CN216477416U - Yielding anchor cable - Google Patents
Yielding anchor cable Download PDFInfo
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- CN216477416U CN216477416U CN202123279278.1U CN202123279278U CN216477416U CN 216477416 U CN216477416 U CN 216477416U CN 202123279278 U CN202123279278 U CN 202123279278U CN 216477416 U CN216477416 U CN 216477416U
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Abstract
The utility model relates to a yielding anchor cable, which comprises a cable body, an outer sleeve, a nut and a tray sleeved on the outer sleeve, and a yielding block fixedly connected with one end of the outer sleeve, wherein the tray is positioned at one side of the nut close to the yielding block, and a yielding hole which is communicated along the axial direction is arranged in the yielding block; the cable body is including being located the section of stepping down of outer sleeve inner chamber, and certainly the section of stepping down extends to wear out the free section in hole is pressed to stepping down, and the external diameter of the section of stepping down is greater than the hole diameter of stepping down, lets through the toper transition between section and the free section. The utility model discloses a set up the section of stepping down of uplift on the cable body, when rock burst, through stepping down the section and stepping down the briquetting cooperation, step by step extrusion deformation of section through stepping down the pressure hole, realize the constant resistance and step down, simple to operate lets press parameter accessible to change length, the external diameter of the section of stepping down and step down the hole size and realize the adjustment.
Description
Technical Field
The utility model relates to an anchor rope technical field of usefulness is strutted or is consolidated in mine tunnel or geotechnical engineering, especially involves the constant resistance and lets press the anchor rope, specifically is a let and press the anchor rope.
Background
The anchor cable has been widely used in supporting or reinforcing mine roadways, tunnels, revetments and deep foundation pits. However, with the increase of the mining depth of the mine, the geological disasters such as large deformation of the tunnel or rock burst and the like are also increased, and the conventional anchor cable is not suitable for the complicated and difficult geological condition due to low elongation, so that the anchor cable can be broken, and roof collapse or tunnel collapse accidents can occur. The yielding anchor cable releases energy in surrounding rocks of the roadway through the extension of the anchor cable, so that the supporting resistance is reduced, and the stability of the roadway is maintained at a low cost; and secondly, the anchor cable is not damaged and broken when bearing larger impact load.
At present, the domestic yielding anchor cable is mainly divided into two types: one is that a butterfly-shaped tray is adopted, the shape or structure of the anchorage device is changed, and a deformable sleeve or a gasket is added between the tray and the anchorage device; this solution is simple in construction, but allows a small amount of deformation. According to the utility model, the novel patent CN201347765Y is used, the pressure yielding device is arranged between the tray and the lockset, the pressure yielding amplitude of the pressure yielding device is generally not more than 50mm, and the exposed length of the anchor cable is increased while the pressure yielding is realized. The other is a sleeve friction type, and constant resistance yielding is realized by generating friction resistance between the anchorage device and the inner wall of the steel pipe. For example, the invention patent 2014102419058 adopts a sleeve structure, and chemical grouting materials are adhered on the inner wall of the sleeve, the sleeve structure has a larger outer diameter, and a hole is enlarged when the anchor cable is installed, so that the requirement on the homogeneity of the grouting materials is high.
Disclosure of Invention
The utility model discloses to prior art not enough, provide a let and press anchor rope, when realizing letting the pressure, solved the problem that exists among the above-mentioned prior art.
The utility model is realized by the following technical proposal, the yielding anchor cable is provided, which comprises a cable body, an outer sleeve, a nut and a tray which are sleeved on the outer sleeve, and a yielding block which is fixedly connected with one end of the outer sleeve, wherein the tray is positioned at one side of the nut close to the yielding block, and a yielding hole which is communicated along the axial direction is arranged in the yielding block;
the cable body is including being located the section of stepping down of outer sleeve inner chamber, and certainly the section of stepping down extends to wear out the free section in the hole of stepping down lets the external diameter of pressing the section be greater than the hole diameter of stepping down, lets through the toper transition between pressing section and the free section.
This scheme is when using, insert the outer sleeve to the country rock drilling, and nut and tray are located outside the country rock drilling mouth, the free section extends in the country rock drilling, the head of free section adopts behind the resin solid agent end anchor, rotate the nut and exert just anchor power, owing to let the setting of pressing the section, make when rock burst takes place, utilize the guide of toper transition department, let the pressure section progressively extrude in letting the pressure hole and pass, the fracture of the cable body has been avoided, let the pressure hole to let the resistance of pressure section invariable, can realize the constant resistance and let the pressure, can let the length of pressure section through the adjustment, adjust and let the pressure range, need not the reaming during anchor rope installation, construction process is simple.
And optimally, an outer flaring is arranged at one end, facing the yielding section, of the yielding hole. According to the optimization scheme, the outer flaring is arranged, so that the pressure yielding section is conveniently extruded into the pressure yielding hole, and the pressure yielding reliability is improved.
And optimally, an external thread section is arranged on the pressure-yielding block and is in threaded connection with the inner wall of the outer sleeve. According to the optimized scheme, the pressing block is connected with the outer sleeve through the threads, so that the cable body is convenient to assemble, and the manufacturing efficiency of the cable body is improved.
Preferably, the inner cavity of the outer sleeve is filled with an anticorrosive and antirust material, and one end of the outer sleeve, which is far away from the pressure block, is provided with a plug so as to prevent the material in the inner cavity of the outer sleeve from leaking. According to the optimized scheme, the inner cavity of the outer sleeve is filled with the anticorrosive and antirust material, so that the pressure yielding section is prevented from being rusted, the effective service lives of the pressure yielding section and the cable body are prolonged, and the pressure yielding reliability is improved.
As optimization, the mandrel of the yielding section is sleeved with an outer tube, the outer diameter of the outer tube is larger than the diameter of the mandrel of the free section, and a locking ring is fixedly arranged on the cable body, far away from one side of the free section, of the yielding section. This optimization scheme is equipped with the outer tube through the dabber cover in the section of stepping down and realizes stepping down the uplift of section to through the check lock circle with cable body end fixing, avoid the steel strand wires loose, can satisfy the different requirement of stepping down through the outer tube of changing different length, different external diameters, the suitability is good.
As optimization, the diameter of the core shaft of the yielding section is larger than that of the core shaft of the free section, and a locking ring is fixedly arranged on the cable body on one side, away from the free section, of the yielding section. This optimization scheme lets the dabber diameter of pressure section through the increase and realizes letting the increase of pressure section external diameter to through the check lock circle with cable body end fixing, avoid the steel strand wires loose, through changing different length, different external diameters let pressure section dabber can satisfy the difference and let the pressure requirement, application scope is wide.
And optimally, a plurality of diameter expanding bodies distributed along the circumferential direction are arranged between the core shaft of the yielding section and the external steel strand, the outer diameter of a circle where each diameter expanding body is located is larger than the diameter of the core shaft of the free section, and a locking ring is fixedly arranged on the cable body on one side, away from the free section, of the yielding section. According to the optimized scheme, the expanding bodies are arranged on the peripheries of the core shafts of the yielding sections to realize the bulging of the yielding sections, and the outer diameters and the lengths of the yielding sections can be adjusted by replacing the expanding bodies with different diameters and different lengths, so that the yielding amplitude is adjusted.
The utility model has the advantages that: through set up the uplift on the cable body and let the pressure section, when rock burst, through letting the pressure section with let the briquetting cooperation, let the pressure section progressively extrusion deformation through letting the pressure hole, realize the constant resistance and let the pressure, simple to operate lets pressure parameter accessible change and lets the length, the external diameter of pressure section and let the pressure hole size realize the adjustment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of a yielding segment according to an embodiment;
FIG. 3 is a schematic cross-sectional view of a second yielding segment according to an embodiment;
FIG. 4 is a schematic cross-sectional view of a third yielding segment according to an embodiment;
FIG. 5 is a schematic cross-sectional view of a free section;
FIG. 6 is a schematic diagram of a pressure-yielding block;
shown in the figure:
1. the anti-corrosion and anti-rust device comprises a plug, 2, an outer sleeve, 3, a locking ring, 4, a nut, 5, a yielding section, 6, a yielding block, 7, a free section, 8, an anti-corrosion and anti-rust material, 9, a core shaft of the yielding section, 10, an outer pipe, 11, an expanding body, 12, an outer expanding opening, 13, a yielding hole, 14 and a tray.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example one
As shown in fig. 1, the yielding anchor cable comprises a cable body, an outer sleeve 2, a nut 4 and a tray 14 which are sleeved on the outer sleeve, and a yielding block 6 which is fixedly connected to one end of the outer sleeve, wherein the nut is in threaded connection with the outer circle of the outer sleeve, and the tray 14 is located on one side of the nut 4 close to the yielding block 6. And an external thread section is arranged on the pressure yielding block, the external thread section is in threaded connection with the inner wall of the outer sleeve, and a pressure yielding hole 13 which is axially communicated with the outer sleeve is formed in the pressure yielding block.
The cable body includes the dabber and twines in the epaxial steel strand wires of dabber, adopts ordinary steel strand wires or steel strand system of twisting with fingers to process, along axial direction, the cable body is including being located the outer sleeve inner chamber let press section 5 to and from letting press section 5 to extend to wear out and let press the free section 7 of hole 13, the structure of free section adopts the structure of current dabber winding steel strand wires, lets the external diameter of pressing the section be greater than and let press the hole diameter, lets press and pass through the toper transition between section and the free section. For making things convenient for letting the section of pressing to extrude into and let the pressure hole, avoid cable body outer lane steel wire damaged, this embodiment lets the pressure hole orientation let the one end of pressing the section be equipped with outer flaring 12, lets the toper between pressing section and the free segment and outer flaring 12 adaptation, and outer flaring orientation lets the one end of pressing the section for big footpath end.
The inner cavity of outer sleeve is filled with anticorrosive antirust material 8 to avoid letting the pressure section take place the corrosion, and the outer sleeve is kept away from the sealed rigid coupling of the one end of letting the pressure piece and is had end cap 1, in order to avoid anticorrosive antirust material to leak, and for easy to assemble, the end cap of this embodiment passes through threaded connection with the inner wall of outer sleeve.
The dabber 9 of this embodiment let the pressure section is gone up the cover and is equipped with outer tube 10, and the steel strand wires winding is on the outer tube, and outer tube 10 is the tubular metal resonator, and the external diameter of outer tube is greater than the dabber diameter of free section, lets the pressure section keep away from and has set firmly the check lock circle on the cable body of free section one side, through setting up check lock circle 3, prevents the transportation, collides with the impact that causes and scatter. When the cable is manufactured, the steel strand of the cable body is broken, the mandrel is sleeved with the steel pipe which is subjected to heat treatment, then the steel strand is braided again, and one end far away from the free section is shrunk through the locking ring. After the cable body is processed, the yielding block is penetrated, the cable body and the yielding block are subjected to primary pultrusion, and the yielding section of the cable body can be tightly extruded in the yielding block yielding hole. And after the assembly is completed, filling an anticorrosive and antirust material into the outer sleeve, and installing a plug for plugging.
When the anchor is used, the head of the yielding anchor cable is anchored in the drilled hole by using an anchoring agent, and the nut is rotated to apply initial anchoring force. When rock burst occurs, the cable body yielding section is impacted to penetrate through the extrusion block yielding hole, and the steel strand is prevented from being broken. When the yielding amount reaches the maximum, the steel strand does not slide and yield, and is broken after the maximum force is reached. When the diameter of the steel strand is fixed, the constant-resistance yielding pressure is adjusted by adjusting the sizes of the steel pipe and the round steel which are woven in the steel strand and the size of the inner hole of the yielding block.
Example two
The difference between the embodiment and the first embodiment is that the diameter of the mandrel of the yielding section is larger than that of the mandrel of the free section, and the bulging of the yielding section is realized by increasing the diameter of the mandrel of the yielding section. During the preparation, with the broken strand of rope body tip steel strand to cut one section with former mandrel, change for the round steel that the diameter is slightly bigger, then twine the steel strand, and use the locking ring shrink, can adjust the constant resistance through the size of adjustment round steel and let pressure.
EXAMPLE III
The difference between the embodiment and the first embodiment is that a plurality of diameter expanding bodies 11 distributed along the circumferential direction are arranged between a core shaft of the yielding section and an external steel strand, the diameter expanding bodies are round steel, the diameter expanding bodies are sequentially arranged in a tangent mode, the outer diameter of a circle where each diameter expanding body is located is larger than the diameter of the core shaft of the free section, and a locking ring is fixedly arranged on a cable body on one side, away from the free section, of the yielding section. During manufacturing, the steel strand at the end part of the original cable body is broken, the diameter expanding bodies are placed outside the core shaft of the yielding section, then the steel strand is wound again, all the diameter expanding bodies are fixed and are shrunk by using the locking rings, and the constant-resistance yielding pressure can be adjusted by adjusting the size of the diameter expanding bodies.
The utility model discloses simple to operate, locking is reliable, realizes the constant resistance through steel strand wires and tubular metal resonator cooperation extrusion deformation and lets press, lets press the part diameter little, can let according to the on-the-spot condition adjustment and press length. The constant-resistance yielding is applied to a soft rock large-deformation roadway and a rock burst roadway, so that the energy in surrounding rocks is released, and the safety and reliability of roadway support are improved.
Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a let and press anchor rope, includes the cable body, its characterized in that: the nut (4) and the tray (14) are sleeved on the outer sleeve, the pressure yielding block (6) is fixedly connected to one end of the outer sleeve, the tray (14) is located on one side, close to the pressure yielding block (6), of the nut (4), and a pressure yielding hole (13) which penetrates through the pressure yielding block in the axial direction is formed in the pressure yielding block;
the cable body is including being located outer sleeve inner chamber let and press section (5), and certainly let press the section to extend and wear out let free section (7) in pressure hole, let the external diameter of pressing the section be greater than let and press the hole diameter, let and press and pass through the toper transition between section and the free section.
2. A crush anchor according to claim 1, wherein: and an outer flaring (12) is arranged at one end of the yielding hole facing the yielding section.
3. A crush anchor according to claim 1, wherein: the pressure yielding block is provided with an external thread section, and the external thread section is in threaded connection with the inner wall of the outer sleeve.
4. A crush anchor according to claim 1, wherein: the inner cavity of the outer sleeve is filled with an anticorrosive and antirust material (8), and one end of the outer sleeve, which is far away from the yielding block, is fixedly connected with a plug.
5. A crush anchor according to any one of claims 1 to 3, wherein: the mandrel (9) of the yielding section is sleeved with an outer tube (10), the outer diameter of the outer tube is larger than the diameter of the mandrel of the free section, and a locking ring is fixedly arranged on the cable body, far away from one side of the free section, of the yielding section.
6. A crush anchor according to any one of claims 1 to 3, wherein: the diameter of the core shaft of the yielding section is larger than that of the core shaft of the free section, and a locking ring is fixedly arranged on the cable body on one side, far away from the free section, of the yielding section.
7. A crush anchor according to any one of claims 1 to 3, wherein: a plurality of diameter expanding bodies (11) distributed along the circumferential direction are arranged between the core shaft of the yielding section and the external steel strand, the outer diameter of the circle where each diameter expanding body is located is larger than the diameter of the core shaft of the free section, and a locking ring is fixedly arranged on the cable body on one side, away from the free section, of the yielding section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123279278.1U CN216477416U (en) | 2021-12-24 | 2021-12-24 | Yielding anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123279278.1U CN216477416U (en) | 2021-12-24 | 2021-12-24 | Yielding anchor cable |
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| Publication Number | Publication Date |
|---|---|
| CN216477416U true CN216477416U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123279278.1U Active CN216477416U (en) | 2021-12-24 | 2021-12-24 | Yielding anchor cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182765A (en) * | 2022-09-14 | 2022-10-14 | 北京中矿创新联盟能源环境科学研究院 | Slip casting NPR anchor cable |
-
2021
- 2021-12-24 CN CN202123279278.1U patent/CN216477416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182765A (en) * | 2022-09-14 | 2022-10-14 | 北京中矿创新联盟能源环境科学研究院 | Slip casting NPR anchor cable |
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