CN103244159B - A kind of method and device applying bolt pretension - Google Patents
A kind of method and device applying bolt pretension Download PDFInfo
- Publication number
- CN103244159B CN103244159B CN201310173331.0A CN201310173331A CN103244159B CN 103244159 B CN103244159 B CN 103244159B CN 201310173331 A CN201310173331 A CN 201310173331A CN 103244159 B CN103244159 B CN 103244159B
- Authority
- CN
- China
- Prior art keywords
- anchor pole
- nut
- annular cylinder
- supporter
- pallet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 7
- 230000008093 supporting effect Effects 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012089 stop solution Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000002360 explosive Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Apply method and the device of bolt pretension, be applicable to general tunnel, supporting roadway surrounding rock engineering.When applying bolt pretension, first going out armature boring with drilling machine construction, in boring, filling in resin explosive roll and anchor pole successively, and overlap pallet and nut in the outer section of anchor pole; Air rock drill drives anchor pole to rotate with crushing stick, and waits for that powder stick solidifies generation intensity; Hydraulic stretching device is installed; Primer fluid compressing cylinder, applies stretch-draw pretightning force to anchor pole, contacts with the unsettled nut of spanner precession with pallet; Reduce hydraulic jack pressure to zero, remove hydraulic tensioner.Anchor pole pretension can not only be made to construct and to reach designing requirement easily, and the applying method changing bolt pretension is by the transfer process of traditional moment of torsion force of periphery to axle power, decrease the requirement to material quality of bolt, avoid the damage to anchor pole, improve efficiency of construction.
Description
Technical field
The present invention relates to a kind of method and the device that apply bolt pretension, be particularly useful for the bolt support technology generally used of ground, roadway, construction of tunnel.
Background technology
In the field such as underground construction and slope project, bolt support is most widely used reinforcing technique.Because different depth rock mass self-characteristic around tunnel and residing ambient stress difference easily produce Incoordinate deformation, prevent from causing supporting to be lost efficacy because surrouding rock deformation causes nut loosening so anchor pole needs to carry out pretension with nut to anchor pole in use.Anchor rod prestress, on the impact of supporting effect of roadway, mainly contains following 3 points: 1. award rock mass enough normal pressures during skyhook, stops crack and slide and the reduction of country rock.2. utilize prestressing force to the constraint of rock-mass relaxing and weakening, delay the reduction with containment Surrounding Rock Strength, control the process that country rock breaks, play country rock self-bearing capacity.3. increase rock mass confined pressure, effectively change the stress state of country rock, improve by the mechanical property of Bolted Rock Masses, increase by the intensity of Bolted Rock Masses.
Also there is no the facility of Special applying bolt pretension at present, generally rely on the moment of torsion of torque wrench or jumbolter applying and return the pretightning force calculated and apply.Its general principle realizes the conversion of the force of periphery to axle power by the angle of nut and anchor pole rolled thread section screw thread, but when anchor pole rolled thread the section coarse or nut of processing and pallet frictional force larger time, the axial tension of anchor pole effectively can not be converted into the moment of torsion of nut applying, cause the pretightning force of rockbolt installation to be had a greatly reduced quality, the pretightning force of setting cannot be reached; If apply pretightning force with jumbolter, because rig is that the pulsed moment of torsion relying on pressure wind or hydraulic-driven to produce carries out tensioning, the infringement that impact force produces anchor pole is larger.The pretightning force of anchor pole setting simultaneously can not be excessive, when the pretightning force applied exceedes design parameters, waste not only can be caused also to damage anchor pole.Therefore, in the work progress of bolt support, be badly in need of a kind of method of accurate applying pretightning force.
Summary of the invention
Technical scheme: the object of the invention is to overcome deficiency in prior art it, method and the device of the applying bolt pretension that a kind of structure is simple, easy and simple to handle, result of use is good are provided.
Technical scheme: the method for applying bolt pretension of the present invention, comprises the following steps:
The first step, boring: go out armature boring with drilling machine construction, water remaining in cleaning eye and slag, fill in Anchor Agent and anchor pole successively in boring, and in anchor pole revealed section cover top tray, nut precession anchor pole rolled thread section contacted with pallet with hand;
Second step, skyhook: air rock drill is connected with nut, rotating nut also drives anchor pole to rotate to stir Anchor Agent, after waiting for that Anchor Agent solidifies, unloads air rock drill;
3rd step, skyhook pretightning force device: the shell of bolt pretension device is leaned on pallet, in anchor pole front end, nut is puted forth effort in precession one again, fastened by the slide bar pulling claw of bolt pretension device and put forth effort nut, and pulling claw is locked by the ring that is tightened forward;
4th step, apply pretightning force: open fluid pressure drive device, annular cylinder is protruding by oil liquid pressure band moving slide-bar, by pulling claw, stretch-draw pretightning force is applied to anchor pole, observe pressure meter, after manometric pressure reaches setting value, stop solution hydraulic driver, then contacts with pallet with spanner tightening nut;
5th step, reduces the pressure to zero of annular cylinder, loosens retainer ring backward, and remove pulling claw constraint, and take off bolt pretension device, that finally unloads anchor pole outer end puts forth effort nut.
Realize the applying bolt pretension device of said method, comprise fluid pressure drive device, also comprise shell, slide bar, supporter, annular cylinder, the front end of described shell is provided with 3 supporting legs, the rear end of shell sets gradually supporter and the annular cylinder with supporter tabling, shell is provided with the slide bar that afterbody passes supporter and annular cylinder, the front end of slide bar is provided with the retainer ring of pulling claw and fixing pulling claw, the outer wall of supporter is provided with the passage being communicated with annular cylinder, passway is connecting fluid hydraulic driver by the road, the export pipeline of fluid pressure drive device is provided with pressure meter, fluid is entered in annular cylinder cavity by the pipeline in supporter.
Beneficial effect: the present invention can apply accurate pretightning force to general bolt support, change bolt pretension by the applying of traditional moment of torsion force of periphery to the transfer process of axle power, decrease the requirement to material quality of bolt, avoid the damage to anchor pole, improve efficiency of construction.Use hydraulic jack directly to apply pretightning force by slide block, the accurate applying of pretightning force can be realized, anchor pole pretension can not only be made to construct and reach designing requirement easily, but also the waste that the pretightning force that causes because artificially constructing can not be caused excessive.Oil cylinder structure of hydraulic is simple, and size is less, is adapted at down-hole small space and uses.Principle of the present invention is simple, and work progress easily operates, and the implement structure of use is simple, convenient disassembly, for ease of maintenaince, and can reuse, and cost is lower, has very strong practicality.
Accompanying drawing explanation
Fig. 1 is pretightning force loading system structural representation of the present invention,
Fig. 2 is the A-A cross-sectional view of Fig. 1.
In figure: 1-Anchor Agent, 2-anchor pole, 3-pallet, 4-nut, 5-puts forth effort nut, 6-pulling claw, 7-retainer ring, 8-slide bar, 9-shell, 10-supporter, 11-annular cylinder, 12-fluid pressure drive device, 13-pressure meter.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
The method of applying bolt pretension of the present invention: with cleaning out water remaining in hole and slag behind the good hole of pneumatic drilling machine drill, filling in Anchor Agent 1 and anchor pole 2 in boring, and installing pallet 3, with hand, nut 4 precession anchor pole rolled thread section being contacted with pallet 3; Air rock drill is connected with nut 4, rotates anchor pole 2 with low-power and stir Anchor Agent 1, after Anchor Agent 1 solidifies, unload air rock drill; Before anchor pole, in 15mm, nut 5 is puted forth effort in precession one again, and tensioner shell 9 is withstood pallet 3, and the pulling claw 6 of slide bar 8 fastens puts forth effort nut 5, and pulling claw 6 is locked by driven forward retainer ring 7; Primer fluid hydraulic driver 12, fluid enters the cavity between annular cylinder 11 and supporter 10, and annular cylinder 11 stretches out under oil pressure effect, pushes the pedestal of slide bar 8, when closing fluid pressure drive device 12 after the pretightning force size that the registration of pressure meter 13 reaches default; Slide bar 8 bounces back, and anchor pole 2 is driven by pulling claw 6 and stretches out crag vertically, and when pulling capacity is equal with oil liquid pressure, slide bar 8 stops retraction; The nut 4 being close to pallet 3 pulls out pallet 3 with outside anchor pole 2, then contacts with pallet 3 with spanner precession nut 4; Unclamp retainer ring 7, open pulling claw 6, remove hydraulic stretching device, that finally unloads anchor pole 2 outer end puts forth effort nut 5.
Applying bolt pretension device of the present invention, comprise fluid pressure drive device 12, primarily of shell 9, slide bar 8, supporter 10, annular cylinder 11 is formed, the front end of described shell 9 is provided with 3 supporting legs, the rear end of shell 9 sets gradually supporter 10 and the annular cylinder 11 with supporter 10 tabling, shell 9 is provided with the slide bar 8 that afterbody passes supporter 10 and annular cylinder 11, the front end of slide bar 8 is provided with the retainer ring 7 of pulling claw 6 and fixing pulling claw 6, the outer wall of supporter 10 is provided with the passage being communicated with annular cylinder 11, passway is connecting fluid hydraulic driver 12 by the road, the export pipeline of fluid pressure drive device 12 is provided with pressure meter 13, fluid enters in annular cylinder 11 cavity by the pipeline in supporter 10, annular cylinder 11 is protruding by oil liquid pressure band moving slide-bar 8, thus generation axial tension.
Claims (2)
1. one kind applies the method for bolt pretension, comprise: go out armature boring with drilling machine construction, water remaining in cleaning eye and slag, Anchor Agent (1) and anchor pole (2) is filled in successively in boring, and at anchor pole (2) revealed section cover top tray (3), with hand, nut (4) precession anchor pole (2) rolled thread section is contacted with pallet (3); Be connected with nut (4) by air rock drill, rotating nut (4) also drives anchor pole (2) to rotate to stir Anchor Agent (1), after waiting for that Anchor Agent (1) solidifies, unloads air rock drill; In anchor pole (2) front end 15mm, nut (5) is puted forth effort in precession one again, the shell (9) of bolt pretension device is leaned on pallet (3), the pulling claw (6) of the slide bar (8) of bolt pretension device is fastened and puts forth effort nut (5), and pulling claw (6) is locked by the ring (7) that is tightened forward; It is characterized in that:
Pretightning force is applied by opening fluid pressure drive device (12), fluid enters the cavity between annular cylinder (11) and supporter (10), annular cylinder (11) is protruding by the zone of action moving slide-bar (8) of oil liquid pressure, by pulling claw (6), stretch-draw pretightning force is applied to anchor pole (2), observe pressure meter (13), after the pressure of pressure meter (13) reaches setting value, stop solution hydraulic driver (12), slide bar (8) bounces back, anchor pole (2) is driven by pulling claw (6) and stretches out crag vertically, when pulling capacity is equal with oil liquid pressure, slide bar (8) stops retraction, the nut (4) being close to pallet (3) pulls out pallet (3) with outside anchor pole (2), then uses spanner tightening nut (4) to contact with pallet (3), reduce the pressure to zero of annular cylinder (11), loosen retainer ring (7) backward, remove pulling claw (6) constraint, and take off bolt pretension device, that finally unloads anchor pole (2) outer end puts forth effort nut (5).
2. one kind realizes the applying bolt pretension device of method described in claim 1, comprise fluid pressure drive device (12), it is characterized in that: also comprise shell (9), slide bar (8), supporter (10), annular cylinder (11), the front end of described shell (9) is provided with 3 supporting legs, the rear end of shell (9) sets gradually supporter (10) and the annular cylinder (11) with supporter (10) tabling, shell (9) is provided with the slide bar (8) that afterbody passes supporter (10) and annular cylinder (11), the front end of slide bar (8) is provided with the retainer ring (7) of pulling claw (6) and fixing pulling claw (6), the outer wall of supporter (10) is provided with the passage being communicated with annular cylinder (11), passway is connecting fluid hydraulic driver (12) by the road, the export pipeline of fluid pressure drive device (12) is provided with pressure meter (13), fluid enters in annular cylinder (11) cavity by the pipeline in supporter (10), annular cylinder (11) is protruding by oil liquid pressure band moving slide-bar (8), thus generation axial tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173331.0A CN103244159B (en) | 2013-05-13 | 2013-05-13 | A kind of method and device applying bolt pretension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173331.0A CN103244159B (en) | 2013-05-13 | 2013-05-13 | A kind of method and device applying bolt pretension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103244159A CN103244159A (en) | 2013-08-14 |
| CN103244159B true CN103244159B (en) | 2015-08-19 |
Family
ID=48924000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310173331.0A Active CN103244159B (en) | 2013-05-13 | 2013-05-13 | A kind of method and device applying bolt pretension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103244159B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573279B (en) * | 2013-11-14 | 2016-10-05 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
| CN103590843B (en) * | 2013-11-21 | 2015-10-21 | 山东大学 | A kind of full-thread bolt pretightning force bringing device and method of operating can moving back anchor fast |
| CN105370303B (en) * | 2015-11-26 | 2018-01-09 | 湖南科技大学 | Tensioning equipment and its operating method for deep tunnel high pre-stress suspension roof support |
| CN105548001B (en) * | 2016-01-23 | 2018-11-27 | 北京航空航天大学 | A kind of pipe-seam type anchor rod scene drawing force measuring device |
| CN107696267B (en) * | 2017-10-19 | 2024-02-27 | 中铁三局集团有限公司 | Tensioning reinforcing steel bar pre-tightening equipment for ballastless track plate of high-speed railway |
| CN108274613B (en) * | 2018-03-10 | 2022-08-23 | 山东高速轨道设备材料有限公司 | Tensioning combination mechanism |
| CN108327068B (en) * | 2018-03-10 | 2022-03-08 | 山东高速铁建装备有限公司 | Prestressed track slab steel bar stretching machine |
| CN108756966A (en) * | 2018-06-07 | 2018-11-06 | 湖南科技大学 | A kind of tensioning equipment suitable for underground construction defective anchor bar |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985797Y (en) * | 2006-07-28 | 2007-12-05 | 北京中煤矿山工程有限公司 | Anchor rod preloader |
| CN101634149B (en) * | 2009-08-05 | 2011-07-06 | 朱奎 | Prestressed anchor foundation pit support and construction method |
| DE102010024352A1 (en) * | 2010-06-18 | 2011-12-22 | Firep Rebar Technology Gmbh | Improved tie rod made of fiber-reinforced plastic |
| CN202148913U (en) * | 2011-07-28 | 2012-02-22 | 湖南科技大学 | Anchor rod pretightening device |
| CN203257441U (en) * | 2013-05-13 | 2013-10-30 | 中国矿业大学 | Device for accurately applying axial force on anchor rod |
-
2013
- 2013-05-13 CN CN201310173331.0A patent/CN103244159B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103244159A (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103244159B (en) | A kind of method and device applying bolt pretension | |
| US10794183B2 (en) | Self-drilling differential grouting combined bolt and anchoring method therefor | |
| CN105370303B (en) | Tensioning equipment and its operating method for deep tunnel high pre-stress suspension roof support | |
| AU2021271378B2 (en) | Water jet technology-based anchor cable self-drilling and rapid anchoring construction method | |
| CN103573279B (en) | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof | |
| CN204200253U (en) | Apply the device of bolt pretension | |
| CN103758552A (en) | Hole-expanding anchor rod and construction process thereof | |
| CN109853570B (en) | Sediment cleaning device at bottom of concrete bored concrete pile | |
| CN203230445U (en) | Length-changeable self-boring type grouting anchor rod | |
| CN207177942U (en) | A kind of multi-cylinder anchor rod hydraulic tensioning equipment | |
| CN107387140A (en) | A kind of multi-cylinder anchor rod hydraulic tensioning equipment and anchor pole method for stretching | |
| CN205135675U (en) | A tension device that is used for high prestressed anchorage pole in deep tunnel to strut | |
| CN219012666U (en) | Device for fastening anchor rod and applying prestress | |
| CN102635378A (en) | New process for high-strength resin anchor construction | |
| CN203257441U (en) | Device for accurately applying axial force on anchor rod | |
| AU2015201493A1 (en) | Self-drilling injection lance and method for ground stabilization using the said self-drilling injection lance. | |
| CN114876536A (en) | Anchor high-pretightening-force anchor rod and anchor cable combined supporting device and method | |
| CN101700649A (en) | Iron tower flange and foundation bolt securing device | |
| CN111119961B (en) | High-prestress applying device for anchor rod and using method | |
| CN201635750U (en) | Novel resin anchor-rod installer | |
| CN210660155U (en) | Grouting anchoring device and groutable solid anchor rod composed of same | |
| CN204311448U (en) | Apply bolt pretension device | |
| CN106401625A (en) | Drillable anchor rod device capable of being anchored in crossed mode and construction method | |
| CN106514542B (en) | A kind of Digital-display torque multiplier of adjustable amplification factor | |
| CN217841700U (en) | Anchor high pretightning force anchor bolt support device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |