CN1034996A - Clipping cable tension analyzer and calibrating table - Google Patents
Clipping cable tension analyzer and calibrating table Download PDFInfo
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- CN1034996A CN1034996A CN 88107241 CN88107241A CN1034996A CN 1034996 A CN1034996 A CN 1034996A CN 88107241 CN88107241 CN 88107241 CN 88107241 A CN88107241 A CN 88107241A CN 1034996 A CN1034996 A CN 1034996A
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- cable wire
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- clipping
- analyzer
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Abstract
A kind of can the test various structures in cable wire suffered dynamic and " clipping cable tension analyzer " static tension force reach " calibrating table ".Wherein " clipping cable tension analyzer " mainly is made up of girder, afterburning frame, grip roller, pressure transducer, amount of deflection analyzer etc.It can carry out tension test at any position that does not change original structure, be not clamped in various cable wire under the situation of removal original structure load, and cable wire is had no effect." calibrating table " is made up of the electric oil pressure lifting jack of rectangular frame, band through hole, the drum type brake pressure transducer of band through hole etc., and it can apply tension force to various cable wire, and " clipping cable tension analyzer " carried out dynamically and static demarcating.
Description
The invention belongs to field test instrument, be mainly used in the various cable wires that detect in the engineering structure and the reality of other gentle rope and be subjected to tension force size and Changing Pattern thereof.
Because the difficulty on the mechanics, the designing and calculating of present various flexible cable structure (as cableway, suspension bridge, elevator, suspended roof, high voltage transmission line etc.) all adopts approximate formula, to many be that dynamic loading value in the structure of main element can only be made rough estimation with the cable wire.In order to improve design, guarantee that safe, the normal need of structure are measured by the size of tension force and Changing Pattern in fact in the course of the work to cable wire in the existing structure, to grasp the actual loading situation in the structure.But, do not wish not only the cable wire that destroys (cut-out) but also have simultaneously, so make this test job become a difficult problem because of general whole its load of removal of the cable wire in the structure.Domestic and international interrelated data is not by retrieval found the patent report of head it off so far.The publication that has both at home and abroad also once had the introduction of " steel cable stretching force test " aspect.But all because of low precision, can not be used for reasons such as dynamic tension test, means of testing be inapplicable, and can not actually deal with problems, so it is dynamic to never have a kind of perfect cable wire, the test macro of static pulling force.
The objective of the invention is to do not changing original structure, not under the situation of removal original structure load, with a cover special " the clipping cable tension analyzer " that design test macro of reaching " calibrating table " accurately measure suffered dynamic and static pulling force and the Changing Pattern thereof of cable wire in the original structure.
The present invention adopts the three-point bending principle, promptly selects the afterburning (see figure 1) of three points not far from one another on the cable wire that is subjected to stretching force again, makes this section cable wire mid point produce amount of deflection δ or knuckle α (general α is less than 2).Tension force T is big more, and is also big more for reaching the required power P of certain certain amount of deflection δ value.As long as set up the relation between P and the T, then after causing certain amount of deflection δ, can find out the T value by mensuration to the P value.The present invention is by " clipping cable tension analyzer " and calibrating table " is formed " that can be clamped in any position of cable wire.Clipping cable tension analyzer " characteristics be: have two grip rollers to contact; afterburning frame is on cable wire, and the afterburning screw of adjusting on the girder just forces afterburning frame 3 stressed situations of the down pull-shaped one-tenth detected steel cable of the detected steel cable mid point of two grip roller interludes with detected steel cable.In " the tight dynameter of clipping cable wire " inside one pressure transducer is arranged.Do not changing original structure, clipping cable tension analyzer can not be clamped in any part of detected steel cable under the situation of removal original structure load, and the influence that the mensuration of the cable wire amount of deflection that causes is not changed by main beam deformation and rope diameter also.The characteristics of " calibrating table " are: rectangular frame, hydraulic jack with holes, drum type brake pressure transducer with holes, the cable wire ， And that various models can both be passed in the center of the link stopper of band thrust bearing etc. can apply tension force to cable wire.Sample that ， And can directly get cable wire to be measured carries out dynamic or static demarcation to allow each xsect of cable wire to produce relative rotation in applying the process of tension force.
Principle of work of the present invention is: get at the scene one section with the rope diameter that need do in the tension detection structure, the cable wire that model is identical (long about 6 meters), the cable wire sample of being got to be measured is passed the cable wire clamp (23) of " demarcation " platform, the link stopper (24) of band thrust bearing, rectangular frame (25), electric oil pressure lifting jack (26), in the hole of drum type brake pressure transducer (27) etc., and under the situation of stretching substantially (tension force is very little), cable wire clamp (23) is clamped in the two ends of cable wire sample, and respectively with the plate washer (24) of band thrust bearing and (28) near.Because electric oil pressure lifting jack (26) connects together with the crossbeam of the framework (25) of band thrust bearing, so be in stretching state substantially through above-mentioned installation back tightwire sample, this moment " clipping cable tension analyzer " (31) are contained in and start oil pump on the cable wire sample then, make the piston of electric oil pressure lifting jack (26) protruding, the two ends of invar rope sample are blocked by cable wire clamp (23), so cable wire must be subjected to the tension force from electric oil pressure lifting jack (26), its numerical value can be recorded through electric wire strain gauge by drum type brake pressure transducer (27), simultaneously can be corresponding for reaching the desired power P value of certain certain amount of deflection δ value (or clipping cable tension analyzer export strain stress) by reading on the electric wire strain gauge that joins with " clipping cable tension analyzer " (31), so just set up the P-T relation curve of this kind cable wire, also be appreciated that in addition: in the process of whole erection sample, the piston of electric oil pressure lifting jack (26) will fall back on minimum position And and will be close to each other with the baffle plate (28) of drum type brake pressure transducer (27) and band thrust bearing.The specific procedure of demarcating is: earlier the cable wire sample is applied certain force of strain, mix up clipping cable tension analyzer (31) and then classification and add hightension, add behind the hightension output valve of recording drum formula pressure transducer (27) and " clipping cable tension analyzer " (31) simultaneously, each is on the P-T curve a bit to such output valve at every turn.Link each point and promptly get desired P-T curve, as shown in Figure 7.According to the reality that the P value of measuring in the scene can draw cable wire tension force T is arranged again by this curve.The method of dynamic calibration is: earlier cable wire is tensioned to predetermined tension T, " clipping cable tension analyzer " (31) is contained in the afterburning screw (13) that cable wire sample Shang And tightens among Fig. 3 makes cable wire be folded into predetermined amount of deflection δ.In predetermined tension variation scope, take off bone Ы iron chains ィ 6 then by the valve gull scheme Lai Duo that regulates electric oil pump) thrust, to reach the purpose ， And record data of being wanted that change the suffered tension force of cable wire.After the overtension recurrent fluctuations, can realize dynamic calibration.The principle of work of " clipping cable tension analyzer " is (referring to Fig. 3 and Fig. 4): grip roller (1) and bearing (6) etc. are formed support part, the interior And of V-type groove that these parts are loaded on girder (19) two ends is fixed on the girder by bolt (11) and nut (8), this moment, the lower end of afterburning frame strode across girder (19), so baffle plate (15) can be fused with screw (on the figure draw) and afterburning frame (5) along the groove of afterburning frame (5) the lower end ， And that packs into.Pressure transducer (16) is contained in the intraperitoneal of girder (19), and screw (17) makes the top of pressure transducer (16) near girder (19) pressure transducer (16) and girder (19) the ， And that connects together by the top circular hole (18) that passes.Screw in the middle part of the terminal afterburning screw (13) that has steel ball after baffle plate (15) and afterburning frame (5) binding passes baffle plate (15) can withstand on the bottom of pressure transducer (16), rotating screw this moment (13) will force afterburning frame (5) to descend with respect to two grip rollers (1), make the crooked amount of deflection δ that produces of cable wire (2) simultaneously, the P power among Fig. 1 is added on cable wire.The suffered P power in cable wire (2) middle part is numerically equal to pressure transducer (16) and goes up suffered pressure, thus the resistance strain gage that is pasted by pressure transducer (16) can measure the amount of bow (midway deflection value δ) of the size while cable wire (2) of P power will be definite by cable wire amount of deflection analyzer (4).Cable wire amount of deflection analyzer (4) is actually a large displacement sensor, and its principle of work is by shown in Figure 4.When sounding rod (20) is subjected to the compressing (only needing the power less than 0.3 kilogram) of cable wire and when descending, steel disc (21) bends, by resistor disc R
1R
2Strain value promptly know the slippage of sounding rod (20).Show that in Fig. 3 cable wire amount of deflection analyzer (4) is contained on the support (3), support (3) is contained in again on two bearings (6), and this structure is not to be subjected to girder (19) because of the crooked influence that produces distortion for the mensuration that makes amount of deflection.Tighten afterburning screw (13) when carrying out tension detection and make that amount of deflection reaches setting (for example 5mm) in the cable wire, measure the P value of this moment simultaneously, according to three-point bending principle shown in Figure 1, the P value is big more, and then the interior tension force T of cable wire is also big more.As long as can accurately determine P-T relation (demarcate and determine), then can determine the tension force T value of cable wire immediately by the P that records.
" clipping cable tension analyzer " and calibrating table " description of drawings: Fig. 1 is the three-point bending schematic diagram, and T is tension force (pulling force) among the figure, and P is for reaching the desired power of a certain amount of deflection δ (or knuckle α).Fig. 2 is clipping cable tension analyzer figure, and Fig. 3 is that each parts of clipping cable tension analyzer are formed figure, and wherein (1) is grip roller (about each one); (2) be detected steel cable; (3) be support; (4) be cable wire amount of deflection analyzer; (5) be afterburning frame; (6) be the bearing of roller (1); (7), (8), (9), (10) are nut and packing ring; (11) be the set bolt of bearing (6); (12) be the axle of roller (1); (13) be afterburning screw; (14) by the steel ball of riveting at afterburning screw (13) end; (15) be baffle plate (there is the screw that matches with afterburning screw at its middle part); (16) be pressure transducer; (17) be gib screw; (18) be the circular hole at girder middle part; (19) be girder.Fig. 4 is a cable wire amount of deflection analyzer schematic diagram: wherein (20) are sounding rods; (21) be steel disc; (22) be resistor disc R
1R
2Fig. 5 calibrating table figure (wherein component serial number is identical with Fig. 6).Fig. 6 is that the parts of calibrating table are formed figure), wherein (23) are the cable wire clamps; (24) and (28) be the block of band plane thrust bearing; (25) be rectangular frame; (26) be electric oil pressure lifting jack (having through hole can hold cable wire in the middle part of it passes); (27) be the drum type brake pressure transducer; (29) be the center line of cable wire; (30) be supporting carriage; (31) be " clipping cable tension analyzer " to be calibrated.Fig. 7 is the static demarcating curve map.
It is easy to use that this " clipping cable tension analyzer " reaches " caliberating device ", and the measuring accuracy height can reach the test error of quiet tension force less than ± 0.5% at present. And and dress are convenient, and cable wire is had no effect. If be used for the tension test of bicable tramway ropeway carrying-rope, then " clipping steel formula tension draftomter " can not affect having free passage of mine car after installing, and adding a wheel on the top of boosting frame (5) can carry out tension test to the cable wire that itself moves. So all cable wires " clipping cable tension analyzer " that move and do not move itself are reached the absolute value that " calibrating table " can both measure its tension force. The present invention passes through at Community in Baiyunshan, Guangzhou single line passenger aerial ropeway, Kunming, Yunnan hot spring single line passenger aerial ropeway, on the elder brother's steel of Yunnan after the actual test of 8 on-the-spot cableways such as factory's bicable tramway, all with measuring accuracy height, the result of use favorable comment that is subjected to each tested cableway unit such as good.
Claims (6)
1, a kind of clipping cable tension analyzer of forming by grip roller (1), cable wire amount of deflection analyzer (4), afterburning frame (5), pressure transducer (16), girder (19) etc., it is characterized in that to be clamped in any part of any dynamic and static cable wire and do not change, do not influence the work of original structure.
2, clipping cable tension analyzer according to claim 1 is characterized in that load-sensing unit (pressure transducer) is in girder inside.
3, the influence that clipping cable tension analyzer according to claim 1, the mensuration that it is characterized in that the cable wire amount of deflection are not changed by main beam deformation and rope diameter.
4, a kind of electric oil pressure lifting jack (26) of being with through hole by link stopper (24) and (28), the rectangular frame (25) of band thrust bearing, the drum type brake pressure transducer (27) of band through hole waits the clipping cable tension analyzer calibrating table of composition, and the Gang Suo And that it is characterized in that loading onto various models can apply tension force to it and demarcate.
5, clipping cable tension analyzer calibrating table according to claim 4 is characterized in that allowing in applying the process of tension force each xsect of cable wire to produce relative rotation.
6, clipping cable tension analyzer calibrating table according to claim 4, the sample that it is characterized in that directly getting cable wire to be measured is done dynamically or static demarcating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107241 CN1034996A (en) | 1988-10-14 | 1988-10-14 | Clipping cable tension analyzer and calibrating table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107241 CN1034996A (en) | 1988-10-14 | 1988-10-14 | Clipping cable tension analyzer and calibrating table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1034996A true CN1034996A (en) | 1989-08-23 |
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ID=4834578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88107241 Pending CN1034996A (en) | 1988-10-14 | 1988-10-14 | Clipping cable tension analyzer and calibrating table |
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|---|---|
| CN (1) | CN1034996A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644615B (en) * | 2008-08-04 | 2011-08-10 | 绵阳市奇石缘科技有限公司 | Tube diameter variable clamping pressure sensor |
| CN103257013A (en) * | 2013-05-21 | 2013-08-21 | 武汉大学 | High-voltage transmission conductor tension detection device |
| CN104502012A (en) * | 2014-12-24 | 2015-04-08 | 哈尔滨工业大学 | Guide rope tension measuring device |
| CN105352722A (en) * | 2015-12-15 | 2016-02-24 | 中交一公局第三工程有限公司 | Suspension bridge cord clip anti-slip testing device |
| CN108613771A (en) * | 2018-06-21 | 2018-10-02 | 柳州欧维姆工程有限公司 | A kind of magnetic flux transducer caliberating device and method |
-
1988
- 1988-10-14 CN CN 88107241 patent/CN1034996A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644615B (en) * | 2008-08-04 | 2011-08-10 | 绵阳市奇石缘科技有限公司 | Tube diameter variable clamping pressure sensor |
| CN103257013A (en) * | 2013-05-21 | 2013-08-21 | 武汉大学 | High-voltage transmission conductor tension detection device |
| CN103257013B (en) * | 2013-05-21 | 2015-07-15 | 武汉大学 | High-voltage transmission conductor tension detection device |
| CN104502012A (en) * | 2014-12-24 | 2015-04-08 | 哈尔滨工业大学 | Guide rope tension measuring device |
| CN105352722A (en) * | 2015-12-15 | 2016-02-24 | 中交一公局第三工程有限公司 | Suspension bridge cord clip anti-slip testing device |
| CN108613771A (en) * | 2018-06-21 | 2018-10-02 | 柳州欧维姆工程有限公司 | A kind of magnetic flux transducer caliberating device and method |
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