Pipe inner diameter measuring device
Patent Information
- Application Number
- CN202522596125.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-12-08
AI Technical Summary
[0003]现有技术，Π尺测量内径，测量管材中部内径时，可能造成Π尺倾斜，结果误差增大，所以对于大管径管材需多人配合，存在精确度低及费时费力
[0020]The pipe inner diameter measuring device of this utility model uses a laser emitter to emit a laser beam onto the inner wall of the test piece, thereby forming a laser point on the inner wall of the test piece. A camera captures images of the laser point. As the laser emitter and camera rotate one revolution, the camera captures multiple images (the captured images can indicate whether they are images of defect locations or normal images). During data acquisition, images of defect locations are discarded, retaining only normal image data, thus determining the circumference of the test piece, and then calculating its diameter. Therefore, this application can eliminate abnormal data at defect locations (dimples or protrusions), thereby avoiding impact on the test structure and improving the accuracy of the test data. Furthermore, the height of the measuring component is adjustable, allowing for the measurement of test pieces of different specifications. This application enables rapid and accurate pipe inner diameter measurement, reducing measurement errors, improving measurement precision and accuracy, saving manpower and time; and it can measure pipes of various specifications.
Smart Images
Figure CN224861060U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe manufacturing technology, and in particular to a pipe inner diameter measuring device. Background Technology
[0002] During the pipe manufacturing process, a test piece needs to be cut and its inner diameter measured. Furthermore, test pieces of different specifications have varying diameters and heights, so the inner diameter value at half the length of the test piece needs to be collected for each measurement.
[0003] In current technology, when measuring the inner diameter of a pipe using a piezometer, the piezometer may tilt, increasing the error. Therefore, for large-diameter pipes, multiple people are required, resulting in low accuracy and being time-consuming and labor-intensive. In addition, if there are defects (protrusions or depressions) inside the pipe, the measurement error will be greatly increased. Utility Model Content
[0004] Therefore, the technical problem to be solved by this utility model is to overcome the above-mentioned problems existing in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model provides a pipe inner diameter measuring device, comprising:
[0006] Work platform;
[0007] A measuring assembly is mounted on top of the work platform. The measuring assembly includes a support, a height adjustment unit, a rotating unit, and a laser measuring unit. The height adjustment unit is connected to the top of the support. The laser measuring unit is rotatably connected to the top of the height adjustment unit via the rotating unit. The laser measuring unit includes a laser emitter and a camera located on one side of the laser emitter. The height adjustment unit is used to adjust the height of the laser measuring unit. The rotating unit is used to drive the laser measuring unit to rotate.
[0008] The specimen fixing assembly is used to fix the specimen to be tested on the working platform;
[0009] The measuring components are located inside the test piece; the laser beam from the laser emitter strikes the inner wall of the test piece to form a laser spot; and the camera captures the laser spot.
[0010] In one embodiment of this utility model, the application further includes a horizontal measuring element; the horizontal measuring element is disposed on the top of the laser emitter.
[0011] In one embodiment of the present invention, the measuring component further includes a height sensor for monitoring the height of the laser.
[0012] In one embodiment of the present invention, the measuring component further includes a light source; the light source is disposed on the working platform and is located on one side of the support.
[0013] In one embodiment of this utility model, the height adjustment part includes a first support rod, a second support rod, and a sleeve; the first support rod is connected to the top of the support; the second support rod is connected to the bottom of the laser measuring part; the sleeve is fitted onto the top of the first support rod and the bottom of the second support rod; a first tightening screw and a second tightening screw are connected to the side wall of the sleeve; the first tightening screw abuts against the side wall of the first support rod, and the second tightening screw abuts against the side wall of the second support rod.
[0014] In one embodiment of this utility model, at least two specimen fixing components are provided; along the circumferential direction, at least two specimen fixing components are evenly distributed.
[0015] In one embodiment of this utility model, the specimen fixing assembly includes a fixing nut, a screw, a movable head, and a clamp; the fixing nut is connected to the working platform; the screw is threadedly connected to the fixing nut; one end of the screw is movably connected to the movable head, and the movable head is connected to the clamp; the inner wall of the clamp is provided with an arc-shaped groove, which is in close contact with the outer wall of the specimen to be tested.
[0016] In one embodiment of this utility model, the support includes three brackets; the bottom of each bracket is threaded with an adjusting foot.
[0017] In one embodiment of this utility model, the rotating part includes a motor, a driving gear, and a driven gear; the motor is connected to one side of the height adjustment part; the output end of the motor is connected to the driving gear, and the driven gear meshes with the driving gear; the driven gear is coaxially connected to the laser measuring part, and the driven gear is rotatably connected to the top of the height adjustment part.
[0018] In one embodiment of the present invention, the measuring component further includes a rotating shaft; the rotating shaft is connected to the top of the height adjustment part, and the driven gear is rotatably connected to the rotating shaft through a bearing.
[0019] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:
[0020] The pipe inner diameter measuring device of this utility model uses a laser emitter to emit a laser beam onto the inner wall of the test piece, thereby forming a laser point on the inner wall of the test piece. A camera captures images of the laser point. As the laser emitter and camera rotate one revolution, the camera captures multiple images (the captured images can indicate whether they are images of defect locations or normal images). During data acquisition, images of defect locations are discarded, retaining only normal image data, thus determining the circumference of the test piece, and then calculating its diameter. Therefore, this application can eliminate abnormal data at defect locations (dimples or protrusions), thereby avoiding impact on the test structure and improving the accuracy of the test data. Furthermore, the height of the measuring component is adjustable, allowing for the measurement of test pieces of different specifications. This application enables rapid and accurate pipe inner diameter measurement, reducing measurement errors, improving measurement precision and accuracy, saving manpower and time; and it can measure pipes of various specifications. Attached Figure Description
[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:
[0022] Figure 1 This is a front view of a pipe inner diameter measuring device according to a preferred embodiment of the present invention;
[0023] Figure 2 yes Figure 1 Side view of the pipe inner diameter measuring device shown (with specimen fixing assembly removed);
[0024] Figure 3 yes Figure 1 Top view of the pipe inner diameter measuring device shown (measuring components removed);
[0025] Explanation of reference numerals in the accompanying drawings: 100, working platform;
[0026] 200. Measuring component; 210. Support; 211. Bracket; 212. Adjustable foot; 220. Height adjustment part; 221. First support rod; 222. Second support rod; 223. Sleeve; 224. First tightening screw; 225. Second tightening screw; 230. Rotating part; 231. Motor; 232. Drive gear; 233. Driven gear; 234. Rotating shaft; 240. Laser measuring part; 241. Laser emitter; 242. Camera; 243. Laser emission port; 250. Infrared emitting tube; 260. Receiving tube; 270. Light source;
[0027] 300. Specimen fixing assembly; 310. Fixing nut; 320. Screw; 330. Moving head; 340. Clamp;
[0028] 400. Test piece;
[0029] 500. Horizontal measuring component. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.
[0031] Reference Figures 1-3 As shown, this utility model embodiment provides a pipe inner diameter measuring device, including:
[0032] Work platform 100;
[0033] A measuring assembly 200 is mounted on top of the work platform 100. The measuring assembly 200 includes a support 210, a height adjustment unit 220, a rotating unit 230, and a laser measuring unit 240. The height adjustment unit 220 is connected to the top of the support 210. The laser measuring unit 240 is rotatably connected to the top of the height adjustment unit 220 via the rotating unit 230. The laser measuring unit 240 includes a laser emitter 241 and a camera 242 located on one side of the laser emitter 241. The height adjustment unit 220 is used to adjust the height of the laser measuring unit 240. The rotating unit 230 is used to drive the laser measuring unit 240 to rotate. The laser measuring unit 240 also includes a housing, a main board, a battery board, a switch control, and a digital display panel. The housing can be made of plastic.
[0034] The specimen fixing assembly 300 is used to fix the specimen 400 to be tested on the working platform 100;
[0035] The measuring component 200 is located within the test piece 400; the laser beam from the laser emitter 241 strikes the inner wall of the test piece 400, forming laser points; the camera 242 captures the laser points. The laser emitter 241 and the camera 242 can rotate 360 degrees to acquire multiple images of the laser points. These images are then processed in the background to determine the inner diameter of the test piece 400.
[0036] Specifically, in this embodiment, the laser emitter 241 emits a laser beam onto the inner wall of the test piece 400, thereby forming a laser point on the inner wall of the test piece 400. The camera 242 captures images of the laser point. As the laser emitter 241 and camera 242 rotate one revolution, the camera 242 captures multiple images (the captured images can indicate whether they are images of defect locations or normal images). During data acquisition, images of defect locations are discarded, retaining only normal image data, thus determining the perimeter of the test piece 400, and then calculating its diameter. Therefore, this application can eliminate abnormal data at defect locations (depressions or protrusions), thereby avoiding impact on the test structure and improving the accuracy of the test data. Furthermore, the height of the measuring component 200 in this application is adjustable, enabling measurement of test pieces 400 of different specifications. This application enables rapid and accurate measurement of pipe inner diameter, reducing measurement errors, improving measurement precision, and saving manpower and time; it can also measure pipes of various specifications.
[0037] Furthermore, this application also includes a leveling element 500; the leveling element 500 is disposed on top of the laser emitter 241. In some embodiments, the leveling element 500 may be a spirit level for easy leveling.
[0038] Specifically, in this embodiment, the level measuring device 500 can monitor whether the laser emitter 241 is in a horizontal state before the test. If it is not in a horizontal state, the adjusting foot 212 can be adjusted until it is horizontal.
[0039] Furthermore, the measurement assembly 200 also includes a height sensor for monitoring the height of the laser. In some embodiments, the height sensor may be an infrared ranging sensor, which includes an infrared emitting tube 250 and a receiving tube 260; one of the infrared emitting tube 250 and the receiving tube 260 is connected to the working platform 100, and the other is connected to the laser emitter 241 and located on one side of the laser emission port 243 of the laser emitter 241.
[0040] Specifically, during the testing process, it is necessary to measure the diameter at half the height of the test piece 400. Therefore, this embodiment can monitor the height of the laser emitter 241 in real time, thereby adjusting the laser emitter 241 to the corresponding height according to the length of the test piece 400 before the test, so that the laser beam emitted by the laser emitter 241 hits the test piece 400 at half its height, which facilitates quick adjustment and height determination.
[0041] Furthermore, the measuring component 200 also includes a light source 270; the light source 270 is disposed on the working platform 100 and is located on one side of the support 210.
[0042] Specifically, this embodiment can provide ambient light for camera 242 to capture, thereby improving the shooting effect.
[0043] Furthermore, the height adjustment unit 220 includes a first support rod 221, a second support rod 222, and a sleeve 223; the first support rod 221 is connected to the top of the support 210; the second support rod 222 is connected to the bottom of the laser measuring unit 240; the sleeve 223 is fitted onto the top of the first support rod 221 and the bottom of the second support rod 222; a first tightening screw 224 and a second tightening screw 225 are connected to the side wall of the sleeve 223; the first tightening screw 224 abuts against the side wall of the first support rod 221, and the second tightening screw 225 abuts against the side wall of the second support rod 222.
[0044] Specifically, in this embodiment, the sleeve 223 is sleeved on the first support rod 221 and the second support rod 222. The sleeve 223 is connected to the first support rod 221 by the first tightening screw 224 and to the second support rod 222 by the second tightening screw 225, thereby enabling adjustment of any height position.
[0045] Furthermore, at least two specimen fixing components 300 are provided; along the circumferential direction, at least two specimen fixing components 300 are evenly distributed.
[0046] Specifically, this embodiment can stably and reliably fix the test piece 400 on the working platform 100, thereby avoiding the movement of the test piece 400 during the test and affecting the measurement, thus improving the measurement accuracy and precision.
[0047] Furthermore, the specimen fixing assembly 300 includes a fixing nut 310, a screw 320, a movable head 330, and a clamp 340; the fixing nut 310 is connected to the working platform 100; the screw 320 is threadedly connected to the fixing nut 310; one end of the screw 320 is movably connected to the movable head 330, and the movable head 330 is connected to the clamp 340; the inner wall of the clamp 340 is provided with an arc-shaped groove, which is in close contact with the outer wall of the specimen 400 to be tested.
[0048] Specifically, in this embodiment, the end of the screw 320 extends and retracts when the fixing nut 310 rotates. Since the end of the screw 320 is movably connected to the movable head 330, the movable head 330 will extend and retract with the screw 320 without rotating, thereby causing the clamp 340 to move closer to or further away from the test piece 400, thereby clamping and locking or releasing the test piece 400. The structure is simple and easy to operate.
[0049] Furthermore, the support 210 includes three brackets 211; the bottom of each bracket 211 is threaded with an adjusting foot 212.
[0050] Specifically, in this embodiment, the level of the measuring component 200 is adjusted by adjusting the adjusting foot 212, which is convenient and quick to operate.
[0051] Furthermore, the rotating part 230 includes a motor 231, a driving gear 232, and a driven gear 233; the motor 231 is connected to one side of the height adjustment part 220; the output end of the motor 231 is connected to the driving gear 232, and the driven gear 233 meshes with the driving gear 232; the driven gear 233 is coaxially connected to the laser measuring part 240, and the driven gear 233 is rotatably connected to the top of the height adjustment part 220.
[0052] Specifically, this application adopts a gear transmission structure, has a long service life, and can adapt to continuous operation in industrial environments with proper lubrication and protection.
[0053] Furthermore, the measuring assembly 200 also includes a rotating shaft 234; the rotating shaft 234 is connected to the top of the height adjustment section 220, and the driven gear 233 is rotatably connected to the rotating shaft 234 through a bearing.
[0054] Specifically, this embodiment ensures the connection stability and reliability of the entire measurement component 200.
[0055] This application simplifies operation while ensuring accuracy; it solves the problems of excessive manual labor and large human error in the measurement process; it solves the problem of low accuracy; and it solves the problem of unidentifiable defects leading to data distortion.
[0056] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. 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 list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A pipe inner diameter measuring device, characterized in that: include: Work platform; A measuring component is disposed on the top of the working platform; the measuring component includes a support, a height adjustment part, a rotating part, and a laser measuring part; the height adjustment part is connected to the top of the support; the laser measuring part is rotatably connected to the top of the height adjustment part via the rotating part; the laser measuring part includes a laser emitter and a camera disposed on one side of the laser emitter; the height adjustment part is used to adjust the height of the laser measuring part; the rotating part is used to drive the laser measuring part to rotate. The specimen fixing assembly is used to fix the specimen to be tested on the working platform; The measuring component is disposed in the test piece; the laser beam of the laser emitter is projected onto the inner wall of the test piece to form a laser spot; and the camera captures the laser spot.
2. The pipe inner diameter measuring device according to claim 1, characterized in that: It also includes a horizontal measuring element; the horizontal measuring element is located on top of the laser emitter.
3. The pipe inner diameter measuring device according to claim 2, characterized in that: The measurement component also includes a height sensor for monitoring the height of the laser.
4. The pipe inner diameter measuring device according to claim 1, characterized in that: The measuring component also includes a light source; the light source is disposed on the working platform and is located on one side of the support.
5. The pipe inner diameter measuring device according to claim 1, characterized in that: The height adjustment unit includes a first support rod, a second support rod, and a sleeve; the first support rod is connected to the top of the support; the second support rod is connected to the bottom of the laser measurement unit; the sleeve is fitted onto the top of the first support rod and the bottom of the second support rod; a first tightening screw and a second tightening screw are connected to the side wall of the sleeve; the first tightening screw abuts against the side wall of the first support rod, and the second tightening screw abuts against the side wall of the second support rod.
6. The pipe inner diameter measuring device according to claim 1, characterized in that: At least two specimen fixing components are provided; at least two specimen fixing components are evenly distributed along the circumferential direction.
7. The pipe inner diameter measuring device according to claim 6, characterized in that: The specimen fixing assembly includes a fixing nut, a screw, a movable head, and a clamp; the fixing nut is connected to the working platform; the screw is threadedly connected to the fixing nut; one end of the screw is movably connected to the movable head, and the movable head is connected to the clamp; the inner wall of the clamp is provided with an arc-shaped groove, and the arc-shaped groove is in close contact with the outer wall of the specimen to be tested.
8. The pipe inner diameter measuring device according to claim 1, characterized in that: The support includes three brackets; each bracket has an adjusting foot threadedly connected to its bottom.
9. The pipe inner diameter measuring device according to claim 1, characterized in that: The rotating part includes a motor, a driving gear, and a driven gear; the motor is connected to one side of the height adjustment part; the output end of the motor is connected to the driving gear, and the driven gear meshes with the driving gear; the driven gear is coaxially connected to the laser measuring part, and the driven gear is rotatably connected to the top of the height adjustment part.
10. The pipe inner diameter measuring device according to claim 9, characterized in that: The measuring component also includes a rotating shaft; the rotating shaft is connected to the top of the height adjustment unit, and the driven gear is rotatably connected to the rotating shaft via a bearing.