CN105334115A - Pull rope displacement type deflectometer - Google Patents
Pull rope displacement type deflectometer Download PDFInfo
- Publication number
- CN105334115A CN105334115A CN201510881893.XA CN201510881893A CN105334115A CN 105334115 A CN105334115 A CN 105334115A CN 201510881893 A CN201510881893 A CN 201510881893A CN 105334115 A CN105334115 A CN 105334115A
- Authority
- CN
- China
- Prior art keywords
- pull rope
- stay cord
- guide rail
- fleximeter
- displacement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a pull rope displacement type deflectometer, and relates to the structural design technology of experiment equipment in a material performance testing experiment. The pull rope displacement type deflectometer can be used for measuring the deflection of an experiment sample in a material performance experiment. Bolt holes are evenly formed in the circumferential direction of the position, close to a pull rope displacement sensor, of a pull rope outlet. The bolt holes are matched with installation holes and screws on a guide rail to fix the guide rail to the pull rope outlet of the pull rope displacement sensor. An ejector pin is of a hollow structure, one end of the ejector pin is closed and is internally provided with a pull rope fixing structure, and the other end of the ejector pin is provided with a limiting boss. The limiting boss and a screw cap are matched to place the ejector pin into the guide rail. The pull rope displacement type deflectometer overcomes the defect that an experiment machine with a deflectometer can only measure the deflection in the vertical direction, can measure the deflection in any direction, overcomes the detect that the whole experiment process cannot be tracked when an extensometer measures the deflection and can track and measure deflection changes to a point to be tested in the whole experiment process.
Description
Technical field
The present invention relates to the structure-design technique of testing equipment in material properties test test, for measuring the amount of deflection of testpieces in material property testing, in particular to a kind of stay cord displacement-type fleximeter.
Background technology
In material properties test field, in test compound material and the bending property of sandwich construction or the process of the test of cutting performance, the amount of deflection response of testpieces under compressive load effect is the important parameter reflecting tested material property, must measure continuously, accurately.At present, the common method of the test of testing laboratory's long beam deflection or laminate bending test measurement amount of deflection has following three kinds:
The first, the amount of deflection of testpieces measured by the displacement meter that what service-test machine carried be installed on its vertical guide pole, as shown in Figure 1.Adopt the precision of the amount of deflection of this kind of testing machine measurement testpieces high, but, be only applicable to the measurement of simple configuration testpieces in vertical direction amount of deflection, then helpless for the deflection metrology of labyrinth in non-vertical direction;
The second, use additional extensometer to measure amount of deflection, as shown in Figure 2.This metering system needs usually can the depression bar of free-extension by one, and the stroke measuring depression bar by extensometer carrys out the amount of deflection of CHARACTERISATION TESTS part.Although this measuring method precision is high, owing to pressing to the restriction of deformability by extensometer, extensometer must be extractd to avoid causing damage to extensometer after amount of deflection reaches a certain size.
3rd, optics fleximeter is generally used for engineering survey, because its volume is comparatively large, and is not suitable for the deflection metrology of testing laboratory's small test part.
The technical matters needing now solution badly is, how to design a kind of fleximeter, and this fleximeter can be applicable to the deflection test test in laboratory, can carry out multidirectional deflection test again, and avoid the restriction pressing to deformability of similar extensometer to testpieces.
Summary of the invention
The object of the invention is to solve above-mentioned deficiency of the prior art, a kind of stay cord displacement-type fleximeter simple and reasonable, easy to use is provided.
Object of the present invention is achieved through the following technical solutions: a kind of stay cord displacement-type fleximeter, for the measurement of amount of deflection in testing laboratory's material property testing, mainly comprises: displacement sensor for pull rope, be displacement sensor for pull rope, comprise stay cord, and stay cord exports; Guide rail, be tubular structure, one end is provided with installation base, and the other end is provided with internal thread; Nut, is provided with external thread, and cross section is " L " type, and with guide rail female one end fits is set; Thimble is hollow structure, one end close and in be provided with stay cord fixed sturcture, the other end is provided with positive stop lug boss, and positive stop lug boss coordinates with nut thimble is placed in guide rail; Spring, one end is connected with the positive stop lug boss of thimble, and the other end is fixed on the stay cord exit of displacement sensor for pull rope.
In such scheme preferably, the installation base of guide rail is evenly provided with mounting hole along thimble circumference, and mounting hole is provided with internal thread.The plane of the plane of the installation base of guide rail and the shell of displacement sensor for pull rope is fitted, and it is to be fixed on displacement sensor for pull rope by guide rail that installation base evenly arranges mounting hole.
In above-mentioned either a program preferably, the quantity of mounting hole is at least two.Even setting at least two mounting holes be ensure that installation base and displacement sensor for pull rope can fasteningly be installed, prevent from arranging 1 meeting and produce the situation generation that side tilts.
In above-mentioned either a program preferably, the positive stop lug boss of thimble is provided with bal guide along positive stop lug boss circumference, in bal guide, is provided with ball.It is to install ball that the positive stop lug boss of thimble arranges bal guide, and on positive stop lug boss, circumference arranges ball is avoid the chamber wall of positive stop lug boss and thimble to produce to rub, and affects the accuracy of experimental result.
In above-mentioned either a program preferably, the quantity of bal guide positive stop lug boss arranged along the axis of thimble is at least one.
In above-mentioned either a program preferably, guide rail is fixed on displacement sensor for pull rope by mounting hole and screw fit by guide rail.
In above-mentioned either a program preferably, be evenly provided with bolt hole near the stay cord exit circumference of displacement sensor for pull rope, guide rail is fixed on the stay cord exit of displacement sensor for pull rope by the mounting hole on bolt hole and guide rail, screw fit.
The beneficial effect of stay cord displacement-type fleximeter provided by the present invention is:
A) amount of deflection of any direction can be measured, overcome testing machine and carry the shortcoming that fleximeter can only measure vertical direction amount of deflection;
B) can the amount of deflection change of tested point in the whole process of the test of tracking measurement, overcome the shortcoming cannot following the tracks of whole process of the test when extensometer measures amount of deflection;
C) range of draw-wire displacement sensor is large, only need design thimble and the rail length of this fleximeter according to the measurement range of test expection,
Also to possess structure except some simple, easily manufactured except above-mentioned, the advantages such as device stability is high, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flexure test machine of fleximeter and testing machine integral type in prior art;
Fig. 2 is the flexure test machine structural representation that in prior art, subsidiary extensometer measures testpieces amount of deflection;
Fig. 3 is the structural representation of the preferred embodiment according to stay cord displacement-type fleximeter of the present invention;
Fig. 4 is the plan structure schematic diagram of preferred embodiment shown in the Fig. 3 according to stay cord displacement-type fleximeter of the present invention;
Fig. 5 is the sectional structure schematic diagram of the thimble structure of preferred embodiment shown in the Fig. 3 according to stay cord displacement-type fleximeter of the present invention.
Reference numeral:
1-1 is vertical lead wire bar, 1-2 is the first testpieces, 1-3 is testpieces fixture, 1-4 is that fleximeter, the 2-1 that testing machine carries is pressure head, 2-2 is extensometer, 2-3 is the second testpieces, 2-4 is depression bar, 2-5 be bearing, 3 are displacement sensor for pull ropes, 4 are guide rails, 5 are nuts, 6 are thimbles, 7 are balls, 8 are springs, 9 is screws.
Embodiment
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
As in Figure 3-5, stay cord displacement-type fleximeter provided by the invention, for the measurement of amount of deflection in testing laboratory's material property testing, comprising: displacement sensor for pull rope 3, comprises stay cord, and stay cord exports; Guide rail 4, be tubular structure, one end is provided with installation base, and the other end is provided with internal thread; Nut 5, is provided with external thread, and cross section is " L " type, with guide rail 2 female one end fits is set; Thimble 6 is hollow structure, one end close and in be provided with stay cord fixed sturcture, the other end is provided with positive stop lug boss, and positive stop lug boss coordinates with nut 5 thimble 6 is placed in guide rail 4; Spring 8, one end is connected with the positive stop lug boss of thimble 6, and the other end is fixed on the stay cord exit of displacement sensor for pull rope 3.
On the installation base of guide rail 4, be evenly provided with mounting hole along the circumference of thimble 6 in the stay cord displacement-type fleximeter that the invention described above provides, mounting hole is provided with internal thread, and wherein, the quantity of mounting hole is at least two.
The positive stop lug boss of thimble 6 is provided with bal guide along positive stop lug boss circumference, in bal guide, is provided with ball 7.The quantity of the bal guide that positive stop lug boss is arranged along the axis of thimble 6 is at least one.Guide rail 4 to be coordinated with screw 9 by mounting hole and is fixed on displacement sensor for pull rope 3 by guide rail 4.Stay cord exit circumference near displacement sensor for pull rope 3 is evenly provided with bolt hole, and bolt hole coordinates stay cord guide rail being fixed on displacement sensor for pull rope 3 to export with the mounting hole on guide rail 4, screw 9.
Stay cord displacement-type fleximeter provided by the invention can realize continuous coverage to the amount of deflection of to be tested and output digit signals, and its principle is the stay cord stroke change of the amount of deflection of tested point being converted to displacement sensor for pull rope 3.Fleximeter of the present invention is made up of following critical part: displacement sensor for pull rope 3, guide rail 4, guide rail nut 5, thimble 6, ball 7, spring 8, screw 9.Displacement sensor for pull rope 3 is core components of stay cord displacement-type fleximeter provided by the invention, and its effect the stroke of stay cord is converted to electric signal to export.Guide rail 4 is screwed together by screw 9 and displacement sensor for pull rope 3.Guide rail 4 is cavity structure, and its axis overlaps with the steel wire tow line of displacement sensor for pull rope 3.The effect of guide rail 4 is for thimble 6 provides guide effect in the movement of vertical direction.Guide rail nut 5 is with through hole, and the top of thimble 6 can through the through hole of guide rail nut 5, but the bottom of thimble 6 not by.The effect of nut 5 is enclosed in the cavity of guide rail 4 the latter half of thimble 6.The inside of thimble 6 is also cavity structure, and the steel wire tow line of displacement sensor for pull rope 3 is tied up on the top of thimble 6 internal cavities.Thimble 6 is divided into upper and lower two parts: the first half is taper, and its end is sphere, and during measurement amount of deflection, sphere withstands on the tested point place of to be tested; The latter half is column, and its diameter is greater than the maximum gauge of the first half and is less than the cavity diameter of guide rail 4.Thimble 6 the latter half is provided with uniform groove, and the effect of groove is for placing ball 7.The effect of ball 7 mainly reduces friction force when thimble 6 moves in guide rail 4.The effect of spring 8 makes thimble 6 be in tensioning state all the time, and this tensile force requiring spring 8 to provide must be greater than the tensile force of displacement sensor for pull rope 3 contained spring.
In concrete use stay cord displacement-type provided by the invention fleximeter process, stay cord displacement-type fleximeter of the present invention is used to measure the amount of deflection of tested point along a direction, installed along direction to be measured by stay cord displacement-type fleximeter of the present invention, the spherical end of stay cord displacement-type fleximeter thimble 6 props up tested point.When the position of tested point changes, thimble 6 moves in guide rail 4, drives the stay cord of displacement sensor for pull rope 3 to stretch or shrink.The location variation of tested point is consistent with the stretching, extension of stay cord or amount of contraction, so the stay cord stretching, extension of displacement sensor for pull rope 3 output or amount of contraction are the change in location of tested point.
Adopt stay cord displacement-type fleximeter provided by the invention to the deflection metrology in material properties test process in testing laboratory, the range of displacement sensor for pull rope is large, and the amount of deflection of testpieces any direction can be measured, the amount of deflection change of tested point in all right whole process of the test of tracking measurement.
More than be described in detail in conjunction with stay cord displacement-type fleximeter specific embodiment of the present invention, but be not limitation of the present invention, everyly according to technical spirit of the present invention, technical scope of the present invention is all belonged to any simple modification made for any of the above embodiments, also it should be noted that, comprise the combination in any between each part mentioned above according to the category of the technical scheme of stay cord displacement-type fleximeter of the present invention.
Claims (7)
1. a stay cord displacement-type fleximeter, for the measurement of amount of deflection in testing laboratory's material property testing, is characterized in that, comprising:
Displacement sensor for pull rope (3), comprises stay cord, and stay cord exports;
Guide rail (4), be tubular structure, one end is provided with installation base, and the other end is provided with internal thread;
Nut (5), is provided with external thread, with described guide rail (2) female one end fits is set;
Thimble (6), for hollow structure, one end close and in be provided with stay cord fixed sturcture, the other end is provided with positive stop lug boss, and described positive stop lug boss coordinates with described nut (5) described thimble (6) is placed in described guide rail (4);
Spring (8), one end is connected with the positive stop lug boss of described thimble (6), and the other end is fixed on the described stay cord exit of described displacement sensor for pull rope (3).
2. stay cord displacement-type fleximeter as claimed in claim 1, is characterized in that: on the installation base of described guide rail (4), be evenly provided with mounting hole along the circumference of described thimble (6), mounting hole is provided with internal thread.
3. stay cord displacement-type fleximeter as claimed in claim 2, is characterized in that: the quantity of described mounting hole is at least two.
4. stay cord displacement-type fleximeter as claimed in claim 1, is characterized in that: on the positive stop lug boss of described thimble (6), described positive stop lug boss circumference is provided with bal guide, is provided with ball (7) in bal guide.
5. stay cord displacement-type fleximeter as claimed in claim 4, is characterized in that: the quantity of the described bal guide arranged along the axis of described thimble (6) on described positive stop lug boss is at least one.
6. stay cord displacement-type fleximeter as claimed in claim 2, is characterized in that: described guide rail (4) to be coordinated with screw (9) by described mounting hole and is fixed on described displacement sensor for pull rope (3) by described guide rail.
7. the stay cord displacement-type fleximeter as described in claim 1 or 6, it is characterized in that: the described stay cord exit circumference near described displacement sensor for pull rope (3) is evenly provided with bolt hole, and described bolt hole coordinates the described stay cord exit described guide rail (4) being fixed on described displacement sensor for pull rope (3) with the mounting hole on described guide rail (4), described screw (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881893.XA CN105334115A (en) | 2015-12-04 | 2015-12-04 | Pull rope displacement type deflectometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881893.XA CN105334115A (en) | 2015-12-04 | 2015-12-04 | Pull rope displacement type deflectometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105334115A true CN105334115A (en) | 2016-02-17 |
Family
ID=55284767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510881893.XA Pending CN105334115A (en) | 2015-12-04 | 2015-12-04 | Pull rope displacement type deflectometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105334115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421481A (en) * | 2017-07-04 | 2017-12-01 | 成都理工大学 | A kind of three-dimension monitor early warning multipoint displacement meter for being used to measure rock mass dilatancy |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083291U (en) * | 1990-12-28 | 1991-08-21 | 艾世杰 | Deflection measuring instrument for concrete member |
| US5959215A (en) * | 1995-04-12 | 1999-09-28 | Bridgestone Corporation | Heat build-up/fatigue measuring method for viscoelastic body and hydraulic servo flexometer |
| CN1335254A (en) * | 2000-07-21 | 2002-02-13 | 叶志忠 | Hand turned crane |
| CN201048712Y (en) * | 2007-06-29 | 2008-04-23 | 东莞市石龙万通实业有限公司 | Two-folding self-locking sliding rail |
| CN201408112Y (en) * | 2009-05-25 | 2010-02-17 | 上海同韵环保能源科技有限公司 | Loading test device for fan blade of wind generating set |
| CN101936859A (en) * | 2010-07-23 | 2011-01-05 | 中国科学院武汉岩土力学研究所 | Calibration device for rock radial deformation sensor |
| CN103267473A (en) * | 2013-04-17 | 2013-08-28 | 哈尔滨工程大学 | Deflection measuring device of vertical shaft wind turbine blade |
| CN203539839U (en) * | 2013-11-08 | 2014-04-16 | 赵雪梅 | Novel urethral catheter |
| CN203681576U (en) * | 2014-01-15 | 2014-07-02 | 中特物流有限公司 | Dynamics detection system for high-capacity rail commodity car |
-
2015
- 2015-12-04 CN CN201510881893.XA patent/CN105334115A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083291U (en) * | 1990-12-28 | 1991-08-21 | 艾世杰 | Deflection measuring instrument for concrete member |
| US5959215A (en) * | 1995-04-12 | 1999-09-28 | Bridgestone Corporation | Heat build-up/fatigue measuring method for viscoelastic body and hydraulic servo flexometer |
| CN1335254A (en) * | 2000-07-21 | 2002-02-13 | 叶志忠 | Hand turned crane |
| CN201048712Y (en) * | 2007-06-29 | 2008-04-23 | 东莞市石龙万通实业有限公司 | Two-folding self-locking sliding rail |
| CN201408112Y (en) * | 2009-05-25 | 2010-02-17 | 上海同韵环保能源科技有限公司 | Loading test device for fan blade of wind generating set |
| CN101936859A (en) * | 2010-07-23 | 2011-01-05 | 中国科学院武汉岩土力学研究所 | Calibration device for rock radial deformation sensor |
| CN103267473A (en) * | 2013-04-17 | 2013-08-28 | 哈尔滨工程大学 | Deflection measuring device of vertical shaft wind turbine blade |
| CN203539839U (en) * | 2013-11-08 | 2014-04-16 | 赵雪梅 | Novel urethral catheter |
| CN203681576U (en) * | 2014-01-15 | 2014-07-02 | 中特物流有限公司 | Dynamics detection system for high-capacity rail commodity car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421481A (en) * | 2017-07-04 | 2017-12-01 | 成都理工大学 | A kind of three-dimension monitor early warning multipoint displacement meter for being used to measure rock mass dilatancy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105928447B (en) | A kind of rapid survey deflection of bridge span device | |
| US20180195930A1 (en) | Vertical displacement detecting device | |
| CN204101226U (en) | A kind of contact net lines rope tensility monitoring device for falling mound compensation way | |
| CN106932172B (en) | Ship seakeeping experimental rig | |
| CN206787816U (en) | Guard against error railing horizontal thrust load testing machine | |
| CN105910580A (en) | Distributed fiber Bragg grating inclinometer device and inclination metering method | |
| CN105571503A (en) | Wind-power blade vertical static loading two-way displacement deformation precise measuring method and device | |
| CN204115643U (en) | A kind of inspection internal thread and end face squareness fixture | |
| CN102967246A (en) | Inner cone obliquity steel ball measuring gauge and measuring method thereof | |
| CN105334115A (en) | Pull rope displacement type deflectometer | |
| CN106770481B (en) | Bridge sling monitoring sensor | |
| CN109342194A (en) | A kind of rock sample transversely deforming measuring device | |
| CN102865826A (en) | Diameter detecting device and detecting method for grinding rod | |
| CN106644229A (en) | In-service cable force detecting device and method | |
| CN209147942U (en) | It is a kind of by Fibre Optical Sensor it is unstressed based on | |
| CN106382894A (en) | Fiber grating multidirectional sensor | |
| RU167850U9 (en) | Device for measuring dent parameters | |
| CN104567655A (en) | Dynamic angular displacement measuring device and method | |
| CN205482705U (en) | Displacement generator | |
| CN205537580U (en) | Pitch diameter measuring apparatu in gas thread | |
| CN108534652A (en) | A kind of anchorage structures displacement monitor and method based on inductance value variation | |
| CN203881237U (en) | Pitch diameter measuring device for large-size thread ring gage | |
| CN208476108U (en) | A kind of zero clearance mechanical detection hole location device | |
| CN206496859U (en) | A kind of in-service cable force detection means | |
| CN110455453B (en) | Mobile vibration testing device and cable force testing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160217 |
|
| RJ01 | Rejection of invention patent application after publication |