CN206503612U - It is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole - Google Patents
It is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole Download PDFInfo
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- CN206503612U CN206503612U CN201621284539.5U CN201621284539U CN206503612U CN 206503612 U CN206503612 U CN 206503612U CN 201621284539 U CN201621284539 U CN 201621284539U CN 206503612 U CN206503612 U CN 206503612U
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- rod
- anchor
- afterbody
- boring
- extensible
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Abstract
It is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole, it is adaptable to roadway weakness coal and rock support engineering.Anchor rod body is divided into simple drill bit, the middle body of rod, branch sleeve, the afterbody body of rod, the part of conical rubber plug five.The 1/4~3/4 of rod boring drilling depth is first used when using, crept into further according to assembling anchor pole is needed, when assembling the spreading final stage body of rod, middle body of rod spreading is replaced with the afterbody body of rod, bore coal petrography powder certainly by anchor pole and drilling rapid desufflation deformation friction forms anchor force realization from anchor function, pretension is carried out afterwards.It is realized bores from anchor certainly；Drill reduces construction volume for semi-automatic pore-forming mode, both shortened the single anchor rod engineering time, it is to avoid because collapse hole and caused by give up hole；Anchor rod body is the multistage extensible body of rod, can adjust body of rod total length at any time according to live needs；Without using powder stick, compensate for the powder stick caused by collapse hole can not fill in the deficiency with powder stick anchor difference in weak coal and rock.
Description
Technical field
The utility model is related to a kind of novel anchor rod, and what especially a kind of underground coal mine was used is suitable for oneself of weak coal petrography
Bore from anchor extensible anchor pole.
Background technology
Suspension roof support is the major way of heading supporting, can significantly improve the stress state of roadway surrounding rock, improve branch
Protect effect, reduction support cost, mitigate labor strength, effective guarantee is provided for safe coal production.Conventional anchor is
Screw-thread steel reinforcing bar equipped with nut pallet；Then anchoring process extracts drilling rod out, is sequentially placed into resin first to get pore-forming with drilling rod
Anchor Agent, anchor rod body, produce anchor force with anchor rod stirring resin anchoring agent, then carry out pretension.
There are problems in conventional anchor, particularly in weak coal and rock in itself.It is described below：1. drilling need to be used additionally
Drilling rod is punched, and must be extracted out after drilling, and resin anchoring agent, anchor rod body are then put into successively, and step is more, loses time；2. anchor
Club shaft is the single section of rigid body of rod, and length is limited, body of rod length is often no more than drift section maximum gauge by heading sizes
Design requirement is not reached；3. in weak coal and rock, resin anchoring agent is poor for the coal and rock adhesion of loose crushing, causes to stick
Anchor-hold is not enough；4. weak coal and rock drilling contraction distortion is rapid, and resin anchoring agent, the body of rod easily occur can not fill in, and causes useless hole.
These problems seriously constrain application of the bolt support technology in weak coal petrography supporting.
Various new anchor pole is had been developed that now, including is bored certainly from anchor anchor pole and spreading anchor pole.But existing these are new
Anchor pole, does not possess spreading function from boring from anchor anchor pole, and either spreading anchor pole is without uncomfortable from anchor function or its anchorage style from boring
For weak coal and rock.Needing badly a kind of can overcome the novel anchor rod and anchoring process of above mentioned problem completely.
The content of the invention
Technical problem：For above-mentioned technical problem, propose it is a kind of may be implemented in weak coal petrography from boring from anchor, without using
Anchor Agent, and can unrestricted spreading, have concurrently can lag grouting advantage be suitable for weak coal petrography from bore can from anchor
Spreading anchor pole.
Technical scheme：It is of the present utility model to be suitable for being connect from anchor from brill for weak coal petrography to realize above-mentioned technical purpose
Long anchor pole, it is characterised in that：It includes simple drill bit, the combination body of rod and fastener；The combination body of rod head passes through drill bit
Internal thread is connected with simple drill bit, combination the body of rod include the branched middle body of rod, multiple branch sleeves and the afterbody body of rod, it is branched in
Between the body of rod be integrally connected by multiple branch sleeves, the afterbody of the body of rod passes through branch sleeve and connects afterbody bar in the middle of last branch
Body, the fastener is threadedly attached on the afterbody body of rod, and the fastener includes order and is located on the afterbody body of rod
Conical rubber plug, pallet and nut.
The middle body of rod head is provided with connection external screw thread, and tail end is provided with composite-joint, and the composite-joint is outer for connection
Screw thread and six rib joints are constituted, and the afterbody body of rod sets connection external screw thread except head, and tail end is provided with fastening thread；In
Between the body of rod and the afterbody body of rod surface be regular screw threads steel screw thread, it is axially hollow be provided with injected hole；Up and down the two of the middle body of rod
End connection external thread length is 10mm~150mm, and six rib joint lengths are 1080mm, and fastening thread length is 30mm~150mm,
Afterbody body of rod length is 400mm~3500mm.
Provided with connection internal thread match with intermediate bar body phase in the branch sleeve, branch sleeve length for 40mm~
160mm, the 105%~130% of a diameter of middle shank diameter of branch sleeve, the conical rubber plug inner side is provided with increase and tail
The rubber stopper internal thread of portion's body of rod frictional force.The bit diameter of small punching construction exceedes straight from anchor extensible anchor rod body from boring
Footpath 1mm~10mm.
Beneficial effect：The application employs above-mentioned technical proposal and had the following advantages that compared with prior art：
A. the actual grade requirement just drilled using branch sleeve and the middle body of rod is combined expansion, can be according to live need
Will, body of rod total length is adjusted at any time so as to be adapted to the drilling of any depth, and the flexibility of practical operation is strong, and junction is close, leads to
Cross function of the simple drill bit realization for being arranged on head from brill from anchor；
B. drilling unites two into one construction drill and installation two processes of anchor pole, both shortened for half from drilled as holes mode
Single anchor rod construction time, and without having to worry about because collapse hole and caused by give up hole, save the engineering time, improve efficiency of construction；
C. without using powder stick, by coal petrography powder and drilling rapid desufflation deformable squeeze friction lever body formation anchor force, anchoring
Effect is good, and compensate for the powder stick caused by collapse hole can not fill in the shortcoming with powder stick anchor difference in weak coal and rock.
D. construction novel anchor rod process is crept into for side, side spreading so that anchor pole final lengths are not restricted by tunnel diameter.
Brief description of the drawings
Fig. 1 is anchor pole assembling schematic diagram of the present utility model.
Fig. 2 is simple drill configurations figure of the present utility model.
Fig. 3 is middle body of rod structural map of the present utility model.
Fig. 4 is branch sleeve structural map of the present utility model.
Fig. 5 is afterbody rod structure figure of the present utility model.
Fig. 6 is conical rubber plug structural map of the present utility model.
Fig. 7 is drilling schematic diagram of the present utility model.
In figure：The body of rod in the middle of the simple drill bits of 1-, 2-, 3- branch sleeves, the 4- afterbody bodies of rod, 5- conical rubber plugs, 6- pallets,
7- nuts, 8- injected holes, 9- connection external screw threads, the rib joints of 10- six, 11- drill bit internal threads, 12- connection internal threads, 13- fastenings
Screw thread, 14- rubber stopper internal threads.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
It is described below from boring from the mechanical structure of anchor extensible anchor pole：
As shown in figure 1, it is of the present utility model be suitable for weak coal petrography from boring from anchor extensible anchor pole, including simple drill bit
1st, the combination body of rod and fastener, the combination body of rod include the branched middle body of rod 2, multiple branch sleeves 3 and the afterbody body of rod 4, branched
The middle body of rod 2 is integrally connected by multiple branch sleeves 3, and the afterbody of the body of rod 2 connects tail by branch sleeve 3 in the middle of last branch
Portion's body of rod 4, Fig. 1 show the situation using the body of rod 2 in the middle of one section.The fastener is threadedly attached in the afterbody body of rod 4
On, the fastener includes conical rubber plug 5, pallet 6 and the nut 7 that order is located on the afterbody body of rod 4.
Fig. 2 is provided with connection internal thread 12 in the simple structural map of drill bit 1, simple drill bit 1；
As shown in Figure 3 and Figure 5, the head of the middle body of rod 2 is provided with connection external screw thread 9, and tail end is provided with composite-joint, described
Composite-joint is constituted for the connection rib joint 10 of external screw thread 9 and six, and the afterbody body of rod 4 sets connection external screw thread 9, tail except head
Portion end is provided with fastening thread 13；The surface of the middle body of rod 2 and the afterbody body of rod 4 is regular screw threads steel screw thread, axially hollow to be provided with
Injected hole 8；The length of the upper and lower ends connection external screw thread 9 of the middle body of rod 2 is 10mm~150mm, and the length of six rib joints 10 is
10mm~80mm, the length of fastening thread 13 is 30mm~150mm, and the length of the afterbody body of rod 4 is 400mm~3500mm.
As shown in figure 4, there is the connection internal thread 12 matched with the middle body of rod 2 in the branch sleeve 3.Branch sleeve 3
Length is 40mm~160mm, the 105%~130% of a diameter of middle diameter of the body of rod 2 of branch sleeve 3.
As shown in fig. 6, the rubber stopper internal thread of the inner side of conical rubber plug 5 provided with increase with the frictional force of the afterbody body of rod 4
14。
For convenience of anchor pole total length after control assembling, while being unlikely to cause frequent spreading because every section of body of rod is too short, often
Section body of rod length is in 400mm~1600mm；To ensure connection effect, while the oversize waste of materials in spreading part and time are avoided,
The upper and lower ends connection external thread length of the middle body of rod is 15mm~100mm, and six rib joint lengths are 10mm~35mm, adapter sleeve
Tube length degree is 50mm~150mm, and fastening thread length is 30mm~150mm.
The simple overall diameter of drill bit 1 3~8mm bigger than anchor rod body diameter, the simple drill bit 1 is provided with opening for being connected with the body of rod
Mouthful, provided with multiple raised and centroclinal sharp knife around opening, the top of sharp knife is away from bit central 3mm~5mm, simple drill
First 1 side, which is provided with, is used to that the powder discharge bit location helical groove produced will to be crept into, and the width of groove is 5mm~8mm, recessed
The depth of groove is 3mm~5mm.The side of simple drill bit 1 is provided with multiple resistance claws in groove gap location, and the resistance claw includes groove
Chamber, circular shaft, high-strength baffler and brute spring, the vallecular cavity rotate for high-strength baffler and provide a space, vallecular cavity bottom one
Side is flexibly connected by circular shaft with high-strength baffler, and brute spring, high-strength barrier are provided between high-strength baffler and vallecular cavity bottom
Plate is upspring using brute spring and can rotated by circular shaft in vallecular cavity.The bit diameter of small punching construction exceedes to be bored from anchor certainly
Extensible anchor rod body diameter 1mm~10mm.
A kind of anchoring process from brill from anchor extensible anchor pole, comprises the following steps：
A. first constructed in design drill hole with common drilling rod to the 1/4~3/4 of design drillable length, then extract out and bore
Part collapse hole occurs in bar, now drilling；
B. the quantity of the middle body of rod 2 and branch sleeve 3 needed is selected according to the length of design drilling, branch sleeve is utilized
The middle body of rod 2 and the afterbody body of rod 4 are fitted together composition anchor rod body by 3.Assembling and drilling process are as follows：In first branch intermediate bar
Simple drill bit 1 is installed in the front end of body 2, and head feeding drilling after rear end is attached on rig, is crept into.Drilling process
In, spreading is carried out using branch sleeve 3 and the middle body of rod 2, is carried out using the afterbody body of rod 4 after last time spreading, each spreading,
By Combination nova into body of rod least significant end be attached on rig, crept into.Until completing the whole drillable length of drilling；By
The regular screw threads steel screw thread that the anchor rod body body of rod surface constituted in the middle body of rod 2 and branch sleeve 3 is provided with, does not possess row's powder work(
Can, coal or rock dust are not arranged in drilling process, the anchor pole of drilling has a large amount of coal petrography powder between brill section and the body of rod, made by friction
Obtain rod end and produce end anchor-hold, 1/4~3/4 section of drilling superficial part because weak coal and rock drills there is the contraction of quick collapse hole to become
The property of shape, the extruding body of rod produces anchor force；
C. as the protruded length of the afterbody body of rod 4 residue 30mm~150mm, rig is closed, by rig and afterbody
The body of rod 4 separate after on the fastening thread 13 of the afterbody of the afterbody body of rod 4 covers successively conical rubber plug 5, pallet 6, nut 7, and screw
Nut 7 carries out pretension, completes once mounting；
D. after constructing 1 hour~2 hours, drilling collapse hole contraction distortion is more abundant, and anchor force is bigger, with spanner to nut
5 carry out screwing the secondary pretension of completion, at the same can it is anti-around it is other from caused when boring from anchor extensible anchor bolt construction should be from brill from anchor
The Relaxation of prestressing of extensible anchor pole；
E. after constructing 12 hours~24 hours, underground work personnel are checked by torque-indicating wrencg and bored certainly from anchor extensible anchor pole
Pretightning force, such as pretightning force can not be met when requiring again to carrying out pretension from boring from anchor extensible anchor pole, realize pretightning force
Maintain.
Claims (5)
1. it is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole, it is characterised in that：It includes simple drill bit (1), group
Close the body of rod and fastener；The combination body of rod head is connected by drill bit internal thread (11) with simple drill bit (1), compound rod
Body includes the branched middle body of rod (2), multiple branch sleeves (3) and the afterbody body of rod (4), and the branched middle body of rod (2) passes through multiple companies
Female connector cylinder (3) is integrally connected, and the afterbody of the body of rod (2) connects the afterbody body of rod (4), institute by branch sleeve (3) in the middle of last branch
State fastener to be threadedly attached on the afterbody body of rod (4), the fastener includes order and is located on the afterbody body of rod (4)
Conical rubber plug (5), pallet (6) and nut (7).
2. it is according to claim 1 be suitable for weak coal petrography from boring from anchor extensible anchor pole, it is characterised in that：In described
Between the body of rod (2) head provided with connection external screw thread (9), tail end be provided with composite-joint, the composite-joint for connection external screw thread (9) and
Six rib joints (10) are constituted, and the afterbody body of rod (4) sets connection external screw thread (9) except head, and tail end is provided with fastening spiral shell
Line (13)；The surface of the middle body of rod (2) and the afterbody body of rod (4) is regular screw threads steel screw thread, axially hollow to be provided with injected hole (8)；
The length of the upper and lower ends connection external screw thread (9) of the middle body of rod (2) is 10mm~150mm, and the length of six rib joints (10) is
1080mm, the length of fastening thread (13) is 30mm~150mm, and the length of the afterbody body of rod (4) is 400mm~3500mm.
3. it is according to claim 1 be suitable for weak coal petrography from boring from anchor extensible anchor pole, it is characterised in that：The company
Have the connection internal thread (12) matched with the middle body of rod (2) in female connector cylinder (3), branch sleeve (3) length be 40mm~
160mm, the 105%~130% of a diameter of middle body of rod (2) diameter of branch sleeve (3).
4. it is according to claim 1 be suitable for weak coal petrography from boring from anchor extensible anchor pole, it is characterised in that：The cone
Rubber stopper internal thread (14) provided with increase with the afterbody body of rod (4) frictional force on the inside of shape rubber stopper (5).
5. it is according to claim 1 be suitable for weak coal petrography from boring from anchor extensible anchor pole, it is characterised in that：It is first to bore
The bit diameter of hole construction exceedes to be bored from anchor extensible anchor rod body diameter 1mm~10mm certainly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284539.5U CN206503612U (en) | 2016-11-25 | 2016-11-25 | It is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284539.5U CN206503612U (en) | 2016-11-25 | 2016-11-25 | It is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole |
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| Publication Number | Publication Date |
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| CN206503612U true CN206503612U (en) | 2017-09-19 |
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| CN201621284539.5U Active CN206503612U (en) | 2016-11-25 | 2016-11-25 | It is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337692A (en) * | 2016-11-25 | 2017-01-18 | 中国矿业大学 | Self-drilling and self-anchoring anchor rod capable of being lengthened and suitable for weak coal rock and anchoring method thereof |
-
2016
- 2016-11-25 CN CN201621284539.5U patent/CN206503612U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337692A (en) * | 2016-11-25 | 2017-01-18 | 中国矿业大学 | Self-drilling and self-anchoring anchor rod capable of being lengthened and suitable for weak coal rock and anchoring method thereof |
| CN106337692B (en) * | 2016-11-25 | 2018-08-24 | 中国矿业大学 | It is a kind of be suitable for weak coal petrography from boring from anchor extensible anchor pole and its anchoring process |
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