CN102674196A - Split front-clamping type tensioning jack and construction method thereof - Google Patents
Split front-clamping type tensioning jack and construction method thereof Download PDFInfo
- Publication number
- CN102674196A CN102674196A CN2012101870421A CN201210187042A CN102674196A CN 102674196 A CN102674196 A CN 102674196A CN 2012101870421 A CN2012101870421 A CN 2012101870421A CN 201210187042 A CN201210187042 A CN 201210187042A CN 102674196 A CN102674196 A CN 102674196A
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- coupling nut
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- stretch
- draw
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Abstract
The invention relates to a split front-clamping type tensioning jack for carrying out tensioning construction on steel stranded wires and the construction method of the jack. The jack is characterized in that the front end of a limiting plate is an end connected with a working anchor plate, and the rear end of the limiting plate is connected with a coupling nut; the coupling nut is connected with the outer thread of the front end of a core penetrating sleeve by adopting the inner thread, the inner cavity of the coupling nut is provided with an inner hole which is slightly larger than a pitch circle with the largest distribution of the steel stranded wires penetrating through a tool anchor, and the bearing platform of the inner cavity of the coupling nut is used for putting the tool anchor; and the front end of the tool anchor plate is connected with the bearing platform of the inner cavity of the coupling nut, and the rear end of the coupling nut is connected with the core penetrating sleeve. The split front-clamping type tensioning jack has the advantages that since a split front-clamping type is adopted, the limiting plate, the coupling nut, the tool anchor plate and the jack can be respectively arranged in a splitting manner and disassembled in a split manner after being unloaded; when being installed, the tool anchor is easily rotated to any angle by adopting the axis of prestressing tendon, the hole position of the working anchor can be easily aligned, then the reserved steel stranded wire can penetrate through the hole position to install the tool anchor, and the coupling nut arranged in the tool anchor is only screwed on the core penetrating sleeve of the jack without rotating the angle of the tensioning jack, so that the construction is convenient and the operation is simple and convenient.
Description
Technical field
The present invention relates to a kind of jack that prestress engineering uses that is used for, and particularly relates to cassette stretch-draw jack and construction method thereof before a kind of split of steel strand being carried out stretching construction.
Background technology
Existing inner blocking type jack; Basically be that jack is the whole shape structure that connects with moveable anchor, when construction, because the work ground tackle all is to have position, directivity hole to arrange mostly; Be erose; Thereby construction the time wants the moveable anchor of rotational fixation on jack go the to align hole of work anchor, need rotate together with jack and put up with mounted work anchor, just can pass steel strand.Because jack can't rotate under the lifting state basically, thereby it is extremely difficult to construct.
Summary of the invention
The object of the invention just provides a kind of convenient construction, cassette stretch-draw jack and construction method thereof before the split easy and simple to handle.
Solution of the present invention is such:
Cassette stretch-draw jack before the split of the present invention comprises positioning plate, oil cylinder, piston, punching cover, the front end of described positioning plate for the work anchor slab end that joins, rear end and coupling nut join; Described coupling nut is to adopt the front end that is threaded with the punching cover to be connected coupling nut inner chamber place tool anchor slab; The front end of described instrument anchor slab and coupling nut inner chamber cushion cap join, and coupling nut rear end and punching cover join; Described coupling nut cylindrical is provided with is convenient to rotate the rotation card that coupling nut precession punching cover front end outside thread makes it to connect.
Solution also comprises more specifically:
The front end of described positioning plate has the front bayonet slot that matches with the work anchor slab, and there is the back draw-in groove that cooperates with coupling nut its rear end.
The rear end of described punching cover is to be connected with the stretch-draw coupling nut.
Construction method of the present invention comprises step:
(1), work anchor, work clip sheet, positioning plate and coupling nut are penetrated the overhanging end of steel strand successively, the front end of positioning plate is pressed on the work anchor slab, the rear end of positioning plate and coupling nut front end join;
(2), the instrument anchor slab is put into the coupling nut inner chamber, mounting tools anchor instrument anchor slab;
(3), the jack assembly is moved to the position over against coupling nut, make punching cover front end aligning coupling nut, the rotation coupling nut screws in the front end of punching cover with coupling nut, pushes down moveable anchor plate rear end until the punching cover;
(4), give the pressurization of oil cylinder A mouth oil nozzle fuel feeding; Piston forward stretch out roof pressure on positioning plate after; The big seal plug of hydraulic coupling pushing tow; Drive stretch-draw coupling nut, punching cover, coupling nut carry out stretch-draw instrument anchor slab, make anchoring cone plate hole and taper-type dropper intermediate plate when moving backward, clamp steel strand and carry out stretch-draw.
(5), unloading are given the pressurization of B mouth oil nozzle fuel feeding, the oil cylinder counter motion when moving back anchor; Moved left by the loose instrument anchor slab in punching cover top, releasing tool anchor instrument intermediate plate unscrews coupling nut it is separated with the punching cover; Can take out the stretch-draw jack, subsequent use until taking off positioning plate.
Advantage of the present invention is owing to adopt the preceding cassette of split; But its positioning plate, coupling nut, instrument anchor slab and jack all partial installation are pulled down with unloading back split, and it is arbitrarily angled to be with the prestressing tendon axis that the center of circle lightly rotates to during the mounting tools anchor, and easily reservation steel strand mounting tools anchor is passed in the position, hole of alignment work anchor; The coupling nut of moveable anchor of only will packing into screws in the jack punching and puts; Need not to rotate stretch-draw jack angle, convenient construction, easy and simple to handle.
Description of drawings
Accompanying drawing is embodiments of the invention.
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is one of construction method step of the present invention.
Accompanying drawing 3 is two of construction method step of the present invention.
Accompanying drawing 4 is three of construction method step of the present invention.
Accompanying drawing 5 is construction method step four of the present invention.
The specific embodiment
Each parts is detailed as follows in the present embodiment:
1, steel strand, 2, anchor plate, 3, the work anchor slab, 4, work clip sheet, 5, positioning plate; 6, coupling nut, 7, the instrument anchor slab, 8, moveable anchor instrument anchor slab, 9, hold-down nut, 10, little seal plug; 11, B hydraulic fluid port, 12, oil cylinder, 13, piston, 14, the punching cover; 15, A hydraulic fluid port, 16, big seal plug, 17, setscrew nut, 18, the stretch-draw coupling nut.
Cassette stretch-draw jack before the split of the present invention shown in accompanying drawing 1, comprises positioning plate 5, oil cylinder 11, piston 12, punching cover 13, it is characterized in that the front end of described positioning plate 5 is pressed on the work anchor slab 3, and rear end and coupling nut 6 join; Described coupling nut 6 is to adopt negative thread to be connected with the front end outside thread of punching cover 13; Coupling nut 6 inner chambers have an endoporus to be a bit larger tham the reference circle that passes the steel strand extreme spread in the moveable anchor; Its cushion cap place tool anchor slab 7, coupling nut 6 bears whole tensile stresss of moveable anchor; The front end of described instrument anchor slab 7 and coupling nut 6 inner chambers join, and coupling nut rear end and punching cover 13 join; The rotation card that is provided with on described coupling nut 6 cylindricals is a counterbore, is convenient to insert the front end outside thread that rod iron rotates coupling nut precession punching cover 13.
The front end of described positioning plate 5 has the front bayonet slot that matches with the work anchor slab, withstands the circumferential edges of work anchor slab 3; There is the back draw-in groove that cooperates with coupling nut 6 its rear end, blocks the cylindrical of coupling nut.
Construction method of the present invention comprises step:
(1), work anchor 3, work clip sheet 4, positioning plate 5 and coupling nut 6 are enclosed within the overhanging end of steel strand 1 successively, the front end of positioning plate 5 is pressed on the work anchor slab 3, the rear end of positioning plate 5 and coupling nut 6 front ends join, shown in accompanying drawing 2;
(2), instrument anchor slab 7 is put into coupling nut 6 inner chambers, mounting tools anchor instrument anchor slab 8 is shown in accompanying drawing 3;
(3), the jack assembly is moved to over against the position of coupling nut 6, make punching overlap 13 front end aligning coupling nuts 6, rotation coupling nut 6 screws in the front end of punchings cover 13 with coupling nut 6, pushes down instrument anchor slab rear end until punching cover 13, shown in accompanying drawing 4;
(4), give the pressurization of oil cylinder A mouth oil nozzle fuel feeding; Piston 12 stretch out forward roof pressure on positioning plate 5 after; The big seal plug 14 of hydraulic coupling pushing tow; Drive stretch-draw coupling nut 16, punching cover 13, coupling nut 6 carry out stretch-draw instrument anchor slab 7, make anchoring cone plate hole and taper-type dropper intermediate plate when moving backward, step up steel strand and carry out stretch-draw, shown in accompanying drawing 5.
(5), unloading are given the pressurization of B mouth oil nozzle fuel feeding, the oil cylinder counter motion when moving back anchor; To left movement, releasing tool anchor instrument intermediate plate 8 unscrews coupling nut 6 itself and punching cover 13 is separated by the loose moveable anchor in punching cover 13 tops 7; Can take out the stretch-draw jack, subsequent use until taking off positioning plate.
Claims (5)
1. the preceding cassette stretch-draw jack of split comprises positioning plate (5), oil cylinder (11), piston (12), punching cover (13), it is characterized in that the front end of described positioning plate (5) is pressed on the work anchor slab (3), and rear end and coupling nut (6) join; Described coupling nut (6) is to adopt negative thread to be connected with the front end outside thread of punching cover (13); Coupling nut (6) inner chamber has an endoporus to be a bit larger tham the reference circle that passes the steel strand extreme spread in the moveable anchor; Its cushion cap place tool anchor (7), coupling nut (6) bears whole tensile stresss of moveable anchor; The front end of described instrument anchor slab (7) and coupling nut (6) inner chamber join, and rear end and punching cover (13) join; Described coupling nut (6) cylindrical is provided with is convenient to rotate the rotation card that coupling nut precession punching cover (13) front end outside thread makes it to connect.
2. cassette stretch-draw jack before the split according to claim 1 is characterized in that the front end of described positioning plate (5) has the front bayonet slot that matches with work anchor, and there is the back draw-in groove that cooperates with coupling nut (6) its rear end.
3. cassette stretch-draw jack before the split according to claim 1, the rear end that it is characterized in that described punching cover (13) is to be connected with stretch-draw coupling nut (16).
4. cassette stretch-draw jack before the split according to claim 1 is characterized in that the rotation card on the coupling nut (6) is a counterbore, is convenient to insert rod iron and rotates coupling nut precession punching cover front end outside thread.
5. adopt the construction method of the preceding cassette stretch-draw jack of the described split of claim 1, it is characterized in that comprising step:
(1), will work anchor slab (3), work clip sheet (4), positioning plate (5) and coupling nut (6) penetrates the overhanging end of steel strand (1) successively; The front end of positioning plate (5) is pressed on the work anchor slab (3), and the rear end of positioning plate (5) and coupling nut (6) front end join;
(2), instrument anchor slab (7) is put into coupling nut (6) inner chamber, mounting tools anchor instrument anchor slab (8);
(3), the jack assembly is moved to over against the position of coupling nut (6); Make punching cover (13) front end aligning coupling nut (6); Rotation coupling nut (6) with the front end of coupling nut (6) screw-in punching cover (13), is pushed down instrument anchor slab rear end until punching cover (13);
(4), give the pressurization of oil cylinder A mouth oil nozzle fuel feeding; Piston (12) stretches out roof pressure forward after positioning plate (5) is gone up; The big seal plug of hydraulic coupling pushing tow (14); Drive stretch-draw coupling nut (16), punching cover (13), coupling nut (6) carry out stretch-draw instrument anchor slab (7), make anchoring cone plate hole and taper-type dropper intermediate plate when moving backward, clamp steel strand and carry out stretch-draw;
(5), unloading are when moving back anchor; Give the pressurization of B mouth oil nozzle fuel feeding, the oil cylinder counter motion is pushed up loose moveable anchor (7) to left movement by punching cover (13); Releasing tool anchor instrument intermediate plate (8); Unscrew coupling nut (6) it is separated with punching cover (13), can take out the stretch-draw jack, subsequent use until taking off positioning plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101870421A CN102674196A (en) | 2012-06-08 | 2012-06-08 | Split front-clamping type tensioning jack and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101870421A CN102674196A (en) | 2012-06-08 | 2012-06-08 | Split front-clamping type tensioning jack and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102674196A true CN102674196A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101870421A Pending CN102674196A (en) | 2012-06-08 | 2012-06-08 | Split front-clamping type tensioning jack and construction method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923621A (en) * | 2012-10-16 | 2013-02-13 | 中铁十局集团有限公司 | Method for quickly aligning steel strands in tension construction of front-clamping jack and centring plate |
| CN102995906A (en) * | 2012-12-05 | 2013-03-27 | 柳州市桥厦工程管材有限公司 | Prestress tension limit plate |
| CN103011008A (en) * | 2012-12-05 | 2013-04-03 | 柳州市桥厦工程管材有限公司 | Chuck connection front clamping type jack |
| CN103321158A (en) * | 2013-07-05 | 2013-09-25 | 中铁七局集团有限公司 | Steel strand post-tensioning construction method without damaging working clamping piece |
| CN104909300A (en) * | 2015-05-14 | 2015-09-16 | 柳州泰姆预应力机械有限公司 | Intelligent front clamping type jack enabling construction to be achieved conveniently |
| CN105019603A (en) * | 2015-08-02 | 2015-11-04 | 张甲禄 | Supporting pad for loosening and fastening pre-stressed anchor cable |
| CN105502200A (en) * | 2016-01-18 | 2016-04-20 | 柳州泰姆预应力机械有限公司 | Intelligent front-clamping jack capable of facilitating construction and easy to install and maintain |
| CN106049882A (en) * | 2016-08-10 | 2016-10-26 | 中冶建工集团有限公司 | Tool anchor clamp piece limit method capable of achieving intelligent prestress tensioning |
| CN106545539A (en) * | 2015-09-21 | 2017-03-29 | 襄阳中铁宏吉工程技术有限公司 | A kind of buried anchor inner blocking type hydraulic cylinder of tensioning |
| CN106809759A (en) * | 2017-03-02 | 2017-06-09 | 湖南联智智能科技有限公司 | A kind of preceding clip type jack from dynamometry value |
| CN104649180B (en) * | 2014-06-24 | 2017-07-04 | 柳州市威尔姆预应力有限公司 | Inner blocking type stretch-draw jack and its construction method |
| CN107700848A (en) * | 2017-09-13 | 2018-02-16 | 核工业西南勘察设计研究院有限公司 | A kind of stopping means for reducing prestressd anchor cable loss |
| CN108584762A (en) * | 2018-07-05 | 2018-09-28 | 上海市机械施工集团有限公司 | A kind of use can be used for replacing in the process the tool anchor device of centre-hole jack |
| CN111794520A (en) * | 2020-06-17 | 2020-10-20 | 安徽金星预应力工程技术有限公司 | Steel strand prestress tensioning device and method |
| CN113187245A (en) * | 2021-04-29 | 2021-07-30 | 中建桥梁有限公司 | Clamping piece shifting device for prestress tension releasing construction and shifting method thereof |
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| US3333819A (en) * | 1964-11-17 | 1967-08-01 | Brandestini Antonio | Wire tensioning jack having alignment means |
| CN2652905Y (en) * | 2003-06-10 | 2004-11-03 | 焦金太 | Prestress hydraulic pre-press anti-rotary front clamp type jack |
| CN2666876Y (en) * | 2003-12-18 | 2004-12-29 | 柳州欧维姆机械股份有限公司 | Stretching jack with spacing device |
| CN2712880Y (en) * | 2004-08-07 | 2005-07-27 | 开封科英预应力锚具厂 | Double acting through type jack |
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| CN202116235U (en) * | 2011-05-19 | 2012-01-18 | 中铁十局集团有限公司 | Fore-cramp jack |
| CN202967998U (en) * | 2012-06-08 | 2013-06-05 | 柳州泰姆预应力机械有限公司 | Split-type front-clamping tensioning jack |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333819A (en) * | 1964-11-17 | 1967-08-01 | Brandestini Antonio | Wire tensioning jack having alignment means |
| CN2652905Y (en) * | 2003-06-10 | 2004-11-03 | 焦金太 | Prestress hydraulic pre-press anti-rotary front clamp type jack |
| CN2666876Y (en) * | 2003-12-18 | 2004-12-29 | 柳州欧维姆机械股份有限公司 | Stretching jack with spacing device |
| CN2712880Y (en) * | 2004-08-07 | 2005-07-27 | 开封科英预应力锚具厂 | Double acting through type jack |
| CN201889378U (en) * | 2011-01-28 | 2011-07-06 | 安徽金星预应力工程技术有限公司 | Cutting machine for steel strand |
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| CN202116235U (en) * | 2011-05-19 | 2012-01-18 | 中铁十局集团有限公司 | Fore-cramp jack |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923621B (en) * | 2012-10-16 | 2014-12-10 | 中铁十局集团有限公司 | Method for quickly aligning steel strands in tension construction of front-clamping jack and centring plate |
| CN102923621A (en) * | 2012-10-16 | 2013-02-13 | 中铁十局集团有限公司 | Method for quickly aligning steel strands in tension construction of front-clamping jack and centring plate |
| CN102995906A (en) * | 2012-12-05 | 2013-03-27 | 柳州市桥厦工程管材有限公司 | Prestress tension limit plate |
| CN103011008A (en) * | 2012-12-05 | 2013-04-03 | 柳州市桥厦工程管材有限公司 | Chuck connection front clamping type jack |
| CN103011008B (en) * | 2012-12-05 | 2015-07-29 | 柳州市桥厦工程管材有限公司 | Clip type jack before chuck connects |
| CN102995906B (en) * | 2012-12-05 | 2016-08-24 | 柳州市桥厦工程管材有限公司 | Prestressed stretch-draw limiting plate |
| CN103321158A (en) * | 2013-07-05 | 2013-09-25 | 中铁七局集团有限公司 | Steel strand post-tensioning construction method without damaging working clamping piece |
| CN104649180B (en) * | 2014-06-24 | 2017-07-04 | 柳州市威尔姆预应力有限公司 | Inner blocking type stretch-draw jack and its construction method |
| CN104909300A (en) * | 2015-05-14 | 2015-09-16 | 柳州泰姆预应力机械有限公司 | Intelligent front clamping type jack enabling construction to be achieved conveniently |
| CN105019603A (en) * | 2015-08-02 | 2015-11-04 | 张甲禄 | Supporting pad for loosening and fastening pre-stressed anchor cable |
| CN106545539B (en) * | 2015-09-21 | 2019-04-30 | 襄阳中铁宏吉工程技术有限公司 | A kind of tensioning buried anchor inner blocking type hydraulic cylinder |
| CN106545539A (en) * | 2015-09-21 | 2017-03-29 | 襄阳中铁宏吉工程技术有限公司 | A kind of buried anchor inner blocking type hydraulic cylinder of tensioning |
| CN105502200A (en) * | 2016-01-18 | 2016-04-20 | 柳州泰姆预应力机械有限公司 | Intelligent front-clamping jack capable of facilitating construction and easy to install and maintain |
| CN106049882A (en) * | 2016-08-10 | 2016-10-26 | 中冶建工集团有限公司 | Tool anchor clamp piece limit method capable of achieving intelligent prestress tensioning |
| CN106809759A (en) * | 2017-03-02 | 2017-06-09 | 湖南联智智能科技有限公司 | A kind of preceding clip type jack from dynamometry value |
| CN107700848A (en) * | 2017-09-13 | 2018-02-16 | 核工业西南勘察设计研究院有限公司 | A kind of stopping means for reducing prestressd anchor cable loss |
| CN108584762A (en) * | 2018-07-05 | 2018-09-28 | 上海市机械施工集团有限公司 | A kind of use can be used for replacing in the process the tool anchor device of centre-hole jack |
| CN111794520A (en) * | 2020-06-17 | 2020-10-20 | 安徽金星预应力工程技术有限公司 | Steel strand prestress tensioning device and method |
| CN113187245A (en) * | 2021-04-29 | 2021-07-30 | 中建桥梁有限公司 | Clamping piece shifting device for prestress tension releasing construction and shifting method thereof |
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Application publication date: 20120919 |