A pipe sizing device

Abstract

The utility model provides a pipeline size measuring device relates to pipeline measurement technical field, the device includes measurement structure, stop device, support, industrial personal computer screen, pusher and rotary drive arrangement, measurement structure includes distance sensor, support rod, connecting rod, distance sensor is connected on support rod through connecting rod, stop device is located between connecting rod, be provided with support block on the support, be equipped with the bearing groove for bearing measurement pipeline on the support block, be provided with gyro wheel in the bearing groove, industrial personal computer screen is connected with distance sensor, pusher is used for with measurement pipeline outer surface contact and drives measurement pipeline axial movement to realize the measurement of pipeline axial multiple, rotary drive arrangement is used for driving measurement pipeline or support rod rotation, realizes the circumferential measurement of pipeline. The utility model discloses can automatic measurement pipeline outer diameter and wall thickness simultaneously, and the accuracy is high, convenient and fast.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline measurement, and more specifically, to a pipeline size measuring device. Background Technology

[0002] Plastic pipes are widely used in production and daily life. Two key dimensions of plastic pipes are their outer diameter and wall thickness. However, the automation level of dimensional measurement in the production process of plastic pipes is low. It still relies on manual measurement using tools such as calipers, thickness gauges, micrometers, and pi rulers to measure dimensions such as the outer diameter and wall thickness. This method is inefficient, allowing only batch sampling and cannot measure every single pipe. Furthermore, it suffers from drawbacks such as large measurement errors from different operators and the inability to automatically record measurement data. Currently, ultrasonic measurement is widely used in the field of automatic pipe dimensional measurement. However, ultrasonic measurement requires a coupling agent, limiting its use in certain environments and conditions, and the equipment is expensive, hindering its widespread application. Other penetrating measurement devices, such as terahertz and millimeter-wave methods, are also expensive and pose radiation hazards, limiting their widespread use as well. Patent CN202320220107.1 discloses a PP pipe size measuring device that continuously measures the PP pipe wall thickness by measuring the distance between the upper and lower rollers. However, this method cannot measure the pipe's outer diameter. Furthermore, the method relies on springs to press the upper and lower rollers together, which can distort the measurement results when the measuring device vibrates. Prolonged, high-frequency use can also cause wear on the contact rollers, resulting in a short lifespan. Patent CN202121055317.7 discloses a pipe size measuring device that uses a laser line scanning module to collect the pipe's outer diameter and wall thickness data. However, since pipes are produced through continuous extrusion and cut to a fixed length, the cutting process can cause burrs or curled edges at the ends, leading to errors in the measurement of the pipe's outer diameter and wall thickness. Therefore, targeted improvements and optimizations are needed to address these challenges, further enhance convenience and accuracy, and better meet the evolving needs of the pipeline engineering field. Utility Model Content

[0003] To overcome the shortcomings of low measurement efficiency and potential distortion of measurement results in the existing technology, this utility model proposes a pipe size measuring device that can automatically and simultaneously measure and record the outer diameter and wall thickness of the pipe, with high measurement accuracy and convenient and fast measurement process.

[0004] To achieve the above-mentioned technical effects, the technical solution of this utility model is as follows: A pipe size measuring device includes: a measuring structure, the measuring structure including a first distance sensor, a second distance sensor, a third distance sensor, a support rod, a first connecting rod, a second connecting rod, and a third connecting rod. The first distance sensor is connected to the support rod via the first connecting rod, the second distance sensor is connected to the support rod via the second connecting rod, and the third distance sensor is connected to the support rod via the third connecting rod. The first distance sensor, the second distance sensor, and the third distance sensor are located on the same straight line and are spaced apart. The straight line containing the first distance sensor, the second distance sensor, and the third distance sensor is perpendicular to the axis of the pipe being measured.

[0005] Preferably, the first connecting rod, the second connecting rod, and the third connecting rod are arranged in parallel at intervals.

[0006] Preferably, the first connecting rod, the second connecting rod, and the third connecting rod are movably connected to the support rod.

[0007] Preferably, a limiting device is included, which is located between the second connecting rod and the third connecting rod. The limiting device is used to restrict the axial movement of the measuring pipe and is closer to the support rod relative to the second distance sensor.

[0008] Preferably, the device includes a bracket, on which a support block is provided, and the support block is provided with a support groove for supporting the measuring pipe.

[0009] Preferably, a roller is provided inside the bearing groove, and the roller is installed inside the openings on both sides of the bearing groove.

[0010] In this technical solution, when the measuring pipe rotates around its axis, the rollers use rolling friction instead of sliding friction, which can reduce the wear on the measuring pipe caused by friction.

[0011] Preferably, the system includes an industrial control panel, and the first distance sensor, the second distance sensor, and the third distance sensor are communicatively connected to the industrial control panel.

[0012] Preferably, it further includes a pushing device, which is used to contact the outer surface of the measuring pipe and drive the measuring pipe to move axially. The pushing device and the support rod are located on both sides of the straight line where the first distance sensor, the second distance sensor and the third distance sensor are located.

[0013] In this technical solution, the pushing device moves the measuring pipe axially closer to the first distance sensor, the second distance sensor, and the third sensor, thereby enabling measurement of multiple points along the axial direction of the measuring pipe.

[0014] Preferably, it further includes a first rotary drive device, which is used to contact the outer surface of the measuring pipe. The first rotary drive device drives the measuring pipe to rotate in a circumferential direction. The first rotary drive device and the support rod are located on both sides of the straight line where the first distance sensor, the second distance sensor and the third distance sensor are located.

[0015] In this technical solution, when the first rotary drive device drives the measuring pipe to rotate 360° in the circumferential direction while the support rod remains stationary, the distance sensor can simultaneously measure the outer diameter and wall thickness of the pipe.

[0016] Preferably, it further includes a second rotary drive device, which is connected to the support rod and is used to drive the support rod to rotate.

[0017] In this technical solution, when the second rotary drive device drives the support rod to rotate 360° in the circumferential direction and the measuring pipe remains stationary, the distance sensor can simultaneously measure the outer diameter and wall thickness of the pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model's technical solution are: This invention proposes a pipe size measuring device that uses distance sensors for non-contact measurement of the pipe. A first, second, and third distance sensor are spaced apart on a straight line perpendicular to the axis of the pipe. Before measurement, the distances L1 between the first and second distance sensors, L2 between the second and third distance sensors, and L3 between the first and second distance sensors are obtained using these sensors. During measurement, a second connecting rod connected to the second distance sensor extends into the pipe. The first and third distance sensors are located outside the pipe. The distance S1 between the first distance sensor and the outer wall of the pipe is measured using the first distance sensor, and the distance S2 between the third distance sensor and the outer wall of the pipe is measured using the third distance sensor. The distances S3 and S4 between the second distance sensor and the inner wall of the pipe are measured using the second distance sensor. Thus, the wall thicknesses L1-S1-S3 and L2-S2-S4, and the outer diameter L3-S1-S2 of the pipe can be obtained, thereby achieving the measurement of the pipe's outer diameter and wall thickness. In addition, this invention also includes a pushing device to move the measuring pipe axially closer to the first distance sensor, the second distance sensor, and the third sensor, thereby enabling measurement at multiple points along the axial direction of the measuring pipe. This invention also includes a first rotary drive device or a second rotary drive device, which drives the measuring pipe to rotate via the first rotary drive device or drives the support rod connected to the distance sensor to rotate via the second rotary drive device, thereby enabling circumferential measurement of the measuring pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the structure of the measuring structure proposed in the embodiments of this utility model; Figure 2 This is a schematic diagram showing the positional relationship between the distance sensor and the measuring pipe proposed in this embodiment of the present invention; Figure 3 This is a schematic diagram of the pipe size measuring device proposed in Embodiment 2 of this utility model; Figure 4 This shows a cross-sectional view of the V-groove proposed in the embodiments of this utility model; Figure 5 This is a schematic diagram of the pipe size measuring device proposed in Embodiment 3 of this utility model; Figure 6 This shows a cross-sectional view of the U-shaped groove proposed in the embodiments of this utility model; The reference numerals in the attached figures are explained as follows: 1. First distance sensor; 2. Second distance sensor; 3. Third distance sensor; 4. Support rod; 5. First connecting rod; 6. Second connecting rod; 7. Third connecting rod; 8. Support block; 9. Bracket; 10. Second rotary drive device; 11. Industrial control panel; 12. Pushing device; 13. First rotary drive device; 14. Limiting device; 15. Bearing groove; 16. Roller; 17. Measuring pipe. Detailed Implementation

[0020] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions; It is understandable to those skilled in the art that some well-known details may be omitted from the accompanying drawings.

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] The positional relationships depicted in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Example 1 This embodiment proposes a pipe size measuring device, including a measuring structure, see [link to documentation]. Figure 1 and Figure 2The measuring structure includes a first distance sensor 1, a second distance sensor 2, a third distance sensor 3, a support rod 4, a first connecting rod 5, a second connecting rod 6, and a third connecting rod 7. The first distance sensor 1 is connected to the support rod 4 via the first connecting rod 5, the second distance sensor 2 is connected to the support rod 4 via the second connecting rod 6, and the third distance sensor 3 is connected to the support rod 4 via the third connecting rod 7. The first distance sensor 1, the second distance sensor 2, and the third distance sensor 3 are located on the same straight line and are spaced apart. The straight line containing the first distance sensor 1, the second distance sensor 2, and the third distance sensor 3 is perpendicular to the axis of the measuring pipe 17.

[0023] In this embodiment, the first distance sensor 1, the second distance sensor 2, and the third distance sensor 3 are spaced apart on a straight line perpendicular to the axis of the measuring pipe 17. Before measurement, the distances L1 between the first distance sensor 1 and the second distance sensor 2, L2 between the second distance sensor 2 and the third distance sensor 3, and L3 between the first distance sensor 1 and the second distance sensor 2 are obtained through the first distance sensor 1, the second distance sensor 2, and the third distance sensor 3. During measurement, the second connecting rod 6 connecting the second distance sensor 2 extends into the measuring pipe 17, and the first distance sensor 1... The third distance sensor 3 is located outside the measuring pipe 17. The distance S1 between the first distance sensor 1 and the outer wall of the measuring pipe 17 is measured by the first distance sensor 1. The distance S2 between the third distance sensor 3 and the outer wall of the measuring pipe 17 is measured by the third distance sensor 3. The distances S3 and S4 between the second distance sensor 2 and the inner wall of the measuring pipe 17 are measured by the second distance sensor 2. Thus, the wall thickness L1-S1-S3 and L2-S2-S4 of the measuring pipe 17, as well as the outer diameter L3-S1-S2 of the measuring pipe 17, can be obtained, thereby realizing the measurement of the outer diameter and wall thickness of the measuring pipe 17.

[0024] In some preferred embodiments, the first connecting rod 5, the second connecting rod 6, and the third connecting rod 7 are arranged in parallel at intervals.

[0025] In this embodiment, the interval between the first connecting rod 5, the second connecting rod 6, and the third connecting rod 7 is not fixed and can be set according to actual needs. The connecting rods ensure that the distance sensor is positioned on a straight line perpendicular to the axis of the measuring pipe 17.

[0026] In some preferred embodiments, the first connecting rod 5, the second connecting rod 6, and the third connecting rod 7 are movably connected to the support rod 4.

[0027] In this embodiment, the first connecting rod 5, the second connecting rod 6, and the third connecting rod 7 can slide flexibly along the axial direction of the support rod 4. Each connecting rod is equipped with an adjustment device and a locking mechanism at its end, supporting a wide adjustment range and ensuring positional stability to accommodate pipes of different diameters. All connecting rods and support rods are made of high-strength alloy materials, and their rigidity meets the requirements of the device.

[0028] In some preferred embodiments, a limiting device 14 is included, which is located between the second connecting rod 6 and the third connecting rod 7. The limiting device 14 is used to restrict the axial movement of the measuring pipe 17 and is closer to the support rod 4 relative to the second distance sensor 2.

[0029] In this embodiment, the limiting device 14 is a baffle-type limiting device, which consists of a baffle and a bottom base. The baffle is positioned between the second connecting rod 6 and the third connecting rod 7, maintaining a certain distance from the two connecting rods. The limiting device 14 is mainly used to prevent axial overshoot and ensure that the measuring pipe 17 stops precisely at the predetermined position. As a physical barrier, the limiting device 14 directly restricts the axial movement range of the measuring pipe 17, avoiding collisions with surrounding equipment. Furthermore, the baffle-type structure has no complex transmission components, resulting in a low failure rate and easy maintenance.

[0030] In some preferred embodiments, the bracket 9 is provided with a support block 8, and the support block 8 is provided with a support groove 15 for supporting the measuring pipe 17.

[0031] In this embodiment, the bearing groove 15, through its geometric design, guides the measuring pipe 17 to the central position, reducing the need for manual adjustment and ensuring its axial and radial stability during measurement, thus avoiding measurement errors caused by offset. The support block 8 is made of high-strength material and undergoes surface hardening treatment to extend its service life.

[0032] In some preferred embodiments, the measuring device further includes an industrial control panel 11, and the first distance sensor 1, the second distance sensor 2, and the third distance sensor are communicatively connected to the industrial control panel 11.

[0033] In this embodiment, the industrial control panel 11 is responsible for information transmission and processing. Its function is to input and record the distance L1 between the first distance sensor 1 and the second distance sensor 2, and the distance L2 between the second distance sensor 2 and the third distance sensor 3. Simultaneously, it uploads the distance sensor readings to the server in real time. The server calculates the outer diameter and wall thickness of the measured pipe 17 and displays the measurement results on the industrial control panel 11. The integrated processing of the industrial control panel 11 reduces manual calculations and improves efficiency; the data recording function facilitates quality traceability and process optimization.

[0034] In some preferred embodiments, a pushing device 12 is also included. The pushing device 12 is used to contact the outer surface of the measuring pipe 17 and drive the measuring pipe 17 to move axially. The pushing device 12 and the support rod 4 are located on both sides of the straight line where the first distance sensor 1, the second distance sensor 2 and the third distance sensor 3 are located.

[0035] In this embodiment, the pushing device 12 consists of a cylinder, a telescopic rod, a motor, a gear system, and a soft rubber track. The movement direction of the soft rubber track is the same as the axial movement direction of the measuring pipe 17. The cylinder provides power to drive the telescopic rod to adjust the height of the soft rubber track. When the soft rubber track contacts the measuring pipe 17, the telescopic rod stops moving. The motor drives the gear system to rotate, and the gear system drives the soft rubber track to move. The friction force generated between the soft rubber track and the measuring pipe 17 causes the measuring pipe 17 to move axially. When the measuring pipe 17 touches the limiting device 14, the measuring pipe 17 cannot continue to move towards the baffle position. Therefore, the current of the pushing device 12 increases and it automatically disconnects, stopping the pushing of the measuring pipe 17.

[0036] Example 2 This embodiment proposes a pipe size measuring device, see [link / reference] Figure 3 It includes a first rotary drive device 13, which is used to contact the outer surface of the measuring pipe 17. The first rotary drive device 13 drives the measuring pipe 17 to rotate in the circumferential direction. The first rotary drive device 13 and the support rod 4 are located on both sides of the straight line where the first distance sensor 1, the second distance sensor 2 and the third distance sensor 3 are located.

[0037] In this embodiment, the first rotary drive device 13 consists of a cylinder, a telescopic rod, a motor, a gear system, and a soft rubber track. The movement direction of the soft rubber track is perpendicular to the axial direction of the measuring pipe. The cylinder provides power to drive the telescopic rod to adjust the height of the soft rubber track. When the soft rubber track contacts the measuring pipe 17, the telescopic rod stops moving. The motor drives the gear system to rotate, and the gear system drives the soft rubber track to move. The friction force generated between the soft rubber track and the measuring pipe 17 drives the measuring pipe 17 to complete the axial rotation action.

[0038] In some preferred embodiments, see Figure 4 A roller 16 is provided inside the bearing groove 15, and the roller 16 is installed inside the openings on both sides of the bearing groove 15.

[0039] In this embodiment, the bearing groove 15 with rollers 16 is a V-shaped groove with a symmetrical V-shaped cross-section. The rollers 16 are installed on the inner sides of both ends of the V-shaped groove. When the measuring pipe 17 rotates around its axis, the rollers 16 use rolling friction instead of sliding friction, which can reduce the wear on the measuring pipe 17 caused by friction.

[0040] When the device is in operation, it first measures the distance L1 between the first distance sensor 1 and the second distance sensor 2, and the distance L2 between the second distance sensor 2 and the third distance sensor 3, and inputs the distances into the industrial control screen 11. Then, the measuring pipe 17 is placed on the V-groove, and the pushing device 12 drives the measuring pipe 17 to move, so that the distance sensor can penetrate into the measuring pipe 17. After the measuring pipe 17 touches the limit device 14, the pushing device 12 stops driving, and the first rotation driving device 13 drives the measuring pipe 17 to rotate 360° in the circumferential direction. After the measurement of the entire circumferential outer diameter and wall thickness is completed, the pushing device 12 drives the measuring pipe 17 to move, so that the distance sensor can move out of the measuring pipe 17. The measurement of the dimensions of the measuring pipe 17 is completed.

[0041] Example 3 This embodiment proposes a pipe size measuring device, see [link / reference] Figure 5 It includes a second rotary drive device 10, which is connected to the support rod 4 and is used to drive the support rod 4 to rotate.

[0042] In this embodiment, the second rotation drive device 10 is a motor rotation drive device. The motor drives the support rod 4 to rotate 360° through the transmission mechanism, so that the distance sensor can complete the circumferential scanning of the measuring pipe 17.

[0043] In some preferred embodiments, the bracket 9 is provided with a support block 8, and the support block 8 is provided with a support groove 15 for supporting the measuring pipe 17.

[0044] In this embodiment, see Figure 6 The bearing groove 15 is a U-shaped groove with a semi-circular U-shaped cross-section. The semi-circular structure guides the measuring pipe 17 into the center position, reducing offset. The groove fits the surface of the measuring pipe 17, reducing sliding and vibration, and ensuring the stability of the measuring pipe 17 during measurement.

[0045] When the device is in operation, it first measures the distance L1 between the first distance sensor 1 and the second distance sensor 2, and the distance L2 between the second distance sensor 2 and the third distance sensor 3, and inputs the data into the industrial control screen 11. Then, the measuring pipe 17 is placed on the U-shaped groove, and the pushing device 12 drives the measuring pipe 17 to move so that the distance sensor can penetrate into the measuring pipe 17. After the measuring pipe 17 touches the limit device 14, the pushing device 12 stops driving. The second rotation driving device 10 drives the support rod 4 to rotate 360°. After the measurement of the entire circumference outer diameter and wall thickness is completed, the pushing device 12 drives the measuring pipe 17 to move so that the distance sensor can move out of the measuring pipe 17. The measurement of the dimensions of the measuring pipe 17 is then completed.

[0046] The embodiments described herein are merely examples to clearly illustrate the present invention and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pipe size measuring device, characterized in that, include: The measuring structure includes a first distance sensor (1), a second distance sensor (2), a third distance sensor (3), a support rod (4), a first connecting rod (5), a second connecting rod (6), and a third connecting rod (7). The first distance sensor (1) is connected to the support rod (4) via the first connecting rod (5), the second distance sensor (2) is connected to the support rod (4) via the second connecting rod (6), and the third distance sensor (3) is connected to the support rod (4) via the third connecting rod (7). The first distance sensor (1), the second distance sensor (2), and the third distance sensor (3) are located on the same straight line and are spaced apart. The straight line containing the first distance sensor (1), the second distance sensor (2), and the third distance sensor (3) is perpendicular to the axis of the measuring pipe.

2. The pipe size measuring device according to claim 1, characterized in that, The first connecting rod (5), the second connecting rod (6), and the third connecting rod (7) are arranged in parallel at intervals.

3. The pipe size measuring device according to claim 2, characterized in that, The first connecting rod (5), the second connecting rod (6), and the third connecting rod (7) are movably connected to the support rod (4).

4. The pipe size measuring device according to claim 2, characterized in that, Includes a limiting device (14) located between the second connecting rod (6) and the third connecting rod (7), the limiting device (14) is used to limit the axial movement of the measuring pipe, and the limiting device (14) is closer to the support rod (4) than the second distance sensor (2).

5. A pipe size measuring device according to claim 1, characterized in that, Includes a bracket (9), on which a support block (8) is provided, and the support block (8) is provided with a support groove (15) for supporting the measuring pipe.

6. A pipe size measuring device according to claim 5, characterized in that, The bearing groove is provided with rollers (16), which are installed inside the openings on both sides of the bearing groove (15).

7. The pipe size measuring device according to claim 1, characterized in that, It includes an industrial control screen (11), and the first distance sensor (1), the second distance sensor (2), and the third distance sensor are communicatively connected to the industrial control screen (11).

8. A pipe size measuring device according to claim 1, characterized in that, It also includes a pushing device (12), which is used to contact the outer surface of the measuring pipe and drive the measuring pipe to move axially. The pushing device (12) and the support rod (4) are located on both sides of the straight line where the first distance sensor (1), the second distance sensor (2) and the third distance sensor (3) are located.

9. A pipe size measuring device according to any one of claims 1-8, characterized in that, It also includes a first rotary drive device (13), which is used to contact the outer surface of the measuring pipe. The first rotary drive device (13) drives the measuring pipe to rotate in the circumferential direction. The first rotary drive device (13) and the support rod (4) are located on both sides of the straight line where the first distance sensor (1), the second distance sensor (2) and the third distance sensor (3) are located.

10. A pipe size measuring device according to any one of claims 1-8, characterized in that, It also includes a second rotary drive device (10), which is connected to the support rod (4) and is used to drive the support rod (4) to rotate.

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