CN105157600A - Steel pipe contour online measurement method - Google Patents
Steel pipe contour online measurement method Download PDFInfo
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- CN105157600A CN105157600A CN201510286377.2A CN201510286377A CN105157600A CN 105157600 A CN105157600 A CN 105157600A CN 201510286377 A CN201510286377 A CN 201510286377A CN 105157600 A CN105157600 A CN 105157600A
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- laser displacement
- steel pipe
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Abstract
A steel pipe contour online measurement method comprises a first step of installing four laser displacement sensors capable of moving up and down synchronously at two sides, whose distance is greater than the diameter of a steel pipe, to an end of the steel pipe, dividing the laser displacement sensors into two groups by taking one laser displacement sensor at one side and one corresponding laser displacement sensor at the other side as a group; a second step of using the two groups of laser displacement sensors for respectively measuring two groups of contour data of the steel pipe; a third step of calculating an included angle between a connecting line of the laser displacement sensors in one group and a radial cross section of the steel pipe based on the two groups of contour data; and a fourth step of performing projection mapping of the above included angle so as to obtain contour data of the radial cross section of the steel pipe. The invention has the advantage of eliminating errors due to axis deviation of the steel pipe.
Description
Technical field
The present invention relates to for measuring profile or curvature, such as, measure the method for profile, espespecially a kind of steel pipe profile On-line Measuring Method.
Background technology
The fields such as pressure vessel, Feng Ta, oceanographic engineering, the application of large diameter steel pipe (2000mm ~ 4000mm) is more and more extensive.The construction of large diameter steel pipe generally needs that experience rolls, longitudinal seam welding, the process such as circumferential weld spreading and welding.Weld after the quality that steel pipe rolls can directly have influence on and organize right difficulty and quality.The profile measuring steel pipe just can obtain girth and the ovality of steel pipe indirectly, thus judges the quality that steel pipe rolls.
The method of current measurement steel pipe profile mainly contains hand dipping method, image method, optical measuring method etc.Hand dipping relies on the instruments such as meter ruler, and for large diameter steel pipe, measurement difficulty is large, precision is low.It is higher that image method measures minor-diameter steel-tube contour accuracy, but for large diameter steel pipe, too high to the requirement of pixel, implement comparatively difficulty.Optical measuring method develops rapidly at present, comparatively ripe is utilize laser displacement sensor to measure steel pipe profile, and implementation mainly contains turning arm type (such as patent CN102650516A), circuit orbit formula (such as patent CN1734233A), gantry frame type (such as patent CN102489547A) etc.Turning arm type method utilizes an arm rotated around stationary shaft and the laser displacement sensor that is arranged on arm to realize profile measurement.Circuit orbit formula method is the circuit orbit by placing a standard outside pipe, installs and can realize profile measurement around the laser displacement sensor of orbital motion above track.Gantry frame type method installs laser displacement sensor by vertically supporting portal frame two, and rely on sensor synchronously move up and down realize the profile measurement to being placed on steel pipe in the middle of portal frame.The advantage of optical measuring method is that measuring speed is fast, precision is high, but above three kinds of modes all exist the error problem caused by steel pipe axis runout without exception.
Summary of the invention
For the shortcoming of prior art, the object of the present invention is to provide a kind of steel pipe profile On-line Measuring Method.The error caused by steel pipe axis runout can be eliminated.
Described measuring method is laid in steel pipe two ends intersection by four laser displacement sensors of point two groups, work, synchronously move up and down and steel pipe to be measured is scanned, so can obtain two composition certain angles and with the outline data of axis off plumb steel tube section, again these two cross section profile data are calculated, thus accurately can obtain the standard section profile with steel pipe axes normal, by can directly obtain the parameters such as steel pipe girth, ovality, mean diameter to the process of nominal contour data.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of steel pipe profile On-line Measuring Method, it is characterized in that comprising the steps:
One, two laser displacement sensors that can synchronously move up and down are installed in the every side, position being greater than steel pipe caliber in steel tube end part both sides, and the laser displacement sensor that a laser displacement sensor on side corresponds to opposite side is one group, is divided into two groups;
Two, two groups of laser displacement sensors are utilized to measure two groups of outline datas of steel pipe respectively;
Three, the angle between laser displacement sensor line wherein in one group and steel pipe radial section is calculated according to these two groups of outline datas;
Four, above-mentioned angle is carried out projection mapping, thus obtain the outline data of steel pipe radial section.
The invention has the beneficial effects as follows: the error caused by steel pipe axis runout can be eliminated.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is laser displacement sensor mounting structure schematic diagram in the embodiment of the present invention.
Fig. 2 is the schematic diagram that laser displacement sensor of the present invention measures profile.
Embodiment
See accompanying drawing, a kind of steel pipe profile of the present invention On-line Measuring Method embodiment, is characterized in that comprising the steps:
One, two root posts 1 are installed in the position being greater than steel pipe caliber in steel tube end part both sides, 2, first column 1 is installed the first laser displacement sensor 3 and the second laser displacement sensor 4, second column 2 installs the 3rd laser displacement sensor 5 and the 4th laser displacement sensor 6, four laser displacement sensors can synchronously be moved up and down, the first laser displacement sensor 3 and the 4th laser displacement sensor 6 in described laser displacement sensor is made to be first group, second laser displacement sensor 4 and the 3rd laser displacement sensor 5 are second group, two laser displacement sensors often in group are relative across steel pipe,
Two, by above-mentioned laser displacement sensor synchronizing moving to a certain height, start laser displacement sensor measure the distance L of each laser displacement sensor to steel pipe walls respectively
3, L
4, L
5, L
6;
Three, the first chord length D of steel pipe radial section on this height is calculated according to the data measured by first group of laser displacement sensor 3,6
36=L
36-L
3-L
6the second chord length D of steel pipe radial section on this height is calculated with according to the data measured by second group of laser displacement sensor 4,5
45=L
45-L
4-L
5, and comply with
calculate the angle β between first group of laser displacement sensor line and steel pipe radial section;
Four, the angle β between first group of laser displacement sensor line and steel pipe radial section is carried out projection mapping, the chord length D=D of steel pipe radial cross-sectional profile
45cos β or D=D
36cos (alpha+beta) thus obtain the outline data of steel pipe radial section.
Symbol description:
α is the first laser displacement sensor 3 and the 4th laser displacement sensor 6 line to the angle of the second laser displacement sensor 4 and the 3rd laser displacement sensor 5 line.
β is that the first laser displacement sensor 3 and the 4th laser displacement sensor 6 line are to the angle of steel pipe radial section.
L
3represent its measured by the first laser displacement sensor distance to steel pipe walls; L
4represent its measured by the second laser displacement sensor distance to steel pipe walls; L
5represent that its measured by the 3rd laser displacement sensor is to the distance of steel pipe walls; L
6represent that its measured by the 4th laser displacement sensor is to the distance of steel pipe walls.
L
36represent the distance between two laser displacement sensors 3 and 6 in first group of laser displacement sensor.
L
45represent the distance between two laser displacement sensors 4 and 5 in second group of laser displacement sensor.
In order to accurately calculate angle beta, the numerical value on all height recorded can be carried out calculating and averaging by above formula.Finally, the contour shape directly recorded by sensor 4,5 maps the profile that just can obtain standard section by β angular projection.
Claims (2)
1. a steel pipe profile On-line Measuring Method, is characterized in that comprising the steps:
One, two laser displacement sensors that can synchronously move up and down are installed in the position being greater than steel pipe caliber in steel tube end part both sides, and the laser displacement sensor that a laser displacement sensor on side corresponds to opposite side is one group, is divided into two groups;
Two, two groups of laser displacement sensors are utilized to measure two groups of outline datas of steel pipe respectively;
Three, the angle between laser displacement sensor line wherein in one group and steel pipe radial section is calculated according to these two groups of outline datas;
Four, above-mentioned angle is carried out projection mapping, thus obtain the outline data of steel pipe radial section.
2. a kind of steel pipe profile On-line Measuring Method according to claim 1, is characterized in that comprising the steps:
One, two root posts 1 are installed in the position being greater than steel pipe caliber in steel tube end part both sides, 2, first column 1 is installed the first laser displacement sensor 3 and the second laser displacement sensor 4, second column 2 installs the 3rd laser displacement sensor 5 and the 4th laser displacement sensor 6, four laser displacement sensors can synchronously be moved up and down, the first laser displacement sensor 3 and the 4th laser displacement sensor 6 in described laser displacement sensor is made to be first group, second laser displacement sensor 4 and the 3rd laser displacement sensor 5 are second group, two laser displacement sensors often in group are relative across steel pipe,
Two, by above-mentioned laser displacement sensor synchronizing moving to a certain height, start laser displacement sensor measure the distance L of each laser displacement sensor to steel pipe walls respectively
3, L
4, L
5, L
6;
Three, the first chord length D of steel pipe radial section on this height is calculated according to the data measured by first group of laser displacement sensor 3,6
36=L
36-L
3-L
6the second chord length D of steel pipe radial section on this height is calculated with according to the data measured by second group of laser displacement sensor 4,5
45=L
45-L
4-L
5, and comply with
calculate the angle β between first group of laser displacement sensor line and steel pipe radial section;
Four, the angle β between first group of laser displacement sensor line and steel pipe radial section is carried out projection mapping, the chord length D=D of steel pipe radial cross-sectional profile
45cos β or D=D
36cos (alpha+beta) thus obtain the outline data of steel pipe radial section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286377.2A CN105157600B (en) | 2015-05-30 | 2015-05-30 | A kind of steel pipe profile On-line Measuring Method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286377.2A CN105157600B (en) | 2015-05-30 | 2015-05-30 | A kind of steel pipe profile On-line Measuring Method |
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| CN105157600A true CN105157600A (en) | 2015-12-16 |
| CN105157600B CN105157600B (en) | 2017-10-31 |
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| CN201510286377.2A Active CN105157600B (en) | 2015-05-30 | 2015-05-30 | A kind of steel pipe profile On-line Measuring Method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382893A (en) * | 2016-11-30 | 2017-02-08 | 佛山市海科知识产权交易有限公司 | Round log diameter detection device and method |
| CN106403822A (en) * | 2016-06-27 | 2017-02-15 | 西南科技大学 | Apparatus of monitoring civil engineering indoor model displacement by using laser |
| CN106623515A (en) * | 2016-12-30 | 2017-05-10 | 深圳赤湾胜宝旺工程有限公司 | Heavy steel pipe matching and assembling method and system |
| CN107228637A (en) * | 2017-07-31 | 2017-10-03 | 中国人民解放军军械工程学院 | Tube inner profile measurement method based on laser triangulation |
| CN108413890A (en) * | 2017-12-25 | 2018-08-17 | 重庆达德机械制造有限公司 | A kind of multifunctional steam vehicle exhaust pipe detection device |
| CN111023964A (en) * | 2019-12-10 | 2020-04-17 | 广东省智能制造研究所 | Online detection device for surface profile and surface quality |
| CN112249592A (en) * | 2020-10-10 | 2021-01-22 | 山东开泰智能抛喷丸技术研究院有限公司 | Conveying device for steel pipe conveying and control system thereof |
| WO2022007872A1 (en) * | 2020-07-09 | 2022-01-13 | 中建三局第二建设工程有限责任公司 | Angle-adjustable pipeline assembly robot and pipeline group angle-adjusting method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403822A (en) * | 2016-06-27 | 2017-02-15 | 西南科技大学 | Apparatus of monitoring civil engineering indoor model displacement by using laser |
| CN106382893A (en) * | 2016-11-30 | 2017-02-08 | 佛山市海科知识产权交易有限公司 | Round log diameter detection device and method |
| CN106623515A (en) * | 2016-12-30 | 2017-05-10 | 深圳赤湾胜宝旺工程有限公司 | Heavy steel pipe matching and assembling method and system |
| CN106623515B (en) * | 2016-12-30 | 2019-04-30 | 深圳赤湾胜宝旺工程有限公司 | Heavy steel tube matching and group are to method and system |
| CN107228637A (en) * | 2017-07-31 | 2017-10-03 | 中国人民解放军军械工程学院 | Tube inner profile measurement method based on laser triangulation |
| CN108413890A (en) * | 2017-12-25 | 2018-08-17 | 重庆达德机械制造有限公司 | A kind of multifunctional steam vehicle exhaust pipe detection device |
| CN111023964A (en) * | 2019-12-10 | 2020-04-17 | 广东省智能制造研究所 | Online detection device for surface profile and surface quality |
| WO2022007872A1 (en) * | 2020-07-09 | 2022-01-13 | 中建三局第二建设工程有限责任公司 | Angle-adjustable pipeline assembly robot and pipeline group angle-adjusting method |
| CN112249592A (en) * | 2020-10-10 | 2021-01-22 | 山东开泰智能抛喷丸技术研究院有限公司 | Conveying device for steel pipe conveying and control system thereof |
| CN112249592B (en) * | 2020-10-10 | 2022-04-26 | 山东开泰智能抛喷丸技术研究院有限公司 | Conveying device for steel pipe conveying and control system thereof |
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| CN105157600B (en) | 2017-10-31 |
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