ribbed pipe inner diameter measuring device

Abstract

This utility model discloses a device for measuring the inner diameter of ribbed pipes. The measuring device includes a base and an optical platform mounted on the base. A driving assembly, a calibration assembly, and a clamping assembly are sequentially arranged along the pipe's axial direction on the optical platform. The driving assembly is slidably mounted on the optical platform along the pipe's axial direction. A measuring rod coaxially arranged with the pipe is fixedly connected to the driving assembly. The other end of the measuring rod is slidably mounted on the calibration assembly. The pipe is placed on the clamping assembly. A pneumatic measuring probe is located at the end of the measuring rod near the pipe. The outer diameters of both the measuring rod and the pneumatic measuring probe are smaller than the inner diameter of the pipe. When the driving assembly operates, the measuring rod drives the pneumatic measuring probe to measure the inner diameter of the pipe. This utility model, by using a driving assembly to drive the pneumatic measuring probe at the end of the measuring rod to measure the inner diameter of the pipe, can achieve the measurement of the inner diameter of the entire pipe, improving both measurement accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe measurement technology, and in particular to a device for measuring the inner diameter of ribbed pipes. Background Technology

[0002] In existing technologies, pipe measurements often only include the length and the inner and outer diameters at both ends. For longer pipes, deformation is more likely to occur in the middle, potentially altering the inner diameter. Manual measurement can only measure the inner diameter at both ends. For applications requiring high pipe precision, the inner diameter must be within a certain error range. Manual measurement is not only inefficient and cannot avoid deformation caused by handling, but also suffers from low accuracy due to human error. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a ribbed pipe inner diameter measuring device that can measure the inner diameter of the entire pipe in all positions and is convenient to use.

[0004] This utility model discloses a ribbed pipe inner diameter measuring device, comprising: a base and an optical platform disposed on the base. A driving assembly, a calibration assembly, and a clamping assembly are sequentially disposed on the optical platform along the pipe axial direction. The driving assembly is slidably disposed on the optical platform along the pipe axial direction. A measuring rod coaxially disposed with the pipe is fixedly connected to the driving assembly. The other end of the measuring rod is slidably disposed on the calibration assembly. The pipe is disposed on the clamping assembly. A pneumatic measuring probe is disposed at the end of the measuring rod near the pipe. The outer diameters of both the measuring rod and the pneumatic measuring probe are smaller than the inner diameter of the pipe. When the driving assembly operates, the measuring rod drives the pneumatic measuring probe to measure the inner diameter of the pipe.

[0005] In one or more embodiments of this utility model, the optical platform is provided with a pad along the axial direction on the side away from the tube, the pad is provided with a first slide rail, the first slide rail is provided with a first slider, and the driving component is mounted on the first slider.

[0006] In one or more embodiments of this utility model, the driving assembly includes a motor mounting plate mounted on a first slider, a motor and a fixing block mounted on the motor mounting plate, a gear mounted on the output end of the motor, and a rack provided on the optical platform, the rack meshing with the gear.

[0007] In one or more embodiments of this utility model, a support component is further provided between the driving component and the calibration component. The support component includes a second slide rail arranged along the axial direction of the pipe, a second slider is installed on the second slide rail, a support block is installed on the second slider, one end of the measuring rod is installed on the fixed block, and the other end passes through the support block.

[0008] In one or more embodiments of this utility model, the calibration component includes a first mounting block and a second mounting block arranged opposite to each other along the axial direction of the pipe. Both the first mounting block and the second mounting block have through holes coaxial with the pipe. The top of the second mounting block is provided with a first mounting plate. The first mounting plate is provided with a first cylinder. The movable end of the first cylinder is connected to a baffle. A standard part is installed in the through hole of the first mounting block. The pneumatic measuring probe passes through the standard part when it moves.

[0009] In one or more embodiments of the present invention, the clamping assembly includes a base plate mounted on an optical platform. The base plate is provided with a second cylinder and a fourth mounting block on both sides of the tube. The movable end of the second cylinder is connected to a second mounting plate. The end of the second mounting plate is provided with a first clamping block. The fourth mounting block is provided with a second clamping block. The side of the first clamping block and the second clamping block near the tube is set as an arc-shaped surface.

[0010] In one or more embodiments of this utility model, a groove-shaped first photoelectric sensor and a second photoelectric sensor are sequentially arranged along the axial direction of the tube on the optical platform, and a detection plate is provided at the bottom of the driving assembly. When the driving assembly is working, the detection plate can pass through the grooves on the first photoelectric sensor and the second photoelectric sensor.

[0011] In one or more embodiments of this utility model, a magnetic scale for detecting the axial displacement of the measuring rod is provided on the optical platform along the axial direction of the tube.

[0012] In one or more embodiments of this utility model, the optical platform is provided with multiple sets of placement plates for temporarily storing the tube along the axial direction of the tube.

[0013] The beneficial effects of this utility model are: This utility model drives the pneumatic measuring probe to move automatically along the pipe axis through the driving component, and combined with the precise feedback of the displacement by the magnetic scale, it realizes continuous scanning measurement of the inner diameter of the entire pipe, breaking through the limitation of traditional manual measurement that can only measure the two ends, and can comprehensively detect the inner diameter of the pipe at all positions.

[0014] In this invention, the pneumatic measuring probe is periodically calibrated in conjunction with standard components of the calibration assembly, effectively eliminating measurement errors; the gear and rack transmission and photoelectric sensor positioning form a closed-loop control, ensuring the accuracy of the probe's movement trajectory, significantly reducing human error, and thus improving measurement accuracy.

[0015] In this invention, the clamping assembly uses a cylinder-driven arc-shaped clamping block to achieve flexible fixing of the pipe and avoid local stress deformation caused by traditional clamps. The design of the measuring rod and probe having an outer diameter smaller than the inner diameter of the pipe allows the probe to complete the measurement in a non-contact state, completely eliminating the secondary deformation of the pipe during the measurement process.

[0016] This invention automatically generates a three-dimensional distribution map of the pipe's inner diameter by synchronizing the displacement data of the magnetic scale with the measurement values ​​of the pneumatic probe in real time. This accurately identifies areas where the pipe's inner diameter exceeds the error range, providing data support for process improvement and significantly enhancing the level of product quality control. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the ribbed pipe inner diameter measuring device in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the moving side of the ribbed pipe inner diameter measuring device in one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the measuring side of the ribbed pipe inner diameter measuring device in one embodiment of the present invention;

[0020] Figure 4 This is a cutaway view of the ribbed pipe inner diameter measuring device in one embodiment of the present invention;

[0021] Figure 5 This is a side view of the driving component in one embodiment of the present invention;

[0022] Figure 6 As shown in one embodiment of this utility model Figure 1 Enlarged view at point A;

[0023] Figure 7 This is a side view of the calibration component in one embodiment of the present invention;

[0024] Figure 8 This is a cross-sectional view of the calibration component in one embodiment of the present invention.

[0025] In the diagram: base 100, optical platform 200, pad 21, first slide rail 22, first slider 23, measuring rod 24, first photoelectric sensor 25, detection plate 26, second photoelectric sensor 27, magnetic scale 28, proximity sensor 29, dust cover 300, calibration assembly 400, first mounting block 41, second mounting block 42, first mounting plate 43, first cylinder 44, baffle 45, standard part 46, pneumatic measuring probe 47, clamping assembly 500, base plate 51, second cylinder 52, second mounting plate 53, first clamping block 54, fourth mounting block 55, second clamping block 56, placement plate 57, drive assembly 600, motor mounting plate 61, motor 62, fixing block 63, gear 64, rack 65, support assembly 700, second slide rail 71, second slider 72, support block 73, control button 800, pipe to be tested 900. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] It should be noted that, unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] As described in the background section, in the prior art, for long pipes, manual measurement methods can only measure the inner diameter at both ends of the pipe. For pipes with high precision requirements, the inner diameter at the middle position also needs to be measured. The measurement methods in the prior art cannot achieve the measurement of the inner diameter.

[0030] For the above issues, please refer to the appendix. Figure 1As shown, this utility model provides a device for measuring the inner diameter of ribbed pipes, including a base 100 and an optical platform 200 mounted on the base 100. Due to the high accuracy requirements of the ribbed pipe 900 and its relatively long length, the main frame of the device needs to possess high strength, high rigidity, and high stability. Therefore, this utility model uses two optical platforms 200 spliced ​​together and leveled using anchor bolts. The two optical platforms 200 are connected by fasteners. The optical platform 200 has at least three layers of reinforced honeycomb structure, which features good vibration isolation and high platform accuracy. A drive assembly 600, a calibration assembly 400, and a clamping assembly 500 are sequentially arranged on the optical platform 200 along the axial direction of the pipe 900. The drive assembly 600 is slidably mounted on the optical platform 200 along the axial direction of the pipe 900. A measuring rod 24, coaxially arranged with the tube 900, is fixedly connected to the drive assembly 600. The other end of the measuring rod 24 is slidably arranged on the calibration assembly 400. The tube 900 is arranged on the clamping assembly 500. A pneumatic measuring probe 47 is provided at one end of the measuring rod 24 near the tube 900. The outer diameters of both the measuring rod 24 and the pneumatic measuring probe 47 are smaller than the inner diameter of the tube 900. When the drive assembly 600 is working, the measuring rod 24 drives the pneumatic measuring probe 46 to measure the inner diameter of the tube 900.

[0031] See appendix Figures 1-5 As shown, the optical platform 200 has a pad 21 along the axial direction of the tube 900. A first slide rail 22 is provided on the pad 21, and a first slider 23 is provided on the first slide rail 22. A drive assembly 600 is mounted on the first slider 23. In this embodiment, there are two sets of pads 21, first slide rails 22, and first sliders 23. The drive assembly 600 is mounted on the first slider 23. The drive assembly 600 includes a motor mounting plate 61 mounted on the first slider 23. A motor 62 and a fixing block 63 are mounted on the motor mounting plate 61. A gear 64 is mounted on the output end of the motor 62. The optical platform 200 has a rack 65, which meshes with the gear 64. When the motor 62 rotates, the meshing of the gear 64 and rack 65 enables the measuring rod 24 to reciprocate along the axis of the tube 900.

[0032] In a further embodiment, a support component 700 is provided between the drive component 600 and the calibration component 400. The support component 700 includes a second slide rail 71 arranged axially along the tube 900, a second slider 72 mounted on the second slide rail 71, and a support block 73 mounted on the second slider 72. One end of the measuring rod 24 is mounted on the fixed block 63, and the other end passes through the support block 73. In a further embodiment, a guide rod is also provided between the fixed block 63 and the support block 73 to improve the accuracy of the reciprocating motion of the drive component 600.

[0033] In a further embodiment, the calibration assembly 400 includes a first mounting block 41 and a second mounting block 42 arranged axially opposite to each other along the pipe 900. Both the first mounting block 41 and the second mounting block 42 have through holes coaxial with the pipe 900. A first mounting plate 43 is provided on the top of the second mounting block 42, and a first cylinder 44 is mounted on the first mounting plate 43. A baffle 45 is connected to the movable end of the first cylinder 44. A standard component 46 is installed in the through hole of the first mounting block 41, and the pneumatic measuring probe 47 passes through the standard component 46 during movement. When the drive assembly 600 drives the measuring rod 24 towards the pipe 900, the pneumatic measuring probe 47 is first tested in the standard component 46. After the test is completed, the first cylinder 44 drives the baffle 45 to lift, allowing the measuring rod 24 to drive the pneumatic measuring probe 47 out of the standard component 46 to begin measuring the pipe 900. In this embodiment, the pneumatic measuring probe 47 is a high-end, high-reliability probe used in the industry, and its manufacturing material is US1000 wear-resistant material. It is also equipped with a series of high-precision inner diameter calibration blocks to achieve high-precision calibration of the system. The head is equipped with a nylon guide cap, and the structure of the pneumatic measuring probe 47 is existing technology. For details, please refer to the Chinese utility model patent with application number "201920277734.2" entitled "Pneumatic Probe for Inner Diameter Measurement".

[0034] In a further embodiment, to ensure that the pipe 900 does not deform during testing, the pipe 900 is supported by a clamping assembly 500, wherein the clamping assembly 500 is provided with at least four sets along the axial direction of the pipe 900. The clamping assembly 500 includes a base plate 51 mounted on an optical platform. The base plate 51 is provided with a second cylinder 52 and a fourth mounting block 55 on both sides of the pipe 900, respectively. The movable end of the second cylinder 52 is connected to a second mounting plate 53. The end of the second mounting plate 53 is provided with a first clamping block 54. The fourth mounting block 55 is provided with a second clamping block 56. The side of the first clamping block 54 and the second clamping block 56 near the pipe 900 is set as an arc surface. During measurement, the second cylinder 52 drives the first clamping block 54 to cooperate with the second clamping block 56, so that its arc surface can clamp the pipe 900. In this embodiment, the first clamping block 54 and the second clamping block 56 are nylon clamping blocks to prevent the pipe 900 from moving during measurement. When the cylinder retracts, the clamping blocks release the ribbed pipe 900. The clamping blocks are made of nylon material to avoid damaging the surface of the ribbed pipe 900. In this embodiment, a control button 800 is also provided to control the working status of the device.

[0035] In a further embodiment, the optical platform 200 is provided with a grooved first photoelectric sensor 25 and a second photoelectric sensor 27 sequentially along the axial direction of the tube 900. A detection plate 26 is provided at the bottom of the drive assembly 600. When the drive assembly 600 is working, the detection plate 26 can pass through the grooves on the first photoelectric sensor 25 and the second photoelectric sensor 27 to ensure the accuracy of the axial movement of the drive assembly during reciprocating motion. A magnetic scale 28 for detecting the axial displacement of the measuring rod 24 is also provided on the optical platform 200 along the axial direction of the tube 900 to achieve automated control of the entire device. Multiple sets of placement plates 57 for temporarily storing the tube 900 are provided on the optical platform 200 along the axial direction of the tube 900. The placement plates 57 are used to place the measured tube 900.

[0036] Workflow: Before operation, the pneumatic measuring probe 46 is tested on the standard part 47. When the data measured by the pneumatic measuring probe 46 matches the inner diameter of the standard part 47, the test is completed, and the baffle 45 is removed. The motor 62 rotates and drives the measuring rod 54 to move axially through the gear 63 and rack 64. The pneumatic measuring probe 46 measures the pipe 900. The magnetic scale 28 records the axial displacement of the pneumatic measuring probe 46, thereby clearly understanding where the inner diameter of the pipe 900 has an error, and realizing the measurement of the inner diameter of the pipe 900 throughout its entire length.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A ribbed pipe internal diameter measuring device, characterised in that, The measuring device includes a base (100) and an optical platform (200) disposed on the base (100). A drive assembly (600), a calibration assembly (400), and a clamping assembly (500) are sequentially disposed on the optical platform (200) along the axial direction of the tube (900). The drive assembly (600) is slidably disposed on the optical platform (200) along the axial direction of the tube (900). A measuring rod (24) coaxially disposed with the tube (900) is fixedly connected to the drive assembly (600). The other end of the measuring rod (24) is slidably mounted on the calibration assembly (400), and the tube (900) is mounted on the clamping assembly (500). A pneumatic measuring probe (47) is provided at one end of the measuring rod (24) near the tube (900). The outer diameter of both the measuring rod (24) and the pneumatic measuring probe (47) is smaller than the inner diameter of the tube (900). When the drive assembly (600) is working, the measuring rod (24) drives the pneumatic measuring probe (47) to measure the inner diameter of the tube (900).

2. The ribbed pipe inner diameter measuring device according to claim 1, characterized in that, The optical platform (200) has a pad (21) on the side away from the tube (900) along the axial direction. The pad (21) has a first slide rail (22) and a first slider (23) on the first slide rail (22). The drive assembly (600) is mounted on the first slider (23).

3. The ribbed pipe inner diameter measuring device according to claim 2, characterized in that, The drive assembly (600) includes a motor mounting plate (61) mounted on the first slider (23), on which a motor (62) and a fixing block (63) are mounted. A gear (64) is mounted on the output end of the motor (62). A rack (65) is provided on the optical platform (200), and the rack (65) meshes with the gear (64).

4. The ribbed pipe inner diameter measuring device according to claim 3, characterized in that, A support component (700) is also provided between the drive component (600) and the calibration component (400). The support component (700) includes a second slide rail (71) arranged axially along the pipe (900), a second slider (72) is mounted on the second slide rail (71), and a support block (73) is mounted on the second slider (72). One end of the measuring rod (24) is mounted on the fixed block (63), and the other end passes through the support block (73).

5. The ribbed pipe inner diameter measuring device according to claim 1, characterized in that, The calibration assembly (400) includes a first mounting block (41) and a second mounting block (42) arranged axially opposite to each other along the pipe (900). Both the first mounting block (41) and the second mounting block (42) have through holes coaxial with the pipe (900). The top of the second mounting block (42) is provided with a first mounting plate (43). The first mounting plate (43) is provided with a first cylinder (44). The movable end of the first cylinder (44) is connected to a baffle (45). A standard part (46) is installed in the through hole of the first mounting block (41). The pneumatic measuring probe (47) passes through the standard part (46) when it moves.

6. The ribbed pipe inner diameter measuring device according to claim 1, characterized in that, The clamping assembly (500) includes a base plate (51) mounted on an optical platform. The base plate (51) has a second cylinder (52) and a fourth mounting block (55) on both sides of the tube (900). The movable end of the second cylinder (52) is connected to a second mounting plate (53). The end of the second mounting plate (53) is provided with a first clamping block (54). The fourth mounting block (55) is provided with a second clamping block (56). The side of the first clamping block (54) and the second clamping block (56) near the tube (900) is set as an arc surface.

7. The ribbed pipe inner diameter measuring device according to claim 1, characterized in that, The optical platform (200) is provided with a groove-shaped first photoelectric sensor (25) and a second photoelectric sensor (27) in sequence along the axial direction of the tube (900). The bottom of the drive assembly (600) is provided with a detection plate (26). When the drive assembly (600) is working, the detection plate (26) can pass through the grooves on the first photoelectric sensor (25) and the second photoelectric sensor (27).

8. The device for measuring the inner diameter of ribbed pipes according to claim 1, characterized in that, The optical platform (200) is provided with a magnetic scale (28) along the axial direction of the tube (900) for detecting the axial displacement of the measuring rod (24).

9. The ribbed pipe inner diameter measuring device according to claim 1, characterized in that, The optical platform (200) is provided with multiple sets of placement plates (57) along the axial direction of the tube (900) for temporarily storing the tube (900).

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