Welding equipment for petroleum pipeline and welding method thereof

Abstract

The invention discloses petroleum pipeline welding equipment and a welding method thereof, and relates to the technical field of petroleum pipeline welding. The welding equipment for the petroleum pipeline comprises a workbench, the workbench is rotationally sleeved with a fixing shaft through a bearing, the upper end of the fixing shaft is fixedly connected with a connecting block, the outer surface of the side, away from the fixing shaft, of the connecting block is fixedly connected with a rotating block, and a first welding mechanism is arranged on the rotating block; according to the welding equipment for the petroleum pipeline and the welding method of the welding equipment, the rotating block rotates to drive the pipeline fixed to the first limiting arc block to rotate, and then the angle between the pipeline fixed to the second limiting arc block and the pipeline fixed to the first limiting arc block is changed; and therefore, the welding equipment for the petroleum pipeline can weld two sections of pipelines at different angles, and the practicability and flexibility of the welding equipment for the petroleum pipeline are improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil pipeline welding, and in particular to oil pipeline welding equipment and a welding method thereof. Background Art

[0002] Oil pipelines are pipelines used to transport oil. Since oil pipelines are long, people need to weld the pipelines after they are made.

[0003] Depending on the application scenarios, some oil pipelines are welded perpendicularly to each other, while some require other angles. For example, the welding angle between some pipelines is sixty degrees. However, the existing oil pipeline welding angles are relatively single, which makes the oil pipeline welding equipment less practical and less flexible. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a welding device and a welding method for a petroleum pipeline, which can solve the problem that depending on the different use occasions, the welding between some petroleum pipelines is perpendicular to each other, while the welding between some petroleum pipelines requires other angles. For example, the welding angle between some pipelines is sixty degrees, while the welding angle of the existing petroleum pipelines is relatively single, which makes the practicality and flexibility of the welding device of the petroleum pipeline weak.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A welding device for a petroleum pipeline and a welding method thereof, comprising a workbench, on which a fixed shaft is provided through a bearing rotating sleeve;

[0007] Wherein, the upper end of the fixed shaft is fixedly connected with a connecting block;

[0008] Wherein, a rotating block is fixedly connected to an outer surface of a side of the connecting block away from the fixed axis;

[0009] Wherein, a first welding mechanism is arranged on the rotating block, and the first welding mechanism comprises a first sliding groove, a first sliding block, a first limiting arc block, a first worm gear, a second worm gear, a first supporting block, a first worm, a first bidirectional threaded rod, a second supporting block, a supporting rod and a second worm;

[0010] Among them, a second welding mechanism is arranged on the workbench, and the second welding mechanism includes a second sliding groove, a second sliding block, a second limiting arc block, a third supporting block, a first bevel gear, a second bevel gear, a connecting rod, an electric push rod, a mounting block, a mounting groove, a motor, a second bidirectional threaded rod, a fixed block, a limiting block, a limiting block, a limiting groove and a third bidirectional threaded rod.

[0011] Preferably, the two electric push rods are fixedly connected to the upper surface of the workbench;

[0012] Wherein, the mounting block is fixedly connected to the telescopic ends of the two electric push rods;

[0013] Wherein, a plurality of mounting grooves are provided on the upper surface of the mounting block, and the mounting grooves extend out of the lower surface of the mounting block;

[0014] Wherein, a plurality of limiting grooves are arranged on the upper surface of the mounting block, and the limiting grooves extend out of the lower surface of the mounting block.

[0015] Preferably, the motor is fixedly connected to the right side surface of the mounting block;

[0016] Wherein, the second bidirectional threaded rod is fixedly connected to the rotating output shaft of the mounting block;

[0017] Wherein, the left end of the second bidirectional threaded rod rotates and penetrates the left side surface of the mounting block;

[0018] The second bidirectional threaded rod rotates and passes through the multiple installation grooves, the second bidirectional threaded rod is provided with multiple sets of bidirectional threads, and the multiple sets of bidirectional threads on the second bidirectional threaded rod are located in the multiple installation grooves;

[0019] Wherein, the two fixing blocks are threadedly sleeved on the corresponding second bidirectional threaded rods.

[0020] Preferably, the two limiting blocks are fixedly connected to the upper surfaces of the two corresponding fixing blocks;

[0021] Wherein, the two limit blocks are fixedly connected to the front side surfaces of the two corresponding limit blocks;

[0022] Wherein, two first sliding grooves are provided on the upper surface of the rotating block, and the first sliding grooves extend out of the lower surface of the rotating block;

[0023] The two third bidirectional threaded rods are rotatably connected between the front and rear inner walls of the two first sliding grooves.

[0024] Preferably, the front end of the third bidirectional threaded rod rotates and passes through the front side surface of the rotating block;

[0025] Wherein, the two first worm gears are fixedly connected to the front end of the third bidirectional threaded rod;

[0026] Wherein, the first support block is fixedly connected to the lower surface of the workbench;

[0027] Wherein, the first worm is rotatably sleeved on the first support block through a bearing;

[0028] Wherein, the second worm gear is fixedly connected to the lower end of the fixed shaft;

[0029] The second worm wheel is meshingly connected with the first worm.

[0030] Preferably, the four first sliding blocks are threadedly sleeved on the outer surfaces of the two third bidirectional threaded rods;

[0031] Wherein, the four first limit arc blocks are fixedly connected to the upper surfaces of the four first sliding blocks;

[0032] Wherein, the first sliding block is slidably connected with the corresponding first sliding groove;

[0033] Wherein, the two first sliding blocks are located at two opposite threads of the corresponding third bidirectional threaded rod;

[0034] Wherein, the two second supporting blocks are fixedly connected to the front side surface of the rotating block.

[0035] Preferably, the support rod is rotatably sleeved on the two second support blocks;

[0036] Wherein, two second worms are fixedly sleeved on the outer surface of the support rod;

[0037] Wherein, the two first worm gears are fixedly connected to the front ends of the two third bidirectional threaded rods;

[0038] Among them, the first limiting arc blocks on the front and rear sides are arranged in a mirror image.

[0039] Preferably, two of the second sliding grooves are provided on the upper surface of the workbench, and the second sliding grooves extend out of the lower surface of the workbench;

[0040] Wherein, the two first bidirectional threaded rods are rotatably connected between the front and rear inner walls of the two second sliding grooves;

[0041] The front ends of the two first bidirectional threaded rods rotate and penetrate the front side surface of the workbench;

[0042] Wherein, the two second bevel gears are fixedly connected to the front ends of the two first bidirectional threaded rods;

[0043] Wherein, two third support blocks are fixedly connected to the front side surface of the workbench.

[0044] Preferably, the connecting rod is rotatably sleeved on two third supporting blocks;

[0045] Wherein, the two first bevel gears are fixedly sleeved on the outer surface of the connecting rod;

[0046] Wherein, the first bevel gear is meshed and connected with the second bevel gear;

[0047] Wherein, the four second sliding blocks are threadedly sleeved on the outer surfaces of the two first bidirectional threaded rods.

[0048] Preferably, the second sliding block is slidably connected to the corresponding second sliding groove;

[0049] Wherein, the four second limiting arc blocks are fixedly connected to the upper surfaces of the four second sliding blocks;

[0050] Wherein, the second limiting arc block and the first limiting arc block are both in arc shape.

[0051] A welding method for a welding device of a petroleum pipeline,

[0052] S1: Place the pipe between the second limit arc blocks on the front and rear sides, and then start rotating the connecting rod. The rotation of the connecting rod synchronously drives the two first bevel gears to rotate, and the connecting rod synchronously drives the second bevel gear to rotate, and then synchronously drives the first bidirectional threaded rod to rotate. The rotation of the first bidirectional threaded rod drives the second limit arc blocks and the second sliding blocks on the front and rear sides to move closer to or away from each other. When the second limit arc blocks on the front and rear sides approach each other, the pipe is clamped, and then the pipe is fixed and positioned.

[0053] S2: Place the pipe between the first limiting arc blocks on the front and rear sides, and then rotate the support rod, which drives the two second worms to rotate, and the two second worms rotate synchronously to drive the two first worm wheels to rotate, and then synchronously drive the third bidirectional threaded rod to rotate, and then synchronously drive the first limiting arc blocks on the front and rear sides to move closer to or away from each other. When the first limiting arc blocks on the front and rear sides move closer to each other, the pipe can be squeezed and clamped, and then the pipe is fixed and positioned;

[0054] S3: Rotate the first worm again, the first worm rotates synchronously to drive the second worm wheel to rotate, the second worm wheel rotates synchronously with the fixed shaft and the connecting block to rotate, and then synchronously drives the rotating block to rotate, the rotating block rotates to drive the pipeline fixed on the first limit arc block to rotate, so that the angle between the pipeline fixed on the second limit arc block and the pipeline fixed on the first limit arc block changes, so that the welding equipment of the oil pipeline can weld the two sections of the pipeline at different angles;

[0055] S4: Finally, pass the pipeline through the limit groove, and then start the motor. The motor starts to drive the second bidirectional threaded rod to rotate. The rotation of the second bidirectional threaded rod synchronously drives the corresponding two fixed blocks to move closer to or away from each other, and then synchronously drives the corresponding limit blocks to move closer to or away from each other. When the two limit blocks move closer to each other, the pipeline can be fixed vertically.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] 1. A welding device and a welding method for an oil pipeline, wherein the rotating block rotates to drive the pipeline fixed on the first limiting arc block to rotate, thereby causing the angle between the pipeline fixed on the second limiting arc block and the pipeline fixed on the first limiting arc block to change, so that the welding device for the oil pipeline can weld two sections of the pipeline at different angles, thereby increasing the practicality and flexibility of the welding device for the oil pipeline.

[0058] 2. This kind of oil pipeline welding equipment and welding method, when the second limiting arc block and the first limiting arc block are in the same straight line, the second limiting arc block and the first limiting arc block can clamp and fix a section of the pipeline at the same time, and the pipeline with a longer fixed length is more stable, and the pipeline with a longer fixed length is more stable, thereby increasing the practicality and stability of the oil pipeline welding equipment.

[0059] 3. This kind of oil pipeline welding equipment and welding method, when the two limit blocks are close to each other, the pipeline can be vertically fixed, and then the two pipelines can be welded perpendicular to each other, making the vertical welding of the two pipelines faster and more convenient, thereby increasing the practicality of the oil pipeline welding equipment.

[0060] 4. In the welding equipment and welding method of the oil pipeline, the meshing connection between the second worm wheel and the first worm screw limits the fixed shaft and the rotating block simultaneously. Because the meshing of the worm wheel and the worm screw is self-locking, the second worm wheel will not rotate without rotating the first worm screw, thereby ensuring the stability of the rotating block and avoiding shaking of the pipeline after being fixed on the first limiting arc block, thereby increasing the stability of the welding equipment of the oil pipeline.

[0061] 5. In the welding equipment and welding method of the oil pipeline, the second bidirectional threaded rod can rotate synchronously to drive multiple groups of bidirectional threads to rotate, so that multiple pipelines can be fixed in the vertical direction at the same time, which is more efficient and energy-saving, thereby increasing the practicality of the welding equipment for the oil pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0063] Figure 1 This is an overall schematic diagram of a welding device for a petroleum pipeline and a welding method thereof according to the present invention;

[0064] Figure 2 is a schematic diagram of a second sliding block of the present invention;

[0065] Figure 3 It is a schematic diagram of a workbench of the present invention;

[0066] Figure 4It is a schematic diagram of the installation block of the present invention;

[0067] Figure 5 Schematic diagram of the rotating block of the present invention

[0068] Figure 6 Schematic diagram of the connecting rod of the present invention

[0069] Figure 7 It is a schematic diagram of a second bidirectional threaded rod of the present invention.

[0070] 1. The first and second worm gears are as follows: 1. The first and second worm gears are as follows: 2. The first and second worm gears are as follows: 3. The first and second worm gears are as follows: 4. The first and second worm gears are as follows: 5. The first and second worm gears are as follows: 6. The first and second worm gears are as follows: 7. The first and second worm gears are as follows: 8. The first and second worm gears are as follows: 9. The first and second worm gears are as follows: 10. The first and second worm gears are as follows: 11. The first and second worm gears are as follows: 12. The second and second worm gears are as follows: 13. The first and second worm gears are as follows: 14. The first and second worm gears are as follows: 15. The first and second worm gears are as follows: 16. The second and second worm gears are as follows: 17. The second and second worm gears are as follows: 18. The second and second worm gears are as follows: 19. The first and second worm gears are as follows: 20. The first and second bevel gears are as follows: 21. The second bevel gears are as follows: 22. The second and second bevel gears are as follows: 23. The electric push rods are as follows: 24. The mounting blocks are as follows: 25. The mounting grooves are as follows: 26. The motors are as follows: 27. The second and second worm gears are as follows: 28. The first and second worm gears are as follows: 29. The first and second worm gears are as follows: 10. The first and second worm gears are as follows: DETAILED DESCRIPTION

[0071] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0072] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0073] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0074] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0075] See also Figure 1-7 , the present invention provides a technical solution: comprising a workbench 1, on which a fixed shaft 2 is provided through a bearing rotating sleeve;

[0076] Wherein, the upper end of the fixed shaft 2 is fixedly connected with a connecting block 3;

[0077] The outer surface of the connecting block 3 on one side away from the fixed shaft 2 is fixedly connected with a rotating block 4;

[0078] Among them, a first welding mechanism is arranged on the rotating block 4, and the first welding mechanism includes a first sliding groove 5, a first sliding block 6, a first limiting arc block 7, a first worm gear 8, a second worm gear 9, a first supporting block 10, a first worm 11, a first bidirectional threaded rod 13, a second supporting block 14, a supporting rod 15 and a second worm 16;

[0079] Among them, a second welding mechanism is arranged on the workbench 1, and the second welding mechanism includes a second sliding groove 12, a second sliding block 17, a second limiting arc block 18, a third support block 19, a first bevel gear 20, a second bevel gear 21, a connecting rod 22, an electric push rod 23, a mounting block 24, a mounting groove 25, a motor 26, a second bidirectional threaded rod 27, a fixing block 28, a limiting block 29, a limiting block 30, a limiting groove 31 and a third bidirectional threaded rod 32.

[0080] Furthermore, two electric push rods 23 are fixedly connected to the upper surface of the workbench 1;

[0081] Wherein, the mounting block 24 is fixedly connected to the telescopic ends of the two electric push rods 23;

[0082] Among them, a plurality of mounting grooves 25 are provided on the upper surface of the mounting block 24, and the mounting grooves 25 extend out of the lower surface of the mounting block 24;

[0083] A plurality of limiting grooves 31 are formed on the upper surface of the mounting block 24 , and the limiting grooves 31 extend out of the lower surface of the mounting block 24 .

[0084] Further, the motor 26 is fixedly connected to the right side surface of the mounting block 24;

[0085] Wherein, the second bidirectional threaded rod 27 is fixedly connected to the rotating output shaft of the mounting block 24;

[0086] The left end of the second bidirectional threaded rod 27 rotates and passes through the left side surface of the mounting block 24;

[0087] The second bidirectional threaded rod 27 rotates and passes through the plurality of installation slots 25. The second bidirectional threaded rod 27 is provided with a plurality of sets of bidirectional threads. The plurality of sets of bidirectional threads on the second bidirectional threaded rod 27 are located in the plurality of installation slots 25.

[0088] The two fixing blocks 28 are threadedly sleeved on the corresponding second bidirectional threaded rods 27 .

[0089] Furthermore, the two limiting blocks 29 are fixedly connected to the upper surfaces of the corresponding two fixing blocks 28;

[0090] The two limit blocks 30 are fixedly connected to the front side surfaces of the two corresponding limit blocks 29;

[0091] Among them, two first sliding grooves 5 are opened on the upper surface of the rotating block 4, and the first sliding grooves 5 extend out of the lower surface of the rotating block 4;

[0092] The two third bidirectional threaded rods 32 are rotatably connected between the front and rear inner walls of the two first sliding grooves 5 .

[0093] Furthermore, the front end of the third bidirectional threaded rod 32 rotates and penetrates the front side surface of the rotating block 4;

[0094] Among them, the two first worm gears 8 are fixedly connected to the front end of the third bidirectional threaded rod 32;

[0095] Wherein, the first support block 10 is fixedly connected to the lower surface of the workbench 1;

[0096] The first worm 11 is rotatably sleeved on the first support block 10 through a bearing;

[0097] Wherein, the second worm gear 9 is fixedly connected to the lower end of the fixed shaft 2;

[0098] The second worm wheel 9 is meshingly connected with the first worm 11 .

[0099] Furthermore, the four first sliding blocks 6 are threadedly sleeved on the outer surfaces of the two third bidirectional threaded rods 32;

[0100] Among them, the four first limit arc blocks 7 are fixedly connected to the upper surfaces of the four first sliding blocks 6;

[0101] Wherein, the first sliding block 6 is slidably connected with the corresponding first sliding groove 5;

[0102] The two first sliding blocks 6 are located at two opposite threads of the corresponding third bidirectional threaded rod 32;

[0103] The two second supporting blocks 14 are fixedly connected to the front surface of the rotating block 4 .

[0104] Furthermore, the support rod 15 is rotatably sleeved on the two second support blocks 14;

[0105] The two second worm gears 16 are fixedly sleeved on the outer surface of the support rod 15;

[0106] Among them, the two first worm gears 8 are fixedly connected to the front ends of the two third bidirectional threaded rods 32;

[0107] The first limiting arc blocks 7 on the front and rear sides are arranged in a mirror image.

[0108] Furthermore, two second sliding grooves 12 are provided on the upper surface of the workbench 1 , and the second sliding grooves 12 extend out of the lower surface of the workbench 1 ;

[0109] The two first bidirectional threaded rods 13 are rotatably connected between the front and rear inner walls of the two second sliding grooves 12;

[0110] The front ends of the two first bidirectional threaded rods 13 rotate and penetrate the front surface of the workbench 1;

[0111] The two second bevel gears 21 are fixedly connected to the front ends of the two first bidirectional threaded rods 13;

[0112] The two third support blocks 19 are fixedly connected to the front surface of the workbench 1 .

[0113] Furthermore, the connecting rod 22 is rotatably sleeved on the two third support blocks 19;

[0114] The two first bevel gears 20 are fixedly sleeved on the outer surface of the connecting rod 22;

[0115] Wherein, the first bevel gear 20 is meshedly connected with the second bevel gear 21;

[0116] The four second sliding blocks 17 are threadedly sleeved on the outer surfaces of the two first bidirectional threaded rods 13 .

[0117] Furthermore, the second sliding block 17 is slidably connected to the corresponding second sliding groove 12;

[0118] Among them, the four second limiting arc blocks 18 are fixedly connected to the upper surfaces of the four second sliding blocks 17;

[0119] The second limiting arc block 18 and the first limiting arc block 7 are both in arc shape.

[0120] Further, in the initial state, the second limit arc block 18 and the first limit arc block 7 are located on the same straight line, and the pipeline is placed between the second limit arc blocks 18 on the front and rear sides. At this time, the connecting rod 22 is started to rotate, and the connecting rod 22 rotates to synchronously drive the two first bevel gears 20 to rotate, and the connecting rod 22 synchronously drives the second bevel gear 21 to rotate, and then synchronously drives the first bidirectional threaded rod 13 to rotate, and the first bidirectional threaded rod 13 rotates to drive the second limit arc blocks 18 and the second sliding block 17 on the front and rear sides to approach or move away from each other. When the second limit arc blocks 18 on the front and rear sides approach each other, the pipeline is clamped, and then the pipeline is fixed and positioned;

[0121] Secondly, place the pipe between the first limiting arc blocks 7 on the front and rear sides, and then rotate the support rod 15, which drives the two second worm gears 16 to rotate, and the two second worm gears 16 rotate synchronously to drive the two first worm wheels 8 to rotate, and then synchronously drive the third bidirectional threaded rod 32 to rotate, and then synchronously drive the first limiting arc blocks 7 on the front and rear sides to move closer to or away from each other. When the first limiting arc blocks 7 on the front and rear sides move closer to each other, the pipe can be squeezed and clamped, and then the pipe is fixed and positioned;

[0122] Then the first worm 11 is rotated, and the rotation of the first worm 11 synchronously drives the second worm wheel 9 to rotate, and the rotation of the second worm wheel 9 synchronously drives the fixed shaft 2 and the connecting block 3 to rotate, and then synchronously drives the rotating block 4 to rotate, and the rotating block 4 rotates to drive the pipeline fixed on the first limiting arc block 7 to rotate, so that the angle between the pipeline fixed on the second limiting arc block 18 and the pipeline fixed on the first limiting arc block 7 changes, so that the welding equipment of the oil pipeline can weld the two sections of the pipeline at different angles, thereby increasing the practicality and flexibility of the welding equipment of the oil pipeline;

[0123] When the second limiting arc block 18 and the first limiting arc block 7 are in the same straight line, the second limiting arc block 18 and the first limiting arc block 7 can simultaneously clamp and fix a section of the pipeline, and the pipeline with a longer fixed length is more stable, thereby increasing the practicality and stability of the welding equipment for the oil pipeline;

[0124] The pipeline is passed through the limiting groove 31, and then the motor 26 is started. The motor 26 starts to drive the second bidirectional threaded rod 27 to rotate. The rotation of the second bidirectional threaded rod 27 synchronously drives the corresponding two fixing blocks 28 to move closer to or away from each other, and then synchronously drives the corresponding limiting blocks 30 to move closer to or away from each other. When the two limiting blocks 30 are close to each other, the pipeline can be vertically fixed, and then the two pipelines can be welded perpendicular to each other, which makes the vertical welding of the two pipelines faster and more convenient, thereby increasing the practicality of the welding equipment for the oil pipeline.

[0125] A welding method for a welding device of a petroleum pipeline,

[0126] S1: Place the pipe between the second limit arc blocks 18 on the front and rear sides, and then start rotating the connecting rod 22. The connecting rod 22 rotates to synchronously drive the two first bevel gears 20 to rotate, and the connecting rod 22 synchronously drives the second bevel gear 21 to rotate, and then synchronously drives the first bidirectional threaded rod 13 to rotate. The first bidirectional threaded rod 13 rotates to drive the second limit arc blocks 18 and the second sliding block 17 on the front and rear sides to move closer to or away from each other. When the second limit arc blocks 18 on the front and rear sides approach each other, the pipe is clamped, and then the pipe is fixed and positioned.

[0127] S2: Place the pipe between the first limiting arc blocks 7 on the front and rear sides, and then rotate the support rod 15, which drives the two second worm gears 16 to rotate, and the two second worm gears 16 rotate synchronously to drive the two first worm wheels 8 to rotate, and then synchronously drive the third bidirectional threaded rod 32 to rotate, and then synchronously drive the first limiting arc blocks 7 on the front and rear sides to move closer to or away from each other. When the first limiting arc blocks 7 on the front and rear sides move closer to each other, the pipe can be squeezed and clamped, and then the pipe is fixed and positioned;

[0128] S3: Rotate the first worm 11 again, the first worm 11 rotates synchronously to drive the second worm wheel 9 to rotate, the second worm wheel 9 rotates synchronously with the fixed shaft 2 and the connecting block 3 to rotate, and then synchronously drives the rotating block 4 to rotate, the rotating block 4 rotates to drive the pipeline fixed on the first limiting arc block 7 to rotate, so that the angle between the pipeline fixed on the second limiting arc block 18 and the pipeline fixed on the first limiting arc block 7 changes, so that the welding equipment of the oil pipeline can weld the two sections of the pipeline at different angles;

[0129] S4: Finally, the pipeline is passed through the limit groove 31, and then the motor 26 is started. The motor 26 starts to drive the second bidirectional threaded rod 27 to rotate. The rotation of the second bidirectional threaded rod 27 synchronously drives the corresponding two fixed blocks 28 to move closer to or away from each other, and then synchronously drives the corresponding limit blocks 30 to move closer to or away from each other. When the two limit blocks 30 move closer to each other, the pipeline can be fixed vertically.

[0130] Structure Description:

[0131] The second worm gear 9 and the first worm 11: The meshing connection between the second worm gear 9 and the first worm 11 limits the fixed shaft 2 and the rotating block 4 simultaneously, because the meshing of the worm gear and the worm gear is self-locking, so that the second worm gear 9 will not rotate without rotating the first worm 11, thereby ensuring the stability of the rotating block 4, thereby avoiding shaking of the pipeline after being fixed on the first limiting arc block 7, thereby increasing the stability of the welding equipment of the oil pipeline;

[0132] The third support block 19: The third support block 19 supports the connecting rod 22;

[0133] The first bevel gear 20 and the second bevel gear 21: The second bevel gear 21 is meshed with the first bevel gear 20, so that the rotating connecting rod 22 can simultaneously drive the two first bidirectional threaded rods 13 to rotate, thereby making the second limiting arc blocks 18 on the front and rear sides move closer to or away from each other, thereby saving more effort and being more efficient;

[0134] Motor 26: a power device that drives the second bidirectional threaded rod 27 to rotate;

[0135] The second bidirectional threaded rod 27: The second bidirectional threaded rod 27 can rotate synchronously to drive multiple sets of bidirectional threads to rotate, thereby simultaneously fixing multiple pipelines in the vertical direction, which is more efficient and energy-saving, thereby increasing the practicality of the welding equipment for the oil pipeline;

[0136] The second limiting arc block 18 and the second sliding block 17: The second limiting arc block 18 and the second sliding block 17 are both in an arc shape, so that the inner walls of the second limiting arc block 18 and the second sliding block 17 can be more closely fitted with the outer surface of the pipe, thereby ensuring the stability and firmness of the second limiting arc block 18 and the second sliding block 17 in fixing the pipe;

[0137] The first support block 10 is used to position and support the first worm 11. The first support block 10 and the first worm 11 rotate through the bearing, thereby ensuring the stability of the rotation of the first worm 11 and preventing it from moving forward and backward, thereby ensuring the stability of the engagement between the first worm 11 and the second worm wheel 9;

[0138] Fixed shaft 2: supports and positions the rotating block 4 and the connecting block 3, so that the rotating block 4 rotates around the fixed shaft 2;

[0139] Electric push rod 23: The electric push rod 23 is started to drive the mounting block 24 to move up and down, and then the mounting block 24 adjusts the distance between the pipes fixed on the second limiting arc block 18 and the first limiting arc block 7, thereby increasing the practicality and flexibility of the welding equipment of the oil pipeline.

[0140] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A welding device for a petroleum pipeline, comprising a workbench (1), characterized in that: The workbench (1) is provided with a fixed shaft (2) via a bearing rotatable sleeve; Wherein, the upper end of the fixed shaft (2) is fixedly connected with a connecting block (3); Wherein, a rotating block (4) is fixedly connected to an outer surface of a side of the connecting block (3) away from the fixed shaft (2); Wherein, a first welding mechanism is arranged on the rotating block (4), and the first welding mechanism comprises a first sliding groove (5), a first sliding block (6), a first limiting arc block (7), a first worm gear (8), a second worm gear (9), a first supporting block (10), a first worm (11), a first bidirectional threaded rod (13), a second supporting block (14), a supporting rod (15) and a second worm (16); Wherein, a second welding mechanism is arranged on the workbench (1), and the second welding mechanism comprises a second sliding groove (12), a second sliding block (17), a second limiting arc block (18), a third supporting block (19), a first bevel gear (20), a second bevel gear (21), a connecting rod (22), an electric push rod (23), a mounting block (24), a mounting groove (25), a motor (26), a second bidirectional threaded rod (27), a fixing block (28), a limiting block (29), a limiting block (30), a limiting groove (31) and a third bidirectional threaded rod (32).

2. The welding equipment for oil pipeline according to claim 1, characterized in that: The two electric push rods (23) are fixedly connected to the upper surface of the workbench (1); Wherein, the mounting block (24) is fixedly connected to the telescopic ends of the two electric push rods (23); Wherein, a plurality of mounting grooves (25) are provided on the upper surface of the mounting block (24), and the mounting grooves (25) extend out of the lower surface of the mounting block (24); A plurality of limiting grooves (31) are provided on the upper surface of the mounting block (24), and the limiting grooves (31) extend out of the lower surface of the mounting block (24).

3. The welding equipment for oil pipeline according to claim 1, characterized in that: The motor (26) is fixedly connected to the right side surface of the mounting block (24); Wherein, the second bidirectional threaded rod (27) is fixedly connected to the rotating output shaft of the mounting block (24); The left end of the second bidirectional threaded rod (27) rotates to penetrate the left side surface of the mounting block (24); The second bidirectional threaded rod (27) rotates and passes through the multiple installation grooves (25), the second bidirectional threaded rod (27) is provided with multiple groups of bidirectional threads, and the multiple groups of bidirectional threads on the second bidirectional threaded rod (27) are located in the multiple installation grooves (25); The two fixing blocks (28) are threadedly sleeved on the corresponding second bidirectional threaded rods (27).

4. The welding equipment for oil pipeline according to claim 1, characterized in that: The two limiting blocks (29) are fixedly connected to the upper surfaces of the two corresponding fixing blocks (28); Wherein, the two limiting blocks (30) are fixedly connected to the front side surfaces of the two corresponding limiting blocks (29); Wherein, two first sliding grooves (5) are provided on the upper surface of the rotating block (4), and the first sliding grooves (5) extend out of the lower surface of the rotating block (4); The two third bidirectional threaded rods (32) are rotatably connected between the front and rear inner walls of the two first sliding grooves (5).

5. The welding equipment for oil pipeline according to claim 1, characterized in that: The front end of the third bidirectional threaded rod (32) rotates and passes through the front side surface of the rotating block (4); Wherein, the two first worm gears (8) are fixedly connected to the front end of the third bidirectional threaded rod (32); Wherein, the first support block (10) is fixedly connected to the lower surface of the workbench (1); Wherein, the first worm (11) is rotatably sleeved on the first support block (10) via a bearing; Wherein, the second worm gear (9) is fixedly connected to the lower end of the fixed shaft (2); The second worm wheel (9) is meshingly connected with the first worm (11).

6. The welding equipment for oil pipeline according to claim 1, characterized in that: The four first sliding blocks (6) are threadedly sleeved on the outer surfaces of the two third bidirectional threaded rods (32); Wherein, the four first limiting arc blocks (7) are fixedly connected to the upper surfaces of the four first sliding blocks (6); Wherein, the first sliding block (6) is slidably connected to the corresponding first sliding groove (5); The two first sliding blocks (6) are located at two opposite threads of the corresponding third bidirectional threaded rod (32); The two second support blocks (14) are fixedly connected to the front side surface of the rotating block (4).

7. The welding equipment for oil pipeline according to claim 1, characterized in that: The support rod (15) is rotatably sleeved on the two second support blocks (14); Wherein, two second worm gears (16) are fixedly sleeved on the outer surface of the support rod (15); Wherein, the two first worm gears (8) are fixedly connected to the front ends of the two third bidirectional threaded rods (32); The first limiting arc blocks (7) on the front and rear sides are arranged in a mirror image.

8. The welding equipment for oil pipeline according to claim 1, characterized in that: The two second sliding grooves (12) are formed on the upper surface of the workbench (1), and the second sliding grooves (12) extend out of the lower surface of the workbench (1); Wherein, the two first bidirectional threaded rods (13) are rotatably connected between the front and rear inner walls of the two second sliding grooves (12); The front ends of the two first bidirectional threaded rods (13) rotate and penetrate the front surface of the workbench (1); Wherein, the two second bevel gears (21) are fixedly connected to the front ends of the two first bidirectional threaded rods (13); Wherein, two third support blocks (19) are fixedly connected to the front surface of the workbench (1); Wherein, the connecting rod (22) is rotatably sleeved on the two third supporting blocks (19); Wherein, the two first bevel gears (20) are fixedly sleeved on the outer surface of the connecting rod (22); Wherein, the first bevel gear (20) is meshingly connected with the second bevel gear (21); Wherein, four second sliding blocks (17) are threadedly sleeved on the outer surfaces of the two first bidirectional threaded rods (13); Wherein, the second sliding block (17) is slidably connected to the corresponding second sliding groove (12); Wherein, the four second limiting arc blocks (18) are fixedly connected to the upper surfaces of the four second sliding blocks (17); The second limiting arc block (18) and the first limiting arc block (7) are both in the shape of circular arcs.

9. A welding method for a welding device for a petroleum pipeline, characterized in that: S1: The pipeline is placed between the second limiting arc blocks (18) on the front and rear sides, and the connecting rod (22) is started to rotate. The connecting rod (22) rotates to synchronously drive the two first bevel gears (20) to rotate. The connecting rod (22) synchronously drives the second bevel gear (21) to rotate, and then synchronously drives the first bidirectional threaded rod (13) to rotate. The first bidirectional threaded rod (13) rotates to drive the second limiting arc blocks (18) and the second sliding block (17) on the front and rear sides to move closer to or farther away from each other. When the second limiting arc blocks (18) on the front and rear sides move closer to each other, the pipeline is clamped, and then the pipeline is fixed and positioned.

10. The welding method of a petroleum pipeline welding device according to claim 9, characterized in that: S2: placing the pipeline between the first limiting arc blocks (7) on the front and rear sides, and then rotating the support rod (15), the rotating support rod (15) drives the two second worm gears (16) to rotate, the rotation of the two second worm gears (16) synchronously drives the two first worm wheels (8) to rotate, and then synchronously drives the third bidirectional threaded rod (32) to rotate, and then synchronously drives the first limiting arc blocks (7) on the front and rear sides to move closer to each other or away from each other. When the first limiting arc blocks (7) on the front and rear sides move closer to each other, the pipeline can be squeezed and clamped, and then the pipeline is fixed and positioned; S3: The first worm gear (11) is rotated again. The rotation of the first worm gear (11) synchronously drives the second worm gear (9) to rotate. The rotation of the second worm gear (9) synchronously drives the fixed shaft (2) and the connecting block (3) to rotate, thereby synchronously driving the rotating block (4) to rotate. The rotating block (4) drives the pipeline fixed on the first limiting arc block (7) to rotate, thereby causing the angle between the pipeline fixed on the second limiting arc block (18) and the pipeline fixed on the first limiting arc block (7) to change, thereby enabling the welding equipment of the oil pipeline to weld the two sections of the pipeline at different angles. S4: Finally, the pipeline is passed through the limiting groove (31), and then the motor (26) is started. The motor (26) starts to drive the second bidirectional threaded rod (27) to rotate. The rotation of the second bidirectional threaded rod (27) synchronously drives the corresponding two fixed blocks (28) to move closer to or away from each other, and then synchronously drives the corresponding limiting blocks (30) to move closer to or away from each other. When the two limiting blocks (30) move closer to each other, the pipeline can be fixed vertically.

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