CN103343696B - For male cone thrust unit and this cable bolting structure of cable bolting structure - Google Patents
For male cone thrust unit and this cable bolting structure of cable bolting structure Download PDFInfo
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- CN103343696B CN103343696B CN201310311489.XA CN201310311489A CN103343696B CN 103343696 B CN103343696 B CN 103343696B CN 201310311489 A CN201310311489 A CN 201310311489A CN 103343696 B CN103343696 B CN 103343696B
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- voussoir
- male cone
- jacking block
- cable
- anchor cable
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- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 239000011435 rock Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
The present invention relates to mine timbering field, specifically a kind of male cone thrust unit for cable bolting structure and this cable bolting structure; Described male cone thrust unit comprises overcoat, jacking block and voussoir, and anchor cable is through described overcoat, jacking block and voussoir; Described jacking block is arranged between described overcoat and described anchor cable; Described voussoir is arranged on described outer to put, and one end of this voussoir axis is provided with inclined-plane; Described voussoir can radially sliding along described overcoat; When described wedge slides makes the inclined-plane of this voussoir extrude described jacking block, this jacking block passes described male cone.The present invention is not affecting in anchor cable normal mounting stretch-draw situation, effectively reduces anchor cable and to bounce back the loss of the pretightning force brought, and overload stretch-draw when can prevent anchor cable from installing, significantly improve anchor cable duty; And structure of the present invention is simple, convenient operation and maintenance, guaranteed performance can stablize under mine working environment.
Description
Technical field
The present invention relates to mine timbering field, particularly a kind of male cone thrust unit for cable bolting structure and this cable bolting structure.
Background technology
Coal mine roadway bolt support, generally adopts anchor pole to superficial part surrounding rock supporting, and coordinates the support pattern of anchor cable deep-level country rock anchoring reinforcement.Anchor pole applies compressive stress to a sheath country rock, form secondary bearing bed, the secondary bearing bed that bolt support is formed then is stablized rock stratum with deep and is connected by anchor cable, improves the stability of bolt support layer and transfers deep wall rock supporting capacity, improves the resistance to overturning of support system.When carrying out cable bolting installation, require initial pretightning force anchor cable being applied to cable body Breaking load 40 ~ 70%, rational pretightning force ensures that anchor cable plays the prerequisite of support action in time.
Anchor cable pretightning force uses special hollow stretch-draw jack to apply.Anchor cable pretightning force applies principle as shown in Figure 1, when anchor cable 2 being installed in boring 1, first be inserted in anchor cable pallet 4, aligning spherical washer 5 and supporting lock assembly (anchor ring 6 and male cone 7) in anchor cable 2 afterbody order, then anchor cable passed jack end cap 8 and hollow piston rod 9.During stretch-draw anchor, the oil-feed of jack afterbody P1 mouth, piston 15 drives piston rod 9 to stretch out, jack cylinder body 14 inner spring 13 pushing tow instrument anchoring part 12 and tool anchor clamp 11 are along anchor cable axial slip, tool anchor clamp 11 male cone (strobilus masculinus) is wedged the inner conical surface of instrument anchor ring 10 and is clamped cable body, and jack end cap 8 front end face holds out against the rear end face of anchor ring 6 simultaneously.Piston rod 9 continues to stretch out, and anchor cable pallet 4, aligning spherical washer 5 etc. are pressed on 3 places, country rock surface by anchor ring 6 front end face; Tool anchor clamp 11 clamping anchor cable is to boring 1 out-draw, and cable body relative anchor ring 6 slippage is also extended.When stretch-draw jack stops stretch-draw or unloads, to the P2 mouth oiling of stretch-draw jack, tool anchor clamp 11 unclamps anchor cable, and anchor cable bounces back, and drives male cone 7 to clamp-on the internal taper hole of anchor ring 6, makes anchor cable keep the tensile force applied.
Anchor cable pretightning force is after anchor cable stretches when bouncing back, and male cone 7 clamps anchor cable and clamp-ons anchor ring 6 locks the incipient extension power that cable body keeps.For preventing the seizing anchor cable surface of male cone 7, or clamp-on the stuck cable body of anchor ring 6 in advance because of male cone 7 and affect stretch-draw, jack end cap 8 is processed with counterbore, when stretching anchor cable is installed, male cone 7 tail end sinks in jack end cap 8 counterbore, make male cone 7 lag behind anchor ring 6 servo-actuated with jack end cap 8, form the mounting process clearance delta h of cinching process.When stopping stretching or lifting jack unloading, the cable body retraction of elongation, drive delayed male cone 7 to clamp-on anchor ring 6 and complete locking, mounting process gap disappears.The cable body retraction of locking process, makes the pretightning force of the actual reservation of anchor cable only have 60 ~ 70% of maximum tension load, forms the loss of anchor cable pretightning force.Visible, the loss of anchor cable pretightning force is that mounting process determines, and current mounting process can not avoid pretightning force to lose.
When improving anchor cable installation tensile load to ensure the actual pretightning force of anchor cable to meet the demands, easily cause following problem: cause anchor cable to cross stretch-draw on the one hand, affect anchor cable service behaviour; On the other hand, to large diameter anchor, because of the restriction of tensioner practical capacity, enough tensile loads can not be provided, cause anchor cable pretightning force not enough.
In order to overcome the above problems, invention has been useful improvement.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide a kind of avoid the loss of in anchor cable locking process pretightning force for the structural male cone thrust unit of cable bolting and this cable bolting structure.
(2) technical scheme
The present invention is achieved by the following technical solutions: a kind of male cone thrust unit for cable bolting structure, comprises overcoat, jacking block and voussoir, and anchor cable is through described overcoat, jacking block and voussoir; Described jacking block is arranged between described overcoat and described anchor cable; Described voussoir is arranged on described outer to put, and one end of this voussoir axis is provided with inclined-plane; Described voussoir can radially sliding along described overcoat; When described wedge slides makes the inclined-plane of this voussoir unclamp described jacking block, described anchor cable stretches and drives the male cone of cable bolting structure to sink in described overcoat; When making the inclined-plane of this voussoir extrude described jacking block when described wedge slides, this jacking block is made to pass described male cone.
Wherein, through hole is established in described overcoat; Described anchor cable is through described through hole, and described jacking block is arranged in the through hole of described overcoat; When described anchor cable stretching drives described male cone to pass described jacking block, described male cone enters in the through hole of this overcoat near the end of described overcoat.
Further, described jacking block is provided with inclined-plane with the contact jaw of described voussoir is corresponding respectively.
Preferably, the inclined-plane of described jacking block is identical with the gradient on the inclined-plane of described voussoir.
Further, also slide is comprised; Described slide is arranged on the coat, and is positioned at the opposite side relative with described jacking block of described voussoir; The other end corresponding with described inclined-plane on described voussoir is provided with plane; The plane of described voussoir can be slided along described slide.
Wherein, the upper end of described voussoir is provided with transverse plane, and the lower end of this voussoir is provided with lower end plane.
The present invention also provides a kind of cable bolting structure, comprises the male cone thrust unit as above described in either a program.
(3) beneficial effect
Compare with product with prior art, the present invention has the following advantages:
1, the present invention is not affecting in anchor cable normal mounting stretch-draw situation, provides a kind of male cone thrust unit; When anchor cable is stretched to design pretightning force, male cone can directly be got in the anchor ring of cable bolting structure by this device, the loss of the pretightning force brought thus effective minimizing anchor cable bounces back;
2, the present invention is when installing anchor cable, does not need significantly to improve installation tensile force, thus overload stretch-draw when avoiding anchor cable to install, significantly improve anchor cable duty;
3, structure of the present invention is simple, convenient operation and maintenance, guaranteed performance can stablize under mine working environment.
Accompanying drawing explanation
Fig. 1 is existing cable bolting mounting structure figure;
Fig. 2 is the structure chart of cable bolting structure provided by the invention before anchorage cable stretching locking;
Fig. 3 is the structure chart of male cone thrust unit of the present invention before anchorage cable stretching locking;
Fig. 4 is the structure chart of cable bolting structure provided by the invention after anchorage cable stretching locking;
Fig. 5 is the structure chart of male cone thrust unit of the present invention after anchorage cable stretching locking.
In accompanying drawing, the component list representated by each label is as follows:
1-boring, 2-anchor cable, 3-country rock surface, 4-anchor cable pallet, 5-aligning spherical washer, 6-anchor ring, 7-male cone, 8-jack end cap, 9-hollow piston rod, 10-instrument anchor ring, 11-tool anchor clamp, 12-instrument anchoring part, 13-goring push spring, 14-jack cylinder body, 15-piston, 20-stretch-draw jack, 30-male cone thrust unit, 31-overcoat, 32-jacking block, 33-voussoir, 34-slide.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
As shown in Figure 2, the present embodiment provides a kind of cable bolting structure, comprises anchor cable component, stretch-draw jack 20 and male cone thrust unit 30, and described anchor cable component comprises anchor cable pallet 4, aligning spherical washer 5, anchor ring 6 and male cone 7; Anchor cable 2 successively through described anchor cable pallet 4, aligning spherical washer 5, anchor ring 6, male cone 7 is with male cone thrust unit 30 and be connected with stretch-draw jack 20; After anchor cable 2 is stretched to design pretightning force by described stretch-draw jack 20, as shown in Figure 4, adopts described male cone thrust unit 30 to promote described male cone 7 and be pressed in described anchor ring 6, described anchor cable 2 is locked.In this enforcement, after anchor cable is stretched to design pretightning force, by male cone thrust unit, male cone is directly pressed in anchor ring, anchor cable is locked by lockset under design tensile load, anchor cable retraction after avoiding stretch-draw jack stopping stretching or when unloading, the loss of the pretightning force brought thus effective minimizing anchor cable bounces back.
Wherein, the present embodiment provides a kind of male cone thrust unit for cable bolting structure, and as shown in Figure 3 and Figure 5, described male cone thrust unit 30 comprises overcoat 31, jacking block 32 and voussoir 33, and described jacking block 32 is arranged in described overcoat 31; Described anchor cable 2 is through described overcoat 31, jacking block 32 and voussoir 33; Described voussoir 33 1 end face is provided with inclined-plane, and the axis perpendicular of this voussoir 33 length direction and described overcoat 31; Described voussoir 33 can radially sliding along described overcoat 31; When described voussoir 33 upward sliding, the inclined-plane of this voussoir 33 unclamps described jacking block 32, and described anchor cable 2 stretches and drives described male cone 7 to sink in described overcoat 31; When described voussoir 33 slide downward, the inclined-plane of this voussoir 33 extrudes described jacking block 32, makes this jacking block 32 pass described male cone 7 and is pressed in described anchor ring 6, locked by described anchor cable 2.
Further, through hole is established in described overcoat 31; Described anchor cable 2 is through this through hole, and described jacking block 32 is arranged between described overcoat 31 and described anchor cable 2; Move towards away from anchor ring 6 direction when described anchor cable 2 stretching drives described male cone 7 to pass described jacking block 32, and described male cone 7 is entered in the through hole of this overcoat 31 by the end near described overcoat 31.Thus, make male cone 7 lag behind anchor ring 6 servo-actuated with overcoat 31, form the mounting process gap of cinching process.When stopping stretching or lifting jack unloading, the anchor cable 2 of elongation bounces back, and drives delayed male cone 7 to clamp-on anchor ring 6 and completes locking, and mounting process gap disappears.Prevent seizing anchor cable 2 surface of male cone 7, or affect stretch-draw because the stuck anchor cable 2 of anchor ring 6 clamp-oned in advance by male cone 7.
Further, described jacking block 32 contacts with described voussoir 33 that one end is corresponding is provided with inclined-plane.The inclined-plane of described jacking block 32 is identical with the gradient on the inclined-plane of described voussoir 33, thus makes in voussoir 33 sliding process, passes jacking block 32 smoothly and slides.
Wherein, described male cone thrust unit 30 also comprises slide 34; Described slide 34 is arranged on overcoat 31, and is positioned at the opposite side of the described voussoir 33 corresponding with described jacking block 32; On described voussoir 33, the other end corresponding with described inclined-plane is provided with plane; The plane of described voussoir 33 can be slided along described slide 34.
The upper end of described voussoir 33 is provided with transverse plane Q2, and the lower end of this voussoir 33 is provided with lower end plane Q1.
When using this device, the protruded length of anchor cable need add and is about 50mm.The using method of the cable bolting structure in the present embodiment is as follows:
Anchor cable 2 is anchored in coal and rock boring 1 by a routinely construction technology, and makes anchor cable 2 expose initial length in boring 1 to be about 350mm.
B installs anchor cable pallet 4, aligning spherical washer 5, lock assembly by normal process, is then set with described male cone thrust unit 30 and stretch-draw jack 20.
The voussoir 33 lower end plane Q1 of male cone thrust unit 30 described in c hammering, thus unclamp jacking block 32; And to the P1 mouth oiling of stretch-draw jack 20, use stretch-draw jack 20 stretch-draw anchor 2.
D stretch-draw jack 20 stretches after anchor cable 2 to design pretightning force, and the upper transverse plane Q2 of hammering voussoir 33, promotes jacking block 32 and headed in anchor ring 6 by male cone 7, thus making male cone 7 clamp anchor cable 2.
E is to the P2 mouth oiling of stretch-draw jack 20, and retraction stretch-draw jack 20 also unloads, and anchor cable 2 installs.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (7)
1. for a male cone thrust unit for cable bolting structure, it is characterized in that, comprise overcoat, jacking block and voussoir, anchor cable is through described overcoat, jacking block and voussoir; Described jacking block is arranged between described overcoat and described anchor cable; Described voussoir is arranged on described outer to put, and one end of this voussoir axis is provided with inclined-plane, and the axis perpendicular of the length direction of this voussoir and described overcoat; Described voussoir can radially sliding along described overcoat; When described wedge slides makes the inclined-plane of this voussoir unclamp described jacking block, described anchor cable stretches and drives the male cone of cable bolting structure to sink in described overcoat; When making the inclined-plane of this voussoir extrude described jacking block when described wedge slides, this jacking block is made to pass described male cone.
2. the male cone thrust unit for cable bolting structure according to claim 1, is characterized in that, establish through hole in described overcoat; Described anchor cable is through described through hole, and described jacking block is arranged in the through hole of described overcoat; When described anchor cable stretching drives described male cone to pass described jacking block, described male cone enters in the through hole of this overcoat near the end of described overcoat.
3. the male cone thrust unit for cable bolting structure according to claim 1, is characterized in that, described jacking block is provided with inclined-plane with the contact jaw of described voussoir is corresponding respectively.
4. the male cone thrust unit for cable bolting structure according to claim 3, is characterized in that, the inclined-plane of described jacking block is identical with the gradient on the inclined-plane of described voussoir.
5. the male cone thrust unit for cable bolting structure according to claim 1, is characterized in that, also comprise slide; Described slide is arranged on the coat, and is positioned at the opposite side relative with described jacking block of described voussoir; The other end corresponding with described inclined-plane on described voussoir is provided with plane; The plane of described voussoir can be slided along described slide.
6. the male cone thrust unit for cable bolting structure according to claim 1, it is characterized in that, the upper end of described voussoir is provided with transverse plane, and the lower end of this voussoir is provided with lower end plane.
7. a cable bolting structure, is characterized in that, comprises the male cone thrust unit as described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310311489.XA CN103343696B (en) | 2013-07-23 | 2013-07-23 | For male cone thrust unit and this cable bolting structure of cable bolting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310311489.XA CN103343696B (en) | 2013-07-23 | 2013-07-23 | For male cone thrust unit and this cable bolting structure of cable bolting structure |
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| Publication Number | Publication Date |
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| CN103343696A CN103343696A (en) | 2013-10-09 |
| CN103343696B true CN103343696B (en) | 2015-10-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104594930A (en) * | 2015-01-04 | 2015-05-06 | 安徽理工大学 | Novel sphere type anchor rope applicable to faults and other geological structure damaged sections |
| CN108502777A (en) * | 2018-04-11 | 2018-09-07 | 日照斯特佳尔基础工程有限责任公司 | Centre-hole jack |
| CN114875847B (en) * | 2022-05-06 | 2023-04-25 | 江西中一建工集团有限公司 | Be used for hydraulic building side slope strutting arrangement |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203383840U (en) * | 2013-07-23 | 2014-01-08 | 天地科技股份有限公司 | Anchor plug pushing device used for anchor rope supporting structure and anchor rope supporting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201099992Y (en) * | 2007-10-25 | 2008-08-13 | 邵培森 | Screw type constant tension small retraction prestressing force anchorage cable stretching equipment |
| CN101285392A (en) * | 2008-05-19 | 2008-10-15 | 中国科学院武汉岩土力学研究所 | Anchor rod prestress controlled self-locking lockset |
| CN201560776U (en) * | 2009-12-10 | 2010-08-25 | 淮北恒远工程建材设备有限责任公司 | Pre-stressed anchor lock bolt |
| WO2011156450A2 (en) * | 2010-06-08 | 2011-12-15 | Minova Americas | Resin-anchored bolt with indentations |
| CN202148470U (en) * | 2011-06-28 | 2012-02-22 | 葛沛新 | Rail fixer capable of being quickly mounted and dismounted |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203383840U (en) * | 2013-07-23 | 2014-01-08 | 天地科技股份有限公司 | Anchor plug pushing device used for anchor rope supporting structure and anchor rope supporting structure |
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Effective date of registration: 20230222 Address after: 102206 No.1 Linkong 2nd Road, Shunyi Park, Zhongguancun Science Park, Shunyi District, Beijing Patentee after: China Coal Mining Research Institute Co.,Ltd. Address before: 100013, 5 Youth Road, Heping Street, Beijing, Chaoyang District Patentee before: TIANDI SCIENCE & TECHNOLOGY Co.,Ltd. |