A device and method for repairing the surface of aircraft engine pipes

Abstract

This invention belongs to the technical field of welding equipment, and particularly relates to a device and method for repairing the surface of aero-engine pipes. The repair device includes a welding torch for welding and repairing the engine pipe assembly to be repaired; a moving component connected to the bottom of the welding torch for adjusting the position of the welding torch according to different welding positions; and a welding table for mounting the moving component. This invention incorporates a vibration component. During the grinding process, the impact block can vibrate in conjunction with the arc-shaped protrusion. When the vibration is transmitted to the surface of the engine pipe assembly, impurities and metal powder removed during grinding can be quickly separated from the surface of the engine pipe assembly under the action of the vibration force. Furthermore, during the welding process, the vibration generated by the vibration ring can resonate with the engine pipe assembly, thereby eliminating welding stress in the engine pipe assembly to a certain extent and improving the welding quality of the engine pipe assembly.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, and in particular relates to a device and method for repairing the surface of aero-engine pipelines. Background Technology

[0002] As a crucial component of aero engines, the pipeline system is used for the transport of fuel and gas during engine operation. During the service life of an aero engine, due to the long-term exposure to high temperatures, vibrations, and complex thermal stress, defects such as cracks and wear may appear at the pipe joints and pipe walls after a certain service period. In such cases, repair of the aero engine pipeline joints is necessary. To ensure repair quality, when the joint is severely broken, the damaged portion must be cut off and a new joint welded on.

[0003] Unlike general metal pipe welding, the operating environment of aero-engine pipes is far more complex, necessitating reliable welding quality. However, when using existing welding equipment to weld aero-engine pipes, welding stress may exist at the weld joint. If this stress cannot be released, it can lead to weld breakage during subsequent use.

[0004] Therefore, it is necessary to invent a device and method for repairing the surface of aero-engine pipelines to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an apparatus and method for repairing the surface of aero-engine pipelines, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an aero-engine pipeline surface repair device, comprising a welding torch for welding repair of the engine pipeline assembly to be repaired;

[0007] A movable component, connected to the bottom of the welding torch, is used to drive the welding torch to adjust its own position according to different welding positions;

[0008] A welding station for mounting the movable component;

[0009] A mounting component used to secure the engine piping assembly to be repaired;

[0010] A grinding assembly includes a grinding roller, a vibration assembly, and a lifting assembly. The grinding roller is used to grind the engine pipe assembly before and after welding by the welding torch. The vibration assembly is connected to the grinding roller and is used to vibrate the engine pipe assembly when the grinding roller grinds the engine pipe assembly. The grinding roller is mounted on the lifting assembly and is used to press the grinding roller tightly against the surface of the engine pipe assembly.

[0011] Furthermore, the fixing component includes:

[0012] A fixed shaft is inserted into the inside of the engine piping assembly to support the engine piping assembly.

[0013] A quick clamp is used to clamp and fix engine piping assemblies, and the bottom end of the quick clamp is connected to an elastic clamping mechanism.

[0014] A mounting bracket assembly for mounting the quick clamp;

[0015] The first driving component is connected to the fixed shaft and is used to drive the fixed shaft to rotate.

[0016] Furthermore, the vibration assembly includes:

[0017] A vibrating ring, connected to the grinding roller, is used to transmit vibration to the surface of the engine piping assembly;

[0018] A stop block, connected to the vibrating ring, is used to limit the vibration of the ring;

[0019] A fixed tube is connected to the end of the grinding roller and is located inside the vibration ring;

[0020] The arc-shaped protrusion is connected to the inner wall of the vibration ring;

[0021] The impact block is used to impact the arc-shaped protrusions to generate vibration during the rotation of the grinding roller;

[0022] The first elastic element is connected between the fixed tube and the impact block, and is used to fix the impact block and drive it to deflect.

[0023] Furthermore, the lifting component includes:

[0024] A U-shaped frame is provided at the bottom of the welding table;

[0025] A pusher, connected between the U-shaped frame and the welding table, is used to drive the U-shaped frame to move vertically;

[0026] A sleeve plate is connected to the U-shaped frame, and the sleeve plate is inserted vertically into the welding table;

[0027] A drive shaft, connected to the sleeve plate, is used to drive the grinding roller to rotate;

[0028] The second driving component is connected to the end of the driving shaft and is used to provide power to the driving shaft;

[0029] The second elastic element is connected between the sleeve plate and the U-shaped frame, and is used to softly fit the grinding roller against the surface of the engine pipeline assembly.

[0030] Furthermore, the grinding roller is also provided with a fixing component, which is used to fix the grinding roller to the corresponding position on the surface of the drive shaft according to the different grinding positions.

[0031] Furthermore, the elastic clamping mechanism includes a pressure rod, which is inserted into the bottom end of the quick clamp. A ball bearing is installed at the bottom end of the pressure rod, and a third elastic element is connected between the top end of the pressure rod and the interior of the quick clamp.

[0032] Furthermore, the surface of the fixed shaft is uniformly distributed with anti-slip textures along its axial direction, and the rotation direction of the fixed shaft is opposite to that of the drive shaft.

[0033] Furthermore, the number of the fixing frame assemblies is two sets, and the two sets of fixing frame assemblies are symmetrically distributed on the front and rear sides of the fixing shaft. The fixing frame assembly located on the rear side is fixedly connected to the top of the welding table, and the fixing frame assembly located on the front side is hinged to the top of the welding table. The fixing frame assembly includes two fixing plates and one mounting plate.

[0034] The mounting plate is obliquely connected between the tops of the two fixed plates, the quick clamp is mounted on the mounting plate, and the fixing frame assembly located on the front side is provided with a pin assembly to restrict the position of the mounting plate.

[0035] This invention also provides a method for using an aircraft engine pipeline surface repair device, comprising the following steps:

[0036] Step 1: Install the engine piping assembly to be repaired onto the fixed shaft, and use a quick clamp to press and secure the engine piping assembly.

[0037] Step 2: Move the welding torch by moving the component to ensure it is aligned with the position to be welded on the engine piping assembly;

[0038] Step 3: Activate the pusher to drive the grinding roller through the U-shaped frame to fit against the engine piping assembly;

[0039] Step 4: First, temporarily start the welding gun to perform spot welding on the engine pipe assembly to achieve initial fixation of the engine pipe assembly. Then, start the first and second drive components to drive the engine pipe assembly to rotate through the fixed shaft and drive shaft, respectively. Then, use the grinding roller to grind the area to be welded to remove impurities from the engine pipe assembly.

[0040] Step 5: After the impurities on the engine piping assembly have been removed, start the welding torch, the first drive component and the second drive component to perform welding operations on the rotating engine piping assembly.

[0041] Step 6: After welding is completed, use a grinding roller to grind the weld marks on the engine piping assembly. After grinding, release the quick clamp and then remove the welded engine piping assembly from the fixed shaft.

[0042] The technical effects and advantages of this invention are as follows:

[0043] 1. The present invention incorporates a vibration component. During the grinding process, the impact block can vibrate in conjunction with the arc-shaped protrusion. When the vibration is transmitted to the surface of the engine pipe assembly, the impurities and metal powder that are ground off can be quickly separated from the surface of the engine pipe assembly under the action of the vibration force. In addition, during the welding process, the vibration generated by the vibration ring can also resonate with the engine pipe assembly, thereby eliminating the welding stress of the engine pipe assembly to a certain extent and improving the welding quality of the engine pipe assembly.

[0044] 2. The present invention is equipped with a grinding roller. Before welding, the surface of the engine pipe assembly to be welded can be ground by the grinding roller to keep the welding area clean, thereby improving the subsequent welding quality. After welding, the welding scars of the engine pipe assembly can also be ground by the grinding roller to ensure that the welding area of ​​the engine pipe assembly is flat and beautiful.

[0045] 3. By setting the front-side fixing bracket assembly to a deflectable state, when it is necessary to attach some engine pipe assemblies with larger diameters to the fixing shaft, the connecting rod can be pulled, thereby driving the pin through the strip plate to move out of the insertion hole on the connecting plate and the fixing plate. At this time, the front-side mounting plate can be pushed forward and deflected downward, so that the front position of the fixing shaft is not blocked by the mounting plate, thus facilitating the operation of installing large-diameter engine pipe assemblies onto the fixing shaft. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0047] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0048] Figure 3 This is a three-dimensional schematic diagram of the structure of the fixed shaft, mounting plate, pin, and quick clamp in this invention.

[0049] Figure 4 This is a perspective sectional view of the quick clamping device in this invention;

[0050] Figure 5 This is a three-dimensional schematic diagram of the structure of the grinding roller, fixing component, vibrating ring and U-shaped plate in this invention;

[0051] Figure 6 This is a three-dimensional schematic diagram of the structure of the grinding roller, vibrating ring, impact block and arc-shaped protrusion in this invention.

[0052] In the diagram: 1. Welding torch; 2. Welding table; 3. Grinding roller; 4. Fixed shaft; 5. Quick clamp; 6. First driving component; 7. Vibrating ring; 8. Stop block; 9. Fixed tube; 10. Arc-shaped protrusion; 11. Impact block; 12. First elastic component; 13. U-shaped frame; 14. Pushing component; 15. Sleeve plate; 16. Drive shaft; 17. Second driving component; 18. Second elastic component; 19. Fixed component; 20. Pressure rod; 21. Ball bearing; 22. Third elastic component; 23. Fixed plate; 24. Mounting plate; 25. Moving plate; 26. Limiting rod; 27. Screw; 28. Third driving component; 29. ​​Connecting plate; 30. Connecting rod; 31. Strip plate; 32. Pin. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0054] This invention provides, for example Figures 1 to 6The device shown is a surface repair device for an aero-engine pipeline, including a welding torch 1, a moving assembly, a welding table 2, and a grinding assembly. The welding torch 1 is used to weld and repair the engine pipeline assembly to be repaired. The engine pipeline assembly mainly includes the original pipe section and a connector with mounting holes. The moving assembly is connected to the bottom of the welding torch 1 and is used to drive the welding torch 1 to adjust its position according to different welding positions. The moving assembly includes a moving plate 25, a limiting rod 26, a screw 27, and a third driving component 28. The moving plate 25 is connected to the bottom of the welding torch 1. There are two limiting rods 26, both of which are horizontally slidably inserted between the two sides of the moving plate 25. The screw 27 is threadedly inserted between the two sides of the moving plate 25, and both ends of the screw 27 and the limiting rods 26 are rotatably sleeved with the same first fixing block. The first fixing block is fixedly connected to the top of the welding table 2. The third driving component 28 can be a motor. One end of rod 27; welding table 2 for installing moving components; fixing components for pressing and fixing the engine pipe assembly to be repaired; grinding components, including grinding roller 3, vibration components and lifting components, grinding roller 3 is used for grinding the engine pipe assembly before and after welding by welding gun 1, and the middle section of grinding roller 3 is the grinding section, vibration components are connected to grinding roller 3, and are used to vibrate the engine pipe assembly when grinding by grinding roller 3, grinding roller 3 is installed on lifting components, and is used to press grinding roller 3 against the surface of engine pipe assembly; grinding roller 3 is also provided with fixing parts 19, there are two fixing parts 19, and the two fixing parts 19 are symmetrically arranged on both sides of the grinding section of grinding roller 3, the fixing parts 19 can be screws, the fixing parts 19 are threaded into grinding roller 3, and are used to fix grinding roller 3 to the corresponding position on the surface of drive shaft 16 according to different grinding positions;

[0055] When welding the engine piping assembly, the original pipe section and connector of the engine piping assembly are sequentially fitted onto the fixed shaft 4. At this time, the original pipe section and the replaced connector of the engine piping assembly can be hung on the fixed shaft 4 under the action of gravity and automatically maintain coaxiality. Then, the third drive component 28 is activated, which drives the moving plate 25 and the welding torch 1 on its top along the direction of the limit rod 26 to the position of the engine piping assembly to be welded via the screw 27. Then, the welding torch 1 is briefly activated to perform spot welding on the original pipe section and connector of the engine piping assembly, so that the original pipe section and connector can be temporarily connected together to form a whole. Then, the fixed component is used to fix the connection on the fixed shaft. The engine pipe assembly on 4 is pressed and fixed. After the engine pipe assembly is fixed, the fixing part 19 on the grinding roller 3 is loosened first, so that the grinding roller 3 is moved to the position directly opposite the part of the engine pipe assembly to be welded. Then the fixing part 19 is tightened to fix the position of the grinding roller 3. Then the lifting assembly is activated, so that the grinding roller 3 is moved upward and kept in contact with the part of the engine pipe assembly to be welded. Then the fixing assembly and the grinding roller 3 are activated, so that while the engine pipe assembly is rotated, the grinding roller 3 is used to grind the part of the engine pipe assembly to be welded on the surface, keeping the weld clean and thus improving the subsequent welding quality.

[0056] After the grinding component completes the grinding and cleaning operation on the engine pipe assembly to be welded, as the engine pipe assembly continues to rotate, the welding gun 1 can be used to perform a ring welding operation on the engine pipe assembly. After the welding is completed, the grinding roller 3 can be used to grind the weld scars at the welded part of the engine pipe assembly, thereby ensuring that the welded part of the engine pipe assembly is flat and beautiful.

[0057] During the grinding process of the grinding roller 3, the vibration component can generate vibration. When the vibration is transmitted to the surface of the engine pipe assembly, the impurities and metal powder that are ground off can be quickly separated from the surface of the engine pipe assembly under the action of vibration. In addition, during the welding process, the vibration generated by the vibration component can also resonate with the engine pipe assembly, thereby eliminating the welding stress of the engine pipe assembly to a certain extent and improving the welding quality of the engine pipe assembly.

[0058] like Figures 1 to 4As shown, the fixing assembly includes: a fixing shaft 4, quick clamps 5, a fixing bracket assembly, and a first driving component 6. The fixing shaft 4 is inserted into the inner side of the engine pipeline assembly to support it. A second fixing block is rotatably sleeved on the fixing shaft 4, and the second fixing block is fixedly connected to the top of the welding table 2. The surface of the fixing shaft 4 has anti-slip textures evenly distributed along its axial direction, and the rotation direction of the fixing shaft 4 is opposite to the rotation direction of the driving shaft 16. There are multiple quick clamps 5, which are used to clamp and fix the engine pipeline assembly. The bottom end of the quick clamp 5 is connected to an elastic... The clamping mechanism includes a pressure rod 20, which is slidably inserted into the bottom end of the quick clamp 5. A ball bearing 21 is installed at the bottom end of the pressure rod 20. A third elastic element 22, which can be a spring, is connected between the top end of the pressure rod 20 and the interior of the quick clamp 5. A fixing frame assembly is used to install the quick clamp 5. The first driving element 6 can be a motor, which is drivenly connected to the end of the fixed shaft 4 to drive the fixed shaft 4 to rotate. There are two sets of fixing frame assemblies, which are symmetrically distributed on the front and rear sides of the fixed shaft 4. The fixing frame assembly located on the rear side is... A fixed frame assembly is hinged to the top of the welding table 2 on the front side. The fixed frame assembly includes two fixed plates 23 and a mounting plate 24. The two fixed plates 23 on the rear side are fixedly connected to the top of the welding table 2. The bottom ends of the two fixed plates 23 on the front side are respectively hinged to the top of the welding table 2 via two connecting plates 29. The mounting plate 24 is inclinedly connected between the top ends of the two fixed plates 23. Multiple quick clamps 5 are evenly installed on the mounting plate 24. The multiple quick clamps 5 on the two mounting plates 24 are directly opposite each other, and the bottoms of the two quick clamps 5 in the directly opposite positions are... The ends are tilted towards each other. The fixing bracket assembly on the front side is provided with a pin 32 assembly that restricts the position of the mounting plate 24. The pin 32 assembly includes a connecting rod 30, a strip plate 31 and a pin 32. The connecting rod 30 is fixedly inserted between the bottoms of the two fixing plates 23 on the front side, and the connecting rod 30 is movably inserted into the connecting plate 29. The connecting plate 29 and the fixing plate 23 are provided with insertion holes at the same position, and the pin 32 is slidably inserted into the insertion holes at the same position on the connecting plate 29 and the fixing plate 23. The pin 32 is fixedly connected to the connecting rod 30 through the strip plate 31.

[0059] After the engine piping assembly is fitted onto the fixed shaft 4, the original pipe section and the replaced connector of the engine piping assembly can be hung on the fixed shaft 4 under the action of gravity and automatically remain coaxial. At this time, the original pipe section and connector of the engine piping assembly are spot welded using a welding torch 1, so that the original pipe section and connector can be temporarily connected together to form a whole. Then, the two quick clamps 5 on the two mounting plates 24 are pressed in turn. As the quick clamps 5 are pressed, the bottom end of the quick clamps 5 on the mounting plate 24 can gradually move towards the engine piping assembly. When the pressure rod 20 at the bottom of the quick clamp 5 contacts the surface of the engine piping assembly, the pressure rod 20 can move upward under the obstruction of the engine piping assembly and compress the third elastic element 22. The reaction force of the third elastic element 22 on the pressure rod 20 can keep the ball 21 at the bottom of the pressure rod 20 in contact with the surface of the engine piping assembly.

[0060] When multiple quick clamps 5, which are aligned with the overall length of the engine piping assembly, are pressed against the surface of the engine piping assembly, the engine piping assembly can be pressed against the fixed shaft 4 by the combined action of the multiple quick clamps 5 and the fixed shaft 4.

[0061] During welding, as the first driving component 6 drives the fixed shaft 4 to rotate in the opposite direction to the grinding roller 3, the engine pipeline assembly can rotate under the combined action of the fixed shaft 4 and the grinding roller 3. During the rotation of the engine pipeline assembly, the welding torch 1 can perform circumferential welding on the original pipe section and joint of the engine pipeline assembly, while the ball 21 at the bottom of the pressure rod 20 can roll along the surface of the engine pipeline assembly, so that the pressure rod 20 will not affect the rotation of the engine pipeline assembly.

[0062] Furthermore, by setting the front mounting bracket assembly to a deflectable state, when it is necessary to attach some engine pipe assemblies with larger diameters to the fixed shaft 4, the connecting rod 30 can be pulled, thereby driving the pin 32 to move out of the insertion hole on the connecting plate 29 and the fixed plate 23 through the strip plate 31. At this time, the front mounting plate 24 can be pushed forward and deflected downward, so that the front position of the fixed shaft 4 is not blocked by the mounting plate 24, thus facilitating the operation of installing large-diameter engine pipe assemblies onto the fixed shaft 4. After the large-diameter engine pipe assembly is installed onto the fixed shaft 4, the front mounting plate 24 can be pulled to deflect upward and reset, and finally the fixed plate 23 and the connecting plate 29 are fixed by the pin 32, thereby realizing the fixing operation of the front mounting plate 24.

[0063] like Figure 5 and Figure 6As shown, the vibration assembly includes: a vibration ring 7, a stop block 8, a fixing tube 9, an arc-shaped protrusion 10, an impact block 11, and a first elastic element 12. There are two vibration rings 7, symmetrically rotatably connected to both ends of the grinding roller 3, with the surface of the vibration rings 7 flush with the surface of the grinding roller 3, used to transmit vibration to the surface of the engine piping assembly. The stop block 8 is fixedly connected to the outer surface of the vibration ring 7 to restrict its movement. There are two fixing tubes 9, symmetrically fixedly connected to both ends of the grinding roller 3, with the fixing tubes 9 located on the vibration rings. At the inner axis of the 7th ring; there are multiple arc-shaped protrusions 10, which are evenly distributed in a ring on the inner wall of the vibrating ring 7, and the arc-shaped protrusions 10 are fixedly connected to the vibrating ring 7; there are multiple impact blocks 11, which are alternately distributed with the multiple arc-shaped protrusions 10. During the rotation of the grinding roller 3, the impact blocks 11 are used to impact the arc-shaped protrusions 10 to generate vibration; the first elastic element 12 can be a spring, which is connected between the fixed tube 9 and the impact block 11, and is used to fix the impact block 11 and drive it to deflect or reset.

[0064] With the addition of a vibration component, when the grinding roller 3 is pressed against the weld seam of the engine pipe assembly under the action of the lifting component, the two vibrating rings 7 can fit against the two sides of the surface to be welded on the engine pipe assembly. As the grinding roller 3 rotates, it can grind the weld seam of the engine pipe assembly, thereby cleaning the impurities at the weld seam and ensuring the subsequent welding quality. In addition, after welding is completed, the grinding roller 3 can also grind the weld scars at the weld seam of the engine pipe assembly, thereby ensuring the flatness and aesthetics of the welded part of the engine pipe assembly.

[0065] As the grinding roller 3 rotates, the two vibrating rings 7 can also rotate with the grinding roller 3 at first. When the stop block 8 on the vibrating ring 7 contacts the surface of the engine pipeline assembly, the vibrating ring 7 can remain stationary under the restriction of the stop block 8. At the same time, as the grinding roller 3 continues to rotate, the multiple impact blocks 11 on the surface of the fixed tube 9 can move in a ring with the grinding roller 3 under the drive of the fixed tube 9. During this process, when the impact block 11 contacts the arc protrusion 10 on the vibrating ring 7, the impact block 11 can vibrate in conjunction with the arc protrusion 10. When the vibration is transmitted to the surface of the engine pipeline assembly through the vibrating ring 7, the impurities and metal powder that are ground off can be quickly separated from the surface of the engine pipeline assembly under the action of the vibration force.

[0066] In addition, during the welding process, the vibration generated by the vibrating ring 7 can resonate with the engine piping assembly, thereby eliminating the welding stress of the engine piping assembly to a certain extent and improving the welding quality of the engine piping assembly.

[0067] like Figure 1 and Figure 5 As shown, the lifting assembly includes: a U-shaped frame 13, a pushing member 14, a sleeve plate 15, a drive shaft 16, a second drive member 17, and a second elastic member 18. The U-shaped frame 13 is disposed at the bottom of the welding table 2; the pushing member 14 is connected between the inner side of the U-shaped frame 13 and the welding table 2, and is used to drive the U-shaped frame 13 to move vertically; there are two sleeve plates 15, which are slidably sleeved at the top positions of both ends of the U-shaped frame 13, and the sleeve plates 15 are slidably inserted into the welding table 2; the drive shaft 16 rotates horizontally. The grinding roller 3 is slidably sleeved on the drive shaft 16 and inserted between the tops of the two sleeve plates 15; the second drive member 17 can be a motor, which is connected to the end of the drive shaft 16 to provide power to the drive shaft 16; the second elastic member 18 can be a spring, and there are two second elastic members 18. The two second elastic members 18 are respectively fixedly connected between the tops of the two ends of the U-shaped frame 13 and the inside of the sleeve plate 15, and are used to softly fit the grinding roller 3 to the surface of the engine pipeline assembly.

[0068] When the grinding roller 3 is used to grind the engine pipe assembly, as the pusher 14 gradually shortens, the U-shaped frame 13 can drive the two sleeves 15 and the grinding roller 3 mounted on the drive shaft 16 to move upward. When the grinding roller 3 contacts the bottom of the engine pipe assembly, the pressure of the engine pipe assembly on the grinding roller 3 causes the two sleeves 15 to move downward and compress the second elastic element 18. The reaction force of the second elastic element on the sleeves 15 can drive the grinding roller 3 on the drive shaft 16 and the vibration ring 7 to keep them close to the bottom of the engine pipe assembly.

[0069] As the first driving component 6 and the second driving component 17 are activated, the fixed shaft 4 and the driving shaft 16 can rotate in opposite directions under the action of the first driving component 6 and the second driving component 17, respectively. As the fixed shaft 4 and the driving shaft 16 rotate, the engine pipeline assembly can start to rotate under the friction of the fixed shaft 4 and the grinding roller 3, thereby completing the annular grinding operation on the surface of the engine pipeline assembly. During the rotation of the engine pipeline assembly, the welding torch 1 can automatically complete the welding operation on the engine pipeline assembly.

[0070] Furthermore, by providing a second elastic element 18, during the grinding of weld marks on the engine pipeline assembly, weld marks of different heights can press down on the grinding roller 3 by different distances in the vertical direction. As the grinding roller 3 moves down by different distances, the second elastic element 18 can be compressed to different degrees, thereby meeting the grinding requirements of the grinding roller 3 for weld marks of different heights.

[0071] This invention also provides a method for using an aircraft engine pipeline surface repair device, comprising the following steps:

[0072] Step 1: Install the engine piping assembly to be repaired onto the fixed shaft 4, and use the quick clamp 5 to press and fix the engine piping assembly.

[0073] Step 2: Move the welding torch 1 using the moving component to ensure it is aligned with the position to be welded on the engine piping assembly;

[0074] Step 3: Start the pusher 14, so that it drives the grinding roller 3 to fit against the engine pipeline assembly through the U-shaped frame 13;

[0075] Step 4: First, temporarily start the welding gun 1 to perform spot welding on the engine pipe assembly, thereby achieving initial fixation of the engine pipe assembly. Then, start the first drive component 6 and the second drive component 17, so that they drive the engine pipe assembly to rotate through the fixed shaft 4 and the drive shaft 16 respectively, thereby using the grinding roller 3 to grind the position to be welded and remove impurities on the engine pipe assembly.

[0076] Step 5: After the impurities on the engine piping assembly have been removed, start the welding torch 1, the first drive component 6 and the second drive component 17 to perform welding operations on the rotating engine piping assembly.

[0077] Step 6: After welding is completed, use the grinding roller 3 to grind the weld scars on the engine pipe assembly. After grinding, release the quick clamp 5 and then remove the welded engine pipe assembly from the fixed shaft 4.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A device for repairing the surface of an aircraft engine pipeline, characterized in that, include: Welding torch (1) is used to weld and repair the engine piping assembly to be repaired; A movable component is connected to the bottom of the welding torch (1) and is used to drive the welding torch (1) to adjust its own position according to the different welding positions; Welding station (2) for mounting the movable component; A mounting component used to secure the engine piping assembly to be repaired; The grinding assembly includes a grinding roller (3), a vibration assembly, and a lifting assembly. The grinding roller (3) is used to grind the engine pipeline assembly before and after welding by the welding gun (1). The vibration assembly is connected to the grinding roller (3) and is used to vibrate the engine pipeline assembly when the grinding roller (3) grinds the engine pipeline assembly. The grinding roller (3) is mounted on the lifting assembly and is used to press the grinding roller (3) against the surface of the engine pipeline assembly. The vibration assembly includes: Vibration ring (7) is symmetrically rotated and connected to both ends of grinding roller (3). The surface of vibration ring (7) is flush with the surface of grinding roller (3) and is used to transmit vibration to the surface of engine pipeline assembly. The stop block (8) is fixedly connected to the outer surface of the vibrating ring (7) and is used to restrict the vibrating ring (7); The fixed tube (9) is symmetrically fixed to both ends of the grinding roller (3) and located inside the vibrating ring (7); Arc-shaped protrusions (10) are evenly distributed in a ring on the inner wall of the vibrating ring (7), and the arc-shaped protrusions (10) are fixedly connected to the vibrating ring (7). The impact block (11) is used to impact the arc-shaped protrusion (10) to generate vibration during the rotation of the grinding roller (3); The first elastic element (12) is connected between the fixed tube (9) and the impact block (11) to fix the impact block (11) and drive it to deflect.

2. The aero-engine pipeline surface repair device according to claim 1, characterized in that, The fixing component includes: The fixed shaft (4) is inserted into the inside of the engine piping assembly to support the engine piping assembly; The quick clamp (5) is used to clamp and fix the engine pipeline assembly in conjunction with the fixed shaft (4), and the bottom end of the quick clamp (5) is connected to an elastic clamping mechanism. A mounting bracket assembly for mounting the quick clamp (5); The first driving component (6) is connected to the fixed shaft (4) and is used to drive the fixed shaft (4) to rotate.

3. The aero-engine pipeline surface repair device according to claim 2, characterized in that, The lifting component includes: A U-shaped frame (13) is provided at the bottom of the welding table (2); A pusher (14) is connected between the U-shaped frame (13) and the welding table (2) to drive the U-shaped frame (13) to move in the vertical direction; A sleeve plate (15) is connected to the U-shaped frame (13), and the sleeve plate (15) is inserted vertically into the welding table (2); A drive shaft (16) is connected to the sleeve plate (15) and is used to drive the grinding roller (3) to rotate; The second drive unit (17) is connected to the end of the drive shaft (16) and is used to provide power to the drive shaft (16); The second elastic element (18) is connected between the sleeve plate (15) and the U-shaped frame (13) for softly adhering the grinding roller (3) to the surface of the engine pipeline assembly.

4. The aero-engine pipeline surface repair device according to claim 3, characterized in that, The grinding roller (3) is also provided with a fixing member (19) for fixing the grinding roller (3) to the corresponding position on the surface of the drive shaft (16) according to the different grinding positions.

5. The aero-engine pipeline surface repair device according to claim 4, characterized in that: The elastic clamping mechanism includes a pressure rod (20), which is inserted into the bottom end of the quick clamp (5). A ball bearing (21) is installed at the bottom end of the pressure rod (20), and a third elastic element (22) is connected between the top end of the pressure rod (20) and the interior of the quick clamp (5).

6. The aero-engine pipeline surface repair device according to claim 5, characterized in that: The surface of the fixed shaft (4) is uniformly distributed with anti-slip texture along its axial direction, and the rotation direction of the fixed shaft (4) is opposite to the rotation direction of the drive shaft (16).

7. The aero-engine pipeline surface repair device according to claim 6, characterized in that: The number of the fixing frame assemblies is two sets, and the two sets of fixing frame assemblies are symmetrically distributed on the front and rear sides of the fixing shaft (4). The fixing frame assembly located on the rear side is fixedly connected to the top of the welding table (2), and the fixing frame assembly located on the front side is hinged to the top of the welding table (2). The fixing frame assembly includes two fixing plates (23) and one mounting plate (24). The mounting plate (24) is obliquely connected between the tops of the two fixing plates (23), the quick clamp (5) is mounted on the mounting plate (24), and the fixing frame assembly located on the front side is provided with a pin (32) assembly to restrict the position of the mounting plate (24).

8. A method of using the aircraft engine pipeline surface repair device according to claim 7, characterized in that: Includes the following steps: Step 1: Install the engine piping assembly to be repaired onto the fixed shaft (4), and use the quick clamp (5) to press and fix the engine piping assembly; Step 2: Move the welding torch (1) by moving the component so that it is aligned with the position to be welded on the engine piping assembly; Step 3: Start the pusher (14) so ​​that it drives the grinding roller (3) to fit against the engine pipeline assembly through the U-shaped frame (13); Step 4: First, temporarily start the welding gun (1) to perform spot welding on the engine pipeline assembly, thereby achieving the initial fixation of the engine pipeline assembly. Then, start the first drive component (6) and the second drive component (17) to drive the engine pipeline assembly to rotate through the fixed shaft (4) and the drive shaft (16) respectively, thereby using the grinding roller (3) to grind the position to be welded and remove impurities on the engine pipeline assembly. Step 5: After the impurities on the engine piping assembly have been removed, start the welding torch (1), the first drive component (6), and the second drive component (17) to perform welding operations on the rotating engine piping assembly. Step 6: After welding is completed, use a grinding roller (3) to grind the weld scars on the engine piping assembly. After grinding, release the quick clamp (5) and then remove the welded engine piping assembly from the fixed shaft (4).

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