Offshore wind power stator support welding device and method based on stress relief
By designing a welding device for offshore wind turbine stator supports, and utilizing a combination of columns, anti-detachment plates, extrusion plates, and hydraulic systems, the problem of stress fluctuations caused by residual vibration was solved, achieving efficient stress elimination and improved structural stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-03-27
Smart Images
Figure CN121733138A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of welding devices, in particular to a marine wind power stator support welding device based on stress relief and a welding method. BACKGROUND
[0002] The marine wind power stator support is a core bearing and positioning component installed in the cabin of a marine wind turbine, which is mainly made of steel through welding, machining and other processes, and is used for fixing and supporting the generator stator core and winding. It needs to bear the weight of the stator itself, electromagnetic force during operation, sea wind load and vibration impact, and at the same time ensure the accurate coaxiality of the stator and the rotor, and has high strength, high rigidity and corrosion resistance. It is a key structural component for ensuring the stable operation of the generator, transmitting mechanical energy and electric energy, and directly affects the power generation efficiency and service life of the marine wind turbine. The marine wind power stator support needs to be formed by using a welding device during production. The stress relief device for welding is a special equipment suitable for the characteristics of large steel structures, which can eliminate welding residual stress through vibration, ultrasonic wave or heat treatment principle. It mainly includes three main types of vibration aging equipment, ultrasonic impact equipment and large annealing furnace. The vibration aging equipment is composed of a vibration source, a control unit and a support system. A specific frequency vibration is generated by the exciter to release the stress of the support in the resonance state. The intelligent control system can also optimize the parameters to adapt to large components and reduce energy consumption. These devices can be flexibly selected according to the welding conditions and stress distribution characteristics of the support to ensure the structural stability and fatigue resistance of the support after welding. The marine wind power stator support is a large welding bearing component, which has the characteristics of large volume and large overall quality. This makes its motion inertia very strong. During the process of welding residual stress relief by vibration method, the support will produce continuous vibration under the action of the exciter. When the exciter stops working and the active vibration stage ends, the support cannot stop moving immediately due to its strong inertia, and will drive the whole structure into a small amplitude vibration state of natural attenuation, that is, residual vibration. Although the amplitude of the subsequent residual vibration is much smaller than that of the active vibration stage, it will still act on each part of the support, especially the area where the residual stress has been partially released by vibration. Small and continuous vibration disturbance will occur under the influence of residual vibration. This disturbance will break the stress balance state formed in the area, resulting in secondary fluctuation of residual stress. Therefore, the marine wind power stator support welding device based on stress relief and the welding method are proposed to solve the above problems. SUMMARY
[0003] The purpose of the present application is to provide a marine wind power stator support welding device based on stress relief and a welding method to solve the problems raised in the background.
[0004] To achieve the above object, the present application provides the following technical scheme: The offshore wind power stator support welding device based on stress relief comprises an offshore wind power stator support, the offshore wind power stator support is placed on the upper end of a bearing assembly, the bottom end of the bearing assembly is fixedly connected with a transmission assembly, the transmission assembly is embeddedly installed in the inside of a driving assembly, a pressure connecting assembly is inserted into the inside of the bearing assembly, a sleeve connecting assembly is sleeved on the outside of the pressure connecting assembly, a vibration auxiliary assembly is arranged on the upper end of the pressure connecting assembly, the driving assembly comprises a base, the right side of the base is fixedly connected with an extension shell, the inside of the extension shell is fixedly connected with the cylinder body of a second electric hydraulic rod, the piston rod tail end of the second electric hydraulic rod is fixedly connected with a piston plate, the inside of the base is provided with a vertical groove and an expansion groove, the position close to the lower end of the vertical groove is fixedly connected with a ring plate, the inside of the ring plate is fixedly connected with a check valve, and the inside of the ring plate is provided with a flow limiting hole.
[0005] As a further optimization of the present application, wherein: the bearing assembly comprises a bearing table, the inside of the bearing table is provided with a machine groove, the inside of the machine groove is fixedly connected with a support frame, the inside of the support frame is fixedly connected with a first electric hydraulic rod, and the piston rod tail end of the first electric hydraulic rod is fixedly connected with a pressing plate.
[0006] As a further optimization of the present application, wherein: the top end of the bearing table is fixedly connected with a rubber ring pad through bolts, the offshore wind power stator support is placed on the upper end of the rubber ring pad, a plurality of first insertion holes are arranged on the inside of the bearing table, and the rubber ring pad is located in the inside of the plurality of first insertion holes.
[0007] As a further optimization of the present application, wherein: a column rod is inserted into the inside of the first insertion hole, a protection frame is fixedly connected to the top end of the column rod, the bottom end of the protection frame is attached to the top end of the bearing table, the protection frame is sleeved on the outside of the rubber ring pad, the column rod extends to the lower end of the first insertion hole, a clamping hole is arranged on the inside of the column rod, and the clamping hole is located at the lower end of the first insertion hole.
[0008] As a further optimization of the present application, wherein: the transmission assembly comprises a push column, the bottom end of the push column is fixedly connected with an embedded column, a rubber sealing ring is fixedly connected to the position close to the outside of the embedded column, the push column and the embedded column are slidingly connected to the inside of the vertical groove, the rubber sealing ring is attached to the inside of the vertical groove, and the top end of the push column is fixedly connected with the bottom end of the bearing table.
[0009] As a further optimization of the present application, wherein: a clamping groove is inserted into the inside of the clamping hole, the clamping groove is arranged on the inside of a first anti-dropping plate, the first anti-dropping plate is fixedly connected with a second anti-dropping plate through fixed bolts, and the first anti-dropping plate and the second anti-dropping plate are attached to the outside of the bearing table.
[0010] As a further optimization of the present invention, the protective frame has a second insertion hole on its inner side, a limiting post is inserted into the inner side of the second insertion hole, a pressure plate is fixedly connected to the top of the limiting post, and a hollow groove is formed on the inner side of the pressure plate.
[0011] As a further optimization of the present invention, the inner side of the extrusion plate is provided with a cross groove, the bottom end of the pressing plate is fixedly connected with a rubber pad, and the lower end of the pressing plate presses the upper end of the offshore wind turbine stator support through the rubber pad.
[0012] As a further optimization of the present invention, the vibration auxiliary component includes a frame, a disc base is fixedly connected to one side of the frame, a guide hole is provided on the inner side of the disc base, a guide post is slidably connected to the inner side of the guide hole, an impact plate is fixedly connected to the bottom end of the guide post, a spring is sleeved on the outer side of the guide post, the spring is fixedly connected to the top end of the impact plate, an opening is provided on the inner side of the impact plate, and the center of the impact plate is vertically aligned with the center of the pressure plate.
[0013] A welding method for offshore wind turbine stator support welding device based on stress relief; Step 1: During the welding of the offshore wind turbine stator support, rubber ring gaskets are placed on the upper end of the support platform. The offshore wind turbine stator support is hoisted onto the upper end of the rubber ring gaskets. The offshore wind turbine stator support is manually welded. The columns for fixing the protective frame are inserted into the first insertion hole opened on the support platform. The protective frame is placed on the upper end of the support platform, with the locking hole located outside the first insertion hole. The protective frame is fixed, with the locking groove aligned with the locking hole. The first anti-detachment plate is sleeved on the outside of multiple columns, with the locking groove inserted into the inside of the locking hole. The structure of the second anti-detachment plate is the same as that of the first anti-detachment plate. The first and second anti-detachment plates are fixed together with fixing bolts. The top of the first anti-detachment plate and the top of the second anti-detachment plate are both in contact with the lower end of the support platform. The first anti-detachment plate and the second anti-detachment plate limit the position of multiple columns. The limiting pins are inserted into the inside of the slots. The bottom end of the press plate is in contact with the top end of the offshore wind turbine stator support. The first electric hydraulic rod is activated to drive the press plate to move upward. The press plate moves inside the hollow slot. The cross groove opened by the extrusion plate is inserted into the outside of the press plate until the extrusion plate is in contact with the top end of the press plate. The extrusion plate is rotated, and the opening of the extrusion plate is staggered with the cross groove. The support frame is activated to drive the press plate to move downward. The press plate presses against the extrusion plate, and the extrusion plate presses against the press plate and the limiting pins. Step two: when the offshore wind power stator support is vibrated, the second electric hydraulic rod, the vertical groove and the inside of the extension shell are respectively communicated and filled with hydraulic oil, the second electric hydraulic rod is started to drive the piston plate to move, the piston plate is fixedly connected with the sealing ring outside, the piston plate pushes the hydraulic oil in the extension shell into the extension groove, the extension groove is distributed to the inside of the plurality of vertical grooves, the vertical groove is pushed and the rubber sealing ring is sealed to the built-in column and the base, the built-in column and the push column are moved upward, the plurality of push columns drive the bearing table, the offshore wind power stator support and the compression assembly to move upward, the top end of the compression plate collides with the impact plate, the impact plate collides with the compression plate, the compression plate vibrates and transmits to the offshore wind power stator support, the impact plate is impacted to drive the guide column to move upward, the guide column slides in the guide hole, and the impact plate extrudes the spring; Step three: when the vibration continues, the second electric hydraulic rod pushes the piston plate to move in the direction of the extension groove, the offshore wind power stator support and the compression assembly continue to move upward as a whole, the compression plate continues to extrude the impact plate, until the impact plate extrudes the spring to the limit, most of the hydraulic oil flows through the inside of the one-way valve, and the hydraulic oil in the vertical groove cannot flow back through the flow limiting hole under the extrusion of the impact plate to the compression plate.
[0014] Compared with the prior art, the beneficial effects of the present application are: 1、In the present application, the column, the first anti-drop plate and the extrusion plate are arranged, the fixing mode is convenient to operate, the artificial welding of the offshore wind power stator support is facilitated, the stability of the offshore wind power stator support after being fixed is ensured through the multiple limiting structures, damage to the surface of the offshore wind power stator support is avoided, a solid foundation is laid for subsequent vibration operation, the effectiveness of vibration transmission is guaranteed, and the smooth development of stress relief operation is facilitated; 2、In the present application, the second electric hydraulic rod, the impact plate and the spring are arranged, the vibration transmission uniformity of the device is high, the rubber pad wrapping design enables efficient vibration transmission to the offshore wind power stator support, significantly improves the stress relief effect, and effectively protects the driving mechanism through the double buffering action of the hydraulic oil and the spring, avoids damage of the driving mechanism due to impact, and takes into account the stress relief efficiency and equipment protection; 3、In the present application, the extension groove, the one-way valve and the flow limiting hole are arranged, the device can greatly inhibit the residual vibration of the offshore wind power stator support after stress relief, through the modes of accelerating energy conduction dissipation, limiting disordered shaking, increasing damping force consumption of buffer rebound, etc., the residual vibration duration is shortened, the residual stress is prevented from fluctuating again, the stress balance state initially formed is maintained, and the overall effect of stress relief is further improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a whole structure schematic diagram of the present application; Figure 2The schematic diagram of the explosion structure of the whole application; Figure 3 The schematic diagram of the exploded structure of the driving assembly of the application; Figure 4 The schematic diagram of the structure of the A place of the application Figure 3 ; Figure 5 The schematic diagram of the structure of the vibration auxiliary assembly of the application; Figure 6 The schematic diagram of the structure of the crimping assembly of the application; Figure 7 The schematic diagram of the structure of the sleeve assembly of the application; Figure 8 The schematic diagram of the structure of the first anti-off plate of the application; Figure 9 The schematic diagram of the structure of the protective frame of the application; Figure 10 The schematic diagram of the structure of the bearing assembly of the application.
[0016] In the figure: 1, offshore wind power stator support; 2, bearing assembly; 21, bearing table; 22, machine groove; 23, support frame; 24, first electric hydraulic rod; 25, pressing plate; 26, rubber ring pad; 27, first jack; 3, driving assembly; 31, base; 32, extension shell; 33, second electric hydraulic rod; 34, piston plate; 35, vertical groove; 36, expansion groove; 37, ring plate; 38, one-way valve; 39, flow limiting hole; 4, transmission assembly; 41, push column; 42, built-in column; 43, rubber sealing ring; 5, vibration auxiliary assembly; 51, stand; 52, disc seat; 53, guide hole; 54, guide column; 55, impact plate; 56, spring; 57, opening; 6, crimping assembly; 61, pressing plate; 62, limiting plug column; 63, hollow groove; 64, extrusion plate; 65, cross groove; 7, sleeve assembly; 71, protective frame; 72, column rod; 73, clamping hole; 74, second jack; 75, clamping groove; 76, first anti-off plate; 77, fixing bolt; 78, second anti-off plate. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.
[0018] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components, and / or combinations thereof.
[0019] Referring to Figures 1-10 The present application provides a technical solution: The offshore wind power stator support welding device and welding method based on stress relief include an offshore wind power stator support 1, the offshore wind power stator support 1 is placed on the upper end of a bearing assembly 2, the bottom end of the bearing assembly 2 is fixedly connected with a transmission assembly 4, the transmission assembly 4 is embeddedly installed in the inside of a driving assembly 3, a pressure connecting assembly 6 is inserted into the inside of the bearing assembly 2, a sleeve connecting assembly 7 is sleeved on the outside of the pressure connecting assembly 6, a vibration auxiliary assembly 5 is arranged on the upper end of the pressure connecting assembly 6, the driving assembly 3 includes a base 31, the right side of the base 31 is fixedly connected with an extension shell 32, the inner side of the extension shell 32 is fixedly connected with the cylinder body of a second electric hydraulic rod 33, the piston rod tail end of the second electric hydraulic rod 33 is fixedly connected with a piston plate 34, the inner side of the base 31 is provided with a vertical groove 35 and an expansion groove 36, the position close to the lower end of the vertical groove 35 is fixedly connected with a ring plate 37, the inner side of the ring plate 37 is fixedly connected with a one-way valve 38, and the inner side of the ring plate 37 is provided with a flow limiting hole 39.
[0020] As a further implementation of the present solution, the bearing assembly 2 includes a bearing table 21, the inner side of the bearing table 21 is provided with a machine groove 22, the inner side of the machine groove 22 is fixedly connected with a support frame 23, the inner side of the support frame 23 is fixedly connected with a first electric hydraulic rod 24, and the piston rod tail end of the first electric hydraulic rod 24 is fixedly connected with a pressing plate 25. Through the above arrangement, the cooperative matching of the bearing table 21, the first electric hydraulic rod 24 and the pressing plate 25 provides a stable driving force for the fixation of the offshore wind power stator support 1, can accurately control the extrusion degree, guarantees the fixation effect, avoids excessive stress damage to the offshore wind power stator support 1, at the same time provides a reliable structural support for subsequent vibration transmission, and helps efficient development of stress relief operation; As a further implementation of the present solution, the top end of the bearing table 21 is fixedly connected with a rubber ring pad 26 through bolts, the offshore wind power stator support 1 is placed on the upper end of the rubber ring pad 26, and the inner side of the bearing table 21 is provided with a plurality of first insertion holes 27. The rubber ring pad 26 is located in the inner periphery of the plurality of first insertion holes 27. Through the above arrangement, the rubber ring pad 26 provides a stable placement basis for the offshore wind power stator support 1, improves the convenience of welding operation, the layout of the plurality of first insertion holes 27 provides accurate installation positioning for the column 72, guarantees the symmetry and stability of the fixed structure, and indirectly enhances the uniformity of vibration transmission. As a further implementation of the present scheme, a column 72 is inserted into the first insertion hole 27, and a protective frame 71 is fixedly connected to the top end of the column 72. The bottom end of the protective frame 71 is attached to the top end of the bearing table 21, and the protective frame 71 is sleeved on the outside of the rubber ring pad 26. The column 72 extends to the lower end of the first insertion hole 27, and a clamping hole 73 is formed in the inside of the column 72. The clamping hole 73 is located at the lower end of the first insertion hole 27. Through the above arrangement, the insertion cooperation of the protective frame 71 and the column 72 achieves the peripheral limiting of the offshore wind power stator support 1. The clamping hole 73 provides an adaptive interface for subsequent component assembly, and the overall structure improves the anti-shaking ability of the offshore wind power stator support 1 after being fixed, thereby ensuring the structural stability during vibration operation. As a further implementation of the present scheme, the transmission assembly 4 includes a push column 41, and an inner column 42 is fixedly connected to the bottom end of the push column 41. A rubber sealing ring 43 is fixedly connected to the position close to the outside of the inner column 42. The push column 41 and the inner column 42 are slidingly connected to the inside of the vertical groove 35. The rubber sealing ring 43 is attached to the inside of the vertical groove 35. The top end of the push column 41 is fixedly connected to the bottom end of the bearing table 21. Through the above arrangement, the sealing and sliding structure of the push column 41, the inner column 42, and the rubber sealing ring 43 ensures the stability of hydraulic oil driving, accurately transmits driving force to drive the bearing table 21 and the offshore wind power stator support 1 to move, and improves the sealing performance of the hydraulic system to avoid oil leakage affecting the buffering and vibration effect. As a further implementation of the present scheme, a clamping groove 75 is inserted into the inside of the clamping hole 73. The clamping groove 75 is formed in the inside of a first anti-dropping plate 76. The first anti-dropping plate 76 is fixedly connected to a second anti-dropping plate 78 through fixed bolts 77. The first anti-dropping plate 76 and the second anti-dropping plate 78 are attached to the outside of the bearing table 21. Through the above arrangement, the insertion cooperation of the clamping groove 75 and the clamping hole 73 achieves multiple limiting. The fixed structure of the first anti-dropping plate 76 and the second anti-dropping plate 78 further locks the position of the column 72 to prevent it from sliding and deviating, thereby significantly improving the firmness of the offshore wind power stator support 1 and ensuring the effectiveness of vibration transmission. As a further implementation of the present scheme, a second insertion hole 74 is formed in the inside of the protective frame 71. A limiting insertion column 62 is inserted into the inside of the second insertion hole 74. A pressing plate 61 is fixedly connected to the top end of the limiting insertion column 62. A hollow groove 63 is formed in the inside of the pressing plate 61. Through the above arrangement, the second insertion hole 74 provides a precise assembly channel for the limiting insertion column 62. The cooperation of the pressing plate 61 and the limiting insertion column 62 achieves the top pressing and fixing of the offshore wind power stator support 1. The hollow groove 63 provides space for the movement of the pressing plate 25, thereby ensuring the smoothness of the fixing operation and avoiding hard damage to the surface of the offshore wind power stator support 1. As a further implementation of the scheme, a cross slot 65 is formed in the inner side of the extrusion plate 64, and a rubber pad is fixedly connected to the bottom end of the pressing plate 61. The lower end of the pressing plate 61 is pressed against the upper end of the offshore wind power stator support 1 through the rubber pad. Through the above arrangement, the rubber pad can buffer the pressing force and avoid damaging the surface of the offshore wind power stator support 1. The cooperation of the extrusion plate 64 and the cross slot 65 can enhance the locking effect of the fixing structure and improve the stability of the offshore wind power stator support 1 after being fixed. At the same time, the rubber pad can optimize the uniformity of vibration transmission and help improve the stress relief effect. As a further implementation of the scheme, the vibration auxiliary assembly 5 includes a stand 51, one side of the stand 51 is fixedly connected with a disc seat 52, a guide hole 53 is formed in the inner side of the disc seat 52, a guide column 54 is slidably connected to the inner side of the guide hole 53, a striking plate 55 is fixedly connected to the bottom end of the guide column 54, a spring 56 is sleeved on the outer side of the guide column 54, the spring 56 is fixedly connected to the top end of the striking plate 55, an opening 57 is formed in the inner side of the striking plate 55, and the center of the striking plate 55 is aligned with the center of the pressing plate 61. Through the above arrangement, the precise alignment of the striking plate 55 and the pressing plate 61 ensures the accuracy of vibration transmission, the buffer structure of the guide column 54 and the spring 56 can absorb impact energy, protect the driving mechanism from damage, and improve the stability of vibration transmission, further optimizing the stress relief effect.
[0021] Workflow: When welding the offshore wind turbine stator support 1, place the rubber ring gasket 26 on the upper end of the support platform 21, and hoist the offshore wind turbine stator support 1 onto the upper end of the rubber ring gasket 26. Initially, the crimping assembly 6 and the sleeve assembly 7 are not installed, which improves the convenience of operation when manually welding the offshore wind turbine stator support 1. After welding, the offshore wind turbine stator support 1 needs to be fixed. During fixing, insert the column 72 of the protective frame 71 into the first insertion hole 27 opened in the support platform 21, while ensuring the orientation of the locking hole 73. At this time, the protective frame 71 is placed on the support platform. At the upper end of 21, the locking hole 73 is located outside the first insertion hole 27. The protective frame 71 is then fixed, and the locking groove 75 is aligned with the locking hole 73. The first anti-detachment plate 76 is then fitted onto the outside of the multiple columns 72, so that the locking groove 75 is inserted into the locking hole 73. The second anti-detachment plate 78 is installed on the other columns 72 in the same manner as described above. The structure of the second anti-detachment plate 78 is the same as that of the first anti-detachment plate 76. The first anti-detachment plate 76 and the second anti-detachment plate 78 are fixed with fixing bolts 77. At this point, the top ends of the first anti-detachment plate 76 and the second anti-detachment plate 78 are both in contact with the lower end of the support platform 21. By limiting the multiple columns 72 through the first anti-detachment plate 76 and the second anti-detachment plate 78, the columns 72 can be prevented from sliding inside the first insertion hole 27, thereby achieving the effect of positioning the protective frame 71. The limiting insertion post 62 is inserted into the inside of the slot 75 until the bottom end of the pressing plate 61 is in contact with the top end of the offshore wind turbine stator support 1. At this time, the first electric hydraulic rod 24 is activated to drive the pressure plate 25 to move upward. The pressure plate 25 moves inside the hollow groove 63. The cross groove 65 opened by the extrusion plate 64 is inserted into the outside of the pressure plate 25 until the extrusion plate 64 is in contact with the top end of the pressing plate 61. Then the extrusion plate 64 is rotated. 4. The opening 57 of the extrusion plate 64 is staggered with the cross groove 65. When the support frame 23 is activated, the pressure plate 25 is moved downward. The pressure plate 25 presses the extrusion plate 64, thereby pressing the pressing plate 61 and the limiting column 62, achieving the effect of fixing the offshore wind turbine stator support 1. This method of fixing the offshore wind turbine stator support 1 can not only ensure stability, but also prevent damage to the surface of the offshore wind turbine stator support 1, providing a strong foundation for the vibration of the offshore wind turbine stator support 1 in the later stage, and thus ensuring the effectiveness of vibration transmission of the offshore wind turbine stator support 1. When the offshore wind power stator support 1 is vibrated, the second electric hydraulic rod 33, the vertical groove 35 and the inside of the extension shell 32 are respectively communicated and filled with hydraulic oil, the second electric hydraulic rod 33 is started to drive the piston plate 34 to move, the piston plate 34 is fixedly connected with a sealing ring on the outside, the hydraulic oil in the inside of the extension shell 32 is pushed into the inside of the expansion groove 36 by the piston plate 34, and then is distributed to the inside of the plurality of vertical grooves 35 through the expansion groove 36, the inside of the vertical groove 35 is pushed by the hydraulic oil and the rubber sealing ring 43 seals the built-in column 42 and the base 31, so that the built-in column 42 and the push column 41 move upward, the plurality of push columns 41 drive the bearing table 21, the offshore wind power stator support 1 and the crimping assembly 6 to move upward, at this time, the top of the pressing plate 61 collides with the impact plate 55, after the impact plate 55 collides with the pressing plate 61, the pressing plate 61 vibrates and transmits to the offshore wind power stator support 1, the rubber pad of the fixed pipe of the pressing plate 61 can improve the uniformity of the vibration transmission to the offshore wind power stator support 1, and then the effect of eliminating stress of the offshore wind power stator support 1 through vibration is improved, at the same time, after the impact plate 55 is impacted, the impact plate 55 drives the guide column 54 to move upward, the guide column 54 slides in the guide hole 53, the impact plate 55 extrudes the spring 56, and the spring 56 and the hydraulic oil can play a protective effect on the driving mechanism; When the vibration is prevented from continuing, the second electric hydraulic rod 33 continues to push the piston plate 34 to move in the direction of the expansion groove 36 according to the above principle, so that the offshore wind power stator support 1 and the crimping assembly 6 continue to move upward as a whole, the pressing plate 61 continues to extrude the impact plate 55, and the impact plate 55 extrudes the spring 56 to the limit, so that the impact plate 55 cannot be buffered, and when the hydraulic oil in the expansion groove 36 flows, most of the hydraulic oil flows through the inside of the one-way valve 38, the extrusion of the impact plate 55 to the pressing plate 61 improves the stability of the support of the offshore wind power stator support 1, thereby accelerating energy conduction dissipation, limiting structure disorder shaking, shortening the duration of residual vibration, and cooperating with the hydraulic oil in the vertical groove 35 which cannot flow back through the flow limiting hole 39, so that the damping force of the offshore wind power stator support 1 is increased, the residual vibration energy is consumed by the damping force, the vibration is quickly attenuated, the continuous propagation of small amplitude vibration is inhibited, thereby the generation of residual vibration after stress elimination of the offshore wind power stator support 1 is significantly improved, and then the stress balance state initially formed is ensured, the secondary fluctuation of residual stress is prevented, and the effect of stress elimination of the offshore wind power stator support 1 is improved.
[0022] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A stress-relief-based offshore wind turbine stator support welding device, comprising an offshore wind turbine stator support (1), characterized in that: The offshore wind turbine stator support (1) is placed on the upper end of the bearing component (2). The bottom end of the bearing component (2) is fixedly connected to the transmission component (4). The transmission component (4) is embedded in the drive component (3). The bearing component (2) is inserted into the crimping component (6). The crimping component (6) is sleeved on the outside of the crimping component (6). The upper end of the crimping component (6) is provided with a vibration auxiliary component (5). The drive assembly (3) includes a base (31), an extension shell (32) is fixedly connected to the right side of the base (31), the inner side of the extension shell (32) is fixedly connected to the cylinder of the second electro-hydraulic rod (33), a piston plate (34) is fixedly connected to the end of the piston rod of the second electro-hydraulic rod (33), a vertical groove (35) and an expansion groove (36) are provided on the inner side of the base (31), an annular plate (37) is fixedly connected near the lower end of the vertical groove (35), a one-way valve (38) is fixedly connected to the inner side of the annular plate (37), and a flow-limiting hole (39) is provided on the inner side of the annular plate (37).
2. The offshore wind turbine stator support welding device based on stress relief according to claim 1, characterized in that: The bearing assembly (2) includes a bearing platform (21), an organic groove (22) is opened on the inner side of the bearing platform (21), a support frame (23) is fixedly connected to the inner side of the organic groove (22), a first electric hydraulic rod (24) is fixedly connected to the inner side of the support frame (23), and a pressure plate (25) is fixedly connected to the piston rod end of the first electric hydraulic rod (24).
3. The offshore wind turbine stator support welding device based on stress relief according to claim 2, characterized in that: The top of the support platform (21) is fixedly connected to a rubber ring pad (26) by bolts. The upper end of the rubber ring pad (26) is placed on the offshore wind turbine stator support (1). Multiple first insertion holes (27) are opened on the inner side of the support platform (21). The rubber ring pad (26) is located in the inner perimeter of the multiple first insertion holes (27).
4. The offshore wind turbine stator support welding device based on stress relief according to claim 3, characterized in that: A column rod (72) is inserted into the inner side of the first insertion hole (27). A protective frame (71) is fixedly connected to the top of the column rod (72). The bottom end of the protective frame (71) is attached to the top of the support platform (21). The protective frame (71) is sleeved on the outside of the rubber ring pad (26). The column rod (72) extends to the lower end of the first insertion hole (27). A locking hole (73) is opened on the inner side of the column rod (72). The locking hole (73) is located at the lower end of the first insertion hole (27).
5. The offshore wind turbine stator support welding device based on stress relief according to claim 1, characterized in that: The transmission assembly (4) includes a push column (41), with an inner column (42) fixedly connected to the bottom end of the push column (41). A rubber sealing ring (43) is fixedly connected to the inner side of the inner column (42) near the outer side. The push column (41) and the inner column (42) are slidably connected to the inner side of the vertical groove (35). The outer side of the rubber sealing ring (43) is in contact with the inner side of the vertical groove (35). The top end of the push column (41) is fixedly connected to the bottom end of the support platform (21).
6. The offshore wind turbine stator support welding device based on stress relief according to claim 4, characterized in that: A slot (75) is inserted into the inner side of the card hole (73). The slot (75) is opened on the inner side of the first anti-detachment plate (76). The first anti-detachment plate (76) is fixedly connected to the second anti-detachment plate (78) by fixing bolts (77). The first anti-detachment plate (76) and the second anti-detachment plate (78) are both attached to the outer side of the support platform (21).
7. The offshore wind turbine stator support welding device based on stress relief according to claim 6, characterized in that: The protective frame (71) has a second insertion hole (74) on its inner side. A limiting plug (62) is inserted into the inner side of the second insertion hole (74). A pressure plate (61) is fixedly connected to the top of the limiting plug (62). A hollow groove (63) is opened on the inner side of the pressure plate (61).
8. The offshore wind turbine stator support welding device based on stress relief according to claim 7, characterized in that: The inner side of the extrusion plate (64) is provided with a cross groove (65), and the bottom end of the press plate (61) is fixedly connected with a rubber pad. The lower end of the press plate (61) presses the upper end of the offshore wind turbine stator support (1) through the rubber pad.
9. The offshore wind turbine stator support welding device based on stress relief according to claim 1, characterized in that: The vibration auxiliary component (5) includes a stand (51), a plate base (52) is fixedly connected to one side of the stand (51), a guide hole (53) is opened on the inner side of the plate base (52), a guide post (54) is slidably connected to the inner side of the guide hole (53), an impact plate (55) is fixedly connected to the bottom end of the guide post (54), a spring (56) is sleeved on the outer side of the guide post (54), the spring (56) is fixedly connected to the top end of the impact plate (55), an opening (57) is opened on the inner side of the impact plate (55), and the center of the impact plate (55) is aligned vertically with the center of the pressure plate (61).
10. A welding method based on the stress-relief-based offshore wind turbine stator support welding device according to any one of claims 1-9, characterized in that: Step 1: When welding the offshore wind turbine stator support (1), the rubber ring gasket (26) is placed on the upper end of the support platform (21), the offshore wind turbine stator support (1) is hoisted to the upper end of the rubber ring gasket (26), the offshore wind turbine stator support (1) is manually welded, the column rod (72) fixed by the protective frame (71) is inserted into the first insertion hole (27) opened in the support platform (21), the protective frame (71) is placed on the upper end of the support platform (21), and the locking hole (73) is closed. Located outside the first insertion hole (27), the protective frame (71) is fixed, the slot (75) is aligned with the hole (73), the first anti-detachment plate (76) is sleeved on the outside of multiple columns (72), the slot (75) is inserted into the inside of the hole (73), the structure of the second anti-detachment plate (78) is the same as that of the first anti-detachment plate (76), and the first anti-detachment plate (76) and the second anti-detachment plate (78) are fixed by fixing bolts (77), the first anti-detachment plate (76) The top of the first anti-detachment plate (76) and the top of the second anti-detachment plate (78) are both attached to the lower end of the support platform (21). The first anti-detachment plate (76) and the second anti-detachment plate (78) limit the multiple columns (72). The limiting insert (62) is inserted into the inside of the slot (75). The bottom end of the pressing plate (61) is attached to the top of the offshore wind turbine stator support (1). The first electric hydraulic rod (24) is activated to drive the pressure plate (25) to move upward. The pressure plate (25) moves in the hollow groove (63). Inside the pressure plate (25), the cross groove (65) of the extrusion plate (64) is inserted into the outside of the pressure plate (25) until the extrusion plate (64) is in contact with the top of the pressure plate (61). The extrusion plate (64) is rotated, and the opening of the extrusion plate (64) is intersected with the cross groove (65). The support frame (23) is activated to drive the pressure plate (25) to move downward. The pressure plate (25) presses against the extrusion plate (64), and the extrusion plate (64) presses against the pressure plate (61) and the limiting insert (62). Step 2: When vibrating the offshore wind turbine stator support (1), the second electric hydraulic rod (33), the vertical groove (35), and the inner side of the extension shell (32) are connected and filled with hydraulic oil. The second electric hydraulic rod (33) is started to drive the piston plate (34) to move. A sealing ring is fixedly connected to the outside of the piston plate (34). The piston plate (34) pushes the hydraulic oil inside the extension shell (32) into the expansion groove (36). The expansion groove (36) is distributed into the interior of multiple vertical grooves (35). The pushing of the hydraulic oil inside the vertical groove (35) and the rubber sealing ring (43) on the built-in column (42) and the base (3) 1) The sealing, the built-in column (42) and push column (41) move upward, and multiple push columns (41) drive the bearing platform (21), offshore wind turbine stator support (1) and pressing assembly (6) to move upward. The top of the pressing plate (61) collides with the impact plate (55). After the impact plate (55) impacts the pressing plate (61), the pressing plate (61) vibrates and transmits it to the offshore wind turbine stator support (1). The impact plate (55) is driven by the impact to move the guide column (54) upward. The guide column (54) slides inside the guide hole (53). The impact plate (55) squeezes the spring (56). Step 3: To prevent the vibration from continuing, the second electric hydraulic rod (33) pushes the piston plate (34) to move towards the expansion groove (36). The offshore wind turbine stator support (1) and the pressing assembly (6) move upward as a whole. The pressing plate (61) continues to press the impact plate (55) until the impact plate (55) presses the spring (56) to its limit. Most of the hydraulic oil flows through the one-way valve (38). Under the pressing action of the impact plate (55) on the pressing plate (61), the hydraulic oil inside the vertical groove (35) cannot quickly flow back through the flow restriction hole (39).