CN203559916U - Pretightening force applying device for full thread anchor rod capable of quickly unloading anchor - Google Patents
Pretightening force applying device for full thread anchor rod capable of quickly unloading anchor Download PDFInfo
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- CN203559916U CN203559916U CN201320745491.3U CN201320745491U CN203559916U CN 203559916 U CN203559916 U CN 203559916U CN 201320745491 U CN201320745491 U CN 201320745491U CN 203559916 U CN203559916 U CN 203559916U
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- anchor
- crossbeam
- anchor rod
- oil cylinder
- pretightning force
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Abstract
The utility model particularly discloses a pretightening force applying device for a full thread anchor rod capable of quickly unloading an anchor. The pretightening force applying device comprises a prepositive beam, a postpositive beam, and an anchor unloading device for clamping and loosening the anchor rod. The prepositive beam and the postpositive beam are connected with two hydraulic contractible oil cylinder pillars, holes which are provided for the anchor rod to across are formed in the middle of the prepositive beam and the postpositive beam, the prepositive beam is attached with a tray of the anchor rod in a counter-force supporting mode, drawing force for the anchor rod can be provided by the two hydraulic contractible oil cylinder pillars; the postpositive beam matches with the anchor unloading device; the middle portion of the postpositive beam matches with the anchor unloading device, the contractible oil cylinder pillar is driven by a pneumatic oil hydraulic pump, and an output end of the pneumatic oil hydraulic pump is connected with a controller. When the pretightening force is applied on the full thread anchor rod by using a torque wrench or a pneumatic wrench in a traditional mode, torque conversion coefficient is low, thread interval is large, and the anchor rod is easy to deform, so that the anchor is difficult to be unloaded, the pretightening force is difficult to apply and the pretightening force can not be quantified, but the pretightening force applying device for the full thread anchor rod capable of quickly unloading the anchor overcomes all of the defects.
Description
Technical field
The utility model relates to bolt support field, mine, relates in particular to a kind of full-thread bolt pretightning force bringing device that can move back fast anchor.
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 new challenges.Anchor pole occupies an important position in mine support system, in order to meet various actual demands, anchor pole performance, technique are also in continuous update, anchor pole type also emerges in an endless stream, such as comprise common rod bolt, twisted bolt, twisted steel anchor rod with ribbing, the vertical muscle full-thread bolt of nothing, surrender anchor pole, glass fibre reinforced plastics rockbolts, wood bolt, bamboo anchoring-bolt etc. for mine tunnel engineering anchor pole.
Anchor pole, by applying pretightning force, produces radial constraint to country rock, can effectively improve the stresses re-distribution condition of country rock, the self-supporting ability of country rock behind raising peak; Especially the tunnel in deep breaking surrounding rock, under " three high disturbances " influence factor, has proposed higher supporting requirement to bolt pretension.The twisted steel anchor rod of the end Che Sihe end rolled thread that the current deep tunnel supporting of take is conventional is example with the vertical muscle full-thread bolt of nothing, in rockbolt installation and use procedure, also has following problem, urgently to be resolved hurrily:
1) at present mostly down-hole is, by the mode of torque wrench or pneumatic impact wrench, anchor pole is applied to pretightning force, but that this kind of mode pretightning force applies range is lower, and has the problem that moment of torsion transformation ratio cannot be quantitative;
2) under existing bolt support condition, when tunnel is among compared with break wall rock, the secondary that how to carry out later stage pretightning force after roadway roof absciss layer or wall caving applies, and there is no at present suitable solution completely;
3) in pretightning force, apply in process, low without the moment of torsion transformation ratio of vertical muscle full-thread bolt, flight pitch is large and yielding, moves 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 strength decreased, does not meet supporting requirement, and the twisted steel anchor rod of end rolled thread cost is high, and both existing pretightning force to apply cannot quantitative problem; Such anchor pole end car (rolling) filament length degree is generally at 100mm～120mm, and it is little that pretightning force secondary applies space, be not suitable for the later stage need to expand side or answering of rock crusher repair tunnel etc.;
5) the stress deformation feature of helping according to deep tunnel roof, two and the supporting requirement to bolt pretension, top board adopts the twisted steel anchor rod of end rolled thread more at present, 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 deficiency, 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 utility model, for the several problems that face in the bolt support of existing mine, is intended to propose a kind of full-thread bolt pretightning force bringing device that can move back fast anchor.
Utility model content
The purpose of this utility model be solve existing mine full-thread bolt pretightning force apply that the moment of torsion transformation ratio occurring in process is low, screw thread is yielding and move back anchor difficulty, the pretightning force value of applying is low and cannot be quantitatively, pretightning force secondary applies the problems such as difficulty, complicated construction technique, labour intensity are large after wall caving, a kind of full-thread bolt pretightning force bringing device that can move back fast anchor is proposed, give full play to mine bolt support potentiality, guarantee safety of coal mines high-efficiency mining.
For achieving the above object, the utility model adopts following technology path:
A kind of full-thread bolt pretightning force bringing device that can move back fast anchor, comprise preposition crossbeam, rearmounted crossbeam and realize the clamping of anchor pole and the anchor device that moves back unclamping, described preposition crossbeam all can be connected by contracting formula oil cylinder pillar with two hydraulic pressure with rearmounted crossbeam, and in the middle of preposition crossbeam, rearmounted crossbeam, be equipped with the hole of passing for anchor pole, described preposition crossbeam and the laminating of the pallet of anchor pole, for counter-force supports, by two hydraulic pressure, can to anchor pole, provide pulling capacity by contracting formula oil cylinder pillar; Rearmounted crossbeam with move back anchor device and match; Match with moving back anchor device in the centre of described rearmounted crossbeam, 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 above described lock tube inner ring, is taper, be cylindricality below, and at inner ring tapering part, a special locking plate fitting 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 at 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 tension pull bar ring, rear spring is compacted, preposition spring unclamps, and now special locking plate moves down and opens along lock tube, and anchor pole can be easily inner through fixture, and when releasing lever ring, taper moves on rear spring unclamps under effect, and now special locking plate moves and can clamp anchor pole on lock tube, after treating anchor pole stretch-draw, can fixture be unclamped by tension pull bar ring, the situation of anchor can not occur cannot move back because of anchor pole Leading Edge Deformation.
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, is provided with a stepless shift controller on oil pipe.Described oil cylinder, by adopting the isobaric fuel feeding of common oil circuit mode, can be realized the synchronous uniform load of two hydraulic pressure pliable supports; The stepless shift controller being connected with pneumatic-hydraulic pump, can quantitatively control pulling capacity output size by different oil pressure gears is set, once reserving gear can realize and carry out anchor rod drawing setting under pulling capacity standard, and can automatic voltage regulation when pulling capacity reaches preset value, now can utilize digital display type torque wrench to screw nut, when moment of torsion reaches certain setting value, can complete quantitatively applying of bolt pretension.
Described preposition crossbeam middle part is provided with the hole I passing for anchor pole, outer ring is provided with hole II that can contracting formula oil cylinder stanchions with hydraulic pressure, the hole wall of hole I has the radian adapting with anchor rod pallet board intermediate projections on thickness direction, can freely 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.
In the middle of described rearmounted crossbeam, be provided with the hole I coordinating with lock tube outer ring, outer ring is provided with the hole II that confession hydraulic pressure can contracting formula oil cylinder stanchions.
The method of operating that can move back fast the full-thread bolt pretightning force bringing device of anchor, comprises the following steps:
1) pneumatic-hydraulic pump and on-the-spot airduct are connected, and keep blow valve in closed condition;
2) preposition crossbeam is enclosed within to the anchor pole that installs nut, tension pull bar ring, and by anchor pole through in lock tube, releasing lever ring then, special locking plate clamps anchor pole;
3) adjusting device angle, can better coincide with anchor rod pallet board the middle part circular port I of preposition crossbeam;
4) stepless shift controller is set to low-grade location, then opens airduct switch, anchor pole is applied to just pretightning force;
5) after above-mentioned steps completes, adjust stepless shift controller to pretightning force and set value, anchor pole is carried out to stretch-draw;
6), when bolt pretension reaches setting value, device, in voltage stabilizing state, now can utilize digital display type torque wrench to screw nut, when moment of torsion reaches setting value, can complete quantitatively applying of bolt pretension, now can strain easily pull bar ring, 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 finishes, and removal device carries out next operation cycle.
Compare with current other conventional pretightning force applying methods, the utlity model has following advantage:
1) while having overcome tradition and utilize torque wrench or pneumatic impact wrench to apply pretightning force to full-thread bolt, moment of torsion transformation ratio is low, flight pitch is large and yielding and cause move back anchor difficulty, pretightning force applies difficulty and cannot quantitatively wait shortcoming;
2) solve bolt pretension secondary and applied difficult problem, applicable to answering of various wall cavings or rock crusher, repaiied tunnel;
3) the full section in tunnel can be used without vertical muscle full-thread bolt and carry out supporting, be the twisted steel anchor rod that the vertical muscle full-thread bolt of available nothing replaces the end rolled thread of existing back employing, simplify anchor rod construction process, reduce roadway support cost, save labour, improve roadway construction efficiency;
4) by stepless shifting apparatus, can quantitatively realize the continuous free of discontinuities adjustment setting to anchor rod drawing power, meet the requirement that applies of all size pretightning force;
5) by setting in advance anchor rod drawing power numerical value gear, can automatic voltage regulation wait reaching pretightning force when setting value, without Artificial Control, pretightning force is applied more accurate;
6) by utilizing pull bar ring and high strong spring to be used in conjunction with, can be convenient to anchor pole and clamp and unclamp, not have the situation that cannot move back anchor because of anchor pole end stress deformation;
7) this pretightning force bringing device is simple in structure, and convenient operation is used.
Accompanying drawing explanation
Fig. 1 is the agent structure schematic diagram of the utility model device;
Fig. 2 is the preposition crossbeam 1-1 cross-sectional view of the utility model device corresponding diagram 1;
Fig. 3 is the rearmounted crossbeam 2-2 cross-sectional view of the utility model device corresponding diagram 1;
Fig. 4 be the utility model device move back fast anchor device structural representation;
Fig. 5 is the special locking plate three-dimensional structure schematic diagram of the utility model device corresponding diagram 4;
Fig. 6 is the structural representation of the utility model device in 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.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further.
The utility model is 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, pneumatic-hydraulic pump 17 compositions such as grade.Wherein, blast, by air intake 18 input pneumatic-hydraulic pumps, clamps after anchor pole until special locking plate in lock tube, can oil cylinder output services load be set by adjusting stepless shift controller, to realize the quantitative stretch-draw of full-thread bolt pretightning force.
Described preposition crossbeam 9, for counter-force supports, can provide pulling capacity by contracting formula oil cylinder pillar by two hydraulic pressure; In the middle of preposition crossbeam 9, enlarged portions be circular, can improve the lifting surface area with anchor rod pallet board, the concentrated phenomenon of minimizing stress; Preposition crossbeam 9 middle circle annular distance walls have with anchor rod pallet board 3 and heave the suitable radian of part at thickness direction, can self adaptation anchor pole out of plumb and the situation on country rock 1 surface;
Described lock tube 14 is installed on rearmounted crossbeam centre position, by being used in conjunction with pull bar ring, taper, special locking plate, preposition spring 9 and rear spring 12, can realize fast anchor pole clamps and unclamps, specific implementation form is: pull bar ring is connected with taper, when tension pull bar ring, rear spring 12 is compacted, preposition spring 9 unclamps, now special locking plate is rebounded and is opened along lock tube, anchor pole 2 can be easily inner through fixture, and when releasing lever ring, taper moves on rear spring unclamps under effect, now special locking plate moves and can clamp anchor pole on lock tube, after treating anchor pole 2 stretch-draw, can fixture be unclamped by tension pull bar ring 13, can there is not cannot move back because of anchor pole 2 Leading Edge Deformations the situation of anchor.
Described oil cylinder 6, by adopting the isobaric fuel feeding of common oil circuit mode, can be realized the synchronous uniform load of two hydraulic pressure pliable supports; The stepless shift controller 16 being connected with pneumatic-hydraulic pump, can quantitatively control pulling capacity output size by different oil pressure gears is set, once reserving gear can realize and carry out anchor rod drawing setting under pulling capacity standard, and can automatic voltage regulation when pulling capacity reaches preset value, now can utilize digital display type torque wrench to screw nut, when moment of torsion reaches certain setting value, can complete quantitatively applying of anchor pole 6 pretightning forces.
Can move back fast a full-thread bolt pretightning force bringing device for anchor, now by reference to the accompanying drawings its operating procedure further be set forth:
1) pneumatic-hydraulic pump 17 and on-the-spot airduct are connected, and keep blow valve in closed condition;
2) preposition crossbeam 4 is enclosed within to the anchor pole 2 that installs nut 8, tension pull bar ring 13, and anchor pole 2 is passed in lock tube 14, then releasing lever ring 13, and special locking plate 10 clamps anchor poles;
3) adjusting device angle, can better coincide with anchor rod pallet board 3 the middle part round hole of preposition crossbeam 4;
4) stepless shift controller 16 is set to low-grade location, then opens airduct switch, anchor pole 2 is applied to just pretightning force;
5) after above-mentioned steps completes, adjust stepless shift controller 16 to pretightning force setting value, anchor pole 2 is carried out to stretch-draw;
6) when anchor pole 2 pretightning forces reach setting value, device is in voltage stabilizing state, now can utilize digital display type torque wrench to screw nut, when moment of torsion reaches certain setting value, can complete quantitatively applying of bolt pretension, now can strain easily pull bar ring 13, special locking plate 10 unclamps, and anchor pole completes and moves back anchor.
7) turn off airduct and carry out 17 oil returns of fuel tank pump, this anchor rod drawing finishes, and removal device can carry out next operation cycle.
This kind disclosed in the utility model can move back the full-thread bolt pretightning force bringing device of anchor fast, solved full-thread bolt and applied in pretightning force the variety of issue occurring in process, had that the anchor of moving back is quick, easy for operation, pretightning force applies the features such as precision is high, stable performance.
The foregoing is only preferably specific implementation of the utility model device, as known by the technical knowledge, the utility model also can be realized by other the embodiment that does not depart from its Spirit Essence or essential feature.Therefore, with regard to each side, all just illustrating, is not only.All changes within the scope of the utility model or within being equal to scope of the present utility model are all included in the utility model.
Claims (5)
1. the full-thread bolt pretightning force bringing device that can move back fast anchor, it is characterized in that: comprise preposition crossbeam, rearmounted crossbeam and realize the clamping of anchor pole and the anchor device that moves back unclamping, described preposition crossbeam all can be connected by contracting formula oil cylinder pillar with two hydraulic pressure with rearmounted crossbeam, and in the middle of preposition crossbeam, rearmounted crossbeam, be equipped with the hole of passing for anchor pole, described preposition crossbeam and the laminating of the pallet of anchor pole; Match with moving back anchor device in the centre of described rearmounted crossbeam, described extension type oil cylinder pillar has pneumatic-hydraulic pump to drive, and pneumatic-hydraulic delivery side of pump connects a controller.
2. full-thread bolt pretightning force bringing device as claimed in claim 1, it is characterized in that: 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 above described lock tube inner ring, is taper, be cylindricality below, and at inner ring cylindrical section, a special locking plate fitting tightly with it is installed, the front end of special locking plate is provided with a preposition spring, 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 centrum.
3. 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, is provided with a stepless shift controller on oil pipe.
4. full-thread bolt pretightning force bringing device as claimed in claim 1, it is characterized in that: described preposition crossbeam middle part is provided with the hole I passing for anchor pole, outer ring is provided with hole II that can contracting formula oil cylinder stanchions with hydraulic pressure, and the hole wall of hole I has the radian adapting with anchor rod pallet board intermediate projections on thickness direction.
5. full-thread bolt pretightning force bringing device as claimed in claim 1, is characterized in that: in the middle of described rearmounted crossbeam, be provided with the hole I coordinating with lock tube outer ring, outer ring is provided with the hole II that confession hydraulic pressure can contracting formula oil cylinder stanchions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745491.3U CN203559916U (en) | 2013-11-21 | 2013-11-21 | Pretightening force applying device for full thread anchor rod capable of quickly unloading anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745491.3U CN203559916U (en) | 2013-11-21 | 2013-11-21 | Pretightening force applying device for full thread anchor rod capable of quickly unloading anchor |
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| CN203559916U true CN203559916U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320745491.3U Withdrawn - After Issue CN203559916U (en) | 2013-11-21 | 2013-11-21 | Pretightening force applying device for full thread anchor rod capable of quickly unloading anchor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590843A (en) * | 2013-11-21 | 2014-02-19 | 山东大学 | Full-thread anchor rod pre-tightening force exertion device capable of rapidly hauling off anchor rod and operation method |
| CN104153801A (en) * | 2014-08-29 | 2014-11-19 | 河南理工大学 | Method for automatic, rapid and damage-free application of high pretightening force to mining anchor rod |
| CN106153233A (en) * | 2016-06-24 | 2016-11-23 | 山东大学 | Stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor |
| CN108406677A (en) * | 2018-04-10 | 2018-08-17 | 北京卫星环境工程研究所 | 4 synchronous hydraulic loading devices of spacecraft launching site |
-
2013
- 2013-11-21 CN CN201320745491.3U patent/CN203559916U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590843A (en) * | 2013-11-21 | 2014-02-19 | 山东大学 | Full-thread anchor rod pre-tightening force exertion device capable of rapidly hauling off anchor rod and operation method |
| 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 |
| CN104153801A (en) * | 2014-08-29 | 2014-11-19 | 河南理工大学 | Method for automatic, rapid and damage-free application of high pretightening force to mining anchor rod |
| CN106153233A (en) * | 2016-06-24 | 2016-11-23 | 山东大学 | Stretch-draw force test device under a kind of prestressing force strand tapered anchorage anchor |
| CN108406677A (en) * | 2018-04-10 | 2018-08-17 | 北京卫星环境工程研究所 | 4 synchronous hydraulic loading devices of spacecraft launching site |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140423 Effective date of abandoning: 20151021 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |