Hydraulic engineering pipeline welding device

Abstract

The application discloses a kind of hydraulic engineering pipeline welding devices, including pipeline positioning assembly, welding control assembly, mobile drive mechanism, equipment base, fixed operation cylinder and around transmission part.The application belongs to pipeline welding technical field;To improve the automation degree of hydraulic engineering pipeline welding process, the application proposes around transmission part and welding control assembly, after pipeline is positioned from inside by pipeline positioning assembly, mobile drive mechanism is started, welding control assembly is moved from the outside of pipeline, until it is stopped until the position that needs to be welded, since a plurality of touch switches are connected in series, only when all touch switches are triggered, welding gun will stop welding, ensure the quality of welding, ensure that welding gun around pipeline is welded 360 degrees, since welding control assembly is provided with three groups, so welding control assembly only needs to rotate 120 degrees to complete the welding of entire pipeline, complete automation operation.

Description

Technical Field

[0001] This invention belongs to the field of pipeline welding technology, specifically referring to a pipeline welding device for water conservancy projects. Background Technology

[0002] Water conservancy pipelines have a wide range of applications. In agricultural irrigation, they can draw water from reservoirs and rivers to farmland to meet the water needs of crops. In urban water supply systems, pipelines are responsible for delivering treated tap water to households to ensure residents' daily water needs. In addition, in drainage systems, pipelines are used to collect and discharge urban rainwater and sewage to prevent urban flooding and environmental pollution.

[0003] Existing water conservancy pipeline welding is usually done manually, requiring workers to use handheld welding torches to perform circumferential welding. This requires a high level of welding experience and is prone to errors. Existing automatic welding equipment also struggles to position the pipeline and achieve automatic control during the welding process. Therefore, it is necessary to propose a water conservancy pipeline welding device. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a hydraulic engineering pipeline welding device, which effectively solves the technical problems of difficulty in achieving automatic control, difficulty in pipeline positioning, and easy error in manual operation during the hydraulic engineering pipeline welding process.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a hydraulic engineering pipeline welding device, including a pipeline positioning component, a welding control component, a moving drive mechanism, an equipment base, a fixed operating cylinder, and a circumferential transmission component. The moving drive mechanism is disposed on the equipment base, the fixed operating cylinder is disposed on the moving drive mechanism, the circumferential transmission component is disposed on the fixed operating cylinder, the pipeline positioning component is disposed on the equipment base, and the welding control component is disposed on the circumferential transmission component. The pipeline positioning component is divided into two groups disposed on the equipment base, one group of pipeline positioning components is fixedly set, and the other group of pipeline positioning components is slidably set.

[0006] Preferably, the circumferential transmission component includes a circumferential guide groove, a touch switch, an internal sliding block, a side support plate, an arc-shaped connecting plate, a horizontal connecting frame, a circumferential motor, a circumferential gear, and a circumferential gear ring. The circumferential gear ring is disposed on the outer wall of the fixed operating cylinder, the circumferential gear meshes and drives on the circumferential gear ring, the output end of the circumferential motor is connected to the circumferential gear, one horizontal connecting frame is rotatably disposed on the ring gear, and another horizontal connecting frame is fixedly connected to the body of the circumferential motor. The side support plate is fixedly connected to the horizontal connecting frames at both ends, and there are three sets of side support plates. The circumferential guide groove is disposed at both ends of the fixed operating cylinder, the array of touch switches is disposed on the inner wall of the circumferential guide groove, the internal sliding block is fitted and slidably disposed in the circumferential guide groove, and the internal sliding block can contact the touch switch when sliding. The arc-shaped connecting plate is fixedly connected between adjacent side support plates, and the internal sliding block is fixedly connected to the side support plate.

[0007] Furthermore, the welding control assembly is provided in three sets. The welding control assembly includes a welding torch, an electric push rod, a welding adjustment support arm, an adjustment groove, an adjustment slider, an adjustment swing rod, a small spring, a secondary swing rod, an auxiliary swing rod, and a welding contact block. The welding adjustment support arm is fixed between the side support plates. The body of the electric push rod is located on the welding adjustment support arm. The adjustment groove is located on the welding adjustment support arm. The adjustment slider is fitted and slidably located on the adjustment groove. The adjustment swing rod is hinged to the adjustment slider. The adjustment swing rod has an internal spring rod. The auxiliary swing rod is hinged to the welding adjustment support arm. The welding contact block is located on the auxiliary swing rod. The secondary swing rod is hinged to the welding contact block. The internal spring rod slides through the secondary swing rod. The small spring is located between the adjustment swing rod and the secondary swing rod. The welding torch is embedded in the welding contact block. The output end of the electric push rod is located on the adjustment slider. The touch switch and the welding torch are electrically connected. Several sets of touch switches are connected in parallel. The touch switches are normally closed switches.

[0008] The pipeline positioning assembly includes a hydraulic lifting platform, a fixed ring, a fixed disc, a rotating adjusting ring, a side adjusting groove, an adjusting array groove, an adjusting column, an inner support curved arm, and an inner support sliding rail. The hydraulic lifting platform is mounted on the equipment base. One set of hydraulic lifting platforms on the left side is fixed, while the other set on the right side is slidable. The fixed ring and the fixed disc are fixed to the hydraulic lifting platform. The side adjusting groove is located on the fixed disc. The rotating adjusting ring is fitted and rotated on the fixed disc. The adjusting array groove is arranged in an array around the rotating adjusting ring. The inner support sliding rail is arranged in an array around the fixed disc. The inner support curved arm is fitted and slidably on the inner support sliding rail. The adjusting column is located on the inner support curved arm and is fitted and slidably in the adjusting array groove. Three sets of welded contact blocks for flexible positioning cooperate with the pipeline positioning assembly to accommodate pipelines of different diameters.

[0009] Furthermore, the rotating adjustment ring is provided with a rotating adjustment arm, which can pass through the side adjustment operation groove. The fixed ring and the fixed plate are provided with a push rod support, and the push rod support is provided with an inner support electric push rod. The rotating adjustment arm is hinged to the output end of the inner support electric push rod.

[0010] Furthermore, the mobile drive mechanism includes a horizontal rack, a moving gear, a gear support, and a mobile drive motor. The horizontal rack is fixed to the equipment base, the moving gear is meshed on the horizontal rack, the gear support is mounted on the moving gear, the moving gear is connected to the gear support via a shaft, the gear support is slidably fitted on the horizontal rack, the body of the mobile drive motor is mounted on the gear support, and the shaft of the moving gear is connected to the output end of the mobile drive motor.

[0011] Preferably, the welding contact block is equipped with an auxiliary bonding wheel for assisting bonding to the outer wall of the water conservancy project pipeline; the welding gun is equipped with a welding line for use with external welding equipment, and the welding line passes through the welding contact block and the welding adjustment support arm.

[0012] Furthermore, the fixed operating cylinder is fixed to the top of the gear bracket for easy movement; the equipment base is equipped with an electric push cylinder, the output end of which is connected to the hydraulic lifting platform of a set of pipeline positioning components on the right.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: This solution provides a hydraulic engineering pipeline welding device, which effectively solves the technical problems of difficulty in achieving automatic control, difficulty in pipeline positioning, and easy errors in manual operation during the hydraulic engineering pipeline welding process. This method brings the following advantages: (1) In order to improve the automation level of the pipeline welding process in water conservancy projects, this invention proposes a surrounding transmission component and a welding control component. After the pipeline is positioned from the inside by the pipeline positioning component, the moving drive mechanism is started to drive the welding control component to move from the outside of the pipeline until it moves to the position where welding is required and then stops. Since several sets of touch switches are connected in parallel, the welding gun will only stop welding when all the touch switches are triggered, which ensures the quality of welding and ensures that the welding gun welds around the pipeline 360 ​​degrees. Since the welding control component is provided in three sets, the welding control component only needs to rotate 120 degrees to complete the welding of the entire pipeline, thus completing the automated operation. (2) The installation of the pipe positioning component and the welding control component brings convenience to the positioning and welding of the pipe. The control of the inner support electric push rod causes the rotating adjustment arm to drive the rotating adjustment ring to rotate. Several sets of inner support curved arms can fix the pipe from the inside. The control of the hydraulic lifting platform drives the inner support curved arms to adjust the height so that the height of the pipe corresponds to that of the welding control component. The three sets of flexible positioning welding contact blocks cooperate with the pipe positioning component, so as to adapt to pipes of different diameters. (3) After the mobile drive motor is started, the mobile gear rotates and rolls horizontally along the horizontal rack. Then, the fixed operating cylinder moves synchronously through the gear bracket, thereby driving the welding control component and the welding torch to rotate around and weld the position on the pipeline that needs to be welded. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of a hydraulic engineering pipeline welding device provided by the present invention; Figure 2 Right view of the welding control assembly and the surrounding transmission component provided by the present invention; Figure 3 A schematic diagram of the internal structure of the welding control assembly and the surrounding transmission component provided by the present invention; Figure 4 A partial structural schematic diagram of the welding control component provided by the present invention; Figure 5 A perspective view of the pipe positioning assembly provided by the present invention; Figure 6 Right view of the pipe positioning assembly provided by the present invention; Figure 7 Front view of the fixed operating cylinder and the surrounding transmission component provided by the present invention; Figure 8 for Figure 3 A magnified view of part A.

[0015] Among them, 1. Pipe positioning assembly, 2. Welding control assembly, 3. Moving drive mechanism, 4. Equipment base, 5. Fixed operating cylinder, 6. Circular transmission component, 7. Circular guide groove, 8. Touch switch, 9. Internal sliding block, 10. Side support plate, 11. Arc-shaped connecting plate, 12. Horizontal connecting frame, 13. Circular motor, 14. Circular gear, 15. Circular gear ring, 16. Welding torch, 17. Electric push rod, 18. Welding adjustment support arm, 19. Adjustment slide, 20. Adjustment slider, 21. Adjustment swing rod, 22. Small 23. Spring, 24. Secondary swing arm, 25. Auxiliary swing arm, 26. Welded contact block, 27. Hydraulic lifting platform, 28. Fixed ring, 29. Fixed plate, 30. Rotating adjustment ring, 31. Side adjustment operating groove, 32. Adjustment array groove, 33. Adjustment column, 34. Inner support curved arm, 35. Inner support sliding rail, 36. Rotating adjustment arm, 37. Push rod support, 38. Inner support electric push rod, 49. Horizontal rack, 40. Moving gear, 41. Gear bracket, 42. Moving drive motor, 43. Auxiliary contact wheel, 44. Electric push cylinder.

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] like Figures 1-2 As shown, the present invention provides a hydraulic engineering pipeline welding device, including a pipeline positioning component 1, a welding control component 2, a moving drive mechanism 3, an equipment base 4, a fixed operating cylinder 5, and a circumferential transmission component 6. The moving drive mechanism 3 is horizontally slidably mounted on the equipment base 4, the fixed operating cylinder 5 is mounted on the moving drive mechanism 3, and the circumferential transmission component 6 is rotatably mounted on the fixed operating cylinder 5. The pipeline positioning component 1 is divided into two groups and mounted on the equipment base 4, one group of which is fixed and the other group of which is slidably mounted. The welding control component 2 is mounted on the circumferential transmission component 6.

[0020] like Figures 1-3 and Figures 7-8 As shown, the surrounding transmission component 6 includes a surrounding guide groove 7, a touch switch 8, an internal sliding block 9, a side support plate 10, an arc-shaped connecting plate 11, a horizontal connecting frame 12, a surrounding motor 13, a surrounding gear 14, and a surrounding gear ring 15. The surrounding gear ring 15 is disposed on the outer wall of the fixed operating cylinder 5. The surrounding gear 14 is meshed and driven on the surrounding gear ring 15. The output end of the surrounding motor 13 is connected to the surrounding gear 14. One of the horizontal connecting frames 12 is rotatably disposed on the ring gear 14, and the other horizontal connecting frame 12 is fixed to the ring gear 14. On the body of the motor 13, the side support plate 10 is fixed to the horizontal connecting frame 12 at both ends. The side support plate 10 is arranged in three sets around the fixed operating cylinder 5. The surrounding guide groove 7 is arranged at both ends of the fixed operating cylinder 5. The array of touch switches 8 is arranged on the inner wall of the surrounding guide groove 7. The internal sliding block 9 is fitted and slidably arranged in the surrounding guide groove 7. The internal sliding block 9 can contact the touch switch 8 when sliding. The arc-shaped connecting plate 11 is fixed between the adjacent side support plates 10. The internal sliding block 9 is fixed on the side support plate 10.

[0021] like Figure 2 and Figure 4 As shown, the welding control assembly 2 has three sets. The welding control assembly 2 includes a welding torch 16, an electric push rod 17, a welding adjustment support arm 18, an adjustment groove 19, an adjustment slider 20, an adjustment swing rod 21, a small spring 22, a secondary swing rod 23, an auxiliary swing rod 24, and a welding contact block 25. The welding adjustment support arm 18 is fixed between each pair of side support plates 10. The body of the electric push rod 17 is mounted on the welding adjustment support arm 18. The adjustment groove 19 is mounted on the welding adjustment support arm 18. The adjustment slider 20 is fitted and slidably mounted on the adjustment groove 19. The adjustment swing rod 21 is hinged to the adjustment slider 20. The adjusting swing rod 21 is equipped with an internal spring rod. The auxiliary swing rod 24 is hinged to the welding adjusting support arm 18. The welding contact block 25 is hinged to the bottom of the auxiliary swing rod 24. The secondary swing rod 23 is hinged to the welding contact block 25. The internal spring rod slides through the secondary swing rod 23. The small spring 22 is located between the adjusting swing rod 21 and the secondary swing rod 23. The welding torch 16 is embedded in the welding contact block 25. The output end of the electric push rod 17 is located on the adjusting slider 20. The touch switch 8 and the welding torch 16 are electrically connected. Several sets of touch switches 8 are connected in parallel. The touch switch 8 is a normally closed switch.

[0022] like Figure 1 , Figure 5 and Figure 6 As shown, the pipeline positioning assembly 1 includes a hydraulic lifting platform 26, a fixed ring 27, a fixed plate 28, a rotating adjusting ring 29, a side adjusting operating groove 30, an adjusting array groove 31, an adjusting column 32, an inner support curved arm 33, and an inner support sliding rail 34. The hydraulic lifting platform 26 is mounted on the equipment base 4. One set of hydraulic lifting platforms 26 on the left side is fixed, while the other set on the right side is slidable. The fixed ring 27 is fixedly connected to the hydraulic lifting platform 26, and the fixed plate 28 is fixedly connected to the hydraulic lifting platform 26. The fixed ring 27 and the fixed plate 28 are concentrically fitted together. The side adjusting operating groove 30 is located on the fixed plate 28, and the rotating adjusting ring 29 is fitted and rotatably mounted on the fixed plate 28. An array of grooves 31 is arranged around a rotating adjustment ring 29. Each set of adjustment array grooves 31 is radially arranged and has an arc structure facing the center of the rotating adjustment ring 29. An inner support sliding rail 34 is arranged around a fixed plate 28. An inner support curved arm 33 is fitted and slidably arranged on the inner support sliding rail 34. An adjustment column 32 is arranged on the inner support curved arm 33 and is fitted and slidably arranged in the adjustment array groove 31. A rotating adjustment arm 35 is provided on the rotating adjustment ring 29. The rotating adjustment arm 35 can pass through the side adjustment operation groove 30. A push rod support 36 is provided on the fixed ring 27 and the fixed plate 28. An inner support electric push rod 37 is provided on the push rod support 36. The rotating adjustment arm 35 is hinged to the output end of the inner support electric push rod 37.

[0023] like Figure 1As shown, the mobile drive mechanism 3 includes a horizontal rack 38, a moving gear 39, a gear bracket 40, and a mobile drive motor 41. The horizontal rack 38 is fixed to the equipment base 4. The moving gear 39 is meshed on the horizontal rack 38. The gear bracket 40 is disposed on the moving gear 39. The moving gear 39 is rotatably connected to the gear bracket 40 through a shaft. The gear bracket 40 is slidably fitted on the horizontal rack 38. The body of the mobile drive motor 41 is disposed on the gear bracket 40. The shaft of the moving gear 39 is connected to the output end of the mobile drive motor 41.

[0024] like Figure 4 As shown, the welding contact block 25 is equipped with an auxiliary bonding wheel 42 for assisting bonding to the outer wall of the water conservancy project pipeline; the welding gun 16 is equipped with a welding line and is used in conjunction with external welding equipment. The welding line passes through the welding contact block 25 and the welding adjustment support arm 18.

[0025] like Figure 1 As shown, the fixed operating cylinder 5 is fixed to the top of the gear bracket 40 for easy movement; the equipment base 4 is equipped with an electric push cylinder 43, and the output end of the electric push cylinder 43 is connected to the hydraulic lifting platform 26 of a set of pipe positioning components 1 on the right.

[0026] In practical use, the inner support electric push rod 37 is controlled, causing the rotating adjusting arm 35 to drive the rotating adjusting ring 29 to rotate. This, in turn, drives the adjusting column 32 to move through the adjusting array groove 31, thereby causing the inner support curved arm 33 to slide in the inner support sliding rail 34. Several sets of inner support curved arms 33 can fix the two pipe sections from the inside. The hydraulic lifting platform 26 is controlled to drive the inner support curved arm 33 to adjust its height so that the two pipe sections correspond to the height of the welding control component 2. The electric push cylinder 43 is activated, which drives the right-side pipe section to move through the right-side hydraulic lifting platform 26, thereby allowing the two pipe sections to be joined before welding. The three sets of flexible positioning welding contact blocks 25 cooperate with the pipe positioning component 1 to adapt to pipes of different diameters. After the moving drive motor 41 is activated, the moving gear 39 rotates and rolls horizontally along the horizontal rack 38. Then, through the gear bracket 40, the fixed operating cylinder 5 moves synchronously, thereby driving the welding control component 2 and the welding torch 16 to move and weld the positions on the pipe that need to be welded. The electric push rod 17 is activated, causing the inner support electric push rod 37 to rotate. The sliding of the adjusting slider 20 causes the adjusting swing rod 21 to swing. The secondary swing rod 23 is flexibly adjusted by the small spring 22, so that the welding contact block 25 can flexibly contact the outer wall of the pipe. The auxiliary contact wheel 42 can provide auxiliary guidance during the rotation around the pipe. The circumferential motor 13 is started, so the circumferential gear 14 rotates and rolls along the circumferential tooth ring 15. During this process, the horizontal connecting frame 12 slides around the circumferential guide groove 7 through the internal sliding block 9 on the side support plate 10. The touch switch 8 on the movement path of the internal sliding block 9 is triggered. Since several sets of touch switches 8 are set in parallel and are normally closed switches, the internal circuit will be disconnected only when all touch switches 8 are triggered, thereby controlling the welding gun 16 to stop welding, ensuring the quality of welding, and ensuring that the welding gun 16 welds 360 degrees around the pipe. Since the welding control component 2 has three sets, the welding control component 2 only needs to rotate 120 degrees to complete the welding of the entire pipe, thus completing the automated operation.

[0027] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A welding device for water conservancy engineering pipelines, characterized in that: The device includes a pipe positioning assembly (1), a welding control assembly (2), a moving drive mechanism (3), an equipment base (4), a fixed operating cylinder (5), and a surrounding transmission component (6). The moving drive mechanism (3) is located on the equipment base (4), the fixed operating cylinder (5) is located on the moving drive mechanism (3), the surrounding transmission component (6) is located on the fixed operating cylinder (5), the pipe positioning assembly (1) is located on the equipment base (4), and the welding control assembly (2) is located on the surrounding transmission component (6). The pipe positioning assembly (1) is divided into two groups and located on the equipment base (4). One group of pipe positioning assemblies (1) is fixed, and the other group of pipe positioning assemblies (1) is slidable.

2. The hydraulic engineering pipeline welding device according to claim 1, characterized in that: The surrounding transmission component (6) includes a surrounding guide groove (7), a touch switch (8), an internal sliding block (9), a side support plate (10), an arc-shaped connecting plate (11), a horizontal connecting frame (12), a surrounding motor (13), a surrounding gear (14), and a surrounding gear ring (15). The surrounding gear ring (15) is located on the outer wall of the fixed operating cylinder (5). The surrounding gear (14) is meshed and driven on the surrounding gear ring (15). The output end of the surrounding motor (13) is connected to the surrounding gear (14). One of the horizontal connecting frames (12) is rotatably mounted on the ring gear (14), and the other horizontal connecting frame (12) is... The side support plate (10) is fixed to the body of the surrounding motor (13), and is fixed to the horizontal connecting frame (12) at both ends. The side support plate (10) is provided with three sets. The surrounding guide groove (7) is provided at both ends of the fixed operating cylinder (5). The array of touch switches (8) is provided on the inner wall of the surrounding guide groove (7). The internal sliding block (9) is fitted and slidably provided in the surrounding guide groove (7). The internal sliding block (9) can contact the touch switch (8) when sliding. The arc-shaped connecting plate (11) is fixed between adjacent side support plates (10). The internal sliding block (9) is fixed on the side support plate (10).

3. The hydraulic engineering pipeline welding device according to claim 2, characterized in that: The welding control assembly (2) is provided in three sets. The welding control assembly (2) includes a welding torch (16), an electric push rod (17), a welding adjustment support arm (18), an adjustment groove (19), an adjustment slider (20), an adjustment swing rod (21), a small spring (22), a secondary swing rod (23), an auxiliary swing rod (24), and a welding contact block (25). The welding adjustment support arm (18) is fixed between the side support plates (10). The body of the electric push rod (17) is located on the welding adjustment support arm (18). The adjustment groove (19) is located on the welding adjustment support arm (18). The adjustment slider (20) is fitted and slidably located on the adjustment groove (19). The adjustment swing rod (21) is hinged to the adjustment slider (20). The adjusting swing rod (21) is provided with an internal spring rod, the auxiliary swing rod (24) is hinged to the welding adjusting support arm (18), the welding contact block (25) is provided on the auxiliary swing rod (24), the secondary swing rod (23) is hinged to the welding contact block (25), the internal spring rod is slidably provided on the secondary swing rod (23), the small spring (22) is provided between the adjusting swing rod (21) and the secondary swing rod (23), the welding torch (16) is embedded in the welding contact block (25), and the output end of the electric push rod (17) is provided on the adjusting slider (20); the touch switch (8) and the welding torch (16) are electrically connected, and several sets of the touch switches (8) are arranged in parallel, and the touch switch (8) is a normally closed switch.

4. The hydraulic engineering pipeline welding device according to claim 3, characterized in that: The pipeline positioning assembly (1) includes a hydraulic lifting platform (26), a fixing ring (27), a fixing disc (28), a rotating adjusting ring (29), a side adjusting operating groove (30), an adjusting array groove (31), an adjusting column (32), an inner support curved arm (33), and an inner support sliding rail (34). The hydraulic lifting platform (26) is mounted on the equipment base (4). A set of hydraulic lifting platforms (26) on the left side is fixed, and a set of hydraulic lifting platforms (26) on the right side is slidable. The fixing ring (27) is fixed to the hydraulic lifting platform (26), and the fixing disc (28) is fixed to the hydraulic lifting platform (29). 8) Fixed to the hydraulic lifting platform (26), the side adjustment operation groove (30) is provided on the fixed plate (28), the rotating adjustment ring (29) is fitted and rotated on the fixed plate (28), the adjustment array groove (31) is arranged in an array around the rotating adjustment ring (29), the inner support sliding rail (34) is arranged in an array around the fixed plate (28), the inner support curved arm (33) is fitted and slidably provided on the inner support sliding rail (34), the adjustment column (32) is provided on the inner support curved arm (33), and the adjustment column (32) is fitted and slidably provided in the adjustment array groove (31).

5. A welding device for water conservancy engineering pipelines according to claim 4, characterized in that: The rotating adjustment ring (29) is provided with a rotating adjustment arm (35), which can pass through the side adjustment operation groove (30). The fixed ring (27) and the fixed plate (28) are provided with a push rod support (36), and the push rod support (36) is provided with an inner support electric push rod (37). The rotating adjustment arm (35) is hinged to the output end of the inner support electric push rod (37).

6. A welding device for water conservancy engineering pipelines according to claim 5, characterized in that: The mobile drive mechanism (3) includes a horizontal rack (38), a moving gear (39), a gear bracket (40), and a mobile drive motor (41). The horizontal rack (38) is fixed to the equipment base (4). The moving gear (39) is meshed on the horizontal rack (38). The gear bracket (40) is located on the moving gear (39). The moving gear (39) is connected to the gear bracket (40) via a shaft. The gear bracket (40) is slidably fitted on the horizontal rack (38). The body of the mobile drive motor (41) is located on the gear bracket (40). The shaft of the moving gear (39) is connected to the output end of the mobile drive motor (41).

7. A hydraulic engineering pipeline welding device according to claim 6, characterized in that: The welding contact block (25) is provided with an auxiliary bonding wheel (42) for assisting bonding to the outer wall of the water conservancy project pipeline; the welding gun (16) is equipped with a welding line and is used in conjunction with an external welding device. The welding line passes through the welding contact block (25) and the welding adjustment support arm (18).

8. A welding device for water conservancy engineering pipelines according to claim 7, characterized in that: The fixed operating cylinder (5) is fixed to the top of the gear bracket (40) for easy movement.

9. A hydraulic engineering pipeline welding device according to claim 8, characterized in that: The equipment base (4) is provided with an electric push cylinder (43), and the output end of the electric push cylinder (43) is connected to the hydraulic lifting platform (26) of a set of pipeline positioning components (1) on the right side.

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