Aero-engine pipeline surface repairing device and method

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to an aero-engine pipeline surface repairing device and method.The repairing device comprises a welding gun used for conducting welding repairing on an engine pipeline assembly to be repaired; the moving assembly is connected to the bottom of the welding gun and used for driving the welding gun to adjust the position of the welding gun according to different welding positions; and the welding table is used for installing the moving assembly. By arranging the vibration assembly, in the grinding process, the impact block can be matched with the cambered surface protrusion to generate vibration, when vibration is transmitted to the surface of the engine pipeline assembly, ground impurities and metal powder can be rapidly separated from the surface of the engine pipeline assembly under the action of vibration force, and in addition, in the welding process, the welding efficiency is improved. The vibration generated by the vibration ring can also generate resonance with the engine pipeline assembly, so that the welding stress of the engine pipeline assembly is eliminated to a certain extent, and the welding quality of the engine pipeline assembly is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding equipment, and in particular relates to a device and method for repairing the surface of an aero-engine pipeline. Background Art

[0002] Aircraft engine piping, a crucial component of aircraft engines, is used to transport oil and gas during operation. Due to the high temperatures, vibrations, and complex thermal stresses these piping experiences over time, cracks, wear, and other defects can develop on the pipe joints and walls. This necessitates joint repair. To ensure repair quality, severe fractures in the joints require cutting and welding new ones.

[0003] Unlike conventional metal pipe welding, aircraft engine piping operates in a more complex environment, requiring reliable welding quality. However, when welding aircraft engine piping using existing welding equipment, welding stress may occur at the weld. If this stress cannot be released, it may cause the weld to break during subsequent use.

[0004] Therefore, it is necessary to invent an aircraft engine pipeline surface repair device and method to solve the above problems. Summary of the Invention

[0005] In response to the above problems, the present invention provides an aircraft engine pipeline surface repair device and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an aircraft engine pipeline surface repair device, comprising a welding gun for performing welding repair on an engine pipeline component to be repaired;

[0007] A moving assembly connected to the bottom of the welding gun, used to drive the welding gun to adjust its position according to different welding positions;

[0008] a welding table for mounting the mobile assembly;

[0009] A fixing assembly, used for fixing the engine pipe assembly to be repaired;

[0010] The grinding assembly includes a grinding roller, a vibration assembly and a lifting assembly. The grinding roller is used to perform grinding treatment on the engine pipeline assembly before and after the welding gun welds the engine pipeline assembly. The vibration assembly is connected to the grinding roller and is used to vibrate the engine pipeline assembly when the grinding roller grinds the engine pipeline assembly. The grinding roller is installed on the lifting assembly and is used to make the grinding roller close to the surface of the engine pipeline assembly.

[0011] Furthermore, the fixing assembly includes:

[0012] A fixed shaft is inserted into the inner side of the engine pipe assembly to support the engine pipe assembly;

[0013] A quick clamp is used to compress and fix the engine pipe assembly, and the bottom end of the quick clamp is connected to an elastic clamping mechanism;

[0014] A fixing frame assembly, used for mounting the quick clamp;

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

[0016] Furthermore, the vibration component includes:

[0017] a vibration ring connected to the grinding roller and used to transmit vibration to the surface of the engine pipe assembly;

[0018] a stopper connected to the vibration ring and used to limit the vibration ring;

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

[0020] A curved protrusion connected to the inner wall of the vibration ring;

[0021] An impact block, used for impacting the cambered protrusions to generate vibrations during the rotation of the grinding roller;

[0022] The first elastic member is connected between the fixing tube and the impact block, and is used for fixing the impact block and driving it to deflect.

[0023] Furthermore, the lifting assembly includes:

[0024] A U-shaped frame, arranged at the bottom of the welding table;

[0025] A pushing member, connected between the U-shaped frame and the welding table, for driving the U-shaped frame to move in a vertical direction;

[0026] A sleeve plate is connected to the U-shaped frame, and the sleeve plate is plugged into the welding table in a vertical direction;

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

[0028] a second driving member connected to the end of the driving shaft and used to provide power to the driving shaft;

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

[0030] Furthermore, the grinding roller is provided with a fixing piece for fixing the grinding roller to a corresponding position on the surface of the driving shaft according to different grinding positions.

[0031] Furthermore, the elastic pressing mechanism includes a pressure rod, which is plugged into the bottom end of the quick clamp. A ball is installed at the bottom end of the pressure rod, and a third elastic member is connected between the top end of the pressure rod and the inside of the quick clamp.

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

[0033] Furthermore, the number of the fixing frame assemblies is two, and the two groups of fixing frame assemblies are symmetrically distributed on the front and rear sides of the fixed axis. The fixing frame assembly on the rear side is fixedly connected to the top of the welding table, and the fixing frame assembly 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 connected obliquely between the top ends of the two fixing plates, the quick clamp is mounted on the mounting plate, and a latch assembly for limiting the position of the mounting plate is provided on the fixing frame assembly located on the front side.

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

[0036] Step 1: Install the engine pipe assembly to be repaired onto the fixed shaft and use a quick clamp to tighten and secure the engine pipe assembly;

[0037] Step 2: Move the welding gun by moving the assembly so that it is aligned with the position to be welded on the engine pipe assembly;

[0038] Step 3: Start the pusher so that it drives the grinding roller to fit the engine pipe assembly through the U-shaped frame;

[0039] Step 4: First, temporarily start the welding gun to perform a spot welding operation on the engine pipe assembly, thereby achieving preliminary fixation of the engine pipe assembly, and then start the first driving member and the second driving member to respectively drive the engine pipe assembly to rotate via the fixed shaft and the driving shaft, so as to use the grinding roller to grind the position to be welded to remove impurities on the engine pipe assembly;

[0040] Step 5: After the impurities on the engine pipe assembly are removed, the welding gun, the first driving member, and the second driving member are started to perform a welding operation on the rotating engine pipe assembly;

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

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

[0043] 1. The present invention is provided with a vibration assembly. During the grinding process, the impact block can cooperate with the arc-surface protrusion to generate vibration. When the vibration is transmitted to the surface of the engine pipe assembly, the impurities and metal powder polished 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, thereby improving the welding quality of the engine pipe assembly.

[0044] 2. The present invention is provided with a grinding roller. Before welding, the grinding roller can be used to grind the position to be welded on the surface of the engine pipe assembly to keep the weld clean, thereby improving the subsequent welding quality. After welding, the grinding roller can also be used to grind the weld scar at the weld of the engine pipe assembly, thereby ensuring that the weld of the engine pipe assembly is smooth and beautiful.

[0045] 3. The present invention provides a deflectable state for the fixing frame assembly located at the front side. When it is necessary to sleeve some engine pipe assemblies with larger pipe diameters onto the fixed shaft, the connecting rod can be pulled to drive the pins to move out of the sockets on the connecting plate and the fixed plate through the strip plate. At this time, the mounting plate located at the front side can be pushed forward and deflected downward, so that the front side of the fixed shaft is not blocked by the mounting plate, thereby facilitating the operation of installing the large-diameter engine pipe assembly onto the fixed shaft. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0048] Figure 3 It is a three-dimensional schematic diagram of the structure of the fixed shaft, mounting plate, latch and quick clamp in the present invention;

[0049] Figure 4 is a three-dimensional cross-sectional view of the quick clamp of the present invention;

[0050] Figure 5 It is a three-dimensional schematic diagram of the structures of the grinding roller, fixing member, vibration ring and U-shaped plate in the present invention;

[0051] Figure 6 It is a three-dimensional schematic diagram of the structures of the grinding roller, vibration ring, impact block and arc-surface protrusion in the present invention.

[0052] In the figure: 1. welding gun; 2. welding table; 3. grinding roller; 4. fixed shaft; 5. quick clamp; 6. first driving member; 7. vibrating ring; 8. stopper; 9. fixed tube; 10. cambered protrusion; 11. impact block; 12. first elastic member; 13. U-shaped frame; 14. pushing member; 15. sleeve plate; 16. driving shaft; 17. second driving member; 18. second elastic member; 19. fixing member; 20. pressure rod; 21. ball bearing; 22. third elastic member; 23. fixing plate; 24. mounting plate; 25. movable plate; 26. limiting rod; 27. screw; 28. third driving member; 29. ​​connecting plate; 30. connecting rod; 31. strip plate; 32. latch. DETAILED DESCRIPTION

[0053] In order to make the purpose, 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] The present invention provides Figures 1 to 6The shown device is an aircraft engine pipeline surface repair device, comprising a welding gun 1, a moving assembly, a welding table 2 and a grinding assembly. The welding gun 1 is used to perform welding repair on the engine pipeline assembly to be repaired. The engine pipeline assembly mainly comprises an original pipe section and a joint with a mounting hole; the moving assembly is connected to the bottom of the welding gun 1, and is used to drive the welding gun 1 to adjust its own position according to different welding positions. The moving assembly comprises a moving plate 25, a limiting rod 26, a screw 27 and a third driving member 28. The moving plate 25 is connected to the bottom of the welding gun 1. There are two limiting rods 26. The two limiting rods 26 are horizontally slidable and inserted between the two sides of the moving plate 25. The screw 27 is threaded and inserted between the two sides of the moving plate 25, and both ends of the screw 27 and the limiting rod 26 are rotatably sleeved with the same first fixed block. The first fixed block is fixedly connected to the top of the welding table 2. The third driving member 28 can be a motor. The third driving member 28 is connected to the screw One end of the rod 27; the welding table 2 is used to install the moving assembly; the fixing assembly is used to press and fix the engine pipeline 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, and the middle section of the grinding roller 3 is the grinding section. 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 installed on the lifting assembly and is used to keep the grinding roller 3 close to the surface of the engine pipeline assembly; a fixing part 19 is also provided on the grinding roller 3, and the number of the fixing parts 19 is two, and the two fixing parts 19 are symmetrically arranged on both sides of the grinding section of the grinding roller 3. The fixing part 19 can be a screw, and the fixing part 19 is threadedly inserted into the grinding roller 3, and is used to fix the grinding roller 3 to the corresponding position on the surface of the drive shaft 16 according to different grinding positions;

[0055] When welding the engine pipe assembly, the original pipe section and the connector of the engine pipe assembly are sleeved on the fixed shaft 4 in sequence. At this time, the original pipe section of the engine pipe assembly and the replaced connector can be hung on the fixed shaft 4 under the action of gravity and automatically remain coaxial. At this time, the third driving member 28 is started, so that it drives the movable plate 25 and the welding gun 1 on its top to move along the direction of the limit rod 26 to the position where the engine pipe assembly is to be welded through the screw 27. Then, the welding gun 1 is briefly started to perform spot welding on the original pipe section and the connector of the engine pipe assembly, so that the original pipe section and the connector can be temporarily connected together to form a whole. Then, the fixed assembly is used to sleeve the fixed shaft 4 is pressed and fixed, and when the engine pipeline assembly is fixed, first loosen the fixing piece 19 on the grinding roller 3, so as to move the grinding roller 3 to a position facing the position to be welded of the engine pipeline assembly, and then tighten the fixing piece 19 to fix the position of the grinding roller 3, and then start the lifting assembly to drive the grinding roller 3 to move upward and keep it in contact with the position to be welded of the engine pipeline assembly, and then start the fixing assembly and the grinding roller 3, so as to drive the engine pipeline assembly to rotate while using the grinding roller 3 to grind the position to be welded on the surface of the engine pipeline assembly, so as to keep the welding position clean, thereby improving the subsequent welding quality;

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

[0057] During the grinding process of the grinding roller 3, the vibration component can generate vibration, and when the vibration is transmitted to the surface of the engine pipe assembly, the impurities and metal powder polished 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 component can also resonate with the engine pipe assembly, thereby eliminating the welding stress of the engine pipe assembly to a certain extent, thereby improving the welding quality of the engine pipe assembly.

[0058] like Figures 1 to 4As shown, the fixing assembly includes: a fixed shaft 4, a quick clamp 5, a fixing frame assembly and a first driving member 6. The fixed shaft 4 is inserted into the inner side of the engine pipe assembly and is used to support the engine pipe assembly. A second fixing block is rotatably sleeved on the fixed shaft 4, and the second fixing block is fixedly connected to the top of the welding table 2. The surface of the fixed shaft 4 is evenly distributed with anti-slip grooves along its axial direction, and the rotation direction of the fixed shaft 4 is opposite to the rotation direction of the drive shaft 16; there are multiple quick clamps 5, and the quick clamps 5 are used to press and fix the engine pipe assembly, and the bottom end of the quick clamp 5 is connected with 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 21 is installed at the bottom end of the pressure rod 20. A third elastic member 22 is connected between the top end of the pressure rod 20 and the inside of the quick clamp 5. The third elastic member 22 can be a spring; the fixing frame assembly is used to install the quick clamp 5; the first driving member 6 can be a motor, and the first driving member 6 is transmission-connected to the end of the fixed shaft 4 to drive the fixed shaft 4 to rotate; the number of fixing frame assemblies is two groups, and the two groups of fixing frame assemblies are symmetrically distributed on the front and rear sides of the fixed shaft 4, and the fixing frame assembly located on the rear side The fixing frame assembly is fixedly connected to the top of the welding table 2, and the fixing frame assembly at the front side is hinged to the top of the welding table 2. The fixing frame assembly includes two fixing plates 23 and a mounting plate 24. The two fixing plates 23 at the rear side are fixedly connected to the top of the welding table 2, and the bottom ends of the two fixing plates 23 at the front side are hinged to the top of the welding table 2 through two connecting plates 29. The mounting plate 24 is obliquely connected between the top ends of the two fixing plates 23. A plurality of quick clamps 5 are evenly installed on the mounting plates 24. The multiple quick clamps 5 on the two mounting plates 24 are aligned one by one, and the bottom ends of the two quick clamps 5 at the aligned positions are aligned. The ends are inclined in the direction of approaching each other, and a pin 32 component for limiting the position of the mounting plate 24 is provided on the fixing frame assembly on the front side. The pin 32 component 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 located on the front side, and the connecting rod 30 is movably inserted into the connecting plate 29. Sockets are provided at the same positions on the connecting plate 29 and the fixing plate 23, and the pins 32 are slidably inserted into the sockets at the same positions of the connecting plate 29 and the fixing plate 23. The pins 32 are fixedly connected to the connecting rod 30 through the strip plate 31.

[0059] After the engine pipe assembly is sleeved on the fixed shaft 4, the original pipe section of the engine pipe assembly and the replaced joint can be hung on the fixed shaft 4 under the action of gravity and automatically maintain coaxiality. At this time, the welding gun 1 is used to spot-weld the original pipe section and the joint of the engine pipe assembly, so that the original pipe section and the joint can be temporarily connected together to form a whole. Then, the two quick clamps 5 in the opposite positions on the two mounting plates 24 are pressed in turn. As the quick clamps 5 are pressed, the bottom ends of the quick clamps 5 located on the mounting plates 24 can gradually move toward the direction close to the engine pipe assembly, and when the pressure rod 20 at the bottom end of the quick clamp 5 contacts the surface of the engine pipe assembly, the pressure rod 20 can move upward under the obstruction of the engine pipe assembly and compress the third elastic member 22, and the reaction force of the third elastic member 22 on the pressure rod 20 can make the ball 21 at the bottom end of the pressure rod 20 keep in contact with the surface of the engine pipe assembly;

[0060] When the multiple quick clamps 5 that are aligned with the entire length of the engine pipe assembly are pressed against the surface of the engine pipe assembly, the engine pipe assembly can be pressed against the fixed shaft 4 under the cooperation of the multiple quick clamps 5 and the fixed shaft 4;

[0061] During welding, as the first driving member 6 drives the fixed shaft 4 and the grinding roller 3 to rotate in opposite directions, the engine pipe assembly can rotate under the joint action of the fixed shaft 4 and the grinding roller 3. During the rotation of the engine pipe assembly, the welding gun 1 can perform a circular welding operation on the original pipe section and the joint of the engine pipe assembly, and the ball 21 at the bottom end of the pressure rod 20 can roll against the surface of the engine pipe assembly, so that the pressure rod 20 will not affect the rotation of the engine pipe assembly.

[0062] In addition, by setting the fixing frame assembly on the front side to a deflectable state, when some engine pipe assemblies with larger pipe diameters need to be connected to the fixed shaft 4, the connecting rod 30 can be pulled, thereby driving the pin 32 to move out of the sockets on the connecting plate 29 and the fixing plate 23 through the strip plate 31. At this time, the mounting plate 24 on the front side 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, thereby facilitating the operation of installing the large-diameter engine pipe assembly on the fixed shaft 4. After the large-diameter engine pipe assembly is installed on the fixed shaft 4, the mounting plate 24 on the front side can be pulled to deflect it upward and reset, and finally the fixing plate 23 and the connecting plate 29 are fixed by the pin 32, thereby realizing the fixing operation of the mounting plate 24 on the front side.

[0063] like Figure 5 and Figure 6As shown, the vibration assembly includes: a vibration ring 7, a stopper 8, a fixed tube 9, a curved protrusion 10, an impact block 11 and a first elastic member 12. There are two vibration rings 7, which are symmetrically connected to the two ends of the grinding roller 3, and the surface of the vibration ring 7 is flush with the surface of the grinding roller 3, which is used to transmit the vibration to the surface of the engine pipeline assembly; the stopper 8 is fixedly connected to the outer surface of the vibration ring 7 to limit the vibration ring 7; there are two fixed tubes 9, which are symmetrically fixedly connected to the two ends of the grinding roller 3, and the fixed tubes 9 are located on the vibration ring 7 inner axis; the number of cambered protrusions 10 is multiple, and the multiple cambered protrusions 10 are evenly distributed in an annular manner on the inner wall of the vibration ring 7, and the cambered protrusions 10 are fixedly connected to the vibration ring 7; the number of impact blocks 11 is multiple, and the multiple impact blocks 11 and the multiple cambered protrusions 10 are alternately distributed, and the impact blocks 11 are used to impact the cambered protrusions 10 to generate vibration during the rotation of the grinding roller 3; the first elastic member 12 can be a spring, and the first elastic member 12 is connected between the fixed tube 9 and the impact block 11, for fixing the impact block 11 and driving it to deflect or reset;

[0064] By providing a vibration component, when the grinding roller 3 is in close contact with the weld of the engine pipe assembly under the action of the lifting component, the two vibration rings 7 can be fitted to the surface positions on both sides of the engine pipe assembly where welding is to be done. As the grinding roller 3 rotates, the grinding roller 3 can grind the weld of the engine pipe assembly, thereby grinding away impurities at the weld of the engine pipe assembly and ensuring the quality of subsequent welding. In addition, after welding is completed, the grinding roller 3 can also grind the weld scar at the weld of the engine pipe assembly, thereby ensuring the smoothness and beauty of the weld of the engine pipe assembly.

[0065] As the grinding roller 3 rotates, the two vibration rings 7 can also rotate with the grinding roller 3 at the beginning. When the stopper 8 on the vibration ring 7 contacts the surface of the engine pipe assembly, the vibration ring 7 can remain stationary under the restriction of the stopper 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 make circular motion together with the grinding roller 3 under the drive of the fixed tube 9. In this process, when the impact blocks 11 contact the arc-surface protrusions 10 on the vibration ring 7, the impact blocks 11 can cooperate with the arc-surface protrusions 10 to generate vibrations. When the vibration is transmitted to the surface of the engine pipe assembly through the vibration ring 7, the impurities and metal powder polished off can be quickly separated from the surface of the engine pipe assembly under the action of the vibration force.

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

[0067] like Figure 1 and Figure 5 As shown, the lifting assembly includes: a U-shaped frame 13, a pusher 14, a sleeve 15, a drive shaft 16, a second drive member 17 and a second elastic member 18. The U-shaped frame 13 is arranged at the bottom of the welding table 2; the pusher 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 in the vertical direction; the number of sleeves 15 is two, and the two sleeves 15 are respectively slidably sleeved on the top positions of the two ends of the U-shaped frame 13, and the sleeves 15 are slidably inserted into the welding table 2; the drive shaft 16 rotates horizontally The second driving member 17 can be a motor, which is connected to the end of the driving shaft 16 to provide power for the driving shaft 16; the second elastic member 18 can be a spring, and the number of the second elastic members 18 is two, and the two second elastic members 18 are respectively fixedly connected between the top of the two ends of the U-shaped frame 13 and the inside of the sleeve 15, so as 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 sleeve plates 15 and the grinding roller 3 installed 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 sleeve plates 15 to move downward and compress the second elastic member 18, and the reaction force of the second elastic member on the sleeve plate 15 can drive the grinding roller 3 on the drive shaft 16 and the vibration ring 7 to maintain close contact with the bottom of the engine pipe assembly;

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

[0070] In addition, by providing a second elastic member 18, during the process of grinding the weld scars of the engine pipe assembly, weld scars of different heights can press the grinding roller 3 downward by different distances in the vertical direction. As the grinding roller 3 moves downward by different distances, the second elastic member 18 can be compressed to different degrees, thereby meeting the grinding requirements of the grinding roller 3 for weld scars of different heights.

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

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

[0073] Step 2: Move the welding gun 1 by moving the assembly so that it is aligned with the position to be welded on the engine pipe assembly;

[0074] Step 3: Start the pusher 14 to drive the grinding roller 3 to fit the engine pipe assembly through the U-shaped frame 13;

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

[0076] Step 5: After the impurities on the engine pipe assembly are removed, the welding gun 1, the first driving member 6 and the second driving member 17 are started to perform a welding operation on the rotating engine pipe assembly;

[0077] Step 6: After welding is completed, use the grinding roller 3 to grind the weld scar of 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, rather than to limit the same.

Claims

1. An aircraft engine pipeline surface repair device, characterized in that: include: A welding gun (1) is used for welding and repairing the engine pipeline assembly to be repaired; A moving component connected to the bottom of the welding gun (1) and used to drive the welding gun (1) to adjust its position according to different welding positions; a welding table (2) for mounting the mobile assembly; A fixing assembly, used for fixing the engine pipe assembly to be repaired; A grinding assembly comprises a grinding roller (3), a vibration assembly and a lifting assembly, wherein the grinding roller (3) is used to perform grinding treatment before and after welding the engine pipeline assembly 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, and the grinding roller (3) is installed on the lifting assembly and is used to press the grinding roller (3) against the surface of the engine pipeline assembly.

2. The aircraft engine pipeline surface repair device according to claim 1, characterized in that: The fixing assembly includes: A fixed shaft (4) is plugged into the inner side of the engine pipe assembly and is used to support the engine pipe assembly; A quick clamp (5) is used to cooperate with the fixed shaft (4) to compress and fix the engine pipeline assembly, and the bottom end of the quick clamp (5) is connected to an elastic pressing mechanism; A fixing frame assembly for mounting the quick clamp (5); The first driving member (6) is connected to the fixed shaft (4) and is used to drive the fixed shaft (4) to rotate.

3. The aircraft engine pipeline surface repair device according to claim 2, characterized in that: The vibration assembly comprises: a vibration ring (7) connected to the grinding roller (3) for transmitting vibration to the surface of the engine pipe assembly; a stopper (8), connected to the vibration ring (7), and used for limiting the vibration ring (7); A fixed tube (9) connected to the end of the grinding roller (3) and located inside the vibration ring (7); A curved protrusion (10) connected to the inner wall of the vibration ring (7); An impact block (11) is used for impacting the arc-surface protrusion (10) to generate vibration during the rotation of the grinding roller (3); The first elastic member (12) is connected between the fixing tube (9) and the impact block (11) and is used to fix the impact block (11) and drive it to deflect.

4. The aircraft engine pipeline surface repair device according to claim 3, characterized in that: The lifting assembly comprises: A U-shaped frame (13) is arranged at the bottom of the welding table (2); A pushing member (14) is connected between the U-shaped frame (13) and the welding table (2) and is used to drive the U-shaped frame (13) to move in a vertical direction; A sleeve plate (15) is connected to the U-shaped frame (13), and the sleeve plate (15) is plugged into the upper portion of the welding table (2) in a vertical direction; A driving shaft (16) is connected to the sleeve plate (15) and is used to drive the grinding roller (3) to rotate; a second driving member (17), connected to the end of the driving shaft (16), and used to provide power to the driving shaft (16); The second elastic member (18) is connected between the sleeve plate (15) and the U-shaped frame (13) and is used to softly fit the grinding roller (3) to the surface of the engine pipeline assembly.

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

6. The aircraft engine pipeline surface repair device according to claim 5, characterized in that: The elastic pressing mechanism includes a pressing rod (20), the pressing rod (20) is plugged into the bottom end of the quick clamp (5), a ball (21) is installed at the bottom end of the pressing rod (20), and a third elastic member (22) is connected between the top end of the pressing rod (20) and the inside of the quick clamp (5).

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

8. The aircraft engine pipeline surface repair device according to claim 7, characterized in that: There are two groups of fixing frame assemblies, which 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 a mounting plate (24). The mounting plate (24) is connected obliquely between the top ends of the two fixing plates (23), the quick clamp (5) is mounted on the mounting plate (24), and a latch (32) assembly for limiting the position of the mounting plate (24) is provided on the fixing frame assembly located on the front side.

9. A method for using the aircraft engine pipeline surface repair device according to claim 8, characterized in that: The following steps are involved: Step 1: Install the engine pipe assembly to be repaired onto the fixed shaft (4), and use the quick clamp (5) to press and fix the engine pipe assembly; Step 2: The welding gun (1) is moved by the moving assembly so as to be aligned with the position to be welded on the engine pipe assembly; Step 3: Start the pusher (14) to drive the grinding roller (3) to fit the engine pipe assembly through the U-shaped frame (13); Step 4: First, temporarily start the welding gun (1) to perform a spot welding operation on the engine pipe assembly, thereby achieving preliminary fixation of the engine pipe assembly, and then start the first driving member (6) and the second driving member (17) to respectively drive the engine pipe assembly to rotate through the fixed shaft (4) and the driving shaft (16), so as to use the grinding roller (3) to grind the position to be welded to remove impurities on the engine pipe assembly; Step 5: After the impurities on the engine pipe assembly are removed, the welding gun (1), the first driving member (6) and the second driving member (17) are started to perform a welding operation on the rotating engine pipe assembly; Step 6: After welding is completed, use a grinding roller (3) to grind the weld scar of the engine pipe assembly. After grinding is completed, release the quick clamp (5) and then remove the welded engine pipe assembly from the fixed shaft (4).

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