Automatic feeding and centering positioning device for large-diameter welded pipe
By using a motor-driven bevel gear transmission system and a ratchet ferrule mechanism, the problems of inaccurate centering and reverse movement of large-diameter welded pipes were solved, achieving precise centering and stable transmission of the welded pipes and improving welding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TINGHE TECHNOLOGY CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-05-19
AI Technical Summary
Existing automatic feeding and centering devices for large-diameter welded pipes have problems with inaccurate centering and reverse movement of the welded pipe, resulting in defects such as misalignment and incomplete fusion of the weld seam.
A motor-driven bevel gear transmission system moves the threaded rod to move the clamping plate to center and position the welded pipe. The ratchet and the ferrule work together to prevent the welded pipe from moving in the opposite direction, ensuring stable transmission.
It achieves precise centering and positioning of welded pipes, prevents reverse offset, improves welding stability and accuracy, and reduces the impact of human intervention errors and equipment vibration on welded pipes.
Smart Images
Figure CN224257671U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welded pipe processing technology, and in particular to an automatic feeding and centering positioning device for large-diameter welded pipes. Background Technology
[0002] In the energy and water conservancy sectors, large-diameter welded pipes serve as the main channels for long-distance oil and gas pipelines and large-scale water diversion and drainage projects, significantly improving transportation efficiency and reducing unit costs due to their high throughput. In engineering construction, they are used in bridge piers, offshore platform jackets, and trusses and columns of large buildings, providing strong axial load-bearing and bending resistance. In the industrial sector, they are the main pipelines for transporting bulk media such as raw materials, circulating water, and steam between chemical plants, power plants, and metallurgical plants. Automatic feeding and alignment devices for large-diameter welded pipes are automated equipment used for transporting and precisely aligning these pipes.
[0003] Existing devices often require manual adjustment during initial positioning, especially when the welded pipe is heavy, requiring workers to rely on experience and visual judgment to determine the centering position. Manual operation is susceptible to visual errors and fatigue, leading to axial deviations and defects such as weld misalignment and incomplete fusion. Furthermore, during operation, the device may experience vibrations or unexpected lateral forces when the welded pipe comes into contact with other components, disrupting its stability and causing it to move in the opposite direction. Therefore, an automatic feeding and centering device for large-diameter welded pipes is proposed to address these issues. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an automatic feeding and centering positioning device for large-diameter welded pipes, which aims to improve the problems of inaccurate centering and reverse movement of welded pipes due to accidents in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic feeding and centering positioning device for large-diameter welded pipes, comprising a conveyor table, an centering mechanism provided on the inner wall of the conveyor table, the centering mechanism comprising a motor, the motor being fixedly connected to the inner wall of the conveyor table, a first bevel gear being fixedly connected to the output shaft of the motor, the first bevel gear meshing with a second bevel gear, a threaded rod being fixedly connected at the center of the inner wall of the second bevel gear, a connecting plate being threadedly connected to the outer wall of the threaded rod, a fixing rod being slidably connected to the inner wall of the connecting plate, a connecting rod being fixedly connected to the inner wall of the connecting plate, a clamping plate being fixedly connected to the side wall of the connecting rod, and a stabilizing mechanism being provided on the inner wall of the clamping plate.
[0006] As a further description of the above technical solution: the stabilizing mechanism includes a rotating rod, which is rotatably connected to the clamping plate. A pulley is fixedly connected to the outer wall of the rotating rod, and a ratchet is fixedly connected to the outer wall of the rotating rod. A retaining sleeve is slidably connected to the inner wall of the clamping plate, and the retaining sleeve is elastically connected to the inner wall of the clamping plate by a spring.
[0007] As a further description of the above technical solution: the first bevel gear is rotatably connected to the inner wall of the bottom end of the conveyor table, and the threaded rod is rotatably connected to the inner wall of the conveyor table.
[0008] As a further description of the above technical solution: the fixing rod is fixedly connected to the outer side wall of the conveyor table.
[0009] As a further description of the above technical solution: the connecting rod is slidably connected in the top support of the conveyor.
[0010] As a further description of the above technical solution: the ratchet is rotatably connected to the inner wall of the clamping plate.
[0011] As a further description of the above technical solution: the ratchet teeth of the ratchet are engaged in the inner wall of the sleeve.
[0012] As a further description of the above technical solution: one end of the spring is fixedly connected to the outer wall of the sleeve, and the other end of the spring is fixedly connected to the inner wall of the clamp.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, the motor drives the first bevel gear to rotate, which in turn drives the meshing second bevel gear to rotate, causing the threaded rod to rotate. The threaded rod drives the connecting plate connected to the outer wall threaded to move. The connecting plate slides along the fixed rod, and the connecting rod drives the clamping plate to approach the welded pipe. The clamping plates on both sides move synchronously to achieve the centering and positioning of the welded pipe, thereby improving the problem of inaccurate centering and errors in the prior art.
[0015] 2. In this utility model, when the welded pipe shows a tendency to move in the opposite direction, the ratchet rotates in the opposite direction, and its ratchet teeth will engage with the ferrule. The ferrule restricts the rotation of the rotating rod in the opposite direction through the brake ratchet, thereby preventing the pulley from rolling in the opposite direction, thus preventing the welded pipe from deviating in the opposite direction and ensuring the stable transmission of the welded pipe. This improves the problem of the welded pipe moving in the opposite direction due to accidents in the prior art. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of an automatic feeding and centering device for large-diameter welded pipes proposed in this utility model.
[0017] Figure 2This is a schematic diagram of the motor, the first bevel gear, and the second bevel gear of an automatic feeding and centering positioning device for large-diameter welded pipes proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the clamping plate, pulley, and threaded rod of an automatic feeding and centering positioning device for large-diameter welded pipes proposed in this utility model.
[0019] Figure 4 This utility model proposes an automatic feeding and centering positioning device for large-diameter welded pipes. Figure 3 An enlarged schematic diagram of part A in the middle;
[0020] Figure 5 This invention presents a schematic diagram of a ratchet, ferrule, and spring for an automatic feeding and centering positioning device for large-diameter welded pipes.
[0021] Legend:
[0022] 1. Conveyor; 2. Centering mechanism; 3. Stabilizing mechanism; 21. Motor; 22. First bevel gear; 23. Second bevel gear; 24. Threaded rod; 25. Connecting plate; 26. Connecting rod; 27. Clamping plate; 28. Fixing rod; 31. Pulley; 32. Rotating rod; 33. Ratchet; 34. Sleeve; 35. Spring. Detailed Implementation
[0023] 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.
[0024] Reference Figures 1-3As shown, one embodiment of this utility model provides an automatic feeding and centering positioning device for large-diameter welded pipes, including a conveyor table 1. The conveyor table 1 can carry the welded pipes for conveying and positioning operations. A centering mechanism 2 is provided on the inner wall of the conveyor table 1. The centering mechanism 2 can stably center the welded pipes. The centering mechanism 2 includes a motor 21, which is the power source for the centering mechanism 2. The motor 21 is fixedly connected to the inner wall of the conveyor table 1. A first bevel gear 22 is fixedly connected to the output shaft of the motor 21. The first bevel gear 22 is rotatably connected to the bottom inner wall of the conveyor table 1. The first bevel gear 22 can drive a meshing second bevel gear 23 to rotate. The first bevel gear 22 meshes with the second bevel gear 23. The rotation of the second bevel gear 23 drives a threaded rod 24 to rotate. A threaded rod 24 is fixedly connected to the center of the inner wall of the second bevel gear 23. The rotation of the threaded rod 24 drives a threaded rod 24 to rotate. Connected to the inner wall of the conveyor 1, the threaded rod 24 rotates to move the connecting plate 25 along the fixed rod 28. The outer wall of the threaded rod 24 is threaded with the connecting plate 25. The movement of the connecting plate 25 drives the clamping plate 27 to move through the connecting rod 26. The inner wall of the connecting plate 25 is slidably connected with the fixed rod 28. The fixed rod 28 is fixedly connected to the outer side wall of the conveyor 1. The fixed rod 28 can limit the connecting plate 25 to ensure its smooth sliding. The inner wall of the connecting plate 25 is fixedly connected with the connecting rod 26. The connecting rod 26 is slidably connected to the top support of the conveyor 1. The connecting rod 26 transmits the force of the connecting plate 25 to drive the clamping plate 27 to move closer to or away from the welded pipe. The side wall of the connecting rod 26 is fixedly connected with the clamping plate 27. The clamping plate 27 can clamp the welded pipe to complete the centering and positioning. The inner wall of the clamping plate 27 is provided with a stabilizing mechanism 3. The stabilizing mechanism 3 can prevent the welded pipe from accidentally deviating in the opposite direction.
[0025] Reference Figures 3-5 As shown, the stabilizing mechanism 3 includes a rotating rod 32, which rotates with the pulley 31 and drives the ratchet 33 to rotate. The rotating rod 32 is rotatably connected to the clamping plate 27. The pulley 31 is fixedly connected to the outer wall of the rotating rod 32. The pulley 31 contacts the welded pipe to reduce friction and facilitate transmission. The ratchet 33 is fixedly connected to the outer wall of the rotating rod 32. The ratchet 33 is rotatably connected to the inner wall of the clamping plate 27. The ratchet teeth of the ratchet 33 are engaged in the inner wall of the clamping sleeve 34. The ratchet 33 can rotate freely in the forward direction, but it engages with the clamping sleeve 34 to brake in the reverse direction. The clamping sleeve 34 is slidably connected to the inner wall of the clamping plate 27. The clamping sleeve 34 can engage the ratchet 33 to prevent reverse rotation. The clamping sleeve 34 is elastically connected to the inner wall of the clamping plate 27 by a spring 35. One end of the spring 35 is fixedly connected to the outer wall of the clamping sleeve 34, and the other end of the spring 35 is fixedly connected to the inner wall of the clamping plate 27. The spring 35 provides elastic force to the clamping sleeve 34 so that the clamping sleeve 34 can automatically reset.
[0026] In use, the present invention first turns on the motor 21, which drives the first bevel gear 22 to rotate, thereby causing the meshing second bevel gear 23 to rotate, which in turn causes the threaded rod 24 to rotate. The threaded rod 24 drives the connecting plate 25, which is threaded to the outer wall, to move. The connecting plate 25 slides along the fixed rod 28, and through the connecting rod 26, it drives the clamping plate 27 to approach the welded pipe. The clamping plates 27 on both sides move synchronously to achieve the centering and positioning of the welded pipe.
[0027] When the welded pipe moves on the conveyor table 1, its surface contacts the pulley 31, causing the pulley 31 and the rotating rod 32 to rotate. At this time, the ratchet 33 on the rotating rod 32 rotates together. The ferrule 34 cooperates with the ratchet 33 under the action of the spring 35, without affecting the normal rotation. If the welded pipe shows a tendency to move in the opposite direction, the ratchet 33 rotates in the opposite direction, and its ratchet teeth will engage with the ferrule 34. The ferrule 34 restricts the rotating rod 32 from rotating in the opposite direction by braking the ratchet 33, thereby preventing the pulley 31 from rolling in the opposite direction, thus preventing the welded pipe from deviating in the opposite direction and ensuring the stable transmission of the welded pipe.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic feeding and centering device for large-diameter welded pipes, comprising a conveyor table (1), characterized in that: The inner wall of the conveyor (1) is provided with a centering mechanism (2). The centering mechanism (2) includes a motor (21). The motor (21) is fixedly connected to the inner wall of the conveyor (1). A first bevel gear (22) is fixedly connected to the output shaft of the motor (21). The first bevel gear (22) meshes with a second bevel gear (23). A threaded rod (24) is fixedly connected to the center of the inner wall of the second bevel gear (23). A connecting plate (25) is threadedly connected to the outer wall of the threaded rod (24). A fixing rod (28) is slidably connected to the inner wall of the connecting plate (25). A connecting rod (26) is fixedly connected to the inner wall of the connecting plate (25). A clamping plate (27) is fixedly connected to the side wall of the connecting rod (26). A stabilizing mechanism (3) is provided on the inner wall of the clamping plate (27).
2. The automatic feeding and centering device for large-diameter welded pipes according to claim 1, characterized in that: The stabilizing mechanism (3) includes a rotating rod (32), which is rotatably connected to the clamping plate (27). A pulley (31) is fixedly connected to the outer wall of the rotating rod (32), and a ratchet (33) is fixedly connected to the outer wall of the rotating rod (32). A retainer (34) is slidably connected to the inner wall of the clamping plate (27), and the retainer (34) is elastically connected to the inner wall of the clamping plate (27) by a spring (35).
3. The automatic feeding and centering device for large-diameter welded pipes according to claim 1, characterized in that: The first bevel gear (22) is rotatably connected to the inner wall of the bottom end of the conveyor (1), and the threaded rod (24) is rotatably connected to the inner wall of the conveyor (1).
4. The automatic feeding and centering device for large-diameter welded pipes according to claim 1, characterized in that: The fixing rod (28) is fixedly connected to the outer side wall of the conveyor (1).
5. The automatic feeding and centering device for large-diameter welded pipes according to claim 1, characterized in that: The connecting rod (26) is slidably connected to the top support of the conveyor (1).
6. The automatic feeding and centering device for large-diameter welded pipes according to claim 2, characterized in that: The ratchet (33) is rotatably connected to the inner wall of the clamp (27).
7. The automatic feeding and centering device for large-diameter welded pipes according to claim 2, characterized in that: The ratchet teeth of the ratchet (33) engage in the inner wall of the sleeve (34).
8. The automatic feeding and centering device for large-diameter welded pipes according to claim 2, characterized in that: One end of the spring (35) is fixedly connected to the outer wall of the sleeve (34), and the other end of the spring (35) is fixedly connected to the inner wall of the clamp (27).