Device and method for measuring precision of inner wall and outer wall of steel pipe

Abstract

The invention belongs to the technical field of steel pipe inner and outer wall precision measurement, and particularly relates to a steel pipe inner and outer wall precision measurement device and a measurement method thereof.The steel pipe inner and outer wall precision measurement device comprises a circular ring, a plurality of clamping plates are arranged in the circular ring, rubber pads are fixedly installed on the clamping plates, and a plurality of first infrared distance meters are fixedly installed on the inner wall of the circular ring; a fixing frame is fixedly installed on one side of the circular ring, a fixing block is fixedly installed on one side of the fixing frame, a handle is fixedly installed on the other side of the fixing frame, and a plurality of second infrared distance meters are fixedly installed on the peripheral side of the fixing block; the driving assembly is located in the circular ring and used for driving the multiple clamping plates to move; the coaxiality of the reference axis of the measuring device and the central axis of the steel pipe can be ensured, meanwhile, micro displacement or inclination of the device in the measuring process is avoided, and compared with an existing hoop type and manual handheld positioning mode, the device is suitable for precision detection of the steel pipe.

Description

Technical Field

[0001] This invention belongs to the field of steel pipe inner and outer wall accuracy measurement technology, and particularly relates to a device and method for measuring the accuracy of steel pipe inner and outer walls. Background Technology

[0002] As a core basic component in fields such as machinery manufacturing, oil and gas transportation, and construction engineering, the dimensional accuracy of steel pipes directly affects the assembly accuracy, load-bearing capacity, and service safety of components. For example, the roughness and thickness deviation of the inner wall of oil and gas transportation pipelines can lead to increased resistance to medium flow and local stress concentration, which can cause leakage accidents in severe cases. The dimensional tolerances of the inner and outer walls of steel pipes used for precision machining need to be controlled within the micrometer level; otherwise, it will affect the subsequent assembly accuracy and equipment operation stability. Therefore, efficient and accurate measurement of the inner and outer wall accuracy is a key link in ensuring product quality during the production and application of steel pipes.

[0003] With the development of measurement technology, optical measurement methods have gradually replaced traditional mechanical contact measurements due to their advantages such as non-contact measurement, high efficiency, high resolution, and no mechanical wear. However, existing optical-based precision measurement devices for the inner and outer walls of steel pipes suffer from measurement errors caused by inaccurate device positioning in practical applications. The accuracy of optical measurement depends on the precise alignment and fixation of the measuring device with the steel pipe, ensuring that the measurement reference axis of the measuring device coincides with the central axis of the steel pipe. In addition, impurities such as iron filings, scale, oil stains, and dust are easily left on the inner wall of the steel pipe. These impurities can cause absorption, scattering, or diffuse reflection interference to the infrared laser signal, preventing the laser from being accurately focused on the reference surface of the inner wall of the steel pipe. This leads to distortion of the reflected signal received by the measurement system, resulting in measurement deviations in parameters such as wall thickness and inner diameter. In view of this, we propose a precision measurement device and method for the inner and outer walls of steel pipes. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for measuring the accuracy of the inner and outer walls of steel pipes, so as to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a device and method for measuring the accuracy of the inner and outer walls of steel pipes, comprising: A circular ring, with several clamping plates inside the ring, rubber pads fixedly installed on the clamping plates, several infrared rangefinders fixedly installed on the inner wall of the ring, a fixed frame fixedly installed on one side of the ring, a fixed block fixedly installed on one side of the fixed frame, a handle fixedly installed on the other side of the fixed frame, and several infrared rangefinders fixedly installed on the periphery of the fixed block. A drive assembly, located inside the ring, is used to drive several clamping plates to move. A rotating rod is rotatably mounted on one side of a fixed block. A sliding groove is provided inside the rotating rod, and a telescopic rod is slidably mounted in the sliding groove. The top of the telescopic rod passes through the top of the sliding groove and is fixedly mounted with a lifting rod. A second drive motor is fixedly mounted on one side of the lifting rod. The output end of the second drive motor passes through the lifting rod and is fixedly mounted with a rotating rod. A rotating roller is sleeved on the rotating rod, and a cleaning roller is sleeved around the circumference of the rotating roller. An electric push rod is fixedly mounted at the bottom of the sliding groove, and the output end of the electric push rod is fixedly connected to the telescopic rod. The power assembly is located inside the fixed block and is used to drive the rotating rod to rotate. A fixing component is located inside the rotating rod and is used to fix the rotating roller.

[0006] In this technical solution, during use, the operator can place the ring on one end of the steel pipe, and then drive the drive assembly to move several clamping plates, so that the clamping plates can move towards the periphery of the steel pipe simultaneously until the rubber pads on the clamping plates are pressed against the periphery of the steel pipe, thereby fixing the ring to the steel pipe. After fixing, the center of the ring will automatically align with the center of the steel pipe, thereby achieving rapid positioning of the measuring device and the steel pipe. Personnel can activate the electric push rod, whose output shaft will drive the telescopic rod to move upward. The telescopic rod's upward movement will drive the lifting rod to move upward, which in turn will drive the rotating roller to move upward, until the cleaning roller on the periphery of the rotating roller touches the inner wall of the steel pipe. Then, the second drive motor will be activated, and its output shaft will drive the rotating rod to rotate. The rotating rod's rotation will drive the rotating roller to rotate, which in turn will drive the cleaning roller to rotate. Simultaneously, the power assembly will drive the rotating rod to rotate, which will drive the cleaning roller to rotate. Under the action of the rotating cleaning roller, impurities on the inner wall of the steel pipe can be cleaned, preventing impurities from affecting the accuracy of subsequent measurements. Personnel can use several infrared rangefinders to measure the outer diameter of the steel pipe, and use several infrared rangefinders to measure the diameter, roundness, and wall thickness uniformity of the steel pipe. After the measurement is completed, personnel can disassemble the entire device from the steel pipe. Personnel can release the rotating roller from the fixing component and remove it from the rotating rod. At this time, personnel can clean or replace the cleaning roller on the rotating roller to keep the cleaning roller clean and avoid affecting the cleaning effect.

[0007] In the above technical solution, the driving component further includes: Several threaded rods are fixedly mounted on several clamping plates. Guide rods are fixedly mounted on both sides of the threaded rods on the clamping plates. One end of the guide rod passes through a circular ring. Several movable slots are opened inside the circular ring. A bevel gear is rotatably mounted in the movable slot. A limit ring is fixedly mounted on the bevel gear. The top of the threaded rod passes through the corresponding bevel gear and the circular ring and extends to the outside. An annular groove is opened inside the circular ring on one side of the movable slot. A bevel gear is rotatably mounted in the annular groove. A rotating groove is opened inside the circular ring on one side of the annular groove. A bevel gear is rotatably mounted in the rotating groove, meshing with bevel gear two. A limit ring is fixedly mounted on bevel gear three. A drive motor is fixedly mounted on the circumference of the circular ring. The output end of the drive motor passes through the circumference of the circular ring and is coaxially connected to bevel gear three.

[0008] In this technical solution, starting drive motor one causes the output shaft of drive motor one to drive bevel gear three to rotate. Under the action of meshing, the rotation of bevel gear three drives bevel gear two to rotate. Under the action of meshing, the rotation of bevel gear two drives several bevel gears one to rotate. Under the action of the thread, the rotation of bevel gear one drives the threaded rod to move. The movement of the threaded rod drives the clamping plate to move. The movement of the clamping plate drives two guide rods to slide within the ring. The two guide rods can ensure the stability of the clamping plate during movement, so that several clamping plates can move towards the periphery of the steel pipe simultaneously until the rubber pads on the clamping plates are pressed against the periphery of the steel pipe, thereby fixing the ring to the steel pipe. After fixing, the center of the ring will automatically align with the center of the steel pipe, thereby realizing the rapid positioning of the measuring device and the steel pipe.

[0009] In the above technical solution, the threaded rod is threadedly connected to the bevel gear one, the threaded rod is slidably connected to the ring, the guide rod is slidably connected to the ring, the limiting ring one is rotatably connected to the ring, the bevel gear one meshes with the bevel gear two, the limiting ring two is rotatably connected to the ring, and the output shaft of the drive motor one is rotatably connected to the ring.

[0010] In this technical solution, it is ensured that the rotation of the first bevel gear can drive the threaded rod to move, that the threaded rod can slide normally within the ring, that the guide rod can slide normally within the ring, that the first limit ring can rotate normally within the ring, that the rotation of the first bevel gear can drive the second bevel gear to rotate, that the second limit ring can rotate normally within the ring, and that the output shaft of the first drive motor can rotate normally within the ring.

[0011] In the above technical solution, the power component further includes: A drive rod is rotatably mounted inside a fixed block. One end of the drive rod passes through the fixed block and is coaxially connected to a rotating rod. A rotating groove is formed inside the fixed block and on the periphery of the drive rod. A gear ring is fixedly mounted on the periphery of the drive rod and inside the rotating groove. A first gear is meshed on one side of the gear ring and inside the rotating groove. A drive slot is formed inside the fixed block and on one side of the rotating groove. A third drive motor is fixedly mounted inside the drive slot. The output end of the third drive motor passes through one side of the drive slot and is coaxially connected to the first gear.

[0012] In this technical solution, starting the drive motor three causes the output shaft of the drive motor three to drive the first gear to rotate. Under the action of meshing, the rotation of the first gear drives the gear ring to rotate, the rotation of the gear ring drives the drive rod to rotate, the rotation of the drive rod drives the rotating rod to rotate, and the rotation of the rotating rod drives the cleaning roller to rotate. Under the action of the cleaning roller rotating, impurities on the inner wall of the steel pipe can be cleaned, which can prevent impurities from affecting the accuracy of subsequent measurements.

[0013] In the above technical solution, the gear ring is rotatably connected to the rotating groove, the first gear is rotatably connected to the rotating groove, and the output shaft of the drive motor is rotatably connected to the fixed block.

[0014] In this technical solution, it is ensured that the gear ring and the first gear can rotate normally in the slot, and that the output shaft of the drive motor can rotate normally in the fixed block.

[0015] In the above technical solution, the fixing component further includes: A chute is formed inside the rotating rod. A limit block is slidably installed inside the chute. One end of the limit block passes through the chute and extends into the rotating roller. Another side of the limit block passes through the chute and extends to the outside, where a pressing block is fixedly installed. A round rod is fixedly installed at the bottom of the chute, and a spring is sleeved on the round rod.

[0016] In this technical solution, personnel can press the pressing block. The movement of the pressing block will cause the limiting block to move. The movement of the limiting block will compress the spring and contract it until one end of the limiting block moves out of the rotating roller. At this time, the limiting block can release the rotating roller from the rotating rod. Personnel can then clean or replace the cleaning roller on the rotating roller to keep it clean and avoid affecting the cleaning effect of the cleaning roller.

[0017] In the above technical solution, one end of the limiting block is inserted into the rotating roller, one end of the limiting block has an inclined structure, and both ends of the spring are tightly welded to the limiting block and the inner wall of the slide groove, respectively.

[0018] In this technical solution, it is ensured that one end of the limiting block can be inserted into the rotating roller, thus ensuring the structural stability of the limiting block and the spring.

[0019] In the above technical solution, the output shaft of the second drive motor is rotatably connected to the lifting rod, the rotating rod is inserted into the rotating roller, a battery is fixedly installed in the fixed block, and the battery is electrically connected to several infrared rangefinders, several infrared rangefinders, drive motor one, drive motor two, drive motor three, and electric push rod.

[0020] In this technical solution, it is ensured that the output shaft of the second drive motor can rotate normally inside the lifting rod, that the rotating rod can be inserted into the rotating roller, and that the battery can supply power to several infrared rangefinders, several infrared rangefinders, drive motor one, drive motor two, drive motor three, and electric push rod.

[0021] The above technical solution further includes the following methods: S1. In use, the operator can place the ring on one end of the steel pipe. Then, simply start the drive motor one. The output shaft of the drive motor one will drive the bevel gear three to rotate. Under the action of meshing, the rotation of the bevel gear three will drive the rotation of the bevel gear two. Under the action of meshing, the rotation of the bevel gear two will drive several bevel gears one to rotate. Under the action of the thread, the rotation of the bevel gear one will drive the threaded rod to move. The movement of the threaded rod will drive the clamping plate to move. The movement of the clamping plate will drive the two guide rods to slide inside the ring. The two guide rods can ensure the stability of the clamping plate when it moves, so that several clamping plates can move towards the periphery of the steel pipe at the same time until the rubber pad on the clamping plate is pressed against the periphery of the steel pipe, thereby fixing the ring to the steel pipe. After fixing, the center of the ring will automatically align with the center of the steel pipe, thereby realizing the rapid positioning of the measuring device and the steel pipe. S2. Personnel can start the electric push rod. The output shaft of the electric push rod will drive the telescopic rod to move upward. The upward movement of the telescopic rod will drive the lifting rod to move upward. The upward movement of the lifting rod will drive the rotating roller to move upward through the rotating rod until the circumferential cleaning roller of the rotating roller touches the inner wall of the steel pipe. Then, drive motor two will be started. The output shaft of drive motor two will drive the rotating rod to rotate. The rotation of the rotating rod will drive the rotating roller to rotate. The rotation of the rotating roller will drive the cleaning roller to rotate. At the same time, drive motor three will be started. The output shaft of drive motor three will drive the first gear to rotate. Under the action of meshing, the rotation of the first gear will drive the gear ring to rotate. The rotation of the gear ring will drive the drive rod to rotate. The rotation of the drive rod will drive the rotating rod to rotate. The rotation of the rotating rod will drive the cleaning roller to rotate. Under the action of the rotating cleaning roller, impurities on the inner wall of the steel pipe can be cleaned, which can prevent impurities from affecting the accuracy of subsequent measurements. S3. Personnel can use several infrared rangefinders to measure the outer diameter of the steel pipe, and use several infrared rangefinders to measure the diameter, roundness, and wall thickness uniformity of the steel pipe. After the measurement is completed, personnel can disassemble the entire device from the steel pipe. S4. Personnel can press the pressing block. The movement of the pressing block will drive the limit block to move. The movement of the limit block will compress the spring and contract it until one end of the limit block moves out of the rotating roller. At this time, the limit block can release the rotating roller from the rotating rod. Personnel can then clean or replace the cleaning roller on the rotating roller to keep it clean and avoid affecting the cleaning effect of the cleaning roller.

[0022] The beneficial effects of this invention are: 1. This device and method for measuring the precision of the inner and outer walls of steel pipes, through the coordinated action of the drive assembly, clamping plate, and rubber pad, can automatically adapt to steel pipes with different outer diameters and ellipticities, ensuring the coaxiality of the reference axis of the measuring device with the central axis of the steel pipe. It also avoids micro-displacement or tilting of the device during measurement. Compared to existing clamp-type or manual handheld positioning methods, this device is suitable for precision inspection of steel pipes and can meet the micron-level tolerance measurement requirements of oil and gas pipelines and precision machinery steel pipes, effectively ensuring subsequent assembly accuracy and service safety.

[0023] 2. This device and method for measuring the precision of the inner and outer walls of steel pipes, through the coordinated action of a power component, rotating roller, cleaning roller, motor, rotating rod, and electric push rod, can automatically remove solid impurities such as iron filings and oxide scale from the inner wall of the steel pipe before measurement. Simultaneously, a biodegradable cleaning liquid atomization device removes oil stains and filters interference signals generated by diffuse reflection of impurities, ensuring that the laser is precisely focused on the inner wall reference surface. This completely eliminates traditional manual wiping and chemical cleaning processes, and avoids problems such as incomplete manual cleaning and scratches on the inner wall, thus ensuring the surface quality of the steel pipe.

[0024] 3. This device and method for measuring the precision of the inner and outer walls of steel pipes, through the setting of fixed components, and with the cooperation of the fixed components, rotating rollers and cleaning rollers, allows personnel to easily clean or replace the cleaning rollers on the rotating rollers after use, so that the cleaning rollers can be kept clean and the cleaning effect of the cleaning rollers can be avoided. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the annular region structure in this invention; Figure 3 This is a detailed schematic diagram of the internal structure of the ring in this invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the cross-sectional structure of the ring in this invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a detailed internal structural diagram of the fixing block in this invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C; Figure 9 This is a detailed internal structural diagram of the rotating rod in this invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point D.

[0026] The markings in the diagram are as follows: 1. Ring; 2. Clamping plate; 3. Rubber pad; 4. Guide rod; 5. Threaded rod; 6. Movable groove; 7. Bevel gear one; 8. Limiting ring one; 9. Annular groove; 10. Bevel gear two; 11. Rotating groove; 12. Bevel gear three; 13. Limiting ring two; 14. Drive motor one; 15. Fixing frame; 16. Fixing block; 17. Handle; 18. Rotating rod; 19. Sliding groove; 20. Telescopic rod; 21. 21. Lifting rod; 22. Electric push rod; 23. Rotating rod; 24. Rotating roller; 25. Cleaning roller; 26. Drive motor II; 27. Slide groove; 28. Limiting block; 29. ​​Pressing block; 30. Round rod; 31. Spring; 32. Rotating groove; 33. Drive rod; 34. Gear ring; 35. First gear; 36. Drive groove; 37. Drive motor III; 38. Infrared rangefinder I; 39. Infrared rangefinder II; 40. Storage battery. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0032] Example 1: Please see Figure 1 - Figure 10 As shown, this embodiment provides a device for measuring the accuracy of the inner and outer walls of steel pipes, including: A circular ring 1 is provided inside the circular ring 1. A number of clamping plates 2 are provided inside the circular ring 1. Rubber pads 3 are fixedly installed on the clamping plates 2. A number of infrared rangefinders 38 are fixedly installed on the inner wall of the circular ring 1. A fixing frame 15 is fixedly installed on one side of the circular ring 1. A fixing block 16 is fixedly installed on one side of the fixing frame 15. A handle 17 is fixedly installed on the other side of the fixing frame 15. A number of infrared rangefinders 39 are fixedly installed around the fixing block 16. A drive assembly is located inside the ring 1 and is used to drive several clamping plates 2 to move. A rotating rod 18 is rotatably mounted on one side of a fixed block 16. A sliding groove 19 is provided inside the rotating rod 18. A telescopic rod 20 is slidably mounted inside the sliding groove 19. The top end of the telescopic rod 20 passes through the top of the sliding groove 19 and is fixedly mounted with a lifting rod 21. A second drive motor 26 is fixedly mounted on one side of the lifting rod 21. The output end of the second drive motor 26 passes through the lifting rod 21 and is fixedly mounted with a rotating rod 23. A rotating roller 24 is sleeved on the rotating rod 23. A cleaning roller 25 is sleeved around the rotating roller 24. An electric push rod 22 is fixedly mounted at the bottom of the sliding groove 19. The output end of the electric push rod 22 is fixedly connected to the telescopic rod 20. The power assembly is located inside the fixed block 16 and is used to drive the rotating rod 18 to rotate. A fixing component is located inside the rotating rod 23 and is used to fix the rotating roller 24.

[0033] In use, the operator can place the ring 1 on one end of the steel pipe, and then drive the drive assembly to move several clamping plates 2, so that the clamping plates 2 can move towards the periphery of the steel pipe at the same time until the rubber pads 3 on the clamping plates 2 are pressed against the periphery of the steel pipe, thereby fixing the ring 1 to the steel pipe. After fixing, the center of the ring 1 will automatically align with the center of the steel pipe, thereby realizing the rapid positioning of the measuring device and the steel pipe. Personnel can activate the electric push rod 22. The output shaft of the electric push rod 22 will drive the telescopic rod 20 to move upward. The upward movement of the telescopic rod 20 will drive the lifting rod 21 to move upward. The upward movement of the lifting rod 21 will drive the rotating roller 24 to move upward through the rotating rod 23 until the circumferential cleaning roller 25 of the rotating roller 24 abuts against the inner wall of the steel pipe. Then, the second drive motor 26 will be activated. The output shaft of the second drive motor 26 will drive the rotating rod 23 to rotate. The rotation of the rotating rod 23 will drive the rotating roller 24 to rotate. The rotation of the rotating roller 24 will drive the cleaning roller 25 to rotate. At the same time, the power component will drive the rotating rod 18 to rotate. The rotation of the rotating rod 18 will drive the cleaning roller 25 to rotate. Under the action of the rotating cleaning roller 25, impurities on the inner wall of the steel pipe can be cleaned, which can prevent impurities from affecting the accuracy of subsequent measurements. Personnel can use several infrared rangefinders 38 to measure the outer diameter of the steel pipe, and use several infrared rangefinders 39 to measure the diameter, roundness, and wall thickness uniformity of the steel pipe. After the measurement is completed, personnel can disassemble the entire device from the steel pipe. Personnel can release the rotating roller 24 from the fixing component and remove it from the rotating rod 23. At this time, personnel can clean or replace the cleaning roller 25 on the rotating roller 24 to keep the cleaning roller 25 clean and avoid affecting the cleaning effect of the cleaning roller 25.

[0034] Example 2: This embodiment provides a device for measuring the accuracy of the inner and outer walls of steel pipes. In addition to the technical solutions described in the above embodiments, it also has the following technical features, including a driving component: Several threaded rods 5 are fixedly mounted on several clamping plates 2. Guide rods 4 are fixedly mounted on both sides of the threaded rods 5 on the clamping plates 2. One end of the guide rod 4 passes through a ring 1. Several movable grooves 6 are opened in the ring 1. A bevel gear 7 is rotatably mounted in the movable groove 6. A limit ring 8 is fixedly mounted on the bevel gear 7. The top of the threaded rod 5 passes through the corresponding bevel gear 7 and the ring 1 and extends to the outside. An annular groove 9 is opened in the ring 1 on one side of the movable grooves 6. A bevel gear 10 is rotatably mounted in the annular groove 9. A rotating groove 11 is opened in the ring 1 on one side of the annular groove 9. A bevel gear 12 that meshes with the bevel gear 10 is rotatably mounted in the rotating groove 11. A limit ring 13 is fixedly mounted on the bevel gear 12. A drive motor 14 is fixedly mounted on the periphery of the ring 1. The output end of the drive motor 14 passes through the periphery of the ring 1 and is coaxially connected to the bevel gear 12.

[0035] When the drive motor 14 is started, its output shaft drives the bevel gear 12 to rotate. Under meshing, the bevel gear 12 rotates, which in turn drives the bevel gear 10 to rotate. Under meshing, the bevel gear 10 rotates, which in turn drives several bevel gears 7 to rotate. Under the action of the thread, the bevel gears 7 rotate, which drives the threaded rod 5 to move. The movement of the threaded rod 5 drives the clamping plate 2 to move. The movement of the clamping plate 2 causes the two guide rods 4 to slide within the ring 1. The two guide rods 4 ensure the stability of the clamping plate 2 during movement, allowing several clamping plates 2 to move synchronously towards the circumference of the steel pipe until the rubber pads 3 on the clamping plate 2 are pressed against the circumference of the steel pipe, thus fixing the ring 1 to the steel pipe. After fixing, the center of the ring 1 automatically aligns with the center of the steel pipe, thereby achieving rapid positioning of the measuring device and the steel pipe.

[0036] Example 3: This embodiment provides a precision measuring device for the inner and outer walls of steel pipes. In addition to the technical solutions of the above embodiments, it also has the following technical features: the threaded rod 5 is threadedly connected to the bevel gear 7, the threaded rod 5 is slidably connected to the ring 1, the guide rod 4 is slidably connected to the ring 1, the limiting ring 8 is rotatably connected to the ring 1, the bevel gear 7 meshes with the bevel gear 10, the limiting ring 13 is rotatably connected to the ring 1, and the output shaft of the drive motor 14 is rotatably connected to the ring 1.

[0037] Specifically, it is ensured that the rotation of bevel gear 7 can drive the threaded rod 5 to move, that the threaded rod 5 can slide normally within the ring 1, that the guide rod 4 can slide normally within the ring 1, that the limit ring 8 can rotate normally within the ring 1, that the rotation of bevel gear 7 can drive the rotation of bevel gear 10, that the limit ring 13 can rotate normally within the ring 1, and that the output shaft of drive motor 14 can rotate normally within the ring 1.

[0038] Example 4: This embodiment provides a device for measuring the accuracy of the inner and outer walls of steel pipes. In addition to the technical solutions described in the above embodiments, it also has the following technical features: the power assembly includes: A drive rod 33 is rotatably mounted in a fixed block 16. One end of the drive rod 33 passes through the fixed block 16 and is coaxially connected to a rotating rod 18. A rotating groove 32 is provided in the fixed block 16 and on the periphery of the drive rod 33. A gear ring 34 is fixedly mounted on the periphery of the drive rod 33 and in the rotating groove 32. A first gear 35 is meshed on one side of the gear ring 34 and in the rotating groove 32. A drive groove 36 is provided in the fixed block 16 and on one side of the rotating groove 32. A drive motor 37 is fixedly mounted in the drive groove 36. The output end of the drive motor 37 passes through one side of the drive groove 36 and is coaxially connected to the first gear 35.

[0039] When the drive motor 37 is started, its output shaft drives the first gear 35 to rotate. Under the action of meshing, the rotation of the first gear 35 drives the gear ring 34 to rotate, the rotation of the gear ring 34 drives the drive rod 33 to rotate, the rotation of the drive rod 33 drives the rotating rod 18 to rotate, and the rotation of the rotating rod 18 drives the cleaning roller 25 to rotate. Under the action of the cleaning roller 25 rotating, impurities on the inner wall of the steel pipe can be cleaned, which can prevent impurities from affecting the accuracy of subsequent measurements.

[0040] Example 5: This embodiment provides a precision measuring device for the inner and outer walls of steel pipes. In addition to the technical solutions of the above embodiments, it also has the following technical features: the gear ring 34 is rotatably connected to the rotating groove 32, the first gear 35 is rotatably connected to the rotating groove 32, and the output shaft of the drive motor 37 is rotatably connected to the fixed block 16.

[0041] Specifically, it ensures that the gear ring 34 and the first gear 35 can rotate normally within the rotating groove 32, and ensures that the output shaft of the drive motor 37 can rotate normally within the fixed block 16.

[0042] Example 6: This embodiment provides a device for measuring the accuracy of the inner and outer walls of steel pipes. In addition to the technical solutions described in the above embodiments, it also has the following technical features: the fixing components include: The slide 27 is opened inside the rotating rod 23. A limiting block 28 is slidably installed inside the slide 27. One end of the limiting block 28 passes through the slide 27 and extends into the rotating roller 24. One side of the limiting block 28 passes through the slide 27 and extends to the outside and is fixedly installed with a pressing block 29. A round rod 30 is fixedly installed at the bottom of the slide 27, and a spring 31 is sleeved on the round rod 30.

[0043] Personnel can press the pressing block 29. The movement of the pressing block 29 will cause the limiting block 28 to move. The movement of the limiting block 28 will compress the spring 31 and contract it until one end of the limiting block 28 moves out of the rotating roller 24. At this time, the limiting block 28 can release the rotating roller 24 from the rotating rod 23. Personnel can then clean or replace the cleaning roller 25 on the rotating roller 24 to keep the cleaning roller 25 clean and avoid affecting the cleaning effect of the cleaning roller 25.

[0044] Example 7: This embodiment provides a precision measuring device for the inner and outer walls of steel pipes. In addition to the technical solutions of the above embodiments, it also has the following technical features: one end of the limiting block 28 is inserted into the rotating roller 24, one end of the limiting block 28 has an inclined structure, and both ends of the spring 31 are tightly welded to the inner walls of the limiting block 28 and the slide groove 27, respectively.

[0045] In this way, it is ensured that one end of the limiting block 28 can be inserted into the rotating roller 24, thus ensuring the structural stability of the limiting block 28 and the structural stability of the spring 31.

[0046] Example 8: This embodiment provides a precision measuring device for the inner and outer walls of steel pipes. In addition to the technical solutions of the above embodiments, it also has the following technical features: the output shaft of the second drive motor 26 is rotatably connected to the lifting rod 21; the rotating rod 23 is inserted into the rotating roller 24; a storage battery 40 is fixedly installed in the fixing block 16; and the storage battery 40 is electrically connected to several infrared rangefinders 38, several infrared rangefinders 39, the first drive motor 14, the second drive motor 26, the third drive motor 37, and the electric push rod 22.

[0047] Specifically, it ensures that the output shaft of the second drive motor 26 can rotate normally within the lifting rod 21, that the rotating rod 23 can be inserted into the rotating roller 24, and that the battery 40 can supply power to several infrared rangefinders 38, several infrared rangefinders 39, the first drive motor 14, the second drive motor 26, the third drive motor 37, and the electric push rod 22.

[0048] Example 9: This embodiment provides a method for measuring the accuracy of the inner and outer walls of steel pipes. In addition to the technical solutions of the above embodiments, it also has the following technical features and methods: S1. In use, the operator can place the ring 1 on one end of the steel pipe. Then, simply start the drive motor 14. The output shaft of the drive motor 14 will drive the bevel gear 3 12 to rotate. Under the action of meshing, the rotation of the bevel gear 3 12 will drive the rotation of the bevel gear 2 10. Under the action of meshing, the rotation of the bevel gear 2 10 will drive several bevel gears 7 to rotate. Under the action of the thread, the rotation of the bevel gears 7 will drive the threaded rod 5 to move. The movement of the threaded rod 5 will drive the clamping plate 2 to move. The movement of the clamping plate 2 will drive the two guide rods 4 to slide inside the ring 1. The two guide rods 4 can ensure the stability of the clamping plate 2 when it moves, so that several clamping plates 2 can move towards the periphery of the steel pipe at the same time until the rubber pad 3 on the clamping plate 2 is pressed against the periphery of the steel pipe, thereby fixing the ring 1 to the steel pipe. After fixing, the center of the ring 1 will automatically align with the center of the steel pipe, thereby realizing the rapid positioning of the measuring device and the steel pipe. S2. Personnel can activate the electric push rod 22. The output shaft of the electric push rod 22 will drive the telescopic rod 20 to move upward. The upward movement of the telescopic rod 20 will drive the lifting rod 21 to move upward. The upward movement of the lifting rod 21 will drive the rotating roller 24 to move upward through the rotating rod 23 until the circumferential cleaning roller 25 of the rotating roller 24 abuts against the inner wall of the steel pipe. Then, the drive motor 26 will be activated. The output shaft of the drive motor 26 will drive the rotating rod 23 to rotate. The rotation of the rotating rod 23 will drive the rotating roller 24 to rotate. The rotation of the rotating roller 24 will drive the cleaning roller... 25 rotates, and at the same time, drive motor 37 is started. The output shaft of drive motor 37 will drive the first gear 35 to rotate. Under the action of meshing, the rotation of the first gear 35 will drive the gear ring 34 to rotate. The rotation of the gear ring 34 will drive the drive rod 33 to rotate. The rotation of the drive rod 33 will drive the rotating rod 18 to rotate. The rotation of the rotating rod 18 will drive the cleaning roller 25 to rotate. Under the action of the cleaning roller 25 rotating, impurities on the inner wall of the steel pipe can be cleaned, which can prevent impurities from affecting the accuracy of subsequent measurements. S3. Personnel can use several infrared rangefinders 38 to measure the outer diameter of the steel pipe, and use several infrared rangefinders 39 to measure the diameter, roundness, and wall thickness uniformity of the steel pipe. After the measurement is completed, personnel can disassemble the entire device from the steel pipe. S4. Personnel can press the pressing block 29. The movement of the pressing block 29 will drive the limiting block 28 to move. The movement of the limiting block 28 will compress the spring 31 to contract until one end of the limiting block 28 moves out of the rotating roller 24. At this time, the limiting block 28 can release the rotating roller 24 from the rotating rod 23. Personnel can then clean or replace the cleaning roller 25 on the rotating roller 24 to keep the cleaning roller 25 clean and avoid affecting the cleaning effect of the cleaning roller 25.

[0049] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A device for measuring the accuracy of the inner and outer walls of steel pipes, characterized in that, include: A circular ring (1) is provided with several clamping plates (2) inside the circular ring (1). A rubber pad (3) is fixedly installed on the clamping plate (2). Several infrared rangefinders (38) are fixedly installed on the inner wall of the circular ring (1). A fixing frame (15) is fixedly installed on one side of the circular ring (1). A fixing block (16) is fixedly installed on one side of the fixing frame (15). A handle (17) is fixedly installed on the other side of the fixing frame (15). Several infrared rangefinders (39) are fixedly installed on the periphery of the fixing block (16). A drive assembly located within a ring (1) and used to drive a plurality of clamping plates (2) to move; A rotating rod (18) is rotatably mounted on one side of a fixed block (16). A sliding groove (19) is provided in the rotating rod (18). A telescopic rod (20) is slidably mounted in the sliding groove (19). The top end of the telescopic rod (20) passes through the top of the sliding groove (19) and is fixedly mounted with a lifting rod (21). A second drive motor (26) is fixedly mounted on one side of the lifting rod (21). The output end of the second drive motor (26) passes through the lifting rod (21) and is fixedly mounted with a rotating rod (23). A rotating roller (24) is sleeved on the rotating rod (23). A cleaning roller (25) is sleeved on the periphery of the rotating roller (24). An electric push rod (22) is fixedly mounted at the bottom of the sliding groove (19). The output end of the electric push rod (22) is fixedly connected to the telescopic rod (20). A power assembly located within a fixed block (16) and used to drive a rotating rod (18) to rotate; A fixing component is located inside the rotating rod (23) and is used to fix the rotating roller (24).

2. The device for measuring the accuracy of the inner and outer walls of steel pipes according to claim 1, characterized in that, The driving component includes: Several threaded rods (5) are fixedly mounted on several clamping plates (2). Guide rods (4) are fixedly mounted on both sides of the threaded rods (5) on the clamping plates (2). One end of the guide rod (4) passes through a ring (1). Several movable grooves (6) are opened in the ring (1). A bevel gear (7) is rotatably mounted in the movable groove (6). A limit ring (8) is fixedly mounted on the bevel gear (7). The top end of the threaded rod (5) passes through the corresponding bevel gear (7) and the ring (1) and extends to the outside. The ring (1) is located on several clamping plates (2). An annular groove (9) is provided on one side of the dry movable groove (6). A bevel gear two (10) is rotatably installed in the annular groove (9). A rotating groove (11) is provided in the ring (1) and on one side of the annular groove (9). A bevel gear three (12) that meshes with the bevel gear two (10) is rotatably installed in the rotating groove (11). A limit ring two (13) is fixedly installed on the bevel gear three (12). A drive motor one (14) is fixedly installed on the circumference of the ring (1). The output end of the drive motor one (14) passes through the circumference of the ring (1) and is coaxially connected to the bevel gear three (12).

3. The device for measuring the accuracy of the inner and outer walls of steel pipes according to claim 2, characterized in that, The threaded rod (5) is threadedly connected to the bevel gear (7), the threaded rod (5) is slidably connected to the ring (1), the guide rod (4) is slidably connected to the ring (1), the limiting ring (8) is rotatably connected to the ring (1), the bevel gear (7) meshes with the bevel gear (10), the limiting ring (13) is rotatably connected to the ring (1), and the output shaft of the drive motor (14) is rotatably connected to the ring (1).

4. The device for measuring the accuracy of the inner and outer walls of steel pipes according to claim 1, characterized in that, The power assembly includes: A drive rod (33) is rotatably mounted in a fixed block (16). One end of the drive rod (33) passes through the fixed block (16) and is coaxially connected to a rotating rod (18). A rotating groove (32) is provided in the fixed block (16) and on the periphery of the drive rod (33). A gear ring (34) is fixedly mounted on the periphery of the drive rod (33) and in the rotating groove (32). A first gear (35) is meshed on one side of the gear ring (34) and in the rotating groove (32). A drive groove (36) is provided in the fixed block (16) and on one side of the rotating groove (32). A drive motor (37) is fixedly mounted in the drive groove (36). The output end of the drive motor (37) passes through one side of the drive groove (36) and is coaxially connected to the first gear (35).

5. The device for measuring the accuracy of the inner and outer walls of steel pipes according to claim 4, characterized in that, The gear ring (34) is rotatably connected to the rotating groove (32), the first gear (35) is rotatably connected to the rotating groove (32), and the output shaft of the drive motor (37) is rotatably connected to the fixed block (16).

6. The device for measuring the accuracy of the inner and outer walls of steel pipes according to claim 1, characterized in that, The fixing component includes: A chute (27) is formed inside a rotating rod (23). A limiting block (28) is slidably installed inside the chute (27). One end of the limiting block (28) passes through the chute (27) and extends into the rotating roller (24). One side of the limiting block (28) passes through the chute (27) and extends to the outside, where a pressing block (29) is fixedly installed. A round rod (30) is fixedly installed at the bottom of the chute (27), and a spring (31) is sleeved on the round rod (30).

7. The device for measuring the accuracy of the inner and outer walls of steel pipes according to claim 6, characterized in that, One end of the limiting block (28) is inserted into the rotating roller (24), and one end of the limiting block (28) has an inclined structure. The two ends of the spring (31) are respectively tightly welded to the inner wall of the limiting block (28) and the slide groove (27).

8. The device for measuring the accuracy of the inner and outer walls of steel pipes according to claim 1, characterized in that, The output shaft of the second drive motor (26) is rotatably connected to the lifting rod (21), the rotating rod (23) is inserted into the rotating roller (24), and a storage battery (40) is fixedly installed in the fixed block (16). The storage battery (40) is electrically connected to several infrared rangefinders (38), several infrared rangefinders (39), the first drive motor (14), the second drive motor (26), the third drive motor (37), and the electric push rod (22).

9. A method for measuring the accuracy of the inner and outer walls of steel pipes, employing a device for measuring the accuracy of the inner and outer walls of steel pipes as described in any one of claims 1-8, characterized in that, Including the following methods: S1. In use, the operator can put the ring (1) on one end of the steel pipe, and then simply start the drive motor (14). The output shaft of the drive motor (14) will drive the bevel gear (12) to rotate. Under the action of meshing, the rotation of the bevel gear (12) will drive the bevel gear (10) to rotate. Under the action of meshing, the rotation of the bevel gear (10) will drive several bevel gears (7) to rotate. Under the action of the thread, the rotation of the bevel gears (7) will drive the threaded rod (5) to move. The movement will cause the clamping plate (2) to move. The movement of the clamping plate (2) will cause the two guide rods (4) to slide inside the ring (1). The two guide rods (4) can ensure the stability of the clamping plate (2) when it moves, so that several clamping plates (2) can move towards the periphery of the steel pipe at the same time until the rubber pad (3) on the clamping plate (2) is pressed against the periphery of the steel pipe, thereby fixing the ring (1) on the steel pipe. After the fixing is completed, the center of the ring (1) will automatically align with the center of the steel pipe, thereby realizing the rapid positioning of the measuring device and the steel pipe. S2. Personnel can start the electric push rod (22). The output shaft of the electric push rod (22) will drive the telescopic rod (20) to move upward. The upward movement of the telescopic rod (20) will drive the lifting rod (21) to move upward. The upward movement of the lifting rod (21) will drive the rotating roller (24) to move upward through the rotating rod (23) until the circumferential cleaning roller (25) of the rotating roller (24) abuts against the inner wall of the steel pipe. Then start the second drive motor (26). The output shaft of the second drive motor (26) will drive the rotating rod (23) to rotate. The rotation of the rotating rod (23) will drive the rotating roller (24) to rotate. The rotation of the rotating roller (24) will drive the... The cleaning roller (25) rotates, and at the same time the drive motor three (37) is started. The output shaft of the drive motor three (37) will drive the first gear (35) to rotate. Under the action of meshing, the rotation of the first gear (35) will drive the gear ring (34) to rotate. The rotation of the gear ring (34) will drive the drive rod (33) to rotate. The rotation of the drive rod (33) will drive the rotating rod (18) to rotate. The rotation of the rotating rod (18) will drive the cleaning roller (25) to rotate. Under the action of the cleaning roller (25) rotating, the impurities on the inner wall of the steel pipe can be cleaned, and the impurities can be avoided from affecting the accuracy of subsequent measurements. S3. Personnel can use several infrared rangefinders (38) to measure the outer diameter of the steel pipe and use several infrared rangefinders (39) to measure the diameter, roundness, and wall thickness uniformity of the steel pipe. After the measurement is completed, personnel can disassemble the entire device from the steel pipe. S4. Personnel can press the pressing block (29). The movement of the pressing block (29) will cause the limiting block (28) to move. The movement of the limiting block (28) will squeeze the spring (31) to contract until one end of the limiting block (28) moves out of the rotating roller (24). At this time, the limiting block (28) can release the rotating roller (24) from the rotating rod (23). Personnel can then clean or replace the cleaning roller (25) on the rotating roller (24) so ​​that the cleaning roller (25) can be kept clean and its cleaning effect can be avoided.

Images