An engine nacelle production inner support skeleton automatic welding system

Abstract

The application belongs to the technical field of engine nacelle production, and particularly relates to an automatic welding system for an inner support framework for engine nacelle production, which comprises a frame, a fixed clamping assembly, a movable clamping assembly, an outer seam welding assembly, a cover ring pushing assembly and an inner seam welding assembly. The frame is composed of a cylinder part and an end plate. The fixed clamping assembly is used for clamping an inner heat dissipation pipe section and driving the same to rotate circumferentially. The movable clamping assembly clamps an outer heat dissipation pipe section and realizes axial displacement of the same. The outer seam welding assembly is responsible for welding and reinforcing of a spoiler and an intermediate support pipe section and outer seam welding. The cover ring pushing assembly adsorbs a cover ring and pushes the same axially. The inner seam welding assembly clamps the intermediate support pipe section and realizes axial displacement of the same, thereby completing inner seam welding. The application realizes automatic welding of the inner support framework, significantly improves welding efficiency, and enables the inner support framework to have the functions of air inlet rectifier cover support, heating and low-speed air inlet distortion control, thereby solving the problems of low efficiency and single function of the prior art.

Description

Technical Field

[0001] This invention belongs to the field of engine nacelle production technology, specifically relating to an automated welding system for an internal support frame used in engine nacelle production. Background Technology

[0002] The primary function of the air intake cowling in the engine nacelle is to adjust and optimize airflow. During flight, the engine needs to draw in a large amount of air to maintain its normal operation. Through its special design, the air intake cowling forces airflow in a specific direction, typically rearward, thereby ensuring a stable and efficient airflow supply to the engine. This optimized airflow not only improves engine thrust efficiency but also reduces drag, thus enhancing the overall performance of the aircraft.

[0003] The internal support frame in the air intake fairing is a key structural support that ensures efficient and stable airflow into the engine. First, the internal support frame provides the fairing with the necessary structural strength to withstand aerodynamic loads during flight, such as high-speed airflow impacts, vibrations, and pressure changes, thus maintaining overall shape stability. Second, its optimized support layout improves the airflow distribution within the air intake, reducing airflow separation and turbulence, ensuring air enters the engine core at a uniform speed and pressure, thereby improving engine efficiency. Furthermore, the internal support frame effectively suppresses potential deformation or resonance of the fairing during high-speed flight, preventing airflow disturbances or mechanical fatigue caused by structural vibrations.

[0004] The existing automated welding system for the internal support frame used in engine nacelle production has some shortcomings. First, it cannot meet the automated welding process of multi-functional internal support frames, resulting in low welding efficiency. Second, the internal support frame it welds and assembles has a single function and cannot meet the needs of providing intake cowling heating and assisting in controlling intake distortion at low speeds, in addition to providing internal support.

[0005] In view of this, the inventors hope to optimize and improve the existing automated welding system for the internal support frame used in the production of engine nacelles. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned problems existing in the prior art and to provide an automated welding system for the internal support frame of engine nacelle production.

[0007] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0008] This invention provides an automated welding system for the internal support frame of an engine nacelle, the system comprising a frame, a fixed clamping assembly, a movable clamping assembly, an outer seam welding assembly, a cover ring pushing assembly, and an inner seam welding assembly;

[0009] The overall shape of the inner support frame matches the shape of the intake fairing's frame filling cavity. The inner support frame is divided into an inner heat dissipation pipe section, a middle support pipe section, an outer heat dissipation pipe section, and a cover ring from the inside out. Several turbulence vane assemblies are installed circumferentially on the outer side of the middle support pipe section. The turbulence vane assembly includes a mounting box, a drive motor, a gear box, a steering gear set, a support shaft, and turbulence vanes. The drive motor is installed inside the mounting box. The output shaft of the drive motor is connected to the support shaft via a steering gear set placed inside the gear box. The support shaft is provided with movable support by the mounting box. Turbulence vanes are symmetrically installed on both sides of the support shaft located on the gear box.

[0010] The frame consists of a cylindrical section and an end plate at one end, with the other end of the cylindrical section being open. A fixed clamping assembly is installed inside the cylindrical section to clamp and lock the inner heat dissipation pipe section and drive it to rotate circumferentially. A movable clamping assembly is installed inside the cylindrical section to clamp and lock the outer heat dissipation pipe section and drive it to move axially. An outer seam welding assembly is installed inside the cylindrical section and located in the area between the fixed and movable clamping assemblies, used to achieve welding reinforcement of the baffle assembly on the intermediate support pipe section and outer seam welding after docking. A cover ring pushing assembly is installed on the end plate to adsorb and lock the cover ring and drive it to move axially. An inner seam welding assembly is installed on the end plate to clamp and lock the intermediate support pipe section and drive it to move axially, achieving inner seam welding after docking.

[0011] Furthermore, in the aforementioned automated welding system for the internal support frame of the engine nacelle, the interior of the intake fairing is provided with a frame filling cavity. The cross-section of the frame filling cavity is semi-elliptical, and the outer side plate of the frame filling cavity is provided with several sets of spoiler inlet and outlet holes along the circumferential direction.

[0012] Furthermore, in the aforementioned automated welding system for the internal support frame of the engine nacelle, the outer end face of the internal heat dissipation pipe section is provided with a plurality of first arc-shaped grooves inward along the circumferential direction, and the inner end of the first arc-shaped groove is connected to a first arc-shaped locking groove, wherein two first arc-shaped locking grooves form a group, and a first air guide channel is connected between the two first arc-shaped locking grooves in the same group.

[0013] The inner end face of the external heat dissipation pipe section is provided with multiple second arc-shaped sliding grooves along the circumferential direction. The inner end of the second arc-shaped sliding groove is connected to a second arc-shaped locking groove. Two second arc-shaped locking grooves form a group. The outer end face of the external heat dissipation pipe section is provided with multiple positioning grooves along the circumferential direction. One group of second arc-shaped locking grooves is connected to the corresponding positioning groove through a radial extension channel. In the other groups, two second arc-shaped locking grooves in the same group are connected to a second air guide channel.

[0014] The inner end face of the cover ring is provided with a plurality of positioning protrusions that cooperate with the positioning grooves along the circumferential direction, and the outer end face of the cover ring is provided with two radial air guide holes that extend into the corresponding adjacent positioning protrusions.

[0015] The inner and outer end faces of the intermediate support pipe section are each provided with a plurality of radial sliding columns that slide along the corresponding arc-shaped sliding grooves. The outer end of the radial sliding column is connected to an arc-shaped locking plate that can be screwed into the corresponding arc-shaped locking groove. A radial air guide channel is provided between two opposite radial sliding columns. A ring of storage grooves for installing baffle assembly is provided on the outer side of the intermediate support pipe section. The position of the storage grooves is offset from the position of the radial air guide channel.

[0016] The radial air guide hole, radial air guide channel, first air guide channel, and second air guide channel together form a heating pipeline system. The heating pipeline system heats the inner support frame by introducing high-temperature and high-pressure air drawn out by the engine compressor.

[0017] Furthermore, in the aforementioned automated welding system for the internal support frame used in the production of engine nacelles, the spoiler assembly has a clearance hole on the top cover of the mounting box for avoiding the spoiler, and the position of the clearance hole corresponds one-to-one with the position of the spoiler inlet and outlet hole.

[0018] Furthermore, in the aforementioned automated welding system for the internal support frame of the engine nacelle, the cover ring pushing assembly includes an annular suction cup, a first axial push rod, and a guide tube. The annular suction cup is equipped with a first axial push rod for pushing its axial displacement on one side, and a guide tube for providing guidance during its displacement.

[0019] Furthermore, in the aforementioned automated welding system for the internal support frame of the engine nacelle, the fixed clamping assembly includes a first annular carrier. The first annular carrier has a first carrier ring that restricts movement within it. Multiple first radial push rods are circumferentially mounted on the inner side of the first carrier ring. A first clamping block is mounted on the movable end of each first radial push rod. The outer shape of the first clamping block matches the outer wall shape of the inner heat dissipation pipe section. A steering motor is embedded and fixed in the first annular carrier. A driving bevel gear is mounted on the output end of the steering motor. A driven bevel gear that meshes with the driving bevel gear is formed on the outer side of the first carrier ring.

[0020] Furthermore, in the aforementioned automated welding system for the internal support frame of the engine nacelle, the moving clamping assembly includes a second annular carrier. The second annular carrier has a second carrier ring inside, and multiple second radial push rods are installed circumferentially on the inner side of the second carrier ring. A second clamping block is installed at the movable end of the second radial push rod. The outer shape of the second clamping block matches the outer wall shape of the outer heat dissipation pipe section. A drive screw for driving its axial displacement and multiple guide rods for providing guidance during its displacement are installed in the second annular carrier. The drive screw is driven to rotate by a screw motor.

[0021] Furthermore, in the aforementioned automated welding system for the internal support frame of the engine nacelle production, the internal seam welding assembly includes a second axial push rod, a rotary joint, a support column, a hollow round box, a third radial push rod, a third clamping block, a tilting motor, a turntable, a movable support component, and an internal seam welding mechanism. The movable end of the second axial push rod is connected to one end of the support column via the rotary joint. A hollow round box is installed at the other end of the support column. Multiple third radial push rods are installed circumferentially on the outer side of the hollow round box. A third clamping block is installed at the movable end of the third radial push rod. The outer shape of the third clamping block matches the inner wall shape of the intermediate support tube section. The internal movement of the hollow round box is restricted by a turntable driven by the tilting motor.

[0022] The turntable has multiple straight push grooves along its circumference, the hollow round box has a movable cavity inside that cooperates with the turntable, and each of the two side plates of the hollow round box has multiple radial sliding grooves along its circumference that communicate with the movable cavity.

[0023] The turntable and the hollow round box are supported by multiple movable support members along the circumference. The movable support members consist of a middle slider that slides and is limited in the corresponding straight push groove, and side slide rods located on both sides of the middle slider and slide and are limited in the corresponding radial slide grooves. An inner seam welding mechanism is installed on the outer side of the side slide rods.

[0024] Furthermore, in the aforementioned automated welding system for the internal support frame of the engine nacelle, the external seam welding assembly includes a base plate, an adjusting block, a third axial push rod, a connecting rod, and a laser welding head; the base plate is generally L-shaped, with an adjusting block hinged to the outer end of one plate and a third axial push rod mounted on the other plate; one end of the connecting rod is rotatably connected to the movable rod of the third axial push rod, and the other end of the connecting rod is provided with an anti-detachment ball head that is movable and restricted in the adjusting block; a laser welding head is mounted on the outer side of the adjusting block.

[0025] The structure of the inner seam welding mechanism is the same as that of the outer seam welding assembly.

[0026] Furthermore, the aforementioned automated welding system for the inner support frame of the engine nacelle production also includes a controller, which is connected to the fixed clamping assembly, the moving clamping assembly, the cover ring pushing assembly, the inner seam welding assembly, and the outer seam welding assembly.

[0027] The beneficial effects of this invention are:

[0028] 1. Multifunctional welding processing: It can meet the automated welding processing of multifunctional internal support frame, improve welding efficiency, and overcome the problem of low welding efficiency in existing systems.

[0029] 2. Multifunctional: The welded and assembled internal support frame has a variety of functions. It can not only provide internal support for the air intake fairing, but also meet the needs of air intake fairing heating and assisting in the control of air intake distortion at low speed, thus solving the problem of the single function of the existing internal support frame.

[0030] 3. High degree of automation: All components work together and are controlled by a unified controller to achieve automated welding and assembly of the internal support frame, reducing manual operation and improving production accuracy and consistency.

[0031] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the intake fairing structure in this invention;

[0035] Figure 3 This is a schematic diagram of the internal support frame in this invention;

[0036] Figure 4 This is a structural exploded view of the internal support frame in this invention from one angle;

[0037] Figure 5 This is a structural exploded view of the internal support frame in this invention from another angle;

[0038] Figure 6 This is a schematic diagram of the internal heat dissipation pipe section in this invention;

[0039] Figure 7This is a schematic diagram of the external heat dissipation pipe section in this invention;

[0040] Figure 8 This is a schematic diagram of the cover ring component in this invention;

[0041] Figure 9 This is a schematic diagram of the intermediate support pipe section in this invention;

[0042] Figure 10 This is a schematic diagram of the structure of the spoiler assembly in this invention;

[0043] Figure 11 This is a schematic diagram of the cover ring pushing component in this invention;

[0044] Figure 12 This is a schematic diagram of the fixed clamping component in the present invention;

[0045] Figure 13 This is a schematic diagram of the structure of the moving clamping assembly in this invention;

[0046] Figure 14 This is a schematic diagram of the internal seam welding assembly in this invention;

[0047] Figure 15 This is a schematic diagram of the turntable structure in this invention;

[0048] Figure 16 This is a schematic diagram of the hollow circular box in this invention;

[0049] Figure 17 This is a schematic diagram of the structure of the movable support member in this invention;

[0050] Figure 18 This is a schematic diagram of the structure of the external seam welding assembly in this invention;

[0051] In the attached diagram, the components represented by each number are as follows:

[0052] 1-Framework;

[0053] 2-Cover ring pushing assembly, 201-Annular suction cup, 202-First axial push rod, 203-Guide tube;

[0054] 3-Fixed clamping assembly, 301-First annular carrier, 302-First carrier ring, 303-First radial push rod, 304-First clamping block, 305-Steering motor, 306-Drive bevel gear;

[0055] 4-Moving clamping assembly, 401-Second annular carrier, 402-Second carrier ring, 403-Second radial push rod, 404-Second clamping block, 405-Drive screw, 406-Guide rod, 407-Screw motor;

[0056] 5-Inner seam welding assembly, 501-Second axial push rod, 502-Rotary joint, 503-Support column, 504-Hollow round box, 504a-Moving cavity, 504b-Radial slide groove, 505-Third radial push rod, 506-Third clamping block, 507-Tilting motor, 508-Turntable, 508a-Linear push groove, 509-Moving support, 509a-Intermediate slider, 509b-Side slide rod, 510-Inner seam welding mechanism;

[0057] 6-External seam welding assembly, 601-Base plate, 602-Adjusting block, 603-Third axial push rod, 604-Connecting rod, 605-Laser welding head;

[0058] 7-Inner heat dissipation pipe section, 701-First arc-shaped sliding groove, 702-First arc-shaped locking groove, 703-First air guide channel;

[0059] 8-Intermediate support pipe section, 801-Radial sliding column, 802-Arc-shaped locking plate, 803-Radial air guide channel, 804-Storage groove;

[0060] 9-Spoiler assembly, 901-Mounting box, 902-Drive motor, 903-Gear box, 904-Support shaft, 905-Spoiler, 906-Allowance hole;

[0061] 10-External heat dissipation pipe section, 101-Second arc-shaped sliding groove, 102-Second arc-shaped locking groove, 103-Second air guide channel, 104-Positioning groove, 105-Radial extension channel;

[0062] 11-Cover ring, 111-Positioning protrusion, 112-Radial air guide hole;

[0063] 12-Intake fairing, 121-Skeleton filling cavity, 122-Breakout inlet / outlet. Detailed Implementation

[0064] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] like Figure 1As shown, this embodiment provides an automated welding system for the internal support frame of an engine nacelle, including a frame 1, a fixed clamping assembly 3, a movable clamping assembly 4, an outer seam welding assembly 6, a cover ring pushing assembly 2, and an inner seam welding assembly 5. The frame 1 consists of a cylindrical section and an end plate at one end, with the other end of the cylindrical section being open. The fixed clamping assembly 3 is installed inside the cylindrical section and is used to clamp and lock the inner heat dissipation pipe section 7 and drive it to rotate circumferentially. The movable clamping assembly 4 is installed inside the cylindrical section and is used to clamp and lock the outer heat dissipation pipe section 10 and drive it to perform axial displacement. The outer seam welding assembly 6 is installed inside the cylindrical section and in the area between the fixed clamping assembly 3 and the movable clamping assembly 4, and is used to perform welding reinforcement of the spoiler assembly 9 on the intermediate support pipe section 8 and outer seam welding after docking. The cover ring pushing assembly 2 is installed on the end plate and is used to adsorb and lock the cover ring 11 and drive it to perform axial displacement. The inner seam welding assembly 5 is installed on the end plate and is used to clamp and lock the intermediate support pipe section 8 and drive it to perform axial displacement, achieving inner seam welding after docking.

[0066] Frame 1 provides the installation foundation and support structure for the entire system, and the various components are installed in different parts of the frame to achieve their respective functions.

[0067] like Figure 2 As shown, the air intake shroud 12 has a skeleton filling cavity 121 inside. The cross-section of the skeleton filling cavity 121 is a semi-elliptical structure. The outer side plate of the skeleton filling cavity 121 has several sets of turbulence vane inlet and outlet holes 122 along the circumferential direction.

[0068] like Figures 3-5 As shown, the overall shape of the inner support frame matches the shape of the frame filling cavity 121 of the air intake shroud 12. The inner support frame is divided into an inner heat dissipation pipe section 7, an intermediate support pipe section 8, an outer heat dissipation pipe section 10 and a cover ring 11 from the inside out. Several interference flow plate assemblies 9 are installed on the outer side of the intermediate support pipe section 8 along the circumferential direction.

[0069] like Figure 6 As shown, the outer end face of the inner heat dissipation pipe section 7 is provided with a plurality of first arc-shaped sliding grooves 701 along the circumferential direction. The inner end of the first arc-shaped sliding groove 701 is connected to a first arc-shaped locking groove 702. Two first arc-shaped locking grooves 702 form a group, and a first air guide channel 703 is connected between the two first arc-shaped locking grooves 702 in the same group.

[0070] like Figure 7As shown, the inner end face of the external heat dissipation pipe section 10 is provided with a plurality of second arc-shaped sliding grooves 101 inwardly along the circumference. The inner end of the second arc-shaped sliding grooves 101 is connected to a second arc-shaped locking groove 102. Two second arc-shaped locking grooves 102 form a group. The outer end face of the external heat dissipation pipe section 10 is provided with a plurality of positioning grooves 104 inwardly along the circumference. One group of second arc-shaped locking grooves 102 is connected to the corresponding positioning grooves 104 through a radial extension channel 105. In the other groups, two second arc-shaped locking grooves 102 in the same group are connected to a second air guide channel 103.

[0071] like Figure 8 As shown, the inner end face of the cover ring 11 is provided with a plurality of positioning protrusions 111 that cooperate with the positioning groove 104 in the circumferential direction, and the outer end face of the cover ring 11 is provided with two radial air guide holes 112 extending into the corresponding adjacent positioning protrusions 111.

[0072] like Figure 9 As shown, the inner and outer end faces of the intermediate support pipe section 8 are each provided with a plurality of radial sliding columns 801 that slide along the corresponding arc-shaped sliding grooves. The outer end of the radial sliding column 801 is connected to an arc-shaped locking plate 802 that can be screwed into the corresponding arc-shaped locking groove. A radial air guiding channel 803 is provided between two opposing radial sliding columns 801. A ring of receiving grooves 804 for installing the baffle assembly 9 is provided on the outer side of the intermediate support pipe section 8. The position of the receiving grooves 804 is offset from the position of the radial air guiding channel 803.

[0073] The radial air guide hole 112, the radial air guide channel 803, the first air guide channel 703, and the second air guide channel 103 together form a heating pipeline system. The heating pipeline system heats the inner support frame by introducing high-temperature and high-pressure air drawn out by the engine compressor.

[0074] like Figure 10 As shown, the spoiler assembly 9 includes a mounting box 901, a drive motor 902, a gear box 903, a steering gear set, a support shaft 904, and spoilers 905. The drive motor 902 is installed inside the mounting box 901. The output shaft of the drive motor 902 is connected to the support shaft 904 via the steering gear set located in the gear box 903. The support shaft 904 is provided with movable support by the mounting box 901. Spoilers 905 are symmetrically mounted on both sides of the support shaft 904 in the gear box 903. The top cover of the mounting box 901 has clearance holes 906 for avoiding the spoilers 905, and the positions of the clearance holes 906 correspond one-to-one with the positions of the inlet and outlet holes of the spoilers 905. The drive motor 902 drives the spoilers 905 to rotate, achieving intake distortion control at low speeds.

[0075] like Figure 11As shown, the cover ring pushing assembly 2 includes an annular suction cup 201, a first axial push rod 202, and a guide tube 203. The annular suction cup 201 has a first axial push rod 202 mounted on one side for pushing its axial displacement, and a guide tube 203 for providing guidance during its displacement. The cylinder of the first axial push rod 202 and the outer tube of the guide tube 203 are both fixed to the end plate of the frame 1.

[0076] The working principle of the cover ring pushing assembly 2: the annular suction cup 201 is used to adsorb and lock the cover ring 11, the first axial push rod 202 pushes the annular suction cup 201 to move axially, and the guide tube 203 provides guidance during the displacement to ensure that the cover ring 11 moves accurately to the designated position and realizes docking with the external heat dissipation pipe section 10.

[0077] like Figure 12 As shown, the fixed clamping assembly 3 includes a first annular carrier 301, with a first carrier ring 302 internally restricting movement within the first annular carrier 301. A plurality of first radial push rods 303 are circumferentially mounted on the inner side of the first carrier ring 302, and a first clamping block 304 is mounted on the movable end of the first radial push rod 303. The outer shape of the first clamping block 304 matches the outer wall shape of the inner heat dissipation pipe section 7. A steering motor 305 is embedded and fixed in the first annular carrier 301, and a driving bevel gear 306 is mounted on the output end of the steering motor 305. A driven bevel gear that meshes with the driving bevel gear 306 is formed on the outer side of the first carrier ring 302.

[0078] The working principle of the fixed clamping assembly 3: The first radial push rod 303 pushes the first clamping block 304 so that its outer shape matches the outer wall shape of the inner heat dissipation pipe section 7, thereby clamping and locking the inner heat dissipation pipe section 7. The steering motor 305 drives the active bevel gear 306 to rotate. The active bevel gear 306 meshes with the driven bevel gear, driving the first carrier ring 302 to rotate, thereby driving the inner heat dissipation pipe section 7 to rotate around the circumference, realizing the docking with the intermediate support pipe section 8 and the rotation requirements during the welding process.

[0079] like Figure 13 As shown, the movable clamping assembly 4 includes a second annular carrier 401, with a second carrier ring 402 internally restricting movement. Multiple second radial push rods 403 are circumferentially mounted on the inner side of the second carrier ring 402. A second clamping block 404 is mounted on the movable end of the second radial push rod 403. The outer shape of the second clamping block 404 matches the outer wall shape of the outer heat dissipation pipe section 10. A drive screw 405 for driving its axial displacement and multiple guide rods 406 for providing guidance during its displacement are provided in the second annular carrier 401. The drive screw 405 is driven to rotate by a screw motor 407.

[0080] The working principle of the moving clamping assembly 4: The second radial push rod 403 pushes the second clamping block 404, so that its outer shape matches the outer wall shape of the outer heat dissipation pipe section 10, thereby clamping and locking the outer heat dissipation pipe section 10. The lead screw motor 407 drives the drive lead screw 405 to rotate, and the drive lead screw 405 drives the second annular carrier 401 to move axially. The guide rod 406 provides guidance during the displacement, realizing the axial movement of the outer heat dissipation pipe section 10 and docking with the intermediate support pipe section 8.

[0081] like Figure 14 As shown, the inner seam welding assembly 5 includes a second axial push rod 501, a rotary joint 502, a support column 503, a hollow circular box 504, a third radial push rod 505, a third clamping block 506, a tilting motor 507, a turntable 508, a movable support member 509, and an inner seam welding mechanism 510. The movable end of the second axial push rod 501 is connected to one end of the support column 503 via the rotary joint 502, and the other end of the support column 503 is fitted with the hollow circular box 504. Multiple third radial push rods 505 are circumferentially mounted on the outer side of the hollow circular box 504, and the movable end of the third radial push rod 505 is fitted with a third clamping block 506. The outer shape of the third clamping block 506 matches the inner wall shape of the intermediate support tube section 8. The internal movement of the hollow circular box 504 is restricted by a turntable 508 driven by the tilting motor 507.

[0082] The working principle of the inner seam welding assembly 5: The second axial push rod 501 drives the support column 503 and the hollow round box 504 to move axially through the rotary joint 502. The third radial push rod 505 pushes the third clamping block 506 so that its outer shape matches the inner wall shape of the middle support pipe section 8, thereby clamping and locking the middle support pipe section 8. The flipping motor 507 drives the turntable 508 to rotate. The straight push groove 508a on the turntable 508 matches the radial sliding groove 504b on the hollow round box 504, so that the middle slider 509a of the movable support member 509 slides in the straight push groove 508a, and the side slide rod 509b slides in the radial sliding groove 504b, thereby driving the inner seam welding mechanism 510 to adjust its position and realize the welding of the inner seam.

[0083] like Figure 15 As shown, the turntable 508 has multiple straight push grooves 508a along its circumference. For example... Figure 16 As shown, the hollow round box 504 has an internal movable cavity 504a that cooperates with the turntable 508. Each of the two side plates of the hollow round box 504 has a plurality of radial grooves 504b that communicate with the movable cavity 504a along the circumferential direction.

[0084] The turntable 508 and the hollow round box 504 are jointly supported by multiple movable support components 509 along the circumference, such as... Figure 17As shown, the movable support 509 consists of an intermediate slider 509a that is slidably limited in a corresponding linear push groove 508a and side slide rods 509b located on both sides of it and slidably limited in corresponding radial slide grooves 504b. An inner seam welding mechanism 510 is installed on the outer side of the side slide rods 509b.

[0085] like Figure 18 As shown, the external seam welding assembly 6 includes a base plate 601, an adjusting block 602, a third axial push rod 603, a connecting rod 604, and a laser welding head 605. The base plate 601 is generally L-shaped, with the adjusting block 602 hinged to the outer end of one plate portion and the third axial push rod 603 mounted on the other plate portion. One end of the connecting rod 604 is rotatably connected to the movable rod of the third axial push rod 603, and the other end of the connecting rod 604 is provided with an anti-detachment ball head that is movable and restricted in the adjusting block 602. The laser welding head 605 is mounted on the outer side of the adjusting block 602.

[0086] The working principle of the outer seam welding assembly 6: The third axial push rod 603 pushes the connecting rod 604, which in turn drives the adjusting block 602 to rotate on the base plate 601, adjusting the position and angle of the laser welding head 605 to achieve welding reinforcement of the outer seam after the components are joined. The structure of the inner seam welding mechanism 510 is the same as that of the outer seam welding assembly 6. The inner seam welding mechanism 510 is used to achieve welding reinforcement of the inner seam after the components are joined.

[0087] The automated welding system also includes a controller, which is connected to the fixed clamping assembly 3, the moving clamping assembly 4, the outer seam welding assembly 6, the cover ring pushing assembly 2, and the inner seam welding assembly 5, respectively.

[0088] The specific welding and assembly process in this embodiment includes the following steps:

[0089] S1. Using a loading robot, the cover ring 11, the outer heat dissipation pipe section 10, the intermediate support pipe section 8 pre-bonded with the baffle assembly 9, and the inner heat dissipation pipe section 7 are sequentially transferred into the frame 1. The cover ring pushing assembly 2 is used to adsorb the cover ring 11, the moving clamping assembly 4 is used to clamp and lock the outer heat dissipation pipe section 10, the inner seam welding assembly 5 is used to clamp and lock the intermediate support pipe section 8, and the fixed clamping assembly 3 is used to clamp and lock the inner heat dissipation pipe section 7.

[0090] S2. The inner seam welding assembly 5 is used to drive the intermediate support pipe section 8 to move toward the inner heat dissipation pipe section 7. The fixed clamping assembly 3 is used to drive the inner heat dissipation pipe section 7 to rotate, so that the arc-shaped locking plate 802 at the inner end of the intermediate support pipe section 8 can be smoothly screwed into the corresponding first arc-shaped locking groove 702. The inner seam welding mechanism 510 and the outer seam welding assembly 6 are used to weld the inner seam and outer seam of the inner heat dissipation pipe section 7 and the intermediate support pipe section 8 after they are joined.

[0091] S3. Use the fixed clamping component 3 to drive the intermediate support pipe section 8 to rotate (the fixed clamping component 3 directly drives the inner heat dissipation pipe section 7 to rotate. Since the inner heat dissipation pipe section 7 is welded and fixed to the intermediate support pipe section 8 at this time, the fixed clamping component 3 can indirectly drive the intermediate support pipe section 8 to rotate). In conjunction with the outer seam welding component 6, the gap between the baffle assembly 9 and the receiving groove 804 on the intermediate support pipe section 8 is welded and reinforced.

[0092] S4. The moving clamping assembly 4 is used to drive the outer heat dissipation pipe section 10 to move toward the middle support pipe section 8, and the fixed clamping assembly 3 is used to drive the middle support pipe section 8 to rotate, so that the arc-shaped locking plate 802 at the outer end of the middle support pipe section 8 can be smoothly screwed into the corresponding second arc-shaped locking groove 102. The first air guide channel 703 in the inner heat dissipation pipe section 7 and the second air guide channel 103 in the outer heat dissipation pipe section 10 are staggered. The inner seam welding mechanism 510 and the outer seam welding assembly 6 on the outside are used to weld the inner seam and the outer seam after the outer heat dissipation pipe section 10 and the middle support pipe section 8 are joined.

[0093] S5. The fixed clamping component 3 is used to rotate the outer heat dissipation pipe section 10 to adjust the docking position (the fixed clamping component 3 can indirectly drive the intermediate support pipe section 8 to rotate. Since the intermediate support pipe section 8 is welded and fixed to the outer heat dissipation pipe section 10 at this time, the fixed clamping component 3 can indirectly drive the outer heat dissipation pipe section 10 to rotate). The cover ring pushing component 2 is used to drive the cover ring part 11 to move towards the outer heat dissipation pipe section 10, so that the positioning protrusion 111 is inserted into the positioning groove 104. The radial air guide hole 112, the radial air guide channel 803, the first air guide channel 703, and the second air guide channel 103 together form the heating pipe system. The outer inner seam welding mechanism 510 and the outer seam welding component 6 are used to perform spot welding on the inner seam and outer seam after the outer heat dissipation pipe section 10 and the cover ring part 11 are docked. Then, the fixed clamping component 3 is used to drive the whole to rotate. During the rotation, the outer inner seam welding mechanism 510 and the outer seam welding component 6 are used to perform welding on the inner seam and outer seam after the outer heat dissipation pipe section 10 and the cover ring part 11 are docked.

[0094] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automated welding system for the internal support frame used in the production of engine nacelles, characterized in that, The system includes a frame, a fixed clamping assembly, a movable clamping assembly, an outer seam welding assembly, a cover ring pushing assembly, and an inner seam welding assembly; The overall shape of the inner support frame matches the shape of the intake fairing's frame filling cavity. The inner support frame is divided into an inner heat dissipation pipe section, a middle support pipe section, an outer heat dissipation pipe section, and a cover ring from the inside out. Several turbulence vane assemblies are installed circumferentially on the outer side of the middle support pipe section. The turbulence vane assembly includes a mounting box, a drive motor, a gear box, a steering gear set, a support shaft, and turbulence vanes. The drive motor is installed inside the mounting box. The output shaft of the drive motor is connected to the support shaft via a steering gear set placed inside the gear box. The support shaft is provided with movable support by the mounting box. Turbulence vanes are symmetrically installed on both sides of the support shaft located on the gear box. The frame consists of a cylindrical section and an end plate at one end, with the other end of the cylindrical section being open. A fixed clamping assembly is installed inside the cylindrical section to clamp and lock the inner heat dissipation pipe section and drive it to rotate circumferentially. A movable clamping assembly is installed inside the cylindrical section to clamp and lock the outer heat dissipation pipe section and drive it to move axially. An outer seam welding assembly is installed inside the cylindrical section and located in the area between the fixed and movable clamping assemblies, used to achieve welding reinforcement of the baffle assembly on the intermediate support pipe section and outer seam welding after docking. A cover ring pushing assembly is installed on the end plate to adsorb and lock the cover ring and drive it to move axially. An inner seam welding assembly is installed on the end plate to clamp and lock the intermediate support pipe section and drive it to move axially, achieving inner seam welding after docking. The inner seam welding assembly includes a second axial push rod, a rotary joint, a support column, a hollow round box, a third radial push rod, a third clamping block, a flipping motor, a turntable, a movable support component, and an inner seam welding mechanism. The movable end of the second axial push rod is connected to one end of the support column via the rotary joint. A hollow round box is installed at the other end of the support column. Multiple third radial push rods are installed circumferentially on the outer side of the hollow round box. A third clamping block is installed at the movable end of the third radial push rod. The outer shape of the third clamping block matches the inner wall shape of the intermediate support tube section. The internal movement of the hollow round box is restricted by a turntable driven by the flipping motor. The turntable has multiple straight push grooves along its circumference, the hollow round box has a movable cavity inside that cooperates with the turntable, and each of the two side plates of the hollow round box has multiple radial sliding grooves along its circumference that communicate with the movable cavity. The turntable and the hollow round box are supported by multiple movable support members along the circumference. The movable support members consist of a middle slider that slides and is limited in the corresponding straight push groove, and side slide rods located on both sides of the middle slider and slide and are limited in the corresponding radial slide grooves. An inner seam welding mechanism is installed on the outer side of the side slide rods.

2. The automated welding system for the internal support frame of an engine nacelle as described in claim 1, characterized in that, The air intake fairing has an internal skeleton filling cavity with a semi-elliptical cross-section. The outer side plate of the skeleton filling cavity has several sets of turbulence vane inlet and outlet holes along the circumference.

3. The automated welding system for the internal support frame of an engine nacelle as described in claim 1, characterized in that, The outer end face of the inner heat dissipation pipe section is provided with a plurality of first arc-shaped sliding grooves inward along the circumferential direction. The inner end of the first arc-shaped sliding groove is connected to a first arc-shaped locking groove. Two first arc-shaped locking grooves form a group, and a first air guide channel is connected between two first arc-shaped locking grooves in the same group. The inner end face of the external heat dissipation pipe section is provided with multiple second arc-shaped sliding grooves along the circumferential direction. The inner end of the second arc-shaped sliding groove is connected to a second arc-shaped locking groove. Two second arc-shaped locking grooves form a group. The outer end face of the external heat dissipation pipe section is provided with multiple positioning grooves along the circumferential direction. One group of second arc-shaped locking grooves is connected to the corresponding positioning groove through a radial extension channel. In the other groups, two second arc-shaped locking grooves in the same group are connected to a second air guide channel. The inner end face of the cover ring is provided with a plurality of positioning protrusions that cooperate with the positioning grooves along the circumferential direction, and the outer end face of the cover ring is provided with two radial air guide holes that extend into the corresponding adjacent positioning protrusions. The inner and outer end faces of the intermediate support pipe section are each provided with a plurality of radial sliding columns that slide along the corresponding arc-shaped sliding grooves. The outer end of the radial sliding column is connected to an arc-shaped locking plate that can be screwed into the corresponding arc-shaped locking groove. A radial air guide channel is provided between two opposite radial sliding columns. A ring of storage grooves for installing baffle assembly is provided on the outer side of the intermediate support pipe section. The position of the storage grooves is offset from the position of the radial air guide channel. The radial air guide hole, radial air guide channel, first air guide channel, and second air guide channel together form a heating pipeline system. The heating pipeline system heats the inner support frame by introducing high-temperature and high-pressure air drawn out by the engine compressor.

4. The automated welding system for the internal support frame of an engine nacelle as described in claim 3, characterized in that, The spoiler assembly has a clearance hole on the top cover of the mounting box for avoiding the spoiler, and the position of the clearance hole corresponds one-to-one with the position of the spoiler inlet and outlet hole.

5. The automated welding system for the internal support frame of an engine nacelle as described in claim 4, characterized in that, The cover ring pushing assembly includes an annular suction cup, a first axial push rod, and a guide tube. The annular suction cup is equipped with a first axial push rod for pushing its axial displacement on one side, and a guide tube for providing guidance during its displacement.

6. The automated welding system for the internal support frame of an engine nacelle as described in claim 5, characterized in that, The fixed clamping assembly includes a first annular carrier, with a first carrier ring inside the first annular carrier for movement restriction. A plurality of first radial push rods are installed circumferentially on the inner side of the first carrier ring. A first clamping block is installed on the movable end of the first radial push rod. The outer shape of the first clamping block matches the outer wall shape of the inner heat dissipation pipe section. A steering motor is embedded and fixed in the first annular carrier. A driving bevel gear is installed on the output end of the steering motor. A driven bevel gear that meshes with the driving bevel gear is formed on the outer side of the first carrier ring.

7. The automated welding system for the internal support frame of an engine nacelle as described in claim 6, characterized in that, The moving clamping assembly includes a second annular carrier, the second annular carrier having a second carrier ring internally restricting movement, and multiple second radial push rods mounted circumferentially on the inner side of the second carrier ring. The movable end of the second radial push rod is equipped with a second clamping block, and the outer shape of the second clamping block matches the outer wall shape of the outer heat dissipation pipe section. A drive screw for driving its axial displacement and multiple guide rods for providing guidance during its displacement are provided in the second annular carrier. The drive screw is driven to rotate by a screw motor.

8. The automated welding system for the internal support frame of an engine nacelle as described in claim 7, characterized in that, The external seam welding assembly includes a base plate, an adjusting block, a third axial push rod, a connecting rod, and a laser welding head. The base plate is generally L-shaped, with an adjusting block hinged to the outer end of one plate and a third axial push rod installed on the other plate. One end of the connecting rod is rotatably connected to the movable rod of the third axial push rod, and the other end of the connecting rod is provided with an anti-detachment ball head that is movable and restricted in the adjusting block. A laser welding head is installed on the outer side of the adjusting block. The structure of the inner seam welding mechanism is the same as that of the outer seam welding assembly.

9. The automated welding system for the internal support frame of an engine nacelle as described in claim 8, characterized in that, It also includes a controller, which is connected to the fixed clamping assembly, the movable clamping assembly, the cover ring pushing assembly, the inner seam welding assembly, and the outer seam welding assembly, respectively.

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