Automatic welding device for butt welding seams of pipelines
By designing multi-modular guide rail system and curvature adaptive components, the existing pipeline welding devices lack universality and low positioning accuracy in track design are solved, and adapting to multiple pipeline diameters and stable welding effects under complex working conditions are achieved.
Patent Information
- Application Number
- CN202510370570.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-06-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing automatic welding device for pipeline butt welds lacks versatility in track design, and trackless equipment has low positioning accuracy, is susceptible to environmental interference, and is difficult to adapt to complex working conditions.
An automatic welding device for pipe butt welds including two sets of guide rail modules and curvature adaptive components is designed. The guide rail module achieves adaptation to a variety of pipe diameters through concentric arrangement of the positioning block and the guide ring, combining the scaling fastening component and the curvature adaptation component. The curvature adaptation component automatically adjusts the center position of the guide ring through the coordination of the chord length tube and the hydraulic medium to match the curvature of the pipe.
It improves the applicability and accuracy of the welding device, can adapt to a variety of pipe diameters, and maintains stability and positioning accuracy under complex working conditions. At the same time, the modular design makes the device easy to disassemble and carry.
Smart Images
Figure CN120133830A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of welding devices, and in particular to an automatic welding device for butt welds of pipelines. Background Art
[0002] An automatic welding device for butt welds of pipelines is an efficient and precise welding equipment for pipeline connection, which is widely used in industries such as petroleum, natural gas, chemical engineering, and electric power. Such pipeline automatic welding machines usually adopt an orbital movement design, and install rigid tracks to guide the welding trolley to move precisely along the circumferential weld of the pipeline, ensuring the stability and consistency of the welding process.
[0003] Since the curvature of the track must be consistent with the curvature of the outer wall of the pipeline, otherwise it will cause welding deviation or track detachment. Therefore, the track needs to be customized according to the pipeline diameter and does not have universality. There are trackless devices in the prior art, but the positioning accuracy of such devices is relatively low, mainly due to: Trackless devices rely on magnetic adsorption or visual positioning and are easily affected by environmental interference (such as oil stains, rust on the pipeline surface, or light changes), resulting in positioning deviation; Under complex working conditions (such as pipeline inclination, vibration, or uneven surface), the magnetic adsorption type device may slip or fall off. For example, when a magnetic adsorption wheeled trolley is welding a thick-walled pipe, displacement errors may be caused due to excessive load, and it cannot be applied to non-magnetic pipelines.
[0004] Therefore, using a track can effectively improve the welding accuracy, but the curvature of the track is fixed and can only adapt to pipelines with a specified diameter, so the applicability is poor. Summary of the Invention
[0005] The purpose of the present invention is to propose an automatic welding device for butt welds of pipelines with strong applicability in view of the problems existing in the background art.
[0006] The technical solution of the present invention: an automatic welding device for butt welds of pipelines, comprising: Two groups of guide rail modules, one group of the guide rail modules includes a plurality of positioning blocks, a guide ring is installed on the positioning blocks, and the positioning blocks and the guide ring are concentrically arranged; A scaling and fastening component is installed on the plurality of positioning blocks, the scaling and fastening component drives the plurality of positioning blocks to be circumferentially arrayed and fixed on the surface of the pipeline, and the circles of the plurality of positioning blocks coincide with the pipeline; A curvature adaptation component is installed between the positioning blocks and the guide ring, and the curvature adaptation component adjusts the center of the guide ring to the position coinciding with the center of the pipeline according to the distance between two adjacent positioning blocks.
[0007] Optionally, connecting blocks are rotatably mounted on both sides of the positioning block. The curvature adaptation component includes a chord length tube fixedly mounted on one of the connecting blocks fixed to the positioning block. A plug block is slidably mounted in the chord length tube. A connecting rod is fixedly mounted on the plug block. The connecting rod penetrates through one end of the chord length tube and is fixedly connected to the adjacent connecting block.
[0008] Optionally, the curvature adaptation component further includes an actuator cylinder fixedly mounted on the positioning block. A sealing block is slidably mounted in the actuator cylinder. An actuator rod is fixedly mounted on the sealing block. The actuator rod penetrates through one end of the actuator cylinder and is fixedly connected to the guide ring. Both ends of the actuator cylinder and the chord length tube are communicated through pipelines. Hydraulic media are filled in the pipelines, the actuator cylinder and the chord length tube.
[0009] Optionally, the scaling and fastening component includes two connecting rods rotatably mounted on the connecting block. Two adjacent connecting rods on two connecting blocks are rotatably connected. A pull rod assembly is installed between the two rotatably connected connecting rods. The pull rod assembly adjusts the angle between the two connecting rods.
[0010] Optionally, the pull rod assembly includes a sleeve rod rotatably mounted on one of the connecting rods. A sealing plate is slidably mounted in the sleeve rod. A connecting rod is fixedly mounted on the sealing plate. The connecting rod is rotatably connected to the other connecting rod. A driving module for driving the synchronous movement of multiple connecting rods and keeping the lengths of multiple pull rod assemblies equal is connected to the pull rod assembly.
[0011] Optionally, the driving module includes a driving box. A plurality of partition plates are fixedly mounted in the driving box. The partition plates divide the driving box into a plurality of driving grooves. The driving grooves correspond to the sleeve rods one by one. A plug head is slidably mounted in the driving groove. A driving rod is fixedly mounted on the plug head. The driving rod penetrates through one side of the driving box and extends to the outside of the driving box. A synchronous plate is fixedly mounted on a plurality of the driving rods. A first linear motor is fixedly mounted on the driving box. The output shaft of the first linear motor is fixedly connected to the synchronous plate. Both ends of the driving groove are provided with connecting heads. Transmission tubes are fixedly mounted on the connecting heads. Sealing and detachable components are installed at both ends of the sleeve rod. The transmission tubes correspond to the sealing and detachable components one by one. The transmission tubes are communicated with both ends of the sleeve rod through the sealing and detachable components. Hydraulic media are filled in the sleeve rod, the sealing and detachable components, the driving groove and the transmission tube.
[0012] Optionally, the sealing and splitting member includes two detachable flow guide boxes. The flow guide box is provided with a circulation hole. One of the circulation holes communicates with the sleeve rod, and the other circulation hole communicates with the transmission pipe. A pressing plate is slidably installed at one end of the circulation hole. The end face of the pressing plate and the end face of the flow guide box are coplanar. A pull rod is fixedly installed on the pressing plate. The pull rod extends to the outside of the flow guide box. A rubber sheet is fixedly installed at one end of the pressing plate. A rubber pad is fixedly installed at the bottom of the flow guide box and located at the bottom of the pressing plate.
[0013] Optionally, the guide ring is provided with a chute. A support member is installed between the two guide rail modules. The support member is slidably connected to the chute. An automatic welding vehicle is fixedly installed on the support member. The support member includes a mounting plate slidably connected to the chute. A sliding rod is slidably installed on the mounting plate. A substrate is fixedly installed on the sliding rod. The substrate is fixedly connected to the automatic welding vehicle. A second linear motor is fixedly installed on the mounting plate. The output shaft of the second linear motor is fixedly connected to the substrate. Driving components are fixedly installed on both sides of the mounting plate. The driving components drive the mounting plate to move along the chute.
[0014] Optionally, the driving component includes two rollers rotatably installed on the mounting plate. The two rollers are located on both sides of the chute. Meshing gears are fixedly installed on the two rollers. A motor is fixedly installed on the mounting plate. The output shaft of the motor is fixedly connected to one of the gears.
[0015] Optionally, centering blocks are fixedly installed on multiple of the guide rings. The centering blocks on the two guide rail modules correspond one by one and a centering rod is detachably installed.
[0016] In summary, the present application includes at least one of the following beneficial technical effects: By using the cooperation of the guide ring with a constant curvature and the chute and guiding the automatic welding vehicle, the present invention can adjust the distance between the automatic welding vehicle and the pipeline and achieve the purpose of welding various pipelines, thereby improving the applicability rate, guiding various pipelines, and the device can be split into multiple small parts through modular design, which is convenient to carry and applicable to pipelines with a larger diameter. Description of the Drawings
[0017] Figure 1 The structural schematic diagram of an automatic welding device for pipeline butt welds is given Figure 1 ; Figure 2 The structural schematic diagram of an automatic welding device for pipeline butt welds is given Figure 2 ; Figure 3 The structural schematic diagram of an automatic welding device for pipeline butt welds is givenFigure 3 ; Figure 4 Schematic structure of the welding device Figure 4 ; Figure 5 Schematic structure diagram of the curvature adaptation component; Figure 6 Schematic diagram of the position distribution of the connecting rod; Figure 7 Schematic structure diagram inside the sleeve rod; Figure 8 For Figure 7 Local enlarged view at position A in Figure 9 Schematic diagram of the modules after the device is disassembled; Figure 10 Schematic structure diagram of the drive box; Figure 11 Schematic structure diagram inside the drive box; Figure 12 Schematic structure diagram of the scaling and fastening component; Figure 13 Schematic structure diagram of the sealing split part; Figure 14 For Figure 13 Local enlarged view at position B in Figure 15 Schematic structure diagram of the support member; Figure 16 For Figure 15 Local enlarged view at position C in
[0018] Reference numerals: 1, positioning block; 101, top block; 2, guide ring; 201, chute; 202, telescopic rod; 3, connecting block; 4, curvature adaptation component; 401, chord length tube; 402, plug block; 403, connecting rod; 404, actuator cylinder; 405, sealing block; 406, actuator rod; 407, pipeline; 5, scaling and fastening component; 501, connecting rod; 502, sleeve rod; 503, sealing plate; 504, connecting rod; 505, drive box; 506, partition board; 507, drive groove; 508, plug; 509, drive rod; 510, synchronous plate; 511, first linear motor; 512, connector; 513, transmission pipe; 6, sealing split part; 601, diversion box; 602, flow hole; 603, pressing plate; 604, pull rod; 605, rubber sheet; 606, rubber pad; 7, support member; 701, mounting plate; 702, sliding rod; 703, base plate; 704, second linear motor; 705, roller; 706, gear; 707, motor; 8, automatic welding vehicle; 9, centering block; 901, centering rod; 10, pipeline. Detailed implementation manners
[0019] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0020] As Figures 1 to 4 , Figure 7 , Figure 15 , Figure 16 shown, an automatic welding device for pipeline butt welds proposed by the present invention includes two groups of guide rail modules. One group of guide rail modules includes a plurality of positioning blocks 1. A guide ring 2 is installed on the positioning block 1. Two telescopic rods 202 are symmetrically rotatably connected between the positioning block 1 and the guide ring 2. Through the limiting action of the telescopic rods 202, the guide ring 2 can move along the axis connection line direction of the positioning block 1 and the guide ring 2. A cylindrical top block 101 is fixedly installed on the positioning block 1, which can be in line contact with the pipeline 10 to adapt to pipelines 10 of various diameters.
[0021] By splitting the track into multiple positioning blocks 1 and guide rings 2 for modular setting, the guide ring 2 can be split into multiple small components, which is convenient for carrying and applicable to pipelines 10 with larger diameters. The positioning block 1 and the guide ring 2 are concentrically arranged. The positioning block 1 is in contact with the pipeline 10, and multiple positioning blocks 1 are arranged in a circumferential array shape. When multiple positioning blocks 1 are all attached and fastened to the pipeline 10, the center of the circle formed by the multiple positioning blocks 1 will coincide with the center of the pipeline 10. At this time, the center of the guide ring 2 will also coincide with the center of the pipeline 10.
[0022] Further, a chute 201 is provided on the guide ring 2. The curvature of the chute 201 is fixed, and the chute 201 is arc-shaped and concentric with the guide ring 2. A support member 7 is installed between the two guide rail modules. The support member 7 is slidably connected to the chute 201. An automatic welding vehicle 8 is fixedly installed on the support member 7. The automatic welding vehicle 8 integrates a welding power source, a wire feeding mechanism, and a control system, and supports various welding processes, and can automatically weld the pipeline 10 (the automatic welding vehicle 8 is a prior art and will not be elaborated here). The support member 7 includes a mounting plate 701 slidably connected to the chute 201. A sliding rod 702 is slidably installed on the mounting plate 701. A base plate 703 is fixedly installed on the sliding rod 702. The base plate 703 is fixedly connected to the automatic welding vehicle 8. A second linear motor 704 is fixedly installed on the mounting plate 701. The output shaft of the second linear motor 704 is fixedly connected to the base plate 703. By the second linear motor 704, the base plate 703 can be driven to approach or move away from the pipeline 10, so as to control the distance between the automatic welding vehicle 8 and the pipeline 10, which is applicable to welding pipelines 10 of different diameters. Driving components are fixedly installed on both sides of the mounting plate 701. The driving components drive the mounting plate 701 to move along the chute 201. By the driving components, the automatic welding vehicle 8 can be driven to move along the chute 201, and then the automatic welding vehicle 8 can move in a circular motion along the pipeline 10.
[0023] Among them, the driving component includes two rollers 705 rotatably mounted on the mounting plate 701. The two rollers 705 are located on both sides of the sliding groove 201. Mutually meshing gears 706 are fixedly mounted on the two rollers 705. A motor 707 is fixedly mounted on the mounting plate 701. The output shaft of the motor 707 is fixedly connected to one of the gears 706. By driving the motor 707, the gear 706 can be driven to rotate, and then the two rollers 705 can be driven to move synchronously and in opposite directions. Under the frictional force between the rollers 705 and the sliding groove 201, the mounting plate 701 can be moved along the sliding groove 201.
[0024] As Figure 5 shown, this embodiment further includes a curvature adaptation component 4. The curvature adaptation component 4 is installed between the positioning block 1 and the guide ring 2. The curvature adaptation component 4 adjusts the center of the guide ring 2 to coincide with the center of the pipeline 10 according to the distance between two adjacent positioning blocks 1. Since when multiple positioning blocks 1 are attached to the pipeline 10, the diameter of the circle formed by the multiple positioning blocks 1 will change. If the distance between the positioning block 1 and the guide ring 2 remains unchanged at this time, the diameter of the circle formed by the multiple guide rings 2 will shrink, which will not be able to adapt to the curvature of the sliding groove 201, and further the automatic welding vehicle 8 cannot run smoothly. And if the circle formed by the multiple guide rings 2 needs to match its curvature, the size of the circle formed by the multiple guide rings 2 will remain in a fixed form. Therefore, it is necessary to adjust the distance between the positioning block 1 and the guide ring 2 according to the size of the circle formed by the positioning block 1.
[0025] In this embodiment, by using the cooperation of the guide ring 2 with a constant curvature and the sliding groove 201 and guiding the automatic welding vehicle 8, the purpose of welding various pipelines 10 can be achieved by adjusting the distance between the automatic welding vehicle 8 and the pipeline 10, so as to improve the applicability. However, in order to increase the applicable range, it is necessary to increase the diameter of the circle formed by the guide ring 2 as much as possible. Then the size of the guide ring 2 will be relatively large. And for the convenience of transportation and placement, the entire guide rail is split into multiple guide rings 2. In this way, when adjusting the distance between the guide ring 2 and the positioning block 1, it is relatively cumbersome, and it is necessary to continuously adjust the positions of multiple guide rings 2, and the adjustment accuracy cannot be guaranteed.
[0026] It should be noted that when two points are selected on a circle, when the central angle subtended by these two points is fixed, their straight-line distance (chord length) is in a proportional relationship with the diameter of the circle. Then, by knowing the angle and chord length between the two points, the size of the current circle can be judged. In this embodiment, the angle between the two points is the angle between two adjacent positioning blocks 1, which is known and constant. The chord length is the distance between the centers of the two positioning blocks 1. Then, according to the change of this distance, the distance between the guide ring 2 and the positioning block 1 can be increased or decreased to make the diameter of the circle formed by the multiple guide rings 2 constant.
[0027] On both sides of the positioning block 1, connecting blocks 3 are rotatably installed. The connecting block 3 and the positioning block 1 are detachably connected. The curvature adaptation component 4 includes a chord length tube 401 fixedly installed on one of the connecting blocks 3 on the positioning block 1. A plug block 402 is slidably installed in the chord length tube 401. A connecting rod 403 is fixedly installed on the plug block 402. The connecting rod 403 penetrates one end of the chord length tube 401 and is fixedly connected to the adjacent connecting block 3. The total length formed by the chord length tube 401 and the connecting rod 403 is the chord length. When multiple positioning blocks 1 are attached to pipes 10 with different diameters, the multiple positioning blocks 1 will contract or expand. At this time, the connecting rod 403 will be driven to slide inside the chord length tube 401, causing the chord length to change.
[0028] The curvature adaptation component 4 further includes an actuator cylinder 404 fixedly installed on the positioning block 1. A sealing block 405 is slidably installed in the actuator cylinder 404. An actuator rod 406 is fixedly installed on the sealing block 405. The actuator rod 406 penetrates one end of the actuator cylinder 404 and is fixedly connected to the guide ring 2. Both ends of the actuator cylinder 404 and the chord length tube 401 are connected through a pipeline 407. The pipeline 407, the actuator cylinder 404, and the chord length tube 401 are all filled with a hydraulic medium. The hydraulic medium is a liquid that cannot be compressed in the current working environment. When the chord length changes, the plug block 402 will slide inside the chord length tube 401. The movement of the plug block 402 will squeeze the hydraulic medium on one side of the chord length tube 401 and extract the hydraulic medium on the other side. Through the setting of the pipeline 407, the squeezed hydraulic medium will flow into one side of the actuator cylinder 404 and extract the hydraulic medium on the other side of the actuator cylinder 404. During this process, the sealing block 405 will be driven to move up and down, thereby driving the guide ring 2 to move. The effect of automatically changing the distance between the guide ring 2 and the positioning block 1 can be achieved, without manual adjustment one by one, effectively improving the adjustment efficiency and ensuring the effect.
[0029] As Figures 6 to 13 shown, in this embodiment, a scaling and fastening component 5 is installed on multiple positioning blocks 1. The scaling and fastening component 5 drives the multiple positioning blocks 1 to be attached and fixed to the surface of the pipe 10 in a circumferential array. The circles of the multiple positioning blocks 1 coincide with the pipe 10. By attaching and fixing the positioning blocks 1 to the surface of the pipe 10 in a circumferential array, that is, making the positioning blocks 1 fit the pipe 10 while ensuring that the angle between adjacent two positioning blocks 1 remains unchanged, the center of the circle formed by the positioning blocks 1 can be positioned. Combining with the curvature adaptation component 4, the center of the circle formed by multiple guide rings 2 can be positioned.
[0030] Further, the scaling and fastening component 5 includes two connecting rods 501 rotatably mounted on the connecting block 3. The connecting rods 501 and the connecting block 3 are detachably connected. Two adjacent connecting rods 501 on the two connecting blocks 3 are rotatably connected. A pull rod assembly is installed between the two rotatably connected connecting rods 501. The pull rod assembly adjusts the angle between the two connecting rods 501. By synchronously adjusting the lengths of multiple pull rod assemblies, the connecting rods 501 can be driven to apply a pulling force or a pressing force on the positioning block 1, so that multiple positioning blocks 1 can be contracted or expanded.
[0031] Among them, the pull rod assembly includes a sleeve rod 502 rotatably mounted on one of the connecting rods 501. A sealing plate 503 is slidably mounted in the sleeve rod 502. A connecting rod 504 is fixedly mounted on the sealing plate 503. The connecting rod 504 is rotatably connected to the other connecting rod 501. A driving module for driving multiple connecting rods 504 to move synchronously and keeping the lengths of multiple pull rod assemblies equal is connected to the pull rod assembly. When the sealing plate 503 moves along the sleeve rod 502, the connecting rod 504 can be driven to move, and then the total length of the connecting rod 504 and the sleeve rod 502, that is, the total length of the pull rod assembly, can be adjusted. Further, the connecting rod 501 can be driven to rotate, and then the connecting rod 501 drives the positioning block 1 to move.
[0032] Furthermore, the driving module includes a driving box 505. A plurality of partition plates 506 are fixedly mounted in the driving box 505. The partition plates 506 divide the driving box 505 into a plurality of driving grooves 507. The driving grooves 507 correspond to the sleeve rods 502 one by one. A plug 508 is slidably mounted in the driving groove 507. A driving rod 509 is fixedly mounted on the plug 508. The driving rod 509 penetrates through one side of the driving box 505 and extends to the outside of the driving box 505. A synchronous plate 510 is fixedly mounted on the plurality of driving rods 509. A first linear motor 511 is fixedly mounted on the driving box 505. The output shaft of the first linear motor 511 is fixedly connected to the synchronous plate 510. By means of the first linear motor 511, the synchronous plate 510 can be driven to move, and then multiple driving rods 509 can be driven to move. The moving driving rod 509 will drive the plug 508 to move, and then the volume on both sides of the plug 508 can be adjusted.
[0033] It is worth noting that both ends of the driving groove 507 are provided with connecting heads 512, and transmission pipes 513 are fixedly installed on the connecting heads 512. Sealing split parts 6 are installed on both ends of the sleeve rod 502. The transmission pipes 513 correspond to the sealing split parts 6 one by one. The transmission pipes 513 are connected with both ends of the sleeve rod 502 through the sealing split parts 6. The sleeve rod 502, the sealing split parts 6, the driving groove 507 and the transmission pipe 513 are all filled with hydraulic medium. By conveying the hydraulic medium through the transmission pipe 513, the multiple sealing plates 503 can be driven to move when the plug 508 moves, and then the lengths of the multiple pull rod assemblies can be synchronously adjusted, so that the multiple positioning blocks 1 can be synchronously contracted or expanded, so that the positioning blocks 1 fit on the pipeline 10.
[0034] like Figures 13 to 14 As shown, in this embodiment, in order to facilitate the disassembly of the entire device into multiple modules for easy carrying and assembly, the transmission tube 513 needs to be disassembled. During disassembly, the transmission medium may leak, which will reduce the stability of the drive module transmission. This problem can be prevented by sealing the split part 6.
[0035] Furthermore, the sealing split part 6 includes two detachably connected guide boxes 601, and the detachable connection method adopts the existing technology and is not described in detail here. A flow hole 602 is provided in the guide box 601, one of the flow holes 602 is connected to the sleeve rod 502, and the other flow hole 602 is connected to the transmission tube 513. A pressure plate 603 is slidably installed at one end of the flow hole 602, and the end surface of the pressure plate 603 is coplanar with the end surface of the guide box 601. A pull rod 604 is fixedly installed on the pressure plate 603, and the pull rod 604 extends to the outside of the guide box 601. A rubber sheet 605 is fixedly installed at one end of the pressure plate 603, and a rubber pad 6 is fixedly installed at the bottom of the pressure plate 603 of the guide box 601. 06. When disassembling, the two guide boxes 601 need to be separated. First, the pull rod 604 needs to be pressed, which will drive the pressure plate 603 to move downward. At this time, the transmission medium between the two guide boxes 601 will be squeezed under the action of the pressure plate 603, and the squeezed transmission medium will move to both sides. When the pressure plate 603 contacts the rubber pad 606, the gap between the two guide boxes 601 will be completely blocked. At this time, the two guide boxes 601 can be separated to prevent the transmission medium from leaking, and the rubber sheet 605 is used to seal the two pressure plates 603 to further prevent the leakage of hydraulic medium at the connection between the two guide boxes 601.
[0036] like Figure 1As shown, in this embodiment, centering blocks 9 are fixedly installed on a plurality of guide rings 2, and the centering blocks 9 on two guide rail modules correspond to each other one by one and are detachably installed with centering rods 901. When installing, the two guide rail modules need to be installed on two pipes respectively. At this time, by inserting the centering rods 901 into the centering blocks 9, when the scaling and fastening member 5 gradually tightens, the two pipes 10 can be pulled to the coaxial position.
[0037] In this embodiment, the two guide rail modules are respectively installed on two pipes. At this time, the centering rods 901 are inserted into the centering blocks 9, and the support member 7 is installed between the two guide rail modules. Subsequently, the two groups of guide rail modules are respectively fixed on the two pipes 10 through the scaling and fastening member 5, and under the action of the centering rods 901, the two pipes 10 are moved to the coaxial position. During this process, the distance between the positioning block 1 and the guide ring 2 is adjusted by the curvature adaptation member 4 so that the center of the guide ring 2 will also coincide with the center of the pipe 10. Subsequently, the automatic welding vehicle 8 is driven by the driving assembly to move along the chute 201, and thus the automatic welding vehicle 8 can perform a circular motion along the pipe 10 to complete the welding operation of the entire circumference of the pipe 10.
[0038] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. An automatic welding device for pipe butt welds, characterized in that: include: Two groups of guide rail modules, one group of the guide rail modules comprises a plurality of positioning blocks (1), a guide ring (2) is mounted on the positioning block (1), and the positioning block (1) and the guide ring (2) are concentrically arranged; A plurality of the positioning blocks (1) are mounted with a zoom fastening component (5), the zoom fastening component (5) driving the plurality of positioning blocks (1) to be attached to and fixed on the surface of the pipe (10) in a circular array, the circular shape of the plurality of positioning blocks (1) being coincident with the pipe (10); A curvature adaptation component (4), the curvature adaptation component (4) being installed between the positioning block (1) and the guide ring (2), and the curvature adaptation component (4) adjusting the center of the guide ring (2) to a position that coincides with the center of the pipe (10) according to the distance between two adjacent positioning blocks (1).
2. The automatic pipe butt weld welding device according to claim 1 is characterized in that: Connecting blocks (3) are rotatably mounted on both sides of the positioning block (1); the curvature adaptation component comprises a chord tube (401) fixedly mounted on one of the connecting blocks (3) on the positioning block (1); a blocking block (402) is slidably mounted in the chord tube (401); a connecting rod (403) is fixedly mounted on the blocking block (402); the connecting rod (403) passes through one end of the chord tube (401) and is fixedly connected to an adjacent connecting block (3).
3. The automatic pipe butt weld welding device according to claim 2 is characterized in that: The curvature adaptation component (4) further comprises an actuator cylinder (404) fixedly mounted on the positioning block (1), a sealing block (405) being slidably mounted in the actuator cylinder (404), an actuator rod (406) being fixedly mounted on the sealing block (405), the actuator rod (406) passing through one end of the actuator cylinder (404) and being fixedly connected to the guide ring (2), the actuator cylinder (404) and both ends of the chord-length tube (401) being connected via a pipeline (407), and the pipeline (407), the actuator cylinder (404) and the chord-length tube (401) are all filled with hydraulic medium.
4. The automatic pipe butt weld welding device according to claim 3 is characterized in that: The zoom fastening component (5) comprises two connecting rods (501) rotatably mounted on the connecting block (3); two adjacent connecting rods (501) located on the two connecting blocks (3) are rotatably connected; a pull rod assembly is installed between the two rotatably connected connecting rods (501); the pull rod assembly adjusts the angle between the two connecting rods (501).
5. The automatic pipe butt weld welding device according to claim 4 is characterized in that: The pull rod assembly comprises a sleeve rod (502) rotatably mounted on one of the connecting rods (501), a sealing plate (503) being slidably mounted inside the sleeve rod (502), a connecting rod (504) being fixedly mounted on the sealing plate (503), the connecting rod (504) being rotatably connected to another connecting rod (501), and a driving module for driving a plurality of the connecting rods (504) to move synchronously and keeping the lengths of the plurality of pull rod assemblies equal is connected to the pull rod assembly.
6. The automatic pipe butt weld welding device according to claim 5, characterized in that: The driving module comprises a driving box (505), wherein a plurality of partitions (506) are fixedly installed in the driving box (505), wherein the partitions (506) divide the driving box (505) into a plurality of driving slots (507), wherein the driving slots (507) correspond to the sleeve rods (502) one by one, wherein plugs (508) are slidably installed in the driving slots (507), wherein a driving rod (509) is fixedly installed on the plugs (508), wherein the driving rod (509) passes through one side of the driving box (505) and extends to the outside of the driving box (505), wherein a synchronization plate (510) is fixedly installed on the plurality of driving rods (509), wherein a first linear motor (511) is fixedly installed on the driving box (505), wherein an output shaft of the first linear motor (511) is fixedly connected to the synchronization plate (510); Both ends of the driving groove (507) are provided with connecting heads (512), and a transmission tube (513) is fixedly installed on the connecting heads (512). Both ends of the sleeve rod (502) are installed with sealing split parts (6), and the transmission tube (513) corresponds to the sealing split parts (6) one by one. The transmission tube (513) is connected to both ends of the sleeve rod (502) through the sealing split parts (6), and the sleeve rod (502), the sealing split parts (6), the driving groove (507) and the transmission tube (513) are all filled with hydraulic medium.
7. The automatic pipe butt weld welding device according to claim 6, characterized in that: The sealing split component (6) includes two detachably connected guide boxes (601), and a flow hole (602) is provided in the guide box (601), wherein one of the flow holes (602) is connected to the sleeve rod (502), and the other flow hole (602) is connected to the transmission tube (513), and a pressure plate (603) is slidably installed at one end of the flow hole (602), and the end surface of the pressure plate (603) is coplanar with the end surface of the guide box (601), a pull rod (604) is fixedly installed on the pressure plate (603), and the pull rod (604) extends to the outside of the guide box (601), a rubber sheet (605) is fixedly installed at one end of the pressure plate (603), and a rubber pad (606) is fixedly installed at the bottom of the pressure plate (603) of the guide box (601).
8. The automatic pipe butt weld welding device according to claim 7, characterized in that: A slide groove (201) is provided on the guide ring (2), a support member (7) is installed between the two guide rail modules, the support member (7) is slidably connected to the slide groove (201), an automatic welding vehicle (8) is fixedly installed on the support member (7), the support member (7) comprises a mounting plate (701) slidably connected to the slide groove (201), a slide bar (702) is slidably installed on the mounting plate (701), a base plate (703) is fixedly installed on the slide bar (702), the base plate (703) is fixedly connected to the automatic welding vehicle (8), a second linear motor (704) is fixedly installed on the mounting plate (701), an output shaft of the second linear motor (704) is fixedly connected to the base plate (703), and drive components are fixedly installed on both sides of the mounting plate (701), and the drive components drive the mounting plate (701) to move along the slide groove (201).
9. The automatic pipe butt weld welding device according to claim 8, characterized in that: The driving assembly comprises two rollers (705) rotatably mounted on a mounting plate (701), the two rollers (705) being located on both sides of the slide groove (201), the two rollers (705) being fixedly mounted with mutually meshing gears (706), the mounting plate (701) being fixedly mounted with a motor (707), the output shaft of the motor (707) being fixedly connected to one of the gears (706).
10. The automatic pipe butt weld welding device according to claim 9, characterized in that: A plurality of the guide rings (2) are fixedly mounted with centering blocks (9), and the centering blocks (9) on the two guide rail modules correspond to each other and are detachably mounted with centering rods (901).