An engine turbine blade welding repair device

Abstract

The utility model discloses an engine turbine working blade welding repair device, including setting in the laser cladding welding mechanical arm and movable clamping assembly of welding protection box inside, the top clamping of movable clamping assembly has the turbine of being repaired, the laser cladding welding mechanical arm welding repair cracks blade of turbine of being repaired appears, the main body of movable clamping assembly is set to movable trolley, the top fixed mounting of movable trolley has the lift hydraulic cylinder, the telescopic end top of lift hydraulic cylinder rotates and is installed to have the rotary connection disc. The utility model discloses with movable trolley as the main body, with movable clamping assembly of cross clamping frame as the clamping bearing structure to the turbine of being repaired fixed clamping, and one clamping can carry out all processing in the welding process to the turbine of being repaired, reduces the repair difficulty of turbine of being repaired, avoids repeatedly hoisting, transfer, clamping, improves the welding repair efficiency of turbine blade.

Description

Technical Field

[0001] This utility model relates to the technical field of welding repair devices, and in particular to a welding repair device for engine turbine working blades. Background Technology

[0002] In existing technology, an engine is a machine that converts other forms of energy into mechanical energy. Turbine blades are an important component of the turbine section in a gas turbine engine. The high-speed rotating blades are responsible for drawing high-temperature, high-pressure gas into the combustor to sustain engine operation. When turbine blades develop cracks, they need to be repaired by welding. Heat treatment is required before and after welding. After preheating, a waiting period is necessary before welding can proceed.

[0003] In practical use, existing turbine blade welding repair equipment makes turbine handling relatively inconvenient due to the overall weight of the turbine and the influence of the turbine blades. It requires the use of hoisting or transfer machinery. Furthermore, the turbine blades need to be heat-treated before and after welding repair. The use of hoisting or transfer machinery makes it difficult to install the turbine onto the fixture assembly of the welded structure, which brings great inconvenience to the welding of turbine blades. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a welding repair device for engine turbine working blades.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A welding repair device for engine turbine blades includes a laser cladding welding robotic arm and a mobile clamping assembly housed inside a welding protective box. The top of the mobile clamping assembly holds the turbine to be repaired, and the laser cladding welding robotic arm welds and repairs the cracked blades of the turbine to be repaired. The main body of the mobile clamping assembly is a mobile trolley, and a lifting hydraulic cylinder is fixedly installed at the top of the mobile trolley. A rotating connecting plate is rotatably installed at the top of the telescopic end of the lifting hydraulic cylinder. A mounting bearing plate is fixedly installed at the top of the rotating connecting plate, and a cross clamping frame is fixedly connected to the top of the mounting bearing plate. A transmission groove is formed at the top of the support arm of the cross clamping frame, and a transmission slider is slidably installed inside the transmission groove. A bearing connecting arm is fixedly connected to the top of the transmission slider, and a clamping pin is fixedly connected to one end of the bearing connecting arm. Multiple clamping pins are inserted into the wheel disc of the turbine to be repaired.

[0007] As a further improvement of this utility model: the top of the cross clamp is provided with a mating groove, and a rotating connecting column is rotatably installed on the bottom wall of the mating groove.

[0008] As a further embodiment of this utility model: a bevel gear two is fixedly installed in the middle of the outer wall of the rotating connecting column, and a rotating limiting frame is rotatably sleeved at the top of the outer wall of the rotating connecting column.

[0009] As a further embodiment of this utility model: a transmission threaded rod that is threadedly connected to the transmission slider is rotatably installed inside the transmission groove, one end of the transmission threaded rod extends into the mating groove, and a bevel gear one that meshes with bevel gear two is fixedly installed at its extended end.

[0010] As a further improvement of this utility model: the upper surface of the bearing connecting arm is provided with a rotating mounting groove, and multiple bearing rollers for supporting the turbine to be repaired are rotatably mounted at equal intervals inside the rotating mounting groove.

[0011] As a further embodiment of this utility model: the top of the mobile trolley is fixedly connected to a positioning mounting cylinder for mounting a lifting hydraulic cylinder, and a rotating connecting ring is rotatably mounted on the outer wall of the positioning mounting cylinder.

[0012] As a further embodiment of this utility model: a driven bevel gear is fixedly installed on the outer wall of the rotating connecting ring, and a driving bevel gear is meshed with the outer wall of the driven bevel gear.

[0013] As a further embodiment of this utility model: a drive motor is fixedly installed on the top of the mobile trolley, and the drive bevel gear is fixedly installed on the end of the output shaft of the drive motor.

[0014] As a further improvement of this utility model: multiple limiting slide cylinders are fixedly connected at equal intervals to the top of the rotating connecting ring, and a connecting slide column fixedly connected to the rotating connecting disc is slidably installed inside the limiting slide cylinder.

[0015] Compared with the prior art, this utility model provides a welding repair device for engine turbine working blades, which has the following beneficial effects:

[0016] This engine turbine blade welding repair device uses a mobile clamping assembly with a mobile trolley as the main body and a cross clamping frame as the clamping and bearing structure to fix and clamp the turbine to be repaired. The entire welding process of the turbine to be repaired can be carried out in one clamping, which reduces the repair difficulty of the turbine to be repaired, avoids repeated hoisting, transportation and clamping, and improves the welding repair efficiency of turbine blades.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the overall assembly of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the overall assembly of this utility model.

[0020] Figure 3 This utility model Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0021] Figure 4 This utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0022] In the diagram: 1. Welding protective box; 2. Laser cladding welding robotic arm; 3. Positioning and moving groove; 4. Moving trolley; 5. Positioning mounting cylinder; 6. Lifting hydraulic cylinder; 7. Rotating connecting plate; 8. Mounting bearing plate; 9. Turbine to be repaired; 10. Motor base; 11. Drive motor; 12. Bearing bearing; 13. Rotating connecting ring; 14. Driven bevel gear; 15. Driven bevel gear; 16. Positioning chuck; 17. Positioning block; 18. Limiting slide cylinder; 19. 20. Connecting slide column; 21. Fixed ear plate; 22. Limiting baffle; 23. Fixed clamping arm; 24. Connecting clamping plate; 25. Cross clamping bracket; 26. Mating groove; 27. Transmission slide groove; 28. Transmission threaded rod; 29. ​​Bevel gear one; 30. Transmission slider; 31. Bearing connecting arm; 32. Rotating mounting groove; 33. Bearing roller; 34. Clamping column; 35. Rotating connecting column; 36. Rotating limiting bracket; 37. Bevel gear two; 38. T-shaped control handle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] A welding repair device for engine turbine working blades, such as Figures 1 to 4 As shown, it includes a laser cladding welding robotic arm 2 and a mobile clamping assembly set inside the welding protective box 1. The top of the mobile clamping assembly is clamped with a turbine 9 to be repaired. The laser cladding welding robotic arm 2 welds and repairs the cracked blades of the turbine 9 to be repaired. The structure of the laser cladding welding robotic arm 2 is based on the patent with application number 202310484856.X.

[0025] The main body of the mobile clamping assembly is a mobile trolley 4. Two sets of rollers are fixedly installed at the bottom of the mobile trolley 4. Two positioning and moving grooves 3 are opened on the inner wall of the bottom of the welding protection box 1. The positioning and moving grooves 3 penetrate through the front box of the welding protection box 1, making it easy for the mobile trolley 4 to enter and exit the welding protection box 1.

[0026] Welding protection box 1 is fully enclosed, with a rotating door on the front and the top of the box not shown.

[0027] A connecting plate 23 is fixedly connected to the top of the back of the mobile trolley 4. Fixed clamping arms 22 are clamped on both sides of the connecting plate 23. A limiting baffle 21 is fixedly connected to the back of the fixed clamping arms 22. An inverted T-shaped frame plate is integrally formed on the back of the limiting baffle 21. The T-shaped frame plate is fixedly installed on the bottom inner wall of the welding protection box 1.

[0028] The top of the mobile trolley 4 is integrally formed with a positioning mounting cylinder 5. A lifting hydraulic cylinder 6 is fixedly installed inside the positioning mounting cylinder 5. A rotating connecting plate 7 is provided at the top of the telescopic end of the lifting hydraulic cylinder 6. A positioning sleeve is integrally formed at the bottom of the rotating connecting plate 7. A rotating bearing is fixedly installed inside the positioning sleeve. The inner ring of the rotating bearing is fixedly sleeved on the top of the telescopic end of the lifting hydraulic cylinder 6.

[0029] A positioning cylinder 16 is fixedly connected to the top of the rotating connecting plate 7. A positioning block 17 is fixedly installed inside the positioning cylinder 16. An installation bearing plate 8 is fixedly connected to the top of the positioning block 17. A cross clamping bracket 24 is fixedly connected to the top of the installation bearing plate 8.

[0030] The top of the arm of the cross clamp 24 is provided with a transmission groove 26. A transmission threaded rod 27 is rotatably installed inside the transmission groove 26. A transmission slider 29 is threadedly sleeved on the outer wall of the transmission threaded rod 27 and is slidably installed inside the transmission groove 26.

[0031] The top of the transmission slider 29 is fixedly connected to a bearing connecting arm 30. The top of the bearing connecting arm 30 is provided with a rotating mounting groove 31. Multiple bearing rollers 32 are equidistantly mounted inside the rotating mounting groove 31. The top of the bearing rollers 32 is higher than the top of the bearing connecting arm 30 and fits against the wheel disc of the turbine 9 to be repaired, so as to avoid adverse effects on the wheel disc.

[0032] The top of one end of the bearing connecting arm 30 near the central axis of the cross clamping frame 24 is fixedly connected to a clamping pin 33. Multiple clamping pins 33 are inserted into the wheel disk of the turbine 9 to be repaired, and the contact surface between the clamping pins 33 and the turbine 9 to be repaired is provided with an arc surface.

[0033] The top of the cross clamp 24 is provided with a mating groove 25. The bottom wall of the mating groove 25 is rotatably mounted with a rotating connecting column 34 via a bearing. A bevel gear 36 is fixedly mounted in the middle of the outer wall of the rotating connecting column 34. A rotating limit frame 35 is rotatably sleeved on the top of the outer wall of the rotating connecting column 34. The rotating limit frame 35 is fixedly mounted on the top of the cross clamp 24.

[0034] The top of the rotating connecting column 34 is provided with a hexagonal slot, and a hexagonal insert is inserted into the hexagonal slot. The top of the hexagonal insert is integrally formed with a T-shaped control handle 37. One end of the transmission threaded rod 27 extends into the mating groove 25, and a bevel gear 28 that meshes with the bevel gear 26 is fixedly installed at its extended end.

[0035] A bearing 12 is fixedly sleeved on the outer wall of the positioning and mounting cylinder 5. A rotating connecting ring 13 is fixedly installed on the outer wall of the outer ring of the bearing 12. A driven bevel gear 14 is fixedly installed on the outer wall of the rotating connecting ring 13. A driving bevel gear 15 is meshed on the outer wall of the driven bevel gear 14.

[0036] A motor base 10 is fixedly installed on the top of the mobile trolley 4, and a drive motor 11 is fixedly installed on the top of the motor base 10. A drive bevel gear 15 is fixedly installed on the end of the output shaft of the drive motor 11.

[0037] Multiple limiting slide cylinders 18 are fixedly connected at equal intervals to the top of the rotating connecting ring 13. A connecting slide column 19 is slidably installed inside the limiting slide cylinder 18. A fixing ear plate 20 is sleeved on the top of the connecting slide column 19. Multiple fixing ear plates 20 are integrally formed on the outer wall of the rotating connecting disk 7.

[0038] A limiting ring is integrally formed on the top of the outer wall of the connecting slide 19. The limiting ring fits against the lower surface of the fixing ear plate 20, and the top of the connecting slide 19 extends to the upper surface of the fixing ear plate 20, with a nut threaded onto its extended end.

[0039] Working principle:

[0040] Please refer to Figures 1 to 4 Assemble the device as shown in the figure;

[0041] When using this device, first place the turbine 9 to be repaired on the top of the cross clamp 24, so that the bearing rollers 32 of the four arms of the cross clamp 24 are in contact with the wheel disc. Then, insert the T-shaped control handle 37 into the top of the rotating connecting column 34 and rotate it clockwise. The rotating connecting column 34 drives the second bevel gear 36 to rotate synchronously. The second bevel gear 36 meshes with the four first bevel gears 28, which drives the four transmission threaded rods 27 to rotate synchronously. The transmission threaded rods 27 drive the transmission slider 29 to slide away from the rotating connecting column 34 in the transmission groove 26. The transmission slider 29 brings the clamping pins 33 close to the inner wall of the wheel disc, and the four clamping pins 33 fix the turbine 9 to be repaired. The moving trolley 4 drives the turbine 9 to be repaired after clamping to undergo pre-welding heat treatment, and then enters the welding protection box 1. The connecting plate 23 is inserted into the two Between the fixed clamping arms 22, the drive motor 11 is started. The drive motor 11 drives the rotating connecting ring 13 to rotate through the meshing of the drive bevel gear 15 and the driven bevel gear 14. The rotating connecting ring 13 drives the rotating connecting disk 7 to rotate through the limiting slide cylinder 18 and the connecting slide column 19. The rotating connecting disk 7 drives the turbine 9 to be repaired to rotate through the mounting bearing disk 8 and the cross clamp 24, so that the working blade with the crack in the turbine 9 to be repaired is aligned with the laser cladding head of the laser cladding welding robot arm 2, which facilitates the welding repair of the working blade. If multiple working blades need to be repaired, after the repair of one working blade is completed, the drive motor 11 is started again, causing the mounting bearing disk 8 to drive the turbine 9 to be repaired to rotate, so that the other working blade to be repaired is aligned with the laser cladding head of the laser cladding welding robot arm 2.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding repair device for engine turbine working blades, comprising a laser cladding welding robotic arm (2) and a movable clamping assembly disposed inside a welding protective box (1), characterized in that: The top of the mobile clamping assembly is clamped with a turbine (9) to be repaired. The laser cladding welding robot arm (2) welds and repairs the cracked blades of the turbine (9) to be repaired. The main body of the mobile clamping assembly is a mobile trolley (4). A lifting hydraulic cylinder (6) is fixedly installed on the top of the mobile trolley (4). A rotating connecting plate (7) is rotatably installed on the top of the telescopic end of the lifting hydraulic cylinder (6). An installation bearing plate (8) is fixedly installed on the top of the rotating connecting plate (7). A cross clamping frame (24) is fixedly connected to the top of the installation bearing plate (8). A transmission groove (26) is opened on the top of the support arm of the cross clamping frame (24). A transmission slider (29) is slidably installed inside the transmission groove (26). A bearing connecting arm (30) is fixedly connected to the top of the transmission slider (29). A clamping pin (33) is fixedly connected to the top of one end of the bearing connecting arm (30). Multiple clamping pins (33) are inserted into the wheel disk of the turbine (9) to be repaired.

2. The engine turbine working blade welding repair device according to claim 1, characterized in that: The top of the cross clamp (24) is provided with a mating groove (25), and a rotating connecting column (34) is rotatably installed on the bottom wall of the mating groove (25).

3. The engine turbine working blade welding repair device according to claim 2, characterized in that: A bevel gear (36) is fixedly installed in the middle of the outer wall of the rotating connecting column (34), and a rotating limit frame (35) is rotatably sleeved on the top of the outer wall of the rotating connecting column (34).

4. The engine turbine working blade welding repair device according to claim 1, characterized in that: The transmission slide groove (26) is rotatably mounted with a transmission threaded rod (27) that is threadedly connected to the transmission slider (29). One end of the transmission threaded rod (27) extends into the mating groove (25), and its extended end is fixedly mounted with a bevel gear (28) that meshes with the bevel gear (36).

5. The engine turbine working blade welding repair device according to claim 1, characterized in that: The upper surface of the bearing connecting arm (30) is provided with a rotating mounting groove (31), and multiple bearing rollers (32) for supporting the turbine (9) to be repaired are rotatably mounted at equal intervals inside the rotating mounting groove (31).

6. The engine turbine working blade welding repair device according to claim 1, characterized in that: The top of the mobile trolley (4) is fixedly connected to a positioning mounting cylinder (5) for mounting a lifting hydraulic cylinder (6), and a rotating connecting ring (13) is rotatably mounted on the outer wall of the positioning mounting cylinder (5).

7. The engine turbine working blade welding repair device according to claim 6, characterized in that: The outer wall of the rotating connecting ring (13) is fixedly mounted with a driven bevel gear (14), and the outer wall of the driven bevel gear (14) is meshed with a driving bevel gear (15).

8. The engine turbine working blade welding repair device according to claim 7, characterized in that: The top of the mobile trolley (4) is fixedly mounted with a drive motor (11), and the drive bevel gear (15) is fixedly mounted on the end of the output shaft of the drive motor (11).

9. The engine turbine working blade welding repair device according to claim 6, characterized in that: The top end of the rotating connecting ring (13) is fixedly connected with multiple limiting slide cylinders (18) at equal intervals, and the inside of the limiting slide cylinder (18) is slidably installed with a connecting slide column (19) that is fixedly connected to the rotating connecting plate (7).

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