CN204085746U - Based on force measuring device in the drag-line of type vibration wire surface strain meter - Google Patents
Based on force measuring device in the drag-line of type vibration wire surface strain meter Download PDFInfo
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- CN204085746U CN204085746U CN201420475679.5U CN201420475679U CN204085746U CN 204085746 U CN204085746 U CN 204085746U CN 201420475679 U CN201420475679 U CN 201420475679U CN 204085746 U CN204085746 U CN 204085746U
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Abstract
The utility model discloses a kind of based on force measuring device in the drag-line of type vibration wire surface strain meter, a kind of based on force measuring device in the drag-line of type vibration wire surface strain meter, comprise 4 semicircle steel collar, two type vibration wire surface strain meters, the diameter of steel collar should match with the diameter of drag-line, 4 semicircle steel collar are supporting between two, be placed on cable body, the structure glue for steel collar being pasted on cable body is provided with inside each steel collar and between cable body outside surface, bolted is utilized between the supporting semicircle collar, and certain space should be left, so that the energy cooperative transformation when drag-line cross section under tension shrinks, two type vibration wire surface strain meters lay respectively at the both sides of cable body, and be fixedly attached to and be positioned in the steel collar of homonymy.This device only needs type vibration wire surface strain meter, steel collar and bolt to test, and make simple and easy, easy to operate, working-yard very easily realizes.
Description
Technical field
The utility model relates to a kind of device measuring drag-line internal force, particularly relates to the device that string props up the measurement drag-line internal force of structure.
Background technology
Prestressed steel structure has been widely used in all kinds of large public building, drag-line is as the core component in most of prestressed steel structure, the numerical value of its internal force has vital impact for the performance of total, on the one hand, in the construction stage that structure is different, Suo Liying reaches different controlling values, and the process that simultaneously Suo Li reaches design load can have conclusive impact to the serviceability of structure, and therefore the drag-line Internal Force Monitoring of construction stage is very important; On the other hand, in the operational phase of structure, can there is lax and loss of prestress in drag-line, thus have a negative impact to the security performance of structure, and therefore the cable force monitoring of operational phase is also significant.In sum, Monitoring and Controlling is carried out to the drag-line internal force in prestressed steel structure and have very important meaning.
The accurate fast measurement of Suo Li is the problem that slip-stick artist wants to solve in a hurry always, many scholars have carried out large quantifier elimination and exploration to cable force measurement, current cable force measurement method is mainly divided into following two large classes: (1) direct method, comprises lifting jack oil pressure gauge method, pressure (drawing) force snesor method, three-point bending method, magnetic flux method (EM method).Wherein lifting jack oil pressure gauge method determines Suo Li by the oil pressure measuring stretch-draw jack, easy and simple to handle, but is only applicable to the stretching construction stage; Pressure (drawing) force snesor method measures Cable power by punching pressure (drawing) force snesor of connecting on drag-line, the method precision is high, but sensor cost is high, service condition requires high, sensor deadweight is simultaneously larger, and there is drift in Output rusults, applies not extensive in Practical Project and experimental study; Three-point bending method carries out cable force measurement based on the response of drag-line under the external force of face, and the method is easy and simple to handle, but is only suitable for small bore and lower-prestressed drag-line; The principle that magnetic flux method (EM method) changes with internal force based on drag-line magnetic permeability, adopt electromagnetic sensor to measure Suo Li, the method is simple and easy to do, applicability is strong, reliable and stable, is applicable to construction and operational phase, but precision aspect cannot reach ideal effect, cost is higher simultaneously.(2) indirect method, involving vibrations ripple method, rumble spectrum method.Wherein vibrating wave method influence factor is many, not mature enough, is applicable to the cable of making somebody a mere figurehead or cable, vibration frequency method carries out cable force measurement based on there is this principle of correlativity between the natural frequency of vibration of drag-line and Suo Li, this is simple to operate, cost is low, be applicable to construction stage and operational phase, but the measuring accuracy of the method controls primarily of two aspects, first aspect is the measurement of inhaul cable vibration characteristic, second aspect is the relation of Suo Li and drag-line self-vibration characteristic, in second aspect, the bendind rigidity of drag-line and the identification of rope segment boundary condition can have an impact to precision, but prop up for structure for string, rope section is general shorter, boundary condition is difficult to accurate identification, the research of the bendind rigidity aspect of drag-line is less simultaneously, the estimation that the many employings of actual measurement are rough, several aspect all can produce larger impact to the precision of the method above.
Utility model content
For solving the problem, the purpose of this utility model is force measuring device in the drag-line that proposes a kind of not only economy and facility but also can ensure certain measuring accuracy.The utility model takes following technical scheme:
A kind of based on force measuring device in the drag-line of type vibration wire surface strain meter, comprise 4 semicircle steel collar, two type vibration wire surface strain meters, the diameter of steel collar should match with the diameter of drag-line, it is characterized in that, 4 semicircle steel collar are supporting between two, be placed on cable body, the structure glue for steel collar being pasted on cable body is provided with inside each steel collar and between cable body outside surface, bolted is utilized between the supporting semicircle collar, and certain space should be left, so that the energy cooperative transformation when drag-line cross section under tension shrinks, two type vibration wire surface strain meters lay respectively at the both sides of cable body, and be fixedly attached to and be positioned in the steel collar of homonymy.
The utility model has following advantage: (1) this device only needs type vibration wire surface strain meter, steel collar and bolt to test, make simple and easy, easy to operate, working-yard very easily realizes, in addition, compare other method of testings, this proving installation cost of manufacture is lower, has good economy; (2) this device is connected with cable body reliably, compatibility of deformation is better, by steel collar and symmetrically arranged two type vibration wire surface strain meters, can obtain cable body comparatively comprehensively deformation, and then the internal force of cable body cross section entirety can be obtained, there is higher precision.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
In figure: 1-type vibration wire surface strain meter, 2-steel collar, 3-fastening bolt, 4-drag-line cable body.
Embodiment
For content of the present utility model and feature can be further illustrated, now accompanying drawing is coordinated to describe its embodiment in detail as follows:
As shown in accompanying drawing 1 ~ 3, this device is made up of steel collar 2, type vibration wire surface strain meter 1 and fastening bolt 3.
Steel collar 2 should make according to drag-line specification, its size should with the consistent size of drag-line cable body 4, to ensure that steel collar 2 and cable body 4 can realize fitting tightly, but two half rounds collars 2 should leave certain space in junction, because cross-sectional constriction after drag-line 4 tension, if two half rounds collars 2 fit tightly completely, then the distortion of steel collar 2 is resisted in the round-shaped meeting of steel collar 2 well, likely cause the drawing crack of glue, thus make steel collar 2 can not with cable body common eigenvector, if and leave certain space, then there is space two the half rounds collar 2 junctions, do not formed complete round-shaped come resistance to deformation, so the common eigenvector of steel collar 2 and cable body 4 can be realized preferably.
First adopt AB structure glue (remodeling acrylate adhesive) by steel collar 2 and cable body 4 compact siro spinning technology during enforcement, carry out just tightening to fastening bolt 3 before glue forms intensity, just tighten and ensure cable body 4 and steel collar 2 compact siro spinning technology, do not tighten completely, if the glue between steel collar 2 and cable body 4 can be extruded too much because now tighten completely, thus affect quality of connection.Formed after intensity until glue, carry out tightening end to fastening bolt 3, and adopt method that is gluing or welding to be firmly connected with steel collar 2 by type vibration wire surface strain meter 1.Reading device is adopted to read the initial frequency value of type vibration wire surface strain meter 1.
Stretching construction can be carried out after completing above step.Read the frequency values of type vibration wire surface strain meter in different phase in stretching process, obtain the rope force value of different pulling anchor cable stage according to initial frequency value according to respective formula.
The utility model not only can carry out the cable tension test in stretching construction and other work progresss, and can carry out the cable tension test in use procedure.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection domain of the present utility model.
Claims (1)
1. one kind based on force measuring device in the drag-line of type vibration wire surface strain meter, comprise 4 semicircle steel collar, two type vibration wire surface strain meters, the diameter of steel collar should match with the diameter of drag-line, it is characterized in that, 4 semicircle steel collar are supporting between two, be placed on cable body, the structure glue for steel collar being pasted on cable body is provided with inside each steel collar and between cable body outside surface, bolted is utilized between the supporting semicircle collar, and certain space should be left, so that the energy cooperative transformation when drag-line cross section under tension shrinks, two type vibration wire surface strain meters lay respectively at the both sides of cable body, and be fixedly attached to and be positioned in the steel collar of homonymy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475679.5U CN204085746U (en) | 2014-08-21 | 2014-08-21 | Based on force measuring device in the drag-line of type vibration wire surface strain meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475679.5U CN204085746U (en) | 2014-08-21 | 2014-08-21 | Based on force measuring device in the drag-line of type vibration wire surface strain meter |
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| Publication Number | Publication Date |
|---|---|
| CN204085746U true CN204085746U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420475679.5U Expired - Fee Related CN204085746U (en) | 2014-08-21 | 2014-08-21 | Based on force measuring device in the drag-line of type vibration wire surface strain meter |
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| CN (1) | CN204085746U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865696A (en) * | 2016-04-29 | 2016-08-17 | 长沙理工大学 | Inhaul cable force change testing device |
| CN106840482A (en) * | 2017-03-02 | 2017-06-13 | 招商局重庆交通科研设计院有限公司 | A kind of tension of prestressed tendon stress and stress under anchorage test device and its method of testing |
| CN107796560A (en) * | 2017-11-21 | 2018-03-13 | 嘉兴学院 | A kind of sensor for measuring diesel engine high-pressure fuel conduit pressure |
| CN110017787A (en) * | 2019-05-14 | 2019-07-16 | 中国科学院高能物理研究所 | Strain gauge means and strain measurement method |
| CN110455441A (en) * | 2019-07-24 | 2019-11-15 | 河海大学 | A kind of external tendon prestressing force testing auxiliary device |
| CN111521316A (en) * | 2020-05-19 | 2020-08-11 | 兰州理工大学 | Multi-gear vibrating wire type bolt state monitoring device and use and identification method thereof |
| CN111971535A (en) * | 2018-06-27 | 2020-11-20 | 大和制衡株式会社 | Combined metering device |
| CN112945425A (en) * | 2021-01-20 | 2021-06-11 | 南京工程学院 | Intelligent vibrating wire type sensor and use method thereof |
| WO2022166463A1 (en) * | 2021-02-07 | 2022-08-11 | 浙江大学 | Surface strain-based method and apparatus for measuring cable force |
-
2014
- 2014-08-21 CN CN201420475679.5U patent/CN204085746U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865696A (en) * | 2016-04-29 | 2016-08-17 | 长沙理工大学 | Inhaul cable force change testing device |
| CN106840482A (en) * | 2017-03-02 | 2017-06-13 | 招商局重庆交通科研设计院有限公司 | A kind of tension of prestressed tendon stress and stress under anchorage test device and its method of testing |
| CN106840482B (en) * | 2017-03-02 | 2019-04-16 | 招商局重庆交通科研设计院有限公司 | A kind of tension of prestressed tendon stress and stress under anchorage test device and its test method |
| CN107796560A (en) * | 2017-11-21 | 2018-03-13 | 嘉兴学院 | A kind of sensor for measuring diesel engine high-pressure fuel conduit pressure |
| CN111971535A (en) * | 2018-06-27 | 2020-11-20 | 大和制衡株式会社 | Combined metering device |
| CN111971535B (en) * | 2018-06-27 | 2022-03-25 | 大和制衡株式会社 | Combined metering device |
| CN110017787A (en) * | 2019-05-14 | 2019-07-16 | 中国科学院高能物理研究所 | Strain gauge means and strain measurement method |
| CN110455441A (en) * | 2019-07-24 | 2019-11-15 | 河海大学 | A kind of external tendon prestressing force testing auxiliary device |
| CN110455441B (en) * | 2019-07-24 | 2021-06-01 | 河海大学 | External cable prestressing force test auxiliary device |
| CN111521316A (en) * | 2020-05-19 | 2020-08-11 | 兰州理工大学 | Multi-gear vibrating wire type bolt state monitoring device and use and identification method thereof |
| CN112945425A (en) * | 2021-01-20 | 2021-06-11 | 南京工程学院 | Intelligent vibrating wire type sensor and use method thereof |
| WO2022166463A1 (en) * | 2021-02-07 | 2022-08-11 | 浙江大学 | Surface strain-based method and apparatus for measuring cable force |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20200821 |
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| CF01 | Termination of patent right due to non-payment of annual fee |