A welding device for a water turbine runner

Abstract

This invention discloses a welding device for a water turbine runner, comprising a transfer and positioning assembly and a welding assembly. The transfer and positioning assembly consists of an indexing turntable A and an indexing turntable B. Indexing turntable A is equipped with two sets of evenly distributed positioning chucks A for fixing positioning rings; indexing turntable B is equipped with three sets of evenly distributed positioning chucks B for fixing the runner body or a positioning platform, the latter for evenly arranging and positioning blades. The welding assembly is paired with indexing turntables A and B, comprising a rotating ring A and a rotating ring B, respectively equipped with laser welding gun A and laser welding gun B. Laser welding gun A is responsible for welding the connection between the positioning rings and the blades, while laser welding gun B is responsible for welding the connection between the runner body and the blades. This significantly improves welding precision and efficiency, reduces the risks associated with manual operation, and improves the production environment, fully meeting the needs of modern water turbine manufacturing. It enables higher quality welding, optimizes the production process, and improves overall production efficiency.

Description

Technical Field

[0001] This invention relates to the field of turbine runner manufacturing technology, specifically a turbine runner welding device. Background Technology

[0002] In the manufacturing and maintenance of modern water turbines, the runner is a key component, and its welding quality directly affects the turbine's operating efficiency and lifespan. However, currently, the welding of water turbine runners mainly relies on manual operation, lacking specialized welding equipment. This situation not only makes the welding process highly dependent on the experience and skills of workers, but also leads to a series of problems such as insufficient welding precision and low welding efficiency.

[0003] Traditional welding methods have significant drawbacks in terms of welding precision. Workers often cannot maintain consistent welding parameters, leading to inconsistent weld strength and quality, which can potentially affect the overall performance and safety of the turbine. Furthermore, the high temperatures and deformation during welding can also impact the runner's geometry, increasing the difficulty of subsequent repairs and adjustments.

[0004] Although some welding equipment exists on the market, its level of automation is generally low, still requiring manual loading and unloading. This not only increases labor costs but also raises production complexity and safety risks. During the welding process, workers need to intervene frequently for positioning, adjustment, and monitoring, which greatly limits the efficiency and flexibility of the welding equipment. An ideal welding device should be able to complete loading and unloading without manual assistance, maximizing production efficiency.

[0005] Furthermore, the welds between the blades and the main body and positioning rings in the turbine runner typically have irregular trajectories, and due to the close arrangement of the blades, traditional welding equipment struggles to perform precise welding. Existing welding equipment can usually only perform preliminary welding and fixation, and subsequent manual welding is still required to enhance the stability of the connection. This not only prolongs the production cycle but also increases the possibility of human error.

[0006] Therefore, there is an urgent need for a dedicated welding device for water turbine runners. This device should be able to automate the welding process and efficiently and precisely handle the complex welding requirements inside the runner. Such a device would significantly improve welding efficiency and precision, reduce reliance on manual labor, lower production costs, and enhance the overall performance and reliability of the water turbine. Summary of the Invention

[0007] In view of the above-mentioned shortcomings in the existing technology, the purpose of this invention is to provide a turbine runner welding device that not only significantly improves welding accuracy and efficiency, but also effectively reduces operational risks, improves the production environment, and fully meets the needs of modern turbine manufacturing.

[0008] The technical solution adopted by the present invention to achieve the above objectives is: a turbine runner welding device, wherein the turbine runner includes a runner body, a positioning ring, and blades, the blades are evenly distributed in a ring array and fixedly connected to the runner body and the positioning ring, and the runner body and the positioning ring are coaxially arranged and respectively arranged on the inner and outer sides of the blades.

[0009] include:

[0010] The transfer and positioning assembly includes an indexing turntable A and an indexing turntable B. The indexing turntable A is equipped with two sets of evenly distributed positioning chucks A, which are used to fix the positioning ring. The indexing turntable B is equipped with three sets of evenly distributed positioning chucks B, which are used to fix the wheel body or positioning platform. The positioning platform is used to evenly arrange and position the blades.

[0011] A welding assembly is provided, which is arranged in conjunction with indexing turntable A and indexing turntable B. The welding assembly includes a rotating ring A and a rotating ring B, on which laser welding gun A and laser welding gun B are respectively mounted. Laser welding gun A is used to weld the connection position between the positioning ring and the blade, and laser welding gun B is used to weld the connection position between the wheel body and the blade.

[0012] In some implementations, to ensure that the transfer and positioning components and welding components involved can be stably installed and operate in coordination, and to ensure that the welding work of the turbine runner is not affected by the external environment, the following technical solutions are provided.

[0013] It also includes a base and a cover, the cover being fixedly installed on the base, the transfer and positioning assembly being assembled on the base and arranged in the cover, and the welding assembly being assembled on the inner wall of the cover.

[0014] The machine cover is provided with a feeding port and an inlet / outlet. There is one set of feeding ports arranged above the indexing turntable A, and three sets of inlet / outlet ports are evenly distributed below the indexing turntable B.

[0015] In some implementations, to ensure that the transfer and positioning components can be stably assembled on the machine tool and that indexing turntables A and B can operate independently, the following technical solutions are provided.

[0016] The transfer and positioning assembly also includes an assembly column and drive motor A and drive motor B fixedly installed on the assembly column. The indexing turntable A and indexing turntable B are both rotatably installed on the assembly column. The indexing turntable A is arranged directly above the indexing turntable B. The drive motor A and drive motor B are respectively poweredly connected to the indexing turntable A and indexing turntable B.

[0017] In some implementations, to ensure that the positioning chuck A can be stably installed on the indexing turntable A and that the positioning chuck A can realize the designed operating functions so that the positioning chuck A can drive the fixed component to operate or restrict its operation, the following technical solutions are provided.

[0018] The indexing turntable A has two sets of assembly ports A arranged in a ring array. The positioning chuck A is installed in the assembly port A in a relatively rotating manner. The outer edge of the positioning chuck A has uniformly opened slots. An electric telescopic cylinder is fixedly installed on the indexing turntable A and arranged radially along the positioning chuck A. The movable end of the electric telescopic cylinder is fixedly connected to a key that is nested and engaged with the slot.

[0019] In some implementations, to ensure that the positioning chuck B can be stably installed on the indexing turntable B and to ensure that the positioning chuck B can realize the designed operating function so that the positioning chuck B can drive the fixed component to move up and down along the axial direction, the following technical solutions are provided.

[0020] The indexing turntable B has three sets of assembly ports B arranged in a ring. The positioning chuck B is arranged above the assembly ports B. The bottom of the positioning chuck B is fixed with multiple sets of guide rods and adjusting screws. The guide rods are slidably inserted into the indexing turntable B.

[0021] An internal gear ring and a rotating gear are rotatably mounted in the indexing turntable B. The rotating gear is kept in rotation with the adjusting screw and is engaged with the internal gear ring. A drive motor C is also fixedly mounted at the bottom of the indexing turntable, and the drive motor C is in a power connection with the internal gear ring.

[0022] In some implementations, the following technical solutions are provided to ensure that the turbine runner body, positioning platform, and assembled and welded turbine runner can enter and exit the hood through the inlet and outlet ports, and to enable the turbine runner body, positioning platform, and turbine runner to be disassembled and assembled onto the positioning chuck B.

[0023] It also includes a transfer assembly assembled in the inlet / outlet. The transfer assembly includes an assembly bracket, a transfer roller, a drive motor D, a hydraulic telescopic cylinder, and a positioning pad. The assembly bracket is fixedly installed at the inlet / outlet. Multiple sets of transfer rollers arranged side by side are rotatably mounted on the assembly bracket. The drive motor is poweredly connected to the transfer rollers. The hydraulic telescopic cylinder is fixedly installed on the base and arranged in a vertical direction. The positioning pad is fixedly installed on the movable end of the hydraulic telescopic cylinder and arranged in the gap of the transfer rollers.

[0024] In some implementations, to ensure that the components transported by the transfer assembly can be nested and inserted with the positioning pad below to achieve cooperation between the two, and thus the positioning pad effectively supports the transferred components, an arc-shaped positioning seat is fixed to the inner end of the assembly bracket.

[0025] In some implementations, to ensure that the rotating rings A and B in the welding assembly can be stably installed in a relative rotational manner, to ensure the stable operation of the rotating rings A and B, and to enable the laser welding guns A and B on them to stably weld the various components of the turbine runner, the following technical solutions are provided.

[0026] The inner wall of the machine cover is fixedly connected to a mounting bracket. The rotating ring A and rotating ring B are rotatably mounted on the mounting bracket and respectively arranged on the upper and lower sides of the indexing turntable A. The outer periphery of the rotating ring A and rotating ring B is fixedly connected to a transmission spur gear.

[0027] The welding assembly also includes a drive motor E, a drive shaft, and two sets of ratchet mechanisms arranged in opposite directions. The drive motor E is fixedly mounted on the mounting bracket, the drive shaft is rotatably mounted on the mounting bracket and maintains a power connection with the drive motor E, the drive shaft is power-connected to the two sets of ratchet mechanisms, and the two sets of ratchet mechanisms are power-connected to the two sets of transmission spur gears respectively.

[0028] In some implementations, to ensure that the recording mechanism can achieve the purpose of power splitting and transmission, so as to drive rotating ring A or rotating ring B to operate independently, the following technical solutions are provided.

[0029] The ratchet mechanism includes a drive spur gear, an inner ratchet, a pawl, and a spring. The drive spur gear is rotatably mounted on the mounting bracket and meshes with the corresponding transmission spur gear. The inner ratchet is coaxially fixed to the drive spur gear. The drive shaft passes through the axis of the drive spur gear. The pawl is rotatably mounted around the drive shaft and meshes with the inner ratchet. The spring is arranged between the pawl and the drive shaft.

[0030] Since the welding trajectory between the blade and the positioning ring and the main body of the rotor is a relatively complex curve and there is a height difference, the following technical solution is provided to ensure that laser welding gun A and laser welding gun B can accurately weld the blade.

[0031] A robotic arm A is fixedly mounted on the rotating ring A, and a laser welding gun A is fixedly mounted on the robotic arm A. A robotic arm B is fixedly mounted on the rotating ring B, and a laser welding gun B is fixedly mounted on the robotic arm B.

[0032] The beneficial effects of this invention are:

[0033] 1. Improve welding precision: This device can ensure stable parameters during the welding process without relying on human experience, significantly improve welding precision, ensure the consistency of weld strength and quality, and thus improve the overall performance and safety of the turbine.

[0034] 2. Improved welding efficiency: Through a fully automated welding process, the equipment reduces manual intervention and significantly shortens the production cycle. The substantial increase in welding efficiency lowers labor costs and brings greater economic benefits to enterprises.

[0035] 3. Flexible handling of irregular welds: This device is specially designed for irregular welds between the blades and the main body of the turbine runner and the positioning ring. It can flexibly adjust the welding path to ensure welding accuracy and reduce the reliance on manual welding in traditional methods.

[0036] 4. Reduced operational risks: Automated operation reduces the time workers spend in high-temperature welding environments, lowering safety risks and improving operational safety. Furthermore, the equipment's high-efficiency welding capabilities reduce subsequent repairs and adjustments caused by welding quality issues, thereby lowering overall maintenance costs.

[0037] 5. Improved production environment: The use of welding equipment will improve the production environment, allowing workers to stay away from high temperatures and harmful gases, thus enhancing the comfort and safety of the working environment.

[0038] In summary, the turbine runner welding device proposed in this solution not only significantly improves welding accuracy and efficiency, but also effectively reduces operational risks, improves the production environment, and fully meets the needs of modern turbine manufacturing. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the turbine runner.

[0041] Figure 3 This is a schematic diagram of the structure of the present invention after the cover is removed;

[0042] Figure 4 This is a schematic diagram of the transfer and positioning component.

[0043] Figure 5 This is a cross-sectional disassembly diagram of indexing turntable A;

[0044] Figure 6 A structural diagram of positioning chuck A and related components;

[0045] Figure 7 This is a schematic diagram of the indexing turntable B.

[0046] Figure 8 A structural diagram of the positioning chuck B and related components;

[0047] Figure 9 This is a schematic diagram of the transfer component.

[0048] Figure 10 A structural diagram of the assembly of the transmission roller, hydraulic telescopic cylinder, and positioning pad;

[0049] Figure 11 This is a schematic diagram of the welding assembly.

[0050] Figure 12 This is a structural diagram of the ratchet mechanism and its related components;

[0051] Figure 13 for Figure 12 Detailed diagram after cutting and disassembly.

[0052] In the diagram: 11 Rotary wheel body, 12 Positioning ring, 13 Blade, 14 Positioning table, 2 Transfer positioning assembly, 21 Indexing turntable A, 211 Positioning chuck A, 2111 Slot, 212 Transmission bevel gear A, 213 Assembly port A, 214 Electric telescopic cylinder, 215 Locking key, 22 Indexing turntable B, 221 Positioning chuck B, 2211 Guide rod, 2212 Adjusting screw, 222 Transmission bevel gear B, 223 Assembly port B, 224 Internal gear ring, 2241 Transmission bevel gear C, 225 Rotating gear, 226 Drive motor C, 2261 Drive bevel gear C, 23 Assembly column, 231 Mounting pad, 24 Drive motor A, 241 Drive bevel gear A, 25 Drive motor B, 251 Drive bevel gear C Gear B, 3 Welding assembly, 31 Rotating ring A, 311 Laser welding gun A, 312 Robotic arm A, 32 Rotating ring B, 321 Laser welding gun B, 322 Robotic arm B, 33 Transmission spur gear, 34 Drive motor E, 341 Drive bevel gear D, 35 Drive shaft, 351 Transmission bevel gear D, 361 Drive spur gear, 362 Internal ratchet, 363 Pawl, 364 Spring, 4 Transfer assembly, 41 Assembly bracket, 411 Assembly pad, 412 Arc-shaped positioning seat, 42 Transmission roller, 421 Transmission sprocket, 422 Relief ring groove, 43 Drive motor D, 44 Hydraulic telescopic cylinder, 45 Positioning pad, 51 Base, 52 Machine cover, 521 Loading port, 522 Inlet / outlet port, 523 Mounting bracket. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Example 1

[0055] Please see Figure 1-3 A welding device for a water turbine runner, wherein the water turbine runner includes a runner body 11, a positioning ring 12, and blades 13. The blades 13 are evenly distributed in a ring array and are fixedly connected to the runner body 11 and the positioning ring 12. The runner body 11 and the positioning ring 12 are coaxially arranged and respectively arranged on the inner and outer sides of the blades 13.

[0056] include:

[0057] The transfer positioning component 2 includes an indexing turntable A21 and an indexing turntable B22. The indexing turntable A21 is equipped with two sets of evenly distributed positioning chucks A211, which are used to fix the positioning ring 12. The indexing turntable B22 is equipped with three sets of evenly distributed positioning chucks B221, which are used to fix the main body of the rotating wheel 11 or the positioning table 14. The positioning table 14 is used to evenly arrange and position the blades 13.

[0058] Welding assembly 3 is arranged in conjunction with indexing turntable A21 and indexing turntable B22. Welding assembly 3 includes rotating ring A31 and rotating ring B32. Laser welding gun A311 and laser welding gun B321 are respectively mounted on rotating ring A31 and rotating ring B32. Laser welding gun A311 is used to weld the connection position between positioning ring 12 and blade 13, and laser welding gun B321 is used to weld the connection position between wheel body 11 and blade 13.

[0059] The runner body 11 is used for installation on the turbine main shaft. The blades 13 are fixed to the periphery of the runner body 11 to bear the impact force of the water flow and convert it into the kinetic energy of the main shaft rotation. The positioning ring 12 can enhance the stability of the blade 13 installation and make the turbine runner operate stably in the chamber in a relative rotation manner.

[0060] The indexing turntable A21 is used to receive the positioning ring 12 that has been conveyed and to fix it by the positioning chuck A211. When the indexing turntable A21 rotates as a whole, the fixed positioning chuck A211 is moved to the other side.

[0061] The indexing turntable B22 receives the conveyed positioning table 14 and fixes it with the positioning chuck B221. The blades 13 to be assembled and welded are evenly arranged on the positioning table 14. When the indexing turntable rotates as a whole, the positioning table 14 with blades 13 is kept vertically opposite to the positioning ring 12 on the indexing turntable A21, and the blades 13 and the positioning ring 12 are precisely aligned. Then, through the cooperation of the rotating ring A31 and the laser welding gun A311, the blades 13 and the positioning ring 12 are welded together. Afterwards, the positioning chuck B221 drives the positioning table 14 to move, so that the positioning table 14 is separated from the welded and fixed blades 13. In the reverse rotation state of the indexing turntable B22, the positioning table 14 is reset, so as to replace the positioning table 14 with a new blade 13, or to reload the blades 13 onto the positioning table 14.

[0062] The indexing turntable B22 is also used to receive the conveyed turbine body 11 and fix it with a positioning chuck. When the entire indexing turntable rotates, the turbine body 11 is kept vertically aligned with the positioning ring 12 and blade 13 assembly on the indexing turntable A, and the turbine body 11 and blade 13 are precisely connected. Then, through the cooperation of the rotating ring B32 and the laser welding gun B321, the turbine body 11 and each blade 13 are welded together to form a complete turbine runner. After that, the positioning chuck A211 is released and the turbine runner formed is received by the positioning chuck B221 at the corresponding position. After the indexing turntable B22 is reset, the welded turbine runner is output.

[0063] To ensure the stable installation and coordinated operation of the transfer and positioning components 2 and welding components 3, and to ensure that the welding work of the turbine runner is not affected by the external environment, the following technical solutions are provided.

[0064] It also includes a base 51 and a cover 52. The cover 52 is fixedly installed on the base 51. The transfer and positioning component 2 is assembled on the base 51 and arranged in the cover 52. The welding component 3 is assembled on the inner wall of the cover 52.

[0065] The machine cover 52 has a feeding port 521 and an inlet / outlet port 522. There is one set of feeding ports 521 arranged above the indexing turntable A21, and there are three sets of inlet / outlet ports 522 evenly distributed below the indexing turntable B22.

[0066] The base 51 and the cover 52 ensure the stable installation of the transfer and positioning component 2 and the welding component 3. At the same time, they ensure that the welding of the turbine runner is carried out inside the cover 52, avoiding direct contact with the external environment and ensuring the stable progress of the welding work.

[0067] The feeding port 521 ensures that the positioning ring 12 can enter the inside of the machine cover 52 and be assembled into the positioning chuck A211. In a specific implementation, the positioning ring 12 can be fed to the indexing turntable A21 by a robotic arm or other feeding equipment.

[0068] The inlet / outlet 522 ensures that the positioning table 14, the main body of the turbine 11, and the welded turbine runner can perform corresponding loading and unloading operations to feed or unload the indexing turntable B22.

[0069] Example 2

[0070] Please see Figure 3-8 To ensure that the transfer and positioning component 2 can be stably assembled on the machine tool and that the indexing turntable A21 and indexing turntable B22 can operate independently, the following technical solutions are provided.

[0071] The transfer and positioning assembly 2 also includes an assembly column 23 and drive motors A24 and B25 fixedly mounted on the assembly column 23. Indexing turntables A21 and B22 are rotatably mounted on the assembly column 23. Indexing turntable A21 is arranged directly above indexing turntable B22. Drive motors A24 and B25 are poweredly connected to indexing turntables A21 and B22, respectively.

[0072] Two sets of mounting pads 231 at different heights are fixedly connected to the mounting column 23, and drive motors A24 and B25 are fixedly installed on the corresponding mounting pads 231, and drive bevel gears A241 and B251 are fixedly connected to the output shafts of drive motors A24 and B25, respectively.

[0073] A transmission bevel gear A212 is fixedly connected to the axis of the indexing turntable A21. The transmission bevel gear A212 meshes with the drive bevel gear A241. When the drive motor A24 is working, it can drive the indexing turntable A21 to rotate through the combination of the drive bevel gear A241 and the drive bevel gear B251. Each rotation of the indexing turntable A21 is 180°, so as to realize the position exchange of the two sets of positioning chucks A211 on it.

[0074] A transmission bevel gear B222 is fixed at the axis of the indexing turntable B22. The transmission bevel gear B222 meshes with the drive bevel gear B251. When the drive motor B25 is working, it can drive the indexing turntable B22 to rotate through the combination of the drive bevel gear A241 and the drive bevel gear B251. The indexing turntable B22 rotates 120° each time to realize the position change of the three sets of positioning chucks B221 on it.

[0075] By adjusting the rotation direction of drive motors A24 and B25, the rotation direction of indexing turntables A21 and B22 can be controlled.

[0076] To ensure that the positioning chuck A211 can be stably installed on the indexing turntable A21 and to ensure that the positioning chuck A211 can realize its designed operating functions so that the positioning chuck A211 can drive the fixed component to operate or restrict its operation, the following technical solution is provided.

[0077] The indexing turntable A21 has two sets of assembly ports A213 arranged in a ring array. The positioning chuck A211 is installed in the assembly port A213 in a relatively rotating manner. The outer edge of the positioning chuck A211 is evenly provided with slots 2111. An electric telescopic cylinder 214 arranged radially along the positioning chuck A211 is fixedly installed on the indexing turntable A21. The movable end of the electric telescopic cylinder 214 is fixedly connected with a key 215 that is nested and engaged with the slot 2111.

[0078] The positioning chuck A211 is installed in the assembly port A213 in a relatively rotating manner. When the electric telescopic cylinder 214 is in the retracted state, it can drive the locking key 215 to move to the outside of the positioning chuck A211, so that the locking key 215 separates from the locking groove 2111 and thus cancels the locking and fixing of the positioning chuck A211, thereby allowing the positioning chuck A211 to rotate freely on the indexing turntable A21.

[0079] Normally, the positioning chuck A211 is in a locked state. After the blade 13 and the positioning ring 12 are welded together, and the positioning table 14 is separated from the blade 13, the positioning chuck A211 is in an unlocked state. Because the blade 13 has a certain curvature, it is screwed into place when positioned on the positioning table 14. Therefore, during the separation process of the positioning table 14 and the blade 13, they still need to have axial lifting and rotational movements. Specifically, the positioning table 14 achieves lifting and lowering movements through the positioning chuck B221, while the positioning ring 12, the blade 13, and the positioning chuck A211, which are welded together as a whole, can rotate together to achieve effective separation of the blade 13 from the positioning table 14.

[0080] To ensure that the positioning chuck B221 can be stably installed on the indexing turntable B22 and to ensure that the positioning chuck B221 can realize its designed operating functions so that the positioning chuck B221 can drive the fixed component to move up and down along the axial direction, the following technical solution is provided.

[0081] The indexing turntable B22 has three sets of assembly ports B223 arranged in a ring. The positioning chuck B221 is arranged above the assembly ports B223. Multiple sets of guide rods 2211 and adjusting screws 2212 are fixed to the bottom of the positioning chuck B221. The guide rods 2211 are slidably inserted into the indexing turntable B22.

[0082] An internal gear ring 224 and a rotating gear 225 are rotatably mounted in the indexing turntable B22. The rotating gear 225 is screwed into the adjusting screw 2212 and meshes with the internal gear ring 224. A drive motor C226 is also fixedly mounted at the bottom of the indexing turntable, and the drive motor C226 is powered by the internal gear ring 224.

[0083] At the assembly and welding position, the assembly port A213 on the indexing turntable A21 and the assembly port B223 on the indexing turntable B22 are arranged coaxially, and the positioning chucks A211 and B221 are in a ring structure, which can ensure that the main body 11 of the wheel, the positioning ring 12, and the blade 13 can freely pass through the positioning chucks A211, B221, and the assembly ports A213 and B223, thereby facilitating the installation and disassembly of each component.

[0084] The guide rod 2211 on the positioning chuck B221 can ensure that the positioning chuck and the components fixed on it can be raised and lowered stably in the vertical direction.

[0085] A drive bevel gear C2261 is fixedly connected to the output shaft of the drive motor C226, and a transmission bevel gear C2241 that meshes with the drive bevel gear C2261 is fixedly connected to the outer edge of the internal gear ring 224. The drive motor C226 can drive the internal gear ring 224 to operate stably through the combination of the drive bevel gear C2261 and the transmission bevel gear C2241. The internal gear ring 224 drives each set of rotating gears 225 to operate synchronously. In turn, with the cooperation of the adjusting screw 2212, the lifting and lowering movement of the positioning chuck B221 is stably controlled.

[0086] During the upward movement of the positioning chuck, it can drive the positioning table 14, which is equipped with blades 13, to rise and align with the positioning ring 12, and it can also drive the turbine body 11 to rise and align with the welded blades 13. During the downward movement of the positioning chuck, it can drive the empty positioning table 14 to descend onto the indexing turntable B22, and it can also drive the assembled and welded turbine runner to descend onto the indexing turntable B22.

[0087] Example 3

[0088] Please see Figure 1 , 910. In order to ensure that the turbine runner body 11, the positioning platform 14 and the assembled and welded turbine runner can enter and exit the machine cover 52 through the inlet and outlet 522, and to realize the disassembly and assembly of the turbine runner body 11, the positioning platform 14 and the turbine runner onto the positioning chuck B221, the following technical solutions are provided.

[0089] It also includes a transfer assembly 4 assembled in the inlet / outlet 522. The transfer assembly 4 includes an assembly bracket 41, a transfer roller 42, a drive motor D43, a hydraulic telescopic cylinder 44, and a positioning pad 45. The assembly bracket 41 is fixedly installed at the inlet / outlet 522. Multiple sets of transfer rollers 42 arranged side by side are rotatably installed on the assembly bracket 41. The drive motor is poweredly connected to the transfer rollers 42. The hydraulic telescopic cylinder 44 is fixedly installed on the base and arranged in the vertical direction. The positioning pad 45 is fixedly installed on the movable end of the hydraulic telescopic cylinder 44 and arranged in the gap of the transfer rollers 42.

[0090] The mounting bracket 41 ensures that the transfer rollers 42 are stably installed on it in a relative rotation manner. A mounting pad 411 is fixed to the outside of the mounting bracket 41, and the drive motor D43 is fixedly installed on the mounting pad 411. The output shaft of the drive motor D43 is directly connected to one of the sets of transfer rollers 42. A transmission sprocket 421 is fixed to the end of each set of transfer rollers 42. The transmission sprockets 421 on two adjacent sets of transfer rollers 42 are chain driven by a chain. When the drive motor D43 is running, it can drive each set of transfer rollers 42 to keep running synchronously, thereby realizing the stable transfer of the transfer component at both ends of the mounting bracket 41.

[0091] The positioning pad 45 can be inserted into the main body 11 of the runner or the positioning platform 14. With the help of the hydraulic telescopic cylinder 44, the positioning pad 45 can move up and down, so that the positioning pad 45 can stably support the main body 11 of the runner, the positioning platform 14 or the welded turbine runner and move up and down, so as to realize the stable transfer of components between the transfer drum 42 and the positioning chuck B221.

[0092] To avoid spatial interference between the positioning pad 45 and the transmission roller 42, clearance ring grooves 422 are provided on the transmission rollers 42 arranged on both sides of the positioning pad 45, so that the positioning pad 45 can move up and down normally through the clearance ring grooves 422.

[0093] To ensure that the components transported by the transfer assembly 4 can be nested and inserted into the positioning pad 45 below, so that the two can cooperate and the positioning pad 45 can effectively support the transferred components, an arc-shaped positioning seat 412 is fixedly connected to the inner end of the mounting bracket 41.

[0094] When the main body 11 of the rotating wheel and the positioning platform 14, which are transmitted from the outside of the machine cover 52, reach the inner end of the assembly bracket 41, they are stopped by the arc-shaped positioning seat 412 and no longer move. At this time, the positioning pad 45 is vertically opposite to the main body 11 of the rotating wheel and the positioning platform 14. When the positioning pad 45 is driven to rise by the hydraulic telescopic cylinder 44, it can effectively support the main body 11 of the rotating wheel and the positioning platform 14 and move upward.

[0095] Example 4

[0096] Please see Figure 3 , 10 -13. To ensure that the rotating rings A31 and B32 in the welding assembly 3 can be stably installed in a relative rotation manner, to ensure the stable operation of the rotating rings A31 and B32, and to enable the stable welding of various components of the turbine runner by means of the laser welding guns A311 and B321 on them, the following technical solution is provided.

[0097] A mounting bracket 523 is fixedly connected to the inner wall of the machine cover 52. Rotating rings A31 and B32 are rotatably mounted on the mounting bracket 523 and are respectively arranged on the upper and lower sides of the indexing turntable A21. Transmission spur gears 33 are fixedly connected to the periphery of rotating rings A31 and B32.

[0098] The welding assembly 3 also includes a drive motor E34, a drive shaft 35, and two sets of ratchet mechanisms arranged in opposite directions. The drive motor E34 is fixedly mounted on the mounting bracket 523, the drive shaft 35 is rotatably mounted on the mounting bracket 523 and maintains a power connection with the drive motor E34, the drive shaft 35 is poweredly connected to the two sets of ratchet mechanisms, and the two sets of ratchet mechanisms are poweredly connected to the two sets of transmission spur gears 33 respectively.

[0099] The mounting bracket 523 ensures the stable installation of each component in the welding assembly 3. The drive shaft 35 is arranged in the vertical direction and is fixedly connected to the transmission bevel gear D351. The output shaft of the drive motor E34 is fixedly connected to the drive bevel gear D341, which meshes with the transmission bevel gear D351.

[0100] Rotating ring A31 and rotating ring B32 are arranged concentrically with positioning chucks A211 and B221 for assembling the turbine runner.

[0101] When the drive motor E34 drives the drive shaft 35 to rotate, depending on the direction of rotation, different power can be transmitted through the corresponding ratchet mechanism to drive the rotating ring A31 or rotating ring B32 to rotate stably, thereby driving the laser welding gun A311 and laser welding gun B321 mounted on them to rotate around the axis of the rotating wheel body 11 and the positioning ring 12, thereby realizing the welding work.

[0102] To ensure that the recording mechanism can achieve the purpose of power splitting and transmission, so as to drive the rotating ring A31 or the rotating ring B32 to operate independently, the following technical solution is provided.

[0103] The ratchet mechanism includes a drive spur gear 361, an inner ratchet 362, a pawl 363, and a spring 364. The drive spur gear 361 is rotatably mounted on the mounting bracket 523 and meshes with the corresponding transmission spur gear 33. The inner ratchet 362 is coaxially fixed to the drive spur gear 361. The drive shaft 35 passes through the axis of the drive spur gear 361. The pawl 363 is rotatably mounted on the periphery of the drive shaft 35 and meshes with the inner ratchet 362. The spring 364 is arranged between the pawl 363 and the drive shaft 35.

[0104] When the drive shaft 35 is running, it can drive the pawl 363 on it to run. Since the pawls 363 in the two sets of ratchet mechanisms are arranged in opposite directions, the drive shaft 35 running around a specific direction can only drive the corresponding inner ratchet 362 to run through the corresponding pawl 363. Then, through the combination of the drive spur gear 361 and the transmission spur gear 33, the rotating ring A31 or the rotating ring B32 is driven to run stably, thereby driving the laser welding gun A311 or the laser welding gun B321 to run around the axis of the turbine runner.

[0105] Since the welding trajectory of the blade 13, the positioning ring 12, and the main body of the rotor 11 is a relatively complex curve and there is a height difference, the following technical solution is provided to ensure that the laser welding gun A311 and the laser welding gun B321 can accurately weld the blade 13.

[0106] A robotic arm A312 is fixedly mounted on a rotating ring A31, and a laser welding gun A311 is fixedly mounted on the robotic arm A312. A robotic arm B322 is fixedly mounted on a rotating ring B32, and a laser welding gun B321 is fixedly mounted on the robotic arm B322.

[0107] The robotic arms A312 and B322 increase the degrees of freedom of the laser welding guns A311 and B321, thereby ensuring that the blade 13 can be precisely welded.

[0108] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0109] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A welding device for a water turbine runner, the water turbine runner comprising a runner body (11), a positioning ring (12), and blades (13), wherein the blades (13) are evenly distributed in a ring array and fixedly connected to the runner body (11) and the positioning ring (12), and the runner body (11) and the positioning ring (12) are coaxially arranged and respectively arranged on the inner and outer sides of the blades (13); Its features are, include: The transfer positioning component (2) includes an indexing turntable A (21) and an indexing turntable B (22). The indexing turntable A (21) is equipped with two sets of evenly distributed positioning chucks A (211), which are used to fix the positioning ring (12). The indexing turntable B (22) is equipped with three sets of evenly distributed positioning chucks B (221), which are used to fix the main body of the rotating wheel (11) or the positioning table (14). The positioning table (14) is used to evenly arrange and position the blade (13). Welding assembly (3), which is arranged in conjunction with indexing turntable A (21) and indexing turntable B (22), the welding assembly (3) includes rotating ring A (31) and rotating ring B (32), and laser welding gun A (311) and laser welding gun B (321) are respectively mounted on rotating ring A (31) and rotating ring B (32). Laser welding gun A (311) is used to weld the connection position between positioning ring (12) and blade (13), and laser welding gun B (321) is used to weld the connection position between wheel body (11) and blade (13).

2. The turbine runner welding device according to claim 1, characterized in that: It also includes a base (51) and a cover (52), the cover (52) being fixedly installed on the base (51), the transfer positioning component (2) being assembled on the base (51) and arranged in the cover (52), and the welding component (3) being assembled on the inner wall of the cover (52). The machine cover (52) is provided with a feeding port (521) and an inlet / outlet port (522). The feeding port (521) is provided in one set and arranged above the indexing turntable A (21). The inlet / outlet port (522) is provided in three sets and evenly distributed below the indexing turntable B (22).

3. The turbine runner welding device according to claim 2, characterized in that: The transfer positioning component (2) also includes an assembly column (23) and a drive motor A (24) and a drive motor B (25) fixedly installed on the assembly column (23). The indexing turntable A (21) and the indexing turntable B (22) are rotatably installed on the assembly column (23). The indexing turntable A (21) is arranged directly above the indexing turntable B (22). The drive motor A (24) and the drive motor B (25) are respectively poweredly connected to the indexing turntable A (21) and the indexing turntable B (22).

4. The turbine runner welding device according to claim 3, characterized in that: The indexing turntable A (21) has two sets of assembly ports A (213) arranged in a ring array. The positioning chuck A (211) is installed in the assembly port A (213) in a relatively rotating manner. The outer edge of the positioning chuck A (211) is evenly provided with slots (2111). An electric telescopic cylinder (214) arranged radially along the positioning chuck A (211) is fixedly installed on the indexing turntable A (21). The movable end of the electric telescopic cylinder (214) is fixedly connected with a key (215) that is nested and engaged with the slot (2111).

5. The turbine runner welding device according to claim 3, characterized in that: The indexing turntable B (22) has three sets of assembly ports B (223) arranged in a ring. The positioning chuck B (221) is arranged above the assembly ports B (223). The bottom of the positioning chuck B (221) is fixed with multiple sets of guide rods (2211) and adjusting screws (2212). The guide rods (2211) are slidably inserted into the indexing turntable B (22). An internal gear ring (224) and a rotating gear (225) are rotatably mounted in the indexing turntable B (22). The rotating gear (225) is screwed into the adjusting screw (2212) and meshed with the internal gear ring (224). A drive motor C (226) is also fixedly mounted at the bottom of the indexing turntable. The drive motor C (226) is powered to the internal gear ring (224).

6. The turbine runner welding device according to claim 5, characterized in that: It also includes a transfer assembly (4) assembled in the inlet / outlet (522). The transfer assembly (4) includes an assembly bracket (41), a transfer roller (42), a drive motor D (43), a hydraulic telescopic cylinder (44), and a positioning pad (45). The assembly bracket (41) is fixedly installed at the inlet / outlet (522). Multiple sets of transfer rollers (42) arranged side by side are rotatably installed on the assembly bracket (41). The drive motor is poweredly connected to the transfer rollers (42). The hydraulic telescopic cylinder (44) is fixedly installed on the base and arranged in the vertical direction. The positioning pad (45) is fixedly installed at the movable end of the hydraulic telescopic cylinder (44) and arranged in the gap of the transfer rollers (42).

7. The turbine runner welding device according to claim 6, characterized in that: An arc-shaped positioning seat (412) is fixed to the inner end of the assembly bracket (41).

8. The turbine runner welding device according to claim 2, characterized in that: The inner wall of the machine cover (52) is fixedly connected to the mounting bracket (523). The rotating ring A (31) and rotating ring B (32) are rotatably mounted on the mounting bracket (523) and respectively arranged on the upper and lower sides of the indexing turntable A (21). The outer periphery of the rotating ring A (31) and rotating ring B (32) is fixedly connected to the transmission spur gear (33). The welding assembly (3) also includes a drive motor E (34), a drive shaft (35), and two sets of ratchet mechanisms arranged in opposite directions. The drive motor E (34) is fixedly mounted on the mounting bracket (523). The drive shaft (35) is rotatably mounted on the mounting bracket (523) and maintains a power connection with the drive motor E (34). The drive shaft (35) is poweredly connected to the two sets of ratchet mechanisms. The two sets of ratchet mechanisms are poweredly connected to the two sets of transmission spur gears (33) respectively.

9. The turbine runner welding device according to claim 8, characterized in that: The ratchet mechanism includes a drive spur gear (361), an inner ratchet (362), a pawl (363), and a spring (364). The drive spur gear (361) is rotatably mounted on the mounting bracket (523) and meshes with the corresponding transmission spur gear (33). The inner ratchet (362) is coaxially fixed to the drive spur gear (361). The drive shaft (35) passes through the axis of the drive spur gear (361). The pawl (363) is rotatably mounted on the periphery of the drive shaft (35) and meshes with the inner ratchet (362). The spring (364) is arranged between the pawl (363) and the drive shaft (35).

10. A turbine runner welding device according to claim 9, characterized in that: A robotic arm A (312) is fixedly installed on the rotating ring A (31), and a laser welding gun A (311) is fixedly installed on the robotic arm A (312). A robotic arm B (322) is fixedly installed on the rotating ring B (32), and a laser welding gun B (321) is fixedly installed on the robotic arm B (322).

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