A turbocharger rotor shaft welding device

Abstract

This invention belongs to the field of rotor shaft welding technology, specifically disclosing a turbocharger rotor shaft welding device, including a fixed base, a self-convection cooling clamping device, and an anti-deformation fastening mechanism. Through the precise cooperation of the anti-deformation contact wheel and the embedded expansion anti-displacement component, a comprehensive constraint system of "shaft center positioning - blade support - radial anti-deformation" is constructed in three-dimensional space, completely solving the deformation problem caused by traditional single-point clamping. Furthermore, it innovatively integrates the principle of natural convection cooling with corrugated copper alloy heat sinks, forming a self-driven high-efficiency heat exchange system through thermodynamic flow channel optimization design, improving heat dissipation efficiency without additional energy consumption, fundamentally solving the industry problem of welding hot cracking. Through the creative integration of multi-point mechanical positioning and microchannel convection cooling, not only is the centering accuracy of the welding guaranteed, but the quality of rotor shaft welding is also significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of rotor shaft welding technology, specifically referring to a turbocharger rotor shaft welding device. Background Technology

[0002] As a core component for improving engine efficiency, the welding quality of the rotor shaft and impeller body of a turbocharger directly affects the overall performance and reliability of the machine. In traditional welding processes, the rotor shaft and impeller body need to be centered and fixed using clamps before welding. However, this process suffers from several technical bottlenecks: First, the rotor shaft is a slender structure, and traditional single-point clamping easily leads to bending deformation due to welding thermal stress, resulting in dynamic imbalance. Second, the impeller blades are thin and closely spaced; conventional clamping easily compresses the blades, causing microscopic deformation, and the high temperature during welding can easily cause blade displacement, resulting in weld misalignment. Third, the high heat during welding is concentrated in the clamping area; insufficient heat dissipation can easily lead to changes in the metal lattice around the weld, generating microcracks and affecting fatigue life. While existing technologies attempt to use water-cooled clamps or forced air cooling for cooling, these methods are complex and difficult to achieve uniform heat dissipation, especially failing to fully utilize the efficiency of natural convection heat transfer. Therefore, there is an urgent need for a welding device that can achieve high-precision centered clamping, multi-point deformation-resistant fixing, and efficient utilization of natural convection heat dissipation. Summary of the Invention

[0003] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a turbocharger rotor shaft welding device. Through the precise cooperation of anti-deformation contact wheels and embedded expansion anti-displacement components, a comprehensive constraint system of "shaft positioning - blade support - radial anti-deformation" is constructed in three-dimensional space, completely solving the deformation problem caused by traditional single-point clamping. Furthermore, it innovatively integrates the principle of natural convection heat dissipation with corrugated copper alloy heat sinks, forming a self-driven high-efficiency heat exchange system through optimized thermodynamic flow channel design. This improves heat dissipation efficiency without additional energy consumption, fundamentally solving the industry problem of welding hot cracking. The creative fusion of multi-point mechanical positioning and microchannel convection heat dissipation not only ensures the alignment accuracy of the welding but also significantly improves the quality of rotor shaft welding, further enhancing the service life of the turbocharger.

[0004] The technical solution adopted by the present invention is as follows: The present invention provides a turbocharger rotor shaft welding device, including a fixed base, a self-convection cooling clamping device and an anti-deformation fastening mechanism. The self-convection cooling clamping device is disposed on the fixed base, and the anti-deformation fastening mechanism is disposed on the fixed base. The self-convection cooling clamping device includes a driving component, a self-convection cooling block and a supporting component. The driving component is disposed on the fixed base, the self-convection cooling block is sleeved on the driving component, the self-convection cooling block is engaged and slidably disposed on the fixed base, and the supporting component is disposed on the fixed base.

[0005] Furthermore, the self-convection heat dissipation clamping block includes a clamping block, an embedded expansion anti-displacement component, and a self-convection heat dissipation component. The clamping block is sleeved on the driving component, the clamping block is engaged and slidably mounted on the fixed base, the embedded expansion anti-displacement component is mounted on the clamping block, and the self-convection heat dissipation component is mounted on the clamping block.

[0006] Furthermore, the self-convection heat dissipation component includes a convection heat dissipation channel and copper alloy heat sinks. The convection heat dissipation channel is mounted on the clamping block and is inclined to automatically guide the splashed welding slag and allow it to be naturally discharged by gravity. When the heat generated by welding is transferred to the inner wall of the convection heat dissipation channel, the air inside the channel is heated and its density decreases. This decrease in density generates an upward buoyancy (the core driving force of natural convection). The heated, low-density air flows upward along the radial path of the convection heat dissipation channel and is finally discharged into the environment through the outlet of the convection heat dissipation channel. Simultaneously, the convection... After the air in the hot channel is exhausted, a local negative pressure is formed. Low-temperature cold air in the environment enters the convection heat dissipation channel through the inlet at the outer end of the convection heat dissipation channel. This cycle continues, forming a natural convection loop with hot air out and cold air in. The copper alloy heat sink is set on the inner wall of the convection heat dissipation channel. The copper alloy heat sink is set in a wave shape, which can increase the contact area between the hot air and the copper alloy heat sink, and can more fully transfer heat to the air in the convection heat dissipation channel. At the same time, the wave-shaped structure can also "disturb" the airflow, break the "stagnant layer" of air on the wall, and further improve the heat exchange efficiency.

[0007] The embedded expansion anti-displacement component includes a rotation adjustment groove, an embedded expansion plate, and a fastening stud. The rotation adjustment groove is located on the clamping block, the embedded expansion plate is rotatably located in the rotation adjustment groove, and the fastening stud is rotatably located in the clamping block. The fastening stud contacts the embedded expansion plate to lock it in place. The impeller body welded to the rotor shaft can be placed on the locking embedded expansion plate, with the embedded expansion plate positioned between two adjacent blades of the impeller body. Rotating the embedded expansion plate causes it to press against the sidewalls of the two adjacent blades, preventing the impeller body from rotating and shifting during welding, thus further improving welding accuracy. Rotating the fastening stud causes it to press and fix the embedded expansion plate in place.

[0008] Preferably, the clamping block has dovetail blocks on its two opposite sidewalls, and the fixing seat has dovetail grooves on its two opposite inner sidewalls, with the dovetail blocks being engaged and slidably disposed in the dovetail grooves.

[0009] Furthermore, the support component includes a support rod and a support plate. The support rod is mounted on a fixed base, and the support plate is located at the movable end of the support rod to support the bottom end of the impeller body.

[0010] As a further preferred embodiment of the present invention, the driving component includes a driving screw and a driving motor. The driving screw is rotatably mounted on a fixed base, and the threads at both ends of the driving screw are in opposite directions. The driving motor is mounted on the fixed base, and the output end of the driving motor is connected to the driving screw. The clamping block is sleeved on the driving screw, and the clamping block is threadedly connected to the driving screw.

[0011] Further, the anti-deformation fastening mechanism includes a height-adjustable support, a fastening device, and an anti-deformation component. The height-adjustable support is mounted on a fixed base, the fastening device is mounted on the height-adjustable support, and the anti-deformation component is mounted on the fastening device. The fastening device includes a fixed housing, a fastening screw, a drive block, a linkage gear disc, a follower block, a fastening plate, and a fastening motor. The fixed housing is mounted on the height-adjustable support and has a drive groove. The fastening screw passes through the fixed housing and rotatably resides in the drive groove. The drive block is engaged and slidably located in the drive groove and is sleeved on the fastening screw. The drive block and the fastening screw are threadedly connected. The linkage gear disc rotatably resides in the fixed housing and meshes with the drive block. The drive groove has... The three sets of components are as follows: the follower block is slidably engaged in the drive groove; the follower block is meshed with the linkage gear disc; the fixed shell has a fastening groove; the fastening plate is slidably engaged in the fastening groove; the drive block and follower block have drive teeth; the fastening plate has meshing teeth that mesh with the drive teeth; the fastening motor is mounted on the fixed shell; and the output end of the fastening motor is connected to the fastening screw. The rotation of the fastening motor drives the fastening screw to rotate, which in turn drives the drive block to move along the drive groove. The movement of the drive block drives the linkage gear disc to rotate, which in turn drives the follower block to move along the drive groove. Simultaneously, the movement of the drive block drives the fastening plate to move along the fastening groove, and the movement of the follower block drives the fastening plate to move along the fastening groove, thereby clamping and fixing the rotor shaft.

[0012] The anti-deformation component includes a lifting electric actuator, a fixed frame, and anti-deformation contact wheels. The lifting electric actuator is mounted on a fastening plate, the fixed frame is mounted on the movable end of the lifting electric actuator, and the anti-deformation contact wheels are rotatably mounted on the fixed frame. The position of the anti-deformation contact wheels can be adjusted by the lifting electric actuator, so that each anti-deformation contact wheel is located at a different position on the rotor shaft, thereby achieving the technical effect of multi-point contact clamping and anti-deformation of the rotor shaft.

[0013] Furthermore, the height adjustment support includes a height adjustment electric actuator and a fixing plate. The height adjustment electric actuator is mounted on a fixed base, the fixing plate is mounted on the movable end of the height adjustment electric actuator, and the fixing shell is mounted on the fixing plate.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows:

[0015] 1. By combining the convection heat dissipation channel with the wave-shaped copper alloy heat sink, the hot air buoyancy effect is used to form a self-driven airflow circulation, which continuously removes heat from the welding hot zone; the wave-shaped heat sink greatly increases the heat exchange area while destroying the airflow boundary layer, improving heat exchange efficiency, significantly reducing the temperature of the clamping area, and fundamentally avoiding micro-cracks in the rotor shaft and impeller body caused by local overheating.

[0016] 2. An embedded expansion plate is inserted into the gap between the impeller blades and the embedded expansion plate is pressed by fastening studs. This not only avoids the direct pressure on the blade surface by traditional clamps, but also achieves three-dimensional support and limitation of the bottom and sides of the impeller body through the synergistic action of the supporting electric push rod and the clamping block, completely eliminating circumferential displacement during the welding process and improving the concentricity of the weld.

[0017] 3. By fastening the motor to drive the drive block, the drive block drives the linkage gear plate, and the linkage plate drives the follower block to move synchronously in multiple directions, the fastening plate is precisely displaced along the fastening groove to achieve the center positioning and clamping of the rotor shaft; combined with the lifting electric push rod to adjust the height position of the anti-deformation contact wheel, a multi-point contact support for the rotor shaft is formed, which effectively suppresses the radial deformation of slender shaft parts during the welding process and ensures dynamic balance stability.

[0018] 4. The overall lifting and lowering of the fastening device is driven by the height-adjustable electric actuator, which can adapt to the alignment requirements of different specifications of rotor shafts and impeller bodies. Quick changeover can be achieved without changing the fixture module, improving the versatility of the equipment and production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a turbocharger rotor shaft welding device proposed in this invention;

[0020] Figure 2 This is a left view of a turbocharger rotor shaft welding device proposed in this invention;

[0021] Figure 3 This is a front view of a turbocharger rotor shaft welding device proposed in this invention;

[0022] Figure 4 This is a top view of a turbocharger rotor shaft welding device proposed in this invention;

[0023] Figure 5 This is a bottom view of a turbocharger rotor shaft welding device proposed in this invention;

[0024] Figure 6 This is a partial structural schematic diagram of a self-convection cooling clamping device.

[0025] Figure 7 This is a schematic diagram of the clamping block.

[0026] Figure 8 This is a cross-sectional view of the clamping block;

[0027] Figure 9 This is a structural schematic diagram of the support component;

[0028] Figure 10 This is a schematic diagram of the fastening device.

[0029] Figure 11 This is a schematic diagram of the internal structure of the fastening device;

[0030] Figure 12 This is a schematic diagram of the fixed shell structure;

[0031] Figure 13 This is a cross-sectional schematic diagram of the fixed shell;

[0032] Figure 14 This is a schematic diagram of the drive block structure;

[0033] Figure 15 This is a structural schematic diagram of the fastening plate;

[0034] Figure 16 This is a schematic diagram of the fixed base.

[0035] Among them, 1. Fixed base, 2. Self-convection cooling clamping device, 3. Anti-deformation fastening mechanism, 4. Driving component, 5. Self-convection clamping heat sink, 6. Support component, 7. Clamping block, 8. Embedded expansion anti-displacement component, 9. Self-convection heat sink, 10. Convection heat dissipation channel, 11. Copper alloy heat sink, 12. Rotation adjustment groove, 13. Embedded expansion plate, 14. Fastening stud, 15. Dovetail block, 16. Dovetail groove, 17. Supporting electric actuator, 18. Support plate, 19. Driving component, 10. Self-convection cooling clamping device, 11. Anti-deformation fastening mechanism, 12. Self-convection clamping heat sink, 13. Embedded expansion plate, 14. Fastening stud, 15. Dovetail block, 16. Dovetail groove, 17. Supporting electric actuator, 18. Supporting plate, 19. Driving component, 10. Self-convection clamping device, 11. Self-convection clamping device, 12. Self-convection clamping heat sink, 13. Self-convection clamping device, 14. Self-convection clamping device, 15. Self-convection clamping device, 16. Self-convection clamping device, 17. Self-convection clamping device, 18. Self-convection clamping device, 19. Self-convection clamping device, 10. Self-convection clamping device, 10. Self-convection clamping device, 10. Self-convection clamping device, 11. Self-convection clamping device, 12. Self-convection clamping device, 13. Self-convection clamping device, 14. Self-convection clamping device 20. Drive motor, 21. Height adjustment support, 22. Fastening device, 23. Anti-deformation component, 24. Fixed shell, 25. Fastening screw, 26. Drive block, 27. Linkage gear plate, 28. Follower block, 29. Fastening plate, 30. Fastening motor, 31. Drive slot, 32. Fastening slot, 33. Drive gear, 34. Meshing gear, 35. Lifting electric actuator, 36. Fixed frame, 37. Anti-deformation contact wheel, 38. Height adjustment electric actuator, 39. Fixed plate.

[0036] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] like Figure 1 , Figure 4 , Figure 5 , Figure 16 As shown, the present invention provides a turbocharger rotor shaft welding device, including a fixed base 1, a self-convection cooling clamping device 2 and an anti-deformation fastening mechanism 3. The self-convection cooling clamping device 2 is disposed on the fixed base 1, and the anti-deformation fastening mechanism 3 is disposed on the fixed base 1.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15As shown, the anti-deformation fastening mechanism 3 includes a height adjustment support 21, a fastening device 22, and an anti-deformation component 23. The height adjustment support 21 is mounted on the fixed base 1, the fastening device 22 is mounted on the height adjustment support 21, and the anti-deformation component 23 is mounted on the fastening device 22. The height adjustment support 21 includes a height adjustment electric actuator 38 and a fixing plate 39. The height adjustment electric actuator 38 is mounted on the fixed base 1, and the fixing plate 39 is located at the movable end of the height adjustment electric actuator 38. The fastening device 22 includes a fixed housing 24, a fastening screw 25, a drive block 26, a linkage gear 27, a follower block 28, a fastening plate 29, and a fastening element. The motor 30 has a fixed housing 24 mounted on a fixed plate 39. The fixed housing 24 has a drive groove 31. A fastening screw 25 passes through the fixed housing 24 and rotatably resides in the drive groove 31. A drive block 26 is engaged and slidably mounted in the drive groove 31 and is sleeved on the fastening screw 25. The drive block 26 and the fastening screw 25 are threadedly connected. A linkage gear disc 27 is rotatably mounted in the fixed housing 24 and meshes with the drive block 26. The drive groove 31 has three sets of drive grooves. Follower blocks 28 are engaged and slidably mounted in the drive grooves 31 and mesh with the linkage gear discs 27. The fixed housing 24 has a fastening groove 32. The fastening plate 29 is slidably engaged in the fastening groove 32. The driving block 26 and follower block 28 are provided with driving teeth 33, and the fastening plate 29 is provided with meshing teeth 34, which mesh with the driving teeth 33. The fastening motor 30 is mounted on the fixed housing 24, and its output end is connected to the fastening screw 25. The rotation of the fastening motor 30 drives the fastening screw 25 to rotate, which in turn drives the driving block 26 to move along the driving groove 31. The movement of the driving block 26 drives the linkage gear 27 to rotate, which in turn drives the follower block 28 to move along the driving groove 31. Simultaneously, the movement of the driving block 26 drives the fastening screw 25 to rotate. The fixed plate 29 moves along the fastening groove 32, and the follower block 28 moves, causing the fixed plate 29 to move along the fastening groove 32, thereby clamping and fixing the rotor shaft. The anti-deformation component 23 includes a lifting electric push rod 35, a fixing frame 36, and an anti-deformation contact wheel 37. The lifting electric push rod 35 is located on the fastening plate 29, the fixing frame 36 is located at the movable end of the lifting electric push rod 35, and the anti-deformation contact wheel 37 is rotatably located on the fixing frame 36. The position of the anti-deformation contact wheel 37 can be adjusted by the lifting electric push rod 35, so that each anti-deformation contact wheel 37 is located at a different position on the rotor shaft, thereby achieving the technical effect of multi-point contact clamping and anti-deformation of the rotor shaft.

[0041] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 16As shown, the self-convection cooling clamping device 2 includes a driving component 4, a self-convection clamping heat sink 5, and a supporting component 6. The driving component 4 is mounted on a fixed base 1, and the self-convection clamping heat sink 5 is sleeved on the driving component 4 and slidably engaged on the fixed base 1. The supporting component 6 is mounted on the fixed base 1. The self-convection clamping heat sink 5 includes a clamping block 7, an embedded expansion anti-displacement component 8, and a self-convection heat sink 9. The clamping block 7 is sleeved on the driving component 4 and slidably engaged on the fixed base 1. The embedded expansion anti-displacement component 8 is mounted on the clamping block 7, and the self-convection heat sink 9 is mounted on the clamping block 7. The self-convection heat sink 9 includes a convection heat dissipation channel 10 and a copper alloy heat sink 11. The convection heat dissipation channel 10 is mounted on the clamping block 7, and the convection heat dissipation channel 10 is mounted on the copper alloy heat sink 11. The 0 is tilted, which can automatically guide the splashed welding and remove slag naturally by gravity. When the heat generated by welding is transferred to the inner wall of the convection heat dissipation channel 10, the air in the convection heat dissipation channel 10 is heated and its density decreases. Due to the decrease in density, an upward buoyancy is generated (the core driving force of natural convection). The heated low-density air flows upward along the radial path of the convection heat dissipation channel 10 and is finally discharged into the environment through the outlet of the convection heat dissipation channel 10. At the same time, the air in the convection heat dissipation channel 10 is discharged and a local negative pressure is formed. The low temperature cold air in the environment is replenished into the convection heat dissipation channel 10 through the inlet at the outer end of the convection heat dissipation channel 10. This cycle forms a continuous natural convection loop with hot air out and cold air in. Copper alloy heat sink 11 Located on the inner wall of the convection heat dissipation channel 10, the copper alloy heat sink 11 is arranged in a wave shape, which increases the contact area between hot air and the copper alloy heat sink 11, and can more fully transfer heat to the air in the convection heat dissipation channel 10; at the same time, the wave-shaped structure can also "disturb" the airflow, break the "stagnant layer" of air on the wall, and further improve the heat exchange efficiency; the embedded expansion anti-displacement component 8 includes a rotation adjustment groove 12, an embedded expansion plate 13, and a fastening stud 14. The rotation adjustment groove 12 is located on the clamping block 7, the embedded expansion plate 13 is rotatably located in the rotation adjustment groove 12, and the fastening stud 14 is rotatably located in the clamping block 7. The fastening stud 14 contacts the embedded expansion plate 13 to lock the embedded expansion plate 13; it can be welded to the rotor shaft. The impeller body is placed on the locking embedded expansion plate 13, and the embedded expansion plate 13 is placed between two adjacent blades of the impeller body. The embedded expansion plate 13 is rotated to press against the side wall of the two adjacent blades to prevent the impeller body from rotating and shifting during the welding process, thereby further improving the welding accuracy. The fastening stud 14 is rotated to press and fix the embedded expansion plate 13. The clamping block 7 is provided with dovetail blocks 15 on two opposite side walls, and the fixed seat 1 is provided with dovetail grooves 16 on two opposite inner side walls. The dovetail blocks 15 are engaged and slidably disposed in the dovetail grooves 16. The support member 6 includes a support electric actuator 17 and a support plate 18. The support electric actuator 17 is disposed on the fixed seat 1, and the support plate 18 is disposed at the movable end of the support electric actuator 17 to support the bottom end of the impeller body.The driving component 4 includes a driving screw 19 and a driving motor 20. The driving screw 19 is rotatably mounted on the fixed base 1, and the threads at both ends of the driving screw 19 are in opposite directions. The driving motor 20 is mounted on the fixed base 1, and the output end of the driving motor 20 is connected to the driving screw 19. A clamping block 7 is sleeved on the driving screw 19 and is threadedly connected to the driving screw 19.

[0042] In practical use, the rotor shaft to be welded is placed between the fastening plates 29. The fastening motor 30 is started, and the rotation of the fastening motor 30 drives the fastening screw 25 to rotate. The rotation of the fastening screw 25 drives the drive block 26 to move along the drive groove 31. The movement of the drive block 26 drives the linkage gear disc 27 to rotate. The rotation of the linkage gear disc 27 drives the follower block 28 to move along the drive groove 31. The movement of the drive block 26 simultaneously drives the fastening plate 29 to move along the fastening groove 32. The movement of the follower block 28 drives the fastening plate 29 to move along the fastening groove 32, thereby clamping and fixing the rotor shaft. The movement of the fastening plate 29 drives the lifting electric push rod 35 to move. The movement of the lifting electric push rod 35 drives the fixing frame 36 to move. The movement of the fixing frame 36 drives the anti-rotor... The deformation-resistant contact wheel 37 moves, clamping the rotor shaft. The position of the deformation-resistant contact wheel 37 can be adjusted by the lifting electric actuator 35, so that each deformation-resistant contact wheel 37 is located at a different position on the rotor shaft, achieving the technical effect of multi-point contact clamping and anti-deformation of the rotor shaft. The impeller body to be welded is placed between the clamping blocks 7, and the embedded expansion plate 13 is placed between two adjacent blades of the impeller body. The support electric actuator 17 is activated, and the lifting and lowering of the support electric actuator 17 drives the support plate 18 to rise and fall, so that the support plate 18 supports the bottom wall of the impeller body. The drive motor 20 is activated, and the rotation of the drive motor 20 drives the drive screw 19 to rotate. The rotation of the drive screw 19 drives the clamping block 7 to move along the dovetail groove 16. The impeller body is clamped by moving the embedded expansion plate 13, which is then rotated to press against the sidewalls of two adjacent blades, preventing the impeller body from rotating and shifting during welding, thus improving welding accuracy. The fastening stud 14 is rotated to press and fix the embedded expansion plate 13. The height adjustment electric actuator 38 is activated, which raises and lowers the fixing plate 39, which in turn raises and lowers the fastening device 22, which in turn raises and lowers the rotor shaft, aligning it with the center of the impeller body for welding. The heat generated during welding is transferred to the inner wall of the convection cooling channel 10, causing the air inside the channel to heat up. As the temperature decreases, the reduced density generates upward buoyancy (the core driving force of natural convection). The heated, low-density air flows upward along the radial path of the convection heat dissipation channel 10 and is eventually discharged into the environment through the outlet of the convection heat dissipation channel 10. At the same time, the air discharged from the convection heat dissipation channel 10 creates a local negative pressure. Low-temperature cold air from the environment enters the convection heat dissipation channel 10 through the inlet at the outer end of the convection heat dissipation channel 10. This cycle continues, forming a continuous natural convection loop with hot air exiting and cold air entering. The copper alloy heat sink 11, which is arranged in a wave shape, can increase the contact area between the hot air and the copper alloy heat sink 11, and can more fully transfer heat to the air in the convection heat dissipation channel 10.Simultaneously, the wave-shaped structure can also "disturb" the airflow, breaking the "stagnant layer" of air on the wall, further improving heat exchange efficiency, and preventing excessive heat at the clamping end from causing cracks in the rotor shaft and impeller body at the weld. This is the specific working process of the invention; repeat this step for subsequent use.

[0043] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the foregoing and its equivalents.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A welding device for a turbocharger rotor shaft, characterized in that: The device includes a fixed base (1), a self-convection cooling clamping device (2), and an anti-deformation fastening mechanism (3). The self-convection cooling clamping device (2) is mounted on the fixed base (1), and the anti-deformation fastening mechanism (3) is mounted on the fixed base (1). The self-convection cooling clamping device (2) includes a driving component (4), a self-convection clamping heat dissipation block (5), and a supporting component (6). The driving component (4) is mounted on the fixed base (1), and the self-convection clamping heat dissipation block (5) is mounted on the fixed base (1). (5) Sleeve onto the driving component (4), the self-convection clamping heat sink (5) is engaged and slidably disposed on the fixed base (1), and the supporting component (6) is disposed on the fixed base (1); the self-convection clamping heat sink (5) includes a clamping block (7), an embedded expansion anti-displacement component (8), and a self-convection heat sink (9), the clamping block (7) is sleeved onto the driving component (4), the clamping block (7) is engaged and slidably disposed on the fixed base (1), and the embedded expansion anti-displacement component (9) is engaged and slidably disposed on the fixed base (1), and the self-convection clamping heat sink (5) is disposed on the driving component (4); the self-convection clamping heat sink (5) includes a clamping block (7), an embedded expansion anti-displacement component (8), and a self-convection heat sink (9), the clamping block (7) is sleeved onto the driving component (4), the clamping block (7) is engaged and slidably disposed on the fixed base (1), and the embedded expansion anti-displacement component (9) is engaged and slidably disposed on the fixed base (1), the self-convection clamping heat sink (5) is engaged and slidably disposed on the fixed base (1), and the self-convection clamping heat sink (5) is disposed on the fixed base (1); the self-convection clamping heat sink (5) includes a clamping block (7), an embedded expansion anti-displacement component (8), and a self-convection heat sink (9). An expansion support anti-displacement component (8) is provided on the clamping block (7), and the self-convection heat dissipation component (9) is provided on the clamping block (7); the self-convection heat dissipation component (9) includes a convection heat dissipation channel (10) and a copper alloy heat sink (11), the convection heat dissipation channel (10) is provided on the clamping block (7), the convection heat dissipation channel (10) is inclined, and the copper alloy heat sink (11) is provided on the inner wall of the convection heat dissipation channel (10). The piece (11) is arranged in a wave shape; the embedded expansion anti-displacement component (8) includes a rotation adjustment groove (12), an embedded expansion plate (13) and a fastening stud (14). The rotation adjustment groove (12) is located on the clamping block (7). The embedded expansion plate (13) is rotatably located in the rotation adjustment groove (12). The fastening stud (14) is rotatably located in the clamping block (7). The fastening stud (14) is in contact with the embedded expansion plate (13).

2. The turbocharger rotor shaft welding device according to claim 1, characterized in that: The clamping block (7) has dovetail blocks (15) on its two opposite sidewalls, and the fixing seat (1) has dovetail grooves (16) on its two opposite inner sidewalls. The dovetail blocks (15) are engaged and slidably disposed in the dovetail grooves (16).

3. The turbocharger rotor shaft welding device according to claim 2, characterized in that: The support member (6) includes a support electric actuator (17) and a support plate (18). The support electric actuator (17) is mounted on a fixed base (1), and the support plate (18) is mounted on the movable end of the support electric actuator (17).

4. The turbocharger rotor shaft welding device according to claim 3, characterized in that: The driving component (4) includes a driving screw (19) and a driving motor (20). The driving screw (19) is rotatably mounted on a fixed base (1). The threads at both ends of the driving screw (19) are in opposite directions. The driving motor (20) is mounted on the fixed base (1). The output end of the driving motor (20) is connected to the driving screw (19). The clamping block (7) is sleeved on the driving screw (19) and is threadedly connected to the driving screw (19).

5. The turbocharger rotor shaft welding device according to claim 4, characterized in that: The anti-deformation fastening mechanism (3) includes a height adjustment support (21), a fastening device (22), and an anti-deformation component (23). The height adjustment support (21) is mounted on a fixed base (1), the fastening device (22) is mounted on the height adjustment support (21), and the anti-deformation component (23) is mounted on the fastening device (22). The fastening device (22) includes a fixed shell (24), a fastening screw (25), a drive block (26), a linkage gear plate (27), a follower block (28), a fastening plate (29), and a fastening motor (30). The fixed shell (24) is mounted on the height adjustment support (21), and a drive groove (31) is provided in the fixed shell (24). The fastening screw (25) passes through the fixed shell (24) and rotates in the drive groove (31). The drive block (26) is engaged and slidably mounted in the drive groove (31). The drive block (26) is sleeved on the fastening device (22). On the fastening screw (25), the driving block (26) is threadedly connected to the fastening screw (25). The linkage gear disc (27) is rotatably disposed in the fixed shell (24). The linkage gear disc (27) is meshed with the driving block (26). The driving groove (31) is provided with three sets. The follower block (28) is engaged and slidably disposed in the driving groove (31). The follower block (28) is meshed with the linkage gear disc (27). The fixed shell (24) is provided with There is a fastening groove (32), and the fastening plate (29) is engaged and slidably disposed in the fastening groove (32). The driving block (26) and the follower block (28) are provided with driving teeth (33), and the fastening plate (29) is provided with meshing teeth (34). The meshing teeth (34) are meshed and connected with the driving teeth (33). The fastening motor (30) is disposed on the fixed shell (24), and the output end of the fastening motor (30) is connected to the fastening screw (25).

6. The turbocharger rotor shaft welding device according to claim 5, characterized in that: The anti-deformation component (23) includes a lifting electric push rod (35), a fixed frame (36), and an anti-deformation contact wheel (37). The lifting electric push rod (35) is mounted on a fastening plate (29), the fixed frame (36) is mounted on the movable end of the lifting electric push rod (35), and the anti-deformation contact wheel (37) is rotatably mounted on the fixed frame (36).

7. The turbocharger rotor shaft welding device according to claim 6, characterized in that: The height adjustment support (21) includes a height adjustment electric actuator (38) and a fixing plate (39). The height adjustment electric actuator (38) is mounted on the fixing base (1), the fixing plate (39) is mounted on the movable end of the height adjustment electric actuator (38), and the fixing shell (24) is mounted on the fixing plate (39).

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