CN204419216U - A kind of Collapsible hollow grouting anchor - Google Patents
A kind of Collapsible hollow grouting anchor Download PDFInfo
- Publication number
- CN204419216U CN204419216U CN201420850069.9U CN201420850069U CN204419216U CN 204419216 U CN204419216 U CN 204419216U CN 201420850069 U CN201420850069 U CN 201420850069U CN 204419216 U CN204419216 U CN 204419216U
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- section
- grouting anchor
- permanent anchorage
- detachable
- hollow grouting
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Abstract
The utility model relates to geotechnical engineering supporting and protection structure field, disclose a kind of Collapsible hollow grouting anchor, comprise detachable section, permanent anchorage section, nut, backing plate, stop grouting plug, half cone-shaped is protruding, described nut, backing plate and stop grouting plug are arranged on the detachable section end of hollow grouting anchor, described hollow grouting anchor permanent anchorage segment trailer is provided with half cone-shaped projection, the half cone-shaped projection of different protrusion direction is crisscross arranged, the uplift resistance of anchor pole can be increased, projection makes half cone-shaped, after can ensureing to prevent reclaiming detachable section, the anchored force of anchor pole permanent anchorage section, and, in the utility model, detachable connected mode between section with permanent anchorage section is for being threaded, simple to operate, easy construction, be convenient to the recovery of detachable section simultaneously.
Description
Technical field
The utility model relates to geotechnical engineering supporting and protection structure field, particularly relates to a kind of Collapsible hollow grouting anchor.
Background technology
In the domain engineering processs of construction such as tunnel, water conservancy, mine working, anchor pole becomes most widely used support apparatus.Hollow grouting anchor is a kind of conventional supporting tool, buried underground in the earth formation, stratum can be chained together tightly, the interaction of---injecting cement paste---hole wall rock mass power of passing through anchor pole, transfer and improve self-strength and the self-stable ability of Rock And Soil, improve by the stress state of anchoring Rock And Soil to make it stable, thus reduce the deflection in tunnel.
But, major part anchor pole is the total length supporting or the reinforcing aspect that are used in stratum or works, namely an anchor pole total length all plays the effect of supporting power, and disengaging section parts just can not realize mass action as excision exterior portion anchor bar body or weaken its effect or cause anchor pole not reuse causing waste.In Practical Project, some engineering stage by stage or will be implemented step by step and just can complete, therefore only needs a part of anchor pole to need to play long term, and remaining then can reclaim.
Existing detachable anchor pole, because permanent anchorage section is rotary body cross section, when reclaiming, rotate anchor bar body, permanent anchorage section can be made to rotate, and then affect the anchored force of permanent anchorage section, therefore just need to develop one simple to operate, the detachable anchor of easy construction, and will ensure, the anchored force of anchor pole permanent anchorage part is not affected when recovery section anchor pole.
Summary of the invention
Can impact permanent anchorage section anchored force when recycling to overcome existing detachable anchor, the weak points such as constructing operation is complicated, the utility model provides a kind of Collapsible hollow grouting anchor.
The utility model solves the technical scheme that its technical problem adopts:
A kind of Collapsible hollow grouting anchor, comprise detachable section (1), permanent anchorage section (2), nut (3), backing plate (4), stop grouting plug (5), half cone-shaped projection (7), described nut (3), backing plate (4) and stop grouting plug (5) are arranged on the detachable section of hollow grouting anchor (1) end, connected mode between the detachable section of described hollow grouting anchor (1) with permanent anchorage section (2) is for being threaded, concrete mode is, internal thread is done at detachable section (1) place, external screw thread is done at permanent anchorage section (2) place, the connection between detachable section (1) and permanent anchorage section (2) is realized by two place's screw threads,
As preferably, the cylinder that the detachable section of described hollow grouting anchor (1) is hollow, wherein the part of hollow is slip casting passage, the free end of the detachable section of hollow grouting anchor (1) is provided with stop grouting plug (5), backing plate (4), nut (3) successively, the other end of detachable section (1), namely does internal thread process with permanent anchorage section (2) junction;
As preferably, described hollow grouting anchor permanent anchorage section (2) shank portion is the cylinder of hollow, wherein the part of hollow is also as slip casting passage, the afterbody of permanent anchorage section (2) is provided with half cone-shaped projection (7), the left and right cross-sectional sizes of half cone-shaped projection (7) is different, wherein left side cross-sectional, namely the side towards detachable section (1) and permanent anchorage section (2) connecting portion is semi-circular cross-section, this lateral section diameter is larger, the right section of half cone-shaped projection (7), namely the cross section towards anchor pole afterbody is circular cross-section, this lateral section diameter is less, equal the diameter of anchor bar body, the other end of permanent anchorage section (2), namely does external screw thread process with detachable section (1) junction,
As preferably, the detachable section of described hollow grouting anchor (1) is provided with a steam vent (6), permanent anchorage section (2) is provided with two steam vents (6), and these two steam vents lay respectively on the body of rod at two half cone-shaped projection (7) places;
As preferably, described hollow grouting anchor permanent anchorage section (2) afterbody, with hollow grouting anchor axis for center line, the direction difference that half cone-shaped projection (7) is protruding, oriented paper inner process, oriented outer lug of facing directly, these two kinds protruding half cone-shaped projections (7) are crisscross arranged;
As preferably, after being threaded connection between the detachable section of described hollow grouting anchor (1) and permanent anchorage section (2), there is a columniform hollow channel, for reperfusion reinforcement slurries in whole anchor pole inside;
The beneficial effects of the utility model are:
(1) a kind of Collapsible hollow grouting anchor of the present utility model, the afterbody of permanent anchorage section is provided with half cone-shaped projection, and the half cone-shaped projection of different protrusion direction is crisscross arranged, can ensure that permanent anchorage section is just in time in boring centre position, thus the uniformity of injecting cement paste around guarantee anchor pole, and the protruding contact area that can increase between anchor bar body and injecting cement paste of half cone-shaped is set, after injecting cement paste sclerosis, the uplift resistance of anchor pole can be increased, anchor pole is prevented to be pulled out, in addition, projection makes half cone-shaped, but not it is conical, can prevent when reclaiming detachable section, the anchored force of permanent anchorage section is affected due to rotation,
(2) a kind of Collapsible hollow grouting anchor of the present utility model, be threaded connection between the detachable section of anchor pole and permanent anchorage section, easy assembly and disassembly, can arbitrarily combine at the construction field (site) as required, facilitate site operation, and the recovery of recyclable section of hollow grouting anchor can be realized, efficiently solving hollow grouting anchor can not the problem of recycling.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further details:
Fig. 1 is the structural representation of the detachable hollow grouting anchor of the utility model;
Fig. 2 is the utility model A-A sectional schematic diagram;
Fig. 3 is the utility model B-B sectional schematic diagram;
Signal number in the figure: detachable section-1, permanent anchorage section-2, nut-3, backing plate-4, stop grouting plug-5, steam vent-6, half cone-shaped protruding-7.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail:
A kind of Collapsible hollow grouting anchor, comprise detachable section (1), permanent anchorage section (2), nut (3), backing plate (4), stop grouting plug (5), half cone-shaped projection (7), described nut (3), backing plate (4) and stop grouting plug (5) are arranged on the detachable section of hollow grouting anchor (1) end, connected mode between the detachable section of described hollow grouting anchor (1) with permanent anchorage section (2) is for being threaded, concrete mode is, internal thread is done at detachable section (1) place, external screw thread is done at permanent anchorage section (2) place, the connection between detachable section (1) and permanent anchorage section (2) is realized by two place's screw threads,
As preferably, the cylinder that the detachable section of described hollow grouting anchor (1) is hollow, wherein the part of hollow is slip casting passage, the free end of the detachable section of hollow grouting anchor (1) does external screw thread process, be provided with stop grouting plug (5), backing plate (4), nut (3) successively, the other end of detachable section (1), namely does internal thread process with permanent anchorage section (2) junction;
As preferably, described hollow grouting anchor permanent anchorage section (2) shank portion is the cylinder of hollow, wherein the part of hollow is also as slip casting passage, the afterbody of permanent anchorage section (2) is provided with half cone-shaped projection (7), the left and right cross-sectional sizes of half cone-shaped projection (7) is different, wherein left side cross-sectional, namely the side towards detachable section (1) and permanent anchorage section (2) connecting portion is semi-circular cross-section, this lateral section diameter is larger, the right section of half cone-shaped projection (7), namely the cross section towards anchor pole afterbody is circular cross-section, this lateral section diameter is less, equal the diameter of anchor bar body, the other end of permanent anchorage section (2), namely does external screw thread process with detachable section (1) junction,
As preferably, the detachable section of described hollow grouting anchor (1) is provided with a steam vent (6), permanent anchorage section (2) is provided with two steam vents (6), and these two steam vents lay respectively on the body of rod at two half cone-shaped projection (7) places;
As preferably, described hollow grouting anchor permanent anchorage section (2) afterbody, with hollow grouting anchor axis for center line, the direction difference that half cone-shaped projection (7) is protruding, shown in Figure of description (Fig. 1), oriented paper inner process, oriented outer lug of facing directly, these two kinds protruding half cone-shaped projections (7) are crisscross arranged;
As preferably, after being threaded connection between the detachable section of described hollow grouting anchor (1) and permanent anchorage section (2), there is a columniform hollow channel, for reperfusion reinforcement slurries in whole anchor pole inside;
By reference to the accompanying drawings the course of work of the present utility model is described:
As shown in Figure 1, in the present embodiment, a kind of Collapsible hollow grouting anchor of design, in use, is threaded connection into as a whole by detachable section with permanent anchorage section, after clear hole, anchor pole is put into boring, is injected by injected hole and reinforce slurries, until injecting cement paste sclerosis post tensioning anchor pole, and fastening nut (3), thus complete preliminary bracing task; Along with the increase of bolt support time, tunnel or chamber top shoulder bed effects are increasing gradually being obtained the stress on country rock by bolt support, power suffered by anchor pole is also increasing gradually, after injecting cement paste reaches consolidation length of time, permanent anchorage section and peripheral rock are omnidistance to bond, and compressive stress is passed to periphery bottom, therefore nut (3) can be turned on successively, take off backing plate (4), rotate detachable section (1), thus complete the recovery of detachable section (1).
In the present embodiment, between the detachable section of hollow grouting anchor (1) and permanent anchorage section (2), junction screw thread process, is convenient to Footwall drift resource, meets the principle of green, sustainable development.
In the present embodiment, by half cone-shaped projection (7), and the half cone-shaped projection (7) of different protrusion direction is crisscross arranged, can ensure that permanent anchorage section is just in time in boring centre position, thus the uniformity of injecting cement paste around guarantee anchor pole, and half cone-shaped projection (7) is set and can increases contact area between anchor bar body and injecting cement paste, increase the uplift resistance of anchor pole, in addition, projection makes half cone-shaped, after can ensureing to prevent reclaiming detachable section (1), the anchored force of anchor pole permanent anchorage section (2).
Above-described embodiment is only better embodiment of the present utility model; specifically understand technical conceive of the present utility model and essential implementation by reference to the accompanying drawings; not protection domain of the present utility model is limited; change, the modification done under all Spirit Essences according to technical solutions of the utility model and principle, substitute, combination, to simplify; all should be the substitute mode of equivalence, all should be encompassed within protection domain of the present utility model.
Claims (6)
1. a Collapsible hollow grouting anchor, comprise detachable section (1), permanent anchorage section (2), nut (3), backing plate (4), stop grouting plug (5), half cone-shaped projection (7), described nut (3), backing plate (4) and stop grouting plug (5) are arranged on the detachable section of hollow grouting anchor (1) end, connected mode between the detachable section of described hollow grouting anchor (1) with permanent anchorage section (2) is for being threaded, concrete mode is, internal thread is done at detachable section (1) place, external screw thread is done at permanent anchorage section (2) place, the connection between detachable section (1) and permanent anchorage section (2) is realized by two place's screw threads.
2. a kind of Collapsible hollow grouting anchor according to claim 1, it is characterized in that: the cylinder that the detachable section of described hollow grouting anchor (1) is hollow, wherein the part of hollow is slip casting passage, the free end of the detachable section of hollow grouting anchor (1) is provided with stop grouting plug (5), backing plate (4), nut (3) successively, the other end of detachable section (1), namely does internal thread process with permanent anchorage section (2) junction.
3. a kind of Collapsible hollow grouting anchor according to claim 1, it is characterized in that: described hollow grouting anchor permanent anchorage section (2) shank portion is the cylinder of hollow, wherein the part of hollow is also as slip casting passage, the afterbody of permanent anchorage section (2) is provided with half cone-shaped projection (7), the left and right cross-sectional sizes of half cone-shaped projection (7) is different, wherein left side cross-sectional, namely the side towards detachable section (1) and permanent anchorage section (2) connecting portion is semi-circular cross-section, this lateral section diameter is larger, the right section of half cone-shaped projection (7), namely the cross section towards anchor pole afterbody is circular cross-section, this lateral section diameter is less, equal the diameter of anchor bar body, the other end of permanent anchorage section (2), namely does external screw thread process with detachable section (1) junction.
4. a kind of Collapsible hollow grouting anchor according to claim 1, it is characterized in that: the detachable section of described hollow grouting anchor (1) is provided with a steam vent (6), permanent anchorage section (2) is provided with two steam vents (6), and these two steam vents lay respectively on the body of rod at two half cone-shaped projection (7) places.
5. a kind of Collapsible hollow grouting anchor according to claim 1, it is characterized in that: described hollow grouting anchor permanent anchorage section (2) afterbody, with hollow grouting anchor axis for center line, the direction difference that half cone-shaped projection (7) is protruding, oriented paper inner process, oriented outer lug of facing directly, these two kinds protruding half cone-shaped projections (7) are crisscross arranged.
6. a kind of Collapsible hollow grouting anchor according to claim 1, it is characterized in that: after being threaded connection between the detachable section of described hollow grouting anchor (1) and permanent anchorage section (2), a columniform hollow channel is had, for reperfusion reinforcement slurries in whole anchor pole inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850069.9U CN204419216U (en) | 2014-12-26 | 2014-12-26 | A kind of Collapsible hollow grouting anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850069.9U CN204419216U (en) | 2014-12-26 | 2014-12-26 | A kind of Collapsible hollow grouting anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419216U true CN204419216U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420850069.9U Expired - Fee Related CN204419216U (en) | 2014-12-26 | 2014-12-26 | A kind of Collapsible hollow grouting anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204419216U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332374A (en) * | 2015-10-30 | 2016-02-17 | 成都科创佳思科技有限公司 | Rock and soil anchoring structure |
| CN109236337A (en) * | 2018-09-26 | 2019-01-18 | 中南大学 | The arrow anchor pole and its application method of multisection type clamping slip casting anchoring |
| CN109989776A (en) * | 2019-03-12 | 2019-07-09 | 杭州钜力锚杆科技有限公司 | A kind of connector for recoverable anchor pole |
| CN113366233A (en) * | 2019-01-28 | 2021-09-07 | 贝瓦克生产机械有限公司 | Quick-change split shaft |
-
2014
- 2014-12-26 CN CN201420850069.9U patent/CN204419216U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332374A (en) * | 2015-10-30 | 2016-02-17 | 成都科创佳思科技有限公司 | Rock and soil anchoring structure |
| CN109236337A (en) * | 2018-09-26 | 2019-01-18 | 中南大学 | The arrow anchor pole and its application method of multisection type clamping slip casting anchoring |
| CN109236337B (en) * | 2018-09-26 | 2020-08-11 | 中南大学 | Arrow anchor rod anchored by multi-section type clamping grouting and using method thereof |
| CN113366233A (en) * | 2019-01-28 | 2021-09-07 | 贝瓦克生产机械有限公司 | Quick-change split shaft |
| US12092155B2 (en) | 2019-01-28 | 2024-09-17 | Belvac Production Machinery, Inc. | Quick-change split shaft |
| CN109989776A (en) * | 2019-03-12 | 2019-07-09 | 杭州钜力锚杆科技有限公司 | A kind of connector for recoverable anchor pole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20161226 |