Large pipe welding device

Abstract

The application discloses a large pipe welding device and relates to the technical field of pipe welding. The device comprises a welding table, two parallel guide rails fixedly connected to the top surface of the welding table, movable pipe pushers arranged at the two ends of the guide rails, and support members arranged on the two sides of the welding table and used for supporting the pipe. When the large pipe welding device supports the large pipe, the first support device and the second support device on the two sides of the welding table support the large pipe. When the large pipe is supported, the straight surface of the special-shaped support block faces the outer wall of the large pipe, the rotating rod one which is perpendicular to the large pipe rolls against the pipe wall, the pipe pusher facilitates the transverse movement of the large pipe, the two ends of the large pipe to be welded are aligned, the special-shaped support block is rotated during welding, the rotating rod two of the arc surface of the special-shaped support block rolls against the large pipe, the pipe pusher facilitates the rotation of the large pipe, and the ring seam welding is realized.

Description

Technical Field

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

[0002] In shipbuilding companies, large-diameter pipe welding (usually referring to the welding of large-diameter pipes or important piping systems) is one of the key processes in shipbuilding, involving the connection of pipes for systems such as fuel oil, lubricating oil, cooling water, and ballast water.

[0003] Existing large pipe support frames typically require rotation to achieve circumferential welding when supporting large pipes. However, the roller frame drive method of existing support devices is singular. If two large pipes need to be aligned, they are usually driven to move relative to each other for alignment and then welding. In this case, the center line of the roller needs to be perpendicular to the center line of the pipe, but the large pipe cannot rotate at this time. A welding device is required to rotate and weld, which requires the installation of a ring track to guide the welding device. Since the diameter of the large pipes is not uniform, the diameter of the track needs to be adjusted when welding pipes of different diameters, making the overall device very cumbersome and affecting welding efficiency. Therefore, this invention proposes a large pipe welding device. Summary of the Invention

[0004] The purpose of this invention is to provide a large pipe welding device to solve the problem mentioned in the background art that the existing large pipe support has a single driving method, which means that the large pipe can only perform one of two functions, namely, unidirectional movement and rotation, when supported.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A large pipe welding device includes a welding table, the top surface of which is fixedly connected to two parallel guide rails, and movable pipe pushers are provided at both ends of the guide rails. Support members for supporting pipes are provided on both sides of the welding table. The support members include multiple first support devices arranged on both sides of the welding table, and second support devices fixed on the welding table are provided on both sides of the multiple first support devices. The two pipe pushers are used to push the pipe to move and clamp the pipe to rotate. A pipe welder for welding two aligned pipes is fixedly connected to one side of the welding table.

[0006] Preferably, both the first support device and the second support device include a buffer frame of the support member.

[0007] Preferably, the buffer frame includes a side plate fixed to the side of the welding table. An L-shaped slide plate is slidably inserted into the inside of the side plate. Two connecting rods are fixedly connected to the side wall of the slide plate. One end of the two connecting rods slides through the side plate and is fixedly connected to a push plate. A spring is fixedly connected to one side of the push plate and the side plate. The spring is sleeved on the outer wall of the connecting rod. A groove is opened on the top surface of the slide plate. A U-shaped frame that can move along the groove is provided on the top surface of the groove. An irregular support block that abuts against the pipe is provided in the inner cavity of the U-shaped frame. A connecting rod is fixedly connected to the three irregular support blocks on one side of the welding table. Two connecting rods are fixedly connected to the opposite side of the push plate and the U-shaped frame.

[0008] Preferably, a guide rod is fixedly connected inside the slide groove, and a slider is slidably sleeved on the outer wall of the guide rod. The slider is fixedly connected to the U-shaped frame, and a spring two sleeved on the outer wall of the guide rod is fixedly connected to one side of the slider and the side wall of the slide groove.

[0009] Preferably, rotating rollers are fixedly connected to both sides of the irregular support block of the buffer frame, and the rotating rollers all pass through the U-shaped frame. A worm gear is fixedly connected to one end of the U-shaped frame of the first support device. A servo motor is fixedly connected to one side of the push plate of the first support device. A worm gear that meshes with the worm gear is fixedly connected to the output end of the servo motor. A fixed plate that rotates with the worm gear is fixedly connected to one side of the U-shaped frame of the first support device.

[0010] Preferably, one end of the rotating roller of the second support device is fixedly connected to a rotating circular plate, one side of the U-shaped frame of the second support device is provided with a guide groove, one end of the rotating circular plate is fixedly connected to a guide rod, and one end of the guide rod extends into the inner cavity of the guide groove.

[0011] Preferably, the top surface of the irregular support block has a straight surface and an arc surface. The top surface of the straight surface has a fixing groove 1. Two rotating rods 1 perpendicular to the rotating rod are rotatably connected in the inner cavity of the fixing groove 1. Both ends of the rotating rods 1 are chamfered. The top surface of the arc surface has a fixing groove 2. A rotating rod 2 parallel to the rotating rod is rotatably connected in the inner cavity of the fixing groove 2. The connection between the straight surface and the arc surface is chamfered.

[0012] Preferably, the pipe pusher includes a movable table that moves along guide rails. Each of the four legs of the movable table is rotatably connected to a wheel, which is located between two guide rails. A servo motor is fixedly connected to the bottom surface of the movable table. A pulley is fixedly connected to the output end of the servo motor. A transmission roller is fixedly connected between two wheels on one side of the movable table. A pulley is fixedly sleeved on the rod wall of the transmission roller. A synchronous belt rotatably connects the pulley and the pulley. A transmission box is fixedly connected to the top surface of the movable table. One side of the transmission box is provided with an electric three-finger gripper for clamping the pipe, and another side of the transmission box is provided with a drive source for rotating the electric three-finger gripper.

[0013] Preferably, the drive source includes a servo motor fixed to the bottom of the mobile table, a pulley two fixedly connected to the output end of the servo motor one, a transmission rod rotatably connected inside the transmission box, one end of the transmission rod being fixedly connected to one side of an electric three-finger gripper, and the other end of the transmission rod being fixedly connected to a pulley one. The pulley one and the pulley two are rotatably connected by a synchronous belt.

[0014] Preferably, the pipe welder includes a support plate fixedly connected to a welding table, a cylinder is fixedly connected to the top of the support plate, a movable plate is fixedly connected to the output end of the cylinder, a mounting plate is fixedly connected to one side of the movable plate, a cylinder is fixedly connected to one end of the mounting plate, a connecting plate is fixedly connected to the output end of the cylinder, and a welding torch for welding pipes is fixedly connected to the bottom surface of the connecting plate.

[0015] Technical effects and advantages of the present invention: The present invention proposes a large pipe welding device. When the large pipe is supported, the large pipe is supported by a first support device and a second support device on both sides of the welding table. During support, the straight surface of the irregular support block faces the outer wall of the large pipe, so that the rotating rod one perpendicular to the large pipe rolls with the pipe wall, which facilitates the pipe pusher to push the large pipe to move laterally, so that the two ends of the large pipe to be welded are aligned. During welding, the irregular support block is rotated so that the rotating rod two on the arc surface of the irregular support block rolls and contacts the large pipe, which facilitates the pipe pusher to drive the large pipe to rotate and realize circumferential welding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the support structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the first support device structure of the present invention.

[0019] Figure 4This is a schematic diagram of the irregular support block structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the pipe actuator structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the pipe welder structure of the present invention.

[0022] Figure 7 for Figure 2 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Welding table; 2. Guide rail; 3. First support device; 4. Second support device; 5. Pipe pusher; 51. Moving table; 52. Transmission box; 521. Transmission rod; 53. Electric three-finger gripper; 54. Pulley 1; 55. Servo motor 1; 551. Pulley 2; 56. Servo motor 2; 561. Pulley 3; 57. Wheels; 571. Pulley 4; 6. Pipe welder; 61. Support plate; 62. Cylinder 1; 63. Moving plate; 64. Cylinder 2; 65. Mounting plate; 66. Connecting plate; 67. Welding torch; 7. Side plate; 71. Slide plate; 72. Push plate; 721. Spring 1; 722. Worm gear; 723. Servo motor 3; 73. Link 1; 75. Connecting rod; 77. U-shaped frame; 771. Fixed plate; 772. Slider; 773. Rotating circular plate; 774. Guide rod; 775. Guide groove; 78. Slide groove; 781. Guide rod; 782. Spring 2; 79. Link 2; 8. Irregular support block; 81. Straight surface; 811. Fixed groove 1; 812. Rotating rod 1; 82. Rotating roller; 821. Worm gear; 83. Curved surface; 84. Fixed groove 2; 841. Rotating rod 2. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides, for example Figure 1-7The large pipe welding device shown includes a welding table 1. Two parallel guide rails 2 are fixedly connected to the top surface of the welding table 1. Movable pipe pushers 5 are provided at both ends of the guide rails 2. Support components for supporting pipes are provided on both sides of the welding table 1. The support components include multiple first support devices 3 provided on both sides of the welding table 1. Second support devices 4 are fixed on the welding table 1 on both sides of the multiple first support devices 3. The two pipe pushers 5 are used to push the pipe to move and clamp the pipe to rotate. A pipe welder 6 for welding two aligned pipes is fixedly connected to one side of the welding table 1.

[0026] The present invention first hoists the large pipe between the support members on both sides of the supporting pipe to support the large pipe. After the large pipe is supported, the two large pipes are pushed by the pipe pusher 5 to align the two large pipes. After alignment, the large pipes are clamped and rotated by the pipe pusher 5. At the same time, the pipe welder 6 welds the two aligned large pipes to complete the pipe welding.

[0027] like Figure 2 and Figure 3 As shown, both the first support device 3 and the second support device 4 include a buffer frame for the support members.

[0028] like Figure 2 and Figure 3 As shown, the buffer frame includes a side plate 7 fixed to the side of the welding table 1. An L-shaped slide plate 71 is slidably inserted into the inside of the side plate 7. Two connecting rods 73 are fixedly connected to the side wall of the slide plate 71. One end of the two connecting rods 73 slides through the side plate 7 and is fixedly connected to a push plate 72. A spring 721 is fixedly connected to one side of the push plate 72 and the side plate 7. The spring 721 is sleeved on the outer wall of the connecting rod 73. A groove 78 is opened on the top surface of the slide plate 71. A U-shaped frame 77 that can move along the groove 78 is provided on the top surface of the groove 78. An irregular support block 8 that abuts the pipe is provided in the inner cavity of the U-shaped frame 77. A connecting rod 75 is fixedly connected between the three irregular support blocks 8 on one side of the welding table 1. Two connecting rods 79 are fixedly connected to the opposite side of the push plate 72 and the U-shaped frame 77.

[0029] A slide plate 71 is slidably inserted into the side plate of the buffer frame. A connecting rod 73 is fixedly connected between the side of the slide plate 71 and the push plate 72. A spring 721 is sleeved on the outer wall of the connecting rod 73 and fixed between the push plate 72 and the side plate 7. The connecting rod 73 is also connected between the push plate 72 and the U-shaped frame 77. When the irregular support block 8 supports the large tube, the irregular support block 8 can move along the side plate 7 according to the weight of the large tube, increasing the contact angle between the two irregular support blocks 8 and the large tube, so that the large tube is stably supported.

[0030] like Figure 3As shown, a guide rod 781 is fixedly connected inside the slide groove 78, and a slider 772 is slidably sleeved on the outer wall of the guide rod 781. The slider 772 is fixedly connected to the U-shaped frame 77, and a spring 782 sleeved on the outer wall of the guide rod 781 is fixedly connected to one side of the slider 772 and the side wall of the slide groove 78.

[0031] The sliding block 772 at the bottom of the U-shaped frame 77 is fixedly connected to the slide groove 78, and the spring 782 sleeved on the outer wall of the guide rod 781 increases the supporting force of the irregular support block 8, so as to prevent the large tube from slipping between the two irregular support blocks 8 due to excessive weight.

[0032] like Figure 2 and Figure 3 As shown, rotating rollers 82 are fixedly connected to both sides of the irregular support blocks 8 of the first support device 3 and the second support device 4. The rotating rollers 82 pass through the U-shaped frame 77. A worm gear 821 is fixedly connected to one end of the U-shaped frame 77 of the first support device 3. A servo motor 723 is fixedly connected to one side of the push plate 72 of the first support device 3. A worm 722 that meshes with the worm gear 821 is fixedly connected to the output end of the servo motor 723. A fixed plate 771 that rotatably connects to the worm 722 is fixedly connected to one side of the U-shaped frame 77 of the first support device 3.

[0033] The servo motor 723 drives the worm gear 722 to rotate, which in turn drives the worm wheel 821 to rotate. The rotation of the worm wheel 821 drives the rotating roller 82 to rotate, which in turn drives the irregular support block 8 to rotate. Since the irregular support block 8 of the first support device 3 and the irregular support block 8 of the second support device 4 are fixedly connected by a connecting rod 75, the irregular support block 8 of the first support device 3 and the irregular support block 8 of the second support device 4 can rotate synchronously.

[0034] like Figure 7 As shown, one end of the rotating roller 82 of the second support device 4 is fixedly connected to a rotating circular plate 773, and one side of the U-shaped frame 77 of the second support device 4 is provided with a guide groove 775. One end of the rotating circular plate 773 is fixedly connected to a guide rod 774, and one end of the guide rod 774 extends into the inner cavity of the guide groove 775.

[0035] One end of the rotating roller 82 of the second support device 4 is fixedly connected to a rotating circular plate 773. One side of the rotating circular plate 773 is fixedly connected to a guide rod 774 inserted into the guide groove 775. This allows the angle of the irregular support block 8 to be controlled when it rotates, preventing the irregular support block 8 from rotating too much and causing the large tube to contact other surfaces of the irregular support block 8, thus preventing the large tube from rotating or moving.

[0036] like Figure 4As shown, the top surface of the irregular support block 8 has a straight surface 81 and an arc surface 83. The top surface of the straight surface 81 has a fixing groove 811. Two rotating rods 812 perpendicular to the rotating rod 82 are rotatably connected in the inner cavity of the fixing groove 811. Both ends of the rotating rods 812 are chamfered. The top surface of the arc surface 83 has a fixing groove 84. A rotating rod 841 parallel to the rotating rod 82 is rotatably connected in the inner cavity of the fixing groove 84. The connection between the straight surface 81 and the arc surface 83 is chamfered.

[0037] When the irregular support block 8 supports the large pipe, it first comes into contact with the large pipe through the rotating rod 812. Since the rotating rod 812 is in perpendicular contact with the large pipe, the large pipe can be translated to facilitate the alignment of the two large pipes. After alignment, the outer wall of the large pipe comes into contact with the rotating rod 841 by rotating the irregular support block 8. Since the rotating rod 841 is placed parallel to the large pipe, the large pipe can be rotated, which facilitates the ring welding of the large pipe.

[0038] like Figure 5 As shown, the pipe pusher 5 includes a movable table 51 that moves along the guide rail 2. The bottom ends of the four legs of the movable table 51 are rotatably connected to wheels 57. The wheels 57 are located between the two guide rails 2. The bottom surface of the movable table 51 is fixedly connected to a servo motor 56. The output end of the servo motor 56 is fixedly connected to a pulley 561. A transmission roller is fixedly connected between the two wheels 57 on one side of the movable table 51. A pulley 571 is fixedly sleeved on the rod wall of the transmission roller. A synchronous belt is rotatably connected between the pulley 571 and the pulley 561. The top surface of the movable table 51 is fixedly connected to a transmission box 52. One side of the transmission box 52 is provided with an electric three-finger gripper 53 for clamping the pipe. One side of the transmission box 52 is provided with a drive source for driving the electric three-finger gripper 53 to rotate.

[0039] When the pipe pusher 5 is in use, the servo motor 2 56 drives the pulley 3 561 to rotate. The rotation of the pulley 3 561 drives the pulley 4 571 to rotate, which in turn allows the moving table 51 to move along the guide rail 2 until it is close to one end of the large pipe. At this time, the electric three-finger gripper 53 is activated to clamp the outer wall of the large pipe. Then, the drive source is activated to drive the electric three-finger gripper 53 to rotate, which in turn drives the large pipe to rotate.

[0040] like Figure 5 As shown, the driving source includes a servo motor 55 fixed to the bottom of the mobile table 51. The output end of the servo motor 55 is fixedly connected to a pulley 551. A transmission rod 521 is rotatably connected inside the transmission box 52. One end of the transmission rod 521 is fixedly connected to one side of the electric three-finger gripper 53. The other end of the transmission rod 521 is fixedly connected to a pulley 54. The pulley 54 and the pulley 551 are rotatably connected by a synchronous belt.

[0041] The servo motor 55 drives the pulley 551 to rotate, which in turn drives the pulley 54 to rotate, which in turn drives the transmission rod 521 to rotate, which in turn drives the electric three-finger gripper 53 to rotate, which in turn drives the large tube to rotate.

[0042] like Figure 6 As shown, the pipe welder 6 includes a support plate 61 fixedly connected to the welding table 1. A cylinder 62 is fixedly connected to the top of the support plate 61. A moving plate 63 is fixedly connected to the output end of the cylinder 62. A mounting plate 65 is fixedly connected to one side of the moving plate 63. A cylinder 64 is fixedly connected to one end of the mounting plate 65. A connecting plate 66 is fixedly connected to the output end of the cylinder 64. A welding torch 67 for welding pipes is fixedly connected to the bottom surface of the connecting plate 66.

[0043] The output end of cylinder 62 can drive the moving plate 63 to be adjusted vertically. The moving plate 63 can drive the connecting plate 66 to move. Cylinder 64 can drive the connecting plate 66 to move, thereby driving the welding torch 67 to be adjusted in direction. Thus, the welding torch 67 can be aligned with the weld seam of the pipe with different diameters.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large pipe welding apparatus, comprising a welding table (1), characterized in that: The top surface of the welding table (1) is fixedly connected to two parallel guide rails (2). The two ends of the guide rails (2) are provided with movable pipe pushers (5). Both sides of the welding table (1) are provided with support members for supporting pipes. The support members include multiple first support devices (3) provided on both sides of the welding table (1). Both sides of the multiple first support devices (3) are provided with second support devices (4) fixed on the welding table (1). The two pipe pushers (5) are used to push the pipe to move and clamp the pipe to rotate. One side of the welding table (1) is fixedly connected to a pipe welder (6) for welding two aligned pipes. Both the first support device (3) and the second support device (4) include a buffer frame for the support members; The buffer frame includes a side plate (7) fixed to the side of the welding table (1). An L-shaped sliding plate (71) is slidably inserted into the inside of the side plate (7). Two connecting rods (73) are fixedly connected to the side wall of the sliding plate (71). One end of the two connecting rods (73) slides through the side plate (7) and is fixedly connected to a push plate (72). A spring (721) is fixedly connected to one side of the push plate (72) and the side plate (7). The spring (721) is sleeved on the connecting rod (73). 3) The top surface of the slide plate (71) is provided with a slide groove (78), the top surface of the slide groove (78) is provided with a U-shaped frame (77) that can move along the slide groove (78), the inner cavity of the U-shaped frame (77) is provided with a non-circular support block (8) that abuts the pipe, and the three non-circular support blocks (8) on one side of the welding table (1) are fixedly connected with a connecting rod (75), and the push plate (72) and the opposite surface of the U-shaped frame (77) are fixedly connected with two connecting rods (79); A guide rod (781) is fixedly connected inside the slide groove (78). A slider (772) is slidably sleeved on the outer wall of the guide rod (781). The slider (772) is fixedly connected to the U-shaped frame (77). One side of the slider (772) and the side wall of the slide groove (78) are fixedly connected to a spring (782) sleeved on the outer wall of the guide rod (781). Both sides of the irregular support block (8) of the buffer frame are fixedly connected with rotating rods (82), and the rotating rods (82) all pass through the U-shaped frame (77). One end of the U-shaped frame (77) of the first support device (3) is fixedly connected with a worm gear (821). One side of the push plate (72) of the first support device (3) is fixedly connected with a servo motor (723). The output end of the servo motor (723) is fixedly connected with a worm (722) that meshes with the worm gear (821). One side of the U-shaped frame (77) of the first support device (3) is fixedly connected with a fixing plate (771) that rotates with the worm (722). The top surface of the irregular support block (8) is provided with a straight surface (81) and an arc surface (83). The top surface of the straight surface (81) is provided with a fixing groove (811). Two rotating rods (812) perpendicular to the rotating rod (82) are rotatably connected in the inner cavity of the fixing groove (811). Both ends of the rotating rods (812) are provided with chamfers. The top surface of the arc surface (83) is provided with a fixing groove (84). A rotating rod (841) parallel to the rotating rod (82) is rotatably connected in the inner cavity of the fixing groove (84). The connection between the straight surface (81) and the arc surface (83) is provided with a chamfer.

2. The large pipe welding device according to claim 1, characterized in that: One end of the rotating roller (82) of the second support device (4) is fixedly connected to a rotating circular plate (773). One side of the U-shaped frame (77) of the second support device (4) is provided with a guide groove (775). One end of the rotating circular plate (773) is fixedly connected to a guide rod (774). One end of the guide rod (774) extends into the inner cavity of the guide groove (775).

3. The large pipe welding device according to claim 1, characterized in that: The pipe pusher (5) includes a movable table (51) that moves along the guide rail (2). The bottom of the four legs of the movable table (51) are rotatably connected to wheels (57). The wheels (57) are located between the two guide rails (2). The bottom surface of the movable table (51) is fixedly connected to a servo motor (56). The output end of the servo motor (56) is fixedly connected to a pulley (561). A transmission roller is fixedly connected between the two wheels (57) on one side of the movable table (51). A pulley (571) is fixedly sleeved on the rod wall of the transmission roller. A synchronous belt is rotatably connected between the pulley (571) and the pulley (561). A transmission box (52) is fixedly connected to the top surface of the movable table (51). An electric three-finger gripper (53) for clamping the pipe is provided on one side of the transmission box (52). A drive source for driving the electric three-finger gripper (53) to rotate is provided on one side of the transmission box (52).

4. The large pipe welding device according to claim 3, characterized in that: The driving source includes a servo motor (55) fixed to the bottom of the mobile table (51). The output end of the servo motor (55) is fixedly connected to a pulley (551). The transmission box (52) is rotatably connected to a transmission rod (521). One end of the transmission rod (521) is fixedly connected to one side of an electric three-finger gripper (53). The other end of the transmission rod (521) is fixedly connected to a pulley (54). The pulley (54) and the pulley (551) are rotatably connected by a synchronous belt.

5. The large pipe welding device according to claim 1, characterized in that: The pipe welder (6) includes a support plate (61) fixedly connected to the welding table (1). A cylinder (62) is fixedly connected to the top of the support plate (61). A moving plate (63) is fixedly connected to the output end of the cylinder (62). A mounting plate (65) is fixedly connected to one side of the moving plate (63). A cylinder (64) is fixedly connected to one end of the mounting plate (65). A connecting plate (66) is fixedly connected to the output end of the cylinder (64). A welding torch (67) for welding pipes is fixedly connected to the bottom surface of the connecting plate (66).

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