, the T-shaped connecting sleeve, the universal plug, the T-shaped plug and the slurry-preventing sleeve joint can be used in the same anchor rod, so that the comprehensive performance of the anchor rod is improved.
The form of the present invention is not limited to the illustrations and examples, and any person who performs a similar idea of the present invention should be regarded as not departing from the scope of the patent of the invention.

Claims (8)

1. A universal rubber stopper for stock body of rod keeps apart and centering, including the cock body, be equipped with the centre bore on the cock body, the centre bore runs through to the other end from cock body axial one end, its characterized in that: the plug body comprises a cylindrical section and a conical section, a first screw tooth part is formed on the outer wall of the cylindrical section, a second screw tooth part is formed on the outer wall of the conical section, a first plug rib hole and a first plug rib seam communicated with the first plug rib hole are formed on the cylindrical section, the first plug rib hole and the first plug rib seam extend from one axial end of the cylindrical section to the other end, the first plug rib seam extends to the outer wall of the cylindrical section, the conical section is provided with a second plug rib hole and a second plug rib seam communicated with the second plug rib hole, the second plug rib hole and the second plug rib seam extend from one axial end of the conical section to the other end, the second plug rib seam extends to the outer wall of the conical section, the second plug rib hole of the conical section is communicated with the first plug rib hole of the cylindrical section, an annular elastic seam is further arranged on the conical section, the annular elastic seam extends from one axial end of the conical section to the other end, the annular elastic seam is arranged between the second plug rib hole and the second plug rib seam, the second plug rib seam is further arranged on the radial seam, the second plug rib seam is arranged on the second screw tooth part and the second screw tooth part, and the screw tooth part is arranged on the second screw tooth part and is matched with the second screw tooth part.
2. A universal rubber stopper for bolt body isolation and centering as defined in claim 1, wherein: the width of the first stopper rib seam is 4-10mm smaller than the diameter of the first stopper rib hole.
3. A universal rubber stopper for bolt body isolation and centering as defined in claim 1, wherein: the width of the second stopper rib seam is 4-10mm smaller than the diameter of the second stopper rib hole.
4. A universal rubber stopper for bolt body isolation and centering as claimed in claim 3, wherein: the thickness of the annular elastic seam is 5-15mm, and the width of the radial elastic seam is 3-5mm.
5. The utility model provides an anchor rod, includes the stock body and overlaps and establish the bearing plate at the stock body, and the stock body is equipped with the sleeve pipe in bearing plate axial one end cover, and the stock body is equipped with spacing card in bearing plate axial other end, is equipped with the centre bore on the bearing plate and wears the muscle hole, the stock body wears to establish in wearing the muscle hole, still establishes including the cover the cock body on the stock body is equipped with the centre bore on the cock body, and the centre bore runs through to the other end from cock body axial one end, its characterized in that: the plug body comprises a cylindrical section and a conical section, a first screw tooth part is formed on the outer wall of the cylindrical section, a second screw tooth part is formed on the outer wall of the conical section, a first plug rib hole and a first plug rib seam communicated with the first plug rib hole are formed on the cylindrical section, the first plug rib hole and the first plug rib seam extend from one axial end of the cylindrical section to the other end, the first plug rib seam extends to the outer wall of the cylindrical section, the conical section is provided with a second plug rib hole and a second plug rib seam communicated with the second plug rib hole, the second plug rib hole and the second plug rib seam extend from one axial end of the conical section to the other end, the second plug rib seam extends to the outer wall of the conical section, the second plug rib hole of the conical section is communicated with the first plug rib hole of the cylindrical section, an annular elastic seam is further arranged on the conical section, the annular elastic seam extends from one axial end of the conical section to the other end, the annular elastic seam is arranged between the second plug rib hole and the second plug rib seam, the second plug rib seam is further arranged on the radial seam, the second plug rib seam is arranged on the second screw tooth part and the second screw tooth part, and the screw tooth part is arranged on the second screw tooth part and is matched with the second screw tooth part.
6. A rock bolt according to claim 5, wherein: the width of the first stopper rib seam is 4-10mm smaller than the diameter of the first stopper rib hole.
7. A rock bolt according to claim 6, wherein: the width of the second stopper rib seam is 5-10mm smaller than the diameter of the second stopper rib hole.
8. A rock bolt according to claim 7, wherein: the thickness of the annular elastic seam is 5-15mm, and the width of the radial elastic seam is 3-5mm.
CN201910249070.3A 2019-03-29 2019-03-29 Universal rubber plug for isolating and centering anchor rod body and anchor rod Active CN110195434B (en)

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CN110195434B true CN110195434B (en) 2023-12-19

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203022782U (en) * 2013-01-06 2013-06-26 李文靖 Hole-sealing and grout-stopping anchor part
CA2994061A1 (en) * 2016-11-25 2018-05-25 China University Of Mining And Technology Supporting method of an extensible reaming self-anchoring anchor rod
CN108385679A (en) * 2018-06-01 2018-08-10 宁波它山奇境文化旅游发展有限公司 Reinforce the tension type prestressed anchor and method of soft rock class beded rock mass
CN209923923U (en) * 2019-03-29 2020-01-10 华侨大学 Universal rubber plug for isolating and centering anchor rod body and anchor rod

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203022782U (en) * 2013-01-06 2013-06-26 李文靖 Hole-sealing and grout-stopping anchor part
CA2994061A1 (en) * 2016-11-25 2018-05-25 China University Of Mining And Technology Supporting method of an extensible reaming self-anchoring anchor rod
CN108385679A (en) * 2018-06-01 2018-08-10 宁波它山奇境文化旅游发展有限公司 Reinforce the tension type prestressed anchor and method of soft rock class beded rock mass
CN209923923U (en) * 2019-03-29 2020-01-10 华侨大学 Universal rubber plug for isolating and centering anchor rod body and anchor rod

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
新型拉压复合型锚杆锚固性能研究Ⅲ:现场试验;涂兵雄;蔡燕燕;何锦芳;俞缙;许国平;程强;;岩土工程学报(第05期);全文 *

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