CN204200256U - Extrude embedded flexible roof bolt - Google Patents
Extrude embedded flexible roof bolt Download PDFInfo
- Publication number
- CN204200256U CN204200256U CN201420603862.9U CN201420603862U CN204200256U CN 204200256 U CN204200256 U CN 204200256U CN 201420603862 U CN201420603862 U CN 201420603862U CN 204200256 U CN204200256 U CN 204200256U
- Authority
- CN
- China
- Prior art keywords
- anchor
- rod body
- anchor rod
- fastening end
- openend
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses the embedded flexible roof bolt of a kind of extruding, comprise anchor rod body (2), fastening end ground tackle, described fastening end ground tackle is made up of fastening end anchor body (4) and Extruding spring (3), described anchor rod body (2) is made up of steel strand, described fastening end anchor body (4) has an openend (5) and a blind end (6), the inside of described openend (5) is provided with from its end to the accommodation space (7) that blind end (6) extends, the external diameter of described blind end (6) is provided with external screw thread, described accommodation space (7) is by the end squeeze flow of Extruding spring (3) with described anchor rod body (2) one end.Anchor pole deadweight in the utility model is comparatively light, and process is quick, and cost of manufacture is lower, and has stronger tensile strength, can save the maintenance cost in tunnel simultaneously.
Description
Technical field
The utility model relates to anchor pole, specifically a kind of flexible roof bolt.
Background technology
Anchor rod device is the necessary devices of down-hole support engineering construction, is widely used in mine laneway and underground engineering wall rock supporting, can ensure the stable of mine laneway and underground engineering wall rock.Its critical piece comprises anchored end, fastening end anchor body and anchor rod body etc.; Its scope of application widely, can realize end anchor, lengthen anchor and full anchor; Because of advantages such as it have easy and simple to handle, cheap, be widely used in all kinds of roadway support engineerings such as colliery, railway, water power.
Anchor rod body material many employings screw-thread steel processing of existing anchor rod device, its supporting ground tackle also adopts the structure design coordinated with it.This anchor pole not only deadweight itself is heavier, the tensile strength of single anchor rod is lower, holistic cost is also higher, when anchor bolt construction, construction party to be ranked anchor bolt construction drill hole density according to single bar tensile strength, single anchor rod tensile strength is larger, and anchor bolt construction drill hole density is lower, construction cost and labor strength lower.
More existing employing steel strand are as the anchor pole of anchor rod body, it can expose one section of longer steel strand in fastening end usually, the space that tunnel is more can be taken, thus the net sectional area in tunnel can be made to diminish, because coal mine roadway is in the end, ground, in rock stratum sedimentation, under squeezing action, tunnel section area can reduce gradually, if complete in making tunnel net sectional area reduce further due to a large amount of anchor pole, the roadway repair time cycle will be made to become frequent, thus the repetition construction times needed for maintenance tunnel is increased, waste of manpower and material resources, and make the maintenance cost adding tunnel, in addition, the process of the fastening end of this anchor pole is also comparatively loaded down with trivial details.
Summary of the invention
For above-mentioned prior art Problems existing, the utility model provides a kind of extruding embedded flexible roof bolt, the deadweight of this anchor pole is lighter, the tensile strength of anchor pole is large, cost of manufacture is lower, and the use of this anchor pole can reduce the maintenance times in tunnel effectively, can save the maintenance cost in tunnel, meanwhile, the process needed for this anchor pole is comparatively simple and direct.
To achieve these goals, the utility model provides a kind of extruding embedded flexible roof bolt, comprise anchor rod body, fastening end ground tackle, described fastening end ground tackle is made up of fastening end anchor body and Extruding spring, described anchor rod body is made up of steel strand, described fastening end anchor body has an openend and a blind end, the inside of described openend is provided with from its end to the accommodation space that blind end extends, the external diameter of described blind end is provided with external screw thread, and described accommodation space is by the end squeeze flow of Extruding spring and described anchor rod body one end.
In this technical scheme, by making anchor rod body be made up of steel strand, not only can alleviate the overall weight of anchor pole, can also cost of manufacture be reduced, and can be convenient to apply larger pretightning force to improve the tensile strength of anchor pole entirety; By at fastening end employing fastening end ground tackle and steel strand squeeze flow, the length that this anchor pole can be made to expose in tunnel is shorter, so just effectively can reduce the maintenance times in tunnel, a large amount of man power and materials can be saved, and then save a large amount of maintenance costs; By making accommodation space on Mao Ti openend, fastening end by Extruding spring and anchor rod body squeeze flow, the bonding strength of anchor rod body and fastening end anchor body can be ensured; By making the external diameter of the blind end on the anchor body of fastening end be provided with external screw thread, can so that apply pretightning force, to improve the tensile strength of anchor pole to this anchor pole; An openend with accommodation space and one is provided with externally threaded blind end by making fastening end anchor body, the process of this anchor pole can be simplified, one end of anchor rod body is penetrated in the Extruding spring endoporus in accommodation space, pressurizeed by the outside, openend of the equipment of exerting pressure to fastening end anchor body, just complete anchor rod body to be fixedly connected with fastening end anchor body, in this process, the openend external surface of fastening end anchor body can be out of shape, and its external surface with externally threaded blind end can not deform, this completes the processing of anchor pole.
Further, also comprise anchored end, described anchor rod body is fixedly connected with anchored end away from one end of fastening end ground tackle.
In this technical scheme, by the setting of anchored end, can prevent the end of the anchor rod body be made up of steel strand from occurring loose and affecting the normal use of anchor pole.
Further, described anchored end is the suitable steel bushing of the external diameter of internal diameter and anchor rod body, and described anchored end is sleeved on the end of anchor rod body.
In this technical scheme, by making anchored end be the suitable steel bushing of the external diameter of internal diameter and anchor rod body, can so that the connection of anchored end and anchor rod body.
Further, the length of described Extruding spring and described accommodation space suitable.
In this technical scheme, by make the length of Extruding spring and described accommodation space suitable, anchor rod body and fastening end anchor body can be made to have more firmly bonding strength, thus this anchor pole can be made to have better tensile strength.
Further, the outside dimension of the openend of described fastening end anchor body is greater than the outside dimension of its blind end.
In this technical scheme, by the outside dimension making the outside dimension of openend be greater than blind end, can when not changing blind end outside dimension, just the size of anchor rod body can be increased by the external diameter increasing openend, so just can improve the tensile strength of this anchor pole further, blind end outside dimension is constant, and model and the specification of the equipment of the applying pretightning force be connected with its external screw thread also would not change, thus can save installation cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, anchored end, 2, anchor rod body, 3, Extruding spring, 4, fastening end anchor body, 5, openend, 6, blind end, 7, accommodation space.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the embedded flexible roof bolt of a kind of extruding, comprise anchor rod body 2, fastening end ground tackle, described fastening end ground tackle is made up of fastening end anchor body 4 and Extruding spring 3, described anchor rod body 2 is made up of steel strand, described fastening end anchor body 4 has an openend 5 and a blind end 6, the inside of described openend 5 is provided with from its end to the accommodation space 7 that blind end 6 extends, the external diameter of described blind end 6 is provided with external screw thread, and described accommodation space 7 is by the end squeeze flow of Extruding spring 3 with described anchor rod body 2 one end.By making anchor rod body 2 be made up of steel strand, not only can alleviate the overall weight of anchor pole, can also cost of manufacture be reduced, and can be convenient to apply larger pretightning force to improve the tensile strength of anchor pole entirety, by at employing fastening end, fastening end ground tackle and anchor rod body 2 squeeze flow to be made up of steel strand, the length that this anchor pole can be made to expose in tunnel is shorter, so just effectively can reduce the maintenance times in tunnel, a large amount of man power and materials can be saved, and then save a large amount of maintenance costs, by making accommodation space 7 on anchor body 4 openend, fastening end 5 by Extruding spring 3 and anchor rod body 2 squeeze flow, the bonding strength of anchor rod body 2 and fastening end anchor body 4 can be ensured, by making the external diameter of the blind end 6 on fastening end anchor body 4 be provided with external screw thread, can so that apply pretightning force, to improve the tensile strength of anchor pole to this anchor pole, an openend 5 with accommodation space 7 and one is provided with externally threaded blind end 6 by making fastening end anchor body 4, the process of this anchor pole can be simplified, one end of anchor rod body 2 is penetrated in the endoporus of the Extruding spring 3 in accommodation space 7, pressurizeed by the outside, openend 5 of the equipment of exerting pressure to fastening end anchor body 4, just complete anchor rod body 2 to be fixedly connected with fastening end anchor body 4, in this process, openend 5 external surface of fastening end anchor body 4 can be out of shape, and its external surface with externally threaded blind end 6 can not deform, this completes the processing of anchor pole, and its whole external surface can not be caused because of the pressurization to fastening end anchor body 4 and all can deform, for the situation that whole external surface is out of shape, also need the advanced row lathe process of the external diameter of fastening end anchor body 4, then could go out apply in its Surface Machining the external screw thread of pretightning force.
Also comprise anchored end 1, described anchor rod body 2 is fixedly connected with anchored end 1 away from one end of fastening end ground tackle.By the setting of anchored end, can prevent the end of the anchor rod body 2 be made up of steel strand from occurring loose and affecting the normal use of anchor pole.
Described anchored end 1 is the suitable steel bushing of the external diameter of internal diameter and anchor rod body 2, and described anchored end 1 is sleeved on the end of anchor rod body 2.By making anchored end 1 be the suitable steel bushing of the external diameter of internal diameter and anchor rod body 2, can so that the connection of anchored end 1 and anchor rod body 2.
Length and the described accommodation space 7 of described Extruding spring 3 are suitable.By make the length of Extruding spring 3 and described accommodation space 7 suitable, anchor rod body 2 and fastening end anchor body 4 can be made to have more firmly bonding strength, thus this anchor pole can be made to have better tensile strength.
The outside dimension of the openend of described fastening end anchor body 4 is greater than the outside dimension of its blind end.By the outside dimension making the outside dimension of openend 5 be greater than blind end 6, can when not changing blind end 6 outside dimension, just the outside dimension of anchor rod body 2 can be increased by the external diameter increasing openend 5, so just can improve the tensile strength of this anchor pole further, blind end 6 outside dimension is constant, model and the specification of the equipment of the applying pretightning force be connected with its external screw thread also would not change, thus can save installation cost.
Claims (5)
1. the embedded flexible roof bolt of extruding, comprise anchor rod body (2), fastening end ground tackle, described fastening end ground tackle is made up of fastening end anchor body (4) and Extruding spring (3), described anchor rod body (2) is made up of steel strand, it is characterized in that, described fastening end anchor body (4) has an openend (5) and a blind end (6), the inside of described openend (5) is provided with from its end to the accommodation space (7) that blind end (6) extends, the external diameter of described blind end (6) is provided with external screw thread, described accommodation space (7) is by the end squeeze flow of Extruding spring (3) with described anchor rod body (2) one end.
2. the embedded flexible roof bolt of one extruding according to claim 1, it is characterized in that, also comprise anchored end (1), described anchor rod body (2) is fixedly connected with anchored end (1) away from one end of fastening end ground tackle.
3. the embedded flexible roof bolt of one extruding according to claim 2, it is characterized in that, the steel bushing that the external diameter that described anchored end (1) is internal diameter and anchor rod body (2) is suitable, described anchored end (1) is sleeved on the end of anchor rod body (2).
4. the one according to any one of claims 1 to 3 extrudes embedded flexible roof bolt, it is characterized in that, length and the described accommodation space (7) of described Extruding spring (3) are suitable.
5. the one according to any one of claims 1 to 3 extrudes embedded flexible roof bolt, it is characterized in that, the outside dimension of the openend of described fastening end anchor body (4) is greater than the outside dimension of its blind end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603862.9U CN204200256U (en) | 2014-10-17 | 2014-10-17 | Extrude embedded flexible roof bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603862.9U CN204200256U (en) | 2014-10-17 | 2014-10-17 | Extrude embedded flexible roof bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200256U true CN204200256U (en) | 2015-03-11 |
Family
ID=52658223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420603862.9U Expired - Fee Related CN204200256U (en) | 2014-10-17 | 2014-10-17 | Extrude embedded flexible roof bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204200256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470907A (en) * | 2015-12-04 | 2016-04-06 | 国家电网公司 | Power cable intermediate connector |
| CN109488355A (en) * | 2019-01-25 | 2019-03-19 | 中国矿业大学 | A kind of construction method of flexible roof bolt |
-
2014
- 2014-10-17 CN CN201420603862.9U patent/CN204200256U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470907A (en) * | 2015-12-04 | 2016-04-06 | 国家电网公司 | Power cable intermediate connector |
| CN109488355A (en) * | 2019-01-25 | 2019-03-19 | 中国矿业大学 | A kind of construction method of flexible roof bolt |
| CN109488355B (en) * | 2019-01-25 | 2019-09-03 | 中国矿业大学 | A kind of construction method of flexible roof bolt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107288671B (en) | Construction method of soft crushed coal rock mass drilling, sealing and injecting integrated extendable anchor rod | |
| CN204716136U (en) | A kind of Anchor rod base-enlarging drill bit | |
| CN103741687B (en) | Reaming pressure dispersion type anchor rod | |
| CN204200256U (en) | Extrude embedded flexible roof bolt | |
| CN104653208A (en) | Simple micro-added resistance large-deformation anchorage device and method | |
| CN202520346U (en) | Novel high-intensity constant-resistance large-deformation anchor rod | |
| AU2017100938A4 (en) | High load-bearing type ground screw | |
| CN206539359U (en) | A kind of umbrella-type grouted anchor bar | |
| CN204140107U (en) | A kind of high anchored force recoverable anchor rod | |
| CN204113316U (en) | A kind of interval screw rod body formula large deformation anchor rod | |
| CN203939513U (en) | Glass fibre reinforced plastics rockbolts supporting and protection structure and glass fibre reinforced plastics rockbolts | |
| CN203452735U (en) | Drilling machine carriage pressing column anti-toppling device | |
| CN202900298U (en) | Anchor rod | |
| CN204827496U (en) | Recoverable anchor rod | |
| CN201496086U (en) | Pipe sleeve type recoverable anchor rod | |
| CN204041085U (en) | Filling type allows presses constant-resistance anchor pole | |
| CN204666053U (en) | A kind of explosion airspace device | |
| CN204172905U (en) | Multistage lifting formula mining cable car | |
| CN204358180U (en) | A kind of anchor pole check valve assembly | |
| CN204152532U (en) | Anchor rod drawing device | |
| CN201687412U (en) | Novel bidirectional variable diameter connector | |
| CN105863696A (en) | Corrugated anchored rod device high in strength and large in deformation | |
| CN206376889U (en) | A kind of new scale formula grouted anchor bar | |
| CN203239370U (en) | Hard roof dislocation anti-shearing reinforced anchor rod | |
| CN202520345U (en) | High-strength constant resistance extending device for anchor cable |
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: 20150311 Termination date: 20171017 |