CN106761868B - A kind of novel durable magnetization anchor pole - Google Patents
A kind of novel durable magnetization anchor pole Download PDFInfo
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- CN106761868B CN106761868B CN201611259966.2A CN201611259966A CN106761868B CN 106761868 B CN106761868 B CN 106761868B CN 201611259966 A CN201611259966 A CN 201611259966A CN 106761868 B CN106761868 B CN 106761868B
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- rod body
- anchor rod
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- magnetization
- steel pipe
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- 230000005415 magnetization Effects 0.000 title claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 78
- 239000010959 steel Substances 0.000 claims abstract description 78
- 239000011435 rock Substances 0.000 claims abstract description 52
- 238000005553 drilling Methods 0.000 claims abstract description 49
- 210000000078 claw Anatomy 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000014759 maintenance of location Effects 0.000 claims abstract description 15
- 238000005336 cracking Methods 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 5
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- 230000008719 thickening Effects 0.000 claims description 23
- 230000009471 action Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 238000004873 anchoring Methods 0.000 claims description 8
- 230000005389 magnetism Effects 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 15
- 230000033001 locomotion Effects 0.000 description 9
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- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
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- 238000009792 diffusion process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 2
- 230000010534 mechanism of action Effects 0.000 description 2
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Classifications
-
- 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
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The present invention discloses a kind of novel durable magnetization anchor pole, comprising: anchor rod body, taper end cap, taper retainer nut, claw type elasticity prevents swollen external bushing, spill spring ring, and elasticity magnetizes the steel pipe that cracks, rubber bushing, arch tray, antifriction washer thicken nut retention mechanism to top；It is characterized by: taper end cap guiding anchor rod body pierces drilling, taper retainer nut and drilling deep hole wall form self-locking structure, realize that anchor rod body axial direction promotes, claw type elasticity prevents that swollen external bushing is mobile to anchor rod body end, discharges elasticity and magnetizes the steel pipe that cracks, each blade tooth is shunk, spill spring is compressed axially, and elasticity magnetizes steel pipe expansion of cracking, wedge block fitting, outer wall of steel pipe and the wall of a borehole jam-packed thicken nut retention mechanism compression arch tray to top and apply pretightning force to anchor pole；One aspect of the present invention can make country rock be in triaxial stress state, on the other hand firm ground can extend bolt pretension to the effective acting time of country rock, improve the durability of anchor pole, improve support efficiency.
Description
Technical field
The present invention relates to underground coal mine or tunnel support technical fields, magnetize anchor pole more particularly, to a kind of novel durable,
The novel durable magnetizes anchor pole and is used for firm ground, it is prevented to be broken or collapse.
Background technique
Currently, the bolt support technology at home and abroad tunnel branch of all kinds of engineerings such as mine laneway and railway, water power, side slope
It is widely used in shield, is that construction work realizes one of safety, high yield and efficient essential key technology.With anchor pole
Firm ground technology reaches its maturity, and the application in mine laneway or tunnel support is also increasingly important.The type of conventional anchor
Having very much, is found by use of the different type anchor pole in engineering, that there are durabilities in Bracing Process is poor for existing anchor pole,
It is difficult to apply larger pretightning force, anchoring property is unstable, the low equal major defects of supporting intensity.Such as patent of invention
(CN101839143A) anchor pole corrosion and damage can be reduced by disclosing a kind of anchor pole, extend the anchor pole service life, such as patent of invention
(CN103422872A) a kind of anchor rod device is disclosed, can intuitively examine the pretightning force of anchor pole whether enough, is such as invented special
Sharp (CN104895104A) discloses a kind of inflation anchor bar basis, can be improved the ultimate bearing capacity of inflation anchor bar, does not all have
Effect extends bolt pretension action time, so that anchor pole is applied radial pressure to wall rock drill-hole hole wall for a long time, improves the durable of anchor pole
Property, enhance the ability of anchor pole firm ground.For pipe-seam type anchor rod in Bracing Process, anchor force changes very sensitive, anchor to aperture difference
Bar anchor force is affected by drilling factor, and anchoring property is unstable；Hydraulic expansion type anchor stock directly connects with the external world in supporting
Touching is easy to be caused anchor pole to fail by cargo sweat；Twisted steel anchor rod is since thread pitch is big and the cooperation of screw thread and nut controls hardly possible
Degree is big, makes it difficult to apply larger pretightning force, scene use moves back button frequent occurrence and pretightning force is caused to decline；Cause anchor pole that cannot grow
Phase control country rock is in triaxial stress state, and Anchoring Strength of Rock Bolts is caused to reduce.It is an object of the invention to overcome or at least
Reduce one or more disadvantages relevant to the anchor pole of prior art construction.
Summary of the invention
The invention aims to solve the problems, such as that a kind of novel durable that is of the existing technology and providing magnetizes anchor pole, institute
The novel durable magnetization anchor pole stated can immediately apply hole wall in length range for piercing wall rock drill-hole with borehole wall jam-packed
The frictional force for adding radial pressure and country rock being prevented to glide, in addition the supporting force of anchor pole arch tray, so that country rock be made to be in three-dimensional
Stress realizes that rock stratum is firm.For full length fastening, belong to active support, and anchor force with the increasing of surrouding rock deformation and
It gradually increases, the spill spring ring and anchor rod body and elasticity being mounted on anchor rod body magnetize the magnetic to repel each other between the steel pipe that cracks
Power, then the wedge-shaped radial dilatation structure for cooperating several wedge blocks to form are realized that elasticity magnetizes steel pipe expanse of cracking, are guaranteed
Its outer wall and borehole wall jam-packed, meanwhile, the spill spring ring being mounted on anchor rod body is compressed axially along anchor rod body, can be prolonged
Long pretightning force action time, elastic force and magnetic force can long term crack steel pipe in elasticity magnetization, enhance the durability of anchor pole, mention
Its high anchoring property.
To achieve the above object, the technical scheme adopted by the invention is that:
A kind of novel durable magnetization anchor pole is provided, mainly includes anchor rod body 19, taper end cap 2, taper retainer nut 3,
Claw type elasticity prevents swollen external bushing 4, and elasticity magnetizes the steel pipe 18 that cracks, spill spring ring 7, wedge-type expansion block 17, arch tray 14, rubber
Glue bushing 15, anti-attrition washer 9 thicken fastening nut (dextrorotation) 13, thicken self-locking nut (left-handed) 10.
The novel durable magnetizes anchor pole, and anchor rod body 19 has nose threads section 20 and tailing screw flight section 8, front end spiral shell
20 end of line section is mating to install the taper end cap 2 for being provided with symmetrical breach；Taper retainer nut 3 and claw type elasticity prevent swollen external bushing 4
By being threadably mounted in the nose threads section 20 of anchor rod body；Forward taper circle 5, end cone circle 16 and several wedge shapes expand
It opens block 17-2 and passes through the interlude that welding manner is mounted on anchor rod body 19；Spill spring ring is directly covered by in-between circular hole
In 19 interlude of anchor rod body, and its axial movement is by forward taper circle 5, end cone circle 16 and several wedge-type expansion blocks
17 common limitations；Elasticity magnetizes the steel pipe 18 that cracks and is sleeved on 19 interlude of anchor rod body, and elasticity magnetizes steel pipe inner ring limitation of cracking
Spill spring ring radial dilatation, before anchor pole pierces wall rock drill-hole, elasticity magnetization is cracked being radially expanded by pawl of steel pipe outer ring
Shape elasticity prevents the limitation of swollen external bushing 4；Rubber bushing 15 is by being threadably mounted in anchor rod body tailing screw flight section 8, rubber lining
Set 15 has certain thickness and elasticity, and can move along anchor rod body tailing screw flight section 8；Arch tray 14 and rubber bushing
15 match and are mounted in anchor rod body tailing screw flight section 8；9 sets of anti-attrition washer in anchor rod body tailing screw flight section 8；It thickeies tight
Gu nut (dextrorotation) 13 and thickening self-locking nut (left-handed) 10 are by being threadably mounted in anchor rod body tailing screw flight section 8.
The novel durable magnetizes anchor pole, and anchor rod body 19 is indulged muscle screw-thread steel by left-handed nothing and is processed into, and to its into
Row magnetization treatment makes it have certain magnetism, and it is that expansion member is rolled by sheet metal that elasticity, which magnetizes the steel pipe 18 that cracks, right
It makes it have identical magnetism with anchor rod body 19 after carrying out magnetization treatment, and opposing magnetic force between the two can pass through control
The circle number of magnetic history coil, diameter and apply voltage etc. to change；There are concave curve face 7-1, installations for spill spring ring 7
Concave curve face 7-1 is in elastic compression in advance before the interlude of anchor rod body 19, radial dilatation successively by
Elasticity magnetizes the limitation that crack steel pipe 18, claw type elasticity prevent swollen external bushing 4, and longitudinal pipe seam 6 that elasticity magnetizes the steel pipe that cracks is in
Compressive state.
The novel durable magnetizes anchor pole, and the taper end cap 2 for being provided with symmetrical breach is socketed in anchor rod body nose threads
The end head of section 20, the inner surface of taper end cap 2 and the outer surface of anchor rod body nose threads section 20 remain engaged with, taper end cap
2 planforms are taper or are similar to taper, and narrow end portion is there are symmetrical breach 1, the tapered end when anchor pole pierces wall rock drill-hole
Set 2 can play guide function, and the size of its symmetrical breach 1 can be adjusted according to boring aperture size, enhance anchor pole pair
The adaptability of aperture difference；After anchor pole pierces drilling, under the squeezing action of anchor pole axial thrust, the symmetrical insertion of breach 1 drilling
Deep wall rock deforms expansion, is bonded with drilling deep bottom hole country rock jam-packed, and fixing anchor bar front end makes it be not easy to loosen,
Anchor pole stability is improved, anchoring property is enhanced.
The novel durable magnetizes anchor pole, and taper retainer nut 3 and anchor rod body nose threads section 20 form screw pair
It realizes worm drive, the rotary motion of anchor rod body is changed into linear advancement along drilling axis direction, while by anchor pole
The axial thrust of the body of rod passes to taper end cap 2；3 wide end portion outer ring size of taper retainer nut is prevented swollen outer slightly larger than claw type elasticity
Outer ring size when bushing 4 opens, but slightly smaller than boring aperture, after anchor pole pierces drilling, 3 inlay bur hole depth of taper retainer nut
The coarse hole wall in portion matches the self-locking member for synthesizing worm drive with hole wall country rock；The material of anchor rod body nose threads section 20 can
The rigid materials such as 40Cr, 65Mn, T12,40WMn, 20CrMnTi are selected, need to be thermally treated, to improve its wearability, it is suitable for anchor
Bar heavy duty requirement；Steel or cast iron manufacture, inner hole casting bronze or babbit can be used in taper retainer nut 3, makes its wearability
Good, intensity is high, meets heavy load transmission；The internal screw thread of taper retainer nut 3 uses most common trapezoidal motion thread, inside and outside spiral shell
Line is with the conical surface close to being not easy to loosen, good manufacturability, root of the tooth intensity is high, to neutral good, be conducive to anchor pole and carry out supporting.
The novel durable magnetizes anchor pole, and claw type elasticity prevents swollen external bushing 4 by being threadably mounted at anchor rod body front end
It mainly include high-intensitive, elastomeric stalloy or other there is bullet made of some strength flexible metal on thread segment 20
Property blade tooth 4-1 and thin type connection screw thread circle 4-2, elastic blade tooth 4-1 arranges along thin type connection screw thread circle 4-2 mirror symmetry, can be with
It is connected by welding manner, and radially can realizes radial closing in elastic shrinkage, is magnetized the steel pipe 18 that cracks in elasticity and pierce
Before drilling, what steel pipe 18 was cracked in the limitation elasticity magnetization of the elastic force that is radially closed up by elastic blade tooth 4-1 is radially expanded expansion, into one
Radial dilatation occurs for step limitation spill spring ring 7, and elasticity magnetizes the steel pipe 18 that cracks and compressed, so that anchor pole pierces drilling, thin type
Connection screw thread circle 4-2 is mounted in anchor rod body nose threads section 20 by internal screw thread, and claw type may be implemented by worm drive
Elasticity prevents that swollen external bushing 4 is moved axially along anchor rod body nose threads section 20, the outer ring size outline of thin type connection screw thread circle 4-2
Less than 3 wide end portion outer ring size of taper retainer nut, claw type elasticity prevents swollen external bushing 4 and anchor pole bar after piercing drilling so as to anchor pole
Body nose threads section 20 promotes drilling deep axially together, so that discharging elasticity magnetizes the steel pipe 18 that cracks, elastic blade tooth 4-1 is received
Anchor rod body nose threads section 20 is held in contracting tightly, in the effect of the radial force of spill spring 7, magnetic force and several wedge block radial dilatations
Under, elasticity magnetization Kaifeng steel pipe 18 is radially expanded expansion, with borehole wall jam-packed.
The novel durable magnetizes anchor pole, and forward taper circle 5 and end cone circle 16 are welded on anchor rod body 19, preceding
Portion's taper ring 5 is welded on the rear portion (lower part) of anchor rod body front threads section 20, and end cone circle 16 is welded on anchor rod body tail
The front (top) of portion's thread segment 8, slides axially to limit spill spring ring 7 along anchor pole rod piece 19, and with anchor pole bar
The axial of body 19 promotes, and forward taper circle 5 may be implemented spill spring ring 7 and be compressed axially along anchor pole rod piece 19, in anchor pole to enclosing
After rock drilling applies pretightning force, the spill spring ring 7 in the state that is compressed axially can extend bolt pretension to the work of country rock
With the time, the durability of anchor pole is improved.
The novel durable magnetizes anchor pole, and spill spring ring 7 selects silicon-manganese spring steel (such as 60Si2MnA or 60Si2Mn)
It is processed into, is similar to rolled products of ordinary high-strength, elastomeric damping spring in the axial direction, has concave curve face 7- in radial design
1, it radially, axially can be compressed to store elastic energy, before anchor pole pierces drilling, spill spring ring 7 is axial in original
State, concave curve face 7-1 are in compressive state in advance, and the initial diameter of spill spring ring 7 is straight slightly larger than anchor rod body 19
Diameter, the interstitial hole across spill spring ring 7 are directly installed on anchor rod body 19, and elasticity magnetization is close on the outside of spill spring ring 7
Crack the inner ring of steel pipe 18, and other several spill spring rings installations and the mechanism of action are similar.
The novel durable magnetizes anchor pole, and wedge-type expansion block 17 includes the upper wedge block being welded on anchor rod body 19
17-2 magnetizes the two groups of wedge-shaped elements of lower wedge block 17-1 for the steel pipe inner ring that cracks, after anchor pole pierces drilling, bullet with elasticity is welded on
Property magnetization crack the expanse under the radical elasticity effect of magnetic force and spill spring ring 7 of steel pipe 18, with borehole wall jam-packed, weldering
Connect elasticity magnetization crack steel pipe inner ring lower wedge block 17-1 it is motionless, be welded on upper wedge block 17-2 on anchor rod body 19 with
Anchor rod body 19 promotes along drilling deep and is bonded jam-packed with lower wedge block 17-1, magnetizes the steel pipe 18 that cracks to elasticity and applies additionally more
Add stable radial expansion force, other several wedge-type expansion blocks installations and the mechanism of action are identical.
The novel durable magnetizes anchor pole, and rubber bushing 15 made of rubber is mounted on anchor rod body tailing screw flight
On, the internal screw thread of rubber bushing is matched with anchor rod body tailing screw flight section 8, allows rubber bushing 15 along anchor rod body tail
Portion's thread segment 8 moves axially, and after rubber bushing installs, outer ring and arch tray 14 and borehole wall jam-packed, inside are packed tightly
It is bonded anchor rod body tailing screw flight section 8, drilling, arch tray 14 and anchor rod body tailing screw flight section 8 can either be passed through rubber
Since bushing 15 connects, and the transmitting of load between three can be effectively mitigated, prevent from shaking in anchor rod body Bracing Process acute
Strong, the pressure after weakening surrouding rock deformation thickeies the shadow of nut retention mechanism 13,12 and anchor rod body 19 to arch tray 14, to top
It rings, plays a protective role to coupled element, and drilling orifice can also be sealed, effectively reduce anchor pole exposure
Product avoids anchor pole fatigue damage and corrosion, extends the anchor pole service life, enhances anchor rod strength.
The novel durable magnetizes anchor pole, and the arch tray 14 being processed by steel plate is coupled with rubber bushing 15
In anchor rod body tailing screw flight section 8, applies torque by thickening nut retention mechanism 13,12 to top, compress arch tray 14
Pretightning force is provided to anchor pole, arch tray 14 has certain area, is conducive to the diffusion of anchor rod prestress, expands bolt action
Range, load acts on arch tray 14 after surrouding rock deformation, transfers loads to anchor rod body 19 by arch tray 14, increases
Suspension roof support resistance realizes that country rock is firm.
The novel durable magnetizes anchor pole, is equipped among thickening fastening nut (dextrorotation) 13 and arch tray 14 flat
Flat shape anti-attrition washer 9 annular in shape, for protecting the surface of arch tray 14 not by the scratch for thickening fastening nut (dextrorotation) 13,
Dispersion thickeies the pressure of fastening nut (dextrorotation) 13 pairs of arch trays 14, and can make to contact between element closer.
The novel durable magnetizes anchor pole, thickeies nut retention mechanism by thickening fastening nut (dextrorotation) 13 to top and adds
Thick self-locking nut (left-handed) 10 forms, and by being threadably mounted in anchor rod body tailing screw flight section 8, it is (right to thicken fastening nut
Rotation) 13 with thicken after the installation of self-locking nut (left-handed) 10 pairs of tops tightens, make to screw between screw thread always by additional pressure with rub
Power effect is wiped, even if load has variation during suspension roof support, which is still had, and can more preferably meet suspension roof support heavy duty
Requirement, nut loosening causes anchor pole to fail in order to prevent, by thicken self-locking nut (left-handed) 10 one end non-circular closing in is made
Or radially close up 12 after cracking, after thickening self-locking nut (left-handed) 10 and tightening, close up 12 distendings, and using closing up, 12 elastic force makes
It screws and compresses between screw thread, structure is simple and locking reliable, for the ease of being applied by thickening nut retention mechanism to top to anchor pole
Biggish pretightning force and avoid the pressure after surrouding rock deformation that nut is caused to destroy, nut is all made of thickening nut.
Compared with the existing technology, the beneficial effects of the present invention are:
1. novel durable of the invention magnetizes anchor pole, apply the magnetic force of radical elasticity, anchor rod body by spill spring ring
And wedge-type expansion mechanism collective effect makes elasticity magnetize steel pipe expanse of cracking, elasticity magnetizes crack outer wall of steel pipe and country rock
Borehole wall jam-packed, the friction that biggish radial pressure can be applied to hole wall in length range immediately and country rock is prevented to glide
Power preferably makes country rock be in triaxial stress state, so that it is steady to further increase anchor pole in addition anchor pole arch tray holds towing tension
Gu the ability of rock stratum.
2. novel durable of the invention magnetizes anchor pole, design has taper retainer nut, with anchor rod body nose threads section group
Anchor rod body axial direction linear advancement is realized at screw pair, is matched with front, end cone circle and several wedge-type expansion blocks, altogether
It is compressed axially with realization spill spring ring along anchor rod body, after rockbolt installation supporting, axis of the spill spring ring along anchor rod body
Anchor rod prestress can be extended to the shoulder bed effects time to elastic force, enhance the durability of anchor pole.
3. novel durable of the invention magnetizes anchor pole, in anchor rod body nose threads section end, installation is provided with symmetrical breach
Taper end cap, can adjust the size of its symmetrical breach according to boring aperture size, enhancing anchor pole to the adaptability of aperture difference,
After anchor pole pierces drilling, under the action of anchor pole axial thrust, symmetrical breach insertion drilling deep wall rock deforms expansion,
It is bonded with drilling deep bottom hole country rock jam-packed, the common fixing anchor bar bar of rubber bushing with the installation of anchor rod body tailing screw flight section
Body prevents from shaking in anchor rod body Bracing Process acutely, reduces anchor pole fatigue damage, improve anchor pole stability, enhance anchoring
Energy.
4. novel durable of the invention magnetizes anchor pole, the rubber bushing of anchor rod body tailing screw flight section installation can will be bored
Hole, arch tray and anchor rod body are connected by elastic rubber bushing, and can effectively delay drilling, arch tray and anchor pole bar
The transmitting of load between body, the pressure after weakening surrouding rock deformation thicken nut retention mechanism and anchor pole bar to arch tray, to top
The influence of body can protect coupled element, and effectively reduce anchor pole exposed area, reduces anchor pole corrosion, extends anchor
The bar service life.
5. novel durable of the invention magnetizes anchor pole, anchor rod body tailing screw flight section, which is equipped with, thickeies nut fastening machine to top
Structure thickeies fastening nut (dextrorotation) and tightens with thickening self-locking nut (left-handed) to top installation, suspension roof support can be effectively prevented
Nut loosening caused by load variations in journey can more preferably meet the requirement of suspension roof support heavy duty, will thicken self-locking nut (left-handed)
One end is made non-circular closing in or radially closes up after cracking, and after thickening self-locking nut (left-handed) is tightened, closing in distending utilizes receipts
Mouthful elastic force make to screw screw thread between compress, structure is simple and locking reliable, and nut is all made of thickening nut, is more advantageous to by right
Top thickeies nut retention mechanism and applies biggish pretightning force to anchor pole and avoid the pressure after surrouding rock deformation that nut is caused to destroy, and makes
Suspension roof support is relatively reliable.
6. novel durable of the invention magnetizes anchor pole, manufacturing process is simple, and easy for installation, supporting is reliable, low in cost.
Detailed description of the invention
Novel durable Fig. 1 of the invention magnetizes anchor pole entirety sectional arrangement drawing
Cross-sectional view when novel durable magnetization rockbolt installation Fig. 2 of the invention is in drilling
Wedge-type expansion block partial enlarged view Fig. 3 of the invention
Tailing screw flight section component Fig. 4 of the invention installs partial enlarged view
Fig. 5 is of the invention to thicken nut retention mechanism locking principle figure to top
Claw type elasticity Fig. 6 of the invention prevents swollen external bushing figure
Claw type elasticity Fig. 7 of the invention prevents that swollen external bushing prevents swollen installation schematic diagram
Spill spring ring Fig. 8 of the invention installs cross-sectional view
Elasticity Fig. 9 of the invention magnetizes the steel pipe stress extension Principle figure that cracks
The symmetrical breach 2- taper end cap 3- taper retainer nut 4- claw type elasticity of 1- prevents swollen external bushing in the figure
The longitudinal direction 5- forward taper circle 6- pipe seam 7- spill spring ring 8- anchor rod body tailing screw flight section 9- anti-attrition washer
10- thickeies self-locking nut (left-handed) 11- nut thickened area 12- self-locking nut radial direction closing in 13- and thickeies fastening nut
The magnetization of (dextrorotation) 14- arch tray 15- rubber bushing 16- end cone circle 17- wedge-type expansion block 18- elasticity is opened
Stitch steel pipe 19- anchor rod body 20- anchor rod body nose threads section
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
Working principle: the taper end cap 2 for being provided with symmetrical breach pierces anchor rod body in drilling as guide element, works as cone
In wide end portion, depths, the inlay bur hole country rock of shape retainer nut 3, screw pair is constituted with anchor rod body nose threads section 20, by anchor pole
The rotary motion of the body of rod 19 is changed into the axial advancing movement of drilling, thus drive claw type elasticity prevent swollen external bushing 4 together with anchor pole
Lever front end thread segment 20 is promoted to the deep that drills, and symmetrical elastic blade tooth 4-1 is detached from, release elasticity magnetizes the steel pipe that cracks
18, while elastic blade tooth 4-1 radial contraction holds fitting anchor rod body nose threads section 20 tightly, in the magnetic force, recessed of anchor rod body 19
Longitudinal pipe seam 6 that elasticity magnetizes the steel pipe 18 that cracks under the action of the concave curve face 7-1 radical elasticity of shape spring ring 7 starts to expand
, steel pipe 18 and borehole wall jam-packed so that elasticity magnetization is cracked, as the axial direction of anchor rod body 19 promotes, upper wedge block 17-2
It is bonded to each other jam-packed with lower wedge block 17-1, the radial fitting jam-packed of several wedge-type expansion blocks 17 magnetizes the steel pipe that cracks for elasticity
18 apply additional more stable radial expansion force, so that elasticity magnetization is cracked, steel pipe 18 and borehole wall jam-packed are relatively reliable,
The rubber bushing 15 by being threadably mounted in anchor rod body tailing screw flight section 8 is rotated to seal drilling, passes through anchor rod body tail
Portion's thread segment 8 installs arch tray 14, anti-attrition washer 9, is connected through a screw thread successively installation and thickeies fastening nut (dextrorotation) 13, adds
Thick self-locking nut (left-handed) 10, and fastening nut (dextrorotation) 13, the thickening compression arch of self-locking nut (left-handed) 10 are thickeied by tightening
Shape pallet 14 to apply pretightning force to anchor rod body 19, and self-locking nut radial direction 12 distendings of closing in make to screw using the elastic force of closing in
It is compressed between screw thread, realizes nut anti-looseness, the axial of anchor rod body 19 promotes, and acts in forward taper circle 5, end cone circle 16
Under, spill spring ring 7 is in compressive state along the axial direction of anchor rod body 19, can extend bolt pretension using its axial direction elastic force
To the surrounding rock supporting time, anchor pole durability is improved.
Building block:
A kind of novel durable magnetization anchor pole includes: 2- taper end cap, and 3- taper retainer nut, 4- claw type elasticity is prevented swollen
External bushing 5- forward taper circle, 7- spill spring ring, 9- anti-attrition washer, 10- thicken self-locking nut (left-handed), and 13- thickeies
Fastening nut (dextrorotation), 14- arch tray, 15- rubber bushing, 16- end cone circle, 17- wedge-type expansion block, 18- bullet
Property magnetization crack steel pipe, 19- anchor rod body.
The course of work: as shown in Figure 1 and Figure 2, anchor pole is in surrounding rock supporting installation process, by the cone for being provided with symmetrical breach
Shape end cap 2 pierces anchor rod body in drilling as guide element, symmetrical breach 1 distending under the shoulder bed effects of drilling hole bottom, benefit
It is bonded with the elastic force of symmetrical breach 1 with drilling deep bottom hole country rock jam-packed, when the wide end portion inlay bur hole depth of taper retainer nut 3
Locate in country rock, constitutes screw pair with anchor rod body nose threads section 20, the rotary motion of anchor rod body 19 is changed into bore hole axis
To advancing movement, so that claw type elasticity be driven to prevent that swollen external bushing 4 is transported with anchor rod body nose threads section 20 to drilling deep together
Dynamic, symmetrical elastic blade tooth 4-1 is detached from, release elasticity magnetizes the steel pipe 18 that cracks, while elastic blade tooth 4-1 radial contraction is embraced
Tight anchor rod body nose threads section 20, in the magnetic force of anchor rod body 19, the concave curve face 7-1 radical elasticity of spill spring ring 7
Under the action of crack longitudinal pipe seam 6 of steel pipe 18 of elasticity magnetization start to expand steel pipe 18 and drilling hole so that elasticity magnetization is cracked
Wall jam-packed, as the axial direction of anchor rod body 19 promotes, upper wedge block 17-2 and lower wedge block 17-1 are bonded to each other jam-packed, several
Wedge-type expansion block 17 is radially expanded expansion, magnetizes the steel pipe 18 that cracks for elasticity and applies additional more stable radial dilatation
Power, so that elasticity magnetization is cracked, steel pipe 18 and borehole wall jam-packed are relatively reliable, and rotation rubber bushing 15 drills to seal, and passes through
Anchor rod body tailing screw flight section 8 installs arch tray 14, anti-attrition washer 9, is connected through a screw thread successively installation and thickeies fastening nut
(dextrorotation) 13 thickeies self-locking nut (left-handed) 10, and thickeies fastening nut (dextrorotation) 13, a thickening self-locking nut (left side by tightening
Rotation) 10 compression arch trays 14 come give anchor rod body 19 apply pretightning force, self-locking nut radially close up 12 distendings, utilize closing in
Elastic force compresses between making to screw screw thread, realizes nut anti-looseness, the axial of anchor rod body 19 promotes, in forward taper circle 5, end cone
Under 16 effect of circle, spill spring ring 7 is in compressive state along the axial direction of anchor rod body 19, can extend anchor using its axial direction elastic force
Bar pretightning force improves anchor pole durability to the surrounding rock supporting time.
The structure and function of taper end cap: as shown in Figure 1,2 planform of taper end cap is taper or is similar to taper,
There are symmetrical breaches 1 in narrow end portion, are socketed in the end head of anchor rod body nose threads section 20, taper end cap 2 can be according to drilling
Pore size adjusts the size of its symmetrical breach 1, enhances anchor pole to the adaptability of aperture difference, pierces country rock to guide anchor pole
Drilling；As shown in Fig. 2, after anchor pole pierces drilling, under the action of anchor pole axial thrust, the symmetrical insertion of breach 1 drilling deep
Country rock deforms expansion, be bonded with drilling deep bottom hole country rock jam-packed, and fixing anchor bar front end makes it be not easy to loosen, raising
Anchor pole stability enhances the anchoring property of anchor pole.
Structure, function and the material of taper retainer nut: as shown in Fig. 2, taper retainer nut 3 and anchor rod body front end spiral shell
Line section 20 forms screw pair and the rotary motion of anchor rod body is changed into along drilling axis direction linear advancement, and transmitting thrust is given
Taper end cap 2；Outer ring size when its wide end portion outer ring size prevents that swollen external bushing 4 opens slightly larger than claw type elasticity, but slightly smaller than
Boring aperture, after anchor pole pierces drilling, the 3 coarse hole wall in inlay bur hole deep of taper retainer nut becomes the self-locking of worm drive
Component；The rigid materials such as 40Cr, 65Mn, T12,40WMn, 20CrMnTi can be selected in the material of anchor rod body nose threads section 20,
Need to be thermally treated, to improve its wearability, it is suitable for anchor pole heavy duty requirement；Steel or cast iron manufacture can be used in taper retainer nut 3,
Inner hole casting bronze or babbit, keep its wearability good, and intensity is high, meet heavy load transmission；The internal screw thread of taper retainer nut 3
Using most common trapezoidal motion thread, internal and external screw thread is with the conical surface close to being not easy to loosen, good manufacturability, root of the tooth intensity is high, right
It is neutral good, be conducive to anchor pole and carry out supporting.
Claw type elasticity prevents the structure and function of swollen external bushing: as shown in fig. 6, claw type elasticity prevents that swollen external bushing 4 mainly includes
High-intensitive, elastomeric stalloy or other there is elasticity blade tooth 4-1 made of some strength flexible metal to connect with thin type
The fillet of screw 4-2, elastic blade tooth 4-1 are arranged along thin type connection screw thread circle 4-2 mirror symmetry, can be connected by welding manner,
And radially radial close up can be realized with elastic shrinkage；As shown in fig. 7, cracking before steel pipe 18 pierces drilling in elasticity magnetization, lead to
That crosses that the elastic force limitation elasticity magnetization that elasticity blade tooth 4-1 radially closes up cracks steel pipe 18 is radially expanded expansion, so that anchor pole pierces
Drilling, thin type connection screw thread circle 4-2 are mounted in anchor rod body nose threads section 20 by internal screw thread, as shown in Fig. 2, thin type connects
The outer ring size outline for meeting fillet of screw 4-2 is less than 3 wide end portion outer ring size of taper retainer nut, so that claw type elasticity prevents swollen outer lining
Set 4 promotes drilling deep with anchor rod body axially together, so that discharging elasticity magnetizes the steel pipe 18 that cracks, elastic blade tooth 4-1 is received
Anchor rod body is held in contracting tightly；As shown in figure 9, under the action of radial expansion force, elasticity magnetization Kaifeng 18 expanse of steel pipe, with brill
Hole hole wall jam-packed.
The structure and function of forward taper circle, end cone circle: as shown in Fig. 2, Fig. 7, forward taper circle 5 and end cone
Circle 16 is welded on anchor rod body 19, and forward taper circle 5 is welded on the rear portion (lower part) of anchor rod body front threads section 20, tail portion
Taper ring 16 is welded on the front (top) of anchor rod body tailing screw flight section 8, to limit spill spring ring 7 along anchor pole rod piece 19
It slides axially, and as the axial direction of anchor rod body 19 promotes, spill spring ring 7 may be implemented along the axial pressure of anchor pole rod piece 19
Contracting, after anchor pole applies pretightning force to wall rock drill-hole, the spill spring ring 7 in the state that is compressed axially can extend anchor pole preload
Power improves the durability of anchor pole to the action time of country rock.
Structure, function and the material of spill spring ring: as shown in figure 8, spill spring ring 7 selects silicon-manganese spring steel (such as
60Si2MnA or 60Si2Mn) it is processed into, it is similar to rolled products of ordinary high-strength, elastomeric damping spring in the axial direction, in radial direction
Design has concave curve face 7-1, radially, axially can be compressed to store elastic energy；As shown in Fig. 3, Fig. 7, bored in anchor pole
Before entering drilling, spill spring ring 7 is axial in a state of nature, and concave curve face 7-1 is in compressive state, initial diameter in advance
It slightly larger than the diameter of anchor rod body 19, is directly installed on anchor rod body 19 across interstitial hole, is close to bullet on the outside of spill spring ring 7
Property magnetization crack the inner ring of steel pipe 18, to make the elasticity magnetization steel pipe 18 that cracks expand expansion.
The structure and function of wedge-type expansion block: as shown in figure 3, wedge-type expansion block 17 includes being welded on anchor rod body 19
Upper wedge block 17-2 magnetizes the two groups of wedge-shaped elements of lower wedge block 17-1 for the steel pipe inner ring that cracks with elasticity is welded on；As shown in Fig. 2,
After anchor pole pierces drilling, elasticity magnetizes the expanse under the effect of the radical elasticity of magnetic force and spill spring ring 7 of steel pipe 18 of cracking,
With borehole wall jam-packed, be welded on elasticity magnetization crack steel pipe inner ring lower wedge block 17-1 it is motionless, upper wedge block 17-2 is with anchor
Club shaft 19 promotes along drilling deep and is bonded jam-packed with lower wedge block 17-1, magnetizes the steel pipe 18 that cracks to elasticity and applies additionally more
Stable radial expansion force.
Elasticity magnetization is cracked the structure and function of steel pipe: as shown in figure 3, elasticity magnetization is cracked steel pipe 18 be expansion member by
Sheet metal rolls, and so that it is had identical magnetism with anchor rod body 19 after magnetization treatment is carried out to it, exists therebetween
Opposing magnetic force；As shown in fig. 7, elasticity magnetization is cracked is prevented the limitation of swollen external bushing 4, bullet by claw type elasticity before steel pipe 18 is expanded
Property crack longitudinal pipe seam 6 of steel pipe of magnetization be in compressive state；As shown in Fig. 2, Fig. 9, after anchor pole pierces drilling, elasticity magnetization is opened
Stitch 18 expanse of steel pipe, outer wall and borehole wall jam-packed.
The structure and function of anti-attrition washer: as shown in figure 5, thickening among fastening nut (dextrorotation) 13 and arch tray 14
It is equipped in the cricoid anti-attrition washer 9 of pancake, for protecting the surface of arch tray 14 not by thickening fastening nut (dextrorotation)
13 scratch, dispersion thicken the pressure of fastening nut (dextrorotation) 13 pairs of arch trays 14, and can make to contact between element tighter
It is close.
The structure and function of arch tray: as shown in Fig. 2, the arch tray 14 being processed by steel plate is mounted on anchor pole bar
In body tailing screw flight section 8, applies torque by thickening nut retention mechanism 13,12 to top, compress arch tray 14 and mentioned to anchor pole
For pretightning force, arch tray 14 has certain area, is conducive to the diffusion of anchor rod prestress, expands bolt action range, encloses
Load acts on arch tray 14 after rock deformation, transfers loads to anchor rod body 19 by it, increases suspension roof support resistance, real
Existing country rock is firm.
The structure and function of rubber bushing: as shown in Fig. 2, Fig. 5, rubber bushing 15 made of rubber is mounted on anchor pole bar
On body tailing screw flight, outer ring and arch tray 14 and borehole wall jam-packed, inside pack tightly fitting anchor rod body tailing screw flight section
8, the transmitting of load between three can be effectively mitigated, prevents from shaking in anchor rod body Bracing Process acutely, weakens surrouding rock deformation
Pressure afterwards thickeies the influence of nut retention mechanism 13,12 and anchor rod body 19 to arch tray 14, to top, to coupled
Element play a protective role, and drilling orifice can also be sealed, effectively reduce anchor pole exposed area, anchor pole fatigue is avoided to damage
Corrosion is injured, the anchor pole service life is extended, enhances anchor rod strength.
The structure and function of nut retention mechanism is thickeied to top: as shown in figure 4, thickening nut retention mechanism by thickening to top
Fastening nut (dextrorotation) 13 and thickening self-locking nut (left-handed) 10 form, by being threadably mounted at anchor rod body tailing screw flight section
On 8, top installation is tightened and is acted on always by additional pressure and frictional force making to screw screw thread, even if during suspension roof support
Load has variation, which still has, and can more preferably meet the requirement of suspension roof support heavy duty, as shown in figure 5, spiral shell in order to prevent
Mother, which loosens, causes anchor pole to fail, and will thicken self-locking nut (left-handed) 10 one end and non-circular closing in is made or radially closes up after cracking
12, after thickening self-locking nut (left-handed) 10 and tightening, close up 12 distendings, using close up 12 elastic force make to screw screw thread between compress,
Structure is simple and locking reliable, and the pressure after avoiding surrouding rock deformation causes nut to destroy, and nut is all made of thickening nut.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, any engineers and technicians for being familiar with this field are to this hair
The various changes and improvements that bright technical solution is made, such as anchor rod body form, component material and quantity should all fall into this
In the protection scope that invention claims determine.
Claims (8)
1. a kind of durable magnetization anchor pole, the durable magnetization anchor pole realizes that country rock is steady for making country rock be in triaxial stress state
Gu specifically including that
1. indulging the anchor rod body that muscle screw-thread steel is processed by left-handed nothing, the anchor rod body is machined with nose threads section and tail portion
Thread segment；
2. covering the taper end cap for being provided with symmetrical breach in anchor rod body front end, pierced in country rock face to guide anchor rod body
Drilling installed；
3. taper retainer nut realizes that anchor rod body is axially promoted with screw pair is combined into anchor rod body nose threads and is driven
It is required that；
4. claw type elasticity prevents swollen external bushing, the elastic steel pipe that cracks that magnetizes is radially expanded expansion before preventing anchor rod body from piercing drilling
, magnetize the steel pipe that cracks using the contraction power limit elasticity between symmetrical elastic blade tooth and radially expands expansion；
5. the spill spring ring being mounted on anchor rod body, axially being pushed by anchor rod body makes spill spring ring along anchor rod body
It is axially in compressive state, and wedge-shaped block structure cooperation, so that elasticity is magnetized the steel pipe that cracks jointly using elastic force, magnetic force and expansionary force
It is radially expanded expansion, the frictional force that radial pressure is effectively applied to the hole wall of country rock face internal drilling and country rock is prevented to glide；6. by
The magnetization of elasticity made of high resiliency, high-strength steel sheet roll cracks steel pipe for expansion member, and overall length cracks along longitudinal direction, cracks
Width is 10~15mm, and inside is welded with several wedge blocks matched with anchor rod body, is axially pushed away by anchor rod body
Into elasticity, which magnetizes the steel pipe that cracks, may be implemented expanse under wedge block machinery fitting effect；
7. the mating rubber bushing being mounted on anchor rod body tailing screw flight, arch tray, antifriction washer, and spiral shell is thickeied to top
Female retention mechanism applies pretightning force to top thickening nut retention mechanism by tightening to compress arch tray.
2. a kind of durable magnetization anchor pole according to claim 1, it is characterised in that:
1. durable magnetization anchor rod body is indulged muscle screw-thread steel by left-handed nothing and is processed into, anchor rod body carries out magnetization treatment in advance, makes
It has magnetism；
2. elasticity magnetization is cracked, steel pipe is rolled by high resiliency, high-intensitive sheet metal, and it is preparatory that elasticity magnetizes the steel pipe that cracks
Magnetization treatment is carried out, it is made to have magnetism；
Steel pipe magnetism having the same after magnetization treatment 3. durable magnetization anchor rod body and elasticity magnetization are cracked, therebetween
Has the magnetic force to repel each other；
4. elasticity magnetization is cracked, steel pipe is mating to be mounted on anchor rod body；
Caliber 5. elasticity magnetization is cracked when steel pipe contraction state will be slightly larger than the radial dimension of anchor rod body.
3. a kind of durable magnetization anchor pole according to claim 1, it is characterised in that:
1. taper retainer nut is processed into taper, to install；
2. the size of the big end of its taper of taper retainer nut should prevent size when swollen external bushing opens slightly larger than claw type elasticity, with
Just in the hole wall country rock of taper retainer nut big end inlay bur hole deep, the self-locking structure of worm drive is complemented each other to form.
4. a kind of durable magnetization anchor pole according to claim 1, it is characterised in that:
Claw type elasticity prevents that the receivable patch elasticity that tightens of swollen external bushing its symmetrical each blade tooth before anchor pole is not installed magnetizes the steel pipe that cracks
Outer surface, symmetrically the elastic contractile force between each blade tooth prevents elasticity from magnetizing steel pipe expanse of cracking.
5. a kind of durable magnetization anchor pole according to claim 1, it is characterised in that:
1. spill spring ring is mounted on anchor rod body, and spill spring ring is machined with concave structure, and spring ring can be made preparatory
In radial compression；
2. spill spring ring can apply additional radial pressure to it after steel pipe expanse is cracked in elasticity magnetization.
6. a kind of durable magnetization anchor pole according to any one of claims 1 to 5, it is characterised in that:
1. anchor rod body interlude is axially welded with several wedge blocks, elasticity magnetization crack be welded on steel pipe medial surface it is several
A wedge block；
The wedge block one welded on steel pipe medial surface 2. the wedge block that anchor rod body interlude axially welds and elasticity magnetization are cracked
One corresponds to each other, contrary, cooperatively forms wedge-shaped radial dilatation structure.
7. a kind of durable magnetization anchor pole according to claim 1, it is characterised in that:
1. rubber bushing is mounted on anchor rod body tailing screw flight and with borehole wall jam-packed, anchor rod body when preventing suspension roof support
It shakes, stablizes anchoring property；
2. rubber bushing can be sealed wall rock drill-hole, anchor rod body corrosion is weakened；
3. rubber bushing can effectively weaken the pressure after surrouding rock deformation, to anchor rod body tail portion arch tray, to pushing up, thickening nut is tight
Gu damaging caused by mechanism, the anchor pole service life is extended.
8. a kind of durable magnetization anchor pole according to claim 1, it is characterised in that:
Arch tray is mounted on anchor rod body tail portion, thickeies the torque that nut applies to top and arch tray is compressed to provide to anchor pole
Prestressing force, arch tray can be such that prestressing force spreads, and expand bolt action range, and the supporting force of arch tray makes at country rock
In triaxial stress state, increase anchor pole working resistance, firm ground.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU201282U1 (en) * | 2020-06-26 | 2020-12-09 | Общество с ограниченной ответственностью "ДСИ Техно" (ООО "ДСИ Техно") | ROD ANCHORED DYNAMIC |
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