Welding and assembling device for inner and outer ring components of aero-engine combustion chamber flame tube

Abstract

This invention provides a welding and assembly device for inner and outer ring components of an aero-engine combustor flame tube, relating to the field of aerospace technology. The device includes a support base, a clamping mechanism fixedly connected to the upper end of the support base, a clamping assembly at the upper end of the clamping mechanism for clamping the flame tube assembly, and an inner ring extension mechanism fixedly mounted on the upper end of the support base. This device, by incorporating a retractable inner ring welding gun, allows the welding gun to extend into the inside of the flame tube and approach the inner wall. By installing a reversing plate inside the cavity frame, the fuel injection direction of the inner ring welding gun can be adjusted and controlled, facilitating directional heating during welding of the inner ring components of the flame tube. This achieves directional heating and welding inside the flame tube, solving the problem of limited space inside the flame tube preventing directional heating.

Description

Technical Field

[0001] This invention relates to the field of aviation technology, specifically to a welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine. Background Technology

[0002] The flame tube is a thin-walled metal cylinder used to control combustion, mixing, and cooling. It is one of the core components of the combustion chamber of a gas turbine engine and an industrial combustion system. Made of thin alloy plates, it must withstand high temperatures and high-speed airflow impacts in its operating environment. The flame tube achieves combustion organization, airflow stability, and heat transfer through structures such as vortex generators, the cylinder body, and flame guide tubes. The vortex generator maintains flame stability by forming a recirculation zone, while the main combustion zone of the cylinder body ensures complete fuel combustion.

[0003] Chinese Patent CN113263247B discloses a welding and assembly method for a gas turbine flame tube. The method comprises the following steps: welding the tail end of the neck ring and the head end of the front ring using argon arc welding; welding the head end of the first section of the flame tube to the tail end of the front ring using resistance welding; welding the head end of the second section of the flame tube to the tail end of the first section of the flame tube using resistance welding; welding the head end of the third section of the flame tube to the tail end of the second section of the flame tube using resistance welding; welding the head end of the fourth section of the flame tube to the tail end of the third section of the flame tube using resistance welding; welding the tail end of the fifth section of the flame tube to the head end of the rear ring using argon arc welding to form a connecting body between the fifth section of the flame tube and the rear ring; and welding the head end of the fifth section of the flame tube and the tail end of the fourth section of the flame tube together using resistance welding. This processing method effectively ensures the consistency of the overlapping interface dimensions, achieving an ideal welding gap after assembly of each ring; it also avoids the need for mouth size calibration, saving processing time and improving production efficiency.

[0004] Traditionally, when welding inner and outer ring components of a combustion chamber, the solder and the ring component are positioned at the welding location, and a heated welding torch is used for welding. However, after the welding torch heats and melts the solder, the ring component adheres to the molten solder, causing the pre-set position of the ring component to shift. Furthermore, the ring component is not heated evenly and cannot adhere to the inner and outer walls of the combustion chamber. When welding the inner ring component of the combustion chamber, the inability to heat from both ends of the component results in uneven heating of the welded parts, affecting the welding effect. To address these issues, a welding and assembly device for the inner and outer ring components of the combustion chamber of an aero-engine has been proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding and assembly device for inner and outer ring components of an aero-engine combustion chamber flame tube, comprising a support base, a clamping mechanism fixedly connected to the upper end of the support base, a clamping assembly provided at the upper end of the clamping mechanism for clamping the flame tube assembly, an inner ring extension mechanism fixedly provided at the upper end of the support base, an inner ring welding gun fixedly connected to the free end of the inner ring extension mechanism for extending into the inner side of the flame tube to weld the inner ring components, a material feeding and connecting mechanism provided on the surface of the inner ring extension mechanism, the material feeding and connecting mechanism being connected to the inner ring welding gun, a ring welding frame rotatably connected to the upper end of the support base, an outer ring welding mechanism provided on the surface of the ring welding frame for welding the outer surface of the flame tube, a supply pipe connected to the surface of the outer ring welding mechanism, and a fuel supply chamber fixedly connected to the upper surface of the support base, both the material feeding and connecting mechanism and the supply pipe being connected to the fuel supply chamber.

[0007] Preferably, the inner ring welding gun includes a control cylinder, with a linkage bevel tooth at the center of the inner side of the control cylinder. A push-retract screw is engaged with the surface of the linkage bevel tooth. The push-retract screw is located inside the control cylinder, and a welding gun frame is threadedly connected to the surface of the push-retract screw. The welding gun frame is slidably connected to the inner wall of the control cylinder. A welding gun head is connected to the surface of the welding gun frame for igniting and spraying fuel. The push-retract screw consists of a threaded rod and a bevel gear. The bevel gear meshes with the linkage bevel tooth, and the end face of the bevel gear is fixedly connected to the end face of the threaded rod. The threaded rod meshes with the welding gun frame. The welding gun frame includes a sliding rod, which is slidably connected to the control cylinder and threadedly connected to the threaded rod. A cavity frame is fixedly connected to the surface of the sliding rod. The welding gun head is connected to and passes through both sides of the cavity frame. A reversing shaft is rotatably connected to the inner side of the cavity frame. The surface of the reversing shaft is threaded, and a reversing plate is threadedly connected to the surface of the reversing shaft. The reversing plate slides inside the cavity frame.

[0008] Preferably, the inner ring extension mechanism includes a positioning shaft, an extension telescopic rod rotatably connected to the end face of the positioning shaft, a free end of the extension telescopic rod fixedly connected to the control cylinder, a motor fixedly connected to the upper end of the positioning shaft, a push tooth connected to the output end of the motor, a push disk meshing with the outer side of the push tooth, and the push disk fixedly connected to the outer side of the fixed end of the extension telescopic rod.

[0009] Preferably, the feeding and connecting mechanism includes an uncovered cavity, which is connected to the fuel supply chamber via a pipe. The uncovered cavity is fixedly located outside the positioning shaft. A ring is rotatably mounted on the end face of the uncovered cavity. The ring and the uncovered cavity form an annular cavity. A connecting pipe is connected to the surface of the ring. The connecting pipe passes through the push plate and connects to the dispersing ring. The connecting pipe between the dispersing ring and the cavity frame, the ring and the push plate is a rigid pipe, and the connecting pipe between the push plate and the dispersing ring is a flexible pipe that can extend and retract.

[0010] Preferably, the ring welding frame includes rotating teeth, a rotating ring meshing with the surface of the rotating teeth, the rotating ring being rotatably connected to the mounting base, a support frame being fixedly mounted on the surface of the rotating ring, and a push-pull telescopic rod being mounted on the surface of the support frame.

[0011] Preferably, the outer ring welding mechanism includes an outer feeding ring, the free end of a push-pull telescopic rod is fixed to the surface of the outer feeding ring, the outer feeding ring is an annular hollow shell, a guide rod is fixedly connected to the surface of the outer feeding ring, the guide rod is slidably connected to the support frame, and an outer gun head is fixedly connected to and passes through the surface of the outer feeding ring.

[0012] Preferably, the clamping mechanism includes a wrapping sleeve, with linkage teeth arranged on the inner side of the wrapping sleeve. The linkage teeth are connected by a chain, and a clamping frame is engaged on the outer side of the linkage teeth. The surface of the clamping frame is provided with teeth, and the clamping frame is slidably connected to the inner wall of the wrapping sleeve. A rubbing shaft is rotatably arranged on the inner side of the upper end of the clamping frame, and a lifting rack plate is engaged on the surface of the rubbing shaft. The lifting rack plate is slidably connected to the clamping frame.

[0013] Preferably, the clamping assembly includes a placement plate fixedly connected above the clamping frame. The clamping assembly also includes a stabilizing plate fixedly disposed on the upper end of the lifting rack plate. Rollers are provided on the surfaces of both the placement plate and the stabilizing plate. A power source is connected to the rollers at the lower end of the placement plate to drive the clamped object to rotate.

[0014] Preferably, the supply pipeline includes an extension pipe that is connected to the outer feeding ring. The extension pipe is fixedly connected to and connected to a rotating shell. The rotating shell is an annular ring with an "n" shaped cross-section. The rotating shell is fixed inside the support frame. A sealing ring is rotatably connected to the inner side of the rotating shell. The sealing ring is connected to the fuel supply chamber through a pipeline. The sealing ring and the rotating shell form an annular hollow shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The welding and assembly device for the inner and outer ring components of the combustion chamber of an aero-engine is equipped with a retractable inner ring welding gun, which can extend into the inner side of the combustion chamber and approach the inner wall. By setting a reversing plate inside the cavity frame, the fuel injection direction of the inner ring welding gun can be adjusted and controlled, making it easier to directionally heat the inner ring components during welding. This achieves the effect of directional heating and welding inside the combustion chamber, solving the problem of limited space inside the combustion chamber that prevents directional heating.

[0017] 2. The welding and assembly device for the inner and outer ring components of the combustion chamber of the aero-engine is equipped with an inner ring welding gun and welding gun heads evenly arranged on both sides of the welding gun frame, so that the welding gun heads are evenly distributed inside the combustion chamber. An outer ring welding mechanism is set around the outside of the combustion chamber and outer gun heads are arranged on the surface of the outer feeding ring. This ensures that the inner and outer ring components of the combustion chamber are heated synchronously and evenly during welding, preventing local heating during welding from causing the component connection position to melt and slip, resulting in the component welding position displacement problem.

[0018] 3. The welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of the aero-engine is equipped with a rotating inner ring welding gun and an outer ring welding mechanism. The welding heating position can be rotated to change the angle, which prevents the problem of different temperatures at different points due to the fixed heating position. By setting a telescopic mechanism, the welding position can be extended and retracted on the surface and inside of the flame tube to reach a suitable position for heating and welding. This allows the welding device to quickly reach the point for heating and solves the problem of difficulty in adjusting the fixed welding position. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a diagram showing the overall structural layout of the present invention.

[0021] Figure 3 This is a schematic diagram of the stabilizing plate structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the clamping frame structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the drive disk structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the welding gun frame structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the commutator structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the outer feeding ring structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the rotating ring structure of the present invention.

[0028] In the diagram: 1. Base; 2. Clamping mechanism; 21. Wrapping sleeve; 22. Linkage gear; 23. Clamping frame; 24. Rubbing shaft; 25. Lifting rack plate; 3. Clamping assembly; 31. Placement plate; 32. Stabilizing plate; 33. Roller; 4. Inner ring extension mechanism; 41. Positioning shaft; 42. Extension telescopic rod; 43. Pushing gear; 44. Pushing disc; 5. Inner ring welding gun; 51. Control cylinder; 52. Linkage bevel gear; 53. Push-retract screw; 54. Welding gun frame; 541. Sliding rod; 542. Cavity frame; 543. Reversing shaft; 544. Reversing plate; 55. Welding gun head; 6. Feeding through mechanism; 61. Coverless cavity; 62. Connecting pipe; 63. Dispersing ring; 7. Ring welding frame; 71. Rotating gear; 72. Rotating ring; 73. Support frame; 74. Push-pull telescopic rod; 8. Outer ring welding mechanism; 81. Peripheral feeding ring; 82. Guide rod; 83. Peripheral gun head; 9. Supply pipe; 91. Extension pipe; 92. Rotating shell; 93. Sealing ring; 10. Fuel supply bin. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0033] like Figure 1-9 As shown, the welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine includes a mounting base 1. A clamping mechanism 2 is fixedly connected to the upper end of the mounting base 1. The clamping mechanism 2 includes a sleeve 21. Linkage teeth 22 are provided on the inner side of the sleeve 21. The linkage teeth 22 are connected by a chain. A clamping frame 23 is engaged on the outer side of the linkage teeth 22. The surface of the clamping frame 23 is provided with teeth. The clamping frame 23 is slidably connected to the inner wall of the sleeve 21. A rotatable axle 24 is rotatably provided on the inner side of the upper end of the clamping frame 23. A lifting rack plate 25 is engaged on the surface of the rotatable axle 24. The lifting rack plate 25 is slidably connected to the clamping frame 23. The clamping mechanism 2, through the cooperation of a chain and a sprocket, causes the arrayed linkage teeth 22 to rotate simultaneously, so that the clamping frames 23 can move closer to each other to adjust the spacing.

[0034] The clamping mechanism 2 is equipped with a clamping component 3 at its upper end for clamping the flame tube assembly. The clamping component 3 includes a placement plate 31, which is fixedly connected to the upper part of the clamping frame 23. The clamping component 3 also includes a stabilizing plate 32, which is fixedly mounted on the upper end of the lifting rack plate 25. Rollers 33 are provided on the surfaces of both the placement plate 31 and the stabilizing plate 32. The rollers 33 at the lower end of the placement plate 31 are connected to a power source for driving the clamped object to rotate. The clamping component 3 can lift the flame tube by setting the placement plate 31, so that the flame tube can be placed on the surface. By setting the stabilizing plate 32, the flame tube is attached to the surface, so that the stabilizing plate 32 and the placement plate 31 can cooperate to wrap around the outside of the flame tube for clamping. By setting the rollers 33 on the surfaces of the placement plate 31 and the stabilizing plate 32, the clamped flame tube can be rotated more easily.

[0035] An inner ring extension mechanism 4 is fixedly installed on the upper end of the base 1. The free end of the inner ring extension mechanism 4 is fixedly connected to an inner ring welding gun 5, which is used to extend into the inside of the flame tube to weld inner ring components. The inner ring welding gun 5 includes a control cylinder 51. A linkage bevel tooth 52 is provided at the center of the inner side of the control cylinder 51. A push-retract screw 53 is engaged on the surface of the linkage bevel tooth 52. The push-retract screw 53 is located inside the control cylinder 51. A welding gun frame 54 is threadedly connected to the surface of the push-retract screw 53. The welding gun frame 54 is slidably connected to the inner wall of the control cylinder 51. A welding gun head 55 is connected to the surface of the welding gun frame 54 for igniting and spraying fuel. The push-retract screw 53 is composed of a threaded rod and a bevel gear. The bevel gear meshes with the linkage bevel tooth 52. The end face of the bevel gear is fixedly connected to the end face of the threaded rod. The threaded rod meshes with the welding gun frame 54. The welding gun frame 54 includes a sliding rod 541. The sliding rod 541 is slidably connected to the control cylinder 51. The sliding rod 541 is threadedly connected to the threaded rod. A cavity frame 542 is fixedly connected to the surface of the welding gun 55, which is connected to and passes through both sides of the cavity frame 542. A reversing shaft 543 is rotatably connected to the inner side of the cavity frame 542. The surface of the reversing shaft 543 is threaded, and a reversing plate 544 is threaded to the surface of the reversing shaft 543. The reversing plate 544 slides inside the cavity frame 542. The inner ring welding gun 5 rotates through a push-and-retract screw 53, causing the welding gun frame 54 to slide inside the control cylinder 51. It can retract away from and approach the inner wall of the flame tube. By setting a reversing plate 544 inside the cavity frame 542, the reversing plate 544 can block the inlet of the cavity frame 542 and the welding gun head 55 when it moves. This can change the communication position between the cavity frame 542 and the welding gun head 55, so that the heating direction of the welding gun frame 54 can be changed, and the welding gun head 55 can heat and weld the inner ring parts from different directions on the inner wall of the flame tube.

[0036] The inner ring extension mechanism 4 includes a positioning shaft 41, with an extension telescopic rod 42 rotatably connected to the end face of the positioning shaft 41. The free end of the extension telescopic rod 42 is fixedly connected to the control cylinder 51. A motor is fixedly connected to the upper end of the positioning shaft 41, and a push tooth 43 is connected to the output end of the motor. A push disk 44 meshes with the outer side of the push tooth 43. The push disk 44 is fixedly connected to the outer side of the fixed end of the extension telescopic rod 42. The inner ring extension mechanism 4 uses the contraction of the extension telescopic rod 42 to allow the inner ring welding gun 5 to extend to the inside of the flame tube.

[0037] The inner ring extension mechanism 4 is provided with a feeding through mechanism 6. The feeding through mechanism 6 includes an uncovered cavity 61, which is connected to the fuel supply chamber 10 through a pipe. The uncovered cavity 61 is fixedly set outside the positioning shaft 41. A ring is rotatably set on the end face of the uncovered cavity 61. The ring and the uncovered cavity 61 form an annular cavity. A connecting pipe 62 is connected to the surface of the ring. The connecting pipe 62 passes through the push disk 44 and connects to the dispersing ring 63. The dispersing ring 63 is connected to the cavity frame 542. The connecting pipe 62 between the ring and the push disk 44 is a rigid pipe, while the connecting pipe 62 between the push disk 44 and the dispersing ring 63 is a flexible pipe. The telescopic flexible pipe and the feeding mechanism 6 can provide fuel to the inner ring welding gun 5 and can achieve the effect of continuous fuel supply when the inner ring welding gun 5 moves, extends, or rotates. The uncovered cavity 61 is a fixed part, and the ring on the end face is a rotating part. The mating surface of the ring and the uncovered cavity 61 is designed as an annular mating surface. The annular cavity is a fuel storage area. The fuel first enters the fixed cavity of the uncovered cavity 61 from the fuel supply chamber 10, and then flows into the annular cavity formed by the two, realizing the transition of fuel from the "fixed end to the rotating end". A rotary seal commonly used in equipment is embedded between the annular mating surface of the uncovered cavity 61 and the ring.

[0038] The feeding mechanism 6 is connected to the inner ring welding gun 5. The upper end of the support base 1 is rotatably connected to the ring welding frame 7. The ring welding frame 7 includes a rotating tooth 71. A rotating ring 72 is meshed on the surface of the rotating tooth 71. The end face of the rotating ring 72 is rotatably connected to the support base 1 through a bearing. A support frame 73 is fixedly installed on the surface of the rotating ring 72. A push-pull telescopic rod 74 is installed on the surface of the support frame 73. The ring welding frame 7 pushes the rotating ring 72 through the rotating tooth 71, so that the ring welding frame 7 can rotate and adjust the angle. The length can be adjusted by setting the push-pull telescopic rod 74.

[0039] The ring welding frame 7 is provided with an outer ring welding mechanism 8 for welding the outer surface of the flame tube. The outer ring welding mechanism 8 includes an outer feeding ring 81, and the free end of the push-pull telescopic rod 74 is fixed to the surface of the outer feeding ring 81. The outer feeding ring 81 is an annular hollow shell. A guide rod 82 is fixedly connected to the surface of the outer feeding ring 81. The guide rod 82 is slidably connected to the support frame 73. An outer gun head 83 is fixedly connected to and passes through the surface of the outer feeding ring 81. The outer ring welding mechanism 8 collects fuel and makes the fuel supply more stable by setting the outer feeding ring 81. The outer gun head 83 ignites and sprays the fuel, enabling the outer ring welding mechanism 8 to perform heating and welding on the periphery of the flame tube.

[0040] The outer ring welding mechanism 8 has a supply pipe 9 connected to its surface. A fuel supply chamber 10 is fixedly connected to the upper surface of the base 1. Both the feeding mechanism 6 and the supply pipe 9 are connected to the fuel supply chamber 10. The supply pipe 9 includes an extension pipe 91, which is connected to the outer feeding ring 81. The extension pipe 91 is fixedly connected to and connected to a rotating shell 92. The rotating shell 92 is an "n"-shaped ring. The rotating shell 92 is fixed inside the support frame 73. A sealing ring 93 is rotatably connected to the inner side of the rotating shell 92. The sealing ring 93 is connected to the fuel supply chamber 10 via a pipe. The sealing ring 93 and the rotating shell 92 form an annular shell. The supply pipe 9 can continuously supply fuel to the outer feeding ring 81 of the telescopic and rotating shaft. The "n"-shaped rotating shell 92 is a grooved fixed cavity. The sealing ring 93 is a rotating ring embedded in the groove of the rotating shell 92. The inner and outer mating surfaces of the two are precision annular mating surfaces, forming an annular shell that serves as a fuel storage area. Fuel is drawn from the fuel supply chamber 10. First, the fuel enters the central pipe of the rotating sealing ring 93 and then flows into the annular shell, realizing the transition of the fuel from the "rotating end to the fixed end". Rotary seals are embedded in the inner and outer annular mating surfaces of the rotating shell 92 (n-shaped groove) and the sealing ring 93.

[0041] In use, the flame tube and its assembly components are first placed on the surface of the placement plate 31. The starting motor drives the linkage gear 22 to rotate, causing the clamping frames 23 to move closer together and clamp the flame tube. The starting motor then drives the rubbing shaft 24 to rotate, pushing the lifting rack plate 25 downwards. This causes the lifting rack plate 25 to bring the stabilizing plate 32 closer to and against the outside of the flame tube. The power source drives the roller 33 to rotate, allowing the flame tube to rotate inside the placement plate 31 and the stabilizing plate 32. When welding is required on the inner components of the flame tube, the extension rod 42 is activated, allowing the inner ring welding gun 5 to extend into the inside of the flame tube. The feeding mechanism 6 provides fuel to the welding gun frame 54. The starting motor drives the linkage bevel gear 52 to rotate, pushing the push screw 53 to rotate, bringing the welding gun frame 54 closer to the inner wall of the flame tube. The starting motor then drives the reversing shaft 54... 3. Rotation causes the reversing plate 544 to slide inside the cavity frame 542, adjusting the fuel injection direction so that the fuel can be ignited and injected from the welding gun head 55 on a specific side, heating and welding the parts. The motor drives the push gear 43 to rotate, which in turn drives the push disk 44 to rotate. The push disk 44 can drive the extension rod 42 to rotate, so that the welding gun frame 54 can drive the welding gun head 55 to rotate, allowing the inner wall of the flame tube to be heated more evenly. When welding is required on the outside of the flame tube, the push and pull extension rod 74 drives the outer ring welding mechanism 8 to the outside of the flame tube. The supply pipe 9 provides fuel to the outer feeding ring 81, which is ignited and injected through the outer gun head 83. The rotating gear 71 drives the rotating ring 72 to rotate, which drives the ring welding frame 7 to rotate the outer ring welding mechanism 8, allowing the outer gun head 83 to rotate and heat the outside of the flame tube, performing uniform heating and welding on the outside of the flame tube.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0043] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding and assembly device for inner and outer ring components of an aircraft engine combustion chamber flame tube, including a mounting base (1), characterized in that: The upper end of the mounting base (1) is fixedly connected to a clamping mechanism (2), and the upper end of the clamping mechanism (2) is provided with a clamping component (3) for clamping the flame tube assembly. The upper end of the mounting base (1) is fixedly provided with an inner ring extension mechanism (4), and the free end of the inner ring extension mechanism (4) is fixedly connected to an inner ring welding gun (5) for extending into the inner side of the flame tube to weld the inner ring parts. The surface of the inner ring extension mechanism (4) is provided with a feeding through mechanism (6), and the feeding through mechanism (6) is connected to the inner ring welding gun (5). The upper end of the mounting base (1) is rotatably connected to a ring welding frame (7), and the surface of the ring welding frame (7) is provided with an outer ring welding mechanism (8) for welding the outer surface of the flame tube. The surface of the outer ring welding mechanism (8) is connected to a supply pipe (9). The upper surface of the mounting base (1) is fixedly connected to a fuel supply chamber (10), and the feeding through mechanism (6) and the supply pipe (9) are both connected to the fuel supply chamber (10). The inner ring welding gun (5) includes a control cylinder (51), a linkage bevel tooth (52) is provided at the center of the inner side of the control cylinder (51), a push-retract screw (53) is engaged on the surface of the linkage bevel tooth (52), the push-retract screw (53) is provided inside the control cylinder (51), a welding gun frame (54) is threadedly connected to the surface of the push-retract screw (53), the welding gun frame (54) is slidably connected to the inner wall of the control cylinder (51), and a welding gun head (55) is connected to the surface of the welding gun frame (54) for igniting and spraying fuel; The push-and-retract screw (53) consists of a threaded rod and a bevel gear. The bevel gear meshes with the linkage bevel gear (52). The end face of the bevel gear is fixedly connected to the end face of the threaded rod. The threaded rod meshes with the welding gun frame (54). The welding torch frame (54) includes a sliding rod (541), which is slidably connected to the control cylinder (51). The sliding rod (541) is threadedly connected to the threaded rod. A cavity frame (542) is fixedly connected to the surface of the sliding rod (541). The welding torch head (55) is connected to and passes through both sides of the cavity frame (542). A reversing shaft (543) is rotatably connected to the inside of the cavity frame (542). The surface of the reversing shaft (543) is threaded. A reversing plate (544) is threadedly connected to the surface of the reversing shaft (543). The reversing plate (544) slides inside the cavity frame (542). The inner ring extension mechanism (4) includes a positioning shaft (41), an extension telescopic rod (42) is rotatably connected to the end face of the positioning shaft (41), the free end of the extension telescopic rod (42) is fixedly connected to the control cylinder (51), a motor is fixedly connected to the upper end of the positioning shaft (41), a push tooth (43) is connected to the output end of the motor, a push disk (44) is meshed on the outside of the push tooth (43), and the push disk (44) is fixedly connected to the outside of the fixed end of the extension telescopic rod (42); The feeding through mechanism (6) includes an uncovered cavity (61), which is connected to the fuel supply chamber (10) through a pipe. The uncovered cavity (61) is fixedly set outside the positioning shaft (41). A ring is rotatably set on the end face of the uncovered cavity (61). The ring and the uncovered cavity (61) form an annular cavity. A connecting pipe (62) is connected to the surface of the ring. The connecting pipe (62) passes through the push plate (44) and is connected to the dispersing ring (63). The dispersing ring (63) is connected to the cavity frame (542). The connecting pipe (62) between the ring and the push plate (44) is a rigid pipe, while the connecting pipe (62) between the push plate (44) and the dispersing ring (63) is a flexible pipe that can extend and retract.

2. The welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine according to claim 1, characterized in that: The ring welding frame (7) includes a rotating tooth (71), a rotating ring (72) meshing on the surface of the rotating tooth (71), the end face of the rotating ring (72) being rotatably connected to the mounting base (1) through a bearing, a support frame (73) being fixedly provided on the surface of the rotating ring (72), and a push-pull telescopic rod (74) being provided on the surface of the support frame (73).

3. The welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine according to claim 2, characterized in that: The outer ring welding mechanism (8) includes an outer feeding ring (81), the free end of the push-pull telescopic rod (74) is fixed on the surface of the outer feeding ring (81), the outer feeding ring (81) is an annular hollow shell, a guide rod (82) is fixedly connected to the surface of the outer feeding ring (81), the guide rod (82) is slidably connected to the support frame (73), and an outer gun head (83) is fixedly connected to and passes through the surface of the outer feeding ring (81).

4. The welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine according to claim 1, characterized in that: The clamping mechanism (2) includes a wrapping sleeve (21), with a linkage tooth (22) on the inner side of the wrapping sleeve (21). The linkage teeth (22) are connected by a chain. A clamping frame (23) is engaged on the outer side of the linkage tooth (22). The clamping frame (23) has teeth on its surface. The clamping frame (23) is slidably connected to the inner wall of the wrapping sleeve (21). A rubbing shaft (24) is rotatably arranged on the inner side of the upper end of the clamping frame (23). A lifting rack plate (25) is engaged on the surface of the rubbing shaft (24). The lifting rack plate (25) is slidably connected to the clamping frame (23).

5. The welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine according to claim 4, characterized in that: The clamping assembly (3) includes a placement plate (31), which is fixedly connected above the clamping frame (23). The clamping assembly (3) also includes a stabilizing plate (32), which is fixedly set on the upper end of the lifting rack plate (25). Rollers (33) are provided on the surfaces of both the placement plate (31) and the stabilizing plate (32). The rollers (33) at the lower end of the placement plate (31) are connected to a power source to drive the clamped object to rotate.

6. The welding and assembly device for the inner and outer ring components of the combustion chamber flame tube of an aero-engine according to claim 4, characterized in that: The supply pipe (9) includes an extension pipe (91), which is connected to the outer feeding ring (81). The extension pipe (91) is fixedly connected to and connected to a rotating shell (92). The rotating shell (92) is an annular ring with an "n" shaped cross section. The rotating shell (92) is fixed inside the support frame (73). A sealing ring (93) is rotatably connected inside the rotating shell (92). The sealing ring (93) is connected to the fuel supply chamber (10) through a pipe. The sealing ring (93) and the rotating shell (92) form an annular hollow shell.

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