CN103422676B - The even tensioning equipment of anchor cable - Google Patents
The even tensioning equipment of anchor cable Download PDFInfo
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- CN103422676B CN103422676B CN201310325704.1A CN201310325704A CN103422676B CN 103422676 B CN103422676 B CN 103422676B CN 201310325704 A CN201310325704 A CN 201310325704A CN 103422676 B CN103422676 B CN 103422676B
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- oil cylinder
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- steel strand
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Abstract
The even tensioning equipment of a kind of anchor cable, comprise two blocks of oil cylinder control position plates and multiple small-sized stretch-draw oil cylinder, two blocks of oil cylinder control position plates are respectively in the two ends of stretch-draw oil cylinder, the periphery of described oil cylinder control position plate is equidistantly provided with at least two control position drawing zones, the corresponding stretch-draw oil cylinder of each control position drawing zone, each control position drawing zone is provided with a steel strand hole and is positioned at two control position plate screws around steel strand hole; Described stretch-draw oil cylinder comprises cylinder body, and described cylinder body is cylindric, and its rear end is provided with oil cylinder base plate, and front end is provided with oil cylinder end plate; The oil cylinder inner wall of described cylinder body forms the steel strand chamber passed through by steel strand; Structure of the present invention is simple, and charge and discharge operations is convenient, can apply identical prestressing force to whole bundle anchor cable every root steel strand, thus improves globality and the durability of anchor cable.
Description
Technical field
The present invention relates to the technical field of geotechnical engineering anchoring, particularly relate to the even tensioning equipment of a kind of anchor cable.
Background technology
Utilize prestress anchorage cable tensioning equipment to carry out prestressed stretch-draw to anchor cable and mainly contain two kinds of modes, one is the locking of whole bundle anchor cable single tension, and two is that the first post tensioning of single steel strand locks respectively.
These two kinds of modes all can cause with the stressed different problem of steel strand in a branch of anchor cable, are mainly reflected in: (1) is identical with the elongation of steel strand in a branch of anchor cable, but the prestressing force that each root steel strand provides is different; (2) with in a branch of anchor cable due to stretch-draw successively, cause each root steel strand elongation different, the prestressing force provided is also different.
These two kinds of stretching modes can produce serious potential safety hazard to stable military service of prestress anchorage cable, occur that single steel strand is broken and hot candied phenomenon, single steel strand load shifts successively and raises, and causes anchorage cable anchoring power to reduce or steel strand dominoes formula inefficacy in whole bundle anchor cable.
For this reason, designer of the present invention is because above-mentioned defect, and by concentrating on studies and designing, comprehensive experience and the achievement being engaged in related industry for a long time for many years, research and design goes out the even tensioning equipment of a kind of anchor cable, to overcome above-mentioned defect.
Summary of the invention
The object of the present invention is to provide the even tensioning equipment of a kind of anchor cable, its structure is simple, and charge and discharge operations is convenient, can apply identical prestressing force to whole bundle anchor cable every root steel strand, thus improves globality and the durability of anchor cable.
For achieving the above object, the invention discloses the even tensioning equipment of a kind of anchor cable, comprise two blocks of oil cylinder control position plates and multiple small-sized stretch-draw oil cylinder, two blocks of oil cylinder control position plates are respectively in the two ends of stretch-draw oil cylinder, it is characterized in that:
The periphery of described oil cylinder control position plate is equidistantly provided with at least two control position drawing zones, the corresponding stretch-draw oil cylinder of each control position drawing zone, each control position drawing zone is provided with a steel strand hole and is positioned at two control position plate screws around steel strand hole;
Described stretch-draw oil cylinder comprises cylinder body, and described cylinder body is cylindric, and its rear end is provided with oil cylinder base plate, and front end is provided with oil cylinder end plate;
It is empty that described cylinder body has the annular oil cavity surrounded by cylinder wall between oil cylinder base plate and oil cylinder end plate, and a piston is positioned at described annular oil cavity, and described piston rod stretches out described cylinder body from oil cylinder end plate;
The oil cylinder inner wall of described cylinder body forms the steel strand chamber passed through by steel strand.
Wherein, the annular oil cavity of this cylinder body is divided into two sections by piston, the side of piston-rodless is without bar oil pocket, periphery without bar oil pocket is provided with fuel feed hole, there is the side of piston rod for there being bar oil pocket, have the periphery of bar oil pocket to be provided with oil outlet, described fuel feed hole and oil outlet are connected to hydraulic oil feed system by oil pipe.
Wherein, be provided with oil pressure detector at described fuel feed hole and oil outlet place, a control unit be connected to described oil pressure detector and described hydraulic oil feed system with by hydraulic oil feed system to the isobaric hydraulic oil of each cylinder body supply.
Wherein, described hydraulic oil feed system comprises oil pump and at least two distributing valves, and the quantity of this distributing valve is equal with the quantity of control position drawing zone, and each distributing valve is connected to control unit.
Wherein, oil cylinder control position plate is circular slab or regular polygon.
Wherein, described oil cylinder base plate is the disk of tool central through hole, the periphery of described oil cylinder base plate is provided with two oil cylinder screws corresponding with described control position plate spiral shell, described oil cylinder end plate is the disk of tool central through hole, and the periphery of described oil cylinder end plate is provided with two oil cylinder screws corresponding with described control position plate screw.
By said structure, the even tensioning equipment of anchor cable of the present invention has following technique effect:
1, structure is simple, operation and handling facility;
2, every root steel strand of a branch of anchor cable arrange independent oil cylinder and oil circuit, and tightening force is equalization stable more;
3, control perfect, all oil cylinders can be realized and individually to work but pulling force is impartial, stop stretch-draw when the prestressing force of every root steel strand reaches identical value, carry out prestressing force locking, realize the even stretch-draw of anchor cable;
4, each oil cylinder is evenly positioned at control position plate periphery, thus balances to the tensile stress energy centering of whole anchor cable, achieves overall stretch-draw consistent, more improves tension effects.
The present invention will be further described in detail by the following specific embodiments, and will be more apparent and obvious to understand further combined with the description of the drawings.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of three beams anchor cable oil cylinder control position of the present invention plate;
Fig. 2 shows the schematic diagram of five bundle anchor cable oil cylinder control position plates of the present invention;
Fig. 3 shows the schematic diagram of seven bundle anchor cable oil cylinder control position plates of the present invention;
Fig. 4 shows stretching single steel strand oil cylinder plan view of the present invention;
Fig. 5 shows stretching single steel strand oil cylinder longitudinal plan of the present invention;
Fig. 6 shows stretching single steel strand oil cylinder drawing in side sectional elevation of the present invention;
Fig. 7 shows stretching single steel strand oil cylinder drawing in side sectional elevation of the present invention.
Reference numeral: 1. control position plate, 2. steel strand hole, 3. controls position plate screw, 4. cylinder body, 5. oil cylinder base plate, 6. oil cylinder end plate, 7. piston rod, 8. fuel feed hole, 9. oil outlet, 10. without bar oil pocket, 11. have bar oil pocket, 12. oil cylinder screws, 13. oil cylinder inner walls, 14. pistons, 15. steel strand chambeies.
Detailed description of the invention
The even tensioning equipment of anchor cable in the present invention comprises two blocks of oil cylinder control position plates 1 and multiple small-sized stretch-draw oil cylinder, and two blocks of oil cylinder control position plates 1 are respectively in the two ends of stretch-draw oil cylinder.
Described oil cylinder control position plate 1 is circular slab, also can be various regular polygon, such as square, positive pentagon etc., the periphery of this oil cylinder control position plate 1 is equidistantly provided with at least two control position drawing zones, the corresponding stretch-draw oil cylinder of each control position drawing zone, and be equipped with a steel strand hole 2 and be positioned at two control position plate screws 3 around steel strand hole 2, thus, can according to the quantity of steel strand in anchor cable, select the control position plate with right quantity control position drawing zone, as Figure 1-3, be respectively three beams, five bundles, seven bundle anchor cables carry out the schematic diagram of the oil cylinder control position plate stretched.
See Fig. 4-7, described stretch-draw oil cylinder comprises cylinder body 4, described cylinder body 4 is cylindric, its rear end is provided with oil cylinder base plate 5, this oil cylinder base plate 5 is the disk of tool central through hole, the periphery of described oil cylinder base plate 5 is provided with two oil cylinder screws 12 corresponding with described control position plate screw 3, thus, be fixed on the control position drawing zone of one of them oil cylinder control position plate 1 by bolt retainer, the front end of described cylinder body 4 is provided with oil cylinder end plate 6, this oil cylinder end plate 6 is the disk of tool central through hole, the periphery of described oil cylinder end plate 6 is provided with two oil cylinder screws 12 corresponding with described control position plate screw 3, thus, be fixed to by bolt retainer on the control position drawing zone of another oil cylinder control position plate 1.
It is empty that described cylinder body 4 has the annular oil cavity surrounded by cylinder wall between oil cylinder base plate 5 and oil cylinder end plate 6, and a piston 14 is positioned at annular oil cavity, and its piston rod 7 stretches out described cylinder body 4 from oil cylinder end plate 6.
Thus, annular oil cavity in this cylinder body 6 is divided into two sections by piston 14, the side of piston-rodless 7 is without bar oil pocket 10, periphery without bar oil pocket 10 is provided with fuel feed hole 8, there is the side of piston rod 7 for there being bar oil pocket 11, have the periphery of bar oil pocket 11 to be provided with oil outlet 9, described fuel feed hole 8 and oil outlet 9 are connected to hydraulic oil feed system (not shown) by oil pipe.
Wherein, the oil cylinder inner wall 13 of described cylinder body 4 forms the steel strand chamber 15 passed through by steel strand.
Preferably, be provided with oil pressure detector at described fuel feed hole 8 and oil outlet 9 place, a control unit is connected to described oil pressure detector and described hydraulic oil feed system, supplies isobaric hydraulic oil to each cylinder body 4 by hydraulic oil feed system.
Preferably, described hydraulic oil feed system comprises oil pump and at least two distributing valves, the quantity of this distributing valve is equal with the quantity of control position drawing zone, each distributing valve is connected to control unit, thus, described control unit detects the tensioning pulling force obtaining each cylinder body 4 by oil pressure detector, control each distributing valve respectively and carry out closed or open, thus control the tension equalizer of each cylinder body 4.
As can be seen here, control position plate 1 is connected with oil cylinder base plate 5 with oil cylinder screw 12 by control position plate screw 3 by the even tensioning equipment of anchor cable of the present invention, another control position plate 1 is connected with oil cylinder end plate 6, then, single steel strand is each passed through the steel strand chamber 15 in the middle of each cylinder body, in piston rod 7 termination, steel strand are fixed, finally oil pipe is connected with fuel feed hole 8 and oil outlet 9, form whole draw-off gear.
Advantage of the present invention is as follows:
1, every root steel strand of a branch of anchor cable arrange independent oil cylinder and oil circuit, be equivalent to that every root steel strand all have a drawing instrument, according to prestressd anchor cable designing requirement, all oil cylinders are worked independently simultaneously, stretch-draw is stopped when the prestressing force of every root steel strand reaches identical value, carry out prestressing force locking, realize the even stretch-draw of anchor cable.
2, each oil cylinder is evenly positioned at control position plate periphery, thus balances to the tensile stress energy centering of whole anchor cable, achieves overall stretch-draw consistent, more improves tension effects.
It is evident that, above description and record be only citing instead of in order to limit disclosure of the present invention, application or use.Although described in an embodiment and be described in the drawings embodiment, but the present invention do not limit by accompanying drawing example and describe in an embodiment as the optimal mode thought at present to implement the specific examples of instruction of the present invention, scope of the present invention will comprise any embodiment of manual and the appended claim fallen into above.
Claims (2)
1. the even tensioning equipment of anchor cable, comprise two blocks of oil cylinder control position plates and multiple small-sized stretch-draw oil cylinder, two blocks of oil cylinder control position plates are respectively in the two ends of stretch-draw oil cylinder, it is characterized in that:
The periphery of described oil cylinder control position plate is equidistantly provided with at least two control position drawing zones, the corresponding stretch-draw oil cylinder of each control position drawing zone, each control position drawing zone is provided with a steel strand hole and is positioned at two control position plate screws around steel strand hole;
Described stretch-draw oil cylinder comprises cylinder body, and described cylinder body is cylindric, and its rear end is provided with oil cylinder base plate, and front end is provided with oil cylinder end plate;
Described cylinder body has the annular oil cavity surrounded by cylinder wall between oil cylinder base plate and oil cylinder end plate, and a piston is positioned at described annular oil cavity, and the piston rod of described piston stretches out described cylinder body from oil cylinder end plate;
The oil cylinder inner wall of described cylinder body forms the steel strand chamber passed through by steel strand;
The annular oil cavity of this cylinder body is divided into two sections by piston, the side of piston-rodless is without bar oil pocket, periphery without bar oil pocket is provided with fuel feed hole, there is the side of piston rod for there being bar oil pocket, have the periphery of bar oil pocket to be provided with oil outlet, described fuel feed hole and oil outlet are connected to hydraulic oil feed system by oil pipe;
Be provided with oil pressure detector at described fuel feed hole and oil outlet place, a control unit be connected to described oil pressure detector and described hydraulic oil feed system with by hydraulic oil feed system to the isobaric hydraulic oil of each cylinder body supply;
Oil cylinder base plate is the disk of tool central through hole, the periphery of described oil cylinder base plate is provided with two oil cylinder screws corresponding with described control position plate screw, described oil cylinder end plate is the disk of tool central through hole, and the periphery of described oil cylinder end plate is provided with two oil cylinder screws corresponding with described control position plate screw;
Described hydraulic oil feed system comprises oil pump and at least two distributing valves, the quantity of this distributing valve is equal with the quantity of control position drawing zone, each distributing valve is connected to control unit, described control unit is detected by oil pressure detector and obtains the tensioning pulling force of each cylinder body, controls each distributing valve respectively and carries out closed or open and control the tension equalizer of each cylinder body.
2. the even tensioning equipment of anchor cable as claimed in claim 1, it is characterized in that, oil cylinder control position plate is circular slab or regular polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325704.1A CN103422676B (en) | 2013-07-30 | 2013-07-30 | The even tensioning equipment of anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325704.1A CN103422676B (en) | 2013-07-30 | 2013-07-30 | The even tensioning equipment of anchor cable |
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| CN103422676A CN103422676A (en) | 2013-12-04 |
| CN103422676B true CN103422676B (en) | 2016-01-20 |
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| CN201310325704.1A Active CN103422676B (en) | 2013-07-30 | 2013-07-30 | The even tensioning equipment of anchor cable |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594929B (en) * | 2014-12-31 | 2017-04-12 | 中国矿业大学 | Constant-resistance middle connection device of anchor rope |
| CN105862859A (en) * | 2016-05-27 | 2016-08-17 | 昆明军龙岩土工程有限公司 | Thick steel bar prestress anchor rod tensioning method |
| CN112031844A (en) * | 2020-08-03 | 2020-12-04 | 马鞍山市顺泰稀土新材料有限公司 | A even tensioning equipment for anchor rope |
| CN111997672B (en) * | 2020-09-08 | 2022-08-30 | 宁波朗达工程科技有限公司 | Collaborative prestress array anchor rod device and construction method thereof |
| CN112176881A (en) * | 2020-10-16 | 2021-01-05 | 盐城市双强管桩有限公司 | Whole intelligent stretch-draw equipment of restrainting of suspension cable |
| CN112962977B (en) * | 2021-03-17 | 2022-06-07 | 安徽工业大学 | Intelligent adjusting device and method for tension consistency of steel wire rope |
| CN114808718A (en) * | 2022-05-05 | 2022-07-29 | 武汉理工大学 | Drawing instrument for graded tensioning and graded tensioning method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172761Y (en) * | 1993-07-23 | 1994-07-27 | 郝晋升 | Asynchronous traction device |
| CN2203966Y (en) * | 1993-12-04 | 1995-07-26 | 郝晋升 | Single cylinder multi-head jack |
| CN2224194Y (en) * | 1995-06-27 | 1996-04-10 | 郝晋昇 | Group stretch-draw jack |
| JPH08218371A (en) * | 1995-02-14 | 1996-08-27 | Noriji Kaeba | Anchor steel wire tension jack |
| JPH0978835A (en) * | 1995-09-12 | 1997-03-25 | Hikari Kogyo Kk | Pressure diffusion device |
| CN201890739U (en) * | 2011-01-28 | 2011-07-06 | 安徽金星预应力工程技术有限公司 | Three-in-one integrated centre-hole jack |
-
2013
- 2013-07-30 CN CN201310325704.1A patent/CN103422676B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172761Y (en) * | 1993-07-23 | 1994-07-27 | 郝晋升 | Asynchronous traction device |
| CN2203966Y (en) * | 1993-12-04 | 1995-07-26 | 郝晋升 | Single cylinder multi-head jack |
| JPH08218371A (en) * | 1995-02-14 | 1996-08-27 | Noriji Kaeba | Anchor steel wire tension jack |
| CN2224194Y (en) * | 1995-06-27 | 1996-04-10 | 郝晋昇 | Group stretch-draw jack |
| JPH0978835A (en) * | 1995-09-12 | 1997-03-25 | Hikari Kogyo Kk | Pressure diffusion device |
| CN201890739U (en) * | 2011-01-28 | 2011-07-06 | 安徽金星预应力工程技术有限公司 | Three-in-one integrated centre-hole jack |
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| CN103422676A (en) | 2013-12-04 |
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Address after: 710077 Xi'an high tech Zone, Shaanxi Jin Industry Road, No. 82 Applicant after: Xi'an Research Institute, CCTEG Address before: 710077 Xi'an high tech Zone, Shaanxi Jin Industry Road, No. 82 Applicant before: China Coal Technology & Engineering Group Xi'an Research Institute |
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Free format text: CORRECT: APPLICANT; FROM: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RESEARCH INSTITUTE TO: XI'AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY + ENGINEERING GROUP CO., LTD. |
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