CN201852539U - Welding inspection ruler with changeable span - Google Patents
Welding inspection ruler with changeable span Download PDFInfo
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- CN201852539U CN201852539U CN2010205916844U CN201020591684U CN201852539U CN 201852539 U CN201852539 U CN 201852539U CN 2010205916844 U CN2010205916844 U CN 2010205916844U CN 201020591684 U CN201020591684 U CN 201020591684U CN 201852539 U CN201852539 U CN 201852539U
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- welding inspection
- gauge
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Abstract
A welding inspection ruler with a changeable span comprises a main ruler part, a height ruler part, an undercut depth ruler part and a longitudinal scale, wherein the height ruler part comprises a height ruler main body and a height ruler locking device; the undercut depth ruler part comprises an undercut depth ruler main body and an undercut depth ruler locking device; the main ruler part further comprises a lateral scale; the lateral scale is vertical to the longitudinal scale; the height ruler part further comprises a height ruler sliding block and a height ruler sliding block lateral fixing device; the height ruler main body is arranged on the height ruler sliding block; the undercut depth ruler part further comprises an undercut depth ruler sliding block and an undercut depth ruler sliding block lateral fixing device; and the undercut depth ruler main body is arranged on the undercut depth ruler sliding block. The welding inspection ruler is multifunctional, can be used for conveniently measuring the surplus height of seam with different widths, can be used for increasing the precision of measuring the surplus height and staggered side of the cylindrical pressure container and welding tube, and is flexible to use and easy to operate.
Description
Technical field
The utility model relates to measures the testing tool field, relates in particular to a kind of change span welding inspection ruler.
Background technology
Welding inspection ruler is to utilize principles such as strain line and vernier measurement, detect the weld width of weld seam, highly, the measurement instrument of unfitness of butt joint, the undercut degree of depth etc.
Conventional welding inspection ruler is when measuring weld reinforcement, welding inspection ruler span (the span: the distance between weld bead height chi or undercut pit gauge and the main scale) less because weld width is big, the weld bead height chi can not reach the weld reinforcement peak, therefore, use the less welding inspection ruler of span can't measure the bigger weld reinforcement of weld width, must the bigger welding inspection ruler of the number of remodeling.
Simultaneously, conventional welding inspection ruler is the design of butt plates welding seam, when measuring the welded tube weld reinforcement with it, even weld reinforcement is zero, dip stick also has a little reading, thereby causes measuring error, especially to small-diameter welded pipes or big span welding inspection ruler, error is bigger.
Once more, when using conventional welding inspection ruler that the welded tube unfitness of butt joint is measured, its error is wayward, because the measurement of misalignment at first is the basis that is measured as with weld reinforcement, and be at the weld seam two-sided measurement, the accumulation of error of generation is difficult for calculating, and precision is difficult to control.
For this reason, be badly in need of a kind of novel welding inspection ruler of invention.
The utility model content
In order to realize the foregoing invention purpose, the technical solution adopted in the utility model is as follows:
A kind of change span welding inspection ruler, comprise main scale part, height gauge part, undercut pit gauge part and vertical scale, described height gauge partly comprises height gauge body and height gauge locking device, described undercut pit gauge partly comprises undercut pit gauge body and undercut pit gauge locking device, described main scale part also comprises horizontal scale, and described horizontal scale is perpendicular to described vertical scale; Described height gauge part also comprises height gauge slide block and height gauge slide block crosswise fixed device, and described height gauge body is arranged on the described height gauge slide block; Described undercut pit gauge part also comprises undercut pit gauge slide block and undercut pit gauge slide block crosswise fixed device, and described undercut pit gauge body is arranged on the described undercut pit gauge slide block.
Described height gauge locking device is arranged on the described height gauge slide block.
Described undercut pit gauge locking device is arranged on the described undercut pit gauge slide block.
Described height gauge slide block can slide on the direction parallel with described horizontal scale.
Described undercut pit gauge slide block can slide on the direction parallel with described horizontal scale.
Described height gauge partly is the vernier form.
Described main scale partly is provided with described vertical scale.
Described main scale part comprises that also slide rail, described slide rail are parallel to described horizontal scale, and described height gauge slide block and described undercut pit gauge slide block can slide on described slide rail.
The so-called vertical scale of the utility model is meant the scale that parallels with direction of measurement on the direction; The so-called horizontal scale of the utility model, be meant with the perpendicular direction of direction of measurement on scale.In like manner, the utility model is so-called vertically, is meant the direction that parallels with direction of measurement; The utility model is so-called laterally, is meant the direction perpendicular with direction of measurement.
The difference of the utility model and conventional welding inspection ruler is, weld bead height chi and undercut pit gauge are designed to and can laterally move, become the span effect to reach, the chief components different with conventional welding inspection ruler have: slide rail, horizontal scale, height gauge slide block, height gauge slide block crosswise fixed device, undercut pit gauge slide block and undercut pit gauge slide block crosswise fixed device.The each several part major function is as described below:
Height gauge slide block, undercut pit gauge slide block: make weld bead height chi or undercut pit gauge do laterally and vertically move;
Height gauge slide block crosswise fixed device, undercut pit gauge slide block crosswise fixed device: can on the direction parallel, lock slide block, it is fixed with horizontal scale;
Slide rail: slide block is moved on the direction parallel with horizontal scale;
Horizontal scale: make slide block move to desired location, determine span.
The beneficial effects of the utility model are as follows:
(1) the utility model can replace multiple model welding inspection ruler by changing span, reaches a chi and uses effect more, can measure the weld reinforcement of different in width easily.
(2) the utility model can improve the measuring accuracy of welded tube weld reinforcement by dwindling the welding inspection ruler span.
(3) the conventional welding inspection ruler of the utility model ratio of precision is measured the precision height of welded tube weld reinforcement and misalignment, and is easy to operate.
(4) the utility model makes when calculating reinforcement more convenient, simple.
(5) the utility model uses flexible, easy operating.
Description of drawings
Fig. 1 is the structural representation of the utility model preferred embodiment;
Fig. 2 be in the prior art welding inspection ruler to the instrumentation plan of butt plates welding weld reinforcement;
Fig. 3 is the instrumentation plan when weld seam is zero in the prior art;
Fig. 4 is two kinds of measuring method synoptic diagram of welded still pipe weld reinforcement in the prior art;
Fig. 5 is a welded tube weld reinforcement instrumentation plan in the prior art;
Fig. 6 is to the instrumentation plan of welded tube unfitness of butt joint in the prior art;
Fig. 7 is that change span welding inspection ruler of the present utility model is measured the misalignment synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing, describe the utility model optimized technical scheme in detail.
A kind of change span welding inspection ruler as shown in Figure 1, comprise main scale part 1, height gauge part 2, undercut pit gauge part 3 and vertical scale 4, described height gauge part 2 comprises height gauge body 5 and height gauge locking device 12, described undercut pit gauge part 3 comprises undercut pit gauge body 7 and undercut pit gauge locking device 14, described main scale part also comprises horizontal scale 10, and described horizontal scale 10 is perpendicular to described vertical scale 4; Described height gauge part 2 also comprises height gauge slide block 11 and height gauge slide block crosswise fixed device 6, and described height gauge body 5 is arranged on the described height gauge slide block 11; Described undercut pit gauge part 3 also comprises undercut pit gauge slide block 13 and undercut pit gauge slide block crosswise fixed device 8, and described undercut pit gauge body 7 is arranged on the described undercut pit gauge slide block 13.Described height gauge locking device 12 is arranged on the described height gauge slide block 11.Described undercut pit gauge locking device 14 is arranged on the described undercut pit gauge slide block 13.Described height gauge slide block 11 can slide on the direction parallel with described horizontal scale 10.Described undercut pit gauge slide block 13 can slide on the direction parallel with described horizontal scale 10.Height gauge part 2 is the vernier form.Described main scale part 1 is provided with described vertical scale 4.Described main scale part 1 also comprises slide rail 9, and described slide rail 9 is parallel to described horizontal scale 10, and described height gauge slide block 11 and described undercut pit gauge slide block 13 can slide on described slide rail.
Contrast below by with prior art describes advantage of the present utility model in detail.
Existing welding inspection ruler primary structure form is divided into I type, II type, III type etc.Welding inspection ruler can be divided into 40 types, 60 types etc. again according to the difference of measuring width.
The butt welded seam reinforcement is defined as among the GB/T3375-1994 " welding term ": the maximum height that exceeds that part of weld metal above the line of mother metal surface.This standard gives the synoptic diagram of dull and stereotyped open joint weld reinforcement under the ideal state:
" mother metal surface line " in " welding term " can not be interpreted as straight line merely, should be camber line (vertically straight weld steel pipe) or the space curve (spiral seam welded tube) along the steel pipe circumference for cylindrical shape welded still pipe or pressure vessel base material surface line.
Conventional welding inspection ruler (II type) is being measured as shown in Figure 2 butt plates welding seam reinforcement:
Welding inspection ruler is when measuring weld reinforcement as seen from Figure 2, welding inspection ruler span (the span: the distance between weld bead height chi or undercut pit gauge and the main scale because weld width is big, as the L among Fig. 3) less, the weld bead height chi can not reach the weld reinforcement peak, therefore, use the less welding inspection ruler of span can't measure the bigger weld reinforcement of weld width, must the bigger welding inspection ruler of the number of remodeling.
Conventional welding inspection ruler is the design of butt plates welding seam, when measuring the welded tube weld reinforcement with it, even weld reinforcement is zero, dip stick also has a little reading (as shown in Figure 3), thereby cause measuring error, especially to small-diameter welded pipes or big span welding inspection ruler, error is bigger.
The universal method that conventional welding inspection ruler is measured welded still pipe outside weld reinforcement has two kinds, its synoptic diagram as shown in Figure 4:
By Fig. 3 and Fig. 4 as can be seen, when usefulness method a measured the longitudinal welded pipe reinforcement, measured value did not conform to the weld reinforcement actual value, be that measured value is greater than the weld seam true altitude, the true reinforcement of weld seam should be: h=h '-Δ wherein Δ is an error amount, and Δ=b, h ' are measured value.Can get by Fig. 3:
Wherein R is the steel pipe radius, and L is the welding inspection ruler span.
Also there is error in same using method b when measuring the welded tube weld reinforcement, for the measuring error of analysis measurement method b, Fig. 4 b is reduced to Fig. 5.
The true reinforcement h=CB+BE of weld seam as shown in Figure 5, CD=CBcosa wherein, because a is very little, cosa ≈ 1, i.e. CD ≈ CB, weld reinforcement h=CD+BE then, wherein CD is measured value h ', BE is an error delta.Then weld reinforcement is h=h '+Δ.Can get by Fig. 5:
Wherein R is the steel pipe radius, and AB=AQ+L/2, L are the welding inspection ruler span.
Use two kinds of measuring methods of a, b to measure caliber as 40mm welding inspection ruler (establish AQ and be 5mm) and be respectively 0.40mm and 0.62mm as 1000mm welded tube reinforcement time error with span L.According to " transfering natural gas from the west to the east two wires pipework straight-line joint submerged arc welding tube technical conditions " externally KB limit 2.5mm (being not more than the 18.4mm welded tube for the wall thickness) calculating of weld reinforcement, its relative error is respectively 16% and 24.8%.Concerning the bigger welding inspection ruler of span L, its relative error is bigger.
In sum, can draw following some conclusion:
When (1) using method a measured weld reinforcement, measured value was greater than the true reinforcement of weld seam, and when using method b measured weld reinforcement, measured value was less than the true reinforcement of weld seam;
(2) as can be known, at caliber one regularly, the welding inspection ruler span is the principal element that influences its measuring accuracy, and stride values is more little, and error amount is more little, and precision is high more by formula (1) and formula (2);
(3) be higher than measuring method b in welding inspection ruler span and caliber one timing welded tube weld reinforcement measuring method a precision.
At first so that certain a bit is basic point on the weld seam, respectively in weld seam two-sided measurement weld bead height, both differences are unfitness of butt joint then when using conventional welding inspection ruler to measure the welded tube misalignment, its instrumentation plan as shown in Figure 6, t is a unfitness of butt joint.
When using conventional welding inspection ruler that the welded tube unfitness of butt joint is measured, its error is wayward, because the measurement of misalignment at first is the basis that is measured as with weld reinforcement, and is at the weld seam two-sided measurement, and the accumulation of error of generation is difficult for calculating, and precision is difficult to control.
In sum, some deficiency below conventional welding inspection ruler exists when measuring the weld seam physical dimension:
When 1) using the less welding inspection ruler of span to measure the weld reinforcement of wider width, not easy to operate, need be replaced by the bigger welding inspection ruler of span.
When 2) using conventional welding inspection ruler to measure the welded tube weld reinforcement, use the bigger welding inspection ruler of span, its measuring error is bigger, therefore needs to change the less welding inspection ruler of span, then its measuring error is more little for span more little (can not less than weld width), and measuring accuracy is high more.
Because relative error is bigger, the accumulation of error is wayward, so measuring accuracy is not high when 3) using conventional welding inspection ruler to measure cylindrical shape welded tube misalignment.
In view of above reason, under the functions of use situation that does not change conventional welding inspection ruler (welding inspection ruler III type), its positive institutional framework is designed to structure as shown in Figure 1, be called change span welding inspection ruler.
Utilize when becoming span welding inspection ruler measurement welded tube weld reinforcement, use a method to improve measuring accuracy by dwindling span, its process repeats no more.Now main the introduction utilizes change span welding inspection ruler to the wrong measuring method that becomes of welded tube, as shown in Figure 7, at first undercut pit gauge span is transferred to maximum, fixing undercut pit gauge slide block, weld seam occupy in the middle of the span, horizontal mobile weld bead height chi is measured weld seam both sides height, and both differences are unfitness of butt joint.Facts have proved that then measuring error is more little for span big more (can not greater than diameter of steel tube).
As seen, the utility model mainly contains following some advantage:
1, conventional welding inspection ruler can be divided into 40 types, 45 types, 60 types etc. according to the difference of measuring width.Becoming the span welding inspection ruler can replace multiple model welding inspection ruler by changing span, also can be used as I, II, III type welding inspection ruler usefulness, reaches a chi and uses effect more, can measure the different in width weld reinforcement.
2, by formula (1), (2) as can be known, when measuring the welded tube weld reinforcement, measuring error and Δ and welding inspection ruler span L journey exponential relationship, span has change slightly, and error then sharply changes.Therefore, use change span welding inspection ruler to improve measuring accuracy by dwindling the welding inspection ruler span.
3, to utilize when becoming span welding inspection ruler measurement welded tube misalignment, ratio of precision is utilized conventional welding inspection ruler measuring accuracy height, and is easy to operate.
4, in order to record the more accurate weld reinforcement of weld seam, can record error b with the method for Fig. 3, deduct error amount with the weld reinforcement measured value then and be the true reinforcement of weld seam (conventional welding inspection ruler also can), utilize change span welding inspection ruler to make and the value (0.5mm or 1mm) of error amount b into being easy to calculate make that calculating is more convenient, simple by the adjusting span.In addition, the weld bead height chi can be designed to the vernier form, then error amount can reach 0.05mm.
5, become the span welding inspection ruler and use flexible, easy operating.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of being done, be equal to replacement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. one kind becomes the span welding inspection ruler, comprise main scale part, height gauge part, undercut pit gauge part and vertical scale, described height gauge partly comprises height gauge body and height gauge locking device, described undercut pit gauge partly comprises undercut pit gauge body and undercut pit gauge locking device, it is characterized in that: described main scale part also comprises horizontal scale, and described horizontal scale is perpendicular to described vertical scale; Described height gauge part also comprises height gauge slide block and height gauge slide block crosswise fixed device, and described height gauge body is arranged on the described height gauge slide block; Described undercut pit gauge part also comprises undercut pit gauge slide block and undercut pit gauge slide block crosswise fixed device, and described undercut pit gauge body is arranged on the described undercut pit gauge slide block.
2. change span welding inspection ruler according to claim 1 is characterized in that: described height gauge locking device is arranged on the described height gauge slide block.
3. change span welding inspection ruler according to claim 1 is characterized in that: described undercut pit gauge locking device is arranged on the described undercut pit gauge slide block.
4. change span welding inspection ruler according to claim 1 is characterized in that: described height gauge slide block can slide on the direction parallel with described horizontal scale.
5. change span welding inspection ruler according to claim 1 is characterized in that: described undercut pit gauge slide block can slide on the direction parallel with described horizontal scale.
6. change span welding inspection ruler according to claim 1 is characterized in that: described height gauge partly is the vernier form.
7. change span welding inspection ruler according to claim 1 is characterized in that: described main scale partly is provided with described vertical scale.
8. change span welding inspection ruler according to claim 1 is characterized in that: described main scale part comprises that also slide rail, described slide rail are parallel to described horizontal scale, and described height gauge slide block and described undercut pit gauge slide block can slide on described slide rail.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205916844U CN201852539U (en) | 2010-11-04 | 2010-11-04 | Welding inspection ruler with changeable span |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205916844U CN201852539U (en) | 2010-11-04 | 2010-11-04 | Welding inspection ruler with changeable span |
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| CN201852539U true CN201852539U (en) | 2011-06-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673824A (en) * | 2013-12-13 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Double-base weld bead height measuring scale and method |
| CN104697412A (en) * | 2015-03-26 | 2015-06-10 | 中国人民解放军驻国营三〇七厂军事代表室 | Fast inspection tool and method for pipeline welding dislocation |
| CN105444649A (en) * | 2016-01-06 | 2016-03-30 | 东方电气集团东方锅炉股份有限公司 | Boiler collecting box pipe joint circumferential inclination measurement apparatus and measurement method |
| CN106767248A (en) * | 2016-12-13 | 2017-05-31 | 中铁物总技术有限公司 | A kind of welding point aligns measurement apparatus and aligns measuring method |
| CN108519035A (en) * | 2018-04-16 | 2018-09-11 | 中交第公路工程局有限公司 | U ribs and roof and floor Size of welds size and detection device and method |
| CN112197673A (en) * | 2020-09-10 | 2021-01-08 | 渤海造船厂集团有限公司 | Device and method for measuring overall dimension of weld joint |
-
2010
- 2010-11-04 CN CN2010205916844U patent/CN201852539U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673824A (en) * | 2013-12-13 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Double-base weld bead height measuring scale and method |
| CN104697412A (en) * | 2015-03-26 | 2015-06-10 | 中国人民解放军驻国营三〇七厂军事代表室 | Fast inspection tool and method for pipeline welding dislocation |
| CN104697412B (en) * | 2015-03-26 | 2018-09-04 | 中国人民解放军驻国营三〇七厂军事代表室 | A kind of welding of pipeline misplaces the quick instruments of inspection and method |
| CN105444649A (en) * | 2016-01-06 | 2016-03-30 | 东方电气集团东方锅炉股份有限公司 | Boiler collecting box pipe joint circumferential inclination measurement apparatus and measurement method |
| CN105444649B (en) * | 2016-01-06 | 2018-05-11 | 东方电气集团东方锅炉股份有限公司 | The circumferential inclined measuring device of boiler header pipe joint and measuring method |
| CN106767248A (en) * | 2016-12-13 | 2017-05-31 | 中铁物总技术有限公司 | A kind of welding point aligns measurement apparatus and aligns measuring method |
| CN108519035A (en) * | 2018-04-16 | 2018-09-11 | 中交第公路工程局有限公司 | U ribs and roof and floor Size of welds size and detection device and method |
| CN112197673A (en) * | 2020-09-10 | 2021-01-08 | 渤海造船厂集团有限公司 | Device and method for measuring overall dimension of weld joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20181104 |