KR20140006572A - Large pipe length and straightness measuring device - Google Patents

Large pipe length and straightness measuring device Download PDF

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Publication number
KR20140006572A
KR20140006572A KR1020120073888A KR20120073888A KR20140006572A KR 20140006572 A KR20140006572 A KR 20140006572A KR 1020120073888 A KR1020120073888 A KR 1020120073888A KR 20120073888 A KR20120073888 A KR 20120073888A KR 20140006572 A KR20140006572 A KR 20140006572A
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KR
South Korea
Prior art keywords
large pipe
straightness
length
measuring
upper frame
Prior art date
Application number
KR1020120073888A
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Korean (ko)
Inventor
성용군
고종민
김동훈
강범수
구태완
Original Assignee
(주)디자인플랜트
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Priority to KR1020120073888A priority Critical patent/KR20140006572A/en
Publication of KR20140006572A publication Critical patent/KR20140006572A/en

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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
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/04—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B5/043—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

A plurality of feeders provided with a feed roller for supporting the large pipe and movable in the longitudinal direction; a pair of rotary rollers provided between the feeders to support the large pipe and rotate in the circumferential direction; It is provided in the lower portion of the roller and the rotating part consisting of a lifting unit for vertical movement of the rotating roller, and installed in the lower upper frame coupled to the lower frame provided in parallel with the conveyor, to enable the measurement of the length of the large pipe And a first measuring device and a second measuring device provided at one end of the bracket coupled to the upper frame to measure the straightness of the large pipe, thereby automating the length and straightness measuring process of the large pipe. To increase the accuracy of measurement data and shorten the measurement and inspection process And straightness relates to a measuring device.

Description

Large pipe length and straightness measuring device

The present invention relates to a device for measuring the length and straightness of a large pipe, and to a device for measuring the length and straightness of a large pipe that can automate the length and straightness measuring process of a large pipe using a machine.

The demand for crude oil and natural gas continues to increase worldwide, and in recent years, the demand for large pipes has exploded due to the introduction and expansion of nuclear power generation facilities in many countries. Such large pipes have a diameter of 600 mm. It is getting larger with 2100mm and 12000mm in length.

In addition, in the construction field, the use of large pipes, which are superior in structure and aesthetics, is gradually increasing in comparison with section steels. In response, domestic steel pipe companies are investing a lot in automation of large pipe production lines in order to increase productivity.

Such a large pipe is manufactured by a submerged arc welding (SAW) method, and a manufacturing process is performed by bending a plate of a flat plate by a hydraulic press, and after forming the first round, the reforming is performed. The large pipe is finally produced through the process, and length and straightness measurements are essential due to weld deformation and shrinkage.

Similar technology proposed in view of the above, Patent No. 20-0216123 pipe origin and straightness straightener registered in Korea Patent Office is disclosed, but this relates to the straightener of the pipe pipe, it does not solve the following problems It is true.

In the production process of such a large pipe, in particular, in the measurement of length and straightness, the situation is still manually inspected by the operator, and an error occurs depending on the measurement position and the operator's measurement posture and skill.

In addition, the measurement work takes a lot of people and time, delaying the length and straightness measurement and inspection process, as well as labor costs, resulting in a price increase.

Such a manual measurement method is an error occurs according to the measurement position and the measurement posture of the operator, there is a problem that the productivity is reduced due to excessive time generation by the measurement by the manpower.

The present invention has been made in order to solve the above problems, measuring the length and straightness of large pipes that can increase the accuracy of the measurement data and shorten the measurement and inspection process by automating the length and straightness measurement process of large pipes The purpose is to provide a device.

In order to achieve the above object, the present invention, a plurality of feeders having a feed roller for supporting the large pipe to be movable in the longitudinal direction, provided between the feeder to support the large pipe, the circumferential direction And a pair of rotary rollers rotating at the upper and lower portions of the rotary roller and a lifter configured to vertically move the rotary roller, and installed at a lower portion of the upper frame coupled with a lower frame provided in parallel with the conveyor. And a first measuring device configured to measure the length of the large pipe, and a second measuring device provided at one end of the bracket coupled to the upper frame to enable measuring the straightness of the large pipe. .

The first measuring device may include a servo motor for horizontally moving the upper frame and a gear interlocked with the servo motor to measure the length of the large pipe.

As described above, the second measuring device includes a scale cylinder operated by pneumatic pressure, a measuring roll provided at a lower end of the scale cylinder, and a sensor provided at a predetermined interval from the measuring roll, so that The straightness can be measured.

The upper frame is provided on one side of the lower frame and is horizontally movable by a rack gear engaged with the gear.

As such, the bracket is coupled to the geared motor installed on top of the upper frame, the ball screw interlocked with the geared motor, the ball screw and the vertical movement by the nut coupled to the bracket, the vertical movement It is characterized in that it becomes possible.

Finally, it characterized in that it further comprises a controller installed on the other side of the lower frame.

As described above, according to the present invention, the following effects can be expected.

By using a measuring device that automatically and accurately provides the length and straightness measurement data of a large pipe, quality control can be effectively performed, and furthermore, there is an advantage that customers can be confident in the quality of the product.

In addition, it is possible to shorten the measurement process to shorten the overall product delivery time, there is an advantage in terms of economic efficiency is improved product productivity.

1 is a plan view showing a length and straightness measuring apparatus of a large pipe according to the present invention.
FIG. 2 is a diagram illustrating AA illustrated in FIG. 1.
3 is a view illustrating the BB shown in FIG. 1.
4 is an enlarged view of a portion D shown in FIG. 2.
FIG. 5 is a diagram illustrating a CC illustrated in FIG. 1.
FIG. 6 is an enlarged view of E illustrated in FIG. 2.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view showing a length and straightness measuring device of a large pipe according to the present invention, Figure 2 is a cross-sectional view showing AA shown in Figure 1, Figure 3 is a cross-sectional view showing a BB shown in Figure 1, Figure 4 is an enlarged view of D shown in FIG. 2, FIG. 5 is a cross-sectional view illustrating CC shown in FIG. 1, and FIG. 6 is an enlarged view of E shown in FIG. 2.

First, the coupling relationship between the components of the present invention will be described in detail, and then the operation of measuring the length and straightness of the large pipe will be described.

Referring to the drawings, the length and straightness measuring device of the large pipe according to the present invention is largely installed in the lower frame of the upper frame 400 is coupled to the conveyor 100, the rotor 200, the lower frame 300 It consists of a first measuring device 410, and a second measuring device 600 provided at one end of the bracket 500 is coupled to the upper frame 400.

First, as shown in Figure 2, the feeder 100 is provided with a feed roller 110 for supporting the large pipe (P) to move in the longitudinal direction, the feed roller 110 is a shaft ( 130 is coupled through, and the transfer motor 150 is provided at the end of the shaft 130 to rotate the feed roller 110.

Here, the feed roller 110 is installed in plurality in parallel with the shaft 130, by increasing the outer diameter toward both sides from the center of the shaft 130 to correspond to the shape of the large pipe (P), The large pipe (P) can be transported stably.

And, as shown in Figure 3, the rotor 200 is composed of a rotary motor 250 and the lifting unit 230 for driving the rotary roller 210, the rotary roller 210 is provided in a pair And, to support the large pipe (P) to rotate in the circumferential direction.

Such, the lifting unit 230 is provided in the lower portion of the rotary roller 210, by allowing the rotary roller 210 to move vertically, the rotary roller 210 is in close contact with the large pipe (P) lower rotation You can do it.

Here, the lifting unit 230 is operated by a hydraulic cylinder, when the large pipe (P) is transferred by the conveyor 100, the rotary roller 210 is lowered by the lifting unit 230 It is possible not to interfere with the conveying direction of the large pipe (P).

On the other hand, when rotating the large pipe (P) in the circumferential direction, by raising the rotary roller 210 higher than the conveyor 100 by the lifting unit 230, it does not interfere with the conveyor (100) It is possible to rotate the large pipe (P).

Subsequently, as shown in FIGS. 1 to 4, the first measuring unit 410 is installed below the upper frame 400 coupled with the lower frame 300 provided in parallel with the conveyor 100. In addition to enabling the measurement of the length of the large pipe (P) it provides a driving force for horizontally moving the upper frame (400).

The lower frame 300 is provided in parallel with the longitudinal direction of the large pipe (P) supported by the conveyor 100, spaced apart from the conveyor 100 and the rotor 200 by a predetermined interval large pipe (P ) Is arranged so as not to interfere with the feeding and rotating.

Here, a rack gear 310 is provided at one side of the lower frame 300 and is engaged with the gear 413 of the first measuring unit 410 to be described later.

The upper frame 400 is horizontally coupled to the lower frame 300 by a horizontal LM guide 800, the first measuring device 410 is installed at the bottom.

The first measuring device 410 includes a servo motor 411 and a gear 413, and the servo motor 411 is installed below the upper frame 400 and horizontally covers the upper frame 400. It provides a driving force to move.

As such, the gear 413 is interlocked with the servo motor 411, and as described above, the gear 413 and the rack gear 310 are meshed with each other, and the upper frame is driven by the driving force of the servo motor 411. 400 is capable of horizontal movement along the horizontal LM guide (800).

1 and 5, the upper frame 400 includes a geared motor 430, a ball screw 450, and a nut 470, and the geared motor 430. Is installed on top of the upper frame 400 is to provide a driving force for vertical movement of the bracket (500).

The ball screw 450 is interlocked with the geared motor 430, the nut 470 is coupled to the ball screw 450 to move vertically, the ball screw 450 and the nut 470 is a ball screw (ball screw) is operated by the principle, the nut 470 is coupled to the bracket 500 to be described later.

As such, the bracket 500 and the upper frame 400 are vertically coupled by the vertical LM guide 900.

As described above, when the geared motor 430 is driven, the ball screw 450 is interlocked and rotated, and the bracket 500 coupled with the nut 470 can be vertically moved along the vertical LM guide 900. Will be done.

Next, as shown in FIGS. 1 to 6, the second measuring device 600 is installed at one end of the bracket 500, the scale cylinder 610, the measuring roll 630, and the sensor 650. It is configured to include, to measure the straightness of the large pipe (P).

The scale cylinder 610 is operated by a pneumatic cylinder rod (not shown) to enable the up and down linear reciprocating movement, it is located in the center of the second measuring unit 600.

In addition, the measuring roll 630 is provided at the lower end of the cylinder rod of the scale cylinder 610 to measure the straightness of the large pipe (P).

As such, the scale cylinder 610 may measure the fine vertical movement of the measuring roll 630 by setting the position in contact with the top of the pipe as the origin.

The sensor 650 is provided spaced apart from the measuring roll 630 by a predetermined interval, and detects the rear end at the front end of the large pipe (P).

As such, by installing the controller 700 on the other side of the lower frame 300, the conveyor 100, the rotor 200, the lower frame 300, the upper frame 400, the bracket 500, and Remote control of the operation of the second measuring unit 600.

In addition, by receiving a signal sensed by the sensor 650 to control the operation of the first measuring unit 410 and the second measuring unit 600, the actual rotation speed and the scale cylinder 610 of the servo motor 411 Data about the vertical movement of each section and time is collected and displayed on a monitor (not shown).

Hereinafter, the operation of the length and straightness measuring device of the large pipe according to the present invention will be described in detail.

Here, a description will be made on the assumption that the separation distance between the center of the measuring roll 630 of the second measuring device 600 and the center of the sensor 650 is 150 mm.

The large pipe (P) is entered into the feeder 100 is transported within the horizontal movement range of the upper frame 400 by the rotation of the feed roller (110).

Then, the sensor 650 of the second measuring device 600 is operated to detect the front end of the large pipe (P), the geared motor 430 of the upper frame 400 is driven while the ball screw is linked to this As the 450 is rotated, the bracket 500 coupled with the nut 470 descends along the vertical LM guide 900 while being positioned closer upward than the diameter of the pipe.

The gear 413 and the rack gear 310 interlocked with the servo motor 411 installed on the lower part of the upper frame 400 are engaged to move toward the front end of the large pipe P along the horizontal LM guide 800. do.

When the sensor 650 detects the front end of the large pipe P, the upper frame 400 is stopped, and at the same time, the rotation speed of the servomotor 411 is initialized to measure the length of the large pipe P. do.

Then, when the upper frame 400 is moved 150 mm behind the large pipe (P), the measuring roll 630 coupled with the cylinder rod of the scale cylinder 610 is lowered to the upper end of the large pipe (P) At the same time, the scale cylinder 610 is reset to initialize the position of the measuring roll 630 to the origin.

Then, the upper frame 400 is moved by the servo motor 411 until the sensor 650 detects the rear end of the large pipe P, and the measuring roll 630 is the large pipe P. In close contact with the top of the roll), the scale cylinder 610 measures the fine vertical movement of the measuring roll 630, that is, the straightness is measured and transmitted to the controller 700.

In this way, the moment the sensor 650 exits the rear end of the large pipe (P) while measuring the straightness, the sensor 650 is "OFF", the upper frame 400 is measured by the servo motor 411 The distance between the roll 630 and the sensor 650 is further increased by 150 mm, so that the straightness of the measuring roll 630 and the scale cylinder 610 can be completed.

Here, the large pipe by using the rotational speed of the servo motor 411 and the diameter of the gear 413 during the time when the sensor 650 detects the rear end from the time when the front end of the large pipe (P) is detected and "OFF" It is possible to measure the length of (P).

In addition, the straightness of the large pipe (P) by using the data measured by the scale cylinder 610 to detect and record the fine vertical movement of the measuring roll 630 to be in close contact with the top of the large pipe (P). You can measure.

As such, when the measurement of the length and straightness of the large pipe P is completed, the bracket 500 is raised along the vertical LM guide 900, and the upper frame 400 is in the original position along the horizontal LM guide 800. Return to

Then, the rotary roller 210 is raised by the lifting unit 230 and the large pipe (P) is rotated by an angle by the rotary motor 250, for example, the rotary roller 210 90 ° If it rotates at intervals, the length and straightness measurement of the large pipe (P) is repeated a total of four times when the large pipe (P) is rotated 360 ° completes the length and straightness measurement.

Here, in the case where a more accurate length and straightness are required according to the type and application position of the large pipe P, the length and straightness of the large pipe P are densified by densifying the rotation angle of the rotary roller 210. You can measure.

As described above, by automating the process of measuring the length and straightness of large pipes to increase the accuracy of the measurement data and shorten the measurement and inspection process, it provides a length and straightness measuring device for large pipes that can improve quality control and productivity. It can be seen that the basic idea, and many other variations are possible to those of ordinary skill in the art.

100: feeder 200: rotating machine
300: lower frame 400: upper frame
410: first measuring instrument 500: bracket
600: second measuring instrument

Claims (6)

A plurality of feeders (100) having a feed roller (110) for supporting a large pipe (P) to be movable in the longitudinal direction;
A pair of rotary rollers 210 are provided between the conveyor 100 to support the large pipe P and rotate in the circumferential direction, and are provided below the rotary roller 210 and rotate the rollers. Rotor 200 consisting of a lifting unit 230 for enabling vertical movement 210; And,
A first measuring unit 410 installed below the upper frame 400 coupled to the lower frame 300 provided in parallel with the conveyor 100 to allow the length of the large pipe P to be measured; and ,
The second measuring unit 600 is provided at one end of the bracket 500 coupled to the upper frame 400 to enable the straightness measurement of the large pipe P. And straightness measuring device. The method of claim 1,
The first measuring unit 410,
Servo motor 411 for horizontally moving the upper frame 400,
Consists of a gear 413 interlocked with the servo motor 411,
Length and straightness measuring device of the large pipe, characterized in that the measurement of the length of the large pipe (P). The method of claim 1,
The second measuring device 600,
A scale cylinder 610 operated by pneumatic pressure,
A measuring roll 630 provided at a lower end of the scale cylinder 610;
Consists of the sensor 650 is provided spaced apart from the measuring roll 630 by a predetermined interval,
Length and straightness measuring apparatus of the large pipe, characterized in that for measuring the straightness of the large pipe (P). 3. The method of claim 2,
The upper frame 400,
Is provided on one side of the lower frame 300, the length and straightness measuring apparatus of a large pipe, characterized in that the horizontal movement is possible by the rack gear 310 engaged with the gear (413). The method of claim 1,
The bracket 500 is,
Geared motor 430 is installed on the upper portion of the upper frame 400,
A ball screw 450 interlocked with the geared motor 430,
The ball screw 450 is coupled to the vertical movement, the length and straightness measuring apparatus of the large pipe, characterized in that the vertical movement is possible by the nut (470) coupled to the bracket (500). The method of claim 1,
Length and straightness measuring device of the large pipe, characterized in that it further comprises a controller 700 is installed on the other side of the lower frame (300).
KR1020120073888A 2012-07-06 2012-07-06 Large pipe length and straightness measuring device KR20140006572A (en)

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KR1020120073888A KR20140006572A (en) 2012-07-06 2012-07-06 Large pipe length and straightness measuring device

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Application Number Priority Date Filing Date Title
KR1020120073888A KR20140006572A (en) 2012-07-06 2012-07-06 Large pipe length and straightness measuring device

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KR20140006572A true KR20140006572A (en) 2014-01-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108571944A (en) * 2018-05-16 2018-09-25 中铁十局集团建筑安装工程有限公司 A kind of degree of plainness for wall surface measuring device
CN110627000A (en) * 2019-09-28 2019-12-31 厦门恰乐文具有限公司 Mural painting that possesses rule function is drawn and is used scaffold frame
KR102068160B1 (en) * 2019-06-13 2020-01-20 박세준 Copper tube cutting machine for quality inspection
KR20220066628A (en) 2020-11-16 2022-05-24 (주)우성기계공업 Pipe length measuring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108571944A (en) * 2018-05-16 2018-09-25 中铁十局集团建筑安装工程有限公司 A kind of degree of plainness for wall surface measuring device
KR102068160B1 (en) * 2019-06-13 2020-01-20 박세준 Copper tube cutting machine for quality inspection
CN110627000A (en) * 2019-09-28 2019-12-31 厦门恰乐文具有限公司 Mural painting that possesses rule function is drawn and is used scaffold frame
CN110627000B (en) * 2019-09-28 2020-12-01 永康普物电子科技有限公司 Mural painting that possesses rule function is drawn and is used scaffold frame
KR20220066628A (en) 2020-11-16 2022-05-24 (주)우성기계공업 Pipe length measuring device

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