CN109026103B - Expanding extrusion friction anchor rod and anchor cable structure - Google Patents
Expanding extrusion friction anchor rod and anchor cable structure Download PDFInfo
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- CN109026103B CN109026103B CN201810832757.5A CN201810832757A CN109026103B CN 109026103 B CN109026103 B CN 109026103B CN 201810832757 A CN201810832757 A CN 201810832757A CN 109026103 B CN109026103 B CN 109026103B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 33
- 239000011435 rock Substances 0.000 abstract description 21
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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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- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A diameter-expanding extrusion friction anchor rod and anchor cable structure belongs to the technical field of coal rock body power support and soft rock support, and comprises a sleeve, a large-diameter area, a diameter-expanding area, a small-diameter area, a nut, a tray, a limiter, a rod body, a cable body, a stirrer, a linear groove, a clamping piece, a guide groove and an anchor, wherein a constant resistance is generated by diameter-expanding extrusion and friction of an anchor rod tube expander or an anchor cable tube expander and the sleeve, a deformation amount is provided by relative sliding of the anchor rod tube expander or the anchor cable tube expander, a certain high-support constant resistance is provided for a supported surrounding rock body, the supported surrounding rock body is always in a three-dimensional compression stress state, an annular support pressure arch with higher thickness is further formed, the diameter-expanding extrusion friction rod body or the cable body structure can axially slide to cooperatively deform with the supported surrounding rock body to absorb a certain amount of deformation energy and impact energy, and finally constant-resistance support and yielding energy absorption are achieved, the stability of the supported surrounding rock mass is guaranteed to the maximum extent.
Description
Technical Field
The invention belongs to the technical field of coal-rock mass power support and soft rock support, and particularly relates to an expanded diameter extrusion friction anchor rod and anchor cable structure.
Background
In coal mines, metal mines, water conservancy, tunnels and other geotechnical engineering, the anchor rod is an efficient and widely applied active support member. However, with the economic development of China, the engineering scale is continuously enlarged, and the facing geological conditions are increasingly complex. In shallow rock mass engineering, under the action of external factors such as earthquake, artificial disturbance, water and the like or internal factors such as the self expansibility of a rock mass, the rock mass loses bearing capacity, and disasters such as large deformation, landslide, collapse and the like occur; the rock mass in a deep part in a high ground stress state is easy to have disasters such as soft rock large deformation and the like, meanwhile, accidents such as rock burst, mine earthquake and the like frequently occur, and the conventional support anchor rod has low elongation and poor impact resistance, and the problem of anchor rod breakage failure is frequent and serious. Therefore, the actual engineering needs a strong demand for anchor rods/cables that can provide high constant resistance and at the same time have large deformation capacity.
Chinese patent No. 201010196197.2 discloses a constant resistance large deformation stock, its constant resistance device internal surface be equipped with body of rod matched with helicitic texture, provide the operating resistance through shearing constant resistance device screw thread and extrusion constant resistance device, nevertheless the in-process of shearing the screw thread can make constant resistance unstable, and the screw thread of being cut can produce the heap effect, lead to the body of rod to be difficult to follow endwise slip, influence structure deformability, simultaneously, when the rock mass taken place the large deformation by strutting, the operating resistance that accumulational screw thread can make the stock sharply rises, take place the problem that the stock broke apart the inefficacy even. Chinese patent No. 201410483046.3 discloses an extrusion, friction type energy-absorbing anchor rod, which generates working resistance by the contact of wedge-shaped pillar stand extrusion energy-absorbing lining pipe and friction pillar stand with the extruded energy-absorbing lining pipe, but in the extrusion process, because the wedge-shaped pillar stand is in line-to-line contact with polygonal lining pipe or with polygonal casing pipe to surface-to-surface contact, the working resistance is unstable, and the energy-absorbing lining pipe is a thin-wall pipe, it is easy to generate progressive buckling by axial pressure in the extrusion friction process, the structure extrusion friction function is disabled, and the structure stability is damaged. Chinese patent No. 201710556137.9 discloses an extrusion friction type constant-resistance yielding large-deformation anchor rod, which provides constant resistance to the extrusion friction of a sleeve through steel balls, but the steel balls are in point-line contact with the sleeve, the contact area is small, so the generated constant resistance is small, the steel balls are not integral components, the stress of the rod body is uneven when a single or a plurality of steel balls are damaged, the working performance of the anchor rod is damaged, and instability damage is easy to occur.
In a word, the conventional anchor rod has low elongation and poor impact resistance and is difficult to meet engineering requirements, and the conventional large-deformation energy-absorbing anchor rod has unstable constant resistance or easy instability of the structure due to the defects of respective principles and structures, so that the effect is not ideal.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme:
an expanding extrusion friction anchor rod and anchor cable structure is divided into an external type and an internal type, wherein the external type comprises a sleeve, the sleeve comprises a large-diameter area, an expanding area and a small-diameter area, a nut and a tray are arranged on the outer wall of the large-diameter area of the sleeve, a limiter is arranged at one end, away from the expanding area, of the small-diameter area of the sleeve, an anchor rod tube expander or an anchor cable tube expander is arranged on the inner wall of the expanding area of the sleeve, a rod body is arranged in an inner hole of the anchor rod tube expander, and a cable body;
the built-in type sleeve comprises a large-diameter area, an expanding area and a small-diameter area, wherein an inner hole of one end, far away from the expanding area, of the small-diameter area of the sleeve is provided with a limiter, the large-diameter area of the sleeve is provided with a stirrer, an anchor rod tube expander or an anchor cable tube expander is arranged on the inner wall of the expanding area of the sleeve, a rod body is arranged in the inner hole of the anchor rod tube expander, one end of the rod body is tightly attached to the inner end of the stirrer, a tray and a nut are arranged on the outer wall of the; the anchor rope expander is characterized in that a cable body is arranged in an inner hole of the anchor rope expander, one end of the cable body is tightly attached to the inner end of the stirrer, a tray and an anchor are arranged at the other end of the cable body, and the tray is close to one end of the sleeve.
The external sleeve is provided with external threads in a large diameter area, and the internal sleeve is provided with internal threads in a large diameter area.
The limiter and the small diameter area of the sleeve are of an integrally formed structure or are in threaded connection with the small diameter area of the sleeve, and the inner diameter of the middle hole of the limiter is larger than the outer diameter of the rod body or the cable body.
The anchor rod pipe expander comprises an anchor rod circular truncated cone-shaped expansion head and an anchor rod cylindrical fixing head, the large end of the anchor rod circular truncated cone-shaped expansion head is provided with an anchor rod cylindrical fixing head, the outer diameter of the anchor rod cylindrical fixing head is smaller than or equal to the outer diameter of the large end of the anchor rod circular truncated cone-shaped expansion head, the inner holes of the anchor rod circular truncated cone-shaped expansion head and the anchor rod cylindrical fixing head are provided with internal threads, and the end face, far away from the end face of the anchor rod circular truncated cone-shaped expansion head, of the anchor rod cylindrical.
The anchor cable pipe expander comprises an anchor cable round table-shaped expansion head and an anchor cable cylindrical fixing head, wherein the large end of the anchor cable round table-shaped expansion head is provided with an anchor cable cylindrical fixing head, the outer diameter of the anchor cable cylindrical fixing head is smaller than or equal to the outer diameter of the large end of the anchor cable round table-shaped expansion head, a through hole is formed in the middle of the anchor cable round table-shaped expansion head, and the anchor cable cylindrical fixing head is of a single-hole clamping piece type or a multi-hole clamping piece type structure.
The outer surface of the anchor rod round table-shaped expansion head or the anchor cable round table-shaped expansion head is provided with a guide groove, or the outer surface of the anchor rod round table-shaped expansion head or the anchor cable round table-shaped expansion head is set to be a smooth surface.
The stirrer comprises a first cylinder, a second cylinder and a T-shaped block, one end of the first cylinder is fixedly mounted with one end of the second cylinder, the other end of the second cylinder is fixedly mounted with the large end of the T-shaped block, and the outer diameter of the second cylinder is larger than that of the first cylinder.
The invention has the advantages that,
1. the invention generates constant resistance through expanding extrusion and friction of the anchor rod tube expander or the anchor cable tube expander and the sleeve, provides deformation through relative sliding of the anchor rod tube expander or the anchor cable tube expander, not only provides certain high-support constant resistance for the supported surrounding rock body, and leads the supported surrounding rock body to be always in a three-dimensional compression stress state, thereby forming an annular support pressure arch with higher thickness, but also can absorb a certain amount of deformation energy and impact energy through axial sliding of the expanding extrusion friction rod body or the cable body structure, and finally achieves the effects of constant-resistance support and yielding energy-absorbing support, thereby ensuring the stability of the supported surrounding rock body to the maximum extent.
2. The sleeve is a thick-wall reducing pipe which is beneficial to radial expansion of the sleeve, the expander is of a two-section structure and is matched with the rod body or the cable body more closely, so that the constant resistance of the structure is more stable, the safety is higher, meanwhile, the sleeve is provided with the limiter, the displacement of the anchor rod expander or the anchor cable expander is limited after the anchor rod expander or the anchor cable expander reaches the maximum displacement, the diameter-expanding extrusion friction rod body or cable body structure has the mechanical property of the common rod body or cable body, the mechanical properties of the rod body or cable body and the sleeve are continuously exerted, the safety of the supported and enclosed rock mass is better guaranteed, the anchor rod expander is in threaded fit with the rod body or the anchor cable expander is in clamping piece fit with the cable body, and the anchor rod expander is safe, reliable, simple in structure.
3. The device can provide larger deformation and higher constant resistance, and has strong shock resistance and high stability.
Drawings
FIG. 1 is a schematic view of an external expanding and extruding friction anchor rod structure of the device of the invention;
FIG. 2 is a right side view of the external expanding extrusion friction anchor rod structure of the device of the present invention;
FIG. 3 is a schematic view of the structure of the bushing of the present invention;
fig. 4-1 is a schematic view of the anchor rod expander structure of the present invention;
fig. 4-2 is a left side view of the anchor rod expander of the present invention;
fig. 4-3 are sectional views a-a of the anchor rod expander of the present invention;
FIG. 5 is a schematic view of an external diameter-expanding extrusion friction anchor cable structure of the device of the present invention;
fig. 6-1 is a schematic view of the anchor cable expander of the present invention;
fig. 6-2 is a left side view of the anchor cable expander structure of the present invention;
fig. 6-3 are cross-sectional views of anchor cable expander B-B of the present invention;
FIG. 7 is a schematic view of the structure of a built-in expanding extrusion friction anchor rod of the device;
FIG. 8 is a schematic view of the construction of the agitator of the present invention;
FIG. 9 is a schematic structural view of a built-in expanding extrusion friction anchor cable of the device of the present invention;
1-sleeve, 2-large diameter area, 3-expanding area, 4-small diameter area, 5-nut, 6-tray, 7-limiter, 8-anchor rod expander, 9-anchor cable expander, 10-rod body, 11-cable body, 12-stirrer, 13-anchor rod frustum-shaped expanding head, 14-anchor rod cylindrical fixing head, 15-I-shaped groove, 16-clamping piece, 17-guide groove, 18-anchor cable frustum-shaped expanding head, 19-anchor cable cylindrical fixing head, 20-first cylinder, 21-second cylinder, 22-T-shaped block and 23-anchor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1-3 and 4-1-4-3, an expanding extrusion friction anchor rod structure is an external type, and comprises a sleeve 1, wherein the sleeve 1 comprises a large diameter area 2, an expanding area 3 and a small diameter area 4, a nut 5 is screwed on the outer wall of the large diameter area 2 of the sleeve 1, the nut 5 is a high-strength nut, a tray 6 is arranged at one end of the nut 5 close to the expanding area 3 of the sleeve 1, the tray 6 is a metal butterfly tray, a stopper 7 is arranged at one end of the small diameter area 4 of the sleeve 1 far away from the expanding area 3, the stopper 7 and the small diameter area 4 are of an integral structure or the stopper 7 is screwed with the small diameter area 4, the installation mode of the stopper 7 and the small diameter area 4 can be selected according to specific construction requirements, the inner diameter of a through hole of the stopper 7 is larger than the outer diameter of a rod body 10, the stopper 7 can limit the displacement of the anchor rod expander 8 after the maximum slippage, the mechanical properties of the rod body 10 and the sleeve 1 are continuously exerted, the inner wall of the diameter expansion area 3 of the sleeve 1 is provided with an anchor rod tube expander 8, the anchor rod tube expander 8 comprises an anchor rod circular truncated cone-shaped expansion head 13 and an anchor rod cylindrical fixing head 14, the anchor rod cylindrical fixing head 14 is used for fixedly installing the anchor rod tube expander 8, the structural working resistance is not influenced, the large end of the anchor rod circular truncated cone-shaped expansion head 13 is provided with the anchor rod cylindrical fixing head 14, the outer diameter of the anchor rod cylindrical fixing head 14 is smaller than or equal to the outer diameter of the large end of the anchor rod circular truncated cone-shaped expansion head 13, inner holes of the anchor rod circular truncated cone-shaped expansion head 13 and the anchor rod cylindrical fixing head 14 are both provided with internal threads, the end face of the anchor rod cylindrical fixing head 14 far away from the end face of the anchor rod circular truncated cone-shaped expansion head 13 is provided with a linear groove 15, when water is accumulated in the sleeve 1, the anchor rod expander 8 with the guide groove 17 is selected, when the anchor rod expander 8 with the smooth outer surface is selected under the condition that no water is accumulated, the inner hole of the anchor rod expander 8 is in threaded connection with the rod body 10, when the rod body 10 is pulled, the anchor rod frustum-shaped expander 13 of the anchor rod expander 8 expands the diameter of the sleeve 1, extrudes and rubs to generate constant resistance, and the displacement is provided by relative sliding of the anchor rod frustum-shaped expander 13 and the sleeve 1.
Example 2
As shown in fig. 5 and fig. 6-1 to 6-3, an expanding extrusion friction anchor cable structure is an external expanding extrusion friction anchor cable structure, and comprises a sleeve 1, wherein the sleeve 1 comprises a large diameter area 2, an expanding area 3 and a small diameter area 4, a nut 5 is screwed on the outer wall of the large diameter area 2 of the sleeve 1, the nut 5 is a high-strength nut, a tray 6 is arranged at one end of the nut 5 close to the expanding area 3 of the sleeve 1, the tray 6 is a metal butterfly tray, a stopper 7 is arranged at one end of the small diameter area 4 of the sleeve 1 far from the expanding area 3, the stopper 7 and the small diameter area 4 are in an integral structure or the stopper 7 is screwed with the small diameter area 4, the installation mode of the stopper 7 and the small diameter area 4 can be selected according to specific construction requirements, the inner diameter of a through hole of the stopper 7 is larger than the outer diameter of a rod body 10, the stopper 7 can limit the displacement of the anchor cable after a tube expander 9 reaches the maximum, the mechanical properties of the rod body 10 and the sleeve 1 are continuously exerted, an anchor cable tube expander 9 is arranged on the inner wall of the diameter expansion area 3 of the sleeve 1, the anchor cable tube expander 9 comprises an anchor cable cone-shaped expansion head 18 and an anchor cable cylindrical fixing head 19, the anchor cable cylindrical fixing head 19 is used for fixedly installing the anchor cable tube expander 9 and does not influence the structural working resistance, the anchor cable cone-shaped expansion head 18 is provided with an anchor cable cylindrical fixing head 19 at the large end, the outer diameter of the anchor cable cylindrical fixing head 19 is smaller than or equal to the outer diameter of the large end of the anchor cable cone-shaped expansion head 18, a through hole is formed in the middle of the anchor cable cone-shaped expansion head 18, the anchor cable cylindrical fixing head 19 is of a single-hole clamping piece 16 or multi-hole clamping piece 16 type structure, the single-hole clamping piece 16 and the multi-hole clamping piece 16 are selected according to specific construction requirements, the outer surface of the, when accumulated water exists in the sleeve 1, the anchor cable expander 9 with the guide groove 17 is selected, when the accumulated water does not exist, the anchor cable expander 9 with the smooth outer surface is selected, the cable body 11 is arranged in the inner hole of the anchor cable expander 9, and the anchor cable expander 9 is fixedly installed with the cable body 11 through the clamping piece 16.
Example 3
As shown in fig. 7 and 8, an expanding extrusion friction anchor rod structure is a built-in expanding extrusion friction anchor rod structure, and includes a sleeve 1, the sleeve 1 includes a large diameter area 2, an expanding area 3 and a small diameter area 4, an inner hole of one end of the small diameter area 4 of the sleeve 1 far from the expanding area 3 is provided with a stopper 7, the stopper 7 and the small diameter area 4 are an integral structure or the stopper 7 is screwed with the small diameter area 4, the installation mode of the stopper 7 and the small diameter area 4 can be selected according to specific construction requirements, the inner diameter of a through hole of the stopper 7 is larger than the outer diameter of a rod body 10, the stopper 7 can limit the displacement of an anchor rod expander 8 after the anchor rod expander 8 reaches the maximum slippage, the mechanical properties of the rod body 10 and the sleeve 1 are continuously exerted, the large diameter area 2 of the sleeve 1 is provided with a stirrer 12, the stirrer 12 includes a first cylinder 20, a second cylinder 21 and a T-shaped block 22, the T-shaped block 22 is used for stirring, the second cylinder 21 is used for screwing the stirrer 12 on the inner wall of the casing 1, the first cylinder 20 is contacted with the rod body 10 and extruded, so that the first cylinder 20 can drive the whole structure to rotate when the rod body 10 rotates, the anchoring agent is fully stirred, one end of the first cylinder 20 is fixedly installed with one end of the second cylinder 21, the other end of the second cylinder 21 is fixedly installed with the large end of the T-shaped block 22, the outer diameter of the second cylinder 21 is larger than that of the first cylinder 20, the stirrer 12 can be an integrally formed structure consisting of the first cylinder 20, the second cylinder 21 and the T-shaped block 22, or can be a structure assembled by the first cylinder 20, the second cylinder 21 and the T-shaped block 22, the stirrer 12 can fully stir the anchoring agent and prevent foreign matters from entering the casing 1, the inner wall of the expanding area 3 of the casing 1 is provided with the anchor rod expander 8, the anchor rod expander 8 comprises an anchor rod frustum-shaped expanding head 13 and an anchor rod cylindrical fixing head 14, the anchor rod cylindrical fixing head 14 is used for fixedly mounting the anchor rod pipe expander 8, the structural working resistance is not influenced, the large end of the anchor rod circular truncated cone-shaped expansion head 13 is provided with the anchor rod cylindrical fixing head 14, the outer diameter of the anchor rod cylindrical fixing head 14 is smaller than or equal to the outer diameter of the large end of the anchor rod circular truncated cone-shaped expansion head 13, inner holes of the anchor rod circular truncated cone-shaped expansion head 13 and the anchor rod cylindrical fixing head 14 are both provided with internal threads, the end face, far away from one end of the anchor rod circular truncated cone-shaped expansion head 13, of the anchor rod cylindrical fixing head 14 is provided with a linear groove 15, the outer surface of the anchor rod circular truncated cone-shaped expansion head 13 is provided with a guide groove 17 or the outer surface of the anchor rod circular truncated cone-shaped expansion head 13 is provided with a smooth surface, the anchor rod pipe expander 8 with the guide groove 17 is selected when water is accumulated in the sleeve 1, the anchor rod pipe expander 8 with the, the outer wall of the other end of the rod body 10 is provided with a tray 6 and a nut 5, the nut 5 is arranged to be a high-strength nut, the tray 6 is arranged to be a metal butterfly-shaped tray, and the tray 6 is close to one end of the sleeve 1.
Example 4
As shown in fig. 9, an expanding extrusion friction anchor cable structure is a built-in expanding extrusion friction anchor cable structure, which includes a sleeve 1, the sleeve 1 includes a large diameter area 2, an expanding area 3 and a small diameter area 4, an inner hole of one end of the small diameter area 4 of the sleeve 1 far from the expanding area 3 is provided with a stopper 7, the stopper 7 and the small diameter area 4 are an integral structure or the stopper 7 is screwed with the small diameter area 4, the installation mode of the stopper 7 and the small diameter area 4 can be selected according to specific construction requirements, the inner diameter of a through hole of the stopper 7 is larger than the outer diameter of a cable body 11, the stopper 7 can limit the displacement of the anchor cable expander 9 after the anchor cable expander 9 reaches the maximum amount, the mechanical properties of the cable body 11 and the sleeve 1 are continuously exerted, the large diameter area 2 of the sleeve 1 is provided with a stirrer 12, the stirrer 12 includes a first cylinder 20, a second cylinder 21 and a T-shaped block 22, the T-shaped block 22 is used for stirring the, the second cylinder 21 is used for screwing the stirrer 12 on the inner wall of the casing 1, the first cylinder 20 is in contact with and extrudes the cable body 11, so that the first cylinder 20 can drive the whole structure to rotate when the cable body 11 rotates, the anchoring agent is fully stirred, one end of the first cylinder 20 is fixedly arranged with one end of the second cylinder 21, the other end of the second cylinder 21 is fixedly arranged with the large end of the T-shaped block 22, the outer diameter of the second cylinder 21 is larger than that of the first cylinder 20, the stirrer 12 can be an integrally formed structure consisting of the first cylinder 20, the second cylinder 21 and the T-shaped block 22, or can be a structure assembled by the first cylinder 20, the second cylinder 21 and the T-shaped block 22, the stirrer 12 can fully stir the anchoring agent and prevent foreign matters from entering the casing 1, the inner wall of the diameter expansion area 3 of the casing 1 is provided with the anchor cable expander 9, the anchor cable expander 9 comprises an anchor cable frustum-shaped expansion head 18 and an anchor cable cylindrical fixing head, the cylindrical anchor cable fixing head 19 is used for fixedly mounting the anchor cable tube expander 9, the working resistance of the structure is not affected, the cylindrical anchor cable fixing head 19 is arranged at the large end of the anchor cable round platform-shaped expansion head 18, the outer diameter of the cylindrical anchor cable fixing head 19 is smaller than or equal to the outer diameter of the large end of the anchor cable round platform-shaped expansion head 18, a through hole is formed in the middle of the anchor cable round platform-shaped expansion head 18, the cylindrical anchor cable fixing head 19 is of a single-hole clamping piece 16 or multi-hole clamping piece 16 type structure, the single-hole clamping piece 16 and the multi-hole clamping piece 16 are selected according to specific construction requirements, the outer surface of the anchor cable round platform-shaped expansion head 18 is provided with a guide groove 17 or the outer surface of the anchor cable round platform-shaped expansion head 18 is set to be a smooth surface, the anchor cable tube expander 9 with the guide groove 17 is selected when water accumulation exists in the sleeve, one end of the cable body 11 is tightly attached to the inner end of the stirrer 12, the other end of the cable body 11 is provided with an anchorage device 23 and a tray 6, the anchorage device 23 is a single-hole clip type anchorage device and can also be a multi-hole clip type anchorage device according to actual requirements, the tray 6 is a metal butterfly tray, and the tray 6 is close to one end of the sleeve 1.
The working principle of the invention is that when the axial tension on the rod body 10 or the cable body 11 is smaller than the constant resistance of the structure, the anchor rod round table-shaped expansion head 13 or the anchor cable round table-shaped expansion head 18 and the sleeve 1 are in a static state; when the axial tension on the rod body 10 or the cable body 11 is greater than the constant resistance of the structure, the anchor rod round table-shaped expansion head 13 or the anchor cable round table-shaped expansion head 18 and the sleeve 1 slide relatively to provide displacement, and deform in coordination with the supported surrounding rock body to absorb a certain amount of deformation energy and impact energy, so that the effects of constant-resistance support and abdication energy-absorption support are achieved, and when the anchor rod tube expander 8 or the anchor cable tube expander 9 contacts the limiter 7, the limiter 7 limits the displacement of the anchor rod tube expander 8 or the anchor cable tube expander 9 to ensure that the rod body 10 or the cable body 11 cannot fall off from the sleeve 1, so that the mechanical properties of the rod body 10 or the cable body 11 and the sleeve 1 are continuously exerted, and the stability of the supported surrounding rock body is ensured to the maximum extent.
Claims (4)
1. An expanding extrusion friction anchor rod and anchor cable structure is divided into an external type and an internal type, and is characterized in that the external type comprises a sleeve, the sleeve comprises a large-diameter area, an expanding area and a small-diameter area, a nut and a tray are arranged on the outer wall of the large-diameter area of the sleeve, a limiter is arranged at one end, away from the expanding area, of the small-diameter area of the sleeve, an anchor rod tube expander or an anchor cable tube expander is arranged on the inner wall of the expanding area of the sleeve, and a rod body is arranged in an inner hole of the; a cable body is arranged in an inner hole of the anchor cable tube expander;
the built-in type sleeve comprises a large-diameter area, an expanding area and a small-diameter area, wherein an inner hole of one end, far away from the expanding area, of the small-diameter area of the sleeve is provided with a limiter, the large-diameter area of the sleeve is provided with a stirrer, an anchor rod tube expander or an anchor cable tube expander is arranged on the inner wall of the expanding area of the sleeve, a rod body is arranged in the inner hole of the anchor rod tube expander, one end of the rod body is tightly attached to the inner end of the stirrer, a tray and a nut are arranged on the outer wall of the; a cable body is arranged in an inner hole of the anchor cable tube expander, one end of the cable body is tightly attached to the inner end of the stirrer, a tray and an anchorage device are arranged at the other end of the cable body, and the tray is close to one end of the sleeve;
the anchor rod pipe expander comprises an anchor rod circular table-shaped expansion head and an anchor rod cylindrical fixing head, wherein the large end of the anchor rod circular table-shaped expansion head is provided with an anchor rod cylindrical fixing head, the outer diameter of the anchor rod cylindrical fixing head is smaller than or equal to the outer diameter of the large end of the anchor rod circular table-shaped expansion head, inner holes of the anchor rod pipe expander circular table-shaped expansion head and the cylindrical fixing head are provided with inner threads, and the end face, away from the circular table-shaped expansion head, of the cylindrical fixing head is provided with a linear groove;
the anchor cable pipe expander comprises an anchor cable round-table-shaped expansion head and an anchor cable cylindrical fixing head, wherein the large end of the anchor cable round-table-shaped expansion head is provided with the anchor cable cylindrical fixing head, the outer diameter of the anchor cable cylindrical fixing head is smaller than or equal to the outer diameter of the large end of the anchor cable round-table-shaped expansion head, the middle part of the anchor cable round-table-shaped expansion head is provided with a through hole, and the anchor cable cylindrical fixing head is of a single-hole clamping piece or a multi-hole clamping;
the stirrer comprises a first cylinder, a second cylinder and a T-shaped block, one end of the first cylinder is fixedly mounted with one end of the second cylinder, the other end of the second cylinder is fixedly mounted with the large end of the T-shaped block, and the outer diameter of the second cylinder is larger than that of the first cylinder.
2. The expanding extrusion friction anchor rod and cable structure of claim 1, wherein: the external sleeve is provided with external threads in a large diameter area, and the internal sleeve is provided with internal threads in a large diameter area.
3. The expanding extrusion friction anchor rod and cable structure of claim 1, wherein: the limiter and the small diameter area of the sleeve are of an integrally formed structure or are in threaded connection with the small diameter area of the sleeve, and the inner diameter of the middle hole of the limiter is larger than the outer diameter of the rod body or the cable body.
4. The expanding extrusion friction anchor rod and cable structure of claim 1, wherein: the outer surface of the anchor rod round table-shaped expansion head or the anchor cable round table-shaped expansion head is provided with a guide groove, or the outer surface of the anchor rod round table-shaped expansion head or the anchor cable round table-shaped expansion head is set to be a smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832757.5A CN109026103B (en) | 2018-07-26 | 2018-07-26 | Expanding extrusion friction anchor rod and anchor cable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832757.5A CN109026103B (en) | 2018-07-26 | 2018-07-26 | Expanding extrusion friction anchor rod and anchor cable structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026103A CN109026103A (en) | 2018-12-18 |
| CN109026103B true CN109026103B (en) | 2020-03-17 |
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Family Applications (1)
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| CN201810832757.5A Active CN109026103B (en) | 2018-07-26 | 2018-07-26 | Expanding extrusion friction anchor rod and anchor cable structure |
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| CN110067582B (en) * | 2019-05-05 | 2020-04-21 | 中国矿业大学 | Anchor rod for surrounding rock supporting and instability monitoring and mounting method thereof |
| CN110145350A (en) * | 2019-06-05 | 2019-08-20 | 北京矿冶科技集团有限公司 | A kind of pulling force dispersing type twin-stage constant-resistance stress release anchor pole |
| CN110307022B (en) * | 2019-07-16 | 2024-03-08 | 北京诚田恒业煤矿设备有限公司 | Anti-crease deformation constant-resistance energy absorbing device |
| CN111648804B (en) * | 2020-06-11 | 2022-03-11 | 新汶矿业集团有限责任公司华丰煤矿 | Resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
| CN111648805B (en) * | 2020-06-11 | 2021-11-09 | 新汶矿业集团有限责任公司华丰煤矿 | Resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
| CN111720148B (en) * | 2020-06-22 | 2022-03-04 | 辽宁大学 | Section coal pillar self-anchoring opposite-pulling anti-scour anchor cable and using method thereof |
| CN112282810A (en) * | 2020-11-04 | 2021-01-29 | 重庆大学 | Large-deformation self-adaptive energy release anchor rod |
| CN112412510B (en) * | 2020-11-23 | 2021-10-01 | 中国矿业大学 | Large-deformation lift-drag anti-shear anchor cable and construction method and working method thereof |
| CN112796809A (en) * | 2020-12-31 | 2021-05-14 | 河海大学 | Monitoring device and monitoring method for constant-resistance large-deformation anchor cable |
| CN113027500B (en) * | 2021-03-31 | 2023-01-10 | 泰安泰烁岩层控制科技有限公司 | Outward-expansion friction type constant-resistance energy-absorbing anchor cable and using method thereof |
| CN114934800B (en) * | 2022-07-26 | 2022-10-04 | 华北科技学院(中国煤矿安全技术培训中心) | Spring lock type constant-resistance energy-absorbing anchor cable and use method thereof |
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| JP2001090067A (en) * | 1999-09-22 | 2001-04-03 | Kamishimagumi:Kk | Rock bolt and rock-bolt execution method |
| CN203296794U (en) * | 2013-04-25 | 2013-11-20 | 安徽理工大学 | Yielding extensible fiber reinforced plastic anchor rod |
| CN103670466B (en) * | 2013-11-28 | 2016-04-13 | 尤洛卡（山东）深部地压防治安全技术有限公司 | A kind of constant-resistance deformer and using method thereof |
| CN104265339B (en) * | 2014-09-19 | 2016-08-24 | 辽宁工程技术大学 | A kind of extruding, friction-type energy-absorption anchor rod |
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