CN101535598B - A rock bolt and an anchoring device - Google Patents

A rock bolt and an anchoring device Download PDF

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Publication number
CN101535598B
CN101535598B CN2007800425476A CN200780042547A CN101535598B CN 101535598 B CN101535598 B CN 101535598B CN 2007800425476 A CN2007800425476 A CN 2007800425476A CN 200780042547 A CN200780042547 A CN 200780042547A CN 101535598 B CN101535598 B CN 101535598B
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CN
China
Prior art keywords
axle
anchoring device
rock bolt
expandable element
connector
Prior art date
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Expired - Fee Related
Application number
CN2007800425476A
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Chinese (zh)
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CN101535598A (en
Inventor
史蒂文·韦弗
达雷·韦伯
约翰·霍斯
马修·肯尼
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Sandvik Intellectual Property AB
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Sandvik Intellectual Property AB
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Publication date
Priority claimed from AU2006236010A external-priority patent/AU2006236010B2/en
Application filed by Sandvik Intellectual Property AB filed Critical Sandvik Intellectual Property AB
Priority claimed from PCT/SE2007/000928 external-priority patent/WO2008060211A1/en
Publication of CN101535598A publication Critical patent/CN101535598A/en
Application granted granted Critical
Publication of CN101535598B publication Critical patent/CN101535598B/en
Expired - Fee Related legal-status Critical Current
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0053—Anchoring-bolts in the form of lost drilling rods
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0066—Anchoring-bolts formed by a bundle of radially arranged rigid elements

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to a rock bolt (10) comprising first (11) and second ends (12), a shaft (13) extending between the ends, and an anchoring device (23) extending along a first part of the shaft adjacent the first end. The anchoring device comprises a mandrel (29), and at least one expansion element (24) overlaying the mandrel. The expansion element is displaced radially outwardly on a predetermined relative movement between the mandrel and the expansion element. The expansion element is joined to a connector (25) to form an anchor assembly. The anchor assembly is keyed to the mandrel. The anchor assembly comprises relative rotation actuator means (42A, 42B) active during rotation of the anchoring device. The invention further relates to an anchoring device (23) per se.

Description

Rock bolt and anchoring device
Technical field
The present invention relates to be suitable in mining driving industry the rock bolt in order to the supporting that top and wall are provided.The present invention is applicable to hard rock common in colliery for example and incompetent bed is used, and should be understood that, gives term " rock " wide significance that this manual uses, thereby contains above-mentioned two kinds of application.The present invention also relates to a kind of anchoring device in essence.
Background technology
Being bearing in the mining excavation operation of top and wall is most important.The wall in mine and tunnel and top are comprised of the rock stratum that must reinforce with the possibility that prevents from caving in.Rock bolt is widely used in reinforcing this rock stratum.
In conventional strata support systems, use drilling rod that rock is holed, then remove this drilling rod, thereupon also usually using the grouting of resin or cement based in the hole that rock bolt is arranged on institute's Drilling, this rock bolt is fixed on the appropriate location.
In order to improve this treatment process, self-drilling rock anchor has been proposed, whereby also can be with anchor pole as drilling rod.Thereby, self-drilling rock anchor has been arranged, can disposable boring and skyhook.
Although self-drilling rock anchor provides the possibility of greatly improving the rock bolt set-up time, self-drilling rock anchor is widely used.
Expectablely be that rock bolt does not carry out grappling sometimes in the hole of Drilling in advance.
Summary of the invention
according to a first aspect of the invention, a kind of rock bolt is provided, it comprises first end and the second end, the axle that extends between two ends, the anchoring device that extends along the first of the contiguous first end of axle, this anchoring device comprises axle and covers at least one expandable element of this axle, wherein radially outward be shifted during the predetermined relative movement of at least one expandable element between axle and at least one expandable element, wherein at least one expandable element is connected to connector and forms anchor assemblies, described anchor assemblies is keyed to axle, and described anchor assemblies is included in the actuator devices that relatively rotates that works during the rotation of anchoring device.In concrete form, above-mentioned connector comprises the above-mentioned actuator devices that relatively rotates.In concrete form, above-mentioned connector comprises body part and at least one connection leg, the described actuator devices that relatively rotates of described connection leg carrying.
In concrete form, above-mentionedly relatively rotate attached (tag) that actuator devices arranges for the end of contiguous above-mentioned leg and become one with connector, described attached is suitable for during being rotated in a first direction inoperatively, and works on second direction during the grappling of anchoring device.
In concrete form, above-mentioned connector comprises two legs, and each leg has at least one attached.
In concrete form, each attached outstanding along second direction from above-mentioned leg.
In concrete form, above-mentioned rock bolt is self-drilling rock anchor, and wherein, first end has the drill bit that is used for penetrating rock during holing along first direction.
In one form, axle is installed to the external screw thread on above-mentioned axle and covers at least one expandable element of this axle, and axle coordinates with this external screw thread and expandable element, wherein radially outward be shifted during the predetermined relative movement of at least one expandable element between axle and at least one expandable element, wherein, connector is arranged between the end that loosely remains on drill bit and axle head, and wherein said drill bit or described axle and described connector comprise and relatively rotate stop part.
In one form, relatively rotate stop part and be arranged to stop anchor assemblies around the rotation of drillstock axis, thereby prevent that axle from moving axially in one direction along bolt shaft during described first direction boring.
In concrete form, relatively rotate stop device and comprise the concave surface on the shoulder surface that is positioned at drill bit or axle and be arranged on projection on connector, described concave surface holds described projection at least during holing.
according to a further aspect in the invention, a kind of anchoring device for rock bolt is provided, this anchoring device is arranged for and keeps anchor pole when holing when being positioned at, this anchoring device comprises axle and covers at least one expandable element of this axle, wherein outwards displacement diametrically during the predetermined relative movement of at least one expandable element between axle and at least one expandable element, wherein at least one expandable element is connected to connector and forms anchor assemblies, described anchor assemblies is keyed to axle, and described anchor assemblies is included in the actuator devices that relatively rotates that works during the rotation of anchoring device.In concrete form, above-mentioned connector comprises the above-mentioned actuator devices that relatively rotates.
In a form, connector comprises body part and at least one connection leg, the described actuator devices that relatively rotates of described leg carrying.
In concrete form, above-mentioned relatively rotate that actuator devices arranges for the end of contiguous connection leg and with attached of connector all-in-one-piece, described attached is suitable for during being rotated in a first direction inoperatively, and works on second direction during the grappling of anchoring device.In concrete form, connector comprises two legs, and each leg has at least one attached.Particularly, give prominence to along second direction from above-mentioned leg for each attached.In concrete form, axle has internal thread and covers at least one expandable element of this axle, wherein radially outward be shifted during the predetermined relative movement of at least one expandable element between axle and at least one expandable element, wherein said connector comprises and relatively rotates stop device.In concrete form, relatively rotate stop device and comprise the projection that is arranged on connector.In concrete form, anchoring device is suitable for being connected to self-drilling rock anchor.
Description of drawings
For convenience's sake, embodiments of the invention are hereinafter described with reference to the accompanying drawings.The detailed content of accompanying drawing and associated description should be interpreted as and not replace the summary that the aforementioned popularity of the present invention is described.
In the accompanying drawings:
Fig. 1 is the perspective schematic view of self-drilling rock anchor;
Fig. 2 A is the exploded view of the first end of Fig. 1 self-drilling rock anchor;
Fig. 2 B is another exploded view of the first end of Fig. 1 self-drilling rock anchor;
Fig. 3 is the lateral view of the first end of Fig. 1 self-drilling rock anchor;
Fig. 4 is the sectional drawing of the first end of Fig. 1 self-drilling rock anchor when being arranged in the rock stratum;
Fig. 5 A is the top view that partly is under the collapse state and partly is in the connector of Fig. 1 self-drilling rock anchor under extended mode;
Fig. 5 B is the lateral view that partly is under the collapse state and partly is in the connector of Fig. 1 self-drilling rock anchor under extended mode;
Fig. 6 A is the upward view of the drill bit of Fig. 1 self-drilling rock anchor;
Fig. 6 B is the lateral view of the drill bit of Fig. 1 self-drilling rock anchor;
Fig. 7 is the lateral view of the drill bit that engages of the connector with Fig. 5 A and Fig. 5 B in Fig. 6 A and Fig. 6 B.
The specific embodiment
Fig. 1 shows self-drilling rock anchor 10, the axle 13 that it combines first (boring) end 11, second (nut) end 12 and extends between opposite end 11 and 12.Usually for solid and be combined with inner passage 14 (referring to Fig. 4), this inner passage is along far-end (first) part of the adjacent borehole end of anchor pole along main (second) of its length part for the axle 13 that is formed from steel.This inner passage is via transverse port 60 and end port 61 and be communicated with the outside of axle two positions.
In use, self-drilling rock anchor 10 is connected to boring and anchor pole fastening (not shown) and be used as (referring to Fig. 4) drilling rod of drilling bore hole 100 in rock stratum 500.After this, will be described in more detail as following, rock bolt 10 will be fixed to the appropriate location, thereby provide supporting for rock stratum 500.
Drill end 11 combines drill bit 15 and anchoring device 23, and this drill bit 15 combines the apex point 16 that is positioned at the one end, and this anchoring device 23 in use be arranged to anchor pole remain on hole in.Anchoring device 23 extends and is used for anchor pole 10 is remained in boring along the first of anchor pole, thereby introduce hole 100 permanently anchor pole be fixed on the appropriate location and/or make before to such an extent as to anchor pole tensioning rock stratum 500 is in pressured state will be in the milk, rock bolt temporarily is fixed on the appropriate location.
See best the details of drill end 11 in Fig. 2 A to Fig. 6 B.
During bore operation, drilling equipment guides to auger spindle with the dextrorotation rotation usually.For guaranteeing that drill bit 15 can not separate with axle during bore operation, be threaded to right-handed thread between drill bit 15 and axle 13, thereby trend towards forming being threaded between drill bit and axle during bore operation.
Drill bit 15 comprises drill body 17 and bit sub 18, and this drill body 17 comprises the apex point 16 that is positioned at its outer end, and this bit sub 18 combines the fastener external screw thread 22 on being positioned at its external surface.Passage 19 extends to the end of drill body 17 from the tip of bit sub 18.Passage 19 is arranged to: when drill bit 15 is fixed to axle head 20, be communicated with (high-visible in Fig. 4) with end port 61 fluids of the inner passage 14 of axle.Axle head 20 comprise with bit sub 18 on the internal thread 21 (referring to Fig. 4) of external screw thread 22 complementations.Thereby, can easily drill bit 15 be screwed to the axle head 20 of axle 13.
Drill bit 15 is provided with the shoulder surface 80 that is connected with bit sub 18.Shoulder surface 80 is roughly extended perpendicularly with bit sub.When drill bit being installed, shoulder surface is towards axle 13.Shoulder surface comprises at least one concave surface 81 that forms at least one upstanding wall 82.Concave surface 81 tilts with the sharp angle α with respect to shoulder surface.The size of this angle is greater than the externally threaded helical angle that is formed on drillstock.The size of angle [alpha] is than the helical angle large at least 20% that is formed on the external screw thread 38 on bolt shaft 13.In other words, concave surface tilts to be similar to the left hand thread opposite with right-handed thread in Fig. 6 B.Upstanding wall 82 relatively rotates stop part (below be described further) with forming section.
Anchoring device 23 is disposed in drill bit 15 belows and comprises a pair of expandable element 24, this is designed to make it outwards to move to the extended mode (not shown) from retracted position shown in the drawings to expandable element, wherein, expandable element 24 engages the wall 101 of boring 100.
Expandable element 24 is by connector or clamping band (bail strap) 25 interconnection.This connector usually is formed from steel and comprises and be roughly circular main part 26 and connection leg 27.Connection leg 27 is by the near-end 28 of riveted joint (or otherwise fixing) to expandable element 24.Expandable element is connected to connector, to form anchor assemblies.By making connector 25 be formed from steel, its energy deflection, provide whereby the loose-joint butt that allows the expandable element pivotable, thereby expandable element can move between its retracted position and expanding location easily.
Body part 26 is preferably and is roughly circle and comprises centre bore 84 in order to receiving drill bit handle 18.Body part 26 is being provided with at least one projection or upright joint tongue 83 on the surface of drill bit 15.Be preferably, in the central region position of body part, namely a position between hole 84 and body part periphery stamps out joint tongue 83.Joint tongue 83 has as apparent roughly V-arrangement in Fig. 5 B, but also can have any other suitable shape, for example U-shaped or semicircle.The maximum height of this joint tongue is less than the depth capacity of concave surface 81.This joint tongue comprises leading edge 85, and namely connector is with the leading edge in left hand direction rotation situation.Leading edge 85 is substantially perpendicular to the plane of body part 26.Above-mentioned joint tongue will be held by concave surface 81 also can be against upstanding wall 82 during holing.Therefore, this joint tongue relatively rotates stop part (below be described further) with forming section.
Because anchoring device may be stuck in axle head 20, so 27 carryings of each leg relatively rotate actuator devices or guide attached 42A, 42B, namely connector 25 is along " guiding " in left hand direction or the second direction of rotation rotation situation.Therefore, each attached 42A, 42B are outstanding along the second direction of rotation from above-mentioned leg.Attached 42A, 42B be set to contiguous leg away from that end of body part 26 and become one with connector.In Fig. 5 A and Fig. 5 B, for the illustrative reason, attached 42A is shown as and is in retracted mode, and attached 42B is shown as and is in extended mode.Therefore, attached is suitable in boring inoperatively during (dextrorotation rotation), and works or bends outwards during grappling (left-handed rotation).The geometry of attached is for what choose wantonly, and for example this attached can be folding (concertina) shape.
Anchoring device 23 also comprises axle 29, and this axle comprises relative inclined-plane 30 and 31.In exemplary form, axle 29 comprises head 32 and two dangle leg 33 and 34, and formation corresponding inclined plane 30 and 31, the opposite edges of the opposite face of head 32 and leg 33 and 34 surface.Head 32 can have two in order to the relative groove of the part of the leg that holds connector.
Axle is arranged so that inclined- plane 30 and 31 for basically flat and be designed to inner surface 35 adjacency with expandable element 24, thereby makes axle make expandable element move to expanding location from its retracted position towards the relative motion of the nut end 12 of axle.
In order to realize this relative motion, axle is attached to bolt shaft, in exemplified arrangement, bolt shaft by the internal thread 36 in the endoporus 37 in the head 32 with axle of being formed on 29 and be formed on external screw thread 38 on bolt shaft 13 be threaded to realize relative motion.
Be threaded to left hand thread between axle 29 and bolt shaft 13, with convenient rock bolt (under the dextrorotation of axle rotation) when standing bore operation, any relative motion between axle and bolt shaft will make axle move towards drill end, thereby guarantee that expandable element can not move to its extended mode.Simultaneously, self-drilling rock anchor has avoided axle to cross being anchored on tightly connector and drill bit and the problem that makes axle not unclamp.But in alternative form, axle can be provided with directly with drill bit on groove or the projection projection or the groove that coordinate, thereby alternative the first rotational stop part is provided.
Anchoring device 23 also can comprise unshowned endless belt, this endless belt can be arranged in around the end of expandable element 24.Made and be arranged to only in transportation with during beginning to hole, expandable element 24 to be kept together by polymeric material or elastomeric material usually in this endless belt.
Attached 42A, 42B of connector are arranged to has two states.Fig. 3 shows the first state, and attached 42A, 42B are folding towards axle 29.When carrying out the dextrorotation rotation during bore operation when attached, above-mentioned situation can appear.Shown in Fig. 5 A in second state on the right side, attached periphery from connector 25 bends outwardly.This situation can occur during the relatively rotating of anchor pole, and this situation causes by attached, wherein the attached wall surface 101 by boring under the effect of this rotation.In the time of under second (or expansion) state, there is the more main trend of the wall surface of attached chip bonding boring.In case they clamp, anchoring device just begins to slide with respect to axle, causes whereby some relative motion.This motion cause again axle begin to turn from above-mentioned axle under (winding down), make whereby expandable element be shifted outwardly.
Therefore, connector 25 can be carried out several functions.The first function is that expandable element is remained with the axial abaxial end of setpoint distance.The second function is that axle and expandable element are combined rotatably.The 3rd function is to provide the hole, in order to drill bit can be screwed in axle.The 4th function is forming section rotational stop device, and this rotational stop device prevention axle is crossed is threaded to drill bit tightly.Five-function is to provide clamp hole wall during grappling attached, makes whereby anchoring device rotate with respect to axle.
As shown in Figure 1, rock bolt 10 comprises along the sleeve 62 of the major part of axle 13.Sleeve 62 is from passing nut end 12 and extending near nut end 12 near anchoring device 23.The purposes of sleeve is to provide at least part of peripheral passage, thereby allows fluid to arrive drill end 11 from nut end 12 processes.The peripheral passage is provided by the passage and the inner passage 14 that are formed between bolt shaft 13 and sleeve 62.Inner passage 14 is via transverse port 60 and be formed on channel connection between axle 13 and sleeve 62.
The peripheral passage also comprises the external channel 64 between the wall 101 that is formed on sleeve 62 and boring 100.By making apex point 16 form this external channel radially to extend greater than the distance of the radius of sleeve 62.
Sleeve 62 is sealed in its end 65 by the collar 66.The collar 66 can be combined with internal thread, and in order to be attached on external screw thread 38, this external screw thread is out processed on the top of axle 13.
The embedded near-end that engages to seal this sleeve of driving coupling 43 of also describing in detail in the near-end 67 by making sleeve 62 and applicant's Australian patent application No.200620778 is incorporated this application in this manual into herein by reference.
Base plate and spherical washer 72 can be arranged on axle 13, and block base plate and spherical washer by transmission nut 43.Base plate is arranged to against the rock stratum 500 outside.
The operation before, suitably with anchoring device 23 spirals on axle 13, the downside of the body part 26 of device 25 until axle head 20 is connected.Then drill bit 15 is screwed in the internal thread 21 of axle head, until drill bit pommel 86 engages the bottom 87 of internal thread 21.
In operating process, via transmission nut 43, anchor pole 10 is fixed to drilling equipment, this makes rock bolt rotate along first direction.Pumping drilling fluids around the circulation canal that is formed by the passage between axle and sleeve 62, inner passage 60 and external channel 64 is to rinse the Rock cutting face of rock bolt.The port of fluid from the transmission nut 43 that rinses introduced or discharged.
Complete boring during the stage, drilling equipment makes anchor pole along opposite direction rotation thereupon.When relative motion was stoped by torque pin, transmission nut 43 rotated together with axle 13.This makes attached 42A, 42B open outwardly, to such an extent as to connector clamping wall surface 101, thus make expandable element 24 and axle 29 beginnings slide with respect to bolt shaft.The relative motion that causes between anchoring device and axle causes under axle turns from the screw thread of this axle, to such an extent as to radially displacement outwardly of expandable element, thus engage the rock surface of boring.
When expandable element engages with wall surface, make anchor pole be in tensioning by continuing to apply torsion moment to transmission nut 43 on second direction.At specified point, expandable element 24 is subject to powerful active force and against crag surface, to such an extent as to axle can not further move down from axle.At this moment, can effectively limit anchor pole, and prevent that it is further rotated.This will make moment of torsion in transmission nut 43 places gathering, will cut off the point of torque pin until this transmission nut arrives, and make whereby transmission nut move with respect to axle.Then, this relative motion causes nut to screw above-mentioned axle.
In case transmission nut can move along bolt shaft, this transmission nut will engage with the external surface of rock stratum 500 (directly or pass through base plate), when the effective length when anchor pole between transmission nut and anchoring device shortens, the external surface of this rock stratum will make anchor pole be in tensioning.In case anchor pole is under enough tensionings, this moment removable drilling equipment, and may be for further supporting, carry out introducing grouting and with rockbolt installation final stage in position via the port in transmission nut 43.
Should be understood that, desired anchoring device 25 can be used for non-self-drilling rock anchor, is namely inserting the rock bolt that needs preboring to punching before anchor pole.
In appended claim and in relatively rotating actuator devices aforementioned, except the context needs or due to representation language or inevitable hint, word " is comprised (comprise) " or comprises (comprising) such as " comprise (comprises) or " " variant as the meaning that comprises; namely, show that described feature exists but do not get rid of exist in the various embodiment of invention or increase other features.
Can make modification and/or change to aforementioned part under the prerequisite that does not break away from the spirit or scope of the present invention.

Claims (25)

1. rock bolt with axis, comprise along first end and second end at axis interval, the axle that extends between described end, and the anchoring device that extends along the first of the described first end of vicinity of described axle, described anchoring device comprises axle and covers at least one expandable element of described axle, radially outward be shifted during the predetermined relative movement of wherein said at least one expandable element between described axle and described at least one expandable element, wherein said at least one expandable element is connected to connector, to form anchor assemblies, and described anchor assemblies is keyed to described axle, and described anchor assemblies is included in the actuator devices that relatively rotates that described anchoring device works during the rotation of the axis of described rock bolt, the described actuator devices that relatively rotates is inoperative during first direction rotation and working during the second direction rotation, and wherein said anchor pole rotates along second direction, make the described actuator devices that relatively rotates when working cause predetermined motion, thereby by being shifted, described at least one expandable element realizes the grappling of described anchoring device outwardly.
2. rock bolt according to claim 1, the wherein said actuator devices that relatively rotates is arranged on described connector.
3. rock bolt according to claim 1 and 2, wherein said connector comprise body part and at least one connection leg, the described actuator devices that relatively rotates of described leg carrying.
4. rock bolt according to claim 3, the wherein said actuator devices that relatively rotates comprises one or more attached of extending from described at least one leg.
5. rock bolt according to claim 4, wherein said at least one connection leg has the close end that is connected with described body part and the distal portion of removing and carrying described attached along axis and the described close end of anchor pole.
6. rock bolt according to claim 5, wherein said relatively rotating when actuator devices is arranged in described anchoring device along the rotation of second direction clamps the wall surface of holing, thereby causes described predetermined motion.
7. rock bolt according to claim 6, wherein, described when relatively rotating the engaging of actuator devices and the described wall surface of holing, it is described that to relatively rotate actuator devices biased and folding towards described anchoring device when rotating along first direction, and when described anchor pole rotates along second direction, the described actuator devices that relatively rotates is biased and stretch out, thereby clamps described described wall surface of holing.
8. rock bolt according to claim 7, wherein said connector comprises two legs, each leg has at least one attached.
9. rock bolt according to claim 8, wherein, give prominence to along second direction from described leg for each attached.
10. rock bolt according to claim 5, wherein said rock bolt is self-drilling rock anchor, wherein said first end has drill bit, in order to penetrate rock during first direction boring.
11. rock bolt according to claim 10, at least one expandable element that wherein said axle is installed to the external screw thread on described axle and covers described axle, and described axle coordinates with described external screw thread and described at least one expandable element, radially outward be shifted during the predetermined relative movement of wherein said at least one expandable element between described axle and described at least one expandable element, wherein said connector is arranged between the end of axle head of the contiguous drill bit that is loosely remained on drill bit and described axle, wherein said drill bit comprises that relative rotation stop or described axle respectively comprise relative rotation stop with described connector.
12. rock bolt according to claim 11, wherein said relative rotation stop is arranged to stop described anchor assemblies around the rotation of auger spindle line, thereby prevents that described axle from moving axially in one direction at the described axle along described anchor pole during described first direction boring.
13. rock bolt according to claim 11, the described anchoring device of wherein said relative rotation stop restriction rotates on described axle, thereby keeps the interval between the end face of the end face of described anchoring device and described drill bit during holing.
14. rock bolt according to claim 11, wherein said stop part comprises the fit adjacent face, and a described face is arranged on described drill bit, and another described face is arranged on described anchoring device.
15. rock bolt according to claim 11, wherein said stop part comprise the concave surface on the shoulder surface that is positioned at described drill bit and are arranged on projection on described connector or axle, and described concave surface holds described projection at least during holing.
16. anchoring device that is used for rock bolt, described anchoring device is used for keeping when holing when being positioned at described anchor pole, described anchoring device comprises axle and covers at least one expandable element of described axle, radially outward be shifted during the predetermined relative movement of wherein said at least one expandable element between described axle and described at least one expandable element, wherein said at least one expandable element is connected to connector, to form anchor assemblies, and described anchor assemblies is keyed to described axle, and described anchor assemblies comprises and relatively rotates actuator devices, described rock bolt is arranged in use along the axis rotation around anchor pole of first direction and opposite second direction, the described actuator devices that relatively rotates is arranged to inoperative during rotating along first direction and is working during the second direction rotation, and wherein said anchor pole rotates along second direction, make the described actuator devices that relatively rotates when working cause predetermined motion, thereby by being shifted, described at least one expandable element realizes the grappling of described anchoring device outwardly.
17. anchoring device according to claim 16, the wherein said actuator devices that relatively rotates is arranged on described connector.
18. anchoring device according to claim 17, wherein said connector comprise body part and at least one connection leg, the described actuator devices that relatively rotates of described leg carrying.
19. anchoring device according to claim 18, the wherein said actuator devices that relatively rotates comprises one or more attached that gives prominence to from described at least one leg.
20. anchoring device according to claim 19, wherein said at least one connection leg have the close end that is connected with described body part and remove and be loaded with the distal portion of described attached along axis and the described close end of anchor pole.
21. according to claim 19 or 20 described anchoring devices, wherein said connector comprise two legs, each leg has at least one attached.
22. according to claim 19 to the described anchoring device of any one in 20, wherein, each attached outstanding along second direction from described leg.
23. according to claim 16 to the described anchoring device of any one in 19, wherein said axle has internal thread and covers at least one expandable element of described axle, radially outward be shifted during the predetermined relative movement of wherein said at least one expandable element between described axle and described at least one expandable element, wherein said connector combines part rotation stop relatively.
24. anchoring device according to claim 23, the relative rotation stop of wherein said part comprises the projection that is arranged on described connector.
25. according to claim 16 to the described anchoring device of any one in 19, wherein said anchoring device is suitable for being connected to from the hole drilling type rock bolt.
CN2007800425476A 2006-11-15 2007-10-23 A rock bolt and an anchoring device Expired - Fee Related CN101535598B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AU2006236012A AU2006236012B2 (en) 2006-11-15 2006-11-15 A rock bolt and an anchoring device
AU2006236010 2006-11-15
AU2006236010A AU2006236010B2 (en) 2006-11-15 2006-11-15 A drilling tool, a self drilling rock bolt, a drill bit and an anchoring device
AU2006236012 2006-11-15
PCT/SE2007/000928 WO2008060211A1 (en) 2006-11-15 2007-10-23 A rock bolt and an anchoring device

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Publication number Publication date
CN101535598A (en) 2009-09-16
CN101535597A (en) 2009-09-16
CN101535597B (en) 2013-10-02
ZA200902598B (en) 2014-09-25
GB2456945B (en) 2011-04-06
GB0907507D0 (en) 2009-06-10
WO2008060212A1 (en) 2008-05-22
NO20091376L (en) 2009-08-06
AU2006236012B2 (en) 2009-06-04
WO2008060212A8 (en) 2009-05-14
GB2456945A (en) 2009-08-05
AU2006236012A1 (en) 2008-05-29

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