CN103498690A - Double-anchor-cable combination locking device and method thereof - Google Patents
Double-anchor-cable combination locking device and method thereof Download PDFInfo
- Publication number
- CN103498690A CN103498690A CN201310395658.2A CN201310395658A CN103498690A CN 103498690 A CN103498690 A CN 103498690A CN 201310395658 A CN201310395658 A CN 201310395658A CN 103498690 A CN103498690 A CN 103498690A
- Authority
- CN
- China
- Prior art keywords
- anchor cable
- anchor
- steel strand
- locking
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a double-anchor-cable combination locking device and a method thereof. The double-anchor-cable combination locking device comprises a thread locking section and a clamping piece anchor locking device, the thread locking section is provided with an anchor cable steel strand, the anchor cable steel strand penetrates through the center of a supporting plate in a matching mode, a thread sleeve is arranged on the anchor steel strand in a sleeved mode, the thread sleeve is placed on the lower portion of the supporting plate and is attached to the supporting plate, and the thread sleeve and the supporting plate are fixed together through a nut. The clamping piece anchor locking section is provided with a double-anchor-cable connector which is provided with two anchor cable holes, and one ends of two anchor cable steel strands respectively penetrate through the upper anchor cable hole and the lower anchor cable hole and then are fixed by the clamping piece anchor locking device. The double-anchor-cable locking method comprises the steps of drilling, preparing anchor cables, anchoring the anchor cables, locking the double anchor cables in a combination mode, and stretching, drawing and locking the anchor cables independently. According to the double-anchor-cable combination locking device and the method thereof, the entire supporting strength and the stability of an anchor cable anchoring system are both improved, safety and reliability are achieved, the structure is simple, mounting is convenient, and wide practicability is achieved.
Description
Technical field
the present invention relates to a kind of pair of anchor cable device, especially can effectively strengthen a kind of pair of anchor cable combined locking device and method of cable bolting system reliability.
Background technology
60 mid-nineties 90s of last century, Australia is used anchor cable to carry out rock mass reinforcing in mine first, within 1996, the small-bore prestress anchorage cable is tested and succeeds at the China's coal-mine stope drift active workings, have the advantages such as pretightning force is large, supporting capacity is high, simple installation due to cable bolting, nowadays cable bolting has become one of main support form of coal mine roadway.But the locking mechanism of anchor cable adopts single strand tapered anchorage locking mostly in the prior art, when the roadway deformation amount is large, anchor cable is stressed higher, ground tackle, under heavily stressed corrosion and chemical corrosion, is prone to slippage between intermediate plate and steel strand and causes cable bolting to lose efficacy.
the girders anchorage cable support technology has obvious superiority in mine timbering, in the roadway deformation process, in the girders anchorage cable system, many anchor cables carry jointly, for tunnel shoulder nest and middle part stress is concentrated or the obvious zone of displacement, girders anchorage cable can provide effective active force in level and vertical simultaneously, make the integer support expanded range, and form the compressive stress district in country rock, can effectively improve the intensity of coal and rock, the tensile stress in the reduction coal and rock.The locking mechanism of general truss anchor cable is that strand tapered anchorage and girders anchorage cable connector form, once a failure of cable in Bracing Process in the girders anchorage cable system tends to cause the sync fail of other anchor cables on the girders anchorage cable connector, finally cause the integer support of girders anchorage cable to lose efficacy, greatly affected the performance of anchor cable and truss performance.
Summary of the invention
in order to solve the problem lost efficacy at existing cable bolting structure easy glide, the invention provides a kind of pair of anchor cable combined locking device and method, this pair of method that anchor cable combined locking device and method adopts screw-threaded coupling to combine with strand tapered anchorage locking, designed the locking device that can simultaneously realize two anchor cable associating stretch-draw lockings and the independent stretch-draw locking of each anchor cable, when guaranteeing that anchor cable is realized to larger pretightning force, changed the limitation of the single strand tapered anchorage stretch-draw of anchor cable pretension, the steel strand slippage occurred while having avoided adopting single strand tapered anchorage causes the failure of cable phenomenon, the integer support Strength and stability of anchorage cable anchoring system all is improved, safe and reliable, simple in structure, easy for installation, there is practicality widely.
the technical solution adopted for the present invention to solve the technical problems is: this pair of anchor cable combined locking device comprises screw-threaded coupling section and intermediate plate ground tackle locking section, described screw-threaded coupling section is provided with the anchor cable steel strand of a L shaped shape, anchor cable steel strand joint match is through the center of supporting plate, coincide and be set with screw shell on the anchor cable steel strand, screw shell is positioned at the bottom of supporting plate and is close to supporting plate, and screw shell and supporting plate are fixed together by nut; Described intermediate plate ground tackle locking section is provided with the two anchor cable connectors of a steel, has two anchor cable holes of upper and lower parallel correspondence on two anchor cable connectors, and an end of two anchor cable steel strand is fixed by strand tapered anchorage through after upper and lower anchor cable hole respectively; Hole depth a, pitch of holes b and anchor cable length L should meet following relational expression: a+ b/2+ 300mm<L<a+ b/2+ 500mm.
described supporting plate is for lifting plate, long 100-300mm, and wide 100-300mm, thick 10-15mm, material can be 2,3,4,5 grades of steel.
described thread bush tube length 100-200mm, diameter is 22mm, nut is standard nut, with screw shell 4, is complementary.
two anchor cable combined locking methods the steps include:
1. construction anchor cable boring, according to the roadway support design scheme, in roadway's sides or two anchor cable borings of top board construction, require hole depth a and pitch of holes b and anchor cable length L to be complementary, so that the anchor cable protruded length can be realized the combined locking between two anchor cables;
2. preparation anchor cable, steel sleeve is fixed on apart from anchor cable afterbody b/2+ 300mm to b/2+ 800mm place by modes such as forging and stamping, welding or bondings, then steel sleeve is carried out external screw thread processing and makes screw shell, after the permanent position of screw shell on the anchor cable steel strand should be guaranteed after two anchor cable united locking, screw shell is just in time in the drilling orifice position, so that nut matching thread sleeve carries out independent stretch-draw locking to anchor cable; Secondly, give two anchor cable steel strand cover mounting plates that are fixed with screw shell for the treatment of combined locking, and nut is screwed onto on the screw shell be complementary with it;
3. the anchoring anchor cable, by the Anchor Agent of resin anchoring agent or other types, carry out respectively end anchorage or the extensible bolting to two anchor cable steel strand, at the bottom of requiring two anchor cable steel strand all to be sent to drilling hole;
4. two anchor cable combined lockings, after two anchor cable steel strand anchorings are stable, the free end of two anchor cable steel strand is passed to the two anchor cable connectors of the same steel that has the parallel double anchor cable hole, by anchorage cable stretching equipment, two anchor cable steel strand are carried out to stretch-draw simultaneously, and adopt strand tapered anchorage to lock respectively two anchor cable steel strand, realize two anchor cable combined lockings, when the anchor cable steel strand are carried out to stretch-draw, the prestressing force that General Requirements imposes on anchor cable is 100-400kN;
5. the independent stretch-draw locking of anchor cable, utilize torque wrench to rotate the nut on screw shell simultaneously, make the closely connected supporting plate that presses of nut, the independent stretch-draw locking of realization to two anchor cables, the two anchor cables that prevent combined locking cause two anchor cables all to lose efficacy because strand tapered anchorage lost efficacy, when rotating nut carries out independent stretch-draw locking to the anchor cable steel strand, moment of torsion is 300-500Nm.
the invention has the beneficial effects as follows, this pair of method that anchor cable combined locking device and method adopts screw-threaded coupling to combine with strand tapered anchorage locking, designed the locking device that can simultaneously realize two anchor cable associating stretch-draw lockings and the independent stretch-draw locking of each anchor cable, when guaranteeing that anchor cable is realized to larger pretightning force, changed the limitation of the single strand tapered anchorage stretch-draw of anchor cable pretension, the steel strand slippage occurred while having avoided adopting single strand tapered anchorage causes the failure of cable phenomenon, the integer support Strength and stability of anchorage cable anchoring system all is improved, safe and reliable, simple in structure, easy for installation, there is practicality widely.
The accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described.
fig. 1 is structural principle schematic diagram of the present invention.
in Fig. 1,1. hole wall, 2. anchor cable steel strand, 3. screw-threaded coupling section, 4. supporting plate, 5. nut, 6. screw shell, 7. intermediate plate ground tackle locking section, 8. pair anchor cable connector, 9. strand tapered anchorage.
The specific embodiment
in Fig. 1, this pair of anchor cable combined locking device comprises screw-threaded coupling section 3 and intermediate plate ground tackle locking section 7, described screw-threaded coupling section 3 is provided with the anchor cable steel strand 2 of a L shaped shape, anchor cable steel strand 2 joint matchs are through the center of supporting plate 4, coincide and be set with screw shell 6 on anchor cable steel strand 2, screw shell 6 is positioned at the bottom of supporting plate 4 and is close to supporting plate 4, and screw shell 6 is fixed together by nut 5 with supporting plate 4; Described intermediate plate ground tackle locking section 7 is provided with the two anchor cable connectors 8 of a steel, has two anchor cable holes of upper and lower parallel correspondence on two anchor cable connectors 8, and an end of two anchor cable steel strand 2 is respectively through fixing by strand tapered anchorage 9 after upper and lower anchor cable hole; Hole depth a, pitch of holes b and anchor cable length L should meet following relational expression: a+ b/2+ 300mm<L<a+ b/2+ 500mm.
described supporting plate 4 is for lifting plate, long 200mm, and wide 200mm, thick 12mm, material can be 2,3,4,5 grades of steel.
the long 150mm of described screw shell 6, diameter is 22mm, nut is standard nut, with screw shell 4, is complementary.
two anchor cable combined locking methods the steps include:
1. construction anchor cable boring, according to the roadway support design scheme, in roadway's sides or two anchor cable borings of top board construction, require hole depth a and pitch of holes b and anchor cable length L to be complementary, so that the anchor cable protruded length can be realized the combined locking between two anchor cables;
2. preparation anchor cable, steel sleeve is fixed on apart from anchor cable afterbody b/2+ 300mm to b/2+ 800mm place by modes such as forging and stamping, welding or bondings, then steel sleeve is carried out external screw thread processing and makes screw shell 6, after the permanent position of screw shell 6 on anchor cable steel strand 2 should be guaranteed after two anchor cable united locking, screw shell 6 is just in time in the drilling orifice position, so that 6 pairs of anchor cables of nut 5 matching thread sleeve carry out independent stretch-draw locking; Secondly, give the two anchor cable steel strand that are fixed with screw shell 62 cover mounting plates 4 for the treatment of combined locking, and nut 5 is screwed onto on the screw shell 6 be complementary with it;
3. the anchoring anchor cable, by the Anchor Agent of resin anchoring agent or other types, carry out respectively end anchorage or the extensible bolting to two anchor cable steel strand 2, at the bottom of requiring two anchor cable steel strand 2 all to be sent to drilling hole;
4. two anchor cable combined lockings, after two anchor cable steel strand 2 anchorings are stable, the free end of two anchor cable steel strand 2 is passed to the two anchor cable connectors 8 of the same steel that has the parallel double anchor cable hole, by anchorage cable stretching equipment, two anchor cable steel strand 2 are carried out to stretch-draw simultaneously, and adopt strand tapered anchorage 9 to lock respectively two anchor cable steel strand 2, realize two anchor cable combined lockings, when anchor cable steel strand 2 are carried out to stretch-draw, the prestressing force that General Requirements imposes on anchor cable is 250kN;
5. the independent stretch-draw locking of anchor cable, utilize torque wrench to rotate the nut 5 on screw shell 6 simultaneously, make the closely connected supporting plate 4 that presses of nut 5, the independent stretch-draw locking of realization to two anchor cables, the two anchor cables that prevent combined locking caused two anchor cables all to lose efficacy because strand tapered anchorage 9 loses efficacy, when 5 pairs of anchor cable steel strand of rotating nut 2 carry out independent stretch-draw locking, moment of torsion is 400Nm.
Claims (4)
1.
a kind of pair of anchor cable combined locking device and method, this pair of anchor cable combined locking device comprises screw-threaded coupling section (3) and intermediate plate ground tackle locking section (7), it is characterized in that, described screw-threaded coupling section (3) is provided with the anchor cable steel strand (2) of a L shaped shape, anchor cable steel strand (2) joint match is through the center of supporting plate (4), upper the coincideing of anchor cable steel strand (2) is set with screw shell (6), screw shell (6) is positioned at the bottom of supporting plate (4) and is close to supporting plate (4), and screw shell (6) is fixed together by nut (5) with supporting plate (4); Described intermediate plate ground tackle locking section (7) is provided with the two anchor cable connectors (8) of a steel, have two anchor cable holes of upper and lower parallel correspondence on two anchor cable connectors (8), an end of two anchor cable steel strand (2) is respectively through fixing by strand tapered anchorage (9) after upper and lower anchor cable hole; Hole depth a, pitch of holes b and anchor cable length L should meet following relational expression: a+ b/2+ 300mm<L<a+ b/2+ 500mm.
2.
a kind of pair of anchor cable combined locking device and method according to claim 1, is characterized in that, described supporting plate (4) is for lifting plate, long 100-300mm, and wide 100-300mm, thick 10-15mm, material can be 2,3,4,5 grades of steel.
3.
a kind of pair of anchor cable combined locking device and method according to claim 1, is characterized in that, the long 100-200mm of described screw shell (6), and diameter is 22mm, nut is standard nut, with screw shell (4), is complementary.
4.
a kind of pair of anchor cable combined locking device and method, it is characterized in that, the steps include: the to construct anchor cable boring of two anchor cable combined locking methods, according to the roadway support design scheme, in roadway's sides or two anchor cable borings of top board construction, the anchor cable protruded length require hole depth a and pitch of holes b and anchor cable length L to be complementary, so that can be realized the combined locking between two anchor cables; Prepare anchor cable, steel sleeve is fixed on apart from anchor cable afterbody b/2+ 300mm to b/2+ 800mm place by modes such as forging and stamping, welding or bondings, then steel sleeve is carried out external screw thread processing and makes screw shell (6), after the permanent position of screw shell (6) on anchor cable steel strand (2) should be guaranteed after two anchor cable united locking, screw shell (6) is just in time in the drilling orifice position, so that nut (5) matching thread sleeve (6) carries out independent stretch-draw locking to anchor cable; Secondly, give two anchor cable steel strand (2) cover mounting plates (4) that are fixed with screw shell (6) for the treatment of combined locking, and nut (5) is screwed onto on the screw shell (6) be complementary with it; The anchoring anchor cable, by the Anchor Agent of resin anchoring agent or other types, carry out respectively end anchorage or the extensible bolting to two anchor cable steel strand (2), at the bottom of requiring two anchor cable steel strand (2) all to be sent to drilling hole; Two anchor cable combined lockings, after two anchor cable steel strand (2) anchoring is stable, the free end of two anchor cable steel strand (2) is passed to the two anchor cable connectors (8) of the same steel that has the parallel double anchor cable hole, by anchorage cable stretching equipment, two anchor cable steel strand (2) are carried out to stretch-draw simultaneously, and adopt strand tapered anchorage (9) to lock respectively two anchor cable steel strand (2), realize two anchor cable combined lockings, when anchor cable steel strand (2) are carried out to stretch-draw, the prestressing force that General Requirements imposes on anchor cable is 100-400kN; The independent stretch-draw locking of anchor cable, utilize torque wrench to rotate the nut (5) on screw shell (6) simultaneously, make the closely connected supporting plate (4) that presses of nut (5), the independent stretch-draw locking of realization to two anchor cables, the two anchor cables that prevent combined locking cause two anchor cables all to lose efficacy because strand tapered anchorage (9) lost efficacy, when rotating nut (5) carries out independent stretch-draw locking to anchor cable steel strand (2), moment of torsion is 300-500Nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395658.2A CN103498690B (en) | 2013-09-04 | 2013-09-04 | A kind of two anchor cable combined locking devices and methods therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395658.2A CN103498690B (en) | 2013-09-04 | 2013-09-04 | A kind of two anchor cable combined locking devices and methods therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103498690A true CN103498690A (en) | 2014-01-08 |
| CN103498690B CN103498690B (en) | 2016-03-02 |
Family
ID=49863938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310395658.2A Expired - Fee Related CN103498690B (en) | 2013-09-04 | 2013-09-04 | A kind of two anchor cable combined locking devices and methods therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103498690B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523004A (en) * | 2016-12-23 | 2017-03-22 | 山东大学 | Rigid-after-flexible feet-lock bolt combined supporting device and installation method |
| CN108104852A (en) * | 2017-12-18 | 2018-06-01 | 中国矿业大学 | A kind of low stretch-draw anchor construction method for reducing loss of prestress |
| CN112483147A (en) * | 2020-12-25 | 2021-03-12 | 江苏宝利国际投资股份有限公司 | Opposite-penetrating double-locking anchor cable supporting system for reinforcing soft rock columns of double-hole highway tunnel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566398A (en) * | 1984-02-09 | 1986-01-28 | Mitsui Engineering & Shipbuilding Co., Ltd. | Anchoring apparatus |
| CN2708037Y (en) * | 2004-07-09 | 2005-07-06 | 中国矿业大学 | Double tensile steel strand coupler |
| CN201810327U (en) * | 2009-11-29 | 2011-04-27 | 蔺少春 | Steel strand anchor rod of extruding anchor with external threads |
-
2013
- 2013-09-04 CN CN201310395658.2A patent/CN103498690B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566398A (en) * | 1984-02-09 | 1986-01-28 | Mitsui Engineering & Shipbuilding Co., Ltd. | Anchoring apparatus |
| CN2708037Y (en) * | 2004-07-09 | 2005-07-06 | 中国矿业大学 | Double tensile steel strand coupler |
| CN201810327U (en) * | 2009-11-29 | 2011-04-27 | 蔺少春 | Steel strand anchor rod of extruding anchor with external threads |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523004A (en) * | 2016-12-23 | 2017-03-22 | 山东大学 | Rigid-after-flexible feet-lock bolt combined supporting device and installation method |
| CN108104852A (en) * | 2017-12-18 | 2018-06-01 | 中国矿业大学 | A kind of low stretch-draw anchor construction method for reducing loss of prestress |
| CN108104852B (en) * | 2017-12-18 | 2019-05-14 | 中国矿业大学 | A kind of low stretch-draw anchor construction method reducing loss of prestress |
| CN112483147A (en) * | 2020-12-25 | 2021-03-12 | 江苏宝利国际投资股份有限公司 | Opposite-penetrating double-locking anchor cable supporting system for reinforcing soft rock columns of double-hole highway tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103498690B (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102121389B (en) | Method for preventing and treating roof falling and side collapsing of coal roadway surrounding rock by anchor rope truss | |
| CN103277122B (en) | Method for drilling anchor rod hole and anchoring anchor rod in broken roof | |
| CN104265339A (en) | Extrusion and friction type energy absorption anchor rod | |
| CN104847354B (en) | A kind of method that strip coal pillar performance is lifted using slip casting combined supporting anchor pole | |
| CN205117377U (en) | Gob entry driving fender is consolidated and is used slip casting anchor rope | |
| CN103498690B (en) | A kind of two anchor cable combined locking devices and methods therefor | |
| CN203782982U (en) | Connecting assembly of prefabricated reinforcements | |
| CN204591306U (en) | A kind of combined steel pipe concrete bow member for supporting | |
| CN102926768A (en) | Roadway support truss and mounting method thereof | |
| CN104164875A (en) | Tension and compression combination-type anchor rod | |
| CN103741687A (en) | Reaming pressure dispersion type anchor rod | |
| CN206468364U (en) | In one kind device is pre-installed to deep hole Anchor Agent | |
| CN208347807U (en) | Anchor pole is locked in tensioning | |
| CN103147777B (en) | Pumping paste prestress full bolting anchor rod/cable supporting method | |
| CN202914107U (en) | Roadway support truss | |
| CN202338349U (en) | Bamboo-joint type high-strength anchor rod | |
| CN103498513A (en) | Bolt connection node for bamboo/wood frame structure in which beam and column are clamped outside steel plate | |
| CN207634096U (en) | A kind of top plate deep hole Anchor Agent pre-installation device | |
| CN206600182U (en) | A kind of anti-disconnected anchor for being adapted to roadway with large deformation country rock | |
| CN206530347U (en) | A kind of Quick mechanical attachment structure for tunnel bracing members lock foot anchoring stock | |
| CN204419213U (en) | A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking | |
| CN104265329B (en) | For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock | |
| CN204716270U (en) | A kind of large deformation constant-resistance periodically pressure-relieving achor bar | |
| CN203257439U (en) | Anchor rope total-length anchoring device used for coal mine soft-rock roadway | |
| CN102400699A (en) | Bamboo-joint type high-strength anchor rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Guichen Inventor after: Zhang Nong Inventor after: Sun Hui Inventor after: Sun Yuantian Inventor after: Gao Kai Inventor after: Wei Yinghao Inventor after: Ma Zhenqian Inventor after: Wang Pengpeng Inventor before: Li Guichen Inventor before: Sun Hui Inventor before: Wei Yinghao Inventor before: Zhang Nong Inventor before: Wang Pengpeng Inventor before: Ma Zhenqian |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20160904 |