Large-pipe-diameter pipeline welding device and method with automatic welding groove forming function

Abstract

The invention relates to the technical field of electric arc welding, in particular to a large-pipe-diameter pipeline welding device and method with a welding groove automatic forming function. The large-pipe-diameter pipeline welding device comprises a welding table and a translation assembly arranged on the welding table, and a supporting plate is connected to the translation assembly; the distance adjusting and controlling assembly is arranged on the supporting plate, the distance adjusting and controlling assembly comprises two connecting plates which are symmetrically arranged, and fixing plates are fixed to the connecting plates; the two-way clamping mechanism is arranged on the connecting plate, the two-way clamping mechanism comprises two clamping plates which are symmetrically arranged, and the two-way clamping mechanism can adjust the distance between the two clamping plates; and the elastic compensation mechanism is arranged on the two-way clamping mechanism, through cooperation of the two-way clamping mechanism and the elastic compensation mechanism, two-way clamping can be conducted on pipelines of different sizes, and when the pipelines vibrate due to groove machining, dynamic compensation is conducted on vibration displacement through elastic deformation.

Description

Technical Field

[0001] This invention relates to the field of arc welding technology, specifically to a welding device and method for large-diameter pipes with automatic bevel forming function. Background Technology

[0002] The beveling process for pipe welding is an important step in the welding process. Its purpose is to ensure welding quality, ensure that the weld can be fully penetrated and form a good weld shape.

[0003] When processing bevels for large-diameter pipes, the quality of the bevel processing directly affects the strength, sealing, and crack resistance of the weld, and the stability of the clamping is one of the important factors affecting the quality of the bevel processing.

[0004] Therefore, when beveling pipes, rigid clamping can be used to ensure processing stability. Rigid clamps can reduce the elastic deformation of the pipe-clamp system, making it difficult for vibration energy to accumulate. However, when rigid clamping is applied to the pipe, it may cause local deformation of the pipe, which may introduce new vibration sources and thus affect the processing accuracy.

[0005] This can be addressed by using flexible clamping. Flexible contact can avoid rigid impact and reduce stress concentration when clamping the pipe, thereby preventing pipe deformation. However, large-diameter pipes require a large beveling depth. During the cutting process, cutting vibration can easily cause periodic patterns and deviations in circumferential angles on the bevel surface, which can lead to fluctuations in weld penetration during subsequent welding. Summary of the Invention

[0006] The purpose of this invention is to provide a welding device and method for large-diameter pipes with automatic bevel forming function, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a large-diameter pipe welding device with automatic bevel forming function, comprising: a welding table, and a translation component disposed on the welding table, wherein a support plate is connected to the translation component; further comprising: a spacing adjustment component disposed on the support plate, wherein the spacing adjustment component includes two symmetrically arranged connecting plates, wherein a fixing plate is fixed on the connecting plates; a bidirectional clamping mechanism disposed on the connecting plates, wherein the bidirectional clamping mechanism includes two symmetrically arranged clamping plates, wherein the bidirectional clamping mechanism is capable of adjusting the spacing between the two clamping plates; and an elastic compensation mechanism disposed on the bidirectional clamping mechanism, wherein the elastic compensation mechanism is capable of dynamically compensating for vibration displacement through elastic deformation when the clamping plates are subjected to force and vibration.

[0008] As a further aspect of the present invention: the bidirectional clamping mechanism includes a second sliding groove formed on the fixed plate and arranged symmetrically, a second sliding block is slidably installed in the second sliding groove, and a movable plate is fixed to the side wall of the second sliding block.

[0009] As a further embodiment of the present invention: the bidirectional clamping mechanism further includes a support sleeve vertically fixed to the movable plate, and a support rod that is axially slidable inside the support sleeve and fixedly connected to the clamping plate.

[0010] As a further embodiment of the present invention: the elastic compensation mechanism includes a first limiting ring that slides along the axial direction of the support sleeve, a second limiting ring fixed on the support rod, a first limiting post and a second limiting post fixed on the first limiting ring and the second limiting ring respectively, and a spring sleeved on the support sleeve and the support rod, with the two ends of the spring abutting against the first limiting ring and the second limiting ring respectively.

[0011] As a further embodiment of the present invention: the elastic compensation mechanism further includes a guide rail fixed on the movable plate, a sliding sleeve slidably on the guide rail, a limiting plate fixed on the side wall of the sliding sleeve, and a first inclined groove and a second inclined groove respectively provided on the limiting plate to slide and engage with the first limiting ring and the second limiting ring.

[0012] As a further embodiment of the present invention: a slot is formed on the connecting plate, a movable block is slidably installed in the slot, a connecting rod hinged to the movable block and hinged to the second sliding block is connected to the movable block, and a second cylinder fixedly connected to the movable block is fixed on the connecting plate.

[0013] As a further embodiment of the present invention: the translation component includes a motor fixed on the welding table, a bidirectional lead screw rotatably mounted on the welding table and connected to the output shaft of the motor, and two threaded sleeves symmetrically arranged connected to the bidirectional lead screw; it also includes a guide post fixed on the welding table, a guide sleeve slidably mounted on the guide post, and the guide sleeve and the threaded sleeve are fixedly connected to the support plate.

[0014] As a further embodiment of the present invention: the spacing adjustment component includes a first sliding groove formed on the support plate and arranged symmetrically, a first sliding block fixedly connected to the connecting plate is slidably installed in the first sliding groove, and a first cylinder fixedly connected to the first sliding block is fixed on the support plate.

[0015] As a further embodiment of the present invention, it also includes a circumferential welding assembly disposed on the welding table for welding the pipeline. The circumferential welding assembly includes a support ring fixed on the welding table, a rotating ring rotatably mounted inside the support ring, a third cylinder fixed to the outer circumference of the rotating ring, and a welding head for performing welding actions fixed to the telescopic end of the third cylinder.

[0016] A welding method for large-diameter pipes with automatic weld bevel forming function includes the following steps: Step 1: Place the two pipes to be welded on the welding table. Under the action of the translation component, adjust the distance between the two support plates according to the pipe size, and adjust the distance between the two sets of clamping plates through the distance adjustment component. Step 2: When the two clamping plates are located on the inner and outer walls of the pipe respectively, the two clamping plates are controlled to clamp the inner and outer walls of the pipe in both directions under the action of the bidirectional clamping mechanism. Step 3: After clamping is completed, the pipe end can be beveled using a beveling machine. During the beveling process, if the pipe vibrates and the vibration is transmitted to the clamping plate, the elastic compensation mechanism will dynamically compensate for the vibration displacement through elastic deformation. Step 4: After the beveling is completed, the two pipes are connected to each other by the translation component, and the pipes are welded under the action of the circumferential welding component.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the present application can dynamically compensate for the vibration displacement through elastic deformation when vibration occurs during beveling, so as to ensure the stability of beveling and subsequent welding. Specifically, through the cooperation of translation component and spacing adjustment component, the clamping plate can be controlled to move precisely to the required clamping position. At the same time, under the action of bidirectional clamping mechanism, the two clamping plates are controlled to clamp the inner and outer walls of the pipe in both directions to increase clamping stability. When vibration occurs during cutting, under the action of elastic compensation mechanism, it can respond quickly and adaptively provide dynamic compensation force to ensure the accuracy of beveling.

[0018] The elastic clamping allows the pipe to move within a small range, avoiding rigid impact. When subjected to vibration, the first and second limiting posts, as well as the first and second inclined grooves, work together to quickly compress the spring in both directions, thereby rapidly increasing the clamping force on the pipe and effectively compensating for the vibration generated by cutting.

[0019] Through adaptive dynamic compensation, it is possible to avoid the problem of pipe deformation caused by excessive clamping force due to rigid clamping and stress concentration. It can also adaptively apply reverse force to enhance the cancellation of vibration. In this way, it can effectively avoid the problem of periodic patterns and circumferential angle deviations on the bevel surface caused by cutting vibration, which will lead to the problem of penetration fluctuations during subsequent welding. Attached Figure Description

[0020] Figure 1 A schematic diagram of a large-diameter pipe welding device with automatic bevel forming function; Figure 2 A schematic diagram of the structure from the first angle in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function; Figure 3 A schematic diagram of the second angle of an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function; Figure 4 A schematic diagram showing the connection relationship between the translation component, the spacing adjustment component, the bidirectional clamping mechanism, and the partial elastic compensation mechanism in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function. Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 A schematic diagram of the spacing adjustment component, bidirectional clamping mechanism, and elastic compensation mechanism in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function; Figure 7 for Figure 6 Another structural diagram from another angle; Figure 8 A schematic diagram of the bidirectional clamping mechanism and the elastic compensation mechanism in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function; Figure 9 A schematic diagram of the structure of some bidirectional clamping mechanisms and elastic compensation mechanisms in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function; Figure 10 A schematic diagram of the elastic compensation mechanism and clamping plate in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function; Figure 11 An exploded structural diagram of the elastic compensation mechanism in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function. Figure 12 An exploded structural diagram of part of the bidirectional clamping mechanism in an embodiment of a large-diameter pipe welding device with automatic weld bevel forming function.

[0021] In the diagram: 1. Welding table; 2. Motor; 3. Double-acting lead screw; 4. Threaded sleeve; 5. Guide post; 6. Guide sleeve; 7. Support plate; 701. First slide groove; 8. First sliding block; 9. First cylinder; 10. Connecting plate; 1001. Slot; 11. Fixing plate; 1101. Second slide groove; 12. Second sliding block; 13. Movable plate; 1301. Guide rail; 14. Support sleeve; 15. Support rod; 1 6. Clamping plate; 17. Support column; 18. First limiting ring; 1801. First limiting column; 19. Second limiting ring; 1901. Second limiting column; 20. Spring; 21. Sliding sleeve; 22. Limiting plate; 2201. First inclined groove; 2202. Second inclined groove; 23. Movable block; 24. Second cylinder; 25. Connecting rod; 26. Support ring; 27. Rotating ring; 28. Third cylinder; 29. ​​Welding head. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0024] Please see Figures 1-12 In this embodiment of the invention, a large-diameter pipe welding device with automatic bevel forming function includes: a welding table 1 and a translation component disposed on the welding table 1, wherein a support plate 7 is connected to the translation component; it also includes: a spacing adjustment component disposed on the support plate 7, wherein the spacing adjustment component includes two symmetrically arranged connecting plates 10, wherein a fixing plate 11 is fixed on the connecting plates 10; a bidirectional clamping mechanism disposed on the connecting plates 10, wherein the bidirectional clamping mechanism includes two symmetrically arranged clamping plates 16, wherein the bidirectional clamping mechanism can adjust the spacing between the two clamping plates 16; and an elastic compensation mechanism disposed on the bidirectional clamping mechanism, wherein the elastic compensation mechanism can dynamically compensate for vibration displacement through elastic deformation when the clamping plates 16 are subjected to force and vibration.

[0025] Specifically, when welding large-diameter pipes, two pipes can be placed on welding table 1, and the two clamping plates 16 are moved to the required clamping positions of the pipes by the translation component and the spacing adjustment component. The two clamping plates 16 are located on both sides of the inner and outer walls of the pipes. At this time, the bidirectional clamping mechanism can control the two clamping plates 16 to move towards each other, thereby clamping the inner and outer walls of the pipes bidirectionally, increasing the stability during beveling and welding. After clamping, the beveling machine can be used to bevele the adjacent ends of the two pipes. During processing, the pipes will inevitably be subjected to vibration, which will be transmitted to the clamping plate 16. At this time, under the action of the elastic compensation mechanism, the vibration displacement is dynamically compensated by elastic deformation to ensure that the periodic texture and circumferential angle deviation of the bevel surface will not occur due to vibration during the cutting process, thereby preventing the problem of penetration depth fluctuation during subsequent welding. After the bevel processing is completed, under the action of the translation component, the clamping plate 16 controls the two pipes to move towards each other until the ends of the two pipes abut against each other. At this time, the pipes can be subjected to arc welding.

[0026] Please see Figures 1-4 The translation component includes a motor 2 fixed on the welding table 1, a bidirectional lead screw 3 rotatably mounted on the welding table 1 and connected to the output shaft of the motor 2, and two threaded sleeves 4 symmetrically arranged connected to the bidirectional lead screw 3; it also includes a guide post 5 fixed on the welding table 1, a guide sleeve 6 slidably on the guide post 5, and the guide sleeve 6 and the threaded sleeves 4 are fixedly connected to the support plate 7.

[0027] Please see Figures 1-4 , Figure 6 , Figure 7 The spacing adjustment component includes a first sliding groove 701 formed on the support plate 7 and arranged symmetrically. A first sliding block 8 fixedly connected to the connecting plate 10 is slidably installed in the first sliding groove 701. A first cylinder 9 fixedly connected to the first sliding block 8 is fixed on the support plate 7.

[0028] Please see Figure 4In detail, the support plates 7 are located on both sides of the welding table 1. Vision sensors are installed on both support plates 7 to detect the position and size of the pipes. Initially, under the action of the bidirectional lead screw 3, the distance between the two threaded sleeves 4 is maximized, thus maximizing the distance between the two support plates 7. The first cylinder 9 is a double-headed cylinder. Under the action of the first cylinder 9, the first sliding block 8 is located at the end of its stroke on one side of the first sliding groove 701, and the distance between the two first sliding blocks 8 is maximized. Therefore, the distance between the two connecting plates 10 is maximized. At this time, the distance between the two support plates 7 is greater than the combined length of the two pipes, and the distance between the two connecting plates 10 is greater than the diameter of the pipes. When it is necessary to clamp and fix the pipes, the two pipes can be moved to the welding table 1 using a forklift or other transport tools. The vision sensors can measure the size and length of the pipes. After detection, the motor 2 is controlled based on the detected data, thereby driving the bidirectional lead screw 3 to rotate, causing the two threaded sleeves 4 to move. The threaded sleeves 4 also drive the guide sleeve 6 to move along the length direction of the guide post 5 through the support plates 7. 5 and guide sleeve 6 serve a guiding function, ensuring that threaded sleeve 4 moves along the length of the bidirectional lead screw 3 and does not rotate with the bidirectional lead screw 3; simultaneously, the first cylinder 9 operates, driving the two first sliding blocks 8 to slide synchronously along the first sliding groove 701, and the two first sliding blocks 8 move towards each other, thereby driving the two connecting plates 10 to move. The connecting plates 10 will control the movement of the two sets of clamping plates 16 through the bidirectional clamping mechanism. When the two clamping plates 16 on the upper side are located on the inner and outer sides of the pipeline respectively, the two clamping plates 16 on the lower side are also... When positioned on both the inner and outer sides of the pipeline, the first cylinder 9 stops working, and the support plate 7 continues to move until two of the clamping plates 16 are inserted into the pipeline, while the other two clamping plates 16 are located outside the pipeline. At this time, under the action of the bidirectional clamping mechanism, the two clamping plates 16 are controlled to move towards each other until the two clamping plates 16 respectively abut against the inner and outer sides of the pipeline. In this way, the pipeline can be centered to ensure the accuracy of subsequent beveling and welding, and the stability of subsequent processing can be ensured by bidirectional clamping of the inner and outer sides of the pipeline.

[0029] Please see Figures 1-4 , Figures 6-9 , Figure 12 The bidirectional clamping mechanism includes a second sliding groove 1101 formed on the fixed plate 11 and symmetrically arranged. A second sliding block 12 is slidably installed in the second sliding groove 1101. A movable plate 13 is fixed to the side wall of the second sliding block 12. The bidirectional clamping mechanism also includes a support sleeve 14 vertically fixed to the movable plate 13. A support rod 15 axially slides in the support sleeve 14 and is fixedly connected to the clamping plate 16.

[0030] A slot 1001 is formed on the connecting plate 10, and a movable block 23 is slidably installed in the slot 1001. A connecting rod 25 that is hinged to the movable block 23 and is hinged to the second sliding block 12 is mounted on the movable block 23. A second cylinder 24 that is fixedly connected to the movable block 23 is fixed on the connecting plate 10.

[0031] Please see Figures 5-11 The elastic compensation mechanism includes a first limiting ring 18 that slides axially along the support sleeve 14, a second limiting ring 19 fixed on the support rod 15, a first limiting post 1801 and a second limiting post 1901 fixed on the first limiting ring 18 and the second limiting ring 19, respectively, a spring 20 sleeved on the support sleeve 14 and the support rod 15, the two ends of the spring 20 respectively abutting against the first limiting ring 18 and the second limiting ring 19, the elastic compensation mechanism also includes a guide rail 1301 fixed on the movable plate 13, a sliding sleeve 21 that slides axially on the guide rail 1301, a limiting plate 22 fixed on the side wall of the sliding sleeve 21, and a first inclined groove 2201 and a second inclined groove 2202 that slide and engage with the first limiting ring 18 and the second limiting ring 19 respectively on the limiting plate 22.

[0032] Furthermore, a support column 17 penetrating the movable plate 13 is fixed on the clamping plate 16 to increase the stability of the clamping plate 16. Two clamping plates 16 are assembled on the connecting plate 10. Therefore, two sets of clamping plates 16 are provided on one side of the welding table 1. One set is used to clamp the inner and outer sides of the upper part of the pipeline, and the other set is used to clamp the inner and outer sides of the lower part of the pipeline. The inclination angle of the first inclined groove 2201 is greater than the inclination angle of the second inclined groove 2202, and the inclination directions of the first inclined groove 2201 and the second inclined groove 2202 are opposite. In the initial state, under the action of the first cylinder 9, the two sets of clamping plates... The spacing between the holding plates 16 is at its maximum. Under the action of the second cylinder 24, the movable block 23 is positioned at the end of its stroke towards the fixed plate 11. This allows the connecting rod 25 to control the two second sliding blocks 12 to be positioned at the end of their stroke on one side of the second slide groove 1101, with the spacing between the two second sliding blocks 12 being at its maximum. Under the action of the second sliding blocks 12, the spacing between the two movable plates 13 and the two clamping plates 16 is maximized. The maximum distance between the endpoints of the first inclined groove 2201 and the second inclined groove 2202 is less than the natural elongation of the spring 20, and the spring 20 is in a pre-compressed state, thereby providing the first limit. The force that causes the first limiting ring 18 and the second limiting ring 19 to move away from each other maximizes the distance between them, so that the first limiting post 1801 and the second limiting post 1901 are located at the end of their strokes on the opposite sides of the first inclined groove 2201 and the second inclined groove 2202, respectively. When it is necessary to clamp the pipes, the two pipes can be placed on the welding table 1, and under the action of the spacing adjustment component, the two clamping plates 16 are located on the inner and outer sides of the pipes, respectively. At this time, the translation component controls the clamping plates 16 to move to the required clamping position, and under the action of the second cylinder 24... The drive block 23 moves away from the fixed plate 11, thereby controlling the two second sliding blocks 12 to move closer to each other via the connecting rod 25. This reduces the distance between the two movable plates 13, and the movable plates 13 will drive the clamping plates 16 to move via the support sleeve 14 and the support rod 15. When the two clamping plates 16 abut against the inner and outer walls of the pipe respectively, the spring 20 is further compressed, indicating that the clamping is complete. Under the action of the upper and lower sets of clamping plates 16, the pipe can be clamped and fixed, and the pipe can be centered to ensure the stability of subsequent beveling and welding.

[0033] After clamping, the pipe end can be cut using a beveling machine. During the cutting process, vibration is easily generated at the cutting position. If this vibration is not dealt with in time, periodic patterns and deviations in circumferential angles can easily occur on the bevel surface. When vibration occurs, it will be transmitted to the clamping plate 16, causing the clamping plate 16 to shift and move towards the moving plate 13. The clamping plate 16 will drive the second limiting ring 19 to move through the support rod 15, thereby causing the second limiting post 1901 to slide within the second inclined groove 2202. Under the action of the second limiting post 1901 and the second inclined groove 2202, the sliding sleeve 21 is driven along the length of the guide rail 1301 by the limiting plate 22. The first inclined groove 2201 moves with the limiting plate 22, and the first inclined groove 2201 will drive the first limiting ring 18 to move towards the second limiting ring 19 through the first limiting post 1801. This causes the spring 20 to be compressed in both directions, thereby quickly increasing the supporting force on the clamping plate 16 to quickly and dynamically compensate for the displacement caused by vibration, thus ensuring the normal processing of the bevel surface. Moreover, the inclination angle of the first inclined groove 2201 is greater than that of the second inclined groove 2202. Therefore, when the clamping plate 16 undergoes a small displacement, the first inclined groove 2201 and the first limiting post 1801 can quickly compress the spring 20, so as to achieve a rapid response and a rapid increase in clamping force.

[0034] Preferably, when clamping the pipe, if rigid clamping is used directly and vibration is directly offset by a large clamping force, the outer wall of the pipe is prone to crushing due to the clamping force during the clamping process. Furthermore, under the effect of resonance, the clamp may vibrate at high frequency, which will affect the processing of the bevel. In this regard, elastic clamping allows the pipe to move within a small range, avoiding rigid impact. Combined with the bidirectional compression of the spring 20 when subjected to vibration, the generated vibration can be dynamically compensated quickly and effectively. This can avoid stress concentration caused by excessive clamping force, which leads to pipe deformation, and can also adaptively apply a reverse force to offset the generation of vibration.

[0035] Please see Figures 1-3 It also includes a circumferential welding assembly set on the welding table 1 for welding pipes. The circumferential welding assembly includes a support ring 26 fixed on the welding table 1. A rotating ring 27 is rotatably installed inside the support ring 26. A third cylinder 28 is fixed on the outer circumference of the rotating ring 27. A welding head 29 for performing welding actions is fixed at the telescopic end of the third cylinder 28.

[0036] Furthermore, when it is necessary to beveling the pipes, a bidirectional beveling machine can be integrated on the rotating ring 27 to simultaneously bevele two pipes. Alternatively, the pipe ends can be directly processed by the beveling machine. This is an application of existing technology and will not be elaborated upon in this application.

[0037] After the beveling is completed, the two pipes are controlled to connect with each other under the action of the translation component. Under the action of the third cylinder 28, the height of the welding head 29 is adjusted according to the size of the pipe so that the pipe can be welded through the welding head 29. During the welding process, the rotating ring 27 is controlled to rotate around the circumference so that the welding head 29 can be fully welded along the circumference of the pipe. Gears can be installed on the outer wall of the circumference of the rotating ring 27 and the rotation of the rotating ring 27 can be controlled by gear transmission. This is an application of the prior art and will not be described in detail in this application.

[0038] A welding method for large-diameter pipes with automatic weld bevel forming function includes the following steps: Step 1: Place the two pipes to be welded on the welding table 1. Under the action of the translation component, adjust the distance between the two support plates 7 according to the pipe size, and adjust the distance between the two sets of clamping plates 16 through the distance adjustment component. Step 2: When the two clamping plates 16 are located on the inner and outer walls of the pipe respectively, the two clamping plates 16 are controlled to clamp the inner and outer walls of the pipe in both directions under the action of the bidirectional clamping mechanism. Step 3: After clamping is completed, the pipe end can be beveled by a beveling machine. During the beveling process, if the pipe vibrates and the vibration is transmitted to the clamping plate 16, the elastic compensation mechanism will dynamically compensate for the vibration displacement through elastic deformation. Step 4: After the beveling is completed, the two pipes are connected to each other by the translation component, and the pipes are welded under the action of the circumferential welding component.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A large-diameter pipe welding device with automatic beveling function, including: A welding table, and a translation component disposed on the welding table, wherein a support plate is connected to the translation component; characterized in that it further comprises: a spacing adjustment component disposed on the support plate, the spacing adjustment component comprising two symmetrically arranged connecting plates, wherein a fixing plate is fixed on the connecting plates; a bidirectional clamping mechanism disposed on the connecting plate, the bidirectional clamping mechanism comprising two symmetrically arranged clamping plates, the bidirectional clamping mechanism being capable of adjusting the spacing between the two clamping plates; and an elastic compensation mechanism disposed on the bidirectional clamping mechanism, the elastic compensation mechanism being capable of dynamically compensating for vibration displacement through elastic deformation when the clamping plates are subjected to force and vibration.

2. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 1, characterized in that, The bidirectional clamping mechanism includes a second sliding groove formed on the fixed plate and arranged symmetrically, a second sliding block is slidably installed in the second sliding groove, and a movable plate is fixed to the side wall of the second sliding block.

3. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 2, characterized in that, The bidirectional clamping mechanism further includes a support sleeve that is vertically fixed to the movable plate, and a support rod that is axially slidable inside the support sleeve and fixedly connected to the clamping plate.

4. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 3, characterized in that, The elastic compensation mechanism includes a first limiting ring that slides along the axial direction of the support sleeve, a second limiting ring fixed on the support rod, a first limiting post and a second limiting post fixed on the first limiting ring and the second limiting ring respectively, and a spring sleeved on the support sleeve and the support rod, with the two ends of the spring abutting against the first limiting ring and the second limiting ring respectively.

5. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 4, characterized in that, The elastic compensation mechanism also includes a guide rail fixed on the movable plate, a sliding sleeve that slides axially on the guide rail, a limit plate fixed to the side wall of the sliding sleeve, and a first inclined groove and a second inclined groove that slide and engage with the first limit ring and the second limit ring respectively on the limit plate.

6. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 2, characterized in that, A slot is formed on the connecting plate, a movable block is slidably installed in the slot, a connecting rod that is hinged to the movable block and is hinged to the second sliding block, and a second cylinder that is fixedly connected to the movable block is fixed on the connecting plate.

7. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 1, characterized in that, The translation component includes a motor fixed on the welding table, a bidirectional lead screw rotatably mounted on the welding table and connected to the output shaft of the motor, and two symmetrically arranged threaded sleeves threadedly connected to the bidirectional lead screw; it also includes a guide post fixed on the welding table, a guide sleeve sliding axially on the guide post, and the guide sleeve and the threaded sleeve being fixedly connected to the support plate.

8. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 1, characterized in that, The spacing adjustment component includes a first sliding groove formed on the support plate and arranged symmetrically, a first sliding block fixedly connected to the connecting plate is slidably installed in the first sliding groove, and a first cylinder fixedly connected to the first sliding block is fixed on the support plate.

9. The large-diameter pipe welding device with automatic weld bevel forming function according to claim 1, characterized in that, It also includes a circumferential welding assembly set on the welding table for welding pipes. The circumferential welding assembly includes a support ring fixed on the welding table, a rotating ring rotatably installed inside the support ring, a third cylinder fixed to the outer circumference of the rotating ring, and a welding head for performing welding actions fixed to the telescopic end of the third cylinder.

10. A method for welding large-diameter pipes with automatic weld bevel forming function, comprising using the large-diameter pipe welding apparatus with automatic weld bevel forming function as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Place the two pipes to be welded on the welding table. Under the action of the translation component, adjust the distance between the two support plates according to the pipe size, and adjust the distance between the two sets of clamping plates through the distance adjustment component. Step 2: When the two clamping plates are located on the inner and outer walls of the pipe respectively, the two clamping plates are controlled to clamp the inner and outer walls of the pipe in both directions under the action of the bidirectional clamping mechanism. Step 3: After clamping is completed, the pipe end can be beveled using a beveling machine. During the beveling process, if the pipe vibrates and the vibration is transmitted to the clamping plate, the elastic compensation mechanism will dynamically compensate for the vibration displacement through elastic deformation. Step 4: After the beveling is completed, the two pipes are connected to each other by the translation component, and the pipes are welded under the action of the circumferential welding component.

Images