CN2414194Y - Flexible anchoring-bolt for roadway support - Google Patents
Flexible anchoring-bolt for roadway support Download PDFInfo
- Publication number
- CN2414194Y CN2414194Y CN 00204655 CN00204655U CN2414194Y CN 2414194 Y CN2414194 Y CN 2414194Y CN 00204655 CN00204655 CN 00204655 CN 00204655 U CN00204655 U CN 00204655U CN 2414194 Y CN2414194 Y CN 2414194Y
- Authority
- CN
- China
- Prior art keywords
- rod
- thread bush
- nut
- anchor rod
- bush joint
- 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
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Abstract
The utility model relates to an anchor rod for laneway support and protection. One end of a rod body which is made of a flexible and high-strength steel stranded wire is fixedly inserted and connected with one end of a sheathing head of screw threads, which is provided with an inner hole. The tail end of the rod body is fixedly connected with three to five sleeves at intervals in sequence, and the shapes of the end surfaces of the sleeves are polygonal. A nut which is connected by the screw threads is arranged on the outer circumference on the other end of the sheathing head of the screw threads. A pin is arranged towards a shaft center of the sheathing head of the screw threads along a radial direction of the nut. The anchoring by determining torsional moment can be realized by the anchor rod, and the anchor rod has flexibility and can be bent. If the anchor rod is not perpendicular to a top plate, but is used, additional bending stress is unable to be generated either. The difficult problem that the rigidity anchor rod is unable to be arranged when the length is larger than the height of the laneway is solved particularly. The anchor rod for laneway support and protection also has the advantages of high strength, light weight, low cost, simple operation, etc.
Description
The utility model relates to a kind of anchor pole that is used for the tunnel anchoring support, and the roadway support that is particularly suitable under the coal mine is used.
At present, be used for both at home and abroad that the anchor pole of roadway support mostly is twisted steel anchor rod under the coal mine, though it has as intensity height, simple operation and other advantages, but when anchor pole and back out of plumb, anchor pole tailing screw flight part will produce one than the big additional bending stress more than seven times of tensile stress that anchor pole bore, anchor pole afterbody force-bearing situation is worsened, easier to be destroyed; Also have to be exactly when running into rock-bolt length greater than the situation of head-room, this anchor pole will can't be installed and used because of its rigidity.
In order to overcome above defective, the purpose of this utility model is to provide a kind of roadway support flexible roof bolt, the tunnel anchoring support when taking place to adapt to above-mentioned situation.
Technical solution of the present utility model is: this roadway support flexible roof bolt, comprise the body of rod and the nut that is used for fastening anchor pole, be characterized in fixing the pegging graft of an end of one of the body of rod made by flexible high strength steel strand end and thread bush laced belt endoporus, and the other end excircle of this thread bush joint be provided with nut within the corresponding external screw thread of screw thread; Tail end at the body of rod is fixedly connected with 3-5 cover.
The end face profile of above-mentioned cover is many ribs shape; Be enclosed within total length that body of rod tail end place is provided with distribution and be half of body of rod total length.
The 5-6 that the hole depth within the thread bush joint of the body of rod of being used to peg graft should be body of rod diameter doubly.
The part that the body of rod inserts thread bush joint endoporus is provided with at least three road grooves.
Along nut radially aperture is set to the axle center of coupled thread bush joint, be placed in one with the corresponding pin of this small aperture.
Compared with prior art, the utility model has the advantages that conspicuous.At first, because the body of rod of this anchor pole is flexible steel strand, flexibility is arranged, flexible, be not orthogonal at anchor pole under the condition of back, also can not produce additional bending stress, eliminated the irrationality of anchor pole stress, improve the reliability of bolt support, also solved simultaneously the difficult problem that can't install when former rigidity anchor pole in use runs into rock-bolt length greater than the situation of head-room.Through evidence, under identical tensile strength condition, the weight ratio rigidity anchor pole of the utility model flexible roof bolt is light by about 60%, can save great deal of steel and also therefore reduce cost.In addition, this anchor pole is also because adopted the mode that nut and thread bush joint is linked together by pin, realized the moment of torsion of deciding of anchor pole is installed, it both guaranteed anchor pole in the anchoring process is installed the anchored force that should have, avoided simultaneously detection one by one again, had the anchor rod strength height, operational sequence is simple, installation rate is fast, advantage such as easy to use and safe and reliable the dress anchor pole.
Description of drawings of the present utility model is as follows:
Fig. 1 is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
As shown in Figure 1, this roadway support also has the body of rod 1 with flexible roof bolt and is used for the nut 3 of fastening anchor pole, but be characterized in the body of rod 1 made by flexible high strength steel strand, its end and thread bush joint 2 have fixing the pegging graft of an end of endoporus, and the other end be the body of rod 1 tail end successively fixed interval be connected with 3-5 and overlap 5.The total length that this cover 5 is provided with distribution at the afterbody of the body of rod 1 is half of body of rod total length, and the end face profile of each cover 5 all is many ribs shape, drives anchor pole by jumbolter during in order to anchoring and rotates, and will place the resin cartridge bag of bolthole to stir brokenly and mix.Be provided with on the other end excircle of thread bush joint 2 with nut 3 within the corresponding external screw thread of screw thread, thereby realize thread bush joint 2 being threaded with nut 3.
The 5-6 that the hole depth within the thread bush joint 2 of the body of rod 1 of being used to peg graft should be the body of rod 1 diameter doubly.In order to make the body of rod 1 more firm with the grafting of thread bush joint 2, adopt the part of inserting thread bush joint 2 endoporus at the body of rod 1 that (being at least three roads) groove more than three roads is set, the method plug-in mounting that cooperates with extruding is finished then.
Along nut 3 radially aperture is set to the axle center of coupled thread bush joint 2, be placed in one with the corresponding pin 4 in the aperture of this aperture.This mode that nut 3 and thread bush joint 2 is linked together by pin 4, in the time of can realizing the shearing force that the moment of torsion when anchor pole is installed can bear greater than pin 4 (design of pin should be able to bear 80-100Nm rotating torque) usually, pin is cut off, the expression anchor pole is anchored at together with back, continues to screw the anchoring support that nut 3 has promptly been finished this anchor pole.This shows that what pin 4 was risen is to decide torsional interaction in the utility model anchor pole, it guaranteed anchor pole in the anchoring process is installed the anchored force that should have, avoided detection one by one to the dress anchor pole, also simplified operational sequence, its installation rate is accelerated, and safe and reliable.
Claims (5)
1, a kind of roadway support flexible roof bolt, comprise the body of rod (1) and be used for the nut (3) of fastening anchor pole, it is characterized in that, fixing the pegging graft of one end of one of the body of rod of making by flexible high strength steel strand (1) end and thread bush joint (2) band endoporus, and the other end excircle of this thread bush joint (2) be provided with nut (3) within the corresponding external screw thread of screw thread; Tail end at the body of rod (1) is fixedly connected with 3-5 cover (5).
2, flexible roof bolt as claimed in claim 1 is characterized in that, the end face profile of above-mentioned cover (5) is many ribs shape; Cover (5) is provided with distribution at the body of rod (1) tail end place total length is half of body of rod total length.
3, flexible roof bolt as claimed in claim 1 is characterized in that, the 5-6 that hole depth should be the body of rod (1) diameter within the thread bush joint (2) of the body of rod (1) that is used to peg graft doubly.
4, flexible roof bolt as claimed in claim 1 is characterized in that, the part that the body of rod (1) inserts thread bush joint (2) endoporus is provided with at least three road grooves.
5, flexible roof bolt as claimed in claim 1 is characterized in that, along nut (3) radially aperture is set to the axle center of coupled thread bush joint (2), be placed in one with the corresponding pin of this small aperture (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00204655 CN2414194Y (en) | 2000-03-03 | 2000-03-03 | Flexible anchoring-bolt for roadway support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00204655 CN2414194Y (en) | 2000-03-03 | 2000-03-03 | Flexible anchoring-bolt for roadway support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2414194Y true CN2414194Y (en) | 2001-01-10 |
Family
ID=33572971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00204655 Expired - Fee Related CN2414194Y (en) | 2000-03-03 | 2000-03-03 | Flexible anchoring-bolt for roadway support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2414194Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422488C (en) * | 2004-03-31 | 2008-10-01 | 独立行政法人科学技术振兴机构 | Anchor bolt construction method, and method and device for excavating anchor bolt burying hole |
| CN101839143B (en) * | 2009-12-23 | 2012-08-22 | 中国恩菲工程技术有限公司 | Anchor rod |
| CN101845959B (en) * | 2009-12-23 | 2012-11-14 | 中国恩菲工程技术有限公司 | Anchor rod |
| CN109488355A (en) * | 2019-01-25 | 2019-03-19 | 中国矿业大学 | A kind of construction method of flexible roof bolt |
-
2000
- 2000-03-03 CN CN 00204655 patent/CN2414194Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422488C (en) * | 2004-03-31 | 2008-10-01 | 独立行政法人科学技术振兴机构 | Anchor bolt construction method, and method and device for excavating anchor bolt burying hole |
| CN101839143B (en) * | 2009-12-23 | 2012-08-22 | 中国恩菲工程技术有限公司 | Anchor rod |
| CN101845959B (en) * | 2009-12-23 | 2012-11-14 | 中国恩菲工程技术有限公司 | Anchor rod |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |