A steel pipe outer diameter detection device

Abstract

The utility model relates to steel pipe detection technical field, specifically disclose a kind of steel pipe outside diameter detection device, including frame, the inside of frame is provided with measuring mechanism by first drive mechanism, is provided with fixed mechanism by second drive mechanism, the measuring mechanism includes slip ring, the inner wall of the slip ring is rotatably connected with swivel joint by bearing, the outer wall of the swivel joint is fixedly connected with second gear, the outer wall of the slip ring is installed with first servo motor, the output of first servo motor extends to the other side of slip ring and is fixedly connected with the first gear meshing connection with second gear, the outer wall of the swivel joint is fixedly connected with two support plates, first threaded rod is rotatably connected between two support plates, first limit rod is fixedly connected between two support plates, the utility model realizes the automation of steel pipe outside diameter, multipoint measurement, and can automatic centering clamping, effectively improve the efficiency and accuracy of measurement.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe testing technology, and specifically discloses a steel pipe outer diameter testing device. Background Technology

[0002] Steel pipes are tubular steel materials with a hollow cross-section, whose length is much greater than their diameter or circumference. Steel pipes are not only used for transporting fluids and powdery solids, exchanging heat energy, and manufacturing mechanical parts and containers, but they are also an economical steel material. Using steel pipes to manufacture building structural frames, columns, and mechanical supports can reduce weight and save 20-40% of metal. Moreover, it can realize factory-based mechanized construction. Using steel pipes to manufacture highway bridges can not only save steel and simplify construction, but also greatly reduce the area to be coated with protective layer, saving investment and maintenance costs.

[0003] Currently, in the processing of bearing steel pipes, it is usually necessary to measure the outer diameter of the pipes. The main methods for measuring the outer diameter include traditional manual measurement and automated measurement. Traditional manual measurement typically uses tools such as calipers and micrometers, with operators taking multiple measurements at different positions and in different circumferential directions and then averaging the results. This method is not only inefficient and labor-intensive, but also highly susceptible to errors introduced by human factors (such as measurement force and viewing angle deviation), leading to insufficient reliability of the measurement results and making it difficult to meet the needs of modern mass production.

[0004] While some existing automated testing equipment has improved efficiency to some extent, some devices can only measure a single fixed point on the steel pipe, failing to comprehensively reflect whether there is an ellipticity deviation in the same cross-section, and also unable to conveniently perform multi-point scanning along the axial direction. Therefore, a steel pipe outer diameter testing device is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a steel pipe outer diameter detection device, which realizes automated, multi-point measurement of the outer diameter of steel pipes and can automatically center and clamp, effectively improving the efficiency and accuracy of measurement.

[0006] This utility model is implemented as follows: a steel pipe outer diameter detection device includes a frame. Inside the frame, a measuring mechanism is arranged via a first driving mechanism, and a fixing mechanism is arranged via a second driving mechanism. The measuring mechanism includes a slip ring. A rotating ring is rotatably connected to the inner wall of the slip ring via a bearing. A second gear is fixedly connected to the outer wall of the rotating ring. A first servo motor is mounted on the outer wall of the slip ring. The output end of the first servo motor extends to the other side of the slip ring and is fixedly connected to a first gear meshing with the second gear. Two support plates are fixedly connected to the outer wall of the rotating ring. A first threaded rod is rotatably connected between the two support plates. A first limiting rod is fixedly connected between the two support plates. Both ends of the outer wall of the first threaded rod are threadedly connected to movable plates that are slidably connected to the first limiting rod. Two measuring plates are arranged between the two movable plates. Two connecting shafts that are slidably connected to the movable plates are fixedly connected to the outer walls of the two measuring plates facing away from each other. Springs are sleeved on the outer walls of the multiple connecting shafts located between the measuring plates and the movable plates. A measuring ruler is fixedly connected to the outer wall of one measuring plate, and a measuring pointer is fixedly connected to the outer wall of the other measuring plate.

[0007] As a preferred embodiment of the steel pipe outer diameter detection device of this utility model, the fixing mechanism includes two sliding plates. A hexagonal shaft is rotatably connected to the lower side of the inner wall of the frame. A third servo motor with its output end fixedly connected to the hexagonal shaft is installed on the outer wall of the frame. A sleeve that is rotatably connected to the hexagonal shaft is passed through the outer wall of the sliding plate by a bearing. A second bevel gear is fixedly connected to the outer wall of the sleeve. A third threaded rod is rotatably connected to the outer wall of the sliding plate by two ear plates. A first bevel gear that meshes with the second bevel gear is fixedly connected to the lower end of the outer wall of the third threaded rod. Both ends of the outer wall of the third threaded rod are threadedly connected to L-shaped clamps extending to the other side of the sliding plate.

[0008] As a preferred embodiment of the steel pipe outer diameter detection device of this utility model, the first driving mechanism includes a second threaded rod rotatably connected to the upper side of the inner wall of the frame, the slip ring being threadedly connected to the second threaded rod, a second servo motor with its output end fixedly connected to the second threaded rod being installed on the outer wall of the frame, and two support rods slidably connected to the slip ring being fixedly connected to the upper side of the inner wall of the frame.

[0009] In a preferred embodiment of the steel pipe outer diameter detection device of this utility model, the second driving mechanism includes a fourth threaded rod rotatably connected to the lower side of the inner wall of the frame, a fourth servo motor whose output end is fixedly connected to the fourth threaded rod is installed on the outer wall of the frame, two sliding plates are respectively threaded to the two ends of the fourth threaded rod, and a second limiting rod that is slidably connected to the two sliding plates is fixedly connected to the lower side of the inner wall of the frame.

[0010] In a preferred embodiment of the steel pipe outer diameter detection device of this utility model, the threads at both ends of the outer wall of the first threaded rod are in opposite directions.

[0011] In a preferred embodiment of the steel pipe outer diameter detection device of this utility model, the threads at both ends of the outer wall of the fourth threaded rod are opposite in direction.

[0012] In a preferred embodiment of the steel pipe outer diameter detection device of this utility model, the threads on the outer walls of the two third threaded rods are in opposite directions.

[0013] As a preferred embodiment of the steel pipe outer diameter detection device of this utility model, a controller is provided on the outer wall of the frame, and the first servo motor, the second servo motor, the third servo motor and the fourth servo motor are all electrically connected to the controller.

[0014] The beneficial effects of this utility model are: 1. Through the coordinated action of the first driving mechanism and the measuring mechanism, the steel pipe can be automatically moved along the axial direction and its outer diameter can be measured at different positions. At the same time, the servo motor in the measuring mechanism drives the rotating ring and measuring plate to rotate circumferentially along the steel pipe. Combined with the spring adaptive clamping structure, measurements can be taken at multiple angles on the same cross section of the steel pipe, effectively obtaining outer diameter data and calculating the average value, which significantly improves the comprehensiveness and accuracy of the measurement.

[0015] 2. The hexagonal shaft and sleeve are driven by a third servo motor, which drives the symmetrically arranged L-shaped clamps to move synchronously relative to each other. This can automatically center and clamp both ends of the steel pipe, ensuring that the steel pipe axis coincides with the measuring ring axis. This not only ensures the consistency of the measurement reference, but also adapts to the fixing requirements of steel pipes of different lengths, improving the versatility and operational efficiency of the device. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is an overall structural diagram of a steel pipe outer diameter detection device according to the present invention.

[0018] Figure 2 This is a front sectional view of a steel pipe outer diameter detection device according to the present invention.

[0019] Figure 3 This is a structural diagram of the measuring mechanism of this utility model.

[0020] Figure 4 This utility model Figure 2Enlarged view of point A in the middle.

[0021] The markings in the diagram are: 1. Frame; 2. Slip ring; 3. Rotary ring; 4. First servo motor; 5. First gear; 6. Second gear; 7. Support plate; 8. First threaded rod; 9. First limit rod; 10. Movable plate; 11. Measuring plate; 12. Connecting shaft; 13. Spring; 14. Measuring ruler; 15. Measuring pointer; 16. Second servo motor; 17. Second threaded rod; 18. Slide plate; 19. Sleeve; 20. Hexagonal shaft; 21. Third servo motor; 22. Ear plate; 23. Third threaded rod; 24. Clamping plate; 25. First bevel gear; 26. Second bevel gear; 27. Fourth threaded rod; 28. Fourth servo motor; 29. ​​Second limit rod. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-4 A steel pipe outer diameter detection device includes a frame 1. Inside the frame 1, a measuring mechanism is installed via a first driving mechanism, and a fixing mechanism is installed via a second driving mechanism. The measuring mechanism includes a slip ring 2. A rotating ring 3 is rotatably connected to the inner wall of the slip ring 2 via a bearing. A second gear 6 is fixedly connected to the outer wall of the rotating ring 3. A first servo motor 4 is mounted on the outer wall of the slip ring 2. The output end of the first servo motor 4 extends to the other side of the slip ring 2 and is fixedly connected to a first gear 5 that meshes with the second gear 6. Two support plates 7 are fixedly connected to the outer wall of the rotating ring 3, and a first gear 5 is rotatably connected between the two support plates 7. A threaded rod 8 is fixedly connected to two support plates 7. Both ends of the outer wall of the first threaded rod 8 are threadedly connected to movable plates 10 that are slidably connected to the first limit rod 9. Two measuring plates 11 are arranged between the two movable plates 10. Two connecting shafts 12 that are slidably connected to the outer walls of the two measuring plates 11 are fixedly connected to the outer walls of the two measuring plates 11. Springs 13 located between the measuring plates 11 and the movable plates 10 are sleeved on the outer walls of the multiple connecting shafts 12. A measuring ruler 14 is fixedly connected to the outer wall of one measuring plate 11, and a measuring pointer 15 is fixedly connected to the outer wall of the other measuring plate 11.

[0024] In this embodiment: by rotating the first threaded rod 8, the first threaded rod 8 drives the two movable plates 10 to move synchronously relative to each other, and then drives the two measuring plates 11 to move synchronously relative to each other through the connecting shaft 12 and the spring 13, pressing against the outer wall of the steel pipe, the outer diameter of the steel pipe can be measured by the measuring ruler 14 and the measuring pointer 15; the first servo motor 4 is started, the first servo motor 4 drives the first gear 5 to rotate, and then drives the rotating ring 3 to rotate through the second gear 6. The rotating ring 3 further drives the two movable plates 10 to rotate through the support plate 7, the first threaded rod 8 and the first limit rod 9, and then drives the two measuring plates 11 to rotate circumferentially along the steel pipe. The spring 13 can adaptively clamp the measuring plates 11 to the outer wall of the steel pipe, so that the outer diameter of the steel pipe in different circumferential directions can be measured and compared, and the average value can be calculated; the first driving mechanism can drive the measuring mechanism to move axially along the steel pipe, so that the outer diameter at different positions of the steel pipe can be measured in the field, and the effect is good.

[0025] As a technical optimization of this utility model, the fixing mechanism includes two slide plates 18. A hexagonal shaft 20 is rotatably connected to the lower side of the inner wall of the frame 1. A third servo motor 21 with its output end fixedly connected to the hexagonal shaft 20 is installed on the outer wall of the frame 1. A sleeve 19 that is slidably connected to the hexagonal shaft 20 is rotatably connected through a bearing to the outer wall of the slide plate 18. A second bevel gear 26 is fixedly connected to the outer wall of the sleeve 19. A third threaded rod 23 is rotatably connected to the outer wall of the slide plate 18 through two ear plates 22. A first bevel gear 25 that meshes with the second bevel gear 26 is fixedly connected to the lower end of the outer wall of the third threaded rod 23. Both ends of the outer wall of the third threaded rod 23 are threadedly connected to L-shaped clamps 24 that extend to the other side of the slide plate 18.

[0026] In this embodiment: the steel pipe is placed between two sliding plates 18, the third servo motor 21 is started, the third servo motor 21 drives the hexagonal shaft 20 to rotate, which in turn drives the two sleeves 19 to rotate synchronously, and then drives the two third threaded rods 23 to rotate synchronously in opposite directions through the second bevel gear 26 and the first bevel gear 25. The third threaded rods 23 drive the two clamping plates 24 to move synchronously relative to each other, thereby automatically centering and fixing both ends of the steel pipe (the axis of the steel pipe after fixing always coincides with the axis of the rotating ring 3).

[0027] As a technical optimization of this utility model, the first driving mechanism includes a second threaded rod 17 rotatably connected to the upper side of the inner wall of the frame 1, a slip ring 2 threadedly connected to the second threaded rod 17, a second servo motor 16 with its output end fixedly connected to the second threaded rod 17 installed on the outer wall of the frame 1, and two support rods slidably connected to the slip ring 2 fixedly connected to the upper side of the inner wall of the frame 1.

[0028] In this embodiment: the second servo motor 16 is started, which in turn drives the second threaded rod 17 to rotate. The second threaded rod 17 further drives the slip ring 2 to move left and right along the support rod, thereby adjusting the left and right position of the measuring mechanism to facilitate the measurement of different positions of the steel pipe.

[0029] As a technical optimization of this utility model, the second drive mechanism includes a fourth threaded rod 27 rotatably connected to the lower side of the inner wall of the frame 1, a fourth servo motor 28 whose output end is fixedly connected to the fourth threaded rod 27 is installed on the outer wall of the frame 1, two slide plates 18 are respectively threaded to the two ends of the fourth threaded rod 27, and a second limiting rod 29 that is slidably connected to the two slide plates 18 is fixedly connected to the lower side of the inner wall of the frame 1.

[0030] In this embodiment: the fourth servo motor 28 is started, and the fourth servo motor 28 drives the fourth threaded rod 27 to rotate, thereby driving the two slide plates 18 to move synchronously relative to each other or in opposite directions, so as to adjust the distance between the two slide plates 18 according to the length of the steel pipe.

[0031] As a technical optimization of this utility model, the thread directions at both ends of the outer wall of the first threaded rod 8 are opposite.

[0032] In this embodiment: by setting the thread directions at both ends of the outer wall of the first threaded rod 8 to be opposite, it is convenient to drive the two measuring plates 11 to move synchronously relative to each other or in opposite directions.

[0033] As a technical optimization of this utility model, the thread directions at both ends of the outer wall of the fourth threaded rod 27 are opposite.

[0034] In this embodiment: by setting the thread directions at both ends of the outer wall of the fourth threaded rod 27 to be opposite, it is convenient to drive the two slide plates 18 to move synchronously relative to each other or in opposite directions.

[0035] As a technical optimization of this utility model, the threads on the outer walls of the two third threaded rods 23 are in opposite directions.

[0036] In this embodiment: Since the rotation directions of the two third threaded rods 23 are opposite, the thread directions of the two third threaded rods 23 must be opposite so that the two clamping plates 24 at the same height move synchronously.

[0037] As a technical optimization of this utility model, a controller is provided on the outer wall of the frame 1, and the first servo motor 4, the second servo motor 16, the third servo motor 21 and the fourth servo motor 28 are all electrically connected to the controller.

[0038] In this embodiment, the controller can control the first servo motor 4, the second servo motor 16, the third servo motor 21 and the fourth servo motor 28 to work normally.

[0039] The working principle and usage process of this utility model are as follows: First, the steel pipe is placed between two sliding plates 18. Then, the fourth servo motor 28 is started, driving the fourth threaded rod 27 to rotate, which in turn drives the two sliding plates 18 to move synchronously relative to each other or in opposite directions. The distance between the two sliding plates 18 is adjusted according to the length of the steel pipe, and the two ends of the steel pipe are fixed by the sliding plates 18. Next, the third servo motor 21 is started, driving the hexagonal shaft 20 to rotate, which in turn drives the two sleeves 19 to rotate synchronously. This, in turn, drives the two third threaded rods 23 to rotate synchronously in opposite directions via the second bevel gear 26 and the first bevel gear 25. The third threaded rods 23 drive the two clamping plates 24 to move synchronously relative to each other, thus automatically centering and fixing the two ends of the steel pipe. Then, by rotating the first threaded rod 8 with the handle, the first threaded rod 8 drives the two movable plates 10 to move synchronously relative to each other, which, through the connecting shaft 12 and... Spring 13 drives two measuring plates 11 to move synchronously relative to each other, pressing against the outer wall of the steel pipe. The outer diameter of the steel pipe can then be measured using measuring ruler 14 and measuring pointer 15. Next, the first servo motor 4 is started, which drives the first gear 5 to rotate, which in turn drives the rotating ring 3 to rotate via the second gear 6. The rotating ring 3 further drives the two movable plates 10 to rotate via the support plate 7, the first threaded rod 8, and the first limit rod 9, which in turn drives the two measuring plates 11 to rotate circumferentially along the steel pipe. Spring 13 can adaptively clamp the measuring plates 11 against the outer wall of the steel pipe, thus allowing for the measurement and comparison of the outer diameter of the steel pipe in different circumferential directions, thereby calculating the average value. The second servo motor 16 is started, which drives the second threaded rod 17 to rotate. The second threaded rod 17 further drives the slip ring 2 to move left and right along the support rod, thereby adjusting the left and right position of the measuring mechanism, facilitating the measurement of different positions of the steel pipe, and achieving good results.

[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A steel pipe outer diameter detection device, comprising a frame (1), characterized in that: The frame (1) has a measuring mechanism inside via a first driving mechanism and a fixing mechanism via a second driving mechanism. The measuring mechanism includes a slip ring (2). The inner wall of the slip ring (2) is rotatably connected to a rotating ring (3) via a bearing. The outer wall of the rotating ring (3) is fixedly connected to a second gear (6). A first servo motor (4) is mounted on the outer wall of the slip ring (2). The output end of the first servo motor (4) extends to the other side of the slip ring (2) and is fixedly connected to a first gear (5) that meshes with the second gear (6). The outer wall of the rotating ring (3) is fixedly connected to two support plates (7). A first threaded rod (8) is rotatably connected between the two support plates (7). A first limiting rod (9) is fixedly connected between the support plates (7). Both ends of the outer wall of the first threaded rod (8) are threadedly connected to movable plates (10) that are slidably connected to the first limiting rod (9). Two measuring plates (11) are arranged between the two movable plates (10). Two connecting shafts (12) that are slidably connected to the outer walls of the two measuring plates (11) are fixedly connected to the outer walls of the two measuring plates (11). A spring (13) located between the measuring plate (11) and the movable plate (10) is sleeved on the outer walls of the multiple connecting shafts (12). A measuring ruler (14) is fixedly connected to the outer wall of one of the measuring plates (11), and a measuring pointer (15) is fixedly connected to the outer wall of the other measuring plate (11).

2. The steel pipe outer diameter detection device according to claim 1, characterized in that: The fixing mechanism includes two slide plates (18). A hexagonal shaft (20) is rotatably connected to the lower side of the inner wall of the frame (1). A third servo motor (21) with its output end fixedly connected to the hexagonal shaft (20) is installed on the outer wall of the frame (1). A sleeve (19) that is slidably connected to the hexagonal shaft (20) is rotatably connected through a bearing to the outer wall of the slide plate (18). A second bevel gear (26) is fixedly connected to the outer wall of the sleeve (19). A third threaded rod (23) is rotatably connected to the outer wall of the slide plate (18) through two ear plates (22). A first bevel gear (25) that meshes with the second bevel gear (26) is fixedly connected to the lower end of the outer wall of the third threaded rod (23). Both ends of the outer wall of the third threaded rod (23) are threadedly connected to L-shaped clamps (24) that extend to the other side of the slide plate (18).

3. The steel pipe outer diameter detection device according to claim 1, characterized in that: The first driving mechanism includes a second threaded rod (17) rotatably connected to the upper side of the inner wall of the frame (1), the slip ring (2) is threadedly connected to the second threaded rod (17), the outer wall of the frame (1) is equipped with a second servo motor (16) whose output end is fixedly connected to the second threaded rod (17), and the upper side of the inner wall of the frame (1) is fixedly connected with two support rods that are slidably connected to the slip ring (2).

4. The steel pipe outer diameter detection device according to claim 2, characterized in that: The second drive mechanism includes a fourth threaded rod (27) rotatably connected to the lower side of the inner wall of the frame (1), a fourth servo motor (28) whose output end is fixedly connected to the fourth threaded rod (27) is installed on the outer wall of the frame (1), the two slide plates (18) are respectively threaded to the two ends of the fourth threaded rod (27), and a second limiting rod (29) that is slidably connected to the two slide plates (18) is fixedly connected to the lower side of the inner wall of the frame (1).

5. The steel pipe outer diameter detection device according to claim 1, characterized in that: The threads at both ends of the outer wall of the first threaded rod (8) are in opposite directions.

6. The steel pipe outer diameter detection device according to claim 4, characterized in that: The threads at both ends of the outer wall of the fourth threaded rod (27) are in opposite directions.

7. The steel pipe outer diameter detection device according to claim 2, characterized in that: The threads on the outer walls of the two third threaded rods (23) are in opposite directions.

8. The steel pipe outer diameter detection device according to claim 1, characterized in that: The outer wall of the frame (1) is equipped with a controller, and the first servo motor (4), the second servo motor (16), the third servo motor (21) and the fourth servo motor (28) are all electrically connected to the controller.

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