Wind turbine blade transport bogie automated welding tooling
The design of automated welding fixtures has solved the problems of cumbersome operation and welding quality caused by traditional manual fixing, and has achieved efficient and stable welding of wind turbine blade transport base frames, thereby improving welding quality and equipment service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIUQUAN AEROSPACE MASCH ENERGY CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional wind turbine blade transport frame welding relies on manual fixing, which is cumbersome and inefficient. Furthermore, during welding, the thermal expansion of the workpiece can easily lead to internal stress concentration due to the constraint of the clamps, resulting in deformation and cracks, which affects the welding quality.
The automated welding fixture includes a support base, a positioning structure, an elastic chuck, and an angle-adaptive component. The fixed plate is driven by a cylinder to press the workpiece, the elastic chuck releases thermal expansion stress, and the angle-adaptive component adapts to irregular shapes, achieving dynamic adjustment and uniform pressing.
It improves the convenience of welding operations, reduces the risk of workpiece deformation and equipment damage, ensures welding quality and precision, and enhances the reliability and stability of the fixture.
Smart Images
Figure CN224543592U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding fixtures for wind power equipment, specifically automated welding fixtures for wind turbine blade transport base frames. Background Technology
[0002] As a key component for capturing wind energy, the quality and stability of the transport frame for wind turbine blades directly affect the safety of the blades during transportation, as well as their subsequent installation and use. The transport frame needs to have sufficient strength and rigidity to withstand the weight of the blades and various external forces during transportation. Welding is a critical process in manufacturing the transport frame for wind turbine blades, and the quality of the welding directly affects the structural performance and service life of the frame.
[0003] In the traditional welding of wind turbine blade transport base frames, manual fixation of the workpiece is usually required. Operators need to use various tools and clamps to fix the workpiece on the welding fixture. This method is not only cumbersome and inefficient, but also, since the fixing clamps are usually rigid, when the workpiece is welded, the local thermal expansion of the workpiece will cause the traditional mechanical fixing clamps to apply excessive constraint force to the workpiece, resulting in stress concentration inside the workpiece, which is prone to deformation and cracks, thus affecting the welding quality.
[0004] Therefore, this application provides an automated welding fixture for the wind turbine blade transport base to solve the above problems. Utility Model Content
[0005] This application provides an automated welding fixture for wind turbine blade transport base, which aims to solve the problems mentioned in the background art, such as the reliance on manual operation and rigid clamps to fix the workpiece during welding, which is cumbersome, inefficient, and prone to internal stress concentration due to the constraint of the clamps during welding, resulting in deformation cracks that affect the welding quality.
[0006] To achieve the above objectives, this application provides the following technical solution: an automated welding fixture for transporting wind turbine blades, including a support base and a positioning structure disposed on the support base for fixing the workpiece. The positioning structure includes multiple bases disposed on the support base and evenly distributed therein, a fixing plate disposed on one side of the base for pressing the workpiece, and a cylinder disposed on the base for driving the fixing plate to rise and fall. The automated welding fixture also includes an elastic chuck disposed on the side of the fixed plate near the workpiece for dynamically adjusting the clamping force on the workpiece, and an angle adaptive component disposed on the elastic chuck for multi-angle contact with the workpiece surface. Through a positioning structure composed of multiple bases, multiple fixed plates, and multiple cylinders, when the workpiece needs to be fixed, the cylinders push the fixed plate downwards, causing the fixed plate to clamp the workpiece, thus firmly fixing the workpiece to the carrier seat without manual fixation, improving operational convenience. Simultaneously, the design of the elastic chuck allows for small, controllable displacement in the corresponding area when localized welding thermal expansion occurs, thereby releasing some stress, reducing deformation, and improving welding quality. Furthermore, the angle adaptive component design enables the elastic chuck to achieve multi-angle contact with the workpiece surface to adapt to various irregular shapes on the workpiece surface of the transport base, providing uniform pressure and reliable clamping, reducing the risk of workpiece deformation and equipment damage, and further ensuring welding quality.
[0007] Preferably, to facilitate the installation and use of the base, the base is provided with bolts, which are fixedly connected to the bearing seat. By rotating the bolts, they engage with the threaded holes on the bearing seat, generating friction and mechanical engagement force to achieve a tight connection. This connection method is detachable, making it convenient to install, disassemble, and replace the base when needed, greatly improving the convenience and flexibility of base installation.
[0008] Preferably, in order to achieve dynamic adjustment of the workpiece clamping force, the elastic chuck includes multiple buffer grooves evenly distributed on the side of the fixed plate near the workpiece, a buffer rod passing through the buffer groove and slidably connected within the buffer groove, and a spring disposed within the buffer groove. The two ends of the spring are fixedly connected to the inside of the buffer groove and the buffer rod, respectively. When the workpiece expands due to heat, it will generate an outward pushing force on the buffer rod. The buffer rod slides within the buffer groove to compress the spring, thereby allowing the workpiece to produce small, controllable displacements, reducing workpiece deformation caused by welding thermal expansion, and improving welding quality.
[0009] Preferably, in order to prevent the buffer rod from detaching from the buffer groove and to prevent impurities from entering the buffer groove, the elastic clamp further includes a telescopic component disposed on the outside of the buffer rod and connected to the fixing plate for limiting the buffer rod and protecting the buffer groove; by providing the telescopic component, the buffer rod can be prevented from detaching from the buffer groove, ensuring the use of the elastic clamp structure, and at the same time, it can also prevent impurities from entering the buffer groove, avoiding problems such as poor sliding of the buffer rod and decreased spring performance caused by impurities.
[0010] Preferably, to achieve telescopic and protective functions, the telescopic component includes a metal bellows disposed outside the buffer groove and sleeved on the buffer rod. Both ends of the metal bellows are fixedly connected to the fixed plate and the end of the buffer rod furthest from the spring, respectively. This design allows the metal bellows to extend and retract as the buffer rod slides within the buffer groove, maintaining a limiting effect on the buffer rod and preventing it from detaching from the buffer groove. Simultaneously, the sealing performance of the metal bellows prevents external impurities such as dust and welding slag from entering the buffer groove, avoiding interference with the movement of the spring and the buffer rod.
[0011] Preferably, to achieve multi-angle contact with the workpiece surface, the angle adaptive component includes a spherical seat fixedly disposed at the end of the buffer rod away from the spring, a spherical groove formed on the side of the spherical seat away from the buffer rod, and a contact head rotatably connected in the spherical groove for contacting the workpiece surface. The side of the contact head closest to the workpiece is disposed outside the spherical groove, and the side of the contact head closest to the workpiece is spherical. This design allows the contact head to automatically adjust its angle when encountering slight tilting, local protrusions, or depressions on the workpiece surface, ensuring that the side closest to the workpiece is always in close contact with the workpiece surface. This results in a more uniform distribution of clamping force, avoiding the risk of workpiece deformation or contact head damage due to excessive clamping force caused by local point contact, improving the reliability and stability of clamping, and further ensuring welding quality.
[0012] Preferably, in order to reduce wear between the spherical groove and the contact head, a wear-resistant pad is fixedly provided between the spherical groove and the contact head; the wear-resistant pad is designed so that when the contact head rotates in the spherical groove, the wear-resistant pad is located between the two and bears most of the friction force, thereby effectively reducing the friction and wear when the contact head rotates, and extending the service life of the spherical groove and the contact head.
[0013] This automated welding fixture for transporting wind turbine blades uses a positioning structure composed of multiple bases, multiple fixing plates, and multiple cylinders. When it is necessary to fix the workpiece, the cylinders push the fixing plates downward to press the workpiece, thus firmly fixing the workpiece on the carrier. This eliminates the need for manual fixing of the workpiece and improves the convenience of operation. The automated welding fixture for transporting wind turbine blades uses a flexible clamp design to allow for small, controllable displacement in the corresponding area when local welding thermal expansion occurs, thereby releasing some stress, reducing deformation, and improving welding quality. The automated welding fixture for transporting wind turbine blades uses an angle-adaptive component design to enable the elastic clamp to fit against the workpiece surface at multiple angles. This adapts to various irregular shapes on the workpiece surface of the transport base, providing uniform pressure and reliable clamping, and reducing the risk of workpiece deformation and equipment damage. The automated welding fixture for transporting wind turbine blades uses a telescopic design to prevent the buffer rod from detaching from the buffer groove and to prevent external impurities such as dust and welding slag from entering the buffer groove, thus avoiding interference with the movement of the spring and buffer rod. Attached Figure Description
[0014] Figure 1 A schematic diagram of the automated welding fixture for transporting wind turbine blades. Figure 2 A schematic diagram of the positioning structure in the automated welding fixture for transporting wind turbine blades; Figure 3 A schematic diagram of the elastic clamp in the automated welding fixture for transporting wind turbine blades; Figure 4 This is a structural diagram of the angle adaptive component in the automated welding fixture for the wind turbine blade transport base.
[0015] In the picture: 1. Support base; 2. Positioning structure; 21. Base; 211. Bolt; 22. Fixing plate; 23. Cylinder; 3. Elastic clamp; 31. Buffer groove; 32. Buffer rod; 33. Spring; 34. Telescopic component; 341. Metal bellows; 4. Angle adaptive component; 41. Spherical seat; 42. Spherical groove; 43. Contact head. Detailed Implementation
[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0017] First Embodiment
[0018] This embodiment provides an automated welding fixture for transporting wind turbine blades, such as... Figures 1-4As shown, the automated welding fixture includes a support base 1 and a positioning structure 2 set on the support base 1 for fixing the workpiece. The positioning structure 2 includes multiple bases 21 set on the support base 1 and evenly distributed, a fixing plate 22 set on one side of the base 21 for pressing the workpiece, and a cylinder 23 set on the base 21 for driving the fixing plate 22 to rise and fall. The automated welding fixture also includes an elastic chuck 3 set on the side of the fixing plate 22 near the workpiece for dynamically adjusting the workpiece clamping force, and an angle adaptive component 4 set on the elastic chuck 3 for multi-angle contact with the workpiece surface.
[0019] In use, when it is necessary to fix the workpiece, multiple cylinders 23 are activated. The piston rods of the cylinders 23 begin to move linearly, driving the fixing plate 22, which is located on one side of the base 21, to move downwards. This causes the fixing plate 22 to gradually approach the workpiece. Since the elastic chuck 3 is located on the fixing plate 22, it moves closer to the workpiece synchronously as the fixing plate 22 moves. Furthermore, since the angle adaptive component 4 is located on the elastic chuck 3, it moves closer to the workpiece surface synchronously as the elastic chuck 3 moves closer to the workpiece, ultimately pressing it firmly onto the support seat 1 to achieve workpiece positioning and fixation. However, the angle adaptive component 4... When the workpiece is in contact and clamped, the angle adaptive component 4 can automatically adjust the angle according to the irregular shape of the workpiece surface, such as slight tilt, local protrusion or depression, so that the side close to the workpiece is always in close contact with the workpiece surface, providing more uniform contact pressure and more reliable clamping. Then, during the welding process, the elastic chuck 3 set on the side of the fixed plate 22 close to the workpiece plays a role. During the welding process, the workpiece will experience local thermal expansion. The elastic chuck 3 uses its elastic properties to allow the workpiece to produce a small, controllable displacement in this area, thereby releasing some of the stress caused by thermal expansion, realizing dynamic adjustment of the clamping force on the workpiece, and ensuring welding accuracy.
[0020] To facilitate the installation and use of the base 21, bolts 211 are provided on the base 21. The bolts 211 are fixedly connected to the bearing seat 1. By rotating the bolts 211, they engage with the threaded holes on the bearing seat 1, generating friction and mechanical engagement force to achieve a tight connection. This connection method is detachable, making it convenient to install, disassemble, and replace the base 21 when needed, greatly improving the convenience and flexibility of the base 21 installation.
[0021] Specifically, the elastic chuck 3 includes multiple buffer grooves 31 that are evenly distributed on the side of the fixed plate 22 near the workpiece, a buffer rod 32 that passes through the buffer groove 31 and is slidably connected in the buffer groove 31, and a spring 33 that is disposed in the buffer groove 31. The two ends of the spring 33 are fixedly connected to the inside of the buffer groove 31 and the buffer rod 32, respectively. When the welding operation causes localized thermal expansion of the workpiece due to heat, the buffer rods 32, evenly distributed in multiple buffer grooves 31 on the side of the fixed plate 22 near the workpiece, on the elastic chuck 3, begin to move. Since the buffer rods 32 pass through the buffer grooves 31 and are slidably connected to them, the thrust generated by the thermal expansion of the workpiece will push the buffer rods 32 to slide inward within the buffer grooves 31. As the buffer rods 32 slide, the springs 33 set in the buffer grooves 31 are compressed. At this time, the elastic force of the springs 33 does not completely prevent the expansion of the workpiece, but allows the workpiece to have a certain expansion displacement space, thereby releasing some of the stress generated by thermal expansion and preventing the workpiece from excessively deforming due to the inability to release stress. When the welding operation is completed and the workpiece begins to cool and shrink, the springs 33, due to their own elastic characteristics, will generate a restoring force. This force will push the buffer rods 32 to slide back, so that the elastic chuck 3 always maintains an appropriate clamping force on the workpiece, ensuring that the workpiece will not separate from the fixed plate 22 or become loose during the cooling process due to shrinkage, thereby ensuring the stability of the workpiece position throughout the welding process and improving the welding precision.
[0022] Furthermore, the angle adaptive component 4 includes a spherical seat 41 fixedly disposed at the end of the buffer rod 32 away from the spring 33, a spherical groove 42 formed on the side of the spherical seat 41 away from the buffer rod 32, and a contact head 43 rotatably connected in the spherical groove 42 for contacting the workpiece surface. The side of the contact head 43 near the workpiece is disposed on the outside of the spherical groove 42, and the side of the contact head 43 near the workpiece is spherical. When the cylinder 23 drives the fixed plate 22 to descend, causing the buffer rod 32 of the elastic chuck 3 to approach the workpiece, the spherical seat 41, which is fixedly installed at the end of the buffer rod 32 away from the spring 33, also approaches the workpiece. Since the contact head 43 is rotatably connected to the spherical groove 42 on the side of the spherical seat 41 away from the buffer rod 32, the contact head 43 can rotate freely within a certain range according to the principle of free rotation of the spherical joint. As the contact head 43 approaches the workpiece and gradually contacts the workpiece surface, regardless of the irregular shape of the workpiece surface, such as local tilting, protrusions, or depressions, the contact head 43 will automatically adjust. The angle of the contact head 43 is such that its spherical side, which is close to the workpiece, fits tightly against the workpiece surface. The side of the contact head 43 that is close to the workpiece is located on the outside of the spherical groove 42. This ensures that there is a sufficient contact area to interact with the workpiece surface. Through this automatic angle adjustment and tight fit, the angle adaptive component 4 increases the contact area with the workpiece, so that the clamping force of the elastic chuck 3 on the workpiece can be more evenly distributed on the workpiece surface. This avoids the risk of workpiece deformation or damage to the contact head 43 due to excessive clamping force caused by local point contact, effectively improving the reliability and stability of clamping and further ensuring the welding quality.
[0023] In addition, in order to reduce the wear between the spherical groove 42 and the contact head 43, a wear-resistant pad is fixedly provided between the spherical groove 42 and the contact head 43. The wear-resistant pad is designed so that when the contact head 43 rotates in the spherical groove 42, the wear-resistant pad is located between the two and bears most of the friction force, thereby effectively reducing the friction and wear when the contact head 43 rotates, and extending the service life of the spherical groove 42 and the contact head 43.
[0024] Second Embodiment
[0025] Unlike Example 1, as Figure 3 and Figure 4 As shown, in order to prevent the buffer rod 32 from dislodging from the buffer groove 31 and to prevent impurities from entering the buffer groove 31, the elastic clamp 3 also includes a telescopic member 34 disposed on the outside of the buffer rod 32 and connected to the fixing plate 22 for limiting the buffer rod 32 and for protecting the buffer groove 31; the telescopic member 34 includes a metal bellows 341 disposed on the outside of the buffer groove 31 and sleeved on the buffer rod 32, and the two ends of the metal bellows 341 are fixedly connected to the fixing plate 22 and the end of the buffer rod 32 away from the spring 33, respectively. When the workpiece expands due to heat, the buffer rod 32 will slide within the buffer groove 31 due to the thrust applied by the workpiece or return to slide outward from the buffer groove 31 due to the elastic force of the spring 33. Simultaneously, the metal bellows 341 in the telescopic member 34, which is located outside the buffer rod 32 and connected to the fixed plate 22, begins to work. Since the metal bellows 341 is sleeved on the buffer rod 32 and located outside the buffer groove 31, with its two ends fixedly connected to the fixed plate 22 and the end of the buffer rod 32 furthest from the spring 33, respectively, during the sliding process of the buffer rod 32, the metal bellows 341... The corrugated pipe 341, due to its own elasticity, will expand and contract accordingly as the buffer rod 32 moves. The corrugated pipe 341 always tightly wraps around the buffer rod 32. By physically restricting the buffer rod 32, it prevents the buffer rod 32 from slipping out of the buffer groove 31 due to excessive sliding range, thus playing a reliable limiting role. At the same time, the corrugated pipe 341 forms a relatively closed space, isolating the buffer groove 31 from the external environment, which can prevent impurities from entering the buffer groove 31 and interfering with the normal sliding of the buffer rod 32.
[0026] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.
Claims
1. An automated welding fixture for transporting wind turbine blades, comprising a support (1) and a positioning structure (2) disposed on the support (1) for fixing the workpiece, characterized in that: The positioning structure (2) includes multiple bases (21) evenly distributed on the bearing seat (1), a fixing plate (22) for pressing the workpiece on one side of the base (21), and a cylinder (23) for driving the fixing plate (22) to rise and fall on the base (21). The automated welding fixture also includes an elastic chuck (3) disposed on the side of the fixed plate (22) near the workpiece for dynamically adjusting the clamping force on the workpiece, and an angle adaptive component (4) disposed on the elastic chuck (3) for multi-angle contact with the workpiece surface.
2. The automated welding fixture for transporting wind turbine blades according to claim 1, characterized in that: The base (21) is provided with bolts (211), and the bolts (211) are fixedly connected to the bearing seat (1) by means of the bolts (211).
3. The automated welding fixture for transporting wind turbine blades according to claim 1, characterized in that: The elastic chuck (3) includes a plurality of buffer grooves (31) evenly distributed on the side of the fixed plate (22) near the workpiece, a buffer rod (32) passing through the buffer groove (31) and slidably connected in the buffer groove (31), and a spring (33) disposed in the buffer groove (31). The two ends of the spring (33) are fixedly connected to the inside of the buffer groove (31) and the buffer rod (32) respectively.
4. The automated welding fixture for transporting wind turbine blades according to claim 3, characterized in that: The elastic clamp (3) also includes a telescopic member (34) disposed outside the buffer rod (32) and connected to the fixing plate (22) for limiting the buffer rod (32) and for protecting the buffer groove (31).
5. The automated welding fixture for transporting wind turbine blades according to claim 4, characterized in that: The telescopic component (34) includes a metal bellows (341) disposed outside the buffer groove (31) and sleeved on the buffer rod (32). The two ends of the metal bellows (341) are fixedly connected to the fixed plate (22) and the end of the buffer rod (32) away from the spring (33), respectively.
6. The automated welding fixture for transporting wind turbine blades according to claim 5, characterized in that: The angle adaptive component (4) includes a spherical seat (41) fixedly disposed at the end of the buffer rod (32) away from the spring (33), a spherical groove (42) formed on the side of the spherical seat (41) away from the buffer rod (32), and a contact head (43) rotatably connected in the spherical groove (42) for contacting the surface of the workpiece. The side of the contact head (43) near the workpiece is disposed outside the spherical groove (42), and the side of the contact head (43) near the workpiece is spherical.
7. The automated welding fixture for transporting wind turbine blades according to claim 6, characterized in that: A wear-resistant pad is fixedly provided between the spherical groove (42) and the contact head (43).