Automatic welding equipment capable of adapting to different pipe diameters of large pipelines of power station

Abstract

The invention discloses automatic welding equipment capable of adapting to different pipe diameters of large pipes of a power station, and particularly relates to the technical field of pipe welding. The automatic welding equipment comprises a device base, an operation table is fixedly arranged at the top of the device base, a welding mechanism is slidably arranged at the top of the operation table, and transportation bases are fixedly arranged on the two sides of the top of the device base; by arranging the welding mechanism, the rotating mechanism and the clamping mechanism, during use, the power station pipelines penetrate through the shells through the two conveying mechanisms to be placed at proper positions, the power station pipelines are clamped through the clamping mechanism in the shells, and then the two shells are controlled to move relatively so that the end faces of the two power station pipelines can be tightly attached; and then the welding mechanism is controlled to move to a proper position, welding is started, meanwhile, the shell is controlled through the rotating mechanism to drive the power station pipeline to synchronously rotate, automatic welding of the pipeline is completed, welding is more convenient and faster, and the welding effect is better by mechanically controlling the welding position and angle.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, and more particularly to an automatic welding device capable of adapting to different diameters of large pipelines in power stations. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for conveying gas, liquid or fluid with solid particles. Usually, the fluid flows from the high pressure part of the pipeline to the low pressure part after being pressurized by blowers, compressors, pumps and boilers. It can also be conveyed by the fluid's own pressure or gravity. Pipelines are widely used, mainly in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. In today's large power stations, metal pipes are often used to protect the lines and conveying pipes. The commonly used pipelines are sealed long pipelines made by welding multiple short pipes.

[0003] After searching, the existing patent (invention number: CN107511635B) invented a pipeline welding device, including a first sliding mechanism and a second sliding mechanism, the first sliding mechanism includes a first workbench, the bottom of the first workbench is provided with a first screw slider and a second screw slider, the top of the first workbench is also provided with a first positioning mechanism, the second sliding mechanism includes a second workbench, the bottom of the second workbench is provided with a third screw slider and a fourth screw slider, the top of the second workbench is also provided with a second positioning mechanism, a support platform is provided between the first positioning mechanism and the second positioning mechanism, and the top of the support platform is provided with a welding mechanism in a horizontal state. The present invention drives the first sliding mechanism and the second sliding mechanism synchronously, so that the first workbench and the second workbench move relative to each other, thereby causing the pipeline to move relative to each other, and the welding mechanism on the support platform completes the welding process for it, and its automation degree is high, the welding strength is high, and the weld is uniform, thereby improving the welding efficiency.

[0004] Nowadays, power station pipeline welding is mostly done manually. Because of the pursuit of extremely high sealing performance, the technical requirements for welders are particularly high, and welding is particularly cumbersome. Commonly used automatic welding equipment is difficult to weld large-diameter and heavy-weight pipes commonly used in power stations. Therefore, in order to solve the above problems, an automatic welding equipment that can adapt to different diameters of large pipelines in power stations is very necessary. Summary of the invention

[0005] The main technical problem solved by the present invention is to provide an automatic welding device that can adapt to different diameters of large pipelines in power stations, and can solve the problems raised by the above-mentioned background technology.

[0006] To solve the above technical problems, according to one aspect of the present invention, more specifically, an automatic welding device that can adapt to different diameters of large pipelines in power stations, including a device base, six self-locking universal wheels are fixedly arranged at the bottom of the device base, an operating table is fixedly arranged on the top of the device base, a welding mechanism is slidably arranged on the top of the operating table, transport bases are fixedly arranged on both sides of the top of the device base, and transport mechanisms are telescopically arranged on the tops of the two transport bases, a clamping base is slidably arranged on the top of the device base between the two transport bases and the operating table, a shell is rotatably arranged on the top of the two clamping bases, a first support column is fixedly arranged on one side of the device base, a rotating mechanism is rotatably arranged on the top of the first support column, the rotating mechanisms are meshed and transmitted with the two shells, a clamping mechanism is fixedly arranged inside the two shells, and the two shells are fixedly clamped to the power station pipeline by the clamping mechanism.

[0007] Furthermore, the clamping mechanism includes a clamping motor fixedly arranged inside the outer shell, and rotating disks are meshingly connected on both sides of the output end of the clamping motor, and the two rotating disks are rotatably arranged inside the outer shell, and four guide rods are slidably arranged on one side of the two rotating disks, and multiple guide rods are slidably arranged inside the outer shell, and multiple guide rods have clamping blocks fixedly arranged on one end, and multiple clamping blocks are all in arc shape and the arc axes are consistent with the outer shell axis.

[0008] Furthermore, the four rotating disks are fixedly provided with latch teeth on the side facing the two clamping motors, the output ends of the two clamping motors are fixedly provided with gear shafts, the two gear shafts are respectively engaged with the two latch teeth, the four rotating disks are provided with sliding grooves at the connection with the guide rods, the sliding grooves inside the same outer shell are inclined in opposite directions and have consistent inclination angles, sliding shafts are slidably provided on the inner sides of the multiple sliding grooves, and the multiple sliding shafts are rotatably connected to the guide rods.

[0009] Furthermore, a first sliding seat is fixedly provided on the top of the operating table, a second sliding seat is slidably provided on the top of the first sliding seat, the welding mechanism includes a welding base slidably provided on the top of the second sliding seat, a rotating seat is rotatably provided on the top of the welding base, a fixed block is rotatably provided on the inner side of the rotating seat, a telescopic rod is fixedly provided on one side of the top of the fixed block, a clamp is fixedly provided on one end of the telescopic rod, and an electric welding head is fixedly provided inside the clamp.

[0010] Furthermore, the transport mechanism includes a plurality of second support rods telescopically arranged on the top of the transport base, a second round roller is rotatably arranged between two opposite ones of the plurality of second support rods, the outer sides of the plurality of second round rollers are in contact with the power station pipeline, a second spring is fixedly arranged at the bottom of the plurality of second support rods, and the plurality of second springs are telescopically arranged inside the transport base.

[0011] Furthermore, connecting plates are fixedly provided between the plurality of second support rods arranged side by side, guide plates are fixedly provided on the tops of the four connecting plates, and one side of the four guide plates is respectively inclined toward the two outer shells.

[0012] Furthermore, one side of the bottom of the two clamping bases is threadedly connected to a driving rod, one end of the two driving rods is fixedly connected to a driving motor, the two driving motors are fixedly set inside the device base, and the other side of the bottom of the two clamping bases is slidably connected to a sliding rod, and the sliding rod is fixedly set inside the device base.

[0013] Furthermore, second support columns are fixedly provided on both sides of the outer shell at the top of the two clamping bases, four second support columns are rotatably provided on both sides of the outer shell, two first support rods are telescopically provided on one side of the top of the two clamping bases, first round rollers are rotatably provided between the first support rods of the same clamping base, two first round rollers are tightly fitted with two power station pipelines respectively, first springs are fixedly provided at the bottom of the four first support rods, and four first springs are telescopically provided inside the two clamping bases respectively.

[0014] Furthermore, the rotating mechanism includes a rotating motor fixedly arranged on the top of a first support column, the output end of the rotating motor is fixedly connected to a transmission rod, the transmission rod is rotatably arranged between the two first support columns, transmission teeth are fixedly arranged on the outer sides of the two outer shells, one side of the transmission rod is meshed with the two outer shells through the transmission teeth, and the two outer shells slide axially on the outer side of the transmission rod through the transmission teeth.

[0015] The invention discloses an automatic welding device which can adapt to different diameters of large pipelines in power stations.

[0016] The beneficial effects are:

[0017] By setting a welding mechanism, a rotating mechanism and a clamping mechanism, when in use, the power station pipeline is passed through the shell and placed in a suitable position through two transport mechanisms, and is clamped by the clamping mechanism inside the shell, and then the two shells are controlled to move relative to each other so that the end faces of the two power station pipelines are closely fitted, and then the welding mechanism is controlled to move to a suitable position, and welding is started, and at the same time, the shell is controlled by the rotating mechanism to drive the power station pipeline to rotate synchronously, so as to complete the automatic welding of the pipeline, and the welding is more convenient and quick, and the welding position and angle are mechanically controlled to achieve a better welding effect;

[0018] By setting a clamping motor, a rotating disk and a clamping block, when clamping the power station pipeline, first turn on the clamping motor inside the shell to rotate, and the clamping motor drives the two rotating disks to rotate. After the rotating disks rotate inside the shell, they drive multiple guide rods on each side to slide inside the shell, so that the clamping blocks at one end of the multiple guide rods clamp the power station pipeline, effectively achieving a stable clamping of the power station pipeline. At the same time, the above steps can be used to clamp power station pipelines of different diameters, and the welding mechanism and welding angle can be adjusted to perform welding operations, effectively improving the practical performance of the device:

[0019] By setting a welding base, a fixed block and a clamp, when welding, the welding base is first moved to a suitable position by the second sliding seat and the first sliding seat, and then the rotating seat is controlled to adjust the fixed block to a suitable angle, and then the telescopic rod is opened to extend the clamp to the joint of the two power station pipeline end faces, and then the welding operation is performed. By designing the welding mechanism to be a structure that can rotate at multiple angles, more accurate welding can be achieved during operation. At the same time, the first sliding seat can be used to control the second sliding seat to drive the welding mechanism to reciprocate to achieve vertical reciprocating welding of the cut surface, thereby achieving a variety of different welding operations, effectively improving the welding effect of the device, and making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a clamping base of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0023] Figure 3 This is a schematic diagram of the shell structure of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a second support column of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the shell of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0026] Figure 6 This is a schematic diagram of the gear shaft structure of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0027] Figure 7 This is a schematic diagram of the guide rod structure of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0028] Figure 8 This is a schematic diagram of the sliding shaft structure of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0029] Fig. 9 This is a schematic diagram of the structure of an operating table of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0030] Fig.10 This is a schematic diagram of the structure of a welding base of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0031] Fig.11 This is a schematic diagram of the support column structure of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0032] Fig.12 This is a schematic diagram of the structure of a second support rod of an automatic welding device that can adapt to different diameters of large pipelines in power stations according to the present invention;

[0033] Fig.13 The present invention is a schematic diagram of the first support rod structure of an automatic welding device that can adapt to different diameters of large pipelines in power stations.

[0034] In the figure: 1, device base; 10, first support column; 11, self-locking universal wheel; 2, operating table; 20, first sliding seat; 21, second sliding seat; 3, clamping base; 30, second support column; 31, driving rod; 32, sliding rod; 33, driving motor; 34, first support rod; 35, first spring; 36, first round roller; 4, transport base; 40, second support rod; 41, second round roller; 42, guide plate; 43, second spring; 44, connecting plate; 5, shell; 50, transmission gear; 6, rotating motor; 60, transmission rod; 7, welding base; 70, rotating seat; 71, fixed block; 72, telescopic rod; 73, clamp; 74, electric welding head; 8, power station pipeline; 9, clamping block; 90, rotating disk; 91, gear shaft; 92, clamping tooth; 93, clamping motor; 94, guide rod; 95, slide groove; 96, sliding shaft. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0036] Unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. "Including" or "comprising" used in the embodiments of the present invention neither limit the shapes, numbers, steps, actions, operations, components, originals and / or their groups mentioned, nor exclude the appearance or addition of one or more other different shapes, numbers, steps, actions, operations, components, originals and / or their groups, or the addition of these. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number and order of the indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] Unless otherwise specifically stated, the relative arrangement of the components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship, and the techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices shown should be considered as part of the authorized specification. In all examples shown and discussed here, any specific other examples may have different values. It should be noted that similar symbols and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] In the description of the embodiments of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the embodiments of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in the embodiments of the present invention and the features of the different embodiments or examples, without contradiction.

[0039] like Figure 1-13 As shown, according to one aspect of the present invention, there is provided an automatic welding device that can adapt to different diameters of large pipelines in power stations, including a device base 1, six self-locking universal wheels 11 are fixedly arranged at the bottom of the device base 1, an operating table 2 is fixedly arranged at the top of the device base 1, a welding mechanism is slidably arranged on the top of the operating table 2, transport bases 4 are fixedly arranged on both sides of the top of the device base 1, and transport mechanisms are telescopically arranged on the tops of the two transport bases 4, clamping bases 3 are slidably arranged on the top of the device base 1 between the two transport bases 4 and the operating table 2, and shells 5 are rotatably arranged on the tops of the two clamping bases 3, a first support column 10 is fixedly arranged on one side of the device base 1, and a rotating mechanism is rotatably arranged on the top of the first support column 10, and the rotating mechanism is connected to the two shells 5 meshing transmission, the two shells 5 are fixedly provided with clamping mechanisms inside, and the two shells 5 are fixedly clamped with the power station pipeline 8 by the clamping mechanisms. By setting the welding mechanism, the rotating mechanism and the clamping mechanism, when in use, the power station pipeline 8 is passed through the shells 5 and placed in a suitable position through the two transportation mechanisms, and is clamped by the clamping mechanism inside the shells 5, and then the two shells 5 are controlled to move relative to each other so that the end faces of the two power station pipelines 8 are closely fitted, and then the welding mechanism is controlled to move to a suitable position and start welding, and at the same time, the shells 5 are controlled by the rotating mechanism to drive the power station pipeline 8 to rotate synchronously, so as to complete the automatic welding of the pipeline, and the welding is more convenient and quick, and the welding position and angle are mechanically controlled to achieve a better welding effect.

[0040] In this embodiment, the clamping mechanism includes a clamping motor 93 fixedly arranged inside the housing 5, and both sides of the output end of the clamping motor 93 are meshedly connected with rotating disks 90, and the two rotating disks 90 are rotatably arranged inside the housing 5. Four guide rods 94 are slidably arranged on one side of the two rotating disks 90, and multiple guide rods 94 are slidably arranged inside the housing 5. One end of the multiple guide rods 94 is fixedly provided with a clamping block 9, and the multiple clamping blocks 9 are all in arc shape and the arc axes are consistent with the axis of the housing 5. By arranging the clamping motor 93, the rotating disk 90 and the clamping block 9, When clamping the power station pipeline 8, first turn on the clamping motor 93 inside the shell 5 to rotate, and the clamping motor 93 drives the two rotating disks 90 to rotate. After the rotating disks 90 rotate inside the shell 5, they drive multiple guide rods 94 on each side to slide inside the shell 5, so that the clamping blocks 9 at one end of the multiple guide rods 94 clamp the power station pipeline 8, effectively achieving a stable clamping of the power station pipeline 8. At the same time, the above steps can be used to clamp power station pipelines 8 of different diameters, and the welding mechanism and welding angle can be adjusted to perform welding operations.

[0041] In this embodiment, the four rotating disks 90 are fixedly provided with latch teeth 92 on the side facing the two clamping motors 93, and the output ends of the two clamping motors 93 are fixedly provided with gear shafts 91, and the two gear shafts 91 are respectively engaged with the two latch teeth 92. The four rotating disks 90 are provided with sliding grooves 95 at the connection with the guide rods 94. The sliding grooves 95 inside the same housing 5 are inclined in opposite directions and have the same inclination angle. Sliding shafts 96 are slidably provided on the inner sides of the multiple sliding grooves 95, and the multiple sliding shafts 96 are rotatably connected to the guide rods 94. The guide rods 94 are controlled by the above-mentioned setting to drive the clamping blocks 9 to extend and retract to clamp the power station pipelines 8 with different diameters, thereby effectively improving the stability of the clamping.

[0042] In this embodiment, a first sliding seat 20 is fixedly provided on the top of the operating table 2, a second sliding seat 21 is slidably provided on the top of the first sliding seat 20, and the welding mechanism includes a welding base 7 slidably provided on the top of the second sliding seat 21, a rotating seat 70 is rotatably provided on the top of the welding base 7, a fixed block 71 is rotatably provided inside the rotating seat 70, a telescopic rod 72 is fixedly provided on one side of the top of the fixed block 71, a clamp 73 is fixedly provided at one end of the telescopic rod 72, and an electric welding head 74 is fixedly provided inside the clamp 73. By providing the welding base 7, the fixed block 71 and the clamp 73, when welding is performed When welding, first move the welding base 7 to a suitable position through the second sliding seat 21 and the first sliding seat 20, then control the rotating seat 70 to adjust the fixed block 71 to a suitable angle, then open the telescopic rod 72 to extend the clamp 73 to the joint of the end faces of the two power station pipelines 8, and then perform the welding operation. By designing the welding mechanism to be a structure that can rotate at multiple angles, more accurate welding can be achieved during operation. At the same time, the first sliding seat 20 can also control the second sliding seat 21 to drive the welding mechanism to reciprocate to achieve vertical reciprocating welding of the cut surfaces, thereby achieving a variety of different welding operations.

[0043] In this embodiment, the transportation mechanism includes a plurality of second support rods 40 telescopically arranged on the top of the transportation base 4, a second round roller 41 is rotatably arranged between two opposite ones of the plurality of second support rods 40, the outer sides of the plurality of second round rollers 41 are in contact with the power station pipeline 8, and a second spring 43 is fixedly arranged at the bottom of the plurality of second support rods 40, and the plurality of second springs 43 are telescopically arranged inside the transportation base 4. The power station pipeline 8 is supported during transportation by the above arrangement, so that when the clamping mechanism releases the clamping of the power station pipeline 8 after welding is completed, the power station pipeline 8 will not wear to the clamping block 9, and at the same time, the elastic force of the spring is used to lift the power station pipelines 8 of different diameters roughly to the axial position of the clamping block 9, thereby facilitating clamping.

[0044] In this embodiment, connecting plates 44 are fixedly provided between the multiple second support rods 40 arranged side by side, guide plates 42 are fixedly provided on the tops of the four connecting plates 44, and one side of the four guide plates 42 are respectively inclined toward the two outer shells 5. Through the above arrangement, the power station pipeline 8 is guided during transportation, which facilitates transportation and improves the accuracy of clamping.

[0045] In this embodiment, a driving rod 31 is threadedly connected to one side of the bottom of the two clamping bases 3, and one end of the two driving rods 31 is fixedly connected to a driving motor 33. The two driving motors 33 are fixedly arranged inside the device base 1. The other side of the bottom of the two clamping bases 3 is slidably connected to a sliding rod 32, and the sliding rod 32 is fixedly arranged inside the device base 1. The two clamping bases 3 are driven respectively by the above-mentioned two driving motors 33, so that the two power station pipelines 8 are more stable when docking.

[0046] In this embodiment, second support columns 30 are fixedly provided on both sides of the outer shell 5 at the top of the two clamping bases 3, and four second support columns 30 are rotatably set on both sides of the outer shell 5. Two first support rods 34 are telescopically provided on one side of the top of the two clamping bases 3. First round rollers 36 are rotatably provided between the first support rods 34 of the same clamping base 3. The two first round rollers 36 are tightly fitted with the two power station pipelines 8 respectively, and first springs 35 are fixedly provided at the bottom of the four first support rods 34. The four first springs 35 are telescopically provided inside the two clamping bases 3 respectively. Through the above-mentioned arrangement, the power station pipeline 8 is further supported during welding and transportation, and the stability during welding and transportation is further improved.

[0047] In this embodiment, the rotating mechanism includes a rotating motor 6 fixedly arranged on the top of a first support column 10, and the output end of the rotating motor 6 is fixedly connected to a transmission rod 60, and the transmission rod 60 is rotatably arranged between the two first support columns 10. Transmission teeth 50 are fixedly arranged on the outer sides of the two outer shells 5, and one side of the transmission rod 60 is meshed with the two outer shells 5 through the transmission teeth 50. The two outer shells 5 slide axially on the outer side of the transmission rod 60 through the transmission teeth 50. Through the above arrangement, the two outer shells 5 are transmitted through the same transmission rod 60, so that during welding, the two outer shells 5 rotate more synchronously, making the welding more stable.

[0048] The working principle of the device is: when in use, the power station pipeline 8 is passed through the shell 5 and placed in a suitable position through two transportation mechanisms, and is clamped by the clamping mechanism inside the shell 5, and then the two shells 5 are controlled to move relative to each other so that the end faces of the two power station pipelines 8 are tightly fitted, and then the welding mechanism is controlled to move to a suitable position and start welding, and at the same time, the shell 5 is controlled by the rotating mechanism to drive the power station pipeline 8 to rotate synchronously, so as to complete the automatic welding of the pipeline, and the welding is more convenient and quick, and the welding position and angle are mechanically controlled to achieve a better welding effect.

[0049] The electrical components that appear in this article are all electrical components that exist in reality.

[0050] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic welding device that can adapt to different diameters of large pipelines in power stations, comprising a device base (1), characterized in that: Six self-locking universal wheels (11) are fixedly arranged at the bottom of the device base (1); an operating table (2) is fixedly arranged at the top of the device base (1); a welding mechanism is slidably arranged at the top of the operating table (2); transport bases (4) are fixedly arranged on both sides of the top of the device base (1); transport mechanisms are telescopically arranged at the tops of the two transport bases (4); a clamping base (3) is slidably arranged between the two transport bases (4) and the operating table (2) at the top of the device base (1); a shell (5) is rotatably arranged at the tops of the two clamping bases (3); a first support column (10) is fixedly arranged at one side of the device base (1); a rotating mechanism is rotatably arranged at the top of the first support column (10); the rotating mechanisms are meshed and transmitted with the two shells (5); a clamping mechanism is fixedly arranged inside the two shells (5); the two shells (5) are fixedly clamped to the power station pipeline (8) by the clamping mechanism.

2. The automatic welding equipment according to claim 1, which can adapt to different diameters of large pipelines in power stations, is characterized by: The clamping mechanism comprises a clamping motor (93) fixedly arranged inside the housing (5), and both sides of the output end of the clamping motor (93) are meshingly connected with rotating disks (90), and the two rotating disks (90) are rotatably arranged inside the housing (5), and four guide rods (94) are slidably arranged on one side of the two rotating disks (90), and the plurality of guide rods (94) are slidably arranged inside the housing (5), and one end of the plurality of guide rods (94) is fixedly arranged with a clamping block (9), and the plurality of clamping blocks (9) are all in an arc shape and the arc axis is consistent with the axis of the housing (5).

3. The automatic welding equipment according to claim 2, which can adapt to different diameters of large pipelines in power stations, is characterized by: The four rotating disks (90) are all fixedly provided with latch teeth (92) on the side facing the two clamping motors (93); the output ends of the two clamping motors (93) are all fixedly provided with gear shafts (91); the two gear shafts (91) are respectively meshed with the two latch teeth (92); the four rotating disks (90) are all provided with sliding grooves (95) at the connection with the guide rod (94); the sliding grooves (95) inside the same housing (5) are inclined in opposite directions and have the same inclination angle; the inner sides of the plurality of sliding grooves (95) are all slidably provided with sliding shafts (96); the plurality of sliding shafts (96) are all rotationally connected to the guide rod (94).

4. The automatic welding equipment according to claim 3 that can adapt to different diameters of large pipelines in power stations is characterized by: A first sliding seat (20) is fixedly arranged on the top of the operating table (2), a second sliding seat (21) is slidably arranged on the top of the first sliding seat (20), the welding mechanism comprises a welding base (7) slidably arranged on the top of the second sliding seat (21), a rotating seat (70) is rotatably arranged on the top of the welding base (7), a fixed block (71) is rotatably arranged inside the rotating seat (70), a telescopic rod (72) is fixedly arranged on one side of the top of the fixed block (71), a clamp (73) is fixedly sleeved on one end of the telescopic rod (72), and an electric welding head (74) is fixedly arranged inside the clamp (73).

5. The automatic welding equipment according to claim 4, which can adapt to different diameters of large pipelines in power stations, is characterized by: The transport mechanism comprises a plurality of second support rods (40) telescopically arranged on the top of the transport base (4), a second round roller (41) is rotatably arranged between two opposite ones of the plurality of second support rods (40), the outer sides of the plurality of second round rollers (41) are in contact with the power station pipeline (8), a second spring (43) is fixedly arranged at the bottom of the plurality of second support rods (40), and the plurality of second springs (43) are telescopically arranged inside the transport base (4).

6. The automatic welding equipment according to claim 5, which can adapt to different diameters of large pipelines in power stations, is characterized by: A connecting plate (44) is fixedly arranged between the plurality of second support rods (40) arranged side by side, a guide plate (42) is fixedly arranged on the top of the four connecting plates (44), and one side of the four guide plates (42) is inclined towards the two outer shells (5) respectively.

7. The automatic welding equipment according to claim 6, which can adapt to different diameters of large pipelines in power stations, is characterized by: One side of the bottom of the two clamping bases (3) is threadedly connected to a driving rod (31), one end of the two driving rods (31) is fixedly connected to a driving motor (33), and the two driving motors (33) are fixedly arranged inside the device base (1). The other side of the bottom of the two clamping bases (3) is slidably connected to a sliding rod (32), and the sliding rod (32) is fixedly arranged inside the device base (1).

8. The automatic welding equipment according to claim 7, which can adapt to different diameters of large pipelines in power stations, is characterized by: Second support columns (30) are fixedly arranged on both sides of the outer shell (5) at the top of the two clamping bases (3); four second support columns (30) are rotatably arranged on both sides of the outer shell (5); two first support rods (34) are telescopically arranged on one side of the top of the two clamping bases (3); first round rollers (36) are rotatably arranged between the first support rods (34) of the clamping base (3) arranged in the same clamping base (3); the two first round rollers (36) are respectively tightly fitted with two power station pipelines (8); first springs (35) are fixedly arranged on the bottom of the four first support rods (34); and the four first springs (35) are respectively telescopically arranged inside the two clamping bases (3).

9. The automatic welding equipment according to claim 8, which can adapt to different diameters of large pipelines in power stations, is characterized by: The rotating mechanism comprises a rotating motor (6) fixedly arranged on the top of a first support column (10), the output end of the rotating motor (6) is fixedly connected to a transmission rod (60), the transmission rod (60) is rotatably arranged between the two first support columns (10), the outer sides of the two outer shells (5) are fixedly provided with transmission teeth (50), one side of the transmission rod (60) is meshed with the two outer shells (5) through the transmission teeth (50), and the two outer shells (5) slide axially on the outer side of the transmission rod (60) through the transmission teeth (50).

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