CN105547114A - Tape measure for non-circularity detection and using method thereof - Google Patents
Tape measure for non-circularity detection and using method thereof Download PDFInfo
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- CN105547114A CN105547114A CN201510923449.XA CN201510923449A CN105547114A CN 105547114 A CN105547114 A CN 105547114A CN 201510923449 A CN201510923449 A CN 201510923449A CN 105547114 A CN105547114 A CN 105547114A
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- tape measure
- scale
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Abstract
The invention discloses a tape measure for non-circularity detection and a using method thereof. The tape measure for non-circularity detection comprises a tape measure shell, a scale telescopic in the tape measure shell and a magnet, wherein the end part of the scale is provided with a hook; multiple clamping grooves are arranged in the scale; the multiple clamping grooves are arranged in parallel; and the magnet is movably arranged for fixing the tape measure on the surface of a measured object. The tape measure for non-circularity detection and the using method thereof have the beneficial effects that through arranging the clamping grooves in the scale, when an operator regards a certain place to be an elliptical long-axis endpoint of a pipeline, the hook is clamped in the clamping groove, and first-time fixing is realized through the hook; through fixing of the magnet, second-time fixing is carried out, manual fixing is saved, and while manpower is saved, the measurement is more accurate; and through arrangement of a fluorescent layer, the ellipticity of the pipeline can be accurately known even in a dark environment.
Description
Technical field
The out-of-roundness that the present invention relates to pipeline detects, and is specifically related to out-of-roundness detection tape measure and using method thereof.
Background technology
To station boiler, the detection of out-of-roundness is an important indicator of inspection tube bends or elbow quality, in practice, the normal measuring method adopted is caliper measurements at present: when measuring maximum gauge, a pincers pin leans against bend pipe or elbow side, another pincers pin slides along pipe surface circumferencial direction, stop sliding when two pincers pin spacings reach maximum, keep clamp openings of sizes constant, it is taken off from pipeline, measure the distance between two pincers pin with dip stick, be the diameter on a measured direction.In like manner can record minimum diameter, difference should stop sliding when two pincers pin spacings reach minimum;
But there is the defect of following several respects in this course:
1) in real work, when dark place is detected, usually need to carry out illumination by external light source and just can detect, if do not have external light source or external light source more weak when, directly can have influence on the accuracy of measurement;
2) because of tape measure is pipeline, if when pipe diameter is larger, a staff should fix tape measure, also needs to operate calliper simultaneously, very inconvenient.
3) because the position of tape measure and calliper is not in same circularity, measuring accuracy out of true is caused.
Therefore, a kind of novel out-of-roundness detection tape measure is needed.
Summary of the invention
The object of the invention is in order to provide a kind of when measuring channel convenient fixing, be convenient to the out-of-roundness detection tape measure that uses at dim environment and using method thereof.
In order to reach above-mentioned purpose, the present invention adopts following technical scheme:
Out-of-roundness detection tape measure, comprise tape measure housing and the scale in tape measure housing that stretches, the end of scale is provided with grab, scale is provided with multiple draw-in groove, multiple draw-in groove be arranged in parallel, being all movably equipped with one for tape measure being fixed on the magnet on testee surface, being coordinated by grab with draw-in groove at each draw-in groove place, by the movable magnet arranged, tape measure is fixed on outside pipeline again, realizes fixing tape measure.
Further, with fluorescence coating on the scale mark on described scale, described handle is with fluorescence coating, the fluorescence coating color that described grab surface has is different from the fluorescence coating color that described handle has, the difference of color, is convenient to identify grab and magnet, convenient fixing tape measure.
Further, the width of described grab end is less than or equal to the width of described draw-in groove.
Further, described scale is rigidity or soft.
Further, described magnet is located in lower house, above lower house, be provided with upper shell, and handle connects upper shell and lower house, the distance that upper shell and lower house interval set; By the setting of upper shell, lower house and handle, first grab is stuck in draw-in groove, then is fixed by magnet.
Further, described magnet is located in a housing, and housing is provided with handle or hole.
Further, described magnet is actively installed on a draw-in groove place, and the length of draw-in groove is 6 ~ 12cm, and by magnet is fixed on draw-in groove place, coordinate grab to realize fixing the double of tape measure, save labour, measuring speed is fast.
Further, described magnet is actively installed on described grab place.
Further, the width of described lower house is less than the width of described draw-in groove, and described grab surface is with fluorescence coating, and described handle surfaces is with fluorescence coating.
The using method of described tape measure, concrete steps are as follows:
1) inner arc center and the Bei Hu center of bend pipe or elbow is searched out by band off-balancesheet calliper;
2) by two gauge heads of band off-balancesheet calliper surface sliding along bend pipe or elbow near bend pipe neutral surface;
3) observe the change of dial plate registration, search out the position of ellipse short shaft end points, and record ellipse short shaft distance at bend pipe or the enterprising row labels of elbow;
4) tape measure is wound around bend pipe or elbow one encloses and covers two minor axis end points, utilizes magnet nonadjustable signal;
5) draw-in groove of gauge head in the middle of scale representing snap gauge is slided, observe registration change in dial plate simultaneously;
6) when in dial plate, registration is maximum, two gauge head positions of calliper are transverse end points, write down this registration D
max;
7) by the out-of-roundness σ of formulae discovery bend pipe or elbow:
σ＝[(D
max-D
min)/D]×100％(1)
Wherein, D
maxby being surveyed transverse distance, D
minfor ellipse short shaft distance, D is the diameter of bend pipe or elbow.
Principle of work of the present invention is: when using tape measure, when the pipeline that operator measures certain is the thickest, by observing the fluorescence coating of fluorescence coating on scale mark and grab, the grab of scale end is stuck in draw-in groove, upper shell and lower house that magnet is housed are placed in draw-in groove, block grab, the lower house that magnet is housed is placed in draw-in groove, the bed knife of magnet is greater than screen resilience, rotary handle, make to block tape measure between upper shell and lower house, tape measure and pipeline are fixed together simultaneously, realize second to fix, after fixing, clamp are adopted to carry out other surveying work.
The invention has the beneficial effects as follows:
1) draw-in groove by arranging on scale, when operator thinks that certain is the thickness of pipeline, grab is stuck in draw-in groove, by grab, realizes first and fixes; Fixed magnet, carries out second and fixes, and eliminates artificial fixing, while saving manpower, makes measurement more accurate.
2) by the setting of fluorescence coating, even if realize under dim environment, the accurate assurance to pipeline rugosity can also be realized.
3) whole measuring method is simple, and calliper moves in the draw-in groove of tape measure, is convenient for measuring, and measuring accuracy is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the middle scale of tape measure when opening;
Fig. 2 is the schematic diagram of scale;
Fig. 3 is the body diagram placing magnet;
Fig. 4 is the setting position schematic diagram of magnet in embodiment 2;
Wherein, 1. tape measure housing, 2. scale, 3. grab, 4. draw-in groove, 5. upper shell, 6. handle, 7. magnet, 8. lower house, 9. turning axle.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.
Embodiment 1
As illustrated in fig. 1 and 2, out-of-roundness detection tape measure, comprise tape measure housing 1 and the scale 2 in tape measure housing 1 that stretches, described scale 2 is rigidity or soft.The end of scale 2 is provided with grab 3, scale 2 is provided with multiple draw-in groove 4, multiple draw-in groove 4 be arranged in parallel, a magnet is all movably equipped with at each draw-in groove 4 place, coordinated with draw-in groove 4 by grab 3, be fixed on outside pipeline by the movable magnet arranged by tape measure again, what realize tape measure is fixing, and the length of draw-in groove 4 is arranged along the length of scale.For ensureing the accuracy measured, in situation with good conditionsi, arrange multiple tape measure, on each tape measure, the setting position of draw-in groove 4 is different.
The width of described grab 3 is less than or equal to the width of described draw-in groove 4.
With fluorescence coating on scale mark on described scale 2.Described grab 3 is surperficial with fluorescence coating, and described handle 6 is with fluorescence coating, and the fluorescence coating color that the fluorescence coating colouring discrimination that described grab 3 surface has has in handle 6, the difference of color, is convenient to identify grab 3 and magnet, convenient fixing tape measure.
When using tape measure, when the pipeline that operator measures certain is the thickest, by observing the fluorescence coating of fluorescence coating on scale mark and grab 3, the grab 3 of scale 2 end is stuck in draw-in groove 4, magnet is placed in draw-in groove 4, blocks grab 3, open magnet, tape measure and pipeline are fixed together, realize second to fix, after fixing, adopt clamp to carry out other surveying work, when transverse end points is at two draw-in groove connecting places, directly can make marks with marker pen.
Described magnet is located in lower house 8, lower house 8 is provided with handle 6, upper shell 5 is provided with above lower house 8, handle 6 connects upper shell 5 and lower house 8, the distance that upper shell 5 and lower house 8 interval set, by the setting of upper shell 5, lower house 8 and handle 6, first grab 3 is stuck in draw-in groove 4, then is fixed by magnet.
The width of described lower house 8 is less than the width of described draw-in groove 4, length is longer than the width of draw-in groove 4, lower house 8 is located in described draw-in groove 4, when fixing, lower house and upper shell are rotated, block scale 2, when the width of upper shell 5 and lower house 8 is all less than the width of draw-in groove 4, conveniently the two is taken out or is inserted in draw-in groove 4.
The using method of described tape measure, concrete steps are as follows:
1) inner arc center and the Bei Hu center of bend pipe or elbow is searched out by band off-balancesheet calliper;
2) by two gauge heads of band off-balancesheet calliper surface sliding along bend pipe or elbow near bend pipe neutral surface;
3) observe the change of dial plate registration, search out the position of ellipse short shaft end points, and record ellipse short shaft distance at bend pipe or the enterprising row labels of elbow;
4) tape measure is wound around bend pipe or elbow one encloses and covers two minor axis end points, utilizes magnet 7 nonadjustable signal 2;
5) draw-in groove of gauge head in the middle of scale representing snap gauge is slided, observe registration change in dial plate simultaneously;
6) when in dial plate, registration is maximum, two gauge head positions of calliper are transverse end points, write down this registration D
max;
7) by the out-of-roundness σ of formulae discovery bend pipe or elbow:
σ＝[(D
max-D
min)/D]×100％(1)
Wherein, D
maxby being surveyed transverse distance, D
minfor ellipse short shaft distance, D is the diameter of bend pipe or elbow.
Embodiment 2
The difference of the present embodiment and embodiment 1 is:
A housing is provided with by turning axle 9 at grab 3 place, the side of housing central section is fixed on turning axle 9, and the inside of housing is provided with magnet 7, and magnet 7 presses close to the bottom of enclosure interior, when grab 3 is fixed in draw-in groove 4 by needs, magnet 7 is adsorbed on pipeline back elbow surface by rotary shell, and fixing tape measure, in the process finding transverse end points, there is magnet orientation housing side away from body or bend pipe, when the fixing tape measure of needs, housing rotates, and is adsorbed onto pipe surface by there being the side of magnet.
Embodiment 3
The difference of the present embodiment and embodiment 1 is:
Magnet is located in a housing, and housing is provided with handle or hole, for facilitating the fixing of magnet and taking off.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. out-of-roundness detection tape measure, it is characterized in that, comprise tape measure housing and the scale in tape measure housing that stretches, the end of scale is provided with grab, scale is provided with multiple draw-in groove, multiple draw-in groove be arranged in parallel, also comprises the movable magnet for tape measure being fixed on testee surface arranged.
2. tape measure as claimed in claim 1, is characterized in that, with fluorescence coating on the scale mark on described scale.
3. tape measure as claimed in claim 1, it is characterized in that, the width of described grab end is less than or equal to the width of described draw-in groove.
4. tape measure as claimed in claim 1, it is characterized in that, described scale is rigidity or soft.
5. the tape measure according to any one of claim 1-4, is characterized in that, described magnet is located in lower house, above lower house, be provided with upper shell, and handle connects upper shell and lower house, the distance that upper shell and lower house interval set.
6. the tape measure according to any one of claim 1-4, is characterized in that, described magnet is located in a housing, and housing is provided with handle or hole.
7. the tape measure according to any one of claim 1-4, is characterized in that, described magnet is actively installed on a draw-in groove place, and the length of draw-in groove is 6 ~ 12cm.
8. the tape measure according to any one of claim 1-4, is characterized in that, described magnet is actively installed on described grab place.
9. tape measure as claimed in claim 6, it is characterized in that, the width of described lower house is less than the width of described draw-in groove, and described grab surface is with fluorescence coating, and described handle surfaces is with fluorescence coating.
10. the using method of tape measure as claimed in any one of claims 1-9 wherein, it is characterized in that, concrete steps are as follows:
1) inner arc center and the Bei Hu center of bend pipe or elbow is searched out by band off-balancesheet calliper;
2) by two gauge heads of band off-balancesheet calliper surface sliding along bend pipe or elbow near bend pipe neutral surface;
3) observe the change of dial plate registration, search out the position of ellipse short shaft end points, and record ellipse short shaft distance at bend pipe or the enterprising row labels of elbow;
4) tape measure is wound around bend pipe or elbow one encloses and covers two minor axis end points, utilizes magnet nonadjustable signal;
5) draw-in groove of gauge head in the middle of scale representing snap gauge is slided, observe registration change in dial plate simultaneously;
6) when in dial plate, registration is maximum, two gauge head positions of calliper are transverse end points, write down this registration D
max;
7) by the out-of-roundness σ of formulae discovery bend pipe or elbow:
σ＝[(D
max-D
min)/D]×100％(1)
Wherein, D
maxby being surveyed transverse distance, D
minfor ellipse short shaft distance, D is the diameter of bend pipe or elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923449.XA CN105547114B (en) | 2015-12-11 | 2015-12-11 | Out-of-roundness detection tape measure and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923449.XA CN105547114B (en) | 2015-12-11 | 2015-12-11 | Out-of-roundness detection tape measure and its application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105547114A true CN105547114A (en) | 2016-05-04 |
| CN105547114B CN105547114B (en) | 2017-10-24 |
Family
ID=55826480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510923449.XA Active CN105547114B (en) | 2015-12-11 | 2015-12-11 | Out-of-roundness detection tape measure and its application method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918166A (en) * | 1973-12-10 | 1975-11-11 | Peter Mason | Head circumference measuring device |
| CN201885643U (en) * | 2010-04-30 | 2011-06-29 | 李明义 | Improved structure of ruler surface of circular-diameter ring ruler |
| CN103267468A (en) * | 2013-05-15 | 2013-08-28 | 张伟 | Roundness detection device |
| CN103398650A (en) * | 2013-08-12 | 2013-11-20 | 北京隆盛泰科石油管科技有限公司 | Ellipticity measuring instrument for tube body and measurement method thereof |
| CN103837067A (en) * | 2014-03-21 | 2014-06-04 | 国家电网公司 | Direct-reading type calipers for measuring ovality of pipeline |
| CN205383952U (en) * | 2015-12-11 | 2016-07-13 | 山东电力工业锅炉压力容器检验中心有限公司 | Tape measure for roundness detection not |
-
2015
- 2015-12-11 CN CN201510923449.XA patent/CN105547114B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918166A (en) * | 1973-12-10 | 1975-11-11 | Peter Mason | Head circumference measuring device |
| CN201885643U (en) * | 2010-04-30 | 2011-06-29 | 李明义 | Improved structure of ruler surface of circular-diameter ring ruler |
| CN103267468A (en) * | 2013-05-15 | 2013-08-28 | 张伟 | Roundness detection device |
| CN103398650A (en) * | 2013-08-12 | 2013-11-20 | 北京隆盛泰科石油管科技有限公司 | Ellipticity measuring instrument for tube body and measurement method thereof |
| CN103837067A (en) * | 2014-03-21 | 2014-06-04 | 国家电网公司 | Direct-reading type calipers for measuring ovality of pipeline |
| CN205383952U (en) * | 2015-12-11 | 2016-07-13 | 山东电力工业锅炉压力容器检验中心有限公司 | Tape measure for roundness detection not |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105547114B (en) | 2017-10-24 |
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