Cast pipe roundness detection device
By combining a servo motor-driven lead screw system with a laser rangefinder, the roundness of cast pipes is automatically detected, solving the problem of low efficiency in the existing technology for detecting the roundness of cast pipes and achieving fast, simple, and efficient detection results.
Patent Information
- Application Number
- CN202423183884.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing methods for testing the roundness of cast iron pipes are inefficient and make it difficult to quickly and accurately test the roundness of larger cast iron pipes, resulting in difficult operation and high labor costs.
A servo motor-driven lead screw system and a laser rangefinder are used in conjunction to achieve automated roundness detection of cast pipes. By adjusting the position of the cast pipe through multi-axis motion and rotating the laser rangefinder for detection, roundness data of the cast pipe can be obtained quickly.
It enables rapid, simple, and efficient roundness inspection of larger cast iron pipes, reducing manual operation costs and improving inspection efficiency.
Smart Images
Figure CN223500364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of roundness detection devices, specifically a roundness detection device for cast pipes. Background Technology
[0002] Cast iron pipes produced by centrifugal casting require that the spigot end of one pipe can be fully inserted into the socket end of another pipe, forming a transport pipeline. During the production process, the roundness of the pipes must be inspected to ensure that the roundness of the pipes leaving the factory is qualified, thus ensuring that the internal dimensions of the socket of the produced pipe products allow the spigot to enter.
[0003] Existing measurement methods mostly involve manual measurement with rulers and gauges or molds, but these methods are inefficient and difficult to use for large cast iron pipes.
[0004] To address the above problems, this utility model provides a device for detecting the roundness of cast pipes. Utility Model Content
[0005] The purpose of this invention is to provide a roundness detection device for cast iron pipes, which can quickly detect the roundness of larger cast iron pipes. It is simple to operate, highly efficient, and saves manpower, thereby solving the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a pipe roundness detection device, comprising a base, a rectangular frame at the top of the base end, a first lead screw and a guide rod respectively disposed at the two ends of the rectangular frame, a first servo motor disposed at the end of the first lead screw, a connecting plate disposed inside the rectangular frame, a second lead screw disposed inside the lower end of the connecting plate, a second servo motor disposed at the end of the second lead screw, a support ring fixedly disposed at the upper end of the connecting plate, a first laser rangefinder fixedly disposed at the upper, lower, left and right ends of the inner side of the support ring, an L-shaped plate fixedly disposed on the side of the connecting plate, a rotating rod disposed inside the upper end of the L-shaped plate, a third servo motor for driving the rotating rod to rotate disposed on the L-shaped plate, a slider disposed inside the rotating rod, a third lead screw passing through the slider, a fourth servo motor disposed at the end of the third lead screw, and a second laser rangefinder fixedly disposed on the side of the slider.
[0007] Furthermore, rectangular frames are symmetrically fixed on both sides of the upper surface of the base. The first lead screw and the guide rod are respectively set in the corresponding rectangular frames. The upper and lower ends of the guide rod are fixedly connected to the inner top and inner bottom surfaces of the rectangular frames. The first servo motor is fixedly installed on the upper end of the corresponding rectangular frame and its output end extends downward and is fixedly connected to the upper end of the first lead screw. The outer side of the lower end of the first lead screw is rotatably connected to the inner bottom of the rectangular frame through a bearing. The first lead screw is threadedly connected to the inside of the rectangular frame, and the guide rod is slidably connected to the inside of the rectangular frame.
[0008] Furthermore, the second servo motor is fixedly installed on the inner side wall of the rectangular frame and its output end is fixedly connected to the end of the second lead screw. The outer side of the second lead screw away from the second servo motor is rotatably connected to the inner side wall of the rectangular frame through a bearing. The second lead screw is threadedly connected to the inside of the connecting plate, and the outer side of the lower end of the connecting plate is slidably connected to the inner side of the rectangular frame.
[0009] Furthermore, the outer side of the rotating rod end is rotatably connected to the inner upper end of the L-shaped plate via a bearing. The third servo motor is fixedly installed on the outer wall of the L-shaped plate, and its output end extends and is fixedly installed with a second gear. The outer side of the rotating rod end is also fixedly installed with a first gear. The first gear and the second gear mesh with each other, and the center line of the rotating rod coincides with the center line of the support ring.
[0010] Furthermore, a groove is provided inside the rotating rod, and the slider is slidably connected to the inner surface of the groove. The fourth servo motor is fixedly installed on the side of the end of the rotating rod, and its output end extends and is fixedly connected to the end of the third lead screw. The outer side of the third lead screw away from the fourth servo motor is rotatably connected to the side wall of the groove through a bearing, and the third lead screw is threadedly connected to the inside of the slider.
[0011] Furthermore, the base is fixedly mounted on the mounting surface by bolts.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] This utility model provides a roundness detection device for cast pipes. During operation, the cast pipe is placed on a support roller, and a base is placed next to the support roller device, allowing a rotating rod to extend into the interior of the cast pipe. The cast pipe is positioned outside the rotating rod and between four first laser rangefinders. A first servo motor drives a first lead screw to rotate, causing a rectangular frame to rise and fall vertically. A second servo motor drives a second lead screw to rotate, causing a connecting plate to reciprocate horizontally. By adjusting the support ring horizontally (left-right) and vertically (up-down), and coordinating with the four first laser rangefinders, the position of the support ring is adjusted so that the cast pipe axis coincides with the center line of the support ring. At this point, the rotating rod is positioned on the cast pipe axis. A third servo motor then drives the rotating rod to rotate, causing the second laser rangefinder to rotate and detect the inner wall of the cast pipe. Simultaneously, a fourth servo motor drives the third lead screw to rotate, causing the second laser rangefinder to move linearly along the cast pipe axis via a slider, performing rotational detection at different positions on the inner wall of the cast pipe. Finally, the roundness of the cast pipe is analyzed based on the acquired data. This design allows for rapid roundness detection of larger cast pipes, is simple to operate, highly efficient, and saves labor. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the rotating rod in this utility model;
[0016] Figure 3 This is a schematic diagram of the internal structure of the rectangular frame in this utility model;
[0017] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle.
[0018] In the diagram: 1. Base; 2. Rectangular frame; 3. First lead screw; 4. Guide rod; 5. First servo motor; 6. Rectangular frame; 7. Second lead screw; 8. Second servo motor; 9. Connecting plate; 10. Support ring; 11. First laser rangefinder; 12. L-shaped plate; 13. Rotating rod; 14. First gear; 15. Second gear; 16. Third servo motor; 17. Slide groove; 18. Third lead screw; 19. Fourth servo motor; 20. Slider; 21. Second laser rangefinder. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] To address the technical challenges of effective detection, such as... Figure 1-4 As shown, the following preferred technical solutions are provided:
[0021] A pipe roundness detection device includes a base 1, a rectangular frame 6 at the top of the end of the base 1, a first lead screw 3 and a guide rod 4 respectively at the two ends of the rectangular frame 6, a first servo motor 5 at the end of the first lead screw 3, a connecting plate 9 inside the rectangular frame 6, a second lead screw 7 inside the lower end of the connecting plate 9, a second servo motor 8 at the end of the second lead screw 7, a support ring 10 fixed at the upper end of the connecting plate 9, a first laser rangefinder 11 fixed at the upper, lower, left and right ends of the inner side of the support ring 10, an L-shaped plate 12 fixed on the side of the connecting plate 9, a rotating rod 13 inside the upper end of the L-shaped plate 12, a third servo motor 16 for driving the rotating rod 13 to rotate on the L-shaped plate 12, a slider 20 inside the rotating rod 13, a third lead screw 18 passing through the slider 20, a fourth servo motor 19 at the end of the third lead screw 18, and a second laser rangefinder 21 fixed on the side of the slider 20.
[0022] Specifically, during operation, the cast pipe is placed on the idler roller, and then the base 1 is placed next to the idler roller device, so that the rotating rod 13 extends into the inside of the cast pipe, that is, the cast pipe is sleeved on the outside of the rotating rod 13 and the cast pipe is located between the four first laser rangefinders 11. Then, the first servo motor 5 drives the first lead screw 3 to rotate, driving the rectangular frame 6 to rise and fall vertically. The second servo motor 8 drives the second lead screw 7 to rotate, driving the connecting plate 9 to move horizontally in a reciprocating linear motion. By adjusting the support ring 10 horizontally to the left and right and vertically up and down, and with the detection of the four first laser rangefinders 11, the position of the support ring 10 is adjusted so that the axis of the cast pipe coincides with the center line of the support ring 10. At this time, the rotating rod 13 is located on the axis of the cast pipe. Then, the third servo motor 16 drives the rotating rod 13 to rotate, driving the second laser rangefinder 21 to rotate and detect the inner wall of the cast pipe. At the same time, the fourth servo motor drive 19 drives the third lead screw 18 to rotate, driving the second laser rangefinder 21 to move linearly along the axis of the cast pipe through the slider 20, and rotating and detecting different positions of the inner wall of the cast pipe. Finally, the roundness of the cast pipe is analyzed based on the acquired data. The purpose of this design is to quickly check the roundness of larger cast pipes, which is simple to operate, highly efficient, and saves labor.
[0023] Furthermore, such as Figure 1-3 As shown, the following preferred technical solutions are provided:
[0024] A rectangular frame 2 is symmetrically fixed on both sides of the upper surface of the base 1. The first lead screw 3 and the guide rod 4 are respectively set in the corresponding rectangular frame 2. The upper and lower ends of the guide rod 4 are fixedly connected to the inner top surface and inner bottom surface of the rectangular frame 2. The first servo motor 5 is fixedly installed on the upper end of the corresponding rectangular frame 2 and its output end extends downward and is fixedly connected to the upper end of the first lead screw 3. The outer side of the lower end of the first lead screw 3 is rotatably connected to the inner bottom end of the rectangular frame 2 through a bearing. The first lead screw 3 is threadedly connected to the inside of the rectangular frame 6, and the guide rod 4 is slidably connected to the inside of the rectangular frame 6. The purpose of this design is that the first servo motor 5 drives the first lead screw 3 to rotate, thereby driving the rectangular frame 6 to rise and fall vertically.
[0025] Furthermore, such as Figure 1 and Figure 3 As shown, the following preferred technical solutions are provided:
[0026] The second servo motor 8 is fixedly installed on the inner side wall of the rectangular frame 6 and its output end is fixedly connected to the end of the second lead screw 7. The outer side of the second lead screw 7 away from the second servo motor 8 is rotatably connected to the inner side wall of the rectangular frame 6 through a bearing. The second lead screw 7 is threadedly connected to the inner side of the connecting plate 9. The outer side of the lower end of the connecting plate 9 is slidably connected to the inner side of the rectangular frame 6. The purpose of this design is that the second servo motor 8 drives the second lead screw 7 to rotate, thereby driving the connecting plate 9 to reciprocate linearly in the horizontal direction.
[0027] Furthermore, such as Figure 1 and Figure 2As shown, the following preferred technical solutions are provided:
[0028] The outer end of the rotating rod 13 is rotatably connected to the inner upper end of the L-shaped plate 12 via a bearing. The third servo motor 16 is fixedly installed on the outer wall of the L-shaped plate 12, and its output end extends and is fixedly installed with a second gear 15. The outer end of the rotating rod 13 is also fixedly installed with a first gear 14. The first gear 14 and the second gear 15 mesh with each other. The center line of the rotating rod 13 coincides with the center line of the support ring 10. The purpose of this design is that the third servo motor 16 drives the second gear 15 to rotate, and through meshing with the first gear 14, drives the rotating rod 13 to rotate. The rotating rod 13 is located at the center of the support ring 10 for easy subsequent testing.
[0029] Furthermore, such as Figure 1-4 As shown, the following preferred technical solutions are provided:
[0030] The rotating rod 13 has a groove 17 inside, and the slider 20 is slidably connected to the inner surface of the groove 17. The fourth servo motor 19 is fixedly installed on the side of the end of the rotating rod 13, and its output end extends and is fixedly connected to the end of the third lead screw 18. The outer side of the third lead screw 18 away from the fourth servo motor 19 is rotatably connected to the side wall of the groove 17 through a bearing. The third lead screw 18 is threadedly connected to the slider 20. The purpose of this design is that the fourth servo motor 19 drives the third lead screw 18 to rotate, thereby causing the slider 20 to reciprocate linearly along the axis of the rotating rod 13.
[0031] Furthermore, such as Figure 1 As shown, the following preferred technical solutions are provided:
[0032] The base 1 is fixedly mounted on the mounting surface by bolts. The purpose of this design is to fix the base 1.
[0033] In summary: During operation, the casting pipe is placed on the idler roller, and then the base 1 is placed next to the idler roller device, so that the rotating rod 13 extends into the inside of the casting pipe, that is, the casting pipe is sleeved on the outside of the rotating rod 13 and the casting pipe is located between the four first laser rangefinders 11. Then, the first servo motor 5 drives the first lead screw 3 to rotate, driving the rectangular frame 6 to rise and fall vertically. The second servo motor 8 drives the second lead screw 7 to rotate, driving the connecting plate 9 to move horizontally in a reciprocating linear motion. By adjusting the support ring 10 horizontally to the left and right and vertically to the right and down, and coordinating with the four first laser rangefinders 11, the system can achieve the desired effect. The optical rangefinder 11 detects and adjusts the position of the support ring 10 so that the axis of the cast pipe coincides with the center line of the support ring 10. At this time, the rotating rod 13 is located on the axis of the cast pipe. Then, the third servo motor 16 drives the rotating rod 13 to rotate, which drives the second laser rangefinder 21 to rotate and detect the inner wall of the cast pipe. At the same time, the fourth servo motor drive 19 drives the third lead screw 18 to rotate, which drives the second laser rangefinder 21 to move linearly along the axis of the cast pipe through the slider 20, and rotates and detects different positions on the inner wall of the cast pipe. Finally, the roundness of the cast pipe is analyzed based on the acquired data. The purpose of this design is to quickly detect the roundness of larger cast pipes, which is simple to operate, highly efficient, and saves labor.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for detecting the roundness of cast pipes, characterized in that: The system includes a base (1), a rectangular frame (6) is provided above the end of the base (1), a first lead screw (3) and a guide rod (4) are respectively provided inside the two ends of the rectangular frame (6), a first servo motor (5) is provided at the end of the first lead screw (3), a connecting plate (9) is provided inside the rectangular frame (6), a second lead screw (7) is provided inside the lower end of the connecting plate (9), a second servo motor (8) is provided at the end of the second lead screw (7), and a support ring (10) is fixedly provided at the upper end of the connecting plate (9). The support ring (10) has an inner upper, lower, left and right side. A first laser rangefinder (11) is fixedly mounted on the right end. An L-shaped plate (12) is fixedly mounted on the side of the connecting plate (9). A rotating rod (13) is installed inside the upper end of the L-shaped plate (12). A third servo motor (16) for driving the rotating rod (13) to rotate is installed on the L-shaped plate (12). A slider (20) is installed inside the rotating rod (13). A third lead screw (18) passes through the slider (20). A fourth servo motor (19) is installed at the end of the third lead screw (18). A second laser rangefinder (21) is fixedly mounted on the side of the slider (20).
2. The roundness detection device for cast pipes according to claim 1, characterized in that: The base (1) has rectangular frames (2) symmetrically fixed on both sides of its upper surface. The first lead screw (3) and the guide rod (4) are respectively set in the corresponding rectangular frames (2). The upper and lower ends of the guide rod (4) are fixedly connected to the inner top surface and inner bottom surface of the rectangular frame (2). The first servo motor (5) is fixedly installed on the upper end of the corresponding rectangular frame (2) and its output end extends downward and is fixedly connected to the upper end of the first lead screw (3). The lower outer side of the first lead screw (3) is rotatably connected to the bottom of the rectangular frame (2) through a bearing. The first lead screw (3) is threadedly connected to the inside of the rectangular frame (6), and the guide rod (4) is slidably connected to the inside of the rectangular frame (6).
3. The roundness detection device for cast pipes according to claim 1, characterized in that: The second servo motor (8) is fixedly installed on the inner side wall of the rectangular frame (6) and its output end is fixedly connected to the end of the second lead screw (7). The outer side of the second lead screw (7) away from the second servo motor (8) is rotatably connected to the inner side wall of the rectangular frame (6) through a bearing. The second lead screw (7) is threadedly connected to the inner side of the connecting plate (9). The outer side of the lower end of the connecting plate (9) is slidably connected to the inner side of the rectangular frame (6).
4. The roundness detection device for cast pipes according to claim 1, characterized in that: The outer side of the end of the rotating rod (13) is rotatably connected to the inner side of the upper end of the L-shaped plate (12) through a bearing. The third servo motor (16) is fixedly installed on the outer wall of the L-shaped plate (12) and the output end extends and is fixedly installed with a second gear (15). The outer side of the end of the rotating rod (13) is also fixedly installed with a first gear (14). The first gear (14) and the second gear (15) mesh with each other. The center line of the rotating rod (13) coincides with the center line of the support ring (10).
5. The roundness detection device for cast pipes according to claim 1, characterized in that: The rotating rod (13) has a groove (17) inside. The slider (20) is slidably connected to the inner surface of the groove (17). The fourth servo motor (19) is fixedly installed on the side of the end of the rotating rod (13) and its output end extends and is fixedly connected to the end of the third lead screw (18). The outer side of the third lead screw (18) away from the fourth servo motor (19) is rotatably connected to the side wall of the groove (17) through a bearing. The third lead screw (18) is threadedly connected to the inside of the slider (20).
6. The roundness detection device for cast pipes according to claim 1, characterized in that: The base (1) is fixedly installed on the mounting surface by bolts.