Welding device for gas turbine shell machining

Abstract

The invention discloses a welding device for gas turbine shell machining. The welding device comprises a machining table. An inner cavity of the machining table is provided with a clamping mechanism used for butt joint and fixation of the shell, and the bottom of the machining table is provided with a displacement mechanism capable of adjusting the position of the machining table; through cooperative arrangement of the material clamping mechanism and the limiting mechanism, the two sets of shell parts can be made to move close to each other when bearing the shell parts till the shell parts make contact with each other to complete alignment, so that the alignment efficiency is improved, the outer side clamping parts can be driven to move while moving alignment is conducted synchronously, and the alignment efficiency is improved. When alignment is completed, the outer side clamping pieces are synchronously located on the side faces of the two sets of shell pieces to achieve lateral clamping, fixing is formed again, so that the stability during alignment and welding is improved, and the alignment speed and accuracy can be improved based on cooperation of the two combinations; and the limiting mechanism can assist and limit the alignment movement and the lateral clamping movement in the alignment process.

Description

Technical Field

[0001] The invention relates to the technical field of gas turbine casing welding, and in particular to a welding device for processing a gas turbine casing. Background Art

[0002] A gas turbine is an internal combustion power machine that converts the heat energy generated by fuel combustion into mechanical energy. It uses a continuously flowing gas as the working fluid to drive the impeller to rotate at high speed. A gas turbine is a high-efficiency thermal engine that is widely used in aviation, power generation, shipbuilding and other fields. The casing used for the gas turbine is a large cylinder with an air inlet at the front, a fuel inlet in the middle, and an exhaust port (gas outlet) at the rear. The casing assembly of the gas turbine is specially designed with sound insulation, heat insulation, impact resistance and pollution resistance to facilitate the rapid installation of the gas turbine. During the processing of the gas turbine casing, some positions need to be connected and fixed by welding between the two groups of components.

[0003] The casing welding device for gas turbines in the prior art has the following shortcomings: it is difficult to align the two groups of components during the welding process, and the stability is poor after the alignment is completed, so that there is a deviation during welding, resulting in defects when the two groups of components form a whole and cannot fully adapt to the internal components. Summary of the invention

[0004] The object of the present invention is to provide a welding device for processing gas turbine casings, which can realize the advantages of side end movement alignment when welding the gas turbine casing, and synchronously realize lateral clamping and fixing after the alignment is completed. Not only is the alignment speed fast and accurate, but it can also ensure that the two groups of components are fully contacted and adapted without deviation, and at the same time improve the complete adaptation of the welded casing and the required internal components to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: A welding device for processing a gas turbine casing, comprising a processing table; The inner cavity of the processing table is provided with a clamping mechanism for docking and fixing the shell, the bottom of the processing table is provided with a displacement mechanism for adjusting the position of the processing table, the top of the processing table is provided with a limit mechanism for limiting the movement of the clamping mechanism, and one end of the top of the displacement mechanism is provided with a welding mechanism for adjusting the welding position and angle; The material clamping mechanism includes a power assembly, a docking assembly and a side clamping assembly, wherein the power assembly is arranged inside the processing table, the docking assembly is arranged on the top of the power assembly, and the side clamping assembly is arranged outside the processing table; The welding mechanism comprises a moving assembly, a supporting assembly and a rotating assembly, wherein the moving assembly is arranged at one end of the top of the displacement mechanism, the supporting assembly is arranged at the moving end of the moving assembly, and the rotating assembly is arranged at the inner side of the supporting assembly; The position of loading and unloading is adjusted by the displacement mechanism, and the clamping mechanism is driven to move to assist the loading and unloading operations. The welding mechanism can be moved for welding, and the welding angle can be adjusted at the same time.

[0006] Exemplarily, the power assembly includes a first motor, the first motor is bolted to the outer end of the processing table, the output shaft of the first motor is keyed to a forward and reverse screw, and a first bevel gear is fixedly installed on the outer side of the forward and reverse screw.

[0007] Exemplarily, the docking assembly includes a first internal threaded seat, which is threadedly connected to the two ends of the outer sides of the forward and reverse screws respectively, a loading rack is fixedly installed on the top of the first internal threaded seat, a connecting block is fixedly installed on the bottom of the first internal threaded seat, a cross bar is fixedly installed on the inner side wall of the processing table, and the connecting block is located on the outer side of the cross bar and slides.

[0008] Exemplarily, the side clamp assembly includes a second bevel gear, which is keyed to the outside of the first bevel gear, a threaded rod is fixedly mounted on the outer end of the second bevel gear, the outer end of the threaded rod is rotatably connected to the inner wall of the processing table, the outer side of the threaded rod is threadedly connected to a second internally threaded seat, a limiting seat is fixedly mounted on the top of the second internally threaded seat, and a clamping seat is bolted to the top of the limiting seat.

[0009] Exemplarily, the displacement mechanism includes an output assembly and a sliding assembly, wherein the output assembly is disposed at the bottom of the processing table, and the sliding assembly is disposed at the top of the output assembly.

[0010] Exemplarily, the output assembly includes a base, the base is fixedly mounted on the bottom of the processing table, a second motor is bolted to the bottom of the inner cavity of the base, an output shaft of the second motor is keyed to a first connecting shaft, a first gear is fixedly mounted on the outer side of the first connecting shaft, and one end of the first gear is rotatably connected to the bottom of the inner cavity of the base; The sliding assembly includes a first tooth plate, the first tooth plate is meshed with the top of the first gear, a connecting strip is fixedly installed on the top of the first tooth plate, the top of the connecting strip is fixed to the bottom of the processing table, a sliding hole is opened at the center of the top of the base, the connecting strip slides inside the sliding hole, and a second limit block is fixedly installed on one end of the outer side of the first tooth plate; Slide grooves are provided on both sides of the top of the base, and a slide bar is slidably connected inside the slide groove. The top of the slide bar is fixed to the bottom of the processing table, and a first limit block is fixedly installed on the top of the inner cavity of the base.

[0011] Exemplarily, the limiting mechanism includes a first limiting hole and a second limiting hole, and the first limiting hole and the second limiting hole are both opened on the top of the processing table.

[0012] Exemplarily, the moving component includes a first electric slide, which is bolted to the top of the base, a second electric slide is bolted to the top of the moving end of the first electric slide, and a third electric slide is bolted to the moving end of the second electric slide.

[0013] Exemplarily, the support assembly includes a bracket, which is bolted at the moving end of the third electric slide, a circular groove is opened on the inner side of the bracket, an arc bar is slidably connected inside the circular groove, a second tooth plate is fixedly installed on the inner side of the arc bar, and a welding head is bolted to the bottom of the second tooth plate.

[0014] Exemplarily, the rotating assembly includes a side plate, which is fixedly mounted on the outside of the bracket, a third motor is bolted to the surface of one side of the side plate, an output shaft of the third motor is keyed to a second connecting shaft, a second gear is fixedly mounted on the outside of the second connecting shaft, the second gear is meshed with a second gear plate, and an outer end of the second connecting shaft is rotatably connected to the two sets of side plates.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention cooperates with the clamping mechanism and the limiting mechanism to simultaneously move the two groups of shell parts close to each other when carrying them, until they are in contact to complete the alignment, so as to improve the efficiency of the alignment. While moving for alignment, the outer clamping member will also be driven to move. When the alignment is completed, the outer clamping member is synchronously located on the sides of the two groups of shell parts to achieve lateral clamping and is fixed again to improve the stability during alignment and welding. The cooperation based on the above two combinations can improve the advantages of alignment speed and accuracy, and the limiting mechanism can assist and limit the movement of the alignment and the movement of the lateral clamping during the alignment process.

[0016] 2. The present invention realizes the advantage of adjusting the position of the clamping mechanism and the top outer shell member through the setting of the displacement mechanism. The material taking and placing operation can be facilitated by the movement and adjustment of the front and rear positions, and is also beneficial for the subsequent lifting operation of the welded and unwelded outer shell members. According to the cooperation of the output component and the sliding component, the meshing transmission between the teeth and the use of a two-way stable sliding method are used to ensure the movement and adjustment of the position.

[0017] 3. The present invention utilizes the setting of the welding mechanism to achieve the advantages of adjustable welding position and angle during welding, so as to adapt to the outer shell with an arc and ensure the accuracy during welding. The movable assembly can realize the adjustment of the left and right position, the upper and lower height adjustment, and the front and rear position movement adjustment during welding, so as to perform mobile welding operations. The supporting assembly can support and limit the rotating assembly, and the rotating assembly and the supporting assembly cooperate with each other and can adjust the angle of the welding part through meshing to adapt to the arc-shaped outer shell.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the processing table of the present invention; Figure 3 This is a schematic diagram of the structure of the first internal thread seat of the present invention; Figure 4 It is a schematic diagram of the internal structure of the base of the present invention; Figure 5 This is a schematic diagram of the structure of the second limit block of the present invention; Figure 6 This is a schematic diagram of the structure of the first electric slide of the present invention; Figure 7 This is a schematic diagram of the welding head structure of the present invention; Figure 8 This is a schematic diagram of the structure of the second connecting shaft of the present invention; Fig. 9 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0020] In the figure: 1, processing table; 2, clamping mechanism; 21, first motor; 22, forward and reverse screws; 23, first bevel gear; 24, first internal thread seat; 25, material carrier; 26, connecting block; 27, cross bar; 28, second bevel gear; 29, second internal thread seat; 210, limit seat; 211, clamping seat; 212, threaded rod; 3, limit mechanism; 31, first limit hole; 32, second limit hole; 4, displacement mechanism; 41, base; 42, second motor; 43, first connecting shaft ; 44. First gear; 45. First tooth plate; 46. Connecting strip; 47. Slide bar; 48. Slide groove; 49. Slide hole; 410. First limit block; 411. Second limit block; 5. Welding mechanism; 51. First electric slide; 52. Second electric slide; 53. Third electric slide; 54. Bracket; 55. Circular groove; 56. Side plate; 57. Third motor; 58. Second connecting shaft; 59. Second gear; 510. Second tooth plate; 511. Arc strip; 512. Welding head. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0022] The present invention provides a welding device for processing a gas turbine casing, comprising a processing table 1; The inner cavity of the processing table 1 is provided with a clamping mechanism 2 for docking and fixing the outer shell, the bottom of the processing table 1 is provided with a displacement mechanism 4 for adjusting the position of the processing table 1, the top of the processing table 1 is provided with a limit mechanism 3 for limiting the movement of the clamping mechanism 2, and one end of the top of the displacement mechanism 4 is provided with a welding mechanism 5 for adjusting the welding position and angle; The material clamping mechanism 2 includes a power assembly, a docking assembly and a side clamping assembly. The power assembly is arranged inside the processing table 1, the docking assembly is arranged on the top of the power assembly, and the side clamping assembly is arranged outside the processing table 1. The cooperation among the power assembly, the docking assembly and the side clamp assembly enables accurate and rapid alignment of the two sets of shell parts during welding. At the same time, side clamping and fixing can be performed synchronously after the docking is completed to ensure stability during welding and avoid deviation.

[0023] The welding mechanism 5 includes a moving assembly, a supporting assembly and a rotating assembly. The moving assembly is arranged at one end of the top of the displacement mechanism 4, the supporting assembly is arranged at the moving end of the moving assembly, and the rotating assembly is arranged at the inner side of the supporting assembly. Through the coordination among the moving assembly, the supporting assembly and the rotating assembly, the welding position and angle can be adjusted during the welding process to meet the requirements of welding of curved shell parts after horizontal straight line welding.

[0024] The position of loading and unloading is adjusted by the displacement mechanism 4, and the clamping mechanism 2 is driven to move to assist the loading and unloading operations. The welding mechanism 5 can be moved for welding, and the welding angle can be adjusted at the same time.

[0025] Preferred; like Figure 3 As shown, the power assembly includes a first motor 21, which is bolted to the outer end of the processing table 1. The output shaft key of the first motor 21 is connected with a forward and reverse screw 22, and a first bevel gear 23 is fixedly installed on the outer side of the forward and reverse screw 22. The two sets of loading racks 25 are driven to move synchronously closer or farther through forward and reverse rotation.

[0026] Among them, the first motor 21 adopts a forward and reverse motor or a bidirectional motor, and its model can be D200L-2500-55, including the above-mentioned models, but not limited to the above-mentioned models.

[0027] like Figure 3 As shown, the docking assembly includes a first internal threaded seat 24, which is threadedly connected to the two ends of the outer sides of the forward and reverse screw rods 22 respectively, a loading rack 25 is fixedly installed on the top of the first internal threaded seat 24, a connecting block 26 is fixedly installed on the bottom of the first internal threaded seat 24, and a cross bar 27 is fixedly installed on the inner side wall of the processing table 1. The connecting block 26 is located on the outer side of the cross bar 27 and slides, and the two groups of loading racks 25 are moved close to each other according to the thread driving method to complete the docking of the two groups of outer shell components.

[0028] like Figure 3 As shown, the side clamp assembly includes a second bevel gear 28, which is keyed to the outer side of the first bevel gear 23, and a threaded rod 212 is fixedly installed on the outer end of the second bevel gear 28, and the outer end of the threaded rod 212 is rotatably connected to the inner side wall of the processing table 1, and the outer side of the threaded rod 212 is threadedly connected to a second internally threaded seat 29, and a limited seat 210 is fixedly installed on the top of the second internally threaded seat 29, and a clamping seat 211 is bolted on the top of the limited seat 210, and the two groups of clamping seats 211 are moved inward at the same time by meshing rotation and synchronous driving, so as to complete the clamping and fixing of the two groups of shell joints, and two groups of threaded rods 212 are provided, and the threads on the outer sides of the two groups of threaded rods 212 are oppositely arranged to ensure that the clamping operation can be completed by synchronous approach movement.

[0029] Furthermore, the displacement mechanism 4 includes an output assembly and a sliding assembly. The output assembly is arranged at the bottom of the processing table 1, and the sliding assembly is arranged at the top of the output assembly.

[0030] like Figure 4 and 5 As shown, the output assembly includes a base 41, which is fixedly mounted on the bottom of the processing table 1, a second motor 42 is bolted to the bottom of the inner cavity of the base 41, an output shaft of the second motor 42 is keyed to a first connecting shaft 43, a first gear 44 is fixedly mounted on the outer side of the first connecting shaft 43, and one end of the first gear 44 is rotatably connected to the bottom of the inner cavity of the base 41; It is used to realize the power output operation when adjusting the position, and completes the left and right movable adjustment operation through the meshing transmission between the teeth, so as to facilitate the material receiving and releasing before welding and the material feeding after welding. At this time, the position is the welding position required after receiving and releasing the material; Among them, the second motor 42 adopts the same forward and reverse motor or bidirectional motor as mentioned above, and its model can be D200L-2500-55, including the above models, but not limited to the above models.

[0031] The sliding assembly includes a first tooth plate 45, which is meshed with the top of the first gear 44. A connecting strip 46 is fixedly installed on the top of the first tooth plate 45. The top of the connecting strip 46 is fixed to the bottom of the processing table 1. A sliding hole 49 is opened at the center of the top of the base 41. The connecting strip 46 slides inside the sliding hole 49. A second limit block 411 is fixedly installed on one end of the outer side of the first tooth plate 45. It is convenient to realize the driving during meshing transmission, and then realize left and right horizontal movement adjustment to achieve the above-mentioned displacement adjustment effect.

[0032] Slide grooves 48 are provided on both sides of the top of the base 41 , and a slide bar 47 is slidably connected inside the slide groove 48 . The top of the slide bar 47 is fixed to the bottom of the processing table 1 , and a first limit block 410 is fixedly installed on the top of the inner cavity of the base 41 .

[0033] Based on the sliding connection, it can support the operation and ensure stability during movement and adjustment.

[0034] Going a step further; like Figure 2 As shown, the limiting mechanism 3 includes a first limiting hole 31 and a second limiting hole 32 , and the first limiting hole 31 and the second limiting hole 32 are both opened on the top of the processing table 1 .

[0035] The first limiting hole 31 is mainly used to adapt the loading rack 25, and the second limiting hole 32 is mainly used to adapt the limiting seat 210, so as to ensure that the loading rack 25 moves stably inside the first limiting hole 31, and the limiting seat 210 moves inside the second limiting hole 32.

[0036] at last; like Figure 6As shown, the moving assembly includes a first electric slide 51, which is bolted to the top of the base 41, a second electric slide 52 is bolted to the top of the moving end of the first electric slide 51, and a third electric slide 53 is bolted to the moving end of the second electric slide 52, which has the advantage of position adjustment, and can adjust the position laterally as needed, and further adjust the height position, and finally move forward and backward, so that not only the welding can be moved during welding, but also the welding position can be adjusted to meet the needs of the operator.

[0037] The models of the first electric slide 51, the second electric slide 52 and the third electric slide 53 are SGLGW-60A-6000, and the specific required length of the stroke can be customized or selected according to actual conditions.

[0038] like Figure 8 As shown, the support assembly includes a bracket 54, which is bolted at the moving end of the third electric slide 53. A circular groove 55 is opened on the inner side of the bracket 54, and an arc strip 511 is slidably connected inside the circular groove 55. A second tooth plate 510 is fixedly installed on the inner side of the arc strip 511, and a welding head 512 is bolted to the bottom of the second tooth plate 510.

[0039] It has a supporting effect and can limit the second tooth plate 510 to ensure that it rotates inside when being driven.

[0040] like Figure 8 As shown, the rotating assembly includes a side plate 56, which is fixedly mounted on the outer side of the bracket 54, and a third motor 57 is bolted to the surface of one side plate 56, and the output shaft of the third motor 57 is keyed to the second connecting shaft 58, and a second gear 59 is fixedly mounted on the outer side of the second connecting shaft 58, and the second gear 59 is meshed with the second gear plate 510, and the outer end of the second connecting shaft 58 is rotatably connected with the two sets of side plates 56.

[0041] The power output operation can be realized, and the second gear 59 is driven to rotate according to the rotation, so that the second gear 59 and the second tooth plate 510 complete the meshing operation, thereby achieving the effect of angle adjustment during welding.

[0042] The third motor 57 is a forward and reverse motor or a bidirectional motor, and its model can be D200L-2500-55, including the above models, but not limited to the above models; When working, it is necessary to receive the material first, start the second motor 42, and use the second motor 42 to drive the first gear 44 to rotate through the first connecting shaft 43. When the first gear 44 rotates, the meshing drives the first tooth plate 45 and the connecting strip 46 to move. The above-mentioned rotation direction is counterclockwise rotation, and then the second limit block 411 is synchronously driven to move until the second limit block 411 contacts the first limit block 410 to form a limit, and the slide bar 47 is caused to slide inside the slide groove 48 to ensure stability during movement, and the limit formed when the second limit block 411 contacts the first limit block 410 will not cause derailment. At this time, the processing table 1 will be synchronously driven to move, so as to facilitate the material receiving operation. When feeding and unloading, it can be moved to the material receiving and feeding place in the same way as mentioned above. When the material receiving is completed, it is driven to move back to the position shown in the figure by clockwise rotation to wait for subsequent work; Before welding, the two sets of shell parts need to be docked and clamped and fixed. At this time, the limit mechanism 3 is started, and the limit mechanism 3 is used to directly drive the forward and reverse screws 22 to rotate, and the first bevel gear 23 is driven to rotate synchronously. At this time, the direction of rotation is clockwise. Based on the different threads on the surfaces of the forward and reverse screws 22, the first internal thread seats 24 at both ends drive the carrier 25 to move inward at the same time until the inner ends of the two sets of shell parts are in contact. At this time, the docking is completed, and the connecting block 26 during the movement will slide on the outside of the cross bar 27 to achieve the limit and auxiliary support operations; Synchronously, when the first bevel gear 23 rotates, it will drive the two sets of second bevel gears 28 to rotate together, the right one rotates clockwise, and the left one rotates counterclockwise. At this time, the two sets of second internal thread seats 29 synchronously drive the clamping seat 211 to move inward through the limit seat 210 until the clamping seat 211 clamps the docking position laterally. Due to the setting of the distance, the lateral clamping will also complete the clamping operation synchronously after the docking is completed, waiting for the subsequent stable welding operation, ensuring the accurate progress and welding effect of welding, and avoiding deviation. At this time, welding operations can be carried out. The first electric slide 51, the second electric slide 52 and the third electric slide 53 are directly started to perform lateral movement adjustment, height position adjustment and welding position adjustment as needed. During the welding process, movement adjustment can be performed synchronously to realize mobile welding operations. At the same time, when angle adjustment welding is required, the third motor 57 is started, and the third motor 57 is used to drive the second gear 59 to rotate through the second connecting shaft 58, and then the second gear plate 510 is driven to rotate on the inner side of the bracket 54 through the arc bar 511 through meshing, and the arc bar 511 slides inside the circular groove 55. Different angles can be adjusted according to clockwise and counterclockwise rotation to meet people's needs, and the second gear plate 510 will synchronously drive the welding head 512 to complete the adjustment operation together. In addition, argon arc welding or laser welding can be selected as needed during the welding process, including the above-mentioned welding methods but not limited to the above-mentioned welding methods.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for processing a gas turbine casing, characterized in that: comprising a processing table (1); The inner cavity of the processing table (1) is provided with a clamping mechanism (2) for docking and fixing the outer shell, the bottom of the processing table (1) is provided with a displacement mechanism (4) for adjusting the position of the processing table (1), the top of the processing table (1) is provided with a limit mechanism (3) for limiting the movement of the clamping mechanism (2), and one end of the top of the displacement mechanism (4) is provided with a welding mechanism (5) for adjusting the welding position and angle; The material clamping mechanism (2) comprises a power assembly, a docking assembly and a side clamping assembly, wherein the power assembly is arranged inside the processing table (1), the docking assembly is arranged on the top of the power assembly, and the side clamping assembly is arranged on the outside of the processing table (1); The welding mechanism (5) comprises a moving component, a supporting component and a rotating component, wherein the moving component is arranged at one end of the top of the displacement mechanism (4), the supporting component is arranged at the moving end of the moving component, and the rotating component is arranged on the inner side of the supporting component; The position of loading and unloading materials is adjusted by means of the displacement mechanism (4), and the clamping mechanism (2) is driven to move to assist the loading and unloading operations. The welding mechanism (5) can be moved to perform welding, and the welding angle can be adjusted at the same time.

2. A welding device for processing a gas turbine casing according to claim 1, characterized in that: The power assembly comprises a first motor (21), the first motor (21) being bolted to the outer end of the processing table (1), the output shaft of the first motor (21) being keyed to a forward and reverse screw (22), and a first bevel gear (23) being fixedly mounted on the outer side of the forward and reverse screw (22).

3. A welding device for processing a gas turbine casing according to claim 2, characterized in that: The docking assembly comprises a first internally threaded seat (24), the first internally threaded seat (24) being threadedly connected to the two ends of the outer sides of the forward and reverse screw rods (22), a loading rack (25) being fixedly mounted on the top of the first internally threaded seat (24), a connecting block (26) being fixedly mounted on the bottom of the first internally threaded seat (24), a cross bar (27) being fixedly mounted on the inner side wall of the processing table (1), and the connecting block (26) being slidably located on the outer side of the cross bar (27).

4. A welding device for processing a gas turbine casing according to claim 3, characterized in that: The side clamp assembly comprises a second bevel gear (28), the second bevel gear (28) being key-connected to the outer side of the first bevel gear (23), a threaded rod (212) being fixedly mounted on the outer end of the second bevel gear (28), the outer end of the threaded rod (212) being rotatably connected to the inner side wall of the processing table (1), the outer side of the threaded rod (212) being threadedly connected to a second internally threaded seat (29), a limiting seat (210) being fixedly mounted on the top of the second internally threaded seat (29), and a material clamping seat (211) being bolted to the top of the limiting seat (210).

5. A welding device for processing a gas turbine casing according to claim 1, characterized in that: The displacement mechanism (4) comprises an output component and a sliding component, the output component is arranged at the bottom of the processing table (1), and the sliding component is arranged at the top of the output component.

6. A welding device for processing a gas turbine casing according to claim 5, characterized in that: The output assembly comprises a base (41), the base (41) is fixedly mounted on the bottom of the processing table (1), a second motor (42) is bolted to the bottom of the inner cavity of the base (41), an output shaft of the second motor (42) is keyed to a first connecting shaft (43), a first gear (44) is fixedly mounted on the outer side of the first connecting shaft (43), and one end of the first gear (44) is rotatably connected to the bottom of the inner cavity of the base (41); The sliding assembly comprises a first tooth plate (45), the first tooth plate (45) meshing with the top of the first gear (44), a connecting strip (46) fixedly mounted on the top of the first tooth plate (45), the top of the connecting strip (46) being fixed to the bottom of the processing table (1), a sliding hole (49) being opened at the center of the top of the base (41), the connecting strip (46) being located inside the sliding hole (49) and sliding, and a second limit block (411) being fixedly mounted on one end of the outer side of the first tooth plate (45); Slide grooves (48) are provided on both sides of the top of the base (41), a slide bar (47) is slidably connected inside the slide groove (48), the top of the slide bar (47) is fixed to the bottom of the processing table (1), and a first limit block (410) is fixedly installed on the top of the inner cavity of the base (41).

7. A welding device for processing a gas turbine casing according to claim 1, characterized in that: The limiting mechanism (3) comprises a first limiting hole (31) and a second limiting hole (32), wherein the first limiting hole (31) and the second limiting hole (32) are both formed on the top of the processing table (1).

8. A welding device for processing a gas turbine casing according to claim 1, characterized in that: The moving assembly comprises a first electric slide (51), the first electric slide (51) is bolted to the top of the base (41), a second electric slide (52) is bolted to the top of the moving end of the first electric slide (51), and a third electric slide (53) is bolted to the moving end of the second electric slide (52).

9. A welding device for processing a gas turbine casing according to claim 8, characterized in that: The support assembly comprises a bracket (54), the bracket (54) being bolted to the moving end of the third electric slide (53), a circular groove (55) being provided on the inner side of the bracket (54), an arc-shaped bar (511) being slidably connected inside the circular groove (55), a second tooth plate (510) being fixedly mounted on the inner side of the arc-shaped bar (511), and a welding head (512) being bolted to the bottom of the second tooth plate (510).

10. A welding device for processing a gas turbine casing according to claim 9, characterized in that: The rotating assembly comprises a side plate (56), wherein the side plate (56) is fixedly mounted on the outside of the bracket (54), a third motor (57) is bolted to the surface of one side of the side plate (56), an output shaft of the third motor (57) is keyed to a second connecting shaft (58), a second gear (59) is fixedly mounted on the outside of the second connecting shaft (58), the second gear (59) is meshed with a second gear plate (510), and an outer end of the second connecting shaft (58) is rotatably connected to the two sets of side plates (56) in a through-type manner.

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