CN102692171B - Tensioning elongation value measuring device for prestressed tensioning construction - Google Patents
Tensioning elongation value measuring device for prestressed tensioning construction Download PDFInfo
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- CN102692171B CN102692171B CN201210197635.6A CN201210197635A CN102692171B CN 102692171 B CN102692171 B CN 102692171B CN 201210197635 A CN201210197635 A CN 201210197635A CN 102692171 B CN102692171 B CN 102692171B
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- tensioning
- rule
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- sleeve pipe
- stretch
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Abstract
The invention discloses a tensioning elongation value measuring device for prestressed tensioning construction, which is mainly used for measuring a tensioning elongation value of a steel strand and measuring a piston elongation value of a tensioning jack in the prestressed tensioning construction. The tensioning elongation value measuring device comprises a graduated scale device and a pointer device, wherein the graduated scale device comprises a graduated scale and a base; the base is fixedly connected with the initial scale end of the graduated scale and is connected with a rear side end cover of the tensioning jack; the graduated scale is parallel to the axis of the tensioning jack; the pointer device comprises a pointer and a sleeve; one end of the pointer is fixedly connected with the outer side wall of the sleeve, and the pointer is perpendicular to the axis of the sleeve; the sleeve is sleeved at the exposed end of the steel strand to be tensioned, which penetrates through the tensioning jack; the pointer is contacted with the graduated scale; and a locking mechanism is arranged on the sleeve. The tensioning elongation value measuring device can be used for measuring the tensioning elongation value accurately and in real time, thus greatly improving the construction quality and the construction efficiency as well as the construction safety.
Description
Technical field
The present invention relates to the stretching extension value measurement mechanism that a kind of tensioning construction is used, be mainly used in measuring in pre-stress construction steel strand wires elongation value of stretching and retraction value, measure the piston stretch value of stretch-draw jack.
Background technology
In prior art, prestress product adopts and usually exists when jack tension because operating improper or material cause occurs stripped thread or steel strand wires are disrumpent feelings, the accident potential such as cause oil cylinder detonation, lifting jack set bolt to fly out hurting sb.'s feelings because of misoperation, therefore workmen will be away from lifting jack when stretch-draw, especially to avoid people's hand or head in the time of stretch-draw, to appear at lifting jack rear end, wooden or irony fender wall also to be set in lifting jack rear end in the time of jack tension, avoid intermediate plate, steel strand wires, lifting jack set bolt etc. to fly out and hurt sb.'s feelings.To adopt hand-held Steel Ruler to measure and measure at present elongation value of stretching, more dangerous and cannot measure in real time when measurement, must wait until that pulling anchor cable stage operation completes, after oil pump fuel cut-off, just can measure, stretching construction efficiency is lower, and cannot find in time, process stretch value off-gage phenomenon, cause affecting construction quality.In addition, in prior art because measuring in real time the elongation of stretch-draw jack, if two side skin frictions do not wait or the not equal reason of oil pump feed speed in stretching process, easily cause the jack cylinder elongation of one end to exceed standard, causing lifting jack roof fall to damage, there is safety and hidden danger of quality in flow chart.
Summary of the invention
For the above-mentioned defect existing in prior art, the invention provides a kind of measurement mechanism that can in real time, accurately measure elongation value of stretching, utilize it can greatly improve construction quality and operating efficiency, raising working security.
The present invention is achieved by the following technical solution: the stretching extension value measurement mechanism that a kind of tensioning construction is used, comprise rule device and indicator device, described rule device comprises a rule and the base being fixedly connected with the start index end of described rule, described base is connected with the rear side end cap of stretch-draw jack, and described rule is parallel with the axis of stretch-draw jack; Described indicator device comprises a pointer and a sleeve pipe, one end of described pointer be fixedly connected with the lateral wall of described sleeve pipe and described pointer vertical with the axis of described sleeve pipe, described casing pipe sleeve is located at the exposed junction that is located in steel strand wires to be tensioned in stretch-draw jack, described pointer contacts with described rule, and described sleeve pipe is provided with latch mechanism.
Principle of work of the present invention is: the outboard end that rule is connected to stretch-draw jack by base cover and rule parallel constant to ensure reading benchmark with the axis of stretch-draw jack all the time, and pointer is fixed on steel strand wires by connected sleeve pipe and by latch mechanism, the graduated side contacts of pointer and rule band, in the time that stretch-draw jack is worked, pointer and connected sleeve pipe move with the continuous elongation of steel strand wires thereupon, and the distance moving can go out by real-time direct-reading on rule.According to the theoretic elongation of steel strand wires of calculating in advance, can real-time monitored elongation value of stretching whether overproof and jack piston whether exceed permission maximal value.
Take convenient and be convenient to adjust for the ease of survey instrument, the bottom of described base is provided with connected high-strength magnet, and the rear side end that described base is adsorbed on stretch-draw jack by high-strength magnet covers.High-strength magnetic Tie Tong crosses the rear side end that rule device is fixed on lifting jack by magnetic force and covers, can ensure fixing reliable, be convenient to again the dismounting of rule device, in the time need to measuring other the stretch value of prestress product, can easily measurement mechanism be disassembled for elsewhere, meanwhile, in the time that torsion among a small circle appears in steel strand wires in stretching process, can make rule press close to total indicator reading by adjusting rule device easily.
In order further to improve the convenience of operation, described base is steel angle structure part, described rule is fixedly connected on one of them flank of described base, and described high-strength magnet is connected on another flank of described base, and the start index of described rule is concordant with the end face of high-strength magnet.Steel angle structure part can ensure that rule keeps vertical with the rear side end cap of stretch-draw jack, avoids occurring reading error.
The latch mechanism being located on sleeve pipe of the present invention can adopt any sleeve pipe that can make of the prior art to be fixed on the version on steel strand wires, consider the simple and reliability of structural design, the described latch mechanism being located on sleeve pipe is the clamping screw being arranged on casing wall, and described sleeve pipe is fixedly connected with steel strand wires by clamping screw.By screwing clamping screw, reach sleeve pipe is fixed on to the object on steel strand wires thereby can make clamping screw end be pressed on steel strand wires, in the time of needs dismounting or moving hand device, can make easily itself and steel strand wires unclamp by unscrewing clamping screw.
The invention has the beneficial effects as follows: the present invention is simple in structure, can read in real time the stretch value of elongation value of stretching and stretch-draw jack, and the retraction value of energy direct-reading steel strand wires, be convenient to check, thereby effectively ensure stretch-draw quality, and can effectively avoid the accident potential such as stretch-draw jack roof fall.Simple installation of the present invention, measures conveniently and can effectively improve operating efficiency, accelerating construction progress; While utilizing the present invention to measure, because workmen can, away from lifting jack, therefore can effectively ensure workmen's personal safety.
Brief description of the drawings
Fig. 1 is the structural representation in the specific embodiment of the invention;
Fig. 2 is the A portion enlarged diagram in Fig. 1;
Fig. 3 is the B portion enlarged diagram in Fig. 1;
Fig. 4 is the structural representation of the rule device in the present invention;
Fig. 5 is the schematic top plan view of Fig. 4;
Fig. 6 is the structural representation of the indicator device in the present invention;
Fig. 7 is that schematic diagram is looked on a left side of Fig. 6;
In figure, 1, steel strand wires, 2, stretch-draw jack, 3, rule, 4, base, 5, high-strength magnet, 6, bolt, 7, pointer, 8, sleeve pipe, 9, clamping screw.
Embodiment
Below by the embodiment of indefiniteness and the present invention is further illustrated by reference to the accompanying drawings:
As shown in accompanying drawing 1-7, the stretching extension value measurement mechanism that a kind of tensioning construction is used, it comprises rule device and indicator device.Described rule device comprises a rule 3 and the base 4 being fixedly connected with the start index end of described rule 3.In the present embodiment, rule 3 adopts straight Steel Ruler, and base 4 is steel angle structure part, and the start index end of rule 3 is fixedly connected on the outside of one of them flank of base 4, and rule 3 can be bolted or bonding or other connected modes are connected with base 4.The rear side end that the base 4 of this rule device is arranged on stretch-draw jack 2 covers and ensures that rule 3 is parallel with the axis of stretch-draw jack 2, ensures that rule is vertical with the rear side end cap of stretch-draw jack.Base 4 can be connected with the rear side end cap of stretch-draw jack 2 by connected modes such as bolts, for the ease of the dismounting of graduation apparatus, in the present embodiment, be provided with a high-strength magnet 5 in the bottom of another flank of base 4, high-strength magnet 5 is connected with base 4 by bolt 6, and the start index of rule 3 is concordant with the end face of high-strength magnet 5.The rear side end that base 4 is adsorbed on stretch-draw jack 2 by high-strength magnet 5 covers.
Described indicator device comprises a pointer 7 and a sleeve pipe 8, and pointer 7 is elongate articles, and the sidewall of sleeve pipe 8 is provided with clamping screw 9.One end of pointer 7 be welded on the lateral wall of sleeve pipe 8 and pointer 7 vertical with the axis of sleeve pipe 8, sleeve pipe 8 is sleeved on and is located in the exposed junction of the interior steel strand wires 1 to be tensioned of stretch-draw jack 2 and is fixedly connected with steel strand wires 1 by clamping screw 9, and pointer 7 contacts with rule 3.
When the actual use of the present invention, after lifting jack frock installs, the rear side end that rule device is adsorbed on to stretch-draw jack 2 by high-strength magnet 5 covers, indicator device is sleeved on end steel strand wires 1 and by clamping screw 9 and steel strand wires locking by sleeve pipe 8, pointer 7 contacts with the surperficial graduated one side of rule 3, along with the stretching of stretch-draw jack 2, the piston of lifting jack extends, drive instrument anchor ring and steel strand wires 1 extend, pointer 7 is at rule 3 surface slidings, workmen can direct-reading in the position away from stretch-draw jack goes out the reading at each reference mark of stretch-draw, and monitor in real time elongation value of stretching and whether exceed standard.In stretching process, if steel strand wires exist torsion among a small circle, can press close to total indicator reading by slippage rule, be parallel to all the time the axis of stretch-draw jack because rule device has ensured rule, therefore there will not be measured deviation when shift scale chi device.
Other parts of the present embodiment adopt prior art, do not repeat them here.
The present invention is simple in structure, easy for installation, it is time saving and energy saving to measure, the stretch value of lifting jack and the stretch value of steel strand wires can synchro measures, after anchoring the retraction value of steel strand wires also can direct-reading out, stretch value that can real-time inspection steel strand wires whether with theoretical value correspondence, overproof can discovery in time, piston that can Real Time Observation stretch-draw jack stretches out whether exceed permission maximal value, avoids damage of jack.When simultaneous tension, survey crew is away from lifting jack, without potential safety hazard.
Claims (4)
1. the stretching extension value measurement mechanism that tensioning construction is used, it is characterized in that: comprise rule device and indicator device, described rule device comprises a rule (3) and the base (4) being fixedly connected with the start index end of described rule (3), described base (4) is connected with the rear side end cap of stretch-draw jack (2), and described rule (3) is parallel with the axis of stretch-draw jack (2); Described indicator device comprises a pointer (7) and a sleeve pipe (8), one end of described pointer (7) be fixedly connected with the lateral wall of described sleeve pipe (8) and described pointer (7) vertical with the axis of described sleeve pipe (8), described sleeve pipe (8) is set in the exposed junction that is located in steel strand wires to be tensioned in stretch-draw jack (2), described pointer (7) contacts with described rule (3), and described sleeve pipe (8) is provided with latch mechanism.
2. the stretching extension value measurement mechanism that tensioning construction according to claim 1 is used, it is characterized in that: the bottom of described base (4) is provided with connected high-strength magnet (5), the rear side end that described base (4) is adsorbed on stretch-draw jack (2) by high-strength magnet (5) covers.
3. the stretching extension value measurement mechanism that tensioning construction according to claim 2 is used, it is characterized in that: described base (4) is steel angle structure part, described rule (3) is fixedly connected on one of them flank of described base (4), described high-strength magnet (5) is connected on another flank of described base (4), and the start index of described rule (3) is concordant with the end face of high-strength magnet (5).
4. the stretching extension value measurement mechanism of using according to the tensioning construction described in claim 1 or 2 or 3, it is characterized in that: described in be located at latch mechanism on sleeve pipe (8) for being arranged on the clamping screw (9) on sleeve pipe (8) wall, described sleeve pipe (8) is fixedly connected with steel strand wires by clamping screw (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210197635.6A CN102692171B (en) | 2012-06-15 | 2012-06-15 | Tensioning elongation value measuring device for prestressed tensioning construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210197635.6A CN102692171B (en) | 2012-06-15 | 2012-06-15 | Tensioning elongation value measuring device for prestressed tensioning construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102692171A CN102692171A (en) | 2012-09-26 |
| CN102692171B true CN102692171B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210197635.6A Expired - Fee Related CN102692171B (en) | 2012-06-15 | 2012-06-15 | Tensioning elongation value measuring device for prestressed tensioning construction |
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| CN (1) | CN102692171B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841577B (en) * | 2016-03-23 | 2018-08-21 | 河南省水利勘测设计研究有限公司 | The method of accurate measurement prestressing force aqueduct circumferential direction or vertical prestressing bar amount of recovery |
| CN113654439A (en) * | 2021-08-19 | 2021-11-16 | 中钢集团郑州金属制品研究院股份有限公司 | Displacement measuring device of tensioning assembly |
| CN113482243A (en) * | 2021-08-19 | 2021-10-08 | 戴邵雷 | Detachable prestressing force carbon fiber ground tackle |
| CN114152170A (en) * | 2021-11-17 | 2022-03-08 | 中铁五局集团路桥工程有限责任公司 | Tramcar steel rail tensile displacement measurement method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201095580Y (en) * | 2007-08-30 | 2008-08-06 | 中铁二十三局集团有限公司 | Stretching jack |
| CN202116235U (en) * | 2011-05-19 | 2012-01-18 | 中铁十局集团有限公司 | Fore-cramp jack |
| CN202599295U (en) * | 2012-06-15 | 2012-12-12 | 中铁十局集团有限公司 | Tensioning extension value measurement device for prestress tensioning construction |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593208A (en) * | 1982-06-29 | 1984-01-09 | Kawasaki Steel Corp | Calibrating device for coupling length measuring device |
-
2012
- 2012-06-15 CN CN201210197635.6A patent/CN102692171B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201095580Y (en) * | 2007-08-30 | 2008-08-06 | 中铁二十三局集团有限公司 | Stretching jack |
| CN202116235U (en) * | 2011-05-19 | 2012-01-18 | 中铁十局集团有限公司 | Fore-cramp jack |
| CN202599295U (en) * | 2012-06-15 | 2012-12-12 | 中铁十局集团有限公司 | Tensioning extension value measurement device for prestress tensioning construction |
Non-Patent Citations (3)
| Title |
|---|
| JP昭59-3208A 1984.01.09 |
| 新型前卡式千斤顶快速张拉施工技术;杨基好等;《安徽建筑》;20111231(第6期);第67-70页 * |
| 杨基好等.新型前卡式千斤顶快速张拉施工技术.《安徽建筑》.2011,(第6期),第67-70页. |
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| CN102692171A (en) | 2012-09-26 |
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