CN103590843B - A kind of full-thread bolt pretightning force bringing device and method of operating can moving back anchor fast - Google Patents
A kind of full-thread bolt pretightning force bringing device and method of operating can moving back anchor fast Download PDFInfo
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- CN103590843B CN103590843B CN201310598078.3A CN201310598078A CN103590843B CN 103590843 B CN103590843 B CN 103590843B CN 201310598078 A CN201310598078 A CN 201310598078A CN 103590843 B CN103590843 B CN 103590843B
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Abstract
The present invention specifically discloses a kind of full-thread bolt pretightning force bringing device and the method for operating that can move back anchor fast, comprise preposition crossbeam, rearmounted crossbeam and realize to the clamping of anchor pole with unclamp move back anchor device, described preposition crossbeam and rearmounted crossbeam all can be connected by contracting formula oil cylinder pillar with two hydraulic pressure, and in the middle of preposition crossbeam, rearmounted crossbeam, be equipped with the hole passed for anchor pole, described preposition crossbeam and the pallet of anchor pole are fitted, for counter-force supports, pulling capacity can be provided to anchor pole by contracting formula oil cylinder pillar by two hydraulic pressure; Rearmounted crossbeam with move back anchor device and match; The centre of described rearmounted crossbeam with move back anchor device and match, described extension type oil cylinder pillar has pneumatic-hydraulic pump to drive, and pneumatic-hydraulic delivery side of pump connects a controller.To instant invention overcomes when tradition utilizes torque wrench or pneumatic impact wrench to apply pretightning force to full-thread bolt that moment of torsion transformation ratio is low, flight pitch is large and yielding and cause move back anchor difficulty, pretightning force applies difficulty and quantitatively cannot wait shortcoming.
Description
Technical field
The present invention relates to bolt support field, mine, particularly relate to a kind of full-thread bolt pretightning force bringing device and the method for operating that can move back anchor fast.
Background technology
Along with the development of national economy, national energy demand is increasing, and the exhaustion day by day of superficial part coal resources forces coal mining to proceed to deep.Under deep high-ground stress, High-geotemperature, high karst water pressure and strong mining influence condition, roadway support faces many challenges newly.Anchor pole occupies an important position in mine support system, in order to meet various actual demand, anchor pole performance, technique are also in continuous update, anchor pole type also emerges in an endless stream, and such as comprises common rod bolt, twisted bolt, twisted steel anchor rod with ribbing for anchor pole in mine tunnel engineering, without vertical muscle full-thread bolt, surrenders anchor pole, glass fibre reinforced plastics rockbolts, wood bolt, bamboo anchoring-bolt etc.
Anchor pole, by applying pretightning force, produces radial constraint to country rock, effectively can improve the stresses re-distribution condition of country rock, the self-bearing ability of country rock behind raising peak; Especially be in the tunnel of deep crush country rock, under " three high disturbances " influence factor, higher supporting requirement proposed to bolt pretension., in rockbolt installation and use procedure, also there is following problem in the end car silk commonly used for current deep tunnel supporting and the twisted steel anchor rod of end rolled thread muscle full-thread bolt vertical with nothing, urgently to be resolved hurrily:
1) at present mostly down-hole is to apply pretightning force by the mode of torque wrench or pneumatic impact wrench to anchor pole, but this kind of mode pretightning force to apply range lower, and there is the problem that moment of torsion transformation ratio cannot be quantitative;
2) under existing bolt support condition, when tunnel is in comparatively among break wall rock, the secondary how carrying out later stage pretightning force after roadway roof absciss layer or wall caving applies, and there is no completely suitable solution at present;
3) in pretightning force applying process, the moment of torsion transformation ratio without vertical muscle full-thread bolt is low, flight pitch is large and yielding, and move back anchor difficulty, pretightning force is difficult to reach designing requirement;
4) twisted steel anchor rod of end car silk can cause end anchor club shaft intensity to reduce, and does not meet supporting requirement, and then cost is high for the twisted steel anchor rod of end rolled thread, and both having that pretightning force applies cannot quantitative problem; Such anchor pole end car (rolling) filament length degree generally at 100mm ~ 120mm, pretightning force secondary apply space little, be not suitable for the later stage need expand side or answering of rock crusher repair tunnel etc.;
5) the stress deformation feature helped according to deep tunnel roof, two and the supporting requirement to bolt pretension, the twisted steel anchor rod of current top board many employings end rolled thread, two help adopt without vertical muscle full-thread bolt more, but this kind of mode exists the problems such as support process is loaded down with trivial details, labor strength large, tunnelling speed is slow.
Once bolt pretension applies not enough, then cannot produce operative constraint to country rock, very easily cause surrouding rock deformation to strengthen even out of control, increase the potential security risk in tunnel.Therefore, the present invention is directed to the Railway Project faced in the bolt support of existing mine, be intended to propose a kind of full-thread bolt pretightning force bringing device that can move back anchor fast.
Summary of the invention
The object of the invention is to solve that the moment of torsion transformation ratio occurred in existing mine full-thread bolt pretightning force applying process is low, screw thread is yielding and it is low and cannot quantitatively, pretightning force secondary applies the problems such as difficulty, complicated construction technique, labour intensity are large after wall caving to move back anchor difficulty, pretightning force applying value, a kind of full-thread bolt pretightning force bringing device that can move back anchor is fast proposed, give full play to mine bolt support potentiality, ensure safety of coal mines high-efficiency mining.
For achieving the above object, the present invention adopts following technology path:
A kind of full-thread bolt pretightning force bringing device that can move back anchor fast, comprise preposition crossbeam, rearmounted crossbeam and realize to the clamping of anchor pole with unclamp move back anchor device, described preposition crossbeam and rearmounted crossbeam all can be connected by contracting formula oil cylinder pillar with two hydraulic pressure, and in the middle of preposition crossbeam, rearmounted crossbeam, be equipped with the hole passed for anchor pole, described preposition crossbeam and the pallet of anchor pole are fitted, for counter-force supports, pulling capacity can be provided to anchor pole by contracting formula oil cylinder pillar by two hydraulic pressure; Rearmounted crossbeam with move back anchor device and match; The centre of described rearmounted crossbeam with move back anchor device and match, described extension type oil cylinder pillar has pneumatic-hydraulic pump to drive, and pneumatic-hydraulic delivery side of pump connects a controller.
The described anchor device that moves back comprises a lock tube, the outer ring of described lock tube is installed on the centre position of rearmounted crossbeam, it is taper above described lock tube inner ring, be cylindricality below, and in inner ring conical section, a special locking plate fitted tightly with it is installed, described special locking plate is made by high-strength steel, and its profile is cylinder I, cone and cylinder II from top to bottom successively, and inside is hollow cylinder; And the diameter of cylinder I is consistent with lock tube front end perforate internal diameter, the radius ratio cylinder I of cylinder II is large, less than the maximum radius of centrum.Special locking plate leading portion external diameter is consistent with lock tube front end perforate internal diameter, and in the front end of special locking plate, a preposition spring is installed, special locking plate rear end is provided with a conical sleeve, and described conical sleeve is connected with a rear spring, and described rear spring is connected with a pull bar ring.
When tensile ties ring, rear spring is compacted, preposition spring unclamps, and now special locking plate moves down along lock tube and opens, and anchor pole can be easily inner through fixture, and when releasing lever ring, taper under rear spring unclamps effect on move, now special locking plate moves and can clamp anchor pole, after treating anchor pole stretch-draw on lock tube, by tensile ties ring, fixture is unclamped, can not occur because anchor pole Leading Edge Deformation cannot move back the situation of anchor.
Two described hydraulic pressure can be placed in an oil cylinder by contracting formula oil cylinder pillar separately, and two oil cylinders are by same oil pipe fuel feeding, and described oil pipe is connected with a pneumatic-hydraulic pump, and oil pipe is provided with a stepless shift controller.Described oil cylinder, by adopting the isobaric fuel feeding of common oil circuit mode, can realize the synchronous uniform load of two hydraulic pressure pliable supports; The stepless shift controller be connected with pneumatic-hydraulic pump, size is exported by arranging different oil pressure gear fixing quantity pulling capacities, can realize carrying out anchor rod drawing under setting pulling capacity standard once reserve gear, and can automatic voltage regulation when pulling capacity reaches preset value, now can utilize digital display type torque wrench tightening nuts, when moment of torsion reaches certain setting value, the quantitative applying of bolt pretension can be completed.
The hole I passed for anchor pole is provided with in the middle part of described preposition crossbeam, outer ring is provided with can the hole II of contracting formula oil cylinder stanchions with hydraulic pressure, the hole wall of hole I has the radian adapted with anchor rod pallet board intermediate projections in a thickness direction, freely can adjust preposition crossbeam angle so that coincide with anchor rod pallet board, adapt to anchor pole and country rock surface off plumb situation, be convenient to anchor pole stretch-draw.
Is provided with the hole III coordinated with lock tube outer ring in the middle of described rearmounted crossbeam, outer ring is provided with confession hydraulic pressure can the hole IV of contracting formula oil cylinder stanchions.
A method of operating for the full-thread bolt pretightning force bringing device of anchor can be moved back fast, comprise the following steps:
1) pneumatic-hydraulic pump and on-the-spot airduct are connected, and keep blow valve to be in closed condition;
2) preposition crossbeam is enclosed within the anchor pole installing nut, tensile ties ring, and by anchor pole through in lock tube, then releasing lever ring, special locking plate clamping anchor pole;
3) adjusting device angle, makes the central circular hole I of preposition crossbeam better can coincide with anchor rod pallet board;
4) stepless shift controller is set to low-grade location, then opens airduct switch, just pretightning force is applied to anchor pole;
5) after the above step is finished, adjust stepless shift controller to pretightning force setting value, stretch-draw is carried out to anchor pole;
6) when bolt pretension reaches setting value, device is in voltage stabilizing state, now can utilize digital display type torque wrench tightening nuts, when moment of torsion reaches setting value, the quantitative applying of bolt pretension can be completed, now can tensile ties ring easily, special locking plate unclamps, and anchor pole completes and moves back anchor.
7) turn off airduct and carry out fuel tank blowback oil, this anchor rod drawing terminates, and removal device carries out next working cycles.
Compared with other conventional pretightning force applying methods current, the present invention has the following advantages:
1) to overcome when tradition utilizes torque wrench or pneumatic impact wrench to apply pretightning force to full-thread bolt that moment of torsion transformation ratio is low, flight pitch is large and yielding and cause move back anchor difficulty, pretightning force applies difficulty and quantitatively cannot wait shortcoming;
2) solve bolt pretension secondary and apply difficult problem, be applicable to various wall caving or answering of rock crusher repaiies tunnel;
3) roadway full-fracture-surfacanchoring-rod can use and carry out supporting without vertical muscle full-thread bolt, namely available nothing indulges the twisted steel anchor rod of the end rolled thread that muscle full-thread bolt replaces existing back to adopt, and simplifies anchor rod construction process, reduces roadway support cost, save labour, improve roadway construction efficiency;
4) by stepless shifting apparatus, quantitatively can realize arranging the continuous free of discontinuities adjustment of anchor rod drawing power, meet the applying requirement of all size pretightning force;
5) by setting anchor rod drawing power numerical value gear in advance, can automatic voltage regulation during pretightning force setting value to be achieved, without the need to Artificial Control, pretightning force is applied more accurate;
6) by utilize pull bar ring and high strong spring with the use of, anchor pole can be convenient to and clamp and unclamp, there is not the situation cannot moving back anchor because of anchor pole end stress deformation;
7) this pretightning force bringing device structure is simple, and convenient operation uses.
Accompanying drawing explanation
Fig. 1 is the agent structure schematic diagram of apparatus of the present invention;
Fig. 2 is the preposition crossbeam 1-1 cross-sectional view of apparatus of the present invention corresponding diagram 1;
Fig. 3 is the rearmounted crossbeam 2-2 cross-sectional view of apparatus of the present invention corresponding diagram 1;
Fig. 4 be apparatus of the present invention move back anchor device structural representation fast;
Fig. 5 is the special locking plate three-dimensional structure schematic diagram of apparatus of the present invention corresponding diagram 4;
Fig. 6 is the structural representations of apparatus of the present invention under anchor pole and country rock surface out of plumb situation;
Wherein: 1-country rock; 2-anchor pole; 3-anchor rod pallet board; The preposition crossbeam of 4-; 5-hydraulic pressure pliable support; 6-oil cylinder; The rearmounted crossbeam of 7-; 8-nut; The preposition spring of 9-; The special locking plate of 10-; 11-taper; 12-rear spring; 13-pull bar ring; 14-lock tube; 15-oil pipe; The stepless shift controller of 16-; 17-pneumatic-hydraulic pump; 18-air intake.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
The present invention by preposition crossbeam 9, hydraulic pressure pliable support 5, oil cylinder 6, rearmounted crossbeam 7, special locking plate 10, preposition spring 4, rear spring 12, taper 11, pull bar ring 13, lock tube 14, stepless shift controller 16, composition such as pneumatic-hydraulic pump 17 grade.Wherein, blast inputs pneumatic-hydraulic pump by air intake 18, after locking plate clamping anchor pole special in lock tube, arranges oil cylinder output services load, to realize the quantitative stretch-draw of full-thread bolt pretightning force by adjusting stepless shift controller.
Described preposition crossbeam 9 supports for counter-force, can provide pulling capacity by contracting formula oil cylinder pillar by two hydraulic pressure; The middle enlarged portion of preposition crossbeam 9 is circular, can improve the lifting surface area with anchor rod pallet board, reduces the phenomenon that stress is concentrated; Preposition crossbeam 9 middle circle annular distance wall has at thickness direction and divides suitable radian with anchor rod pallet board 3 swells, can the situation on self adaptation anchor pole out of plumb and country rock 1 surface;
Described lock tube 14 is installed on rearmounted crossbeam centre position, by with the use of pull bar ring, taper, special locking plate, preposition spring 9 and rear spring 12, anchor pole clamping can be realized fast and unclamp, specific implementation form is: pull bar ring is connected with taper, when tensile ties ring, rear spring 12 is compacted, preposition spring 9 unclamps, now special locking plate is rebounded along lock tube and is opened, anchor pole 2 can be easily inner through fixture, and when releasing lever ring, taper under rear spring unclamps effect on move, now special locking plate moves and can clamp anchor pole on lock tube, after treating anchor pole 2 stretch-draw, by tensile ties ring 13, fixture is unclamped, can not occur because anchor pole 2 Leading Edge Deformation cannot move back the situation of anchor.
Described oil cylinder 6, by adopting the isobaric fuel feeding of common oil circuit mode, can realize the synchronous uniform load of two hydraulic pressure pliable supports; The stepless shift controller 16 be connected with pneumatic-hydraulic pump, size is exported by arranging different oil pressure gear fixing quantity pulling capacities, can realize carrying out anchor rod drawing under setting pulling capacity standard once reserve gear, and can automatic voltage regulation when pulling capacity reaches preset value, now can utilize digital display type torque wrench tightening nuts, when moment of torsion reaches certain setting value, the quantitative applying of anchor pole 6 pretightning force can be completed.
A full-thread bolt pretightning force bringing device for anchor can be moved back fast, now by reference to the accompanying drawings its operating procedure is set forth further:
1) pneumatic-hydraulic pump 17 and on-the-spot airduct are connected, and keep blow valve to be in closed condition;
2) preposition crossbeam 4 is enclosed within the anchor pole 2 installing nut 8, tensile ties ring 13, and by anchor pole 2 through in lock tube 14, then releasing lever ring 13, special locking plate 10 clamps anchor pole;
3) adjusting device angle, makes the central circular perforate of preposition crossbeam 4 better can coincide with anchor rod pallet board 3;
4) stepless shift controller 16 to low-grade location is set, then opens airduct switch, just pretightning force is applied to anchor pole 2;
5) after the above step is finished, adjust stepless shift controller 16 to pretightning force setting value, stretch-draw is carried out to anchor pole 2;
6) when anchor pole 2 pretightning force reaches setting value, device is in voltage stabilizing state, now can utilize digital display type torque wrench tightening nuts, when moment of torsion reaches certain setting value, the quantitative applying of bolt pretension can be completed, now can tensile ties ring 13 easily, special locking plate 10 unclamps, and anchor pole completes and moves back anchor.
7) turn off airduct and carry out fuel tank pump 17 oil return, this anchor rod drawing terminates, and removal device can carry out next working cycles.
This kind disclosed in this invention can move back the full-thread bolt pretightning force bringing device of anchor fast, solve the various problems that full-thread bolt occurs in pretightning force applying process, there is features such as moving back anchor is quick, easy for operation, pretightning force applying precision is high, stable performance.
The foregoing is only apparatus of the present invention preferably specific implementation, as known by the technical knowledge, the present invention also can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, with regard to each side, all just illustrating, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (5)
1. one kind can be moved back the full-thread bolt pretightning force bringing device of anchor fast, it is characterized in that: comprise preposition crossbeam, rearmounted crossbeam and realize to the clamping of anchor pole with unclamp move back anchor device, described preposition crossbeam and rearmounted crossbeam all can be connected by contracting formula oil cylinder pillar with two hydraulic pressure, and in the middle of preposition crossbeam, rearmounted crossbeam, being equipped with the hole passed for anchor pole, described preposition crossbeam and the pallet of anchor pole are fitted; The centre of described rearmounted crossbeam with move back anchor device and match, described hydraulic pressure can be driven by pneumatic-hydraulic pump by contracting formula oil cylinder pillar, and pneumatic-hydraulic delivery side of pump connects a controller;
The described anchor device that moves back comprises a lock tube, the outer ring of described lock tube is installed on the centre position of rearmounted crossbeam, it is taper above described lock tube inner ring, be cylindricality below, and at inner ring cylindrical section, a special locking plate fitted tightly with it is installed, the front end of special locking plate is provided with a preposition spring, and rear end is provided with a conical sleeve, described conical sleeve is connected with a rear spring, and described rear spring is connected with a pull bar ring;
Described special locking plate is made by steel, and its profile is cylinder I, cone and cylinder II from top to bottom successively, and inside is hollow cylinder; And the diameter of cylinder I is consistent with lock tube front end perforate internal diameter, the radius ratio cylinder I of cylinder II is large, less than the maximum radius of cone.
2. full-thread bolt pretightning force bringing device as claimed in claim 1, it is characterized in that: two described hydraulic pressure can be placed in an oil cylinder by contracting formula oil cylinder pillar separately, two oil cylinders are by same oil pipe fuel feeding, described oil pipe is connected with a pneumatic-hydraulic pump, and oil pipe is provided with a stepless shift controller.
3. full-thread bolt pretightning force bringing device as claimed in claim 1, it is characterized in that: in the middle part of described preposition crossbeam, be provided with the hole I passed for anchor pole, outer ring is provided with can the hole II of contracting formula oil cylinder stanchions with hydraulic pressure, and the hole wall of hole I has the radian adapted with anchor rod pallet board intermediate projections in a thickness direction.
4. full-thread bolt pretightning force bringing device as claimed in claim 1, is characterized in that: is provided with the hole III coordinated with lock tube outer ring in the middle of described rearmounted crossbeam, and outer ring is provided with confession hydraulic pressure can the hole IV of contracting formula oil cylinder stanchions.
5. can move back the method for operating of the full-thread bolt pretightning force bringing device of anchor as claimed in claim 1 fast, it is characterized in that: comprise the following steps:
1) pneumatic-hydraulic pump and on-the-spot airduct are connected, and keep blow valve to be in closed condition;
2) preposition crossbeam is enclosed within the anchor pole installing nut, tensile ties ring, and by anchor pole through in lock tube, then releasing lever ring, locking plate clamping anchor pole;
3) adjusting device angle, makes the central circular hole I of preposition crossbeam can coincide with anchor rod pallet board;
4) stepless shift controller is set to low-grade location, then opens airduct switch, just pretightning force is applied to anchor pole;
5) after the above step is finished, adjust stepless shift controller to pretightning force setting value, stretch-draw is carried out to anchor pole;
6) when bolt pretension reaches setting value, device is in voltage stabilizing state, now utilizes digital display type torque wrench tightening nuts, when moment of torsion reaches setting value, the quantitative applying of bolt pretension can be completed, now tensile ties ring, locking plate unclamps, and anchor pole completes and moves back anchor;
7) turn off airduct and carry out fuel tank blowback oil, this anchor rod drawing terminates, and removal device carries out next working cycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598078.3A CN103590843B (en) | 2013-11-21 | 2013-11-21 | A kind of full-thread bolt pretightning force bringing device and method of operating can moving back anchor fast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598078.3A CN103590843B (en) | 2013-11-21 | 2013-11-21 | A kind of full-thread bolt pretightning force bringing device and method of operating can moving back anchor fast |
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| Publication Number | Publication Date |
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| CN103590843A CN103590843A (en) | 2014-02-19 |
| CN103590843B true CN103590843B (en) | 2015-10-21 |
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| CN201310598078.3A Expired - Fee Related CN103590843B (en) | 2013-11-21 | 2013-11-21 | A kind of full-thread bolt pretightning force bringing device and method of operating can moving back anchor fast |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104790989B (en) * | 2015-03-25 | 2017-04-12 | 中国矿业大学 | Device and method for releasing anchoring of mining chemical anchor rope |
| CN107387140A (en) * | 2017-09-05 | 2017-11-24 | 湖南科技大学 | A kind of multi-cylinder anchor rod hydraulic tensioning equipment and anchor pole method for stretching |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184784Y (en) * | 1994-03-25 | 1994-12-07 | 煤炭科学研究总院唐山分院 | Anchor rod reclaiming machine |
| CN2436652Y (en) * | 2000-07-18 | 2001-06-27 | 雷进 | Anchor rod pretightening installation means |
| CN103244159A (en) * | 2013-05-13 | 2013-08-14 | 中国矿业大学 | Method and device for exerting anchor rod pretightening force |
| CN203559916U (en) * | 2013-11-21 | 2014-04-23 | 山东大学 | Pretightening force applying device for full thread anchor rod capable of quickly unloading anchor |
-
2013
- 2013-11-21 CN CN201310598078.3A patent/CN103590843B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184784Y (en) * | 1994-03-25 | 1994-12-07 | 煤炭科学研究总院唐山分院 | Anchor rod reclaiming machine |
| CN2436652Y (en) * | 2000-07-18 | 2001-06-27 | 雷进 | Anchor rod pretightening installation means |
| CN103244159A (en) * | 2013-05-13 | 2013-08-14 | 中国矿业大学 | Method and device for exerting anchor rod pretightening force |
| CN203559916U (en) * | 2013-11-21 | 2014-04-23 | 山东大学 | Pretightening force applying device for full thread anchor rod capable of quickly unloading anchor |
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Inventor after: Li Shucai Inventor after: Wang Fuqi Inventor after: Peng Peng Inventor after: Pan Rui Inventor after: Yu Hengchang Inventor after: Qin Qian Inventor after: Sun Huibin Inventor after: Wang Lei Inventor after: Wang Hongtao Inventor after: Jiang Bei Inventor after: Wang Qi Inventor after: Ren Yaoxi Inventor after: Zhang Ruoxiang Inventor after: Wang Dechao Inventor after: Zhang Bo Inventor after: Yin Mingde Inventor before: Wang Hongtao Inventor before: Li Shucai Inventor before: Jiang Bei Inventor before: Ren Yaoxi Inventor before: Peng Peng Inventor before: Zhang Bo Inventor before: Wang Dechao Inventor before: Wang Qi Inventor before: Wang Xin |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 |