CN112065482A - Mining anti-drop anchor cable tool and using method thereof - Google Patents
Mining anti-drop anchor cable tool and using method thereof Download PDFInfo
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- CN112065482A CN112065482A CN202010946791.2A CN202010946791A CN112065482A CN 112065482 A CN112065482 A CN 112065482A CN 202010946791 A CN202010946791 A CN 202010946791A CN 112065482 A CN112065482 A CN 112065482A
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- cap
- anchor
- anchor ring
- piece
- clamping
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- 238000005065 mining Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 230000006978 adaptation Effects 0.000 claims 2
- 238000004873 anchoring Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000005457 optimization Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a mining anti-drop anchor cable tool and a using method thereof, wherein the anti-drop anchor cable tool comprises an anchor ring, a clamping piece, a stopping cap which is clamped with the anchor ring along the axial direction, and an elastic force transmission piece which transmits force from the stopping cap to the large-diameter end of the clamping piece, wherein through holes for an anchor cable to pass through are formed in the stopping cap and the elastic force transmission piece. According to the invention, the retaining cap and the anchor ring are prevented from generating relative displacement by the force transmitted by vibration in a rock stratum through the clamping connection of the retaining cap and the anchor ring, and the retaining cap keeps reliable compression on the clamping sheet through the arrangement of the disc spring, so that the clamping sheet and the anchor ring are reliably and relatively fixed in the axial direction, and the anchoring failure caused by the time difference of the transmission of vibration waves is avoided.
Description
Technical Field
The invention relates to the technical field of mining anchorage devices, in particular to a mining anti-falling anchor cable tool and a using method thereof.
Background
At present, the mine prestressed anchorage in China usually adopts the structural style of an anchor ring and a clamping piece, and achieves the purpose of anchoring an anchor cable by utilizing the self-locking of the clamping piece in a conical hole of the anchor ring. However, when the rock stratum vibrates, the speed of the rock stratum and the speed of the anchor cable for transmitting the vibration waves are different, so that force transmission time difference is formed, the self-locking function between the clamping piece and the anchor ring is lost in a short time, the self-locking mechanism between the clamping piece and the anchor ring is damaged, the anchoring failure is caused after the self-locking mechanism is used for a long time, and great potential safety hazards exist.
The patent with application number 2013208317716 discloses a mining anticreep type prestressed anchorage utensil, from structural style, has realized the relative fixed of anchor ring and clamping piece through the effect of screw thread, but when the installation, because the pretightning force is great, the helicitic texture can not satisfy the pretensioning requirement, therefore its scheme is not applicable to actual production.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the mining anti-drop anchor rigging and the using method thereof, which not only ensure the reliable relative fixation of the anchor ring and the clamping piece, but also can use the puller for pre-tightening to meet the pre-tightening requirement.
The invention provides a mining anti-drop anchor rigging, which is realized by the following technical scheme and comprises an anchor ring, a clamping piece, a stopping cap and an elastic force transmission piece, wherein the stopping cap is clamped with the anchor ring along the axial direction, the elastic force transmission piece transmits force from the stopping cap to the large-diameter end of the clamping piece, and through holes for an anchor cable to pass through are formed in the stopping cap and the elastic force transmission piece.
This scheme realizes both along axial relatively fixed through the joint of stopping cap and anchor ring, passes power through setting up along axial deformation's elasticity biography power piece, utilizes the elasticity that stopping cap and anchor ring joint were preceding to pass power piece deformation, compensates stopping cap and anchor ring formation joint required clearance, guarantees that the stopping cap compresses tightly the reliable of clamping piece, avoids taking place relative axial displacement between stopping cap and the anchor ring.
Preferably, the retaining cap comprises a cap bottom and a cap side wall extending axially from the cap bottom to the same side, a plurality of deformation joints distributed along the circumferential direction are formed in the cap side wall, an outward-turning lip is arranged at one end, far away from the cap bottom, of the cap side wall, and a positioning groove clamped with the outward-turning lip is formed in the inner wall of the anchor ring. The retaining cap of this optimization scheme makes the cap lateral wall can take place radial bending deformation through setting up the movement joint, during pretension, under the effect of pretension, because the guide effect of the lip of turning up, make the cap lateral wall receive the extrusion and the incurve at anchor ring opening part, along with the continuation of pretension is exerted, the lip of turning up moves to the position relative with the constant head tank, and the cap lateral wall loses the extrusion and resumes deformation, makes the lip of turning up card establish to the constant head tank in. The height of the positioning groove is slightly larger than that of the outward-turning lip so as to ensure the outward-turning lip to be smoothly clamped, and the height difference between the positioning groove and the outward-turning lip is compensated by the deformation of the elastic force transmission piece.
Preferably, the elastic force transmission part comprises a pushing ring with one end pushing to the large-diameter end of the clamping piece and a disc spring positioned at the other end of the pushing ring, and the disc spring and the side wall of the cap are integrally formed. The elastic force transmission piece of the optimized scheme carries out rigid force transmission through the ejection ring, the clamping piece is guaranteed to be compressed through elastic deformation of the disc spring, the disc spring and the side wall of the cap are arranged into an integrated piece, the disc spring serves as the cap bottom, the structure is simplified, and the installation is also quicker.
As optimization, the opening of the anchor ring close to the large-diameter end of the clamping piece is provided with a chamfer matched with the outward-turning lip. According to the optimized scheme, the chamfer is arranged on the anchor ring, so that the guide is provided for the deformation of the side wall of the cap and the movement of the retaining cap, and the retaining cap is reliably clamped with the anchor ring.
Preferably, the elastic force transmission piece comprises a plurality of disc springs which are sequentially sleeved on the anchor cable between the stopping cap and the large-diameter end of the clamping piece along the axial direction. The optimized elastic force transmission piece adopts a structural type of a superposed disc spring, the pressing force on the clamping piece is increased, the axial length of the retaining cap is reduced, and the retaining cap is more convenient to manufacture.
As optimization, a rotary guide chute and a flat groove extending from the tail end of the rotary guide chute along the circumferential direction are formed in the inner wall of an opening at one end, facing the retaining cap, of the anchor ring, the outer diameter of the retaining cap is matched with the inner diameter of the anchor ring, and a sliding table matched with the rotary guide chute and the flat groove is arranged on the outer surface of the retaining cap. This joint structure of optimization scheme is when using, and the effect makes the stopping cap at the in-process that removes to the anchor ring through the pretension, because the existence of rotatory direction chute, makes the stopping cap take place to rotate to finally make the slip table slide to the flat slot, when vibrations appear in the stratum, because the setting of flat slot, and not prior art well thread structure, can not produce the rotary driving power to the stopping cap, only produce the axial force that further compresses tightly stopping cap and anchor ring, thereby realized the reliable relatively fixed of stopping cap and anchor ring.
The scheme also provides a using method of the mining anti-drop anchor rigging, which comprises the following steps:
s01, sequentially sleeving the anchor ring, the elastic force transmission piece and the retaining cap on the anchor cable, and installing the three clamping pieces in the anchor ring;
s02, pre-tightening the anchor cable by using a puller, clamping the anchor cable by using the traction end of the puller, jacking the jacking end of the puller to the backstop cap, and transmitting the thrust of the puller to the large-diameter end of the clamping piece through the elastic force transmission piece to enable the clamping piece to move in the anchor ring and clamp the anchor cable;
s03, the puller continues to work, the end part of the retaining cap enters the anchor ring under the action of thrust and is clamped with the anchor ring, and the elastic force transmission piece deforms axially;
s04, the puller is detached, the elastic force transmission piece rebounds to compensate the gap between the retaining cap and the anchor ring when the retaining cap is clamped, so that the retaining cap keeps a clamping state on the clamping piece, and the clamping piece and the anchor ring are prevented from moving relative to each other along the axial direction.
The invention has the beneficial effects that: through the joint of stopping cap and anchor ring, avoid appearing shaking the power that spreads and make stopping cap and anchor ring produce relative displacement in the stratum, through the setting of dish spring, make the stopping cap keep reliably compressing tightly the clamping piece to realized clamping piece and anchor ring at the reliable relatively fixed of axial, avoided leading to the anchor inefficacy because the time difference of transmission vibrations ripples.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a half sectional view of the retaining cap in accordance with one embodiment;
FIG. 3 is a top view of the retaining cap in accordance with the first embodiment;
FIG. 4 is a schematic view showing the structures of a rotary diversion chute and a flat chute in the third embodiment;
shown in the figure:
1. anchor ring, 2, clamping piece, 3, positioning groove, 4, pushing ring, 5, backstop cap, 6, cap bottom, 7, cap side wall, 8, outward-turning lip, 9, deformation joint, 10, rotary guide chute, 11 and flat groove.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by combining the anchoring of the roadway roof through a specific implementation manner.
Example one
As shown in fig. 1, the mining anti-drop anchor rigging comprises an anchor ring 1, a clamping piece 2, a retaining cap 5 clamped with the anchor ring along the axial direction of an anchor cable, and an elastic force transmission piece for transmitting force from the retaining cap to the large-diameter end of the clamping piece, wherein the elastic force transmission piece deforms along the axial direction, and through holes for the anchor cable to pass through are formed in the retaining cap and the elastic force transmission piece. The stopping cap and the elastic force transmission piece are located on the side where the large-diameter end of the clamping piece is located, and the stopping cap is clamped at the lower opening of the anchor ring.
The stopping cap of this embodiment includes the cap bottom 6 to and follow cap lateral wall 7 of axial extension to the homonymy from the cap bottom, set up a plurality of deformation joints 9 along circumference distribution on the cap lateral wall, the one end that the cap bottom was kept away from to the cap lateral wall is equipped with the lip 8 that turns up, the anchor ring inner wall be equipped with the constant head tank 3 of lip joint turns up, the constant head tank is along axial highly being greater than the lip that turns up along the axial height 0.5~1mm, guarantees that the lip that turns up can block smoothly into in the constant head tank under the effect of cap lateral wall resilience force, and the clearance between constant head tank and the lip that turns up is compensated by the deformation of dish spring. In order to provide guidance for the retaining cap to enter the anchor ring, a chamfer matched with the outward-turning lip mouth is arranged at the opening of the anchor ring close to the large-diameter end of the clamping piece, and the chamfer is positioned at the lower opening of the anchor ring in the embodiment.
The elastic force transmission piece comprises a pushing ring 4 with the upper end being pushed to the large-diameter end of the clamping piece and a disc spring positioned at the lower end of the pushing ring, and the disc spring and the side wall of the cap are integrally formed, namely the disc spring is used as the cap bottom in the embodiment, so that the elastic force transmission piece is convenient to process, manufacture and install.
The use method of the mining anti-drop anchor rigging comprises the following steps:
s01, sequentially sleeving the anchor ring, the pushing ring and the retaining cap in the elastic force transmission piece on the anchor cable, and installing the three clamping sheets in the anchor ring;
s02, pre-tightening the anchor cable by using a puller, clamping the anchor cable by using the drawing end of the puller, jacking the pushing end of the puller to the lower end of the side wall of the backstop cap, and transmitting the pushing force of the puller to the large-diameter end of the clamping piece through the disc spring and the pushing ring to enable the clamping piece to move towards the anchor ring and clamp the anchor cable;
s03, the puller continues to work, the upper end of the retaining cap enters the anchor ring under the action of thrust and is clamped with the anchor ring, the outward-turning lip is clamped in the positioning groove, and the disc spring axially deforms;
s04, the puller is detached, the elastic force transmission piece rebounds to compensate the gap between the retaining cap and the anchor ring when the retaining cap is clamped, so that the retaining cap keeps a clamping state on the clamping piece, and the clamping piece and the anchor ring are prevented from moving relative to each other along the axial direction.
Example two
The difference between this embodiment and the first embodiment lies in that the elastic force transmission member includes a plurality of disc springs that are sequentially sleeved on the anchor cable between the retaining cap and the large-diameter end of the clamping piece along the axial direction, and this embodiment transmits the pressing force of the retaining cap on the clamping piece through the disc springs, so that the clamping gap is more fully compensated, and the axial length of the retaining cap along the axial direction is favorably shortened.
EXAMPLE III
The difference between this embodiment and the first embodiment is that the cap sidewall 7 of the retaining cap of this embodiment is closed in the circumferential direction without providing a deformation joint, an outward-turned lip, and a positioning groove. The inner wall of an opening at one end of the anchor ring facing the retaining cap is provided with a rotary guide chute 10, and a flat groove 11 horizontally extending along the circumferential direction is arranged at the upper end of the self-rotary guide chute, the outer diameter of the retaining cap is matched with the inner diameter of the anchor ring, and a sliding table matched with the rotary guide chute and the flat groove is arranged on the outer surface of the retaining cap.
The joint structure of this embodiment is when using, the slip table corresponds with the lower port of rotation direction chute 10, make the stopping cap at the in-process that removes to the anchor ring through the effect of pretension, because the existence of rotation direction chute, make the stopping cap take place to rotate, and finally make the slip table slide to the flat slot, when vibrations appear in the stratum, because the setting of flat slot, only produce the axial force that further compresses tightly stopping cap and anchor ring, can not produce rotary driving power to the stopping cap, thereby realized the reliable relatively fixed of stopping cap and anchor ring.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a mining anticreep anchor rigging, includes anchor ring (1) and clamping piece (2), its characterized in that: still include along the axial with stopping cap (5) of anchor ring joint to and pass the elasticity biography power piece from stopping cap to the big footpath end biography power of clamping piece, all set up the through-hole that supplies the anchor rope to pass on stopping cap and the elasticity biography power piece.
2. The mining anti-drop anchor rigging of claim 1, wherein: the stopping cap comprises a cap bottom (6) and a cap side wall (7) extending axially from the cap bottom to the same side, wherein a plurality of deformation joints (9) distributed along the circumferential direction are formed in the cap side wall, an outward-turning lip (8) is arranged at one end, far away from the cap bottom, of the cap side wall, and a positioning groove (3) connected with the outward-turning lip in a clamping mode is formed in the inner wall of the anchor ring.
3. The mining anti-drop anchor rigging of claim 2, wherein: the elastic force transmission piece comprises a pushing ring (4) with one end pushing to the large-diameter end of the clamping piece and a disc spring positioned at the other end of the pushing ring, and the disc spring and the side wall of the cap are integrally formed.
4. The mining anti-drop anchor rigging of claim 2, wherein: an opening of the anchor ring close to the large-diameter end of the clamping piece is provided with a chamfer matched with the outward-turning lip.
5. The mining anti-drop anchor rigging of claim 1, wherein: the elastic force transmission piece comprises a plurality of disc springs which are sequentially sleeved on the anchor cable between the retaining cap and the large-diameter end of the clamping piece along the axial direction.
6. The mining anti-drop anchor rigging of claim 1, wherein: the anchor ring is seted up towards one end opening inner wall of stopping cap and is had rotatory guide chute (10) to and flat groove (11) that the end of autogyration guide chute extended along circumference, the external diameter and the anchor ring bayonet socket internal diameter adaptation of stopping cap, and be equipped with the slip table with rotatory guide chute, flat groove adaptation at the surface of stopping cap.
7. The use method of the mining anti-drop anchor rigging according to any one of claims 1 to 7, characterized by comprising the following steps:
s01, sequentially sleeving the anchor ring, the elastic force transmission piece and the retaining cap on the anchor cable, and installing the three clamping pieces in the anchor ring;
s02, pre-tightening the anchor cable by using a puller, clamping the anchor cable by using the traction end of the puller, jacking the jacking end of the puller to the backstop cap, and transmitting the thrust of the puller to the large-diameter end of the clamping piece through the elastic force transmission piece to enable the clamping piece to move in the anchor ring and clamp the anchor cable;
s03, the puller continues to work, the end part of the retaining cap enters the anchor ring under the action of thrust and is clamped with the anchor ring, and the elastic force transmission piece deforms axially;
s04, the puller is detached, the elastic force transmission piece rebounds to compensate the gap between the retaining cap and the anchor ring when the retaining cap is clamped, so that the retaining cap keeps a clamping state on the clamping piece, and the clamping piece and the anchor ring are prevented from moving relative to each other along the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010946791.2A CN112065482A (en) | 2020-09-10 | 2020-09-10 | Mining anti-drop anchor cable tool and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010946791.2A CN112065482A (en) | 2020-09-10 | 2020-09-10 | Mining anti-drop anchor cable tool and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112065482A true CN112065482A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010946791.2A Pending CN112065482A (en) | 2020-09-10 | 2020-09-10 | Mining anti-drop anchor cable tool and using method thereof |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1018967A (en) * | 1963-07-23 | 1966-02-02 | Cable Covers Ltd | Improvements in and relating to anchor grips for use in tensioning the wires,rods or stranded elements in prestressed concrete structures |
| CN2240546Y (en) * | 1995-10-13 | 1996-11-20 | 厉瑞祥 | Detachable loading head for anchor shaft |
| CN2292850Y (en) * | 1997-01-23 | 1998-09-30 | 北京市建筑工程研究院 | Combined prestressed clamping apparatus |
| JP2002081421A (en) * | 2000-09-08 | 2002-03-22 | Yamax Corp | Mounting fixture and mounting method for attachment |
| KR100767708B1 (en) * | 2006-08-01 | 2007-10-17 | (주)대영 | Tension cylinder of tensioning steel wire for public works |
| CN201665957U (en) * | 2010-01-04 | 2010-12-08 | 中铁大桥局集团第六工程有限公司 | Clamping piece type tool anchor for tensioning of single steel strand |
| CN202265938U (en) * | 2011-08-05 | 2012-06-06 | 建研科技股份有限公司 | Heat treatment high yield ratio steel bar pre-tensioning clamp |
| CN202830926U (en) * | 2012-04-06 | 2013-03-27 | 天津市振华预应力技术有限公司 | Self-locking type anchorage device |
| CN203654612U (en) * | 2013-12-17 | 2014-06-18 | 李金岭 | Anti-release type pre-stressed anchor for mine |
| CN106968246A (en) * | 2017-03-16 | 2017-07-21 | 长安大学 | A kind of composite anchorage for FRP muscle |
| CN206386141U (en) * | 2016-12-23 | 2017-08-08 | 浙江创振工程检测有限公司 | Easily pull out type anchor pole |
| CN207512737U (en) * | 2017-10-20 | 2018-06-19 | 上海智平基础工程有限公司 | A kind of anchorage of recoverable prestressed anchor cable |
| CN209761474U (en) * | 2019-04-22 | 2019-12-10 | 邹城市鲍矿大帅工贸有限公司 | Mining anchor cable |
| CN111608177A (en) * | 2020-06-19 | 2020-09-01 | 华侨大学 | High-pressure-resistant recyclable anchor rod and construction method thereof |
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2020
- 2020-09-10 CN CN202010946791.2A patent/CN112065482A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1018967A (en) * | 1963-07-23 | 1966-02-02 | Cable Covers Ltd | Improvements in and relating to anchor grips for use in tensioning the wires,rods or stranded elements in prestressed concrete structures |
| CN2240546Y (en) * | 1995-10-13 | 1996-11-20 | 厉瑞祥 | Detachable loading head for anchor shaft |
| CN2292850Y (en) * | 1997-01-23 | 1998-09-30 | 北京市建筑工程研究院 | Combined prestressed clamping apparatus |
| JP2002081421A (en) * | 2000-09-08 | 2002-03-22 | Yamax Corp | Mounting fixture and mounting method for attachment |
| KR100767708B1 (en) * | 2006-08-01 | 2007-10-17 | (주)대영 | Tension cylinder of tensioning steel wire for public works |
| CN201665957U (en) * | 2010-01-04 | 2010-12-08 | 中铁大桥局集团第六工程有限公司 | Clamping piece type tool anchor for tensioning of single steel strand |
| CN202265938U (en) * | 2011-08-05 | 2012-06-06 | 建研科技股份有限公司 | Heat treatment high yield ratio steel bar pre-tensioning clamp |
| CN202830926U (en) * | 2012-04-06 | 2013-03-27 | 天津市振华预应力技术有限公司 | Self-locking type anchorage device |
| CN203654612U (en) * | 2013-12-17 | 2014-06-18 | 李金岭 | Anti-release type pre-stressed anchor for mine |
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| CN207512737U (en) * | 2017-10-20 | 2018-06-19 | 上海智平基础工程有限公司 | A kind of anchorage of recoverable prestressed anchor cable |
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Application publication date: 20201211 |