CN114251113A - Anchoring device for enhancing anchoring force of anchor cable - Google Patents
Anchoring device for enhancing anchoring force of anchor cable Download PDFInfo
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- CN114251113A CN114251113A CN202111356756.6A CN202111356756A CN114251113A CN 114251113 A CN114251113 A CN 114251113A CN 202111356756 A CN202111356756 A CN 202111356756A CN 114251113 A CN114251113 A CN 114251113A
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- 238000004873 anchoring Methods 0.000 title claims abstract description 98
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011435 rock Substances 0.000 abstract description 18
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000005553 drilling Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0046—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0073—Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides an anchoring device for enhancing anchoring force of an anchor cable, which comprises: the connecting part is of a cylindrical structure, and an external thread is arranged at one end of the connecting part; the clamping piece is embedded between the anchor cable and the connecting part and is used for fixing the anchor cable and the connecting part; the expansion part comprises a cylindrical section and a hollow conical section, internal threads are arranged in the cylindrical section, and the cylindrical section is in threaded connection with one end of the connecting part; the hollow conical section is characterized in that a gap penetrating through the inside and the outside of the side wall is formed in the side wall of the hollow conical section, the gap extends to the tip end of the hollow conical section, a hole penetrating through the inside and the outside is formed in the conical end of the hollow conical section, and inverted teeth are arranged on the outer wall surface of the hollow conical section. The device has effectively solved the problem that the anchor rope surface does not have the screw thread, has strengthened the stability of anchor rope anchoring performance in the weak rock matter, has promoted anchoring ability.
Description
Technical Field
The invention belongs to the technical field of anchor rope anchoring, and particularly relates to an anchoring device for enhancing the anchoring force of an anchor rope.
Background
Since the 20 th century, anchor cable anchoring technology has been rapidly developed in the global scope, and is particularly important for engineering fields such as railway tunnels, mines, hydropower and the like. With the continuous development of engineering construction, the common prestressed anchor cable is anchored into a rock body by an anchor head through a drilling hole when meeting the anchorage of a weak rock body inevitably in the construction process, and a rock body broken zone and a stable surrounding rock are connected together, so that the shear strength of a soil body is improved, the displacement of the soil body is inhibited, and the important effect on enhancing the stability of the surrounding rock is achieved.
However, under some special weak geological conditions, the drilling holes of the soft rock are not smooth and even easy to collapse, the anchoring agent in the soft rock body cannot be fully stirred, the bonding effect of the anchoring agent and the hole wall is seriously affected, the anchoring force of the anchor rope is obviously reduced, and even the anchoring quality of the anchor rope cannot meet the requirement.
Although the method of stirring the anchoring agent can play a certain anchoring role at present, the anchoring capability of the anchoring agent cannot be fully exerted, so that the anchoring capability of the anchor cable cannot be effectively improved. It is therefore necessary to find a method in addition to the method of stirring the anchoring agent and to form a corresponding device for reinforcing the anchoring force, which will have an important effect in the field of reinforcing surrounding rocks.
Disclosure of Invention
The invention aims to provide an anchoring device for enhancing the anchoring force of an anchor cable, which at least solves the problem that an anchoring agent cannot effectively anchor surrounding rocks under the condition of weak rock quality at present.
In order to achieve the above purpose, the invention provides the following technical scheme:
an anchoring device for enhancing the anchoring force of a cable bolt, the anchoring device comprising:
the connecting part is of a cylindrical structure, a cylindrical space of the connecting part is used for placing and fixing an anchor cable, and an external thread is arranged at one end part of the connecting part;
the clamping piece is embedded between the anchor cable and the connecting part and is used for fixing the anchor cable and the connecting part;
the expansion part comprises a cylindrical section and a hollow conical section, internal threads are arranged in the cylindrical section, the cylindrical section is in threaded connection with one end of the connecting part, and the length of the external threads at one end of the connecting part is greater than that of the internal threads of the cylindrical section; the hollow conical section is characterized in that a gap penetrating through the inside and the outside of the side wall is formed in the side wall of the hollow conical section, the gap extends to the tip end of the hollow conical section, a hole penetrating through the inside and the outside is formed in the conical end of the hollow conical section, and inverted teeth are arranged on the outer wall surface of the hollow conical section.
In the anchoring device for enhancing the anchoring force of the anchor cable as described above, preferably, the connecting portion includes a first connecting member, an anchor and a second connecting member which are connected in sequence;
the first connecting piece, the anchorage device and the second connecting piece are all cylindrical structures;
one end of the first connecting piece is a cylindrical section, the other end of the first connecting piece is a hexagonal cylindrical section, internal threads are arranged in the cylindrical section, external threads are arranged at one end of the anchorage device, and the first connecting piece is in threaded connection with one end of the anchorage device;
the other end of the anchor is provided with internal threads, the outer surface of the second connecting piece is provided with external threads, and the second connecting piece is in threaded connection with the other end of the anchor;
the length of the second connecting piece is not less than the sum of the length of the internal thread of the anchor and the length of the expansion part.
In the anchoring device for enhancing the anchoring force of the anchor cable as described above, preferably, the hexagonal prism section of the first connecting member has a hollow cylindrical structure inside.
In the anchoring device for enhancing the anchoring force of the anchor cable, preferably, the clamping piece comprises a plurality of clamping pieces, the clamping pieces surround to form a circular truncated cone structure with a hollow center, threads are arranged on the inner wall surfaces of the clamping pieces, and the clamping pieces are sleeved on the periphery of the anchor cable and embedded between the anchor device and the anchor cable.
In the anchoring device for enhancing the anchoring force of the anchor cable, preferably, the center of the clamping piece is a cylindrical hole with the same inner diameter, and the thickness of the outer wall of the clamping piece gradually increases from the upper bottom surface to the lower bottom surface;
preferably, the clips are provided in three.
In the anchoring device for enhancing the anchoring force of the anchor cable, preferably, the outer wall surface of the hollow conical section is provided with a plurality of inverted teeth, and the inverted teeth are staggered up and down and are uniformly distributed on the outer wall surface of the hollow conical section.
In the anchoring device for enhancing anchoring force of the anchor rope as described above, preferably, the inner diameter of the cylindrical section of the expansion part is in the range of 28 to 105 mm; the outer diameter ranges from 32mm to 120 mm.
In the anchoring device for enhancing the anchoring force of the anchor rope, preferably, the external thread section of the anchorage device has an external diameter ranging from 28mm to 105 mm; the inner diameter range is 24-90 mm; the cylinder inner diameter range of the hexagonal prism section of the first connecting piece is 24-90mm, and the wall thickness is 4 mm.
In the anchoring device for enhancing the anchoring force of the anchor rope as described above, preferably, the length of the second connecting member is equal to the sum of the length of the internal thread of the anchor and the length of the expansion portion.
In the anchoring device for enhancing the anchoring force of the anchor cable as described above, preferably, the hollow tapered section of the expansion portion is made of steel.
Has the advantages that:
according to the anchoring device for enhancing the anchoring force of the anchor cable, after the expansion part is completely expanded, the expansion part is tightly embedded into the rock body, so that the mechanical anchoring capability is enhanced, and the phenomenon of infirm anchoring caused by insufficient stirring of the anchoring agent is effectively avoided.
The device effectively solves the problem that the surface of the anchor cable is not provided with threads, the clamping piece is tightly embedded with the anchor device, and then the second connecting piece with the external threads is connected, so that the effect that the anchor device is not loosened when the anchor device is turned into the expansion part is achieved, the stability of the anchoring performance of the anchor cable in soft rock is enhanced, and the anchoring capability of the anchor cable is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:
FIG. 1 is a schematic structural view of an anchoring device according to an embodiment of the present invention after assembly;
FIG. 2 is a schematic structural view of the first connecting member of FIG. 1;
FIG. 3 is a schematic view of the anchor of FIG. 1;
FIG. 4 is a schematic structural view of the second connector of FIG. 1;
FIG. 5 is a schematic view showing the structure of the expansion part of FIG. 1;
FIG. 6 is a front view of a hollow conical section of an expansion in an embodiment of the invention;
fig. 7 is a schematic structural diagram of a clip according to an embodiment of the invention.
In the figure: 1. a first connecting member; 1.1, a hexagonal prism section; 1.2, a cylindrical section; 2. an anchorage device; 3. a second connecting member; 4. an expansion part; 4.1, a cylindrical section; 4.2, a hollow conical section; 4.3, chamfering; 4.4, gaps; 5. a clip.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 to 7, according to an embodiment of the present invention, there is provided an anchoring device for enhancing an anchoring force of a cable bolt, the anchoring device including a connecting portion, a clamping member, and an expansion portion 4.
Connecting portion are the tubular structure, and the cylindric space of connecting portion is used for placing and fixed anchor rope, and one end of connecting portion is provided with the external screw thread.
In the embodiment of the invention, the connecting part comprises a first connecting piece 1, an anchorage device 2 and a second connecting piece 3 which are connected in sequence.
The first connecting piece 1, the anchorage device 2 and the second connecting piece 3 are all cylindrical structures.
One end of the first connecting piece 1 is a cylindrical section 1.2, the other end of the first connecting piece is a hexagonal cylindrical section 1.1, internal threads are arranged inside the cylindrical section 1.2, external threads are arranged at one end of the anchorage device 2, and the first connecting piece 1 is in threaded connection with one end of the anchorage device 2; the other end of ground tackle 2 is provided with the internal thread, and the surface of second connecting piece 3 all is provided with the external screw thread, second connecting piece 3 and the other end spiro union of ground tackle 2.
The length of the second connecting piece 3 is not less than the sum of the length of the internal thread of the anchorage device 2 and the length of the expansion part 4, so that in the process of installing the anchor cable, the second connecting piece can completely enter the expansion part 4 to expand and anchor the expansion part 4 in the soft rock.
The clamping piece is embedded between the anchor cable and the connecting part and used for fixing the anchor cable and the connecting part.
In the embodiment of the invention, the clamping piece comprises a plurality of clamping pieces 5, the clamping pieces 5 surround to form a circular truncated cone structure with a hollow center, the inner wall surface of each clamping piece 5 is provided with a thread, and the clamping pieces 5 are sleeved on the periphery of the anchor cable and embedded between the anchorage device 2 and the anchor cable. The inner wall surface of the clamping piece 5 is provided with threads for improving the friction force between the clamping piece 5 and the anchor cable, so that the anchor cable is firmly fixed in the connecting part. The section of the clamping piece 5 is wedge-shaped, and the inner wall surface of the clamping piece 5 can also be provided with an inclined serration structure for increasing the friction force and ensuring that the connection is more firm.
The center of the clamping piece is a cylindrical hole with the same inner diameter, and the thickness of the outer wall of the clamping piece is gradually increased from the upper bottom surface to the lower bottom surface; the wall thickness of holder increases gradually is for in the installation, imbeds the holder gradually to connecting portion in, and it is more convenient to install simultaneously can fix the anchor rope tighter, and clamping piece 5 deepens more and more connecting portion, and the connecting piece fastens together with the anchor rope more, reaches the effect of fixed connection spare on the anchor rope.
Preferably, the clips 5 are provided in three, in order to better let the constructor knock them into the connection.
In the specific embodiment of the invention, the inner part of the hexagonal prism section 1.1 of the first connecting piece 1 is of a hollow cylinder structure, so that an anchor cable can conveniently penetrate through the hollow cylinder structure. The hexagonal prism section 1.1 of the first connecting part 1 has a cylinder internal diameter in the range of 24 to 90mm (e.g. 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm) and a wall thickness of 4 mm.
The external thread section of the anchorage device 2 has an outer diameter ranging from 28mm to 105mm (e.g., 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100 mm); an inner diameter in the range of 24-90mm (e.g. 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80 mm); since the cylindrical section 1.2 of the first connecting member 1 is threadedly engaged with the externally threaded section of the anchor 2, the inner diameter of the cylindrical section 1.2 of the first connecting member 1 is in the range of 28-105mm (e.g. 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm), and the wall thickness of the cylindrical section 1.2 is 4 mm.
The reason that one end of the first connecting piece 1 is arranged to be hexagonal prism-shaped is that the clamping piece 5 is more convenient to install, in the installation process of the connecting portion, before the anchor cable stretches into the anchor hole, the first connecting piece 1 is firstly sleeved into the anchor 2 from the end portion of the anchor cable, and then the clamping piece 5 is knocked into the anchor 2 from the left end of the anchor 2 by constructors (namely, an external thread section), and then the clamping piece 5 has a part which is difficult to enter the anchor 2. Therefore, the left side of the first connecting piece 1 is arranged to be in a nut shape (a hexagonal prism section 1.1) so that a constructor can screw the left side of the first connecting piece 1 by a wrench to enable the first connecting piece to be pre-tightened with the anchorage device 2; the effect of pre-tightening the two devices (i.e. the anchorage 2 and the first connecting part 1) is achieved when the constructor twists with the wrench.
The root part (namely the lower bottom surface) of the clamping piece 5 is the thickest, the first connecting piece 1 is screwed by a spanner to ensure that the thickest root part of the clamping piece 5 enters the anchorage device 2, the anchor cable, the clamping piece 5 and the anchorage device 2 are tightly fixed together, and the anchorage device 2 is fixed and can not move randomly.
The expansion part 4 comprises a cylindrical section 4.1 and a hollow conical section 4.2, internal threads are arranged in the cylindrical section 4.1, the cylindrical section 4.1 is in threaded connection with one end of the connecting part, and the length of the external threads at one end of the connecting part is greater than that of the internal threads of the cylindrical section 4.1; be provided with on the lateral wall of hollow toper section 4.2 and run through inside and outside gap 4.4 of lateral wall, gap 4.4 extends to the pointed end of hollow toper section 4.2, and the toper tip of hollow toper section 4.2 is provided with the hole that runs through inside and outside the lateral wall, is provided with pawl 4.3 on the outer wall of hollow toper section 4.2. The gap 4.4 and the hole are arranged on the outer wall surface of the hollow conical section 4.2, so that the hollow conical section 4.2 of the expansion part 4 is expanded easily in the drilling process of the anchor cable, and the inverted tooth 4.3 is embedded into soft rock to achieve the effect of anchoring and increasing the efficiency. In other embodiments of the invention, during the drilling process of the anchor cable driven by the drill bit, the pressure in the drill hole is applied, and the direction of the external thread of the cylindrical section 3 is opposite to the direction of the internal thread of the cylindrical section 4.1, so that the expansion part 4 cannot rotate along with the anchor 2.
In the specific embodiment of the invention, the outer wall surface of the hollow conical section 4.2 is provided with a plurality of inverted teeth 4.3, and the inverted teeth 4.3 are staggered up and down and are uniformly distributed on the outer wall surface of the hollow conical section 4.2. The inverted teeth 4.3 are arranged in a backward inclined manner, and in the embodiment of the invention, the direction along the anchor cable drilling direction is defined as front, and the reverse direction is defined as back.
In the specific embodiment of the invention, three gaps 4.4 are arranged on the hollow conical section 4.2, the hollow conical section 4.2 is divided into three blocks, and each wall surface is provided with 9 inverted teeth 4.3.
In a particular embodiment of the invention, the inner diameter of the cylindrical section 4.1 of the expansion 4 is in the range 28-105mm (e.g. 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100 mm); the outer diameter is in the range of 32-120mm (e.g. 35mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 115 mm). The second connecting member 3 is screwed with the expansion part 4, so that the outer diameter of the second connecting member 3 is in the range of 28-105mm (e.g. 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm), and the second connecting member 3 is a hollow cylindrical member with a wall thickness of 4 mm.
In the embodiment of the present invention, the length of the second connecting member 3 is equal to the sum of the length of the internal thread of the anchor 2 and the length of the expansion part 4. The length of the expansion 4 represents the generatrix length of the cylindrical section 4.1 plus the centre line length of the hollow conical section 4.2.
In the specific embodiment of the invention, the hollow conical section 4.2 of the expansion part 4 is made of steel, has certain toughness and is convenient to expand in the drilling process.
Example 1
The anchoring device for enhancing the anchoring force of the anchor rope comprises an anchor 2 penetrating on the anchor rope, a clamping piece 5 embedded in the anchor 2, a first connecting piece 1 and a second connecting piece 3 which are connected with the left and the right of the anchor 2, and an expansion part 4 connected with the second connecting piece 3.
The left part of the first connecting piece 1 is in a nut shape (namely a hexagonal prism section 1.1), the interior of the first connecting piece is in a hollow cylindrical shape, the inner diameter of the first connecting piece is 24mm, the thickness of the first connecting piece is 4mm, and the length of the first connecting piece is 50 mm; the right part of the cylinder is hollow and cylindrical, the inner diameter of the cylinder is 28mm, the outer diameter of the cylinder is 32mm, the length of the cylinder is 25mm, and a left-handed internal thread is arranged in the hollow cylinder and is 25mm long.
The total length of the anchorage device 2 is 75mm, the left part is provided with a right-handed external thread, the length of the right-handed external thread is 25mm, the left-handed external thread can be connected with the internal thread of the hollow cylinder, and the length of the internal thread of the right part is 25 mm. The inner diameter of the hollow smooth inner cylinder at the left part is 24mm, the outer diameter is 28mm, and the length is 50 mm; the length of the right part hollow smooth outer cylinder is 50mm, wherein the inner diameter is 28mm, the outer diameter is 32mm, and the length is 25 mm.
The length of the second connecting piece 3 is 100mm, the inner diameter is 24mm, the outer diameter is 28mm, the outer surface is provided with external threads, and the second connecting piece 33 is connected with the anchorage device 2.
The anchoring device comprises a first connecting piece 1, an anchoring tool 2 and a second connecting piece 3, wherein three clamping pieces 5 are embedded into the anchoring tool 2 from the left end along an anchor rope, the clamping pieces 5 are enclosed to form a hollow circular truncated cone shape, the thickness of the clamping pieces 5 from the top end to the root part is from thin to thick, the clamping pieces 5 are embedded into the anchoring tool 2, the outer end of the anchoring tool is exposed, the first connecting piece 1 needs to be used for pre-tightening, and then the second connecting piece 3 is connected with the anchoring tool 2 to form the anchoring device.
The left end of the expansion part 4 is cylindrical, the length is 25mm, the inner diameter is 28mm, the outer diameter is 32mm, and an internal thread is arranged; the right end of the hollow conical section is in a hollow conical shape, the length of the hollow conical section is 50mm, three gaps 4.4 extending to the end openings are formed in the wall surface of the hollow conical section 4.2, the hollow conical section 4.2 is divided into three iron sheets, and each iron sheet is provided with 9 backward inclined inverted teeth 4.3.
The assembly and use processes of the anchoring device for enhancing the anchoring force of the anchor cable are respectively as follows:
the assembling process comprises the following steps: the end part of the anchor cable steel strand firstly passes through the first connecting piece 1 and then passes through the anchorage device 2, and the left end of the anchorage device 2 is locked with the anchor cable steel strand through the clamping piece 5; then a spanner is used for rotating the first connecting piece 1 to be connected with the external thread of the anchorage device 2, so that the clamping piece 5 is pre-tightened; the second connecting element 3 is then connected to the anchoring device 2 to form a connecting device, which is drilled into the expansion 4 to form an anchoring device.
The use process comprises the following steps: the anchor rope stretches into the drill hole, after the connecting device is connected, the drilling machine is started, the drilling machine rotates the anchor rope to drive the connecting device to start rotating, the exposed part of the second connecting piece 3 slowly drills into the expansion part 4, when the exposed part of the second connecting piece 3 completely penetrates into the expansion part 4, the iron sheet is completely expanded, and the inverted teeth 4.3 on the iron sheet are embedded into the weak rock mass, so that the effect of anchoring synergy is achieved.
In conclusion, the anchoring device for enhancing the anchoring force of the anchor cable enhances the mechanical anchoring capability through the tight embedding of the expansion part and the rock body after the expansion part is completely expanded, and effectively avoids the phenomenon of weak anchoring caused by insufficient stirring of the anchoring agent.
The device effectively solves the problem that the surface of the anchor cable is not provided with threads, the clamping piece is tightly embedded with the anchor device, and then the second connecting piece with the external threads is connected, so that the effect that the anchor device is not loosened when the anchor device is turned into the expansion part is achieved, the stability of the anchoring performance of the anchor cable in soft rock is enhanced, and the anchoring capability of the anchor cable is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An anchoring device for enhancing the anchorage force of a cable bolt, said anchoring device comprising:
the connecting part is of a cylindrical structure, a cylindrical space of the connecting part is used for placing and fixing an anchor cable, and an external thread is arranged at one end part of the connecting part;
the clamping piece is embedded between the anchor cable and the connecting part and is used for fixing the anchor cable and the connecting part;
the expansion part comprises a cylindrical section and a hollow conical section, internal threads are arranged in the cylindrical section, the cylindrical section is in threaded connection with one end of the connecting part, and the length of the external threads at one end of the connecting part is greater than that of the internal threads of the cylindrical section; the hollow conical section is characterized in that a gap penetrating through the inside and the outside of the side wall is formed in the side wall of the hollow conical section, the gap extends to the tip end of the hollow conical section, a hole penetrating through the inside and the outside is formed in the conical end of the hollow conical section, and inverted teeth are arranged on the outer wall surface of the hollow conical section.
2. An anchoring device for enhancing the anchoring force of a cable bolt according to claim 1, wherein said connecting portion comprises a first connecting member, an anchor and a second connecting member connected in series;
the first connecting piece, the anchorage device and the second connecting piece are all cylindrical structures;
one end of the first connecting piece is a cylindrical section, the other end of the first connecting piece is a hexagonal cylindrical section, internal threads are arranged in the cylindrical section, external threads are arranged at one end of the anchorage device, and the first connecting piece is in threaded connection with one end of the anchorage device;
the other end of the anchor is provided with internal threads, the outer surface of the second connecting piece is provided with external threads, and the second connecting piece is in threaded connection with the other end of the anchor;
the length of the second connecting piece is not less than the sum of the length of the internal thread of the anchor and the length of the expansion part.
3. An anchoring device for enhancing the anchoring force of a cable bolt according to claim 2, wherein the hexagonal prism section of said first connecting member is internally of a hollow cylindrical structure.
4. The anchoring device for enhancing the anchoring force of the anchor rope as claimed in claim 3, wherein said clamping member comprises a plurality of clamping pieces, said plurality of clamping pieces are surrounded to form a central hollow circular truncated cone structure, the inner wall surfaces of said clamping pieces are provided with threads, and said clamping pieces are sleeved on the periphery of said anchor rope and embedded between said anchor device and said anchor rope.
5. An anchoring device for enhancing the anchoring force of a cable bolt according to claim 4, wherein said clamping member has a cylindrical hole in the center thereof, said hole having the same inner diameter, and wherein the thickness of the outer wall of said clamping member increases from the upper bottom surface to the lower bottom surface;
preferably, the clips are provided in three.
6. An anchoring device for enhancing the anchoring force of a cable bolt according to claim 4, wherein a plurality of inverted teeth are provided on the outer wall surface of said hollow conical section, and are uniformly distributed on the outer wall surface of said hollow conical section in a staggered manner.
7. An anchoring device for enhancing the anchorage of a cable bolt as claimed in claim 6, wherein the cylindrical section of the expansion portion has an internal diameter in the range 28-105 mm; the outer diameter ranges from 32mm to 120 mm.
8. An anchoring device for enhancing the anchorage of a cable bolt as claimed in claim 7, wherein the external threaded section of the anchor has an external diameter in the range 28-105 mm; the inner diameter range is 24-90 mm; the cylinder inner diameter range of the hexagonal prism section of the first connecting piece is 24-90mm, and the wall thickness is 4 mm.
9. An anchoring device for enhancing the anchoring force of a cable bolt according to claim 2, wherein the length of said second connector is equal to the sum of the length of the internal thread of said anchor and the length of said expansion.
10. An anchoring device for enhancing the anchoring force of a cable bolt according to claim 1, wherein the hollow conical section of said expansion is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356756.6A CN114251113A (en) | 2021-11-16 | 2021-11-16 | Anchoring device for enhancing anchoring force of anchor cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356756.6A CN114251113A (en) | 2021-11-16 | 2021-11-16 | Anchoring device for enhancing anchoring force of anchor cable |
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| CN114251113A true CN114251113A (en) | 2022-03-29 |
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| CN202111356756.6A Pending CN114251113A (en) | 2021-11-16 | 2021-11-16 | Anchoring device for enhancing anchoring force of anchor cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125971A (en) * | 2022-07-14 | 2022-09-30 | 济南百合园林集团有限公司 | Technical method for ecological restoration of damaged mountain side slope |
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2021
- 2021-11-16 CN CN202111356756.6A patent/CN114251113A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125971A (en) * | 2022-07-14 | 2022-09-30 | 济南百合园林集团有限公司 | Technical method for ecological restoration of damaged mountain side slope |
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