High-temperature turbine blade welding fixing clamp

Abstract

The utility model relates to the technical field of turbine blade welding clamps, in particular to a high-temperature turbine blade welding fixing clamp which comprises a U-shaped welding frame, rotating plates are rotatably connected to the opposite faces of the inner wall of the welding frame respectively, welding tables are fixedly connected to the opposite faces of the two rotating plates, the welding tables are round, and the rotating plates are fixedly connected to the welding tables. A servo motor is fixedly connected to the side wall of the welding frame, the output end of the servo motor penetrates through the inner wall of the welding frame and is fixedly connected to the side wall of the rotating plate, a clamping mechanism used for clamping turbine blades is arranged on the outer wall of the welding table, and a fixing mechanism used for fixing the blade mounting base is arranged in the middle of the welding table. The clamping mechanism comprises communicating grooves which are formed in the top of the welding table and evenly distributed at equal intervals. Compared with the prior art, the blade welding device is simple in structure and convenient to operate, the blade and the mounting base can be clamped only by rotating the rotating handle, the welding efficiency is greatly improved, time and labor are saved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine blade welding fixtures, in particular to a high-temperature turbine blade welding and fixing fixture. Background Art

[0002] A turbine is a fan in a car or airplane engine that uses exhaust gases to blow fuel vapor into the engine, improving performance. A turbine is a rotary power machine that converts the energy of a flowing fluid into mechanical work. It is a key component of aircraft engines, gas turbines, and steam turbines. Turbines typically operate efficiently in conjunction with blades, which are typically made of high-temperature alloys that must withstand extremely high temperatures during welding. Furthermore, the complex geometry and high-precision requirements of turbine blades make clamping during welding particularly critical, necessitating high-precision welding. During welding, intelligent robotic arms are used to weld the blades to their mountings.

[0003] A Chinese patent discloses: a blade welding fixture for an impeller assembly, patent announcement number: CN202479726U. The patent states that "a blade positioning and clamping structure is installed on the fixture base plate, and three blade positioning and clamping structures are provided. The three blade positioning and clamping structures are evenly arranged on the fixture base plate along the blade rotation direction."

[0004] Although this equipment can solve the problems of poor blade positioning accuracy, difficult welding and low welding efficiency in the welding process of blades and impeller assembly shells, when fixing the impeller and blades, the equipment requires manual frequent rotation of locking screws, tightening screws, and tightening screws to clamp and fix the blades and impeller. The fixing is cumbersome, resulting in a long time spent in the welding work, which directly leads to an increase in the welding time of each blade, prolonging the entire production cycle, reducing the welding efficiency, and is time-consuming, labor-intensive, and inconvenient to use. Utility Model Content

[0005] In view of this, the purpose of the present invention is to propose a high-temperature turbine blade welding fixture to solve the problem that blade fixing is complicated, resulting in a long welding time, extending the entire production cycle and reducing welding efficiency.

[0006] Based on the above-mentioned purpose, the utility model provides a high-temperature turbine blade welding and fixing fixture, including a welding frame, the shape of the welding frame is U-shaped, and rotating plates are rotatably connected to the opposite surfaces of the inner wall of the welding frame, and welding tables are fixedly connected to the opposite surfaces of the two rotating plates. The shape of the welding table is circular, and the side wall of the welding frame is fixedly connected to a servo motor, the output end of the servo motor passes through the inner wall of the welding frame and is fixedly connected to the side wall of the rotating plate, and a clamping mechanism for clamping the turbine blade is provided on the outer wall of the welding table, and a hollow cylinder is fixedly connected to the middle position of the welding table, and a limiting block is fixedly connected to the interior of the hollow cylinder, and a fixing mechanism for fixing the blade mounting seat is provided inside the hollow cylinder.

[0007] Preferably, the clamping mechanism includes a plurality of connecting grooves equidistantly and evenly distributed on the top of the welding table, the interior of the connecting grooves is slidably connected to a sliding column, the tops of the sliding columns are respectively fixedly connected to a clamping plate, the bottom of the welding table is rotatably connected to a rotating disk, the top of the rotating disk is provided with a plurality of arc-shaped grooves equidistantly and evenly distributed, and the bottom end of the sliding column extends into the arc-shaped groove.

[0008] Preferably, the outer wall of the rotating disk is provided with a semicircular tooth groove, the bottom of the welding table is rotatably connected to a gear, the outer wall of the gear and the semicircular tooth groove are engaged with each other, and the bottom of the gear is fixedly connected to a rotating handle.

[0009] Preferably, the fixing mechanism includes a pulling column that is slidably connected to the middle part of the limit block, and the top two sides of the pulling column are rotatably connected to relative limit rods, and the end of the limit rod close to the limit block is rotatably connected to a roller, and slopes are provided on both sides of the top of the limit block, and the outer wall of the roller is in contact with the slope.

[0010] Preferably, a telescopic spring is fixedly connected between the side walls of the limit rod near one end of the limit block, the bottom of the limit block is rotatably connected to a threaded rod, the outer wall of the threaded rod is threadedly connected to a movable plate, an extrusion spring is fixedly connected between the pulling column and the opposite surface of the movable plate, and a belt is provided between the outer wall of one end of the threaded rod and the outer wall of the rotating handle through a pulley sleeve.

[0011] Preferably, a stabilizing rod is fixedly connected to the other side of the limiting block, and one end of the movable plate is slidably connected to the outer wall of the stabilizing rod.

[0012] Preferably, an auxiliary limiting block is fixedly connected to one end of the top of the welding platform close to the communicating groove, and an auxiliary groove adapted to the outer wall of the blade is formed inside the auxiliary limiting block.

[0013] Preferably, the side wall of the welding table is rotatably connected to a seesaw, one end of the seesaw is fixedly connected to a locking block, the outer wall of the locking block is engaged with the gear, the other end of the seesaw is fixedly connected to a reciprocating spring, and the other end of the reciprocating spring is fixedly connected to the side wall of the welding table.

[0014] Preferably, the side wall of the clamping plate and the bottom of one end of the limiting rod are both provided with a thermal insulation layer.

[0015] The beneficial effects of the present invention are as follows: the high-temperature turbine blade welding fixing fixture can be realized by rotating the rotating handle in the clamping mechanism, and the rotating handle drives the gear to rotate. When the gear rotates, it engages with the semicircular tooth groove and drives the rotating disk to rotate. When the rotating disk rotates, it drives the arc-shaped slot to rotate. When the arc-shaped slot rotates, it pushes the sliding column inside the arc-shaped slot. Then the sliding column is pushed by the arc-shaped slot and slides in the connecting groove. When the sliding column slides, it drives the clamping plate to move close to one end of the blade and clamp the blade, so that multiple blades can be clamped through simple operation, and blades of different lengths can also be clamped. At the same time, when the rotating handle is rotated, the fixing mechanism will be driven by the belt to limit the mounting seat, ensuring the stability of each blade and avoiding the movement of the blade during welding. The structure is simple and the operation is convenient. The blade and the mounting seat can be clamped by simply rotating the rotating handle, which greatly improves the welding efficiency, saves time and effort, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the clamping mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixing mechanism of the utility model;

[0020] Figure 4 For this utility model Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0021] Figure 5 For this utility model Figure 2 The enlarged schematic diagram of the three-dimensional structure at point B in the middle.

[0022] The following are marked in the figure:

[0023] 1. Welding frame; 2. Rotating plate; 3. Welding table; 4. Servo motor; 5. Connecting groove; 6. Sliding column; 7. Clamping plate; 8. Rotating disk; 9. Arc-shaped through groove; 10. Semicircular tooth groove; 11. Gear; 12. Rotating handle; 13. Hollow cylinder; 14. Limit block; 15. Pull column; 16. Limit rod; 17. Roller; 18. Telescopic spring; 19. Threaded rod; 20. Moving plate; 21. Extrusion spring; 22. Belt; 23. Stabilizing rod; 24. Auxiliary limit block; 25. Rocker; 26. Engaging block; 27. Reciprocating spring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0026] like Figures 1 to 5 As shown, a high-temperature turbine blade welding and fixing fixture includes a welding frame 1, which is U-shaped. The opposite surfaces of the inner wall of the welding frame 1 are respectively rotatably connected to rotating plates 2, and the opposite surfaces of the rotating plate 2 are fixedly connected to welding tables 3. The shape of the welding table 3 is circular, and the side wall of the welding frame 1 is fixedly connected to a servo motor 4. The output end of the servo motor 4 passes through the inner wall of the welding frame 1 and is fixedly connected to the side wall of the rotating plate 2. The outer wall of the welding table 3 is provided with a clamping mechanism for clamping the turbine blade, and a hollow cylinder 13 is fixedly connected to the middle position of the welding table 3. The interior of the hollow cylinder 13 is fixedly connected to a limiting block 14, and the interior of the hollow cylinder 13 is provided with a fixing mechanism for fixing the blade mounting seat; after clamping the blade, the servo motor 4 drives the rotating plate 2 to rotate, and the rotating plate 2 drives the welding table 3 to rotate, and then the welding table 3 drives the clamped blade to rotate, so that the intelligent robot arm can perform welding at multiple angles.

[0027] For further information, see the attached Figure 2 As shown, the clamping mechanism includes a plurality of communicating grooves 5 equidistantly distributed on the top of the welding table 3, the interior of the communicating grooves 5 are slidably connected to sliding columns 6, the tops of the sliding columns 6 are respectively fixedly connected to clamping plates 7, the bottom of the welding table 3 is rotatably connected to a rotating disk 8, the top of the rotating disk 8 is provided with a plurality of arc-shaped through grooves 9 equidistantly distributed, the bottom ends of the sliding columns 6 extend into the arc-shaped through grooves 9, the outer wall of the rotating disk 8 is provided with a semicircular tooth groove 10, the bottom of the welding table 3 is rotatably connected to a gear 11, the outer wall of the gear 11 is engaged with the semicircular tooth groove 10, and the bottom of the gear 11 is fixedly connected to a rotating handle 12;

[0028] When the clamping mechanism is in use, first set the mounting seat sleeve on the outer wall of the hollow cylinder 13, then insert the blade into the auxiliary limit block 24, then the other end of the blade fits with the mounting seat, and then turn the rotating handle 12. The rotating handle 12 drives the gear 11 to rotate. When the gear 11 rotates, it will engage with the semicircular tooth groove 10 to drive the rotating disk 8 to rotate. When the rotating disk 8 rotates, it will drive the arc groove 9 to rotate. When the arc groove 9 rotates, it will push the sliding column 6 inside the arc groove 9. Then the sliding column 6 is pushed by the arc groove 9 to slide in the connecting groove 5. When the sliding column 6 slides, it will drive the clamping plate 7 to move close to one end of the blade and clamp the blade, so that multiple blades can be clamped through simple operation, and blades of different lengths can also be clamped. The clamping operation is convenient, which greatly improves the production efficiency, avoids the movement of blades during welding, and is easy to use.

[0029] For further information, see the attached Figure 3 As shown, the fixing mechanism includes a pulling column 15 that passes through and is slidably connected to the middle part of the limit block 14. Slopes are provided on both sides of the top of the limit block 14. The outer wall of the roller 17 contacts the slope. The top two sides of the pulling column 15 are rotatably connected to relative limit rods 16. The limit rod 16 is rotatably connected to the roller 17 at one end near the limit block 14. A telescopic spring 18 is fixedly connected between the side walls of the limit rod 16 near one end of the limit block 14. The bottom of the limit block 14 is rotatably connected to a threaded rod 19. The outer wall of the threaded rod 19 is threadedly connected to a movable plate 20. An extrusion spring 21 is fixedly connected between the opposite surfaces of the pulling column 15 and the movable plate 20. A belt 22 is provided between the outer wall of one end of the threaded rod 19 and the outer wall of the rotating handle 12 through a pulley sleeve. A stabilizing rod 23 is fixedly connected to the other side of the limit block 14, and one end of the movable plate 20 is slidably connected to the outer wall of the stabilizing rod 23.

[0030] When the fixing mechanism is in use, first, when the rotating handle 12 drives the clamping mechanism to clamp the blade, the rotating handle 12 will drive the threaded rod 19 to rotate through the belt 22. At this time, the movable plate 20 is at the top of the threaded rod 19. When the threaded rod 19 rotates, it will drive the movable plate 20 to rotate downward, and then the movable plate 20 will pull the extrusion spring 21 to move downward. When the extrusion spring 21 moves downward, it will pull the pulling column 15 to slide downward, and then the pulling column 15 will pull the limiting rods 16 on both sides to move downward. When the limiting rod 16 moves downward, one end of the limiting rod 16 will drive the roller 17 to slide on the slopes opened on both sides of the top of the limiting block 14. When the pulling column 15 continues to pull the limiting rod 16 downward, the two ends of the limiting rod 16 will open and pull the telescopic spring 18, and then the limiting rod 16 The top of the limit rod 16 will contact the top of the blade mounting seat and limit it, and the end of the limit rod 16 close to the roller 17 will slide to both sides of the limit block 14, thereby achieving the fixation of the mounting seat. When the fixing mechanism has fixed the mounting seat and the clamping mechanism has not completely clamped the blade, it is only necessary to continue to rotate the rotating handle 12 to drive the clamping mechanism to continue clamping the blade through the gear 11, and the rotating handle 12 will continue to drive the movable plate 20 to move downward through the belt 22 and pull the extrusion spring 21, thereby avoiding the situation where the fixing mechanism is fixed but the clamping mechanism has not completely clamped the blade, and then cooperate with the intelligent welding robot arm to weld between the blade and the fixing seat, thereby avoiding the situation where the mounting seat shakes during blade welding, increasing the welding accuracy, and making the blade welding distance consistent.

[0031] For further information, see the attached Figure 4 As shown, the top of the welding table 3 is fixedly connected to one end of the connecting groove 5 with an auxiliary limit block 24. The interior of the auxiliary limit block 24 is provided with an auxiliary groove that is adapted to the outer wall of the blade. Through the auxiliary groove, the other end of the blade can be fixed, thereby increasing the stability of the clamping mechanism when clamping the blade.

[0032] For further information, see the attached Figure 5 As shown, the side wall of the welding table 3 is rotatably connected to a seesaw 25, one end of the seesaw 25 is fixedly connected to a locking block 26, the outer wall of the locking block 26 is locked with the gear 11, and the other end of the seesaw 25 is fixedly connected to a reciprocating spring 27, the other end of the reciprocating spring 27 is fixedly connected to the side wall of the welding table 3. When the clamping mechanism clamps the blade, the reciprocating spring 27 squeezes the seesaw 25, and the seesaw 25 drives the locking block 26 to rotate toward the gear 11, and then the locking block 26 will engage with the gear 11, thereby limiting the gear 11, thereby ensuring the force with which the clamping plate 7 clamps the blade.

[0033] For further information, see the attached Figure 2 and Figure 3As shown, the side wall of the clamping plate 7 and the bottom of one end of the limiting rod 16 are provided with a thermal insulation layer, which protects the clamping plate 7 and one end of the limiting rod 16, avoids temperature transfer, and increases the service life of the clamping plate 7 and the limiting rod 16.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0035] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A high-temperature turbine blade welding fixture, comprising a welding frame (1), wherein the welding frame (1) is U-shaped, and is characterized in that: Rotating plates (2) are rotatably connected to the opposite surfaces of the inner wall of the welding frame (1), and welding platforms (3) are fixedly connected to the opposite surfaces of the two rotating plates (2). The shape of the welding platform (3) is circular. A servo motor (4) is fixedly connected to the side wall of the welding frame (1). The output end of the servo motor (4) passes through the inner wall of the welding frame (1) and is fixedly connected to the side wall of the rotating plate (2). A clamping mechanism for clamping the turbine blade is provided on the outer wall of the welding platform (3). A hollow cylinder (13) is fixedly connected to the middle position of the welding platform (3). A limiting block (14) is fixedly connected to the interior of the hollow cylinder (13). A fixing mechanism for fixing the blade mounting seat is provided inside the hollow cylinder (13).

2. A high-temperature turbine blade welding fixture according to claim 1, characterized in that: The clamping mechanism comprises a plurality of communicating grooves (5) which are evenly distributed and equidistantly provided on the top of the welding table (3); a sliding column (6) is slidably connected to the inside of each communicating groove (5); a clamping plate (7) is fixedly connected to the top of each sliding column (6); a rotating disk (8) is rotatably connected to the bottom of the welding table (3); a plurality of arc-shaped through grooves (9) which are evenly distributed and equidistantly provided on the top of the rotating disk (8); and the bottom end of each sliding column (6) extends into the arc-shaped through groove (9).

3. A high-temperature turbine blade welding fixture according to claim 2, characterized in that: The outer wall of the rotating disk (8) is provided with a semicircular tooth groove (10), the bottom of the welding table (3) is rotatably connected to a gear (11), the outer wall of the gear (11) and the semicircular tooth groove (10) are meshed with each other, and the bottom of the gear (11) is fixedly connected to a rotating handle (12).

4. The high-temperature turbine blade welding fixture according to claim 1, characterized in that: The fixing mechanism includes a pulling column (15) that is slidably connected to the middle part of the limit block (14), and the top two sides of the pulling column (15) are rotatably connected to relative limit rods (16), and the end of the limit rod (16) close to the limit block (14) is rotatably connected to a roller (17), and both sides of the top of the limit block (14) are provided with slopes, and the outer wall of the roller (17) is in contact with the slopes.

5. A high-temperature turbine blade welding fixture according to claim 4, characterized in that: A telescopic spring (18) is fixedly connected between the side walls of the limiting rod (16) near one end of the limiting block (14), a threaded rod (19) is rotatably connected to the bottom of the limiting block (14), an outer wall of the threaded rod (19) is threadedly connected to a movable plate (20), an extrusion spring (21) is fixedly connected between the opposite surfaces of the pulling column (15) and the movable plate (20), and a belt (22) is provided between the outer wall of one end of the threaded rod (19) and the outer wall of the rotating handle (12) via a pulley sleeve.

6. The high-temperature turbine blade welding fixture according to claim 5, characterized in that: The other side of the limit block (14) is fixedly connected to a stabilizing rod (23), and one end of the movable plate (20) is slidably connected to the outer wall of the stabilizing rod (23).

7. The high-temperature turbine blade welding fixture according to claim 1, characterized in that: An auxiliary limiting block (24) is fixedly connected to one end of the top of the welding platform (3) close to the connecting groove (5), and an auxiliary groove adapted to the outer wall of the blade is provided inside the auxiliary limiting block (24).

8. The high-temperature turbine blade welding fixture according to claim 1, characterized in that: The side wall of the welding platform (3) is rotatably connected to a seesaw (25), one end of the seesaw (25) is fixedly connected to a locking block (26), the outer wall of the locking block (26) is locked with the gear (11), the other end of the seesaw (25) is fixedly connected to a reciprocating spring (27), and the other end of the reciprocating spring (27) is fixedly connected to the side wall of the welding platform (3).

9. The high-temperature turbine blade welding fixture according to claim 2, characterized in that: The side wall of the clamping plate (7) and the bottom of one end of the limiting rod (16) are both provided with a thermal insulation layer.

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