Welding system of hydraulic and hydroelectric pressure steel pipe based on centering and calibration structure

Abstract

The present invention relates to the technical field of pressure steel pipe processing, and discloses a water conservancy and hydroelectric pressure steel pipe welding system based on a centering and calibration structure, comprising a placement part, the placement part comprising a slide rail base, the upper surface of the slide rail base is slidably connected to a movable plate, the outer surface of the movable plate is fixedly connected to a conical block, two conical blocks are provided and are distributed front and back with the slide rail base as the center, and the conical block adopts a hollow structure design. The water conservancy and hydroelectric pressure steel pipe welding system based on the centering and calibration structure can effectively solve the problem that in the prior art, when welding steel pipes, workers usually need to rely on experience and naked eye observation to manually center and position the steel pipes. Since the steel pipes are heavy and difficult to move, manual centering and positioning are limited by factors such as technical level and visual fatigue, and the centering accuracy is often low. Excessive centering errors will lead to reduced welding quality and even welding defects, reduced sealing, and affect engineering safety.

Description

Technical Field

[0001] The invention relates to the technical field of pressure steel pipe processing, and in particular to a water conservancy and hydroelectric pressure steel pipe welding system based on a centering and calibration structure. Background Art

[0002] The hydraulic and hydroelectric pressure steel pipe is an important water conveyance component in hydraulic and hydroelectric projects. It is a steel pipe structure that can withstand high internal water pressure. It is generally made of rolled and welded steel plates, and its shape is mainly circular. The main function of the pressure steel pipe is to convey water with a certain pressure. It needs to have good sealing to prevent water leakage. At the same time, it must have sufficient strength and rigidity to withstand various load combinations such as internal water pressure, external soil pressure, self-weight and water flow impact. In cross-regional water diversion projects, the pressure steel pipe can ensure the stability and efficiency of water during long-distance transportation.

[0003] In traditional steel pipe welding operations, workers usually need to rely on experience and visual observation to manually center the steel pipe. Since steel pipes are heavy and difficult to move, manual centering is limited by factors such as technical level and visual fatigue. The centering accuracy is often low. Excessive centering error will lead to a decline in welding quality and even cause welding defects, reduced sealing, and affect project safety. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a water conservancy and hydropower pressure steel pipe welding system based on a centering and calibration structure, which can effectively solve the problem that during the prior art welding operation of steel pipes, workers usually need to rely on experience and naked eye observation to manually center and position the steel pipes. Since the steel pipes are heavy and difficult to move, manual centering and positioning are limited by factors such as technical level and visual fatigue. The centering accuracy is often low. Excessive centering errors will lead to a decline in welding quality and even cause welding defects, reduced sealing, and affect engineering safety.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a hydraulic and hydroelectric pressure steel pipe welding system based on a centering and calibration structure, comprising:

[0007] The placement part includes a slide rail base, the slide rail base is slidably connected to a conical block through a moving plate arranged on its upper surface, two conical blocks are arranged and distributed front and back with the slide rail base as the center, and the conical block adopts a hollow structure design, the outer surface of the slide rail base is provided with a lifting platform fitted therewith, and the lifting platform is slidably connected to a support member for placing an external steel pipe through a slide groove provided on its upper surface;

[0008] A welding part, the welding part comprises a welding head body which can be used for welding an external steel pipe, and an adjusting piece which can be used for adjusting the position of the welding head body is provided on the outer surface of the welding head body;

[0009] Among them, the support member includes connecting rods, and the connecting rods are provided with several groups, each group of the connecting rods is provided with two connecting rods, and the two connecting rods are cross-distributed, and the near ends of adjacent connecting rods are rotatably connected by a support frame, the bottom end of the support frame is slidably connected to the inside of the slide groove, and the outer surface of the support frame is sleeved with rollers, and two rollers are provided and symmetrically distributed with the slide rail base as the center, a connecting rod close to one side of the movable plate is rotatably connected with a buckle, and the movable plate is slidably connected to the outer surface of the buckle through a guide groove opened inside it.

[0010] Furthermore, the welding part also includes a driving unit, which is arranged on the outer surface of the slide rail base, and the driving unit is rotatably connected to an output shaft on the side close to the movable plate, and the output shaft penetrates the conical block and is fixedly connected to a rotating disk, and the circumferential outer surface of the rotating disk is rotatably connected to a rotating ring, and one side of the rotating ring is slidably connected to a reciprocating rod through a connecting seat, and one end of the reciprocating rod away from the axis of the rotating disk is fixedly connected to the outer surface of the welding head body, and a linkage is provided at one end of the rotating disk away from the output shaft.

[0011] Furthermore, the adjusting member includes an arc bar block, and one end of the rotating disk close to the output shaft is fixedly connected to the outer surface of the arc bar block. Four arc bar blocks are arranged and distributed in a circular array with the rotating disk as the axis, and a groove is opened inside the reciprocating rod to fit the outer surface of the arc bar block.

[0012] Furthermore, the interior of the reciprocating rod is rotatably connected to a rotating plate via a shaft, and the circumferential outer surface of the shaft is sleeved with a torsion spring connected to the interior of the rotating plate, and the rotating plate is rotatably connected to a roller on one side close to the welding head body.

[0013] Furthermore, the outer surface of the roller is sleeved with a rubber block that can fit with the inner wall of the external steel pipe, and the roller is provided with two rubber blocks that are symmetrically distributed with the reciprocating rod as the center.

[0014] Furthermore, the linkage member comprises a ratchet ring, which is fixedly connected to one end of the rotating disk away from the output shaft, and a ratchet rod meshing with the ratchet ring is fixedly connected to one side of the rotating plate close to the rotating disk.

[0015] Furthermore, a reinforcing rib plate connected to the outer surface of the rotating plate is fixedly connected to one side of the ratchet rod.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] The present invention is provided with a lifting platform, a support and a conical block. When the steel pipe is butt-welded, the height of the lifting platform can be adjusted according to the diameter of the steel pipe to be processed. The support connected to the lifting platform through the slide groove is lifted and lowered so that the axis of the steel pipe to be processed, the axis of the conical block and the axis of the moving path of the welding head body are the same. The welding head body can be accurately welded around the circumference of the steel pipe, so that the weld width is uniform and the weld edge is neat, effectively avoiding the situation of weld deviation. The steel pipe is placed above the roller, the friction force is small, and it can be easily pushed. The conical blocks on both sides are synchronously close to the inner steel pipe to complete the centering of the two steel pipes. At the same time, the outer side of the conical block is thin, and the side close to the moving plate is thicker. During the centering process, the correction action of the steel pipe can also be synchronously completed, and the axis of the two steel pipes is more accurately guaranteed to be in the same position. By improving the degree of automation of the equipment, it is beneficial to improve the centering accuracy of the two steel pipes, avoid the loss caused by improper operation during manual welding, and improve the stability and reliability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a placement part according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a support member and a lifting platform according to an embodiment of the present invention;

[0022] Figure 4 For the embodiment of the present invention Figure 1 A schematic diagram of the structure with a partial enlargement at the center;

[0023] Figure 5 This is a schematic diagram of the structure of the support frame and the roller according to an embodiment of the present invention;

[0024] Figure 6 is a schematic cross-sectional structure diagram of an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the slide rail base, the driving unit, the output shaft and the rotating disk according to an embodiment of the present invention;

[0026] Figure 8 is a schematic cross-sectional structure diagram of an output shaft according to an embodiment of the present invention;

[0027] Fig. 9 For the embodiment of the present invention Figure 6 A schematic diagram of the structure with a partial enlargement at B in the middle;

[0028] Fig.10 This is a schematic structural diagram of a rotating disk and a rotating ring according to an embodiment of the present invention;

[0029] Fig.11 It is a schematic diagram of the separation structure of the adjusting member, the reciprocating rod and the rotating plate according to an embodiment of the present invention;

[0030] Fig.12 It is a schematic structural diagram of a ratchet ring, a ratchet rod and a rotating disk according to an embodiment of the present invention.

[0031] The numbers in the figure represent respectively: 1. placement part; 11. slide rail base; 12. moving plate; 121. guide groove; 13. conical block; 14. lifting platform; 15. support member; 151. connecting rod; 152. support frame; 153. roller; 154. buckle; 2. welding part; 21. welding head body; 22. driving unit; 23. output shaft; 24. rotating disk; 25. rotating ring; 26. reciprocating rod; 27. adjusting member; 271. arc strip block; 272. groove; 28. rotating plate; 281. torsion spring; 282. roller; 2821. rubber block; 29. ​​linkage member; 291. ratchet ring; 292. ratchet rod; 2921. reinforcing rib plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention will be further described below in conjunction with the embodiments.

[0034] Example:

[0035] See also Figure 1-Figure 12 The present invention provides a technical solution: a hydraulic and hydroelectric pressure steel pipe welding system based on a centering and calibration structure, comprising:

[0036] The placement part 1 includes a slide rail base 11, and the slide rail base 11 is slidably connected to a conical block 13 through a moving plate 12 arranged on the upper surface thereof. Two conical blocks 13 are provided and are distributed front and back with the slide rail base 11 as the center, and the conical block 13 adopts a hollow structure design. The outer surface of the slide rail base 11 is provided with a lifting platform 14 fitted therewith, and the lifting platform 14 is slidably connected to a support member 15 for placing an external steel pipe through a slide groove provided on the upper surface thereof;

[0037] The welding part 2 includes a welding head body 21 for welding an external steel pipe, and an adjusting member 27 for adjusting the position of the welding head body 21 is disposed on the outer surface of the welding head body 21;

[0038] Among them, the support member 15 includes a connecting rod 151, and the connecting rod 151 is provided with several groups. Each group of connecting rods 151 is provided with two, and the two connecting rods 151 are cross-distributed. The proximal ends of adjacent connecting rods 151 are rotatably connected by a support frame 152. The bottom end of the support frame 152 is slidably connected to the inside of the slide groove, and the outer surface of the support frame 152 is sleeved with a roller 153. Two rollers 153 are provided and are symmetrically distributed with the slide rail base 11 as the center. A connecting rod 151 close to one side of the movable plate 12 is rotatably connected with a buckle 154, and the movable plate 12 is slidably connected to the outer surface of the buckle 154 through a guide groove 121 opened therein.

[0039] The welding part 2 also includes a driving unit 22, which is arranged on the outer surface of the slide rail base 11. The driving unit 22 is rotatably connected to an output shaft 23 on the side close to the movable plate 12. The output shaft 23 penetrates the conical block 13 and is fixedly connected to a rotating disk 24. The circumferential outer surface of the rotating disk 24 is rotatably connected to a rotating ring 25. One side of the rotating ring 25 is slidably connected to a reciprocating rod 26 through a connecting seat. The end of the reciprocating rod 26 away from the axis of the rotating disk 24 is fixedly connected to the outer surface of the welding head body 21, and a linkage part 29 is provided at the end of the rotating disk 24 away from the output shaft 23.

[0040] The adjusting member 27 includes an arc block 271. One end of the rotating disk 24 close to the output shaft 23 is fixedly connected to the outer surface of the arc block 271. Four arc blocks 271 are arranged and distributed in a circular array with the rotating disk 24 as the axis. A groove 272 that fits the outer surface of the arc block 271 is opened inside the reciprocating rod 26. The outer end of the arc block 271 is fixedly connected to a limiting plate.

[0041] The interior of the reciprocating rod 26 is rotatably connected to a rotating plate 28 via an axial rod, and the circumferential outer surface of the axial rod is sleeved with a torsion spring 281 connected to the interior of the rotating plate 28. The rotating plate 28 is rotatably connected to a roller 282 on one side close to the welding head body 21. In the initial state, the rotating plate 28 is tilted due to the influence of the torsion spring 281.

[0042] The outer surface of the roller 282 is sleeved with a rubber block 2821 that can fit the inner wall of the outer steel pipe. Two rollers 282 are provided and are symmetrically distributed with the reciprocating rod 26 as the center.

[0043] The linkage member 29 includes a ratchet ring 291 , which is fixedly connected to one end of the rotating disk 24 away from the output shaft 23 . A ratchet rod 292 meshing with the ratchet ring 291 is fixedly connected to one side of the rotating plate 28 close to the rotating disk 24 .

[0044] A reinforcing rib plate 2921 connected to the outer surface of the rotating plate 28 is fixedly connected to one side of the ratchet rod 292 .

[0045] The process of loading the external steel pipe:

[0046] In practical applications, the height of the lifting platform 14 is adjusted according to the diameter of the pressure steel pipe to be welded, and the support 15 is set in the slide groove on the upper surface of the lifting platform 14. The lifting and lowering of the lifting platform 14 will drive the support 15 to move up and down together, so that the axis of the steel pipe is the same as the axis of the conical block 13. The buckle 154 is connected to the moving plate 12 by sliding up and down. After lifting and lowering, the buckle 154 is still connected to the moving plate 12 and is extended and retracted by the moving position of the moving plate 12. In the initial state, both moving plates 12 are at the edge of the slide rail base 11, and the distance between the two moving plates 12 is in the maximum state. The distance between the side of the slide rail base 11 close to the driving unit 22 and the welding head body 21 is smaller than the distance between the other side of the slide rail base 11 and the welding head body 21. The external steel pipe is loaded to the position above the support 15 and first placed between the welding head body 21 and the moving plate 12 away from the driving unit 22.

[0047] Two pressure steel pipes are placed on the upper surface of the roller 153 tilted in the support 15 by external lifting equipment. There are two rollers 153 on the same support frame 152, and the adjacent side of the two rollers 153 is lower, so that the steel pipes can be placed stably. Since the roller 153 is sleeved on the outer surface of the support frame 152 and is rotatably connected to the support frame 152, after the external steel pipe is placed on the support 15, the contact area between the outer surface of the steel pipe and the tilted roller 153 is small, which is point contact, and the friction force is small, so the upper steel pipe can be easily moved axially.

[0048] After placement is completed, the slide rail base 11 is started to move the movable plates 12 on both sides closer to the middle position, the movable plate 12 close to the driving unit 22 moves a smaller distance, and the movable plate 12 away from the driving unit 22 moves a larger distance, until the position of the pipe seam of the two steel pipes is in the same plane as the position of the welding head body 21, and stops. In the initial state, a retractable movable baffle is provided on the outside of the welding head body 21, which can reserve the welding seam for the two steel pipes to be welded.

[0049] A conical block 13 is fixedly connected to one side of one of the moving plates 12 near the other moving plate 12. The conical block 13 and the moving plate 12 are both hollow structured, and the side of the conical block 13 near the steel pipe is narrower. During the movement of the moving plate 12, the conical block 13 will follow the moving plate 12 to approach the steel pipe, and the narrower end of the conical block 13 will first enter the interior of the steel pipe. As the moving distance increases, the radius of the conical block 13 entering the interior of the steel pipe gradually increases until the outer surface of the conical block 13 is matched with the edge line of the outer end of the inner wall of the steel pipe, and the correction action of the steel pipe position is completed, thus completing the placement and correction action of the steel pipe.

[0050] During this process, when the movable plates 12 on both sides drive the conical blocks 13 to move toward the middle, the movement of the movable plates 12 will move the buckles 154 synchronously, driving the connecting rods 151 close to the movable plates 12 at both ends to move synchronously toward the middle, and the internal supports 15 of the two movable plates 12 are evenly squeezed, and the angle between the connecting rods 151 in one group and the connecting rods 151 in the adjacent group becomes smaller, and the gap between each group of rollers 153 is also reduced accordingly.

[0051] There are four welding head bodies 21, which are distributed in a circular array with the rotating disk 24 as the axis. The axis of the space surrounded by the four welding head bodies 21 is the same as the axis of the output shaft 23 and the conical block 13. The axis of the steel pipe after centering and correction is consistent with the axis in the space surrounded by the welding head bodies 21, which helps to improve the welding accuracy and ensure the quality of welding.

[0052] The process of welding steel pipes:

[0053] In the initial state, the groove 272 inside the reciprocating rod 26 fits with the outer surface of the arc strip block 271 near the output shaft 23, the reciprocating rod 26 is in a contracted state, and the distance between the reciprocating rod 26 and the output shaft 23 is small. Under the action of the torsion spring 281, the rotating plate 28 and the reciprocating rod 26 are in an inclined state, the rotating plate 28 is lower on the side near the output shaft 23, and higher on the side near the ratchet ring 291, and the roller 282, ratchet rod 292 and reinforcing rib plate 2921 arranged on the rotating plate 28 are in an inclined state together. In the inclined state, the highest point of the roller 282 is higher than the welding head body 21. When each arc strip block 271 is viewed clockwise from one end to the other end, the length between the arc strip block 271 and the rotating ring 25 gradually increases.

[0054] After the two pressure steel pipes are aligned, the drive unit 22 is started to drive the output shaft 23 to rotate. The end of the output shaft 23 away from the drive unit 22 is fixedly connected to the rotating disk 24. The rotating disk 24 rotates clockwise as the drive unit 22 is started. The arc block 271 is fixedly connected to the rotating disk 24 and rotates with it, while the reciprocating rod 26 is slidably connected through a connecting seat fixed on the outer surface of the rotating ring 25. The friction force at the place where the circumferential inner wall of the rotating ring 25 meets the rotating disk 24 is small, and the inner wall is smooth. Due to its heavy weight, the rotating ring 25 is in a relatively static state compared to the rotating disk 24.

[0055] When the arc block 271 rotates clockwise, in the same position, the distance between the arc block 271 and the rotating ring 25 gradually decreases, and the arc block 271 moves the reciprocating rod 26 to the side away from the output shaft 23 through the groove 272 provided inside the arc block 271. The rotating plate 28 and the roller 282 in the inclined state follow the reciprocating rod 26 to perform axial outward expansion movement. As the clockwise rotation angle increases, the distance moved by the reciprocating rod 26 increases until the top of the roller 282 contacts the circumferential inner wall of the steel pipe. As the reciprocating rod 26 is continuously lifted, since the reciprocating rod 26 is in the middle position of the rotating plate 28, the roller 282 and the rotating plate 28 are squeezed, and the rubber block 2821 on the outer surface of the roller 282 fits the inner wall of the steel pipe. At this time, the rotating plate 28 is in a vertical state with the reciprocating rod 26 and remains stable. When the rubber block 2821 is fitted with the inner wall of the steel pipe, it is slightly deformed due to the squeezing of the reciprocating rod 26. At this time, the tip of the welding head body 21 is fitted with the inner wall of the steel pipe.

[0056] A ratchet rod 292 is fixedly connected to the lower surface of the rotating plate 28. The ratchet rod 292 is vertically distributed with the rotating plate 28. When the rotating plate 28 rotates to be perpendicular to the reciprocating rod 26, the ratchet rod 292 is parallel to the reciprocating rod 26, that is, the ratchet rod 292 is parallel to the rotating disk 24. After the ratchet rod 292 rotates with the rotating plate 28, its outer surface meshes with the teeth in the ratchet ring 291. As the rotating disk 24 continues to rotate clockwise, the ratchet rod 292 is engaged with the teeth in the ratchet ring 291, and the ratchet ring 291 is fixedly connected with the rotating disk 24. The ratchet ring 291 drives the rotating ring 25 to rotate synchronously with the rotating disk 24 through the ratchet rod 292.

[0057] At this time, the output shaft 23, the rotating disk 24 and the rotating ring 25 form a whole, and the welding head body 21 starts to start, and the welds of the two steel pipes are welded. Under the action of the driving unit 22, the output shaft 23, the rotating disk 24 and the rotating ring 25 start to rotate synchronously, and four welding head bodies 21 are arranged in an array with the rotating disk 24 as the center. After slowly rotating 90 degrees, the driving unit 22 stops, and the position of one welding head body 21 moves to the position of the next welding head body 21, and the inner wall welding of the steel pipe in the entire circumferential direction can be completed.

[0058] The process of cutting steel pipe:

[0059] After welding is completed, the driving unit 22 drives the output shaft 23 to rotate in the opposite direction, and the rotating disk 24 rotates counterclockwise under the action of the output shaft 23. At this time, the inclined surface of the teeth in the ratchet ring 291 fits the inclined surface of the ratchet rod 292. During the counterclockwise rotation of the ratchet ring 291, the ratchet rod 292 swings slightly outward and meshes with the teeth in the next ratchet ring 291. The rotating ring 25 does not rotate synchronously with the rotating disk 24, and the rotating disk 24 is in a relatively static state. The arc block 271 on the other side of the rotating disk 24 rotates counterclockwise synchronously, and the reciprocating rod 26 shrinks to the side close to the output shaft 23 inside the connecting seat under the action of the arc block 271.

[0060] As the reciprocating rod 26 gradually contracts, the rubber block 2821 recovers its elastic potential energy, the roller 282 no longer fits against the inner wall of the steel pipe, and the welding head body 21 no longer fits against the inner wall of the steel pipe, gradually recovering its initial tilted state. At this time, the ratchet rod 292 also separates from the outer surface of the ratchet ring 291, and under the action of the torsion spring 281, it rotates around the reciprocating rod 26 with the rotating plate 28 until the reciprocating rod 26 is in a contracted state and the distance between the reciprocating rod 26 and the output shaft 23 is at a minimum state. The rotating plate 28, the roller 282 and the ratchet rod 292 all return to their original state.

[0061] Start the slide rail base 11, so that the movable plates 12 and conical blocks 13 on both sides move synchronously to both sides until they stop at the edge and return to the initial state. The welded steel pipe is easily moved on the upper surface of the roller 153 to the side away from the driving unit 22 through external force, and the rotating disk 24 is disengaged from the inside, and the welded steel pipe is removed again by the lifting equipment.

[0062] In summary, there are the following advantages in the process of welding steel pipes:

[0063] Advantage 1: The height of the lifting platform 14 and the support 15 can be adjusted according to the diameter of the steel pipe to be processed, so that the axis of the steel pipe to be processed, the axis of the conical block 13 and the axis of the moving path of the welding head body 21 are the same, and the welding head body 21 can accurately weld around the circumference of the steel pipe, so that the weld width is uniform and the weld edge is neat, effectively avoiding the situation of weld deviation.

[0064] Advantage 2: The conical blocks 13 on both sides are synchronously approached to the inner steel pipe to complete the centering of the two steel pipes. At the same time, the outer side of the conical block 13 is thin, and the side close to the movable plate 12 is thicker. During the centering process, the correction action of the steel pipe can also be completed synchronously, which more accurately ensures that the axes of the two steel pipes are in the same position.

[0065] Advantage three: four welding head bodies 21 are arranged in a circular array with the rotating disk 24 as the axis. During the welding process, the four welding head bodies 21 are synchronously slid inside the steel pipe and fit the inner wall of the steel pipe through the rotating ring 25. The synchronous welding of the four welding head bodies 21 makes the heat more uniform, which can make the heating degree of each part of the inner wall of the steel pipe tend to be consistent, thereby effectively reducing thermal deformation; at the same time, since the welding areas are distributed at different positions of the inner wall of the steel pipe, the welding stress can be dispersed in a larger range, reducing the degree of stress concentration, thereby improving the overall performance of the steel pipe and increasing the welding speed.

[0066] Advantage 4: The inner wall of the steel pipe can be positioned by rotating the output shaft 23 to determine the position that the welding head body 21 needs to reach. After the determination is completed, the rotating ring 25 and the rotating disk 24 can be formed into a whole through the cooperation of the linkage 29, driving the welding head body 21 to rotate and weld around the inner wall of the steel pipe; after welding is completed, the output shaft 23 is rotated in the opposite direction, the rotating ring 25 is separated from the rotating disk 24, and the reciprocating rod 26, the rotating plate 28 and the roller 282 are reset.

[0067] Advantage 5: By rotating the output shaft 23, the lifting action of the reciprocating rod 26 drives the welding head body 21 to contact the inner wall of the steel pipe. After contact, it will no longer continue to lift, driving the welding head body 21 to rotate in a circle. It can adapt to the welding of pressure steel pipes of different diameters within a certain range, improves versatility and economy, and can be flexibly arranged for use according to the actual needs of production tasks, thereby improving the overall utilization rate of the equipment.

[0068] Advantage 6: The driving unit 22 welds the welding head body 21 around the inner wall of the steel pipe through the output shaft 23, automates production, reduces labor costs, avoids losses caused by improper operation during manual welding, improves the stability and reliability of product quality, and at the same time, can meet the needs of welding the inner wall of small-diameter steel pipes.

[0069] Advantage 7: The welding head body 21 is at the top of the reciprocating rod 26. During the welding process, the rotating plate 28 and the roller 282 are perpendicular to the reciprocating rod 26. The outer circumferential surface of the roller 282 fits the inner wall of the steel pipe and is located at the connection between the two steel pipes. During welding, the welding head body 21 rotates around the inner wall of the steel pipe, and can make secondary corrections between the two steel pipes during the welding process, monitor the deformation trend of the steel pipe in real time and make reverse adjustments to offset part of the welding stress. By timely correcting the slight deformation of the steel pipe, the accumulation and amplification of the deformation is avoided, so that the steel pipe can maintain good straightness and roundness after welding, reducing the workload of the subsequent correction process and improving production efficiency.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic and hydroelectric pressure steel pipe welding system based on a centering and calibration structure, characterized in that: include: A placement part (1), the placement part (1) comprising a slide rail base (11), the slide rail base (11) being slidably connected to a conical block (13) via a movable plate (12) arranged on its upper surface, two conical blocks (13) being arranged and distributed front and back with the slide rail base (11) as the center, and the conical blocks (13) being designed with a hollow structure, the outer surface of the slide rail base (11) being provided with a lifting platform (14) fitted therewith, the lifting platform (14) being slidably connected to a support member (15) for placing an external steel pipe via a sliding groove provided on its upper surface; A welding part (2), the welding part (2) comprising a welding head body (21) that can be used to weld an external steel pipe, and an adjusting member (27) that can be used to adjust its position is provided on the outer surface of the welding head body (21); The support member (15) comprises a connecting rod (151), wherein the connecting rod (151) is provided with a plurality of groups, each group of the connecting rods (151) is provided with two connecting rods (151), and the two connecting rods (151) are cross-distributed, and the proximal ends of adjacent connecting rods (151) are rotatably connected via a support frame (152), the bottom end of the support frame (152) is slidably connected to the inside of the slide groove, and the outer surface of the support frame (152) is sleeved with a roller (153), and the roller (153) is provided with two and is symmetrically distributed with the slide rail base (11) as the center, and a connecting rod (151) close to one side of the movable plate (12) is rotatably connected with a buckle (154), and the movable plate (12) is slidably connected to the outer surface of the buckle (154) through a guide groove (121) provided therein; The welding part (2) further comprises a driving unit (22), wherein the driving unit (22) is arranged on the outer surface of the slide rail base (11), and the driving unit (22) is rotatably connected to an output shaft (23) on a side close to the movable plate (12), wherein the output shaft (23) penetrates the conical block (13) and is fixedly connected to a rotating disk (24), wherein the circumferential outer surface of the rotating disk (24) is rotatably connected to a rotating ring (25), and one side of the rotating ring (25) is slidably connected to a reciprocating rod (26) through a connecting seat, wherein one end of the reciprocating rod (26) away from the axis of the rotating disk (24) is fixedly connected to the outer surface of the welding head body (21), and one end of the rotating disk (24) away from the output shaft (23) is provided with a linkage member (29), and the interior of the reciprocating rod (26) is rotatably connected to a rotating plate (28) through a shaft, and the circumferential outer surface of the shaft is sleeved with a member that is engaged with the rotating plate A torsion spring (281) is connected inside the movable plate (28); a roller (282) is rotatably connected to a side of the rotating plate (28) close to the welding head body (21); the linkage member (29) includes a ratchet ring (291); the ratchet ring (291) is fixedly connected to an end of the rotating disk (24) away from the output shaft (23); a ratchet rod (292) meshing with the ratchet ring (291) is fixedly connected to a side of the rotating plate (28) close to the rotating disk (24); the adjusting member (27) includes an arc strip block (271); an end of the rotating disk (24) close to the output shaft (23) is fixedly connected to an outer surface of the arc strip block (271); four arc strip blocks (271) are arranged and distributed in a circular array with the rotating disk (24) as the axis; a groove (272) is provided inside the reciprocating rod (26) and fits with the outer surface of the arc strip block (271).

2. According to claim 1, a hydraulic and hydroelectric pressure steel pipe welding system based on a centering and calibration structure is characterized in that: The outer surface of the roller (282) is sleeved with a rubber block (2821) that can fit the inner wall of the outer steel pipe. The roller (282) is provided with two rubber blocks that are symmetrically distributed with the reciprocating rod (26) as the center.

3. According to claim 1, a hydraulic and hydroelectric pressure steel pipe welding system based on a centering and calibration structure is characterized in that: One side of the ratchet rod (292) is fixedly connected to a reinforcing rib plate (2921) connected to the outer surface of the rotating plate (28).

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