Pipeline welding device

Abstract

The utility model relates to the technical field of pipeline welding, in particular to a pipeline welding device which comprises a welding trolley, an annular guide rail and a ring adjusting mechanism. The welding trolley is adsorbed to the outer side of the annular guide rail and slidably connected with the annular guide rail in the circumferential direction of the annular guide rail. A fracture is axially formed in the annular guide rail, and the ring adjusting mechanism is used for annularly splicing the annular guide rail and adjusting the size of the fracture; a plurality of pressing mechanisms are fixedly arranged on the inner side of the annular guide rail in the circumferential direction and used for abutting against a pipeline. An opening is formed in the end, close to the pipeline, of the pressing mechanism, a walking part is slidably arranged in the pressing mechanism, one end of the walking part is elastically connected with the pressing mechanism through an elastic connecting piece, and the other end of the walking part extends out of the pressing mechanism through the opening. The sliding length of the walking part in the pressing mechanism is larger than or equal to the length of the walking part extending out of the pressing mechanism. And through mutual cooperation of the ring adjusting mechanism and the pressing mechanism, flexible walking can be achieved on the basis that the welding work stability is guaranteed.

Description

Technical Field

[0001] This application relates to the field of pipeline welding technology, and in particular to a pipeline welding apparatus. Background Technology

[0002] A welding carriage is an automated device used for pipe welding. It features a welding torch mounting station, a wire feeding mechanism, and a welding power source, enabling it to automatically complete welding tasks according to preset welding parameters, including root pass, fill pass, and cover pass welding. The welding carriage is typically mounted on a circular guide rail and moves circumferentially along it to butt weld pipe joints. Wheels are located on the inner side of the circular guide rail. After completing the current welding task, the welding carriage can follow the circular guide rail and move axially along the pipe to the next welding station, driven by the wheels. While the wheels meet the axial movement requirements of the welding device, the axial movement of the welding torch during welding can cause the welding carriage to wobble, leading to deviations in weld position and dimensions, thus affecting weld quality.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0004] The purpose of this application is to provide a pipe welding apparatus to solve or alleviate the problems existing in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A pipe welding apparatus, the pipe welding apparatus comprising a welding trolley, an annular guide rail, and an adjusting mechanism;

[0007] The welding carriage is attached to the outside of the annular guide rail, and the welding carriage is slidably connected to the annular guide rail along the circumference of the annular guide rail.

[0008] The annular guide rail has an axial break, and the adjusting mechanism is used to splice the annular guide rail in the circumferential direction and adjust the size of the break.

[0009] The inner circumferential side of the annular guide rail is fixed with multiple clamping mechanisms for abutting against the pipe;

[0010] The clamping mechanism has an opening at one end near the pipe, and a traveling part is slidably provided in the clamping mechanism. One end of the traveling part is elastically connected to the clamping mechanism through an elastic connector, and the other end extends out of the clamping mechanism through the opening.

[0011] The sliding length of the walking part in the clamping mechanism is greater than or equal to the length of the walking part extending out of the clamping mechanism.

[0012] Preferably, the outer side of the annular guide rail has through holes corresponding to the clamping mechanisms; the clamping mechanism has an adjustment cavity at the end away from the pipe and a movable cavity at the end closer to the pipe; the movable cavity and the adjustment cavity are movably separated by a partition.

[0013] The adjustment cavity is provided with a fixed plate and a first adjustment component, and the elastic connector and the walking part are disposed in the movable cavity;

[0014] The fixing plate is fixedly installed in the adjustment cavity. One end of the first adjusting member passes through the through hole and the fixing plate in sequence and then abuts against the partition. The first adjusting member is threadedly connected to the partition. One end of the elastic connecting member is connected to the partition, and the other end is connected to the walking part.

[0015] Preferably, the walking part is a ball bearing structure, and the end of the clamping mechanism with an opening is an inverted conical structure.

[0016] Preferably, the adjusting mechanism includes a second adjusting member and fasteners and locking blocks disposed circumferentially at both ends of the break;

[0017] One end of the fastener is rotatably connected to the annular guide rail, and the other end is provided with a sliding groove for the locking block to slide circumferentially; the locking block is fixedly connected to the annular guide rail.

[0018] The second adjusting member passes through the other end of the fastener and extends into the slide groove. The second adjusting member abuts against the locking block and is threadedly connected to the fastener.

[0019] Preferably, the adjusting mechanism is symmetrically arranged on both sides of the annular guide rail along its axial direction.

[0020] Preferably, the annular guide rail includes a first wing plate, a second wing plate, and a guide rail body, wherein the first wing plate and the second wing plate extend axially along the guide rail body and are fixedly connected to the guide rail body.

[0021] The locking block is fixedly mounted on the first wing plate, and the fastener is rotatably mounted on the second wing plate; the first wing plate and the second wing plate are respectively disposed at both ends of the break along the circumferential direction.

[0022] Preferably, the annular guide rail further includes a first connecting block and a second connecting block;

[0023] The first wing plate and the second wing plate are fixedly connected to the inner side of the guide rail body through the first connecting block and the second connecting block, respectively.

[0024] Preferably, the bottom of the welding trolley is rotatably connected to a guide mechanism, which is engaged with both sides of the guide rail body along the axial direction and is slidably connected to the guide rail body along the circumferential direction.

[0025] Preferably, the guiding mechanism includes a guide wheel and a connecting rod;

[0026] The guide wheel is rotatably mounted on one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the welding trolley;

[0027] The guide wheel has a groove in its circumference, and the groove engages with the side of the guide rail body in the axial direction.

[0028] Compared with the closest prior art, the technical solution of this application has the following beneficial effects:

[0029] 1. The adjusting mechanism connects the ends on both sides of the break along the circumferential direction to splice the ring guide rail into shape, and adapts to the welding requirements of pipes of different sizes by controlling the circumferential dimension of the break.

[0030] 2. The adjusting mechanism and the clamping mechanism work together to achieve convenient adjustment of the positioning and walking state of the ring guide rail on pipes of different sizes through the elastic connection of the elastic connector. While ensuring the stability of welding work, it can also achieve flexible movement. Attached Figure Description

[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein:

[0032] Figure 1 A side view of a pipe welding apparatus provided according to some embodiments of this application;

[0033] Figure 2 A front view of a pipe welding apparatus provided according to some embodiments of this application;

[0034] Figure 3 This is a diagram showing the walking state of the clamping mechanism according to some embodiments of this application;

[0035] Figure 4 This is a positioning diagram of the clamping mechanism according to some embodiments of this application;

[0036] Figure 5 for Figure 1 Enlarged view of a portion of point A in the middle;

[0037] Figure 6 for Figure 2 Enlarged view of a section at point B in the middle;

[0038] Figure 7 for Figure 1 Enlarged view of a section at point C.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Guide rail body; 2. Welding trolley; 3. Clamping mechanism; 4. Traveling part; 5. Guiding mechanism; 6. Guide wheel; 7. Connecting rod; 8. Fastener; 9. Locking block; 10. First adjusting component; 11. Second adjusting component; 12. First connecting block; 13. Second connecting block; 14. First wing plate; 15. Second wing plate; 16. Fixing plate; 17. Partition plate; 18. Elastic connecting component; 19. Pipeline. Detailed Implementation

[0041] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0042] In the following description, the terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to limit this disclosure.

[0044] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; direct connections or indirect connections through intermediate components; wired connections, radio connections, or wireless communication signal connections. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0045] The following will be combined with the appendix Figure 1-7 A pipe welding apparatus of this application will be described in further detail.

[0046] A pipe welding device includes a welding trolley 2, an annular guide rail, and an adjusting mechanism.

[0047] The welding carriage 2 is attached to the outside of the annular guide rail, and the welding carriage 2 is slidably connected to the annular guide rail along the circumference of the annular guide rail.

[0048] The annular guide rail has an axial break, and the adjusting mechanism is used to splice the annular guide rail in the circumferential direction and adjust the size of the break.

[0049] Multiple clamping mechanisms 3 are fixedly provided on the inner circumferential side of the annular guide rail to abut against the pipe 19;

[0050] The clamping mechanism 3 has an opening at one end near the pipe 19. A traveling part 4 is slidably provided in the clamping mechanism 3. One end of the traveling part 4 is elastically connected to the clamping mechanism 3 through an elastic connector 18, and the other end extends out of the clamping mechanism 3 through the opening.

[0051] The sliding length of the walking part 4 in the pressing mechanism 3 is greater than or equal to the length of the walking part 4 extending out of the pressing mechanism 3.

[0052] In a specific embodiment of this application, the welding carriage 2 is equipped with a double permanent magnet adsorption wheel set, which is magnetically adsorbed onto the outside of the annular guide rail. The welding carriage 2 body contains components such as a drive motor, a travel drive gear, and a drive screw. The drive motor meshes with the drive screw through the travel drive gear, causing the drive screw to rotate. The rotation of the drive screw further drives the driven gear meshing with it. The driven gear is fixed on the permanent magnet driven shaft, thereby driving the drive wheels at both ends of the permanent magnet driven shaft to rotate, realizing the movement of the welding carriage 2 along the annular guide rail. The adsorption and driving mechanism of the permanent magnet adsorption wheel set is prior art and will not be described in detail here.

[0053] The ends of the ring guide rail break on both sides form a "convex-concave fit". The adjusting mechanism connects the ends of the two sides of the break along the circumferential direction to splice the ring guide rail into shape. By controlling the circumferential dimension of the break, it can adapt to the welding requirements of pipes of different sizes.

[0054] Multiple clamping mechanisms 3 are evenly spaced and arranged circumferentially on the inner side of the annular guide rail near the pipe 19. The clamping mechanisms 3 abut against the pipe 19 radially. The multiple clamping mechanisms 3 together form an annular abutment against the pipe 19. The traveling part 4 is slidably arranged in the clamping mechanism 3 along the pipe 19 radially. The end of the traveling part 4 away from the pipe 19 is elastically connected to the clamping mechanism 3 through an elastic connector 18. The end of the traveling part 4 near the pipe 19 extends out from the opening of the clamping mechanism 3.

[0055] When welding is being performed and the position of the annular guide rail needs to be fixed, the adjusting mechanism reduces the circumferential dimension of the annular guide rail break and shrinks the annular guide rail diameter. The clamping mechanism 3, located inside the annular guide rail, radially compresses the pipe 19. Under the compression action, the traveling part 4 slides radially into the clamping mechanism 3 until the traveling part 4 is completely inside the clamping mechanism 3. The clamping mechanism 3 then abuts against the pipe 19, thereby fixing the position of the annular guide rail.

[0056] When the current welding work is completed and it is necessary to travel along the axial direction of the pipe 19, the adjusting mechanism increases the circumferential dimension of the annular guide rail break and expands the diameter of the annular guide rail. The clamping mechanism 3, which is set inside the annular guide rail, moves radially away from the pipe 19. Under the action of the elastic connector 18, the traveling part 4 slides radially outward from the clamping mechanism 3 until the traveling part 4 extends out from the opening of the clamping mechanism 3. The traveling part 4 abuts against the pipe 19, and the annular guide rail moves axially under the action of the traveling part 4.

[0057] In a specific embodiment of this application, the outer surface of the annular guide rail is provided with diamond-shaped anti-slip texture.

[0058] In a specific embodiment of this application, the side of the opening of the clamping mechanism 3 near the pipe 19 is provided with an elastic anti-slip material.

[0059] The outer side of the annular guide rail has through holes corresponding to the clamping mechanism 3; the clamping mechanism 3 has an adjustment cavity at the end away from the pipe 19 and a movable cavity at the end closer to the pipe 19; the movable cavity and the adjustment cavity are movably separated by a partition 17.

[0060] The adjustment cavity is provided with a fixed plate 16, a first adjustment component 10, an elastic connector 18, and a walking part 4, which are disposed in the movable cavity.

[0061] The fixed plate 16 is fixedly installed in the adjustment cavity. One end of the first adjusting member 10 passes through the through hole and the fixed plate 16 in sequence and then abuts against the partition 17. The first adjusting member 10 is threadedly connected to the partition 17. One end of the elastic connecting member 18 is connected to the partition 17, and the other end is connected to the walking part 4.

[0062] In a specific embodiment of this application, the elastic connector 18 is a spring. By turning the first adjusting member 10, in conjunction with the elastic action of the elastic connector 18, the position of the partition 17 in the pressing mechanism 3 can be adjusted, thereby realizing the adjustment of the elastic force of the elastic connector 18 to meet the different requirements of the elastic force of the elastic connector 18 when the walking part 4 walks stably under different positions and different force conditions.

[0063] The traveling part 4 has a ball bearing structure, and the clamping mechanism 3 has an inverted conical structure at one end with an opening.

[0064] By setting the traveling part 4 as a ball bearing structure, the axial movement of the annular guide rail can be achieved, as well as its circumferential rotation. The inverted conical structure at the opening of the clamping mechanism 3 can, on the one hand, stably clamp the traveling part 4 and prevent it from coming out of the clamping mechanism 3; on the other hand, it can also limit the circumferential movement of the traveling part 4, ensuring that the annular guide rail moves stably under the action of the traveling part 4.

[0065] The adjusting mechanism includes a second adjusting component 11 and fasteners 8 and locking blocks 9 disposed at both ends of the break along the circumferential direction;

[0066] One end of the fastener 8 is rotatably connected to the annular guide rail, and the other end is provided with a sliding groove for the locking block 9 to slide circumferentially; the locking block 9 is fixedly connected to the annular guide rail.

[0067] The second adjusting member 11 passes through the other end of the fastener 8 and extends into the slide groove. The second adjusting member 11 abuts against the locking block 9 and is threadedly connected to the fastener 8.

[0068] In a specific embodiment of this application, one end of the fastener 8 is rotatably connected to a rotating seat fixed on the same side, and the other end of the fastener 8 is provided with a sliding groove that runs radially through the pipe 19. The locking block 9 is slidably disposed in the sliding groove along the circumference of the pipe 19. The second adjusting member 11 passes through the end face of the other end of the fastener 8, extends into the sliding groove, and abuts against the locking block 9. The second adjusting member 11 is threadedly connected to the other end of the fastener 8.

[0069] When the diameter of the annular guide rail needs to be adjusted, the second adjusting component 11 is turned. Under the pushing action of the second adjusting component 11 and the elastic action of the elastic connecting component 18, the locking block 9 slides circumferentially along the slide groove, thereby causing the annular guide rails at both ends of the break to move closer and further apart, thus realizing the adjustment of the diameter of the annular guide rail.

[0070] To improve the diameter adjustment effect of the adjusting mechanism on the annular guide rail, the adjusting mechanism is symmetrically arranged on both sides of the annular guide rail along its axial direction.

[0071] The annular guide rail includes a first wing plate 14, a second wing plate 15, and a guide rail body 1. The first wing plate 14 and the second wing plate 15 extend along the axial direction of the guide rail body 1 and are fixedly connected to the guide rail body 1.

[0072] The locking block 9 is fixedly mounted on the first wing plate 14, and the fastener 8 is rotatably mounted on the second wing plate 15; the first wing plate 14 and the second wing plate 15 are respectively located at both ends of the break along the circumferential direction.

[0073] In a specific embodiment of this application, the welding carriage 2 slides circumferentially along the guide rail body 1. The first wing plate 14 and the second wing plate 15 are fixedly connected to the guide rail body 1 at both ends of the circumferential direction of the fracture, and extend further outward along the axial direction of the guide rail body 1 to reserve space for the installation of the locking block 9, the fastener 8 and the rotating seat, respectively, so as to avoid affecting the circumferential sliding of the welding carriage 2.

[0074] In other embodiments of this application, the fastener 8 and the locking block 9 are directly disposed on the outer surface of the annular guide rail at both ends of the circumferential direction of the break, but the placement of the fastener 8 and the locking block 9 needs to be determined in conjunction with the position of the bottom wheel assembly being welded.

[0075] The circular guide rail also includes a first connecting block 12 and a second connecting block 13;

[0076] The first wing plate 14 and the second wing plate 15 are fixedly connected to the inner side of the guide rail body 1 through the first connecting block 12 and the second connecting block 13, respectively.

[0077] In a specific embodiment of this application, to further avoid interference with the welding operation of the welding carriage 2, a first connecting block 12 and a second connecting block 13 extending radially along the pipe 19 are respectively provided on the inner side of the guide rail body 1 at both ends of the fracture circumferential direction. A first wing plate 14 and a second wing plate 15 are fixedly connected to the first connecting block 12 and the second connecting block 13, respectively, and extend further outward along the axial direction of the guide rail body 1. The radial dimensions of the first connecting block 12 and the second connecting block 13 are less than or equal to the radial dimension of the clamping mechanism 3.

[0078] In other embodiments of this application, the first wing plate 14 and the second wing plate 15 are fixedly connected to the axial sides of the guide rail body 1 at both ends of the break.

[0079] The bottom of the welding trolley 2 is rotatably connected to a guide mechanism 5, which is engaged on both sides of the guide rail body 1 along the axial direction and is slidably connected to the guide rail body 1 along the circumferential direction.

[0080] In a specific embodiment of this application, one end of the guide mechanism 5 is rotatably connected to the bottom of both sides of the welding carriage 2 along the axial direction of the pipe 19. By rotating, it can adapt to the snap-fit ​​requirements of annular guide rails of different diameters. The other end of the guide mechanism 5 is snap-fitted to both sides of the guide rail body 1 along the axial direction to further limit the path of the welding carriage 2 sliding along the circumferential direction of the guide rail body 1. At the same time, the snap-fit ​​cooperation between the guide mechanism 5 and the guide rail body 1 can also prevent the welding carriage 2 from falling off the guide rail body 1 and avoid damage to the device.

[0081] The guiding mechanism 5 includes a guide wheel 6 and a connecting rod 7;

[0082] The guide wheel 6 is rotatably mounted on one end of the connecting rod 7, and the other end of the connecting rod 7 is rotatably connected to the welding carriage 2;

[0083] The guide wheel 6 has a groove in its circumference, and the groove engages with the side of the guide rail body 1 in the axial direction.

[0084] In a specific embodiment of this application, in order to reduce the sliding friction of the guide mechanism 5, a guide wheel 6 with a groove in the circumferential direction is provided and slidably connected to the guide rail body 1. The guide wheel 6 is coaxially arranged with the connecting rod 7 and rotates around the axis when the welding carriage 2 slides along the circumferential direction of the guide rail body 1.

[0085] In other embodiments of this application, a U-shaped plate is provided to be slidably connected to the guide rail body 1, and the U-shaped plate is engaged with the axial side of the guide rail body 1 through a U-shaped groove.

[0086] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pipe welding apparatus, characterized in that, The pipeline welding device includes a welding trolley, a ring guide rail, and an adjusting mechanism; The welding carriage is attached to the outside of the annular guide rail, and the welding carriage is slidably connected to the annular guide rail along the circumference of the annular guide rail. The annular guide rail has an axial break, and the adjusting mechanism is used to splice the annular guide rail in the circumferential direction and adjust the size of the break. The inner circumferential side of the annular guide rail is fixed with multiple clamping mechanisms for abutting against the pipe; The clamping mechanism has an opening at one end near the pipe, and a traveling part is slidably provided in the clamping mechanism. One end of the traveling part is elastically connected to the clamping mechanism through an elastic connector, and the other end extends out of the clamping mechanism through the opening. The sliding length of the walking part in the clamping mechanism is greater than or equal to the length of the walking part extending out of the clamping mechanism.

2. The pipe welding apparatus as described in claim 1, characterized in that, The outer side of the annular guide rail has through holes corresponding to the clamping mechanism; the clamping mechanism has an adjustment cavity at the end away from the pipe and a movable cavity at the end closer to the pipe; the movable cavity and the adjustment cavity are movably separated by a partition. The adjustment cavity is provided with a fixed plate and a first adjustment component, and the elastic connector and the walking part are disposed in the movable cavity; The fixing plate is fixedly installed in the adjustment cavity. One end of the first adjusting member passes through the through hole and the fixing plate in sequence and then abuts against the partition. The first adjusting member is threadedly connected to the partition. One end of the elastic connecting member is connected to the partition, and the other end is connected to the walking part.

3. The pipe welding apparatus as described in claim 1, characterized in that, The walking part has a ball bearing structure, and the end of the clamping mechanism with an opening has an inverted conical structure.

4. The pipe welding apparatus as described in claim 1, characterized in that, The adjusting mechanism includes a second adjusting component and fasteners and locking blocks disposed circumferentially at both ends of the break. One end of the fastener is rotatably connected to the annular guide rail, and the other end is provided with a sliding groove for the locking block to slide circumferentially; the locking block is fixedly connected to the annular guide rail. The second adjusting member passes through the other end of the fastener and extends into the slide groove. The second adjusting member abuts against the locking block and is threadedly connected to the fastener.

5. A pipe welding apparatus as described in claim 4, characterized in that, The adjusting mechanism is symmetrically arranged on both sides of the annular guide rail along its axial direction.

6. A pipe welding apparatus as described in claim 4, characterized in that, The annular guide rail includes a first wing plate, a second wing plate, and a guide rail body. The first wing plate and the second wing plate extend axially along the guide rail body and are fixedly connected to the guide rail body. The locking block is fixedly mounted on the first wing plate, and the fastener is rotatably mounted on the second wing plate; the first wing plate and the second wing plate are respectively disposed at both ends of the break along the circumferential direction.

7. A pipe welding apparatus as described in claim 6, characterized in that, The annular guide rail also includes a first connecting block and a second connecting block; The first wing plate and the second wing plate are fixedly connected to the inner side of the guide rail body through the first connecting block and the second connecting block, respectively.

8. A pipe welding apparatus as described in claim 7, characterized in that, The bottom of the welding trolley is rotatably connected to a guide mechanism, which is engaged on both sides of the guide rail body along the axial direction and slidably connected to the guide rail body along the circumferential direction.

9. A pipe welding apparatus as described in claim 8, characterized in that, The guiding mechanism includes a guide wheel and a connecting rod; The guide wheel is rotatably mounted on one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the welding trolley; The guide wheel has a groove in its circumference, and the groove engages with the side of the guide rail body in the axial direction.

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