Pipeline welding angle fixing device for water conservancy project

Abstract

The invention discloses a pipeline welding angle fixing device for water conservancy projects, and relates to the technical field of water conservancy projects, the pipeline welding angle fixing device comprises a base, a welding arm and pipelines, the welding arm is arranged at the top of the base, the pipeline welding angle fixing device further comprises clamping devices, and the two pipelines of the same size are placed on the clamping devices on the left side and the right side respectively; by pulling the sliding rod and the connecting rod rightwards, the L-shaped frame can achieve inner supporting and clamping of the pipeline, displacement or deformation of the pipeline in the welding process can be effectively prevented through inner supporting and clamping of the pipeline, at the moment, the pipeline is fixed, and after the pipeline is fixed, mistaken touch prevention is achieved by rotating the round rod and the pincer-like button to clamp the pipeline; the clamping device can be prevented from displacing or loosening in the working process, the pipeline is driven to rotate through the first servo motor, the first gear, the second gear and the triangular support, the angle of the pipeline can be adjusted through the rotary clamping device according to needs, and a welding worker can conduct welding in the most comfortable working posture.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy projects, and in particular to a pipeline welding angle fixing device for water conservancy projects. Background Art

[0002] In water conservancy projects, pipe welding is a key technology, and the fixing of welding angles is crucial to ensure welding quality. Traditional pipe welding fixtures often have problems such as inconvenient angle adjustment and unstable fixing, which affects welding efficiency and quality. Therefore, the development of a device that can accurately fix the welding angle has become an important demand in the field of water conservancy projects.

[0003] The patent with the patent announcement number CN221833710U relates to the field of water conservancy engineering technology. The patent relates to the field of pipeline welding, and specifically provides a new type of pipeline welding fixing clamp, wherein the top surface of the bottom plate is fixedly connected with a positioning component, and the surface of the positioning component is provided with an adjustment component, the positioning component includes a U-shaped block fixed to the surface of the bottom plate, and the inner surface of the U-shaped block is fixedly connected with a bearing 1, and a screw 1 is fixedly installed inside the bearing 1. The patent is provided with a positioning component on the surface of the bottom plate, and a screw and a nut seat are provided inside the positioning component. By rotating the screw, the screw can drive the nut seat to slide, so that the nut seat drives the rectangular block and the sliding block to slide, so as to facilitate the alignment of the two groups of pipelines, avoid errors caused by manual alignment, and affect the use. The adjustment component is provided on the top of the rectangular block, and an annular groove is provided inside the adjustment component. At the same time, the annular groove cooperates with the use of a threaded column and a limit nut, so as to facilitate the adjustment of the angle of the connection block and improve the actual use effect.

[0004] In the above patent, it is convenient to align the two sets of pipes to avoid errors caused by manual alignment, but the current equipment has the following problems: if there is no limit, the pipes may be displaced during the welding process due to welding stress, gravity or other external forces. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a pipe welding angle fixing device for water conservancy projects, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pipeline welding angle fixing device for water conservancy projects, comprising a base, a welding arm and a pipeline, wherein the welding arm is arranged on the top of the base, and also comprises a clamping device; wherein the clamping device comprises a sliding frame, a tripod, a servo motor 1, a gear 1, a gear 2, a sliding rod, an L-shaped frame, a connecting rod, a fixed frame, a round rod and a clamp button, one side of the sliding frame is slidably mounted on the top of the base, the tripod is rotatably mounted on the inner wall of the sliding frame, the fixed end of the servo motor 1 is fixedly mounted on the inner wall of the sliding frame, the gear 1 is fixedly mounted on the output end of the servo motor 1, the gear 2 is fixedly mounted on the right side of the tripod, the sliding rod is slidably mounted on the inner wall of the sliding frame, and the L-shaped frame is slidably mounted inside the tripod The pipe is arranged on the outer wall of the L-shaped frame, one side of the connecting rod is rotatably mounted on the circumferential surface of the sliding rod, and the other side of the connecting rod is rotatably mounted on the surface of the L-shaped frame, and two pipes of the same size are respectively placed on the clamping devices on the left and right sides, that is, the pipes are placed on the outer wall of the L-shaped frame. At this time, the connecting rod is rotated by pulling the sliding rod to the right, and the rotation of the connecting rod causes the L-shaped frame to move outward, so that the L-shaped frame realizes internal support and clamping of the pipe, and the fixed frame is fixedly mounted on the right side of the sliding frame, and the round rod is rotatably mounted on the inner wall of the fixed frame, and the circumferential surface of the round rod is provided with a bidirectional thread groove, and the clamp button is threadedly mounted on the circumferential surface of the round rod, and the bidirectional thread groove is used to make the clamp button move inward until it contacts and is restricted by the clamping groove provided on the sliding rod, and the sliding rod cannot be pulled at this time; Wherein, a supporting device for supporting the pipeline and a collecting device for cleaning welding slag of the pipeline are arranged below the pipeline.

[0007] According to the above technical solution, the gear one is meshed with the gear two, and a slot is provided on the circumferential surface of the slide rod. The output end of the servo motor one rotates to drive the gear one to rotate, and the rotation of the gear one drives the gear two to rotate.

[0008] According to the above technical solution, the supporting device includes an elastic telescopic rod 1 and a supporting frame, the fixed end of the elastic telescopic rod 1 is fixedly mounted on the surface of the sliding frame, the supporting frame is fixedly mounted on the movable end of the elastic telescopic rod 1, a pulley is provided on the inner wall of the supporting frame, and the long rod is driven to rotate by the output end of the servo motor 2, and the rotation of the long rod causes the sliding frames on both sides to move toward the center, thereby realizing the docking of the pipes on both sides, and supporting the pipes through the supporting frame after the pipes are fixed.

[0009] According to the above technical scheme, the supporting device also includes a servo motor 2, a long rod, an elastic telescopic rod 2, a limit button, a limit block and a driving rod, the fixed end of the servo motor 2 is fixedly installed on the right side of the base, the long rod is fixedly installed on the output end of the servo motor 2, the circumferential surface of the long rod is provided with a bidirectional spiral groove, the other side of the sliding frame is threadedly installed on the circumferential surface of the long rod, the fixed end of the elastic telescopic rod 2 is fixedly installed on the top of the base, the limit button is fixedly installed on the movable end of the elastic telescopic rod 2, the limit block is rotatably installed on the surface of the elastic telescopic rod 2, the top of the limit block is set as an inclined surface, the driving rod is slidably installed on the inner wall of the base, and the side of the limit block close to the driving rod is set as an inclined surface. During the movement of the sliding frame, it will contact the driving rod, causing the driving rod to move to the left. The movement of the driving rod will contact the limit button, causing the limit button to rotate. The limit button rotates to break away from the restriction of the limit block. At this time, the movable end of the elastic telescopic rod 2 is released and extends upward, thereby driving the sanding frame to move.

[0010] According to the above technical solution, the supporting device also includes a sanding frame, a telescopic rod and a No. 1 spring. The sanding frame is fixedly installed on the movable end of the elastic telescopic rod 2, the fixed end of the telescopic rod is fixedly installed on the top of the base, the movable end of the elastic telescopic rod 2 is fixedly installed on the bottom of the sanding frame, and the No. 1 spring is arranged between the sanding frame and the fixed end of the elastic telescopic rod 2. Sandpaper is arranged on the inner wall of the sanding frame. When the sanding frame moves, the movable end of the telescopic rod is driven to extend, and the No. 1 spring is stretched at the same time. In this way, the movement of the sanding frame is buffered.

[0011] According to the above technical solution, the collection device includes a collection box, a docking button, a fixing button and a locking rod, the fixing button is fixedly installed at the bottom of the base, the docking button is slidably installed on the inner wall of the fixing button, the collection box is fixedly installed at the bottom of the docking button, the locking rod is slidably installed on the inner wall of the fixing button, the bottom of the locking rod is set as an inclined surface, a No. 2 spring is arranged between the locking rod and the fixing button, and a docking groove is opened on the side of the docking button close to the locking rod. When installing the collection box, the docking button is aligned with the fixing button and then inserted. When the docking groove and the locking rod are on the same horizontal line, the No. 2 spring is released and drives the locking rod to be inserted into the docking groove. At this time, the installation of the collection box is completed.

[0012] According to the above technical solution, the collecting device also includes a driving block and a U-shaped frame, the driving block is fixedly installed on the front side of the locking rod, the bottom of the driving block is set to an inclined surface, the U-shaped frame is slidably installed on the inner wall of the collecting box, and a No. 3 spring is arranged between the U-shaped frame and the collecting box. The U-shaped frame contacts the driving block, and the driving block moves to the right by moving the U-shaped frame upward and contacting the inclined surface of the driving block. The movement of the driving block drives the locking rod to move, so that the locking rod is disengaged from the docking groove, and the collecting box can be taken out at this time.

[0013] According to the above technical solution, the collection device also includes a dust suction port and a telescopic pipe. The dust suction port is fixedly installed on the inner wall of the sanding frame. A telescopic pipe is arranged between the dust suction port and the collection box. An air suction pump is arranged inside the collection box. Iron filings are generated after sanding with sandpaper. At this time, the iron filings are sucked into the telescopic pipe from the dust suction port through the air suction pump and then enter the collection box for storage.

[0014] The present invention provides a pipe welding angle fixing device for water conservancy projects. It has the following beneficial effects: (1) The invention, through the setting of the clamping device, places two pipes of the same size on the clamping devices on the left and right sides respectively, and by pulling the sliding rod and the connecting rod to the right, the L-shaped frame can realize internal support and clamping of the pipe. The internal support and clamping of the pipe can effectively prevent the displacement or deformation of the pipe during the welding process, thereby improving the accuracy and quality of welding. At this time, the pipe is fixed. After the pipe is fixed, the pipe is clamped by rotating the round rod and the clamp button to prevent accidental touch, which can prevent the clamping device from being displaced or loosened during the working process. The pipe is driven to rotate by the servo motor 1, gear 1, gear 2, and tripod. The rotating clamping device can adjust the angle of the pipe as needed, so that the welder can weld in the most comfortable working posture.

[0015] (2) The invention, through the setting of the support device, uses the servo motor 2 and the long rod to move the sliding frames on both sides toward the center, thereby realizing the docking of the pipes on both sides. After the pipes are fixed, they are supported by the support frame to improve the welding efficiency. The movable end of the elastic telescopic rod 2 is released by the driving rod and the limit button, and extends upward, that is, drives the sanding frame to move. When the sanding frame moves, it drives the movable end of the telescopic rod to extend and stretches the No. 1 spring at the same time. In this way, the movement of the sanding frame is buffered to prevent it from quickly resetting after contacting the limit and colliding with the pipe, causing the pipe to bump. The pipes on both sides are welded by the welding arm. When the pipe rotates, it contacts the sandpaper to grind the weld. The raised part or rough surface of the weld may form a stress concentration point, which becomes the source of fatigue damage. The irregular parts are removed by grinding to make the weld surface smooth, which can reduce the risk of fatigue damage.

[0016] (3) The invention, through the setting of the collection device, generates iron chips after sandpaper grinding. At this time, the iron chips are sucked into the telescopic pipe from the suction port through the suction pump, and then enter the collection box for storage. If the grinding chips and dust are not cleaned up in time, it is easy to cause environmental pollution and affect the operator's vision and work efficiency. If the installation and disassembly process of the iron chip collection box is cumbersome, the preparation work before each welding and the cleaning work after welding will increase, thereby affecting the overall work efficiency. The quick installation and disassembly function can enable these tasks to be completed quickly, thereby improving the overall efficiency of the welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the clamping device of the present invention; Figure 3 This is a schematic diagram of the position structure of the slide bar and the round bar of the present invention; Figure 4 It is a schematic diagram of the position structure of the driving rod and the sliding frame of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement of part A; Figure 6 This is a schematic diagram of the position structure of the dust suction port and the sanding frame of the present invention; Figure 7 It is a schematic diagram of the position structure of the docking button and the fixing button of the present invention.

[0018] In the figure: 1. base; 2. welding arm; 3. pipeline; 4. sliding frame; 5. tripod; 6. servo motor 1; 7. gear 1; 8. gear 2; 9. sliding rod; 10. L-shaped frame; 11. connecting rod; 12. fixed frame; 13. round rod; 20. elastic telescopic rod 1; 21. supporting frame; 22. servo motor 2; 23. long rod; 24. elastic telescopic rod 2; 25. limit button; 26. limit block; 27. driving rod; 28. frosting frame; 29. ​​telescopic rod; 210, spring; 30. collection box; 31. docking button; 32. fixing button; 33. positioning rod; 34. driving block; 35. U-shaped frame; 36. dust suction port; 37. telescopic pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7One embodiment of the present invention is: a pipe welding angle fixing device for water conservancy engineering, comprising a base 1, a welding arm 2 and a pipe 3, wherein the welding arm 2 is arranged on the top of the base 1, and also comprises a clamping device; wherein the clamping device comprises a sliding frame 4, a tripod 5, a servo motor 16, a gear 17, a gear 28, a sliding rod 9, an L-shaped frame 10, a connecting rod 11, a fixed frame 12, a round rod 13 and a clamp button 14, one side of the sliding frame 4 is slidably mounted on the top of the base 1, the tripod 5 is rotatably mounted on the inner wall of the sliding frame 4, the fixed end of the servo motor 16 is fixedly mounted on the inner wall of the sliding frame 4, the gear 17 is fixedly mounted on the output end of the servo motor 16, the gear 28 is fixedly mounted on the right side of the tripod 5, and the rotating clamping device can adjust the angle of the pipe 3 as needed. , so that the welding worker can perform welding in the most comfortable working posture, the sliding rod 9 is slidably installed on the inner wall of the sliding frame 4, the L-shaped frame 10 is slidably installed on the inner wall of the tripod 5, the pipe 3 is arranged on the outer wall of the L-shaped frame 10, and the inner support clamping the pipe 3 can effectively prevent the pipe 3 from being displaced or deformed during the welding process, thereby improving the accuracy and quality of welding, one side of the connecting rod 11 is rotatably installed on the circumferential surface of the sliding rod 9, and the other side of the connecting rod 11 is rotatably installed on the surface of the L-shaped frame 10, the fixed frame 12 is fixedly installed on the right side of the sliding frame 4, the round rod 13 is rotatably installed on the inner wall of the fixed frame 12, the circumferential surface of the round rod 13 is provided with a bidirectional thread groove, and the clamp button 14 is threadedly installed on the circumferential surface of the round rod 13, which can prevent the clamping device from being displaced or loosened during the working process; Wherein, a supporting device for supporting the pipeline 3 and a collecting device for cleaning welding slag of the pipeline 3 are arranged below the pipeline 3.

[0021] Gear 1 7 is meshed with gear 2 8 , and a slot is provided on the circumferential surface of the slide bar 9 , and the clamp button 14 is moved inwardly through the bidirectional thread groove until it contacts and is restricted by the slot provided in the slide bar 9 .

[0022] When the present embodiment is working, two pipes 3 of the same size are placed on the clamping devices on the left and right sides respectively, that is, the pipes 3 are placed on the outer wall of the L-shaped frame 10. At this time, the connecting rod 11 is rotated by pulling the slide bar 9 to the right, and the connecting rod 11 rotates to move the L-shaped frame 10 outward, so that the L-shaped frame 10 can achieve internal support and clamping of the pipe 3. The internal support and clamping of the pipe 3 can effectively prevent the displacement or deformation of the pipe 3 during the welding process, thereby improving the accuracy and quality of welding. At this time, the pipe 3 is fixed. After the fixing of the pipe 3 is completed, the bidirectional thread groove is driven to rotate by rotating the round rod 13, and the bidirectional thread groove is used to make the pipe 3 The clamp button 14 moves inward until it contacts and restricts the slot provided in the slide bar 9. At this time, the slide bar 9 cannot be pulled, that is, the clamping of the pipe 3 is prevented from accidental touch, and the clamping device can be prevented from displacement or loosening during operation. The output end of the servo motor 16 rotates to drive the gear 17 to rotate, the gear 17 rotates to drive the gear 28 to rotate, the gear 28 rotates to drive the tripod 5 to rotate, the tripod 5 rotates to drive the L-shaped frame 10 to rotate, that is, the pipe 3 is driven to rotate, and the rotating clamping device can adjust the angle of the pipe 3 as needed, so that the welder can weld in the most comfortable working posture.

[0023] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a supporting device and a collecting device are further provided above the base 1, the supporting device comprises an elastic telescopic rod 20 and a supporting frame 21, the fixed end of the elastic telescopic rod 20 is fixedly mounted on the surface of the sliding frame 4, the supporting frame 21 is fixedly mounted on the movable end of the elastic telescopic rod 20, a pulley is provided on the inner wall of the supporting frame 21, and support is provided through the supporting frame 21 to improve the welding efficiency.

[0024] The supporting device also includes a servo motor 22, a long rod 23, an elastic telescopic rod 24, a limit button 25, a limit block 26 and a driving rod 27. The fixed end of the servo motor 22 is fixedly mounted on the right side of the base 1, the long rod 23 is fixedly mounted on the output end of the servo motor 22, a bidirectional spiral groove is provided on the circumferential surface of the long rod 23, the other side of the sliding frame 4 is threadedly mounted on the circumferential surface of the long rod 23, the fixed end of the elastic telescopic rod 24 is fixedly mounted on the top of the base 1, the limit button 25 is fixedly mounted on the movable end of the elastic telescopic rod 24, the limit block 26 is rotatably mounted on the surface of the elastic telescopic rod 24, the top of the limit block 26 is set as an inclined surface, the driving rod 27 is slidably mounted on the inner wall of the base 1, the side of the limit block 26 close to the driving rod 27 is set as an inclined surface, the movable end of the elastic telescopic rod 24 is in a compressed state, and the sliding frame 4 will contact the driving rod 27 during the movement, so that the driving rod 27 moves to the left, and the driving rod 27 moves and contacts with the limit button 25.

[0025] The supporting device also includes a sanding frame 28, a telescopic rod 29 and a No. 1 spring 210. The sanding frame 28 is fixedly mounted on the movable end of the elastic telescopic rod 24. The fixed end of the telescopic rod 29 is fixedly mounted on the top of the base 1. The movable end of the elastic telescopic rod 24 is fixedly mounted on the bottom of the sanding frame 28. The No. 1 spring 210 is arranged between the sanding frame 28 and the fixed end of the elastic telescopic rod 24. The No. 1 spring 210 is arranged for buffering. The inner wall of the sanding frame 28 is provided with sandpaper. In this way, the movement of the sanding frame 28 is buffered to prevent it from quickly resetting after contacting the limit and colliding with the pipe 3, causing a bump on the pipe 3.

[0026] The collecting device comprises a collecting box 30, a docking button 31, a fixing button 32 and a locking rod 33. The fixing button 32 is fixedly mounted on the bottom of the base 1, the docking button 31 is slidably mounted on the inner wall of the fixing button 32, the collecting box 30 is fixedly mounted on the bottom of the docking button 31, the locking rod 33 is slidably mounted on the inner wall of the fixing button 32, the bottom of the locking rod 33 is set as an inclined surface, a No. 2 spring is arranged between the locking rod 33 and the fixing button 32, and the locking rod 33 is reset by the arranged No. 2 spring. A docking groove is provided on the side of the docking button 31 close to the locking rod 33. Iron filings will be generated after sandpaper polishing. At this time, the iron filings are sucked into the telescopic pipe 37 from the dust suction port 36 through the suction pump, and then enter the collecting box 30 for storage.

[0027] The collecting device also includes a driving block 34 and a U-shaped frame 35. The driving block 34 is fixedly mounted on the front side of the locking rod 33. The bottom of the driving block 34 is set as an inclined surface. The U-shaped frame 35 is slidably mounted on the inner wall of the collecting box 30. A No. 3 spring is arranged between the U-shaped frame 35 and the collecting box 30. The No. 3 spring drives the U-shaped frame 35 to reset, and the U-shaped frame 35 contacts the driving block 34. If the installation and disassembly process of the iron chip collection box 30 is cumbersome, the preparation work before each welding and the cleaning work after welding will increase, thereby affecting the overall work efficiency. The quick installation and disassembly function can complete these tasks quickly and improve the overall efficiency of the welding work.

[0028] The collecting device also includes a dust suction port 36 and a telescopic pipe 37. The dust suction port 36 is fixedly installed on the inner wall of the sanding frame 28. A telescopic pipe 37 is arranged between the dust suction port 36 and the collecting box 30. An air suction pump is arranged inside the collecting box 30. If the grinding debris and dust are not cleaned in time, it is easy to cause environmental pollution and affect the operator's vision and work efficiency.

[0029] When the present embodiment is working, the output end of the servo motor 22 rotates to drive the long rod 23 to rotate. The rotation of the long rod 23 causes the sliding frames 4 on both sides to move toward the center, thereby achieving the docking of the pipes 3 on both sides. After the pipes 3 are fixed, they are supported by the support frame 21 to improve the welding efficiency. The movable end of the elastic telescopic rod 24 is in a compressed state. During the movement of the sliding frame 4, it will contact the driving rod 27, causing the driving rod 27 to move to the left. The movement of the driving rod 27 will contact the limit button 25, causing the limit button 25 to rotate. The limit button 25 rotates to break away from the restriction of the limit block 26. At this time, the movable end of the elastic telescopic rod 24 The sanding frame 28 is released and extends upward, which drives the sanding frame 28 to move. When the sanding frame 28 moves, the movable end of the telescopic rod 29 is extended, and the spring 210 is stretched at the same time. In this way, the sanding frame 28 is buffered to prevent it from quickly resetting after contacting the limit position and colliding with the pipe 3, causing the pipe 3 to bump. The pipes 3 on both sides are welded by the welding arm 2. When the pipe 3 rotates, it contacts the sandpaper to grind the weld. The convex part or rough surface of the weld may form a stress concentration point, which becomes the source of fatigue damage. The irregular part is removed by grinding to make the weld surface smooth, which can reduce the risk of fatigue damage. After the pipes 3 are butt-jointed, welding is performed through the welding arm 2. Sandpaper polishing generates iron filings, which are then sucked into the telescopic pipe 37 from the dust suction port 36 by an air pump and then stored in the collection box 30. If the polishing chips and dust are not cleaned up in time, it is easy to cause environmental pollution and affect the operator's vision and work efficiency. When the collection box 30 needs to be processed, the U-shaped frame 35 is moved upward to contact the inclined surface of the driving block 34, so that the driving block 34 moves to the right. The movement of the driving block 34 drives the positioning rod 33 to move, so that the positioning rod 33 is disengaged from the docking groove. Only then can the collection box 30 be taken out, and the collection box 30 is processed. During installation, the docking button 31 is aligned with the fixing button 32 and then inserted. At this time, the outer wall of the docking button 31 will contact the inclined surface of the locking rod 33, causing the locking rod 33 to move to the right and compress the No. 2 spring. When the docking groove and the locking rod 33 are on the same horizontal line, the No. 2 spring is released and drives the locking rod 33 to be inserted into the docking groove. At this time, the installation of the collection box 30 is completed. If the installation and disassembly process of the iron chip collection box 30 is cumbersome, the preparation work before each welding and the cleaning work after welding will increase, thereby affecting the overall work efficiency. The quick installation and disassembly function can complete these tasks quickly, thereby improving the overall efficiency of the welding work.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe welding angle fixing device for water conservancy engineering, comprising a base (1), a welding arm (2) and a pipe (3), characterized in that: The welding arm (2) is arranged on the top of the base (1), and also includes a clamping device; The clamping device comprises a sliding frame (4), a tripod (5), a servo motor 1 (6), a gear 1 (7), a gear 2 (8), a sliding rod (9), an L-shaped frame (10), a connecting rod (11), a fixed frame (12), a round rod (13) and a clamp button (14), one side of the sliding frame (4) is slidably mounted on the top of the base (1), the tripod (5) is rotatably mounted on the inner wall of the sliding frame (4), the fixed end of the servo motor 1 (6) is fixedly mounted on the inner wall of the sliding frame (4), the gear 1 (7) is fixedly mounted on the output end of the servo motor 1 (6), and the gear 2 (8) is fixedly mounted on the right side of the tripod (5). The sliding rod (9) is slidably mounted on the inner wall of the sliding frame (4), the L-shaped frame (10) is slidably mounted on the inner wall of the tripod (5), the pipeline (3) is arranged on the outer wall of the L-shaped frame (10), one side of the connecting rod (11) is rotatably mounted on the circumferential surface of the sliding rod (9), and the other side of the connecting rod (11) is rotatably mounted on the surface of the L-shaped frame (10), the fixed frame (12) is fixedly mounted on the right side of the sliding frame (4), the round rod (13) is rotatably mounted on the inner wall of the fixed frame (12), the circumferential surface of the round rod (13) is provided with a bidirectional thread groove, and the clamp button (14) is threadedly mounted on the circumferential surface of the round rod (13); Wherein, a supporting device for supporting the pipeline (3) and a collecting device for cleaning welding slag of the pipeline (3) are arranged below the pipeline (3).

2. The device for fixing the welding angle of a pipeline for a water conservancy project according to claim 1, characterized in that: The gear one (7) is meshed with the gear two (8), and a slot is provided on the circumferential surface of the slide rod (9).

3. A pipe welding angle fixing device for water conservancy engineering according to claim 2, characterized in that: The support device comprises an elastic telescopic rod (20) and a support frame (21), wherein the fixed end of the elastic telescopic rod (20) is fixedly mounted on the surface of the sliding frame (4), and the support frame (21) is fixedly mounted on the movable end of the elastic telescopic rod (20), and a pulley is provided on the inner wall of the support frame (21).

4. The device for fixing the pipe welding angle for water conservancy projects according to claim 3 is characterized by: The supporting device further comprises a servo motor 2 (22), a long rod (23), an elastic telescopic rod 2 (24), a limit button (25), a limit block (26) and a driving rod (27); the fixed end of the servo motor 2 (22) is fixedly mounted on the right side of the base (1); the long rod (23) is fixedly mounted on the output end of the servo motor 2 (22); a bidirectional spiral groove is provided on the circumferential surface of the long rod (23); the other side of the sliding frame (4) is threadedly mounted on the circumferential surface of the long rod (23); the fixed end of the elastic telescopic rod 2 (24) is fixedly mounted on the top of the base (1); the limit button (25) is fixedly mounted on the movable end of the elastic telescopic rod 2 (24); the limit block (26) is rotatably mounted on the surface of the elastic telescopic rod 2 (24); the top of the limit block (26) is arranged as an inclined surface; the driving rod (27) is slidably mounted on the inner wall of the base (1); and the side of the limit block (26) close to the driving rod (27) is arranged as an inclined surface.

5. The device for fixing the welding angle of a pipeline for a water conservancy project according to claim 4, characterized in that: The supporting device further comprises a sanding frame (28), a telescopic rod (29) and a first spring (210); the sanding frame (28) is fixedly mounted on the movable end of the second elastic telescopic rod (24); the fixed end of the telescopic rod (29) is fixedly mounted on the top of the base (1); the movable end of the second elastic telescopic rod (24) is fixedly mounted on the bottom of the sanding frame (28); the first spring (210) is arranged between the sanding frame (28) and the fixed end of the second elastic telescopic rod (24); and the inner wall of the sanding frame (28) is provided with sandpaper.

6. A pipe welding angle fixing device for water conservancy engineering according to claim 5, characterized in that: The collecting device comprises a collecting box (30), a docking button (31), a fixing button (32) and a locking rod (33); the fixing button (32) is fixedly mounted on the bottom of the base (1); the docking button (31) is slidably mounted on the inner wall of the fixing button (32); the collecting box (30) is fixedly mounted on the bottom of the docking button (31); the locking rod (33) is slidably mounted on the inner wall of the fixing button (32); the bottom of the locking rod (33) is arranged as an inclined surface; a second spring is arranged between the locking rod (33) and the fixing button (32); and a docking groove is provided on a side of the docking button (31) close to the locking rod (33).

7. A pipe welding angle fixing device for water conservancy engineering according to claim 6, characterized in that: The collecting device further comprises a driving block (34) and a U-shaped frame (35); the driving block (34) is fixedly mounted on the front side of the locking rod (33); the bottom of the driving block (34) is arranged as an inclined surface; the U-shaped frame (35) is slidably mounted on the inner wall of the collecting box (30); a No. 3 spring is arranged between the U-shaped frame (35) and the collecting box (30); and the U-shaped frame (35) is in contact with the driving block (34).

8. The device for fixing the welding angle of a pipeline for a water conservancy project according to claim 7, characterized in that: The collecting device further comprises a dust suction port (36) and a telescopic pipe (37); the dust suction port (36) is fixedly mounted on the inner wall of the sanding frame (28); a telescopic pipe (37) is provided between the dust suction port (36) and the collecting box (30); and an air suction pump is provided inside the collecting box (30).

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