CN113532278A - Steel pipe diameter and circumference measuring device - Google Patents
Steel pipe diameter and circumference measuring device Download PDFInfo
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- CN113532278A CN113532278A CN202010233065.6A CN202010233065A CN113532278A CN 113532278 A CN113532278 A CN 113532278A CN 202010233065 A CN202010233065 A CN 202010233065A CN 113532278 A CN113532278 A CN 113532278A
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- steel pipe
- connecting rod
- distance measuring
- measuring sensor
- circumference
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a device for measuring the diameter and the circumference of a steel pipe, which comprises a distance measuring sensor, a distance measuring sensor bracket, a positioning plate A, a locking part A, a linear bearing A, a connecting rod, a linear bearing B, a locking part B, a positioning plate B, a sliding block fixing part, a translation table, a rotary table and a flange Increasing the yield and the efficiency.
Description
Technical Field
The invention relates to the field of distance measuring sensors, machinery and automatic control, in particular to a device for measuring the diameter and the circumference of a steel pipe.
Background
The spiral steel pipe or the straight seam steel pipe is widely applied to the field of water supply, petroleum and natural gas transmission, a pipeline system is formed by butt welding a plurality of steel pipes through the steel pipes, in order to ensure the welding seam strength of the butt joint of the steel pipes and the butt welding construction operation, the requirements on the diameter and the ovality or the diameter difference of the end of the steel pipe are high, the diameter and the diameter difference of the steel pipe are strictly controlled when the steel pipe factory produces the steel pipe, because the steel pipe is not in a regular circle and the diameter is not easy to be measured in the production process, therefore, the diameter of the steel pipe is estimated by winding a steel tape on the outer circle of the steel pipe in various large-scale steel pipe production, but the method can not evaluate the diameter difference or the ovality of the steel pipe, an automatic steel pipe diameter and circumference measuring device which is accurate and easy to operate is urgently needed in the actual production, on the one hand, the automation of the measurement can be improved, the labor is saved, on the other hand, the diameter difference or the ovality of the steel pipe can be detected while the circumference of the steel pipe is automatically measured, and more accurate steel pipe size parameters are provided for further improving the steel pipe forming process and users. At present, most steel pipe production enterprises still rely on the human steel tape measure the circumference of the steel pipe around the excircle of the steel pipe to estimate the diameter of the steel pipe. A device for measuring the diameter and the circumference of a steel pipe is urgently needed in actual production.
Disclosure of Invention
The invention mainly solves the technical problem of providing a steel pipe diameter and circumference measuring device, a distance measuring sensor is fixed on a sliding block of a translation table through a connecting rod, a base of the translation table is fixed on a rotary table, the rotary table rotates for a circle at a constant speed during measurement, the distance measuring sensor rotates around a central shaft of the rotary table and continuously measures the distance from the inner surface of a steel pipe to the distance measuring sensor, the measured data is stored in an industrial personal computer and the diameter and the circumference of the steel pipe are calculated, the connecting rod of the distance measuring sensor is replaced to meet the measurement requirements of different pipe diameters, a high-precision positioning plate is used for ensuring the accurate positioning of the distance measuring sensor during the replacement of the connecting rod, the measurement accuracy is reliably ensured, the automatic measurement of the diameter and the circumference of the steel pipe is realized, the labor cost is reduced, and the yield and the efficiency are increased.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a steel pipe diameter and girth measuring device, including range finding sensor (1), range finding sensor support (2), locating plate A (3), retaining member A (4), linear bearing A (5), connecting rod (6), linear bearing B (7), retaining member B (8), locating plate B (9), slider mounting (10), translation platform (11), revolving platform (13), flange (15), range finding sensor (1) install in range finding sensor support (2), sensor support (2) fix on retaining member A (4) through bolt and locating plate A (3), retaining member A (4) pass through the bolt fastening in linear bearing A (5), locating plate B (9) pass through the bolt fastening in retaining member B (8), retaining member B8 pass through the bolt and linear bearing B (7) be fixed in on slider mounting (10), the sliding block fixing part (10) is fixed on the sliding block of the translation table (11), one end of the connecting rod (6) penetrates through the linear bearing A (5) and the locking part A (4) to the positioning plate A (3), the bolt of the locking part A (4) is used for locking, the other end of the connecting rod (6) passes through the linear bearing B (7) and the locking part B (8) to the positioning plate B (9), the bolt of the locking piece B (8) is used for locking, the base of the translation table (11) is fixed on the rotary table (13), the rotary table (13) can be driven to rotate by a servo motor B (14), the translation table (11) can translate the distance measuring sensor (1) through the driving of a servo motor A (12) to adapt to the measuring requirements of different pipe diameters, the rotary table (13) is fixed on a flange (15), and the flange (15) is fixed on the central shaft end (16) of the expanding machine.
In a preferred embodiment of the invention, the device for measuring the diameter and the circumference of the steel pipe further comprises the steel pipe (17), a central shaft end (16) of the expanding machine, a sensor cable (18), a cable A (19), a cable B (20), an industrial personal computer (21) and a display (22).
The distance measuring sensor (1) is connected into an industrial personal computer (21) through a sensor cable (18), the rotary table (13) is driven by a servo motor B (14), the servo motor B (14) is connected into the industrial personal computer (21) through a cable B (20), the translation table (11) is driven by a servo motor A (12), and the servo motor A (12) is connected into the industrial personal computer (21) through a cable A (19).
In a preferred embodiment of the invention, the display (22) is connected to an industrial control computer (21).
In a preferred embodiment of the invention, the distance measuring sensor (1) is a laser displacement sensor, and the measuring range is 30 mm-70 mm.
In a preferred embodiment of the invention, the stroke of the translation stage (11) is 200mm, the total length is 450mm, and the displacement sensor is used for moving the position of the distance measuring sensor (1) when the radius variation of the steel pipe (17) is within the effective stroke range of the translation stage (11) so as to ensure that the measuring distance of the distance measuring sensor (1) is within the effective range. When the radius variation of the steel pipe (17) exceeds the stroke range of the translation table (11), the connecting rod (6) needs to be replaced.
In a preferred embodiment of the invention, the diameter of the connecting rod (6) is 25mm, the lengths are 290mm, 490mm, 690mm, 890mm and 1090mm respectively, different connecting rods (6) are selected mainly according to different diameters of the tested steel pipe (17), and the range of the diameter (inner diameter) of the measurable steel pipe (17) is 500 mm-2580 mm.
In a preferred embodiment of the invention, the positioning plate A (3) and the positioning plate B (9) are mainly used for accurately positioning the connecting rod (6), and the accurate positioning mode performed by depending on the precision of a machined part is more favorable for ensuring the measurement precision of the diameter and the circumference of the steel pipe (17).
In a preferred embodiment of the invention, the locking parts (4) and (8) are used for fixing the connecting rod (6) in a bolt clamping mode, so that the connecting rod (6) can be replaced quickly.
In a preferred embodiment of the invention, the optical axis of the distance measuring sensor (1) is in the same straight line with the axis of the connecting rod (6), and the axis of the connecting rod (6) is vertically crossed with the rotation axis of the rotary table (13), so that the measuring accuracy of the distance measuring sensor (1) on the diameter and the circumference of the steel pipe (17) cannot be influenced when the distance measuring sensor (1) slightly rotates around the axis of the connecting rod (6) during the replacement of the connecting rod (6).
In a preferred embodiment of the present invention, the rotating table (13) rotates for a period of time ranging from 5 to 30 seconds.
In a preferred embodiment of the invention, the rotating speed and the rotating angle of the rotary table (13) are realized by controlling the rotating speed and the rotating angle of the servo motor B (14), and a servo driver is controlled by an industrial personal computer (21) and controls the servo motor B (14).
In a preferred embodiment of the invention, when the rotary table (13) rotates for one circle at a constant speed during measurement, the distance measuring sensor (1) rotates around the central shaft of the rotary table (13) and continuously measures the distance from the inner surface of the steel pipe (17) to the distance measuring sensor, and the measured data is stored in an industrial personal computer and the diameter and the circumference of the steel pipe (17) are calculated.
In a preferred embodiment of the invention, the central shaft end (16) of the expanding machine is an existing central shaft end of the expanding machine of an enterprise.
The invention has the beneficial effects that: the utility model provides a steel pipe diameter and girth measuring device, distance measuring sensor is fixed in on the translation platform slider through the connecting rod, translation platform base is fixed in the revolving platform, revolving platform constant speed is rotatory a week during the measurement, distance measuring sensor is rotatory around revolving platform center pin and continuous measurement steel pipe internal surface to distance measuring sensor's distance, the data that obtain of measurement are preserved at the industrial computer and are calculated out steel pipe diameter and girth, through changing the measurement demand of distance measuring sensor connecting rod in order to satisfy different pipe diameters, the accurate location of distance measuring sensor when changing the connecting rod is guaranteed to application high accuracy locating plate, reliably guarantee the measuring accuracy, realize the automated measurement of steel pipe diameter and girth, reduce the cost of labor, increase in production and efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a front view of a steel pipe diameter and circumference measuring device according to the present invention;
FIG. 2 is a side view of a steel pipe diameter and circumference measuring apparatus according to the present invention;
FIG. 3 is a front and side view of a ranging sensor bracket and connecting rod assembly of the present invention;
FIG. 4 is a front and side view of a locating plate A of the present invention;
FIG. 5 is a front and side view of retaining member A of the present invention;
FIG. 6 is a front and side view of a linear bearing A of the present invention;
FIG. 7 is a front and side view of the connecting rod of the present invention;
FIG. 8 is a front and side view of a linear bearing B of the present invention;
FIG. 9 is a front and side view of retaining member B of the present invention;
FIG. 10 is a front and side view of a positioning plate B of the present invention;
FIG. 11 is a front and side view of the slider mount of the present invention;
FIG. 12 is a front and side view of a translation stage of the present invention;
FIG. 13 is a front and side view of a turntable of the present invention;
FIG. 14 is a front view and a side view of the present invention in relation to the position of the turret and translator;
FIG. 15 is a front and side view of a flange of the present invention;
FIG. 16 is a front and side view of the center axial end of the expanding machine of the present invention;
FIG. 17 is a front and side view of the turntable, flange and central shaft end of the expanding mill of the present invention;
FIG. 18 is a front and side view of a steel pipe of the present invention;
in the figure: 1. a ranging sensor; 2. a ranging sensor support; 3. positioning a plate A; 4. a locking member A; 5. a linear bearing A; 6. a connecting rod; 7. a linear bearing B; 8. a locking member B; 9. positioning a plate B; 10. a slider fixing member; 11. a translation stage; 12. a servo motor A; 13. a turntable; 14. a servo motor B; 15. a flange; 16. the central shaft end of the expanding machine; 17. a steel pipe; 18. a sensor cable; 19. a cable A; 20. a cable B; 21. an industrial personal computer; 22. a display.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 18, an embodiment of the present invention includes:
the utility model provides a steel pipe diameter and girth measuring device, range sensor 1 install in range sensor support 2, sensor support 2 pass through the bolt and fix on retaining member A4 with locating plate A3, retaining member A4 pass through bolt fastening in linear bearing A5, locating plate B9 pass through bolt fastening in retaining member B8, retaining member B8 be fixed in slider mounting 10 through bolt and linear bearing B7, slider mounting 10 be fixed in the slider of translation platform 11 on, connecting rod 6 one end pass linear bearing A5 and retaining member A4 to locating plate A3, lock through the bolt of retaining member A4, the other end of connecting rod 6 pass linear bearing B7 and retaining member B8 to locating plate B9, lock through the bolt of retaining member B8, translation platform 11 base is fixed in revolving platform 13, revolving platform 13 can rotate through servo motor B14 drive, the translation platform 11 is driven by a servo motor A12 to translate the distance measuring sensor 1 for measuring requirements of different pipe diameters, the rotary platform 13 is fixed on a flange 15, the flange 15 is fixed at the central shaft end 16 of the expanding machine, the distance measuring sensor 1 is connected to an industrial personal computer 21 through a sensor cable 18, and the display 22 is connected to the industrial personal computer 21. The servo motor A12 is connected to the industrial personal computer 21 through a cable A19, and the servo motor B14 is connected to the industrial personal computer 21 through a cable B20.
In a preferred embodiment of the present invention, the distance measuring sensor 1 is a laser displacement sensor, and the measuring range is 30mm to 70 mm.
In a preferred embodiment of the present invention, the stroke of the translation stage 11 is 200mm, and the total length is 450mm, so that when the radius variation of the steel pipe 17 is within the effective stroke range of the translation stage 11, the position of the distance measuring sensor 1 is moved, and the distance measured by the distance measuring sensor 1 is ensured to be within the effective range. When the radius variation of the steel pipe 17 exceeds the stroke range of the translation stage 11, the connecting rod 6 needs to be replaced.
In a preferred embodiment of the invention, the diameter of the connecting rod 6 is 25mm, the lengths thereof are 290mm, 490mm, 690mm, 890mm and 1090mm respectively, different connecting rods 6 are selected mainly according to different diameters of the tested steel pipe 17, and the diameter (inner diameter) range of the measurable steel pipe 17 is 500 mm-2580 mm.
In a preferred embodiment of the present invention, the positioning plate a3 and the positioning plate B9 are mainly used for accurately positioning the connecting rod 6, and the accurate positioning method by means of the precision of the machining member is more favorable for ensuring the measurement precision of the diameter and the circumference of the steel pipe 17.
In a preferred embodiment of the present invention, the locking members a4 and B8 are used to fix the connecting rod 6 by bolt clamping, which facilitates quick replacement of the connecting rod 6.
In a preferred embodiment of the invention, the optical axis of the distance measuring sensor 1 is in the same straight line with the axis of the connecting rod 6, and the axis of the connecting rod 6 is perpendicular to the rotation axis of the rotary table 13, so that the measuring accuracy of the distance measuring sensor 1 on the diameter and the circumference of the steel pipe 17 cannot be influenced when the distance measuring sensor 1 slightly rotates around the axis of the connecting rod 6 when the connecting rod 6 is replaced.
In a preferred embodiment of the present invention, the rotating table 13 rotates for a period of time ranging from 5 to 30 seconds.
In a preferred embodiment of the present invention, the rotation speed and rotation angle of the turntable 13 are controlled by controlling the rotation speed and rotation angle of the servo motor B14, and the servo driver is controlled by the industrial personal computer 21 and the servo driver controls the servo motor B14.
In a preferred embodiment of the present invention, the expander central shaft end 16 is an existing expander central shaft end of a company.
In a preferred embodiment of the present invention, the turntable 13 rotates at a fixed speed during the measurement, the distance measuring sensor 1 rotates around the central axis of the turntable 13 and continuously measures the distance from the inner surface of the steel pipe 17 to the sensor, and the measured data is stored in an industrial computer and the diameter and circumference of the steel pipe 17 are calculated.
In a preferred embodiment of the present invention, the central line of the stroke of the translation stage 11 perpendicularly intersects the central line of the rotary table 13, the distance from the rotary center of the rotary table 13 to the front end surface of the ranging sensor holder 2, i.e. the starting point of the range of the ranging sensor 1, is 215mm, the reading of the ranging sensor 1 is 35.15mm, the radius of the measured point of the steel pipe 17 is 250.15mm, in the embodiment, the ranging sensor 1 measures 4000 points along the circumference, so the included angle between the radii obtained by two adjacent measurements is 360 °/4000=0.09 °, the arc length between two adjacent radii is 3.14 × 2 × 250.15mm × 0.09 °/360 °/0.393 mm, the 4000 radii obtained by measurement are correspondingly calculated to obtain the circumference of the whole circumference, the main reason that the circumference of the circumference is not directly calculated by using the measured radius is that the steel pipe is not a regular circle, the rotary shaft of the rotary table 13 may not coincide with the central axis of the steel pipe 17, there is a slight difference between the two, so the circumference is calculated by the above calculation method.
In summary, the invention provides a device for measuring the diameter and the circumference of a steel pipe, a distance measuring sensor is fixed on a sliding block of a translation table through a connecting rod, a base of the translation table is fixed on a rotary table, the rotary table rotates for a circle at a constant speed during measurement, the distance measuring sensor rotates around a central shaft of the rotary table and continuously measures the distance from the inner surface of the steel pipe to the distance measuring sensor, the measured data is stored in an industrial personal computer and the diameter and the circumference of the steel pipe are calculated, the connecting rod of the distance measuring sensor is replaced to meet the measurement requirements of different pipe diameters, a high-precision positioning plate is used for ensuring the accurate positioning of the distance measuring sensor during the replacement of the connecting rod, the measurement accuracy is reliably ensured, the automatic measurement of the diameter and the circumference of the steel pipe is realized, the labor cost is reduced, and the production and efficiency are increased.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A steel pipe diameter and circumference measuring device is characterized by comprising a distance measuring sensor (1), a distance measuring sensor support (2), a positioning plate A (3), a locking part A (4), a linear bearing A (5), a connecting rod (6), a linear bearing B (7), a locking part B (8), a positioning plate B (9), a slider fixing part (10), a translation table (11), a rotary table (13) and a flange (15), wherein the distance measuring sensor (1) is installed on the distance measuring sensor support (2), the sensor support (2) is fixed on the locking part A (4) through the bolt and the positioning plate A (3), the locking part A (4) is fixed on the linear bearing A (5) through the bolt, the positioning plate B (9) is fixed on the locking part B (8) through the bolt and the linear bearing B (7), the locking part B (8) is fixed on the slider fixing part (10) through the bolt and the linear bearing B (7), the sliding block fixing part (10) is fixed on the sliding block of the translation table (11), one end of the connecting rod (6) penetrates through the linear bearing A (5) and the locking part A (4) to the positioning plate A (3), the bolt of the locking part A (4) is used for locking, the other end of the connecting rod (6) passes through the linear bearing B (7) and the locking part B (8) to the positioning plate B (9), the bolt of the locking piece B (8) is used for locking, the base of the translation table (11) is fixed on the rotary table (13), the rotary table (13) can be driven to rotate by a servo motor B (14), the translation table (11) is driven by a servo motor A (12) to translate the distance measuring sensor (1) for measuring different pipe diameters, the rotary table (13) is fixed on a flange (15), and the flange (15) is fixed on the central shaft end (16) of the expanding machine.
2. The steel pipe diameter and circumference measuring device according to claim 1, wherein the connecting rods (6) of different lengths are selected according to the diameter of the steel pipe (17) to be tested.
3. The steel pipe diameter and circumference measuring device according to claim 1, wherein the translation stage (11) is used for moving the position of the distance measuring sensor (1) when the radius variation of the steel pipe (17) is within the effective travel range of the translation stage (11), so as to ensure that the distance measured by the distance measuring sensor (1) is within the effective range.
4. The steel pipe diameter and circumference measuring device according to claim 1, wherein the positioning plate A (3) and the positioning block B (9) are mainly used for accurate positioning of the connecting rod (6), and the accurate positioning mode of the machining part is favorable for ensuring the measuring accuracy of the diameter and the circumference of the steel pipe (17).
5. The steel pipe diameter and circumference measuring device according to claim 1, wherein the locking member A (4) and the locking member B (8) are used for fixing the connecting rod (6) in a bolt clamping manner, so that the connecting rod (6) can be replaced quickly.
6. The steel pipe diameter and circumference measuring device according to claim 1, wherein the optical axis of the distance measuring sensor (1) is aligned with the axis of the connecting rod (6), and the axis of the connecting rod (6) is perpendicular to the rotation axis of the rotary table (13), so that the distance measuring sensor (1) does not affect the measuring accuracy of the distance measuring sensor (1) on the diameter and circumference of the steel pipe (17) when slightly rotating around the axis of the connecting rod (6) during the replacement of the connecting rod (6).
7. The steel pipe diameter and circumference measuring device according to claim 1, wherein the turntable (13) rotates one circle at a constant speed during measurement, the distance measuring sensor (1) rotates around the central axis of the turntable (13) and continuously measures the distance from the inner surface of the steel pipe (17) to the distance measuring sensor (1), and the measured data is stored in an industrial computer and the diameter and circumference of the steel pipe (17) are calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233065.6A CN113532278B (en) | 2020-03-29 | 2020-03-29 | Steel pipe diameter and circumference measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233065.6A CN113532278B (en) | 2020-03-29 | 2020-03-29 | Steel pipe diameter and circumference measuring device |
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| Publication Number | Publication Date |
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| CN113532278A true CN113532278A (en) | 2021-10-22 |
| CN113532278B CN113532278B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010233065.6A Active CN113532278B (en) | 2020-03-29 | 2020-03-29 | Steel pipe diameter and circumference measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459367A (en) * | 2022-01-12 | 2022-05-10 | 江苏首华智能装备有限公司 | Method for measuring actual diameter of carrier by area method |
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| JPH0465610A (en) * | 1990-07-05 | 1992-03-02 | Sumitomo Metal Ind Ltd | Shape measuring instrument for tube body |
| JPH09311034A (en) * | 1996-05-23 | 1997-12-02 | Sumitomo Metal Ind Ltd | Method and device for measuring inner diameter and inner circumference length of steel pipe |
| CN205448982U (en) * | 2016-03-28 | 2016-08-10 | 西安捷创测控技术有限公司 | Many parameter synthesis measuring device of large -diameter steel pipe pipe end |
| CN107300359A (en) * | 2017-08-03 | 2017-10-27 | 唐大春 | The detection means and method of irregular hole circumferential measurements and girth and diameter |
| CN207335658U (en) * | 2017-09-15 | 2018-05-08 | 中国石油天然气集团公司 | A kind of steel pipe girth and ellipticity measurement device |
-
2020
- 2020-03-29 CN CN202010233065.6A patent/CN113532278B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0465610A (en) * | 1990-07-05 | 1992-03-02 | Sumitomo Metal Ind Ltd | Shape measuring instrument for tube body |
| JPH09311034A (en) * | 1996-05-23 | 1997-12-02 | Sumitomo Metal Ind Ltd | Method and device for measuring inner diameter and inner circumference length of steel pipe |
| CN205448982U (en) * | 2016-03-28 | 2016-08-10 | 西安捷创测控技术有限公司 | Many parameter synthesis measuring device of large -diameter steel pipe pipe end |
| CN107300359A (en) * | 2017-08-03 | 2017-10-27 | 唐大春 | The detection means and method of irregular hole circumferential measurements and girth and diameter |
| CN207335658U (en) * | 2017-09-15 | 2018-05-08 | 中国石油天然气集团公司 | A kind of steel pipe girth and ellipticity measurement device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459367A (en) * | 2022-01-12 | 2022-05-10 | 江苏首华智能装备有限公司 | Method for measuring actual diameter of carrier by area method |
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| CN113532278B (en) | 2023-03-14 |
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