An integrated device for cutting and welding pipelines in water conservancy projects

Abstract

The present invention relates to the technical field of pipeline processing, and in particular to an integrated device for cutting and welding pipelines in water conservancy projects, comprising a mounting base, two clamping seats are arranged on the top of the mounting base, circular through grooves are opened on the clamping seats, clamping and fixing mechanisms are connected inside the circular through grooves, a mechanism for moving toward each other is connected between the two clamping seats, two fixing frames are fixedly connected to the top of the mounting base, and a cutting machine is arranged inside each of the fixing frames; the present invention uses the effect of an elastic yielding mechanism to keep the distance between a welding gun and a pipeline always synchronized, and when the pipeline is beveled and the cutting surface is elliptical, the welding gun can still maintain the same moving spacing under the elliptical moving trajectory, thereby improving the welding effect of the pipeline and reducing the welding difficulty caused by changes in the cutting angle of the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline processing, and in particular to an integrated device for cutting and welding pipelines in water conservancy projects. Background Art

[0002] The main purpose of water conservancy projects is to prevent and control water disasters and develop and utilize water resources. Water conservancy projects include water-related projects in flood control, waterlogging removal, irrigation, hydropower generation, water supply, hydropower generation, shipping, water resource protection, soil and water conservation, aquatic products, tourism and improvement of ecological environment. During the construction of water conservancy projects, water needs to be diverted and irrigated through pipelines.

[0003] The patent document with publication number CN112171273A discloses a multi-angle cutting and welding integrated device for pipes for water conservancy projects. The cutting and welding integrated device includes an equipment body, a storage bin and an infrared emitter. A driving motor is fixed inside the equipment body, and the output shaft of the driving motor is connected to a reducer. A gripping handle is fixed to the upper end surface of the equipment body, and a connecting shaft is installed on the lower end surface of the equipment body. The middle axis of the connecting shaft is connected to a bottom rod. The storage bin is installed on the left side of the connecting shaft, and a support frame is provided on the left side of the equipment body.

[0004] In the prior art, when cutting a pipe, the cutting angle is adjusted by rotating the cutting blade. However, when welding two pipes, it is difficult to smoothly butt the cut surfaces of the two pipes, and as the cutting angle of the pipes changes, the welding trajectory at the butt joint of the pipes needs to be adjusted synchronously, thereby increasing the difficulty of welding. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an integrated device for cutting and welding pipelines in water conservancy projects.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a device for cutting and welding pipelines in a water conservancy project, comprising a mounting base, two clamping seats are arranged on the top of the mounting base, and circular through grooves are opened on the clamping seats, and the inside of the circular through grooves is connected with a clamping and fixing mechanism, and a mechanism for moving toward each other is connected between the two clamping seats, and two fixing frames are fixedly connected to the top of the mounting base, and a cutting machine is arranged inside each of the fixing frames, and the cutting machine is connected with a displacement mechanism and an angle adjustment mechanism;

[0007] An annular frame is arranged between the two fixing frames, a U-shaped shell is fixedly connected to the top of the annular frame, the annular frame and the circular through groove are coaxially arranged, a matching adjustment mechanism is connected to the annular frame, a welding gun is arranged inside the annular frame, a driving rotation mechanism is connected between the welding gun and the annular frame, and an elastic yielding mechanism is connected to the welding gun.

[0008] Preferably, the displacement mechanism includes two first rotating bars, which are respectively arranged on the top surfaces inside the two fixed frames, a first rotating shaft is fixedly connected to the center of the top of the first rotating bar, the first rotating shaft is rotatably connected to the corresponding fixed frame, the bottom of the first rotating bar is fixedly connected to a sliding frame, a slider is slidably connected to the inside of the sliding frame, a connecting screw is rotatably connected to the inside of the sliding frame, the slider is threadedly connected to the connecting screw, a first motor is fixedly installed at one end of the sliding frame, the output shaft of the first motor is fixedly connected to one end of the connecting screw, the bottom of the slider is fixedly connected to a connecting frame, and the connecting frame is fixedly connected to the corresponding cutting machine.

[0009] Preferably, the angle adjustment mechanism includes a swing cylinder and two connecting rods, the swing cylinder is fixedly mounted on the top of one of the fixed frames, the piston shaft of the swing cylinder is fixedly connected to the corresponding first rotating shaft, the two connecting rods are both arranged at the bottom of the two first rotating bars, and the two ends of the connecting rod are respectively rotatably connected to the adjacent ends of the two first rotating bars.

[0010] Preferably, the mating adjustment mechanism includes a connecting plate, which is fixedly connected between the two fixed frames, a second rotating bar is provided at the bottom of the connecting plate, a second rotating shaft is fixedly connected at the center of the top of the second rotating bar, the second rotating shaft is rotatably connected to the connecting plate, both ends of the second rotating bar are respectively rotatably connected to the tops of the two connecting rods, a fixed block is fixedly connected at the center of the bottom of the second rotating bar, and the fixed block is fixedly connected to the top of the U-shaped shell.

[0011] Preferably, the driving rotation mechanism includes a rotating ring and a fixed shell, the rotating ring is rotatably connected to the inside of the annular frame, the outer side of the rotating ring is fixedly connected to an outer gear ring, a movable groove is opened on the top of the annular frame, a second motor is fixedly installed on one side of the U-shaped shell, the output shaft of the second motor passes through the U-shaped shell and extends to the inside of the U-shaped shell and is fixedly connected to a first gear, the bottom of the first gear extends into the movable groove and meshes with the outer gear ring, the fixed shell is fixedly connected to the inner side of the rotating ring, a circular disk is arranged below the fixed shell, two limit pins are fixedly connected to the top of the circular disk, the limit pins are slidably inserted on the fixed shell, a spring is sleeved on the limit pin, the spring is fixedly connected between the fixed shell and the circular disk, and the welding gun is fixedly installed at the bottom of the circular disk.

[0012] Preferably, the elastic yielding mechanism includes a connecting ring, which is rotatably connected to the side of the circular disk, and the bottom of the connecting ring is fixedly connected to an inner gear ring, and the top of the circular disk is fixedly installed with a third motor, and the output shaft of the third motor passes through the circular disk and extends to the bottom of the circular disk and is fixedly connected to a second gear, and the second gear is meshed with the inner gear ring, and the side of the connecting ring is fixedly connected with two mounting strips along the circumferential direction, and the bottom of each mounting strip is fixedly connected with a contact pin, and a spherical groove is provided at the bottom end of each contact pin, and a ball is rollingly connected inside the spherical groove, and a laser transmitter is fixedly installed on the top of one of the mounting strips, and a U-shaped strip is fixedly connected to one of the fixing frames, and a laser receiver is fixedly installed on the bottom of the U-shaped strip, and the laser receiver and the laser transmitter are arranged relatively to each other.

[0013] Preferably, the two contact pins are fixedly connected to one side away from each other with an inclined guide strip, and the bottom ends of the contact pins are provided with a guiding slope.

[0014] Preferably, an L-shaped plate is fixedly connected to one side of the connecting frame, a fourth motor is fixedly installed on one side of the L-shaped plate, and an output shaft of the fourth motor passes through the L-shaped plate and extends to the other side of the L-shaped plate and is fixedly connected to a grinding wheel.

[0015] Preferably, the clamping and fixing mechanism includes a plurality of strip grooves, and the plurality of strip grooves are circumferentially arranged inside the circular through groove, and a clamping strip is arranged inside each of the strip grooves, and a plurality of circumferentially arranged yielding grooves are arranged on one side of the clamping seat, and the yielding grooves are all connected with the corresponding strip grooves, and a circular pin is fixedly connected to one side of the clamping strip, and a limiting ring is rotatably connected to one side of the clamping seat, and a plurality of guide grooves are circumferentially arranged on the limiting ring, and one end of the circular pin extends along the corresponding yielding groove to the inside of the guide groove, respectively, and a fixing rod is fixedly connected to the bottom of the limiting ring, and a light rod is fixedly connected to one side of the fixing rod, and a hydraulic cylinder is fixedly installed on the clamping seat, and a limiting strip is fixedly connected to the piston shaft of the hydraulic cylinder, and the limiting strip is connected to the limiting groove, and the light rod is located in the limiting groove.

[0016] Preferably, the mechanism for moving toward each other includes a sliding rod and a bidirectional screw, the sliding rod is fixedly connected to the mounting base, the bidirectional screw is rotatably connected to the mounting base, the two clamping seats are both slidably connected to the sliding rod, the two clamping seats are both threadedly connected to the bidirectional screw, a fifth motor is fixedly mounted on the mounting base, and the output shaft of the fifth motor is fixedly connected to one end of the bidirectional screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the cutting angle of the cutting machine is adjusted by the angle adjustment mechanism, the annular frame is synchronously adjusted in angle under the action of the adjustment mechanism, so that when the welding gun rotates along the trajectory of the annular frame by driving the rotating mechanism, the moving trajectory of the welding gun is the same as the cutting surface trajectory of the pipeline, so that the butt joints of the two pipelines are completely welded, and when the welding gun rotates around the pipeline surface for welding, the distance between the welding gun and the pipeline is always kept synchronized through the action of the elastic giving way mechanism. When the pipeline is beveled and the cutting surface is elliptical, the welding gun can still maintain the same moving spacing under the elliptical moving trajectory, thereby improving the welding effect of the pipeline and reducing the welding difficulty caused by the change of the pipeline cutting angle.

[0019] 2. When the corresponding first rotating bar rotates, the other first rotating bar rotates synchronously through the rotation connection between the two ends of the connecting rod and the adjacent ends of the two first rotating bars, so that the two first rotating bars always remain in a parallel state, so that the cutting angles of the two cutting machines always remain parallel, ensuring that when the cutting angles of the two pipes change, the cutting surfaces of the pipes can always fit together.

[0020] 3. The two ends of the second rotating bar are respectively connected to the two connecting rods for rotation, so that the second rotating shaft at the top of the second rotating bar rotates synchronously along the rotating connection of the connecting plate, so that the second rotating bar drives the fixed block to rotate, and through the fixed connection between the fixed block and the U-shaped shell, the U-shaped shell and the annular frame are synchronously adjusted in angle, and the cutting angles of the annular frame and the cutting machine are always kept parallel.

[0021] 4. When the welding gun moves unidirectionally along the butt joint of two pipes for welding, the welding gun always maintains a fixed distance from the pipe surface through the elastic stretching effect of the spring, and the welding distance will not change when moving along the elliptical section, thereby improving the pipe welding effect. In the process of moving the welding gun, the ball at the bottom of the contact pin contacts the pipe surface instead of the welding gun, and rolls along the inside of the spherical groove during the contact process, thereby reducing friction resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement at point A;

[0024] Figure 3 For the present invention Figure 1 A schematic diagram of the structure at B in FIG.

[0025] Figure 4 It is a schematic diagram of the matching structure of the fixing frame, the cutting machine and the grinding wheel of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the structure at position C in FIG.

[0027] Figure 6 It is a schematic diagram of the matching structure of the annular frame, welding gun and U-shaped bar of the present invention;

[0028] Figure 7 For the present invention Figure 6 A schematic diagram of the structure at D in FIG.

[0029] Figure 8 For the present invention Figure 6 A schematic diagram of the structure at position E in FIG.

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the clamping seat of the present invention;

[0031] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at F in FIG.

[0032] In the figure: 1, mounting base; 2, clamping seat; 3, circular through groove; 4, fixing frame; 5, cutting machine; 6, ring frame; 7, U-shaped shell; 8, welding gun; 9, first rotating bar; 10, first rotating shaft; 11, sliding frame; 12, slider; 13, connecting screw; 14, first motor; 15, connecting frame; 16, swing cylinder; 17, connecting rod; 18, connecting plate; 19, second rotating bar; 20, second rotating shaft; 21, fixing block; 22, rotating ring; 23, fixing shell; 24, outer gear ring; 25, movable groove; 26, second motor; 27, first gear; 28, circular disk; 29, limit pin; 30, Spring; 31. Connecting ring; 32. Internal gear ring; 33. Third motor; 34. Second gear; 35. Mounting strip; 36. Contact pin; 37. Spherical groove; 38. Ball; 39. Laser transmitter; 40. U-shaped strip; 41. Laser receiver; 42. Inclined guide strip; 43. L-shaped plate; 44. Fourth motor; 45. Grinding wheel; 46. Strip groove; 47. Clamping strip; 48. Clearance groove; 49. Round pin; 50. Limiting ring; 51. Guide groove; 52. Fixed rod; 53. Light rod; 54. Hydraulic cylinder; 55. Limiting strip; 56. Limiting groove; 57. Sliding rod; 58. Bidirectional lead screw; 59. Fifth motor. DETAILED DESCRIPTION

[0033] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0034] like Figures 1 to 10 The device for cutting and welding a water conservancy project pipeline shown in the figure comprises a mounting base 1, two clamping seats 2 are arranged on the top of the mounting base 1, and circular through grooves 3 are opened on the clamping seats 2, and the inside of the circular through grooves 3 is connected with a clamping and fixing mechanism, and a mechanism for moving toward each other is connected between the two clamping seats 2, and two fixing frames 4 are fixedly connected to the top of the mounting base 1, and a cutting machine 5 is arranged inside each fixing frame 4, and the cutting machine 5 is connected with a displacement mechanism and an angle adjustment mechanism;

[0035] An annular frame 6 is arranged between the two fixing frames 4, a U-shaped shell 7 is fixedly connected to the top of the annular frame 6, the annular frame 6 and the circular groove 3 are coaxially arranged, a matching adjustment mechanism is connected to the annular frame 6, a welding gun 8 is arranged inside the annular frame 6, a driving rotation mechanism is connected between the welding gun 8 and the annular frame 6, and an elastic yielding mechanism is connected to the welding gun 8; when working, the prior art uses the rotation of the cutting blade to adjust the cutting angle when cutting the pipeline, but when welding two pipelines, the cutting surfaces of the two pipelines are difficult to be flatly butted, and as the cutting angle of the pipeline changes, the welding trajectory at the butt joint of the pipeline needs to be adjusted synchronously, thereby increasing the difficulty of welding; the technical scheme can solve the above problems, and the specific working method is as follows: one end of the two pipelines used for welding and fixing is respectively placed in the circular groove 3 along the side away from each other of the two clamping seats 2, and one end of the pipeline is clamped and fixed by the action of the clamping and fixing mechanism, and then the cutting angle of the cutting machine 5 is adjusted by the action of the angle adjustment mechanism, and then the displacement mechanism is used to adjust the cutting angle of the cutting machine 5. The two cutting machines 5 are displaced along the cutting angle and move and cut one end of the pipe, so that the cutting surfaces of the adjacent ends of the two pipes are parallel to each other, and then the two clamping seats 2 drive the corresponding pipes to approach each other through the action of the opposite moving mechanism, so that the cutting surfaces of the two pipes are located at the axis of the annular frame 6 and butted, and when the cutting angle of the cutting machine 5 is adjusted by the angle adjustment mechanism, the annular frame 6 is synchronously adjusted in angle under the action of the adjustment mechanism, so that when the welding gun 8 is rotated along the trajectory of the annular frame 6 by the action of the driving rotation mechanism, the moving trajectory of the welding gun 8 is the same as the cutting surface trajectory of the pipe, so that the butt joint of the two pipes is completely welded, and when the welding gun 8 rotates around the surface of the pipe for welding, the distance between the welding gun 8 and the pipe is always kept synchronized through the action of the elastic giving way mechanism, and when the pipe is beveled and the cutting surface is elliptical, the welding gun 8 can still maintain the same moving spacing under the elliptical moving trajectory, thereby improving the welding effect of the pipe and reducing the welding difficulty caused by the change of the pipe cutting angle.

[0036] As a further embodiment of the present invention, the displacement mechanism comprises two first rotating bars 9 (such as Figure 5As shown in the figure, two first rotating bars 9 are respectively arranged on the top surfaces inside the two fixed frames 4, a first rotating shaft 10 is fixedly connected at the center of the top of the first rotating bar 9, and the first rotating shaft 10 is rotatably connected to the corresponding fixed frame 4, and a sliding frame 11 is fixedly connected to the bottom of the first rotating bar 9, a slider 12 is slidably connected inside the sliding frame 11, and a connecting screw 13 is rotatably connected inside the sliding frame 11, and the slider 12 is threadedly connected to the connecting screw 13, and a first motor 14 is fixedly installed at one end of the sliding frame 11, and the output shaft of the first motor 14 is fixedly connected to one end of the connecting screw 13 The bottom of the slider 12 is fixedly connected with a connecting frame 15, and the connecting frame 15 is fixedly connected to the corresponding cutting machine 5; when working, the corresponding connecting screw 13 is driven to rotate by the output shaft of the first motor 14, and the slider 12 is made to move unidirectionally along the sliding connection of the sliding frame 11 through the threaded connection between the connecting screw 13 and the slider 12, thereby driving the connecting frame 15 to move, and making the cutting machine 5 in the working state move along the sliding track of the sliding frame 11, and in the process of moving, the cutting end of the cutting machine 5 contacts with one end of the corresponding pipe and cuts one end of the pipe.

[0037] As a further implementation scheme of the present invention, the angle adjustment mechanism includes a swing cylinder 16 and two connecting rods 17. The swing cylinder 16 is fixedly installed on the top of one of the fixed frames 4. The piston shaft of the swing cylinder 16 is fixedly connected to the corresponding first rotating shaft 10. The two connecting rods 17 are both arranged at the bottom of the two first rotating bars 9. The two ends of the connecting rod 17 are respectively rotatably connected to the adjacent ends of the two first rotating bars 9. When working, the corresponding first rotating shaft 10 is driven to rotate by the rotation of the piston shaft of the swing cylinder 16, so that the corresponding first rotating bar 9 rotates along the axis of the first rotating bar 10, and drives the cutting machine 5 to adjust the cutting angle. When the corresponding first rotating bar 9 rotates, the other first rotating bar 9 is rotated synchronously through the rotation connection between the two ends of the connecting rod 17 and the adjacent ends of the two first rotating bars 9, so that the two first rotating bars 9 always remain in a parallel state, so that the cutting angles of the two cutting machines 5 always remain parallel, ensuring that when the cutting angles of the two pipes change, the cutting surfaces of the pipes can always be fitted and docked.

[0038] As a further embodiment of the present invention, the matching adjustment mechanism includes a connecting plate 18, which is fixedly connected between the two fixed frames 4, a second rotating bar 19 is provided at the bottom of the connecting plate 18, a second rotating shaft 20 is fixedly connected at the center of the top of the second rotating bar 19, and the second rotating shaft 20 is rotatably connected to the connecting plate 18, and the two ends of the second rotating bar 19 are respectively rotatably connected to the tops of the two connecting rods 17, and a fixed block 21 is fixedly connected at the center of the bottom of the second rotating bar 19, and the fixed block 21 is fixedly connected to the top of the U-shaped shell 7; during operation, when the two connecting rods 17 move in opposite directions, the two ends of the second rotating bar 19 are respectively rotatably connected to the two connecting rods 17, so that the second rotating shaft 20 at the top of the second rotating bar 19 rotates synchronously along the rotating connection of the connecting plate 18, so that the second rotating bar 19 drives the fixed block 21 to rotate, and through the fixed connection between the fixed block 21 and the U-shaped shell 7, the U-shaped shell 7 and the annular frame 6 are synchronously adjusted in angle, and the cutting angles of the annular frame 6 and the cutting machine 5 are always kept parallel.

[0039] As a further embodiment of the present invention, the driving rotation mechanism includes a rotating ring 22 and a fixed shell 23. The rotating ring 22 is rotatably connected to the inside of the annular frame 6. The outer side of the rotating ring 22 is fixedly connected to an outer gear ring 24. A movable groove 25 is provided on the top of the annular frame 6. A second motor 26 is fixedly installed on one side of the U-shaped shell 7. The output shaft of the second motor 26 passes through the U-shaped shell 7 and extends to the inside of the U-shaped shell 7, and is fixedly connected to a first gear 27. The bottom of the first gear 27 extends into the movable groove 25 and meshes with the outer gear ring 24. The fixed shell 23 is fixedly connected to the inner side of the rotating ring 22. A circular disk 28 is arranged below the fixed shell 23. Two limit pins 29 are fixedly connected to the top of the circular disk 28. The two The limit pins 29 are all slidably inserted on the fixed shell 23, and a spring 30 is sleeved on the limit pin 29. The spring 30 is fixedly connected between the fixed shell 23 and the circular disk 28, and the welding gun 8 is fixedly installed at the bottom of the circular disk 28; when working, the first gear 27 is driven to rotate by the output shaft of the second motor 26, and the outer gear ring 24 is meshed with the first gear 27. The outer gear ring 24 drives the rotating ring 22 to rotate inside the annular frame 6, so that the fixed shell 23 rotates synchronously, and the circular disk 28 is rotated synchronously through the sliding connection between the limit pin 29 at the top of the circular disk 28 and the fixed shell 23, and drives the welding gun 8 to rotate, so that the welding gun 8 rotates along the annular trajectory of the annular frame 6.

[0040] As a further embodiment of the present invention, the elastic yielding mechanism comprises a connecting ring 31 (such as Figure 7As shown in the figure, the connecting ring 31 is rotatably connected to the side of the circular disk 28, the bottom of the connecting ring 31 is fixedly connected to the inner gear ring 32, the top of the circular disk 28 is fixedly installed with a third motor 33, the output shaft of the third motor 33 passes through the circular disk 28 and extends to the bottom of the circular disk 28 and is fixedly connected to the second gear 34, the second gear 34 and the inner gear ring 32 are meshed, the side of the connecting ring 31 is fixedly connected with two mounting strips 35 along the circumferential direction, the bottom of the mounting strips 35 are fixedly connected with contact pins 36, the bottom end of the contact pin 36 is provided with a spherical groove 37, the inside of the spherical groove 37 is rollingly connected with a ball 38, and the top of one of the mounting strips 35 is fixedly installed with a laser emitter 39 (as shown in the figure). Figure 7 As shown in FIG. 1 ), a U-shaped bar 40 is fixedly connected to one of the fixing frames 4, and a laser receiver 41 (as shown in FIG. 1 ) is fixedly installed at the bottom of the U-shaped bar 40. Figure 8 As shown in the figure), the laser receiver 41 and the laser transmitter 39 are arranged relatively to each other; when working, when the annular frame 6 is adjusted along the center point by cooperating with the adjustment mechanism, the welding gun 8 and the connecting ring 31 rotate synchronously, and the connecting ring 31 drives the mounting bar 35 and the laser transmitter 39 to rotate, so that the laser receiver 41 cannot receive the laser signal emitted by the laser transmitter 39, and then the third motor 33 is controlled to work by the controller connected to the laser receiver 41, and the output shaft of the third motor 33 rotates to drive the second gear 34 to rotate, and through the meshing action of the second gear 34 and the inner gear ring 32, the connecting ring 31 rotates along the rotating connection of the circular disk 28, until the laser receiver 41 receives the laser signal emitted by the laser transmitter 39 again, the third motor 33 stops working, and the laser receiver 41 is turned off. When the annular frame 6 drives the welding gun 8 to adjust the angle, the contact pin 36 at the bottom of the two U-shaped bars 40 is always located directly above the butted pipes, and the contact and extrusion between the ball 38 at the bottom of the contact pin 36 and the top of the pipe causes the circular disk 28 to drive the limit pin 29 to move upward to make way, and squeeze the spring 30 to generate compression. When the welding gun 8 performs unidirectional moving welding along the butt joint of the two pipes, the welding gun 8 always maintains a fixed distance from the pipe surface through the elastic stretching effect of the spring 30, and does not produce a change in the welding distance when moving along the elliptical cross section, thereby improving the pipe welding effect. In the process of moving the welding gun 8, the ball 38 at the bottom of the contact pin 36 replaces the welding gun 8 to contact the pipe surface, and rolls along the inside of the spherical groove 37 during the contact process, thereby reducing friction resistance.

[0041] As a further implementation scheme of the present invention, the two contact pins 36 are fixedly connected to the sides away from each other with an inclined guide bar 42, and a guiding slope is provided at the bottom end of the contact pin 36; during operation, when the two pipes are close to each other and docked after cutting, the contact pin 36 moves upward under the action of the guiding extrusion through the contact and extrusion of the inclined surface of the inclined guide bar 42 and the cut end of the pipe, thereby driving the welding gun 8 to move upward and squeeze the spring 30 to produce compression deformation, and when the cut end of the pipe moves to the bottom of the inclined guide bar 42, it continues to move along the guiding slope at the bottom end of the contact pin 36, so that the ball 38 at the bottom end of the contact pin 36 moves smoothly to the top of the pipe, thereby automatically adjusting the distance between the welding gun 8 and the pipe.

[0042] As a further implementation scheme of the present invention, an L-shaped plate 43 is fixedly connected to one side of the connecting frame 15, and a fourth motor 44 is fixedly installed on one side of the L-shaped plate 43. The output shaft of the fourth motor 44 passes through the L-shaped plate 43 and extends to the other side of the L-shaped plate 43, and is fixedly connected to a grinding wheel 45; when working, when the cutting machine 5 moves with the connecting frame 15 and performs mobile cutting on one end of the pipe, the grinding wheel 45 continues to move to the cutting surface of the pipe with the connecting frame 15, and is driven to rotate by the output shaft of the fourth motor 44, thereby rotationally grinding the cutting surface of the pipe, increasing the flatness of the cutting surface of the pipe, and improving the degree of fit at the butt joint of the two pipes.

[0043] As a further embodiment of the present invention, the clamping and fixing mechanism includes a plurality of strip grooves 46, which are circumferentially arranged inside the circular through groove 3, and a clamping strip 47 is arranged inside each of the strip grooves 46. A plurality of clearance grooves 48 are circumferentially arranged on one side of the clamping seat 2, and the clearance grooves 48 are connected to the corresponding strip grooves 46. A circular pin 49 is fixedly connected to one side of the clamping strip 47, and a limiting ring 50 is rotatably connected to one side of the clamping seat 2. A plurality of guide grooves 51 are circumferentially arranged on the limiting ring 50, and one end of the circular pin 49 extends along the corresponding clearance groove 48 to the inside of the guide groove 51, respectively. A fixing rod 52 is fixedly connected to the bottom of the limiting ring 50, and a light rod 53 is fixedly connected to one side of the fixing rod 52. A hydraulic cylinder 54 is fixedly installed on the clamping seat 2, and a piston shaft of the hydraulic cylinder 54 is provided. A limit strip 55 is fixedly connected, a limit groove 56 is connected to the limit strip 55, and the light rod 53 is located in the limit groove 56; when working, the limit strip 55 is driven to move by the piston shaft of the hydraulic cylinder 54, and the limit groove 56 on the limit strip 55 is used to limit the light rod 53, so that the light rod 53 moves in cooperation inside the limit groove 56, thereby driving the fixed rod 52 to move, and under the action of the fixed rod 52, the limit ring 50 is driven to rotate, and the circular pin 49 is guided by the guide groove 51 on the limit ring 50, so that the circular pin 49 moves along the yield groove 48 toward the circular through groove 3, and drives the clamping strip 47 to move synchronously along the strip groove 46 toward the circular through groove 3, so that one end of the plurality of clamping strips 47 moves synchronously toward the inside of the circular through groove 3 and clamps and fixes one end of the pipe.

[0044] As a further implementation scheme of the present invention, the mechanism for moving toward each other includes a sliding rod 57 and a bidirectional lead screw 58, the sliding rod 57 is fixedly connected to the mounting base 1, the bidirectional lead screw 58 is rotatably connected to the mounting base 1, the two clamping seats 2 are both slidably connected to the sliding rod 57, the two clamping seats 2 are both threadedly connected to the bidirectional lead screw 58, a fifth motor 59 is fixedly installed on the mounting base 1, and the output shaft of the fifth motor 59 is fixedly connected to one end of the bidirectional lead screw 58; when working, the bidirectional lead screw 58 is driven to rotate by the output shaft of the fifth motor 59, and the two clamping seats 2 are moved toward each other through the threaded connection between the bidirectional lead screw 58 and the two clamping seats 2, and the sliding rod 57 is used to limit the movement of the clamping seats 2 during the movement, so that the two clamping seats 2 drive the cut pipes to approach each other and the cut surfaces of the two pipes are butted.

[0045] Working principle of the present invention:

[0046] One end of the two pipes for welding and fixing is placed in the circular through groove 3 along the side away from each other of the two clamping seats 2, and one end of the pipe is clamped and fixed by the clamping and fixing mechanism, and then the cutting angle of the cutter 5 is adjusted by the angle adjustment mechanism, and then the two cutters 5 are displaced along the cutting angle by the displacement mechanism and one end of the pipe is moved and cut, so that the cutting surfaces of the adjacent ends of the two pipes are parallel to each other, and then the two clamping seats 2 are driven to move the corresponding pipes closer to each other by the relative movement mechanism, so that the cutting surfaces of the two pipes are located at the axis of the annular frame 6 and are butted, and the cutting surfaces of the cutter 5 are adjusted by the angle adjustment mechanism. When the cutting angle is adjusted, the annular frame 6 is synchronously adjusted in angle under the action of the adjustment mechanism, so that when the welding gun 8 rotates along the trajectory of the annular frame 6 by driving the rotating mechanism, the moving trajectory of the welding gun 8 is the same as the cutting surface trajectory of the pipeline, so that the butt joints of the two pipelines are completely welded, and when the welding gun 8 rotates around the pipeline surface for welding, the distance between the welding gun 8 and the pipeline is always kept synchronized through the action of the elastic giving way mechanism. When the pipeline is beveled and the cutting surface is elliptical, the welding gun 8 can still maintain the same moving spacing under the elliptical moving trajectory, thereby improving the welding effect of the pipeline and reducing the welding difficulty caused by the change of the pipeline cutting angle.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for cutting and welding pipelines in a water conservancy project, comprising a mounting base (1), characterized in that: Two clamping seats (2) are arranged on the top of the mounting base (1), and circular through grooves (3) are provided on the clamping seats (2). A clamping fixing mechanism is connected inside the circular through grooves (3), and a mechanism for moving toward each other is connected between the two clamping seats (2). Two fixing frames (4) are fixedly connected to the top of the mounting base (1), and a cutting machine (5) is arranged inside each fixing frame (4). The cutting machine (5) is connected to a displacement mechanism and an angle adjustment mechanism. An annular frame (6) is arranged between the two fixed frames (4); a U-shaped housing (7) is fixedly connected to the top of the annular frame (6); the annular frame (6) and the circular through groove (3) are coaxially arranged; a matching adjustment mechanism is connected to the annular frame (6); a welding gun (8) is arranged inside the annular frame (6); a driving rotation mechanism is connected between the welding gun (8) and the annular frame (6); and an elastic yielding mechanism is connected to the welding gun (8); The driving rotation mechanism comprises a rotating ring (22) and a fixed housing (23), wherein the rotating ring (22) is rotatably connected to the inside of the annular frame (6), an outer gear ring (24) is fixedly connected to the outside of the rotating ring (22), a movable groove (25) is provided on the top of the annular frame (6), a second motor (26) is fixedly mounted on one side of the U-shaped housing (7), an output shaft of the second motor (26) passes through the U-shaped housing (7) and extends to the inside of the U-shaped housing (7) and is fixedly connected to a first gear (27), and the bottom of the first gear (27) extends to the movable groove (25) of the U-shaped housing (7). The fixed housing (23) is fixedly connected to the inner side of the rotating ring (22), a circular plate (28) is arranged below the fixed housing (23), two limit pins (29) are fixedly connected to the top of the circular plate (28), the limit pins (29) are slidably inserted on the fixed housing (23), a spring (30) is sleeved on the limit pin (29), the spring (30) is fixedly connected between the fixed housing (23) and the circular plate (28), and the welding gun (8) is fixedly installed at the bottom of the circular plate (28); The elastic yielding mechanism comprises a connecting ring (31), the connecting ring (31) is rotatably connected to the side of the circular disk (28), the bottom of the connecting ring (31) is fixedly connected to an inner gear ring (32), the top of the circular disk (28) is fixedly mounted with a third motor (33), the output shaft of the third motor (33) passes through the circular disk (28) and extends to the bottom of the circular disk (28) and is fixedly connected to a second gear (34), the second gear (34) and the inner gear ring (32) are meshed, and the side of the connecting ring (31) is fixedly connected with two gears along the circumferential direction. A mounting bar (35) is provided, and a contact pin (36) is fixedly connected to the bottom of each mounting bar (35). A spherical groove (37) is provided at the bottom end of the contact pin (36). A ball (38) is rotatably connected inside the spherical groove (37). A laser transmitter (39) is fixedly installed on the top of one of the mounting bars (35). A U-shaped bar (40) is fixedly connected to one of the fixing frames (4). A laser receiver (41) is fixedly installed on the bottom of the U-shaped bar (40). The laser receiver (41) and the laser transmitter (39) are arranged relative to each other.

2. A device for cutting and welding a water conservancy project pipeline according to claim 1, characterized in that: The displacement mechanism comprises two first rotating bars (9), the two first rotating bars (9) are respectively arranged on the top surfaces inside the two fixed frames (4), a first rotating shaft (10) is fixedly connected at the center of the top of the first rotating bar (9), the first rotating shaft (10) is rotatably connected to the corresponding fixed frame (4), the bottom of the first rotating bar (9) is fixedly connected to a sliding frame (11), the inside of the sliding frame (11) is slidably connected to a slider (12), the inside of the sliding frame (11) is rotatably connected to a connecting screw (13), the slider (12) is threadedly connected to the connecting screw (13), one end of the sliding frame (11) is fixedly mounted with a first motor (14), the output shaft of the first motor (14) is fixedly connected to one end of the connecting screw (13), the bottom of the slider (12) is fixedly connected to a connecting frame (15), and the connecting frame (15) is fixedly connected to the corresponding cutting machine (5).

3. A device for cutting and welding a water conservancy project pipeline according to claim 2, characterized in that: The angle adjustment mechanism comprises a swing cylinder (16) and two connecting rods (17); the swing cylinder (16) is fixedly mounted on the top of one of the fixed frames (4); the piston shaft of the swing cylinder (16) is fixedly connected to the corresponding first rotating shaft (10); the two connecting rods (17) are both arranged at the bottom of the two first rotating bars (9); and the two ends of the connecting rod (17) are respectively rotatably connected to the adjacent ends of the two first rotating bars (9).

4. A device for cutting and welding a water conservancy project pipeline according to claim 3, characterized in that: The matching adjustment mechanism comprises a connecting plate (18), the connecting plate (18) being fixedly connected between the two fixing frames (4), a second rotating bar (19) being arranged at the bottom of the connecting plate (18), a second rotating shaft (20) being fixedly connected at the center of the top of the second rotating bar (19), the second rotating shaft (20) being rotatably connected to the connecting plate (18), two ends of the second rotating bar (19) being rotatably connected to the tops of the two connecting rods (17), a fixing block (21) being fixedly connected at the center of the bottom of the second rotating bar (19), and the fixing block (21) being fixedly connected to the top of the U-shaped housing (7).

5. A device for cutting and welding water conservancy engineering pipelines according to claim 1, characterized in that: The two contact pins (36) are both fixedly connected to an inclined guide strip (42) on one side away from each other, and a guiding inclined surface is provided at the bottom end of the contact pin (36).

6. A device for cutting and welding a water conservancy project pipeline according to claim 2, characterized in that: An L-shaped plate (43) is fixedly connected to one side of the connecting frame (15), a fourth motor (44) is fixedly mounted to one side of the L-shaped plate (43), and an output shaft of the fourth motor (44) passes through the L-shaped plate (43) and extends to the other side of the L-shaped plate (43) and is fixedly connected to a grinding wheel (45).

7. A device for cutting and welding a water conservancy project pipeline according to claim 1, characterized in that: The clamping and fixing mechanism comprises a plurality of strip grooves (46), the plurality of strip grooves (46) are circumferentially arranged inside the circular through groove (3), a clamping strip (47) is arranged inside each of the strip grooves (46), a plurality of clearance grooves (48) are circumferentially arranged on one side of the clamping seat (2), the clearance grooves (48) are all connected to the corresponding strip grooves (46), a circular pin (49) is fixedly connected to one side of the clamping strip (47), a limiting ring (50) is rotatably connected to one side of the clamping seat (2), and a limiting ring (50) is circumferentially arranged on the upper side of the limiting ring (50). A plurality of guide grooves (51), one end of the circular pin (49) respectively extends along the corresponding clearance groove (48) to the inside of the guide groove (51), a fixing rod (52) is fixedly connected to the bottom of the limiting ring (50), a light rod (53) is fixedly connected to one side of the fixing rod (52), a hydraulic cylinder (54) is fixedly mounted on the clamping seat (2), a limiting strip (55) is fixedly connected to the piston shaft of the hydraulic cylinder (54), the limiting strip (55) is connected to the limiting groove (56), and the light rod (53) is located in the limiting groove (56).

8. A device for cutting and welding a water conservancy project pipeline according to claim 1, characterized in that: The opposite movement mechanism comprises a sliding rod (57) and a bidirectional lead screw (58), wherein the sliding rod (57) is fixedly connected to the mounting base (1), the bidirectional lead screw (58) is rotatably connected to the mounting base (1), the two clamping seats (2) are both slidably connected to the sliding rod (57), the two clamping seats (2) are both threadedly connected to the bidirectional lead screw (58), a fifth motor (59) is fixedly mounted on the mounting base (1), and an output shaft of the fifth motor (59) is fixedly connected to one end of the bidirectional lead screw (58).

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