Auxiliary machining system for large megawatt direct drive wind turbine rotor house

Abstract

The application relates to an auxiliary machining system for a large-megawatt direct-drive wind turbine rotor house, which comprises a cylinder auxiliary tool, a cone auxiliary tool and an assembly tool, the cylinder auxiliary tool comprises two posture stabilizing devices which can be spliced together, the posture stabilizing device is provided with a tensioning module, the tensioning module comprises at least three tensioners, each tensioner is respectively provided with an adsorption component, the cone auxiliary tool comprises two state maintaining devices which can be spliced together, the state maintaining device is provided with a constraint module, the constraint module comprises at least three constrainters, each constrainter is respectively provided with an adsorption component; the assembly tool comprises a seat body, a positioning table and a positioning column, the positioning column is detachably arranged on the seat body; the machining system is used for assisting in machining a large rotor house, can simultaneously solve the deformation problems in the rolling process and the transfer process of the rotor house, can further improve the manufacturing precision and performance of the rotor house, and can effectively simplify the machining process of the large rotor house.

Description

Technical Field

[0001] This invention relates to the field of direct-drive offshore wind turbine technology, and more specifically to an auxiliary processing system for the rotor house of a large-megawatt direct-drive wind turbine. Background Technology

[0002] Wind energy is one of the most technologically mature, scalable, and commercially viable power generation methods in the clean energy sector. Offshore wind power, in particular, has experienced rapid growth in recent years due to its stable wind source, high utilization rate, and large single-unit installed capacity. Direct-drive wind turbines, which eliminate the need for speed-increasing gearboxes, offer advantages such as high power generation efficiency, high reliability, low failure rate, and low maintenance costs, and are gradually becoming the global trend in offshore wind power development.

[0003] As a core component of large-megawatt direct-drive wind turbines, high-precision rotor houses are characterized by their extremely large structural dimensions, stringent quality requirements, and immense manufacturing complexity. Their core technologies involve high-precision large-cylinder rolling, welding deformation control, stress-relieving heat treatment, machining precision control, and anti-corrosion coating, creating extremely high barriers to entry in the industry. The manufacturing process for large-megawatt direct-drive offshore wind turbine rotor houses typically includes material preparation, rolling, and welding. For example, Chinese patent CN 113211020 B discloses a manufacturing process for rotor houses of 10MW and above. To improve the manufacturing precision of large rotor houses, existing technologies have generally optimized aspects such as rolling equipment and welding deformation control. Examples include a rolling device for processing the conical plates of large-megawatt rotor houses disclosed in Chinese patent CN 113319162 B, a welding fixture for large-megawatt rotor houses disclosed in Chinese patent CN 215747429 U, and Chinese patent CN 117817580. The welding and transport device disclosed in Part A for an integrated large-megawatt generator rotor house, etc., are beneficial for improving the machining accuracy of the rotor house. However, in practice, due to the large size of the rotor house, the required sheet metal is also very large. During the rolling process, the sheet metal is easily deformed by its own weight and external loads after passing through the exit of the rolling equipment. Simultaneously, during the transfer of the rolled sheet metal to the aforementioned equipment, deformation is also very likely due to factors such as clamping and hoisting. These deformations need to be corrected in subsequent processing, which not only makes the processing more complicated, but some deformations are also difficult to correct or may lead to greater residual stress in the corrected sheet metal, thus hindering the improvement of rotor house performance. Existing rotor house machining processes ignore the impact of these deformations on rotor house performance and accuracy, and existing auxiliary processing equipment has not solved the deformation problem during sheet metal rolling and transfer. This not only hinders further improvement of rotor house performance and manufacturing accuracy but also hinders the simplification of rotor house machining processes, urgently requiring a solution. Summary of the Invention

[0004] The first aspect of this invention addresses the aforementioned technical problems by providing an auxiliary processing system for rotor housings of large-megawatt direct-drive wind turbines. This system not only simultaneously solves the deformation problems during the rotor housing rolling and transfer processes, further improving the manufacturing precision and performance of the rotor housing, but also effectively simplifies the rotor housing processing technology, making the processing of large rotor housings simpler and more reliable. The main concept is as follows:

[0005] An auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine includes a cylindrical auxiliary fixture, a conical auxiliary fixture, and an assembly fixture. The cylindrical auxiliary fixture is designed to be compatible with a vertical plate rolling machine. It includes two attitude stabilizing devices that can be spliced ​​together, and a first base adapted to the two attitude stabilizing devices. Each attitude stabilizing device has at least one set of tensioning modules arranged along its height direction. Each tensioning module includes at least three tensioners that can rotate in a linked manner along the circumferential direction. Each tensioner is equipped with an adsorption component for adsorbing an arc-shaped plate. The conical auxiliary fixture is designed to be compatible with a vertical conical plate rolling machine. The roll forming machine includes a conical auxiliary fixture comprising two state holding devices that can be spliced ​​together, and a second base adapted to the two state holding devices. The state holding devices are configured with at least one set of constraint modules along the height direction. The constraint modules include at least three constraint devices that can rotate in linkage along the circumferential direction. Each constraint device is configured with an adsorption component for adsorbing the conical plate. The assembly fixture includes a base for bearing, a positioning platform adapted to both the cylindrical auxiliary fixture and the conical auxiliary fixture, and a positioning column adapted to both the cylindrical auxiliary fixture and the conical auxiliary fixture. The positioning column is detachably mounted on the base and coaxial with the positioning platform. In this solution, by configuring a cylindrical auxiliary fixture adapted to the vertical plate rolling machine, the auxiliary fixture works in conjunction with the vertical plate rolling machine to ensure that during the rolling of the cylindrical arc plate, the front end of the arc plate is simultaneously captured by the tensioning module in the auxiliary fixture as it leaves the vertical plate rolling machine. The adsorption components in the tensioning module restrict and constrain the arc plate, and the cooperation of the various tensioners in the tensioning module ensures the radius of the arc plate. This not only guarantees the roundness and size of the arc plate, but also effectively solves the problems of arc plate deformation and increased internal stress during the rolling process. By configuring a cone auxiliary fixture adapted to the vertical cone roll plate rolling machine, the cone auxiliary fixture can work in conjunction with the vertical cone roll plate rolling machine to ensure that during the rolling process of the cone-shaped plate, the front end of the cone plate is simultaneously captured by the constraint module in the cone auxiliary fixture as it leaves the vertical cone roll plate rolling machine. The adsorption components in the constraint module restrict and constrain the cone plate, and the cooperation of the various constrainers in the constraint module ensures the radius of the cone plate. This not only ensures the roundness and size of the cone plate, but also effectively prevents the cone plate from deforming and increasing internal stress during the rolling process.By configuring the auxiliary tooling for the cylinder as including two interlocking attitude stabilizing devices, two arc plates can be simultaneously and quickly and precisely joined together during the rotor housing processing. This not only facilitates welding but also effectively controls welding deformation due to the constraint of the arc plates by the attitude stabilizing devices, resulting in a cylinder with higher precision and performance. Similarly, by configuring the auxiliary tooling for the cone as including two interlocking state-holding devices, two conical plates can be simultaneously and quickly and precisely joined together during the rotor housing processing. This not only facilitates welding but also effectively controls welding deformation due to the constraint of the conical plates by the state-holding devices, resulting in a conical with higher precision and performance. After the sheet metal is rolled, it is constrained by the auxiliary tooling for the cylinder and the cone respectively. This allows for deformation-free transfer of the cylinder and cone during subsequent processing by moving the auxiliary tooling for the cylinder and the cone, effectively solving the problem of deformation during the transfer of large-sized cylinders and cones. By configuring a common assembly fixture and incorporating a positioning platform that adapts to both the cylindrical and conical auxiliary fixtures within it, the welding positioning and assembly of the flange, conical body, and cylindrical body can be completed through the coordinated assembly of the cylindrical and conical auxiliary fixtures with the assembly fixture. This not only simplifies the process and improves assembly accuracy but also effectively controls welding deformation, further enhancing the performance of the rotor housing. During assembly, the positioning platform can be used as a positioning reference to simultaneously position the flange, conical body, and cylindrical body, further simplifying the process and improving assembly accuracy. Compared to existing technologies, applying this processing system to the machining of large-megawatt direct-drive offshore wind turbine rotor housings allows for effective control of deformation and stress across the entire process. This not only further improves the manufacturing precision and performance of the rotor housing but also simplifies the machining process, making the machining of large rotor housings simpler and more reliable.

[0006] To address the issue of simplifying the rotor housing manufacturing process, the attitude stabilization device further includes a first main frame, with a tensioning module mounted on it. The tensioner in the tensioning module can rotate circumferentially along the first main frame. A first connector is located at the lower end of the first main frame. The state holding device also includes a second main frame, with a constraint module mounted on it. The constraint device's constraint device can rotate circumferentially along the second main frame. A second connector is located at the lower end of the second main frame. The first base is configured to fit the first connector, the second base is configured to fit the second connector, and the positioning platform is configured to fit both the first and second connectors. In this solution, a first connector is configured in the attitude stabilizing device, and the first base is constructed to be compatible with the first connector. This allows the attitude stabilizing device to be detachably installed on the first base through the cooperation of the first connector and the first base, enabling stable use with the vertical plate rolling machine. Similarly, a second connector is configured in the state holding device, and the second base is constructed to be compatible with the second connector. This allows the state holding device to be detachably installed on the second base through the cooperation of the second connector and the second base, enabling stable use with the vertical conical roll plate rolling machine. Furthermore, the positioning table is constructed to be compatible with both the first and second connectors, allowing the attitude stabilizing device and the state holding device to be detachably installed on the assembly fixture. This facilitates the assembly and welding positioning of the flange, cone, and cylinder on the assembly fixture, greatly simplifying the rotor housing processing flow.

[0007] Furthermore, the two first main frames in the cylindrical auxiliary fixture are configured to be detachably connected; and / or, the two second main frames in the conical auxiliary fixture are configured to be detachably connected. This allows for the splicing of two attitude stabilization devices through the splicing of the two first main frames, and the splicing of two state-maintaining devices through the splicing of the two second main frames, which is very convenient and efficient.

[0008] The second aspect of this invention addresses the problem of improving the manufacturing precision and performance of the rotor housing. Further, the positioning platform has a cylindrical external structure, with a first central through-hole and a second central through-hole at its center. The diameter of the first central through-hole is larger than the diameter of the second central through-hole. The outer diameter of the positioning column is adapted to the inner diameter of the second central through-hole. The first main frame adopts a semi-cylindrical structure, and its inner diameter is adapted to the outer diameter of the positioning column. When the two first main frames are joined together, their centers form a central circular channel, and the two first connectors form a circular groove. The central axis of the central circular channel intersects with the circular groove. The central axes of the two main frames are coaxial; the outer diameter of the positioning platform is adapted to the inner diameter of the circular slot, and the cylindrical auxiliary tooling is positioned through the cooperation of the circular slot and the positioning platform; the second main frame adopts a semi-cylindrical structure, and the inner diameter of the second main frame is adapted to the outer diameter of the positioning column; when the two second main frames are spliced ​​together, the centers of the two second main frames form a central circular channel, and the two second plugs form a cylindrical plug, with the central axis of the central circular channel coaxial with the central axis of the cylindrical plug; the outer diameter of the second plug is adapted to the inner diameter of the first central through hole, and the conical auxiliary tooling is positioned through the cooperation of the cylindrical plug and the first central through hole. This design not only allows the positioning platform to simultaneously adapt to both the cylindrical auxiliary tooling and the conical auxiliary tooling, so that the assembly and welding work of the rotor house can be completed on the assembly tooling, which can greatly simplify the process and improve efficiency, but also allows the positioning platform to serve as a positioning reference for assembly and welding work, so as to more accurately position the cylindrical auxiliary tooling and the conical auxiliary tooling, so that the two can achieve more precise cooperation during the assembly and welding process, thereby improving the manufacturing accuracy and performance of the rotor house. Furthermore, by cooperating with the positioning pins and the auxiliary tooling for the cylinder and cone, not only can the positioning effect be enhanced, but the coordination process between the auxiliary tooling for the cylinder and the auxiliary tooling for the cone can also be simplified, thereby greatly simplifying the machining process.

[0009] To further improve the manufacturing precision and performance of the rotor housing, the second connector has a locking hole on its side, and the positioning post has multiple positioning holes that mate with the locking hole. These positioning holes are arranged along the height of the positioning post. Fasteners that mate with the locking hole and positioning hole are used to install the conical auxiliary fixture at different heights on the positioning post. This allows the conical auxiliary fixture to be positioned above the cylindrical auxiliary fixture during assembly, enabling an inverted fit between the cylindrical and conical parts and facilitating adjustment of the weld between them, thus improving the welding quality. Furthermore, it allows the conical auxiliary fixture to form different dimensional fits with the lower cylindrical auxiliary fixture to meet the assembly and welding requirements of rotor housings of various sizes.

[0010] The third aspect of this invention addresses the problem of improving the roundness of an arc plate during the rolling process. Further, in a tensioning module, one tensioner is fixed to one end of the first main frame, while the remaining tensioners are rotatably connected to the first main frame. During rotation, each tensioner maintains its radial orientation along the first main frame. Two synchronous ropes connect adjacent tensioners. Initially, all tensioners are located at the exit of the vertical plate rolling machine. During the rolling process, after one end of the plate passes through the exit of the vertical plate rolling machine, the outermost tensioner is first placed against the inner surface of the arc plate. The suction component at the end of this tensioner then adsorbs the arc plate. The outermost tensioner rotates synchronously with the arc plate, and the synchronous ropes drive the remaining tensioners to unfold sequentially, evenly abutting and adsorbing against the arc plate. This provides more uniform and stable support for the arc plate, effectively preventing deformation and ensuring and improving its roundness.

[0011] To address the issue of maintaining the radial orientation of each tensioner along the first main frame during rotation, a first slide rail is constructed on the outer surface of the first main frame. This first slide rail has an arc-shaped structure and is coaxial with the first main frame. A second slide rail, also arc-shaped and coaxial with the first main frame, is located outside the first slide rail. Each tensioner has a limiting part that adapts to both the first and second slide rails. This effectively constrains and limits the tensioners through the cooperation of the two limiting parts with the first and second slide rails, ensuring that the tensioners maintain their radial orientation along the first main frame during rotation. Furthermore, by connecting two synchronous ropes between adjacent tensioners, not only is a linkage function achieved, but the two synchronous ropes can also pull the tensioners from different positions, further guaranteeing that the tensioners maintain their radial orientation along the first main frame during rotation.

[0012] To address the issue of sequentially unfolding and evenly supporting the arc plate during the rolling process, permanent magnets are further installed on the sides of each tensioner to attract adjacent tensioners. These magnets generate an attractive force on neighboring tensioners. Initially, the spacing between the tensioners is minimal, and they are concentrated near the exit of the vertical plate rolling machine. During operation, the outermost tensioner rotates synchronously with the arc plate. Upon reaching a certain angle, it drives the adjacent tensioner to rotate via a synchronous rope. At this point, the angle between the two tensioners reaches a preset angle. This process continues, allowing the tensioners to unfold sequentially during the rolling process, ensuring even distribution along the circumference of the arc plate. This provides better support and constraint, effectively preventing deformation and maintaining the roundness of the arc plate.

[0013] To address the issue of adapting to rotor chamber cylinders of different sizes, the length of each tensioner in the tensioning module is further adjustable. This allows the tensioners to adapt to arc plates of different sizes, thus achieving the goal of adapting to rotor chamber cylinders of different sizes.

[0014] Preferably, the tensioner includes a fixed rod, an adjusting member, and a movable rod arranged radially along the first main frame. The fixed rod has an internal channel with a square structure. The adjusting member is rotatably constrained to the other end of the fixed rod and has a threaded hole coaxial with the internal channel. One end of the movable rod has a slider adapted to the internal channel, which is disposed within the internal channel. The movable rod has external threads, and the adjusting member is threadedly connected through the engagement of the threaded hole and the external threads. The adsorption component is fixed to the other end of the movable rod. The distance between the end face of the adsorption component and the rotation center of the first main frame can be equal to the inner diameter of the cylinder. The length of the tensioner can be adjusted by rotating the adjusting member, thus accommodating cylinders with different inner diameters.

[0015] The fourth aspect of this invention addresses the problem of improving the roundness of conical plates during the rolling process. Further, in a constraint module, one constraint is fixed to one end of the second main frame, while the remaining constraintes are rotatably connected to the second main frame. During rotation, each constraint maintains its radial orientation along the second main frame. Two synchronous ropes connect adjacent constraint pairs. Initially, all constraint pairs are located at the exit of the vertical conical roll rolling machine. During the rolling process, after one end of the plate passes through the exit of the vertical conical roll rolling machine, the outermost constraint is first placed against the inner surface of the conical plate, and the suction component at the end of this constraint adsorbs the conical plate. The outermost constraint rotates synchronously with the conical plate, and the synchronous ropes drive the remaining constraint pairs to unfold sequentially and evenly abut and adsorb onto the conical plate, thus providing more uniform and stable support for the conical plate. This effectively prevents deformation of the conical plate and effectively ensures and improves its roundness.

[0016] To address the issue of maintaining the radial orientation of each restraint along the second main frame during rotation, the outer surface of the second main frame is further provided with a first track, which is an arc-shaped structure and coaxial with the second main frame. A second track, also an arc-shaped structure, is provided on the outer side of the second main frame and coaxial with the second main frame, located outside the first track. The restraints are provided with limiting parts that respectively adapt to the first and second tracks.

[0017] To address the issue of each constraint unfolding sequentially and evenly supporting the conical plate during the rolling process, permanent magnets are further provided on the sides of each constraint to attract adjacent constraints.

[0018] To address the issue of adapting to rotor housing cones of different sizes, the length of each constraint in the constraint module is further adjustable. This allows the constraint to adapt to conical plates of different sizes, thus achieving the goal of adapting to rotor housing cones of different sizes.

[0019] Preferably, the adsorption component is an electromagnetic chuck; each electromagnetic chuck of the tensioner in the tensioning module is equipped with a control switch, which is connected to the power supply line of the electromagnetic chuck, and the control switch is used to control the opening and closing of the electromagnetic chuck; each electromagnetic chuck of the constraint module is equipped with a control switch, which is connected to the power supply line of the electromagnetic chuck, and the control switch is used to control the opening and closing of the electromagnetic chuck. This allows for more timely adsorption of corresponding arc-shaped or conical plates as needed.

[0020] The fifth aspect of this invention addresses the problem of improving the manufacturing precision of the rotor housing. Furthermore, the assembly fixture further includes a positioning surface and a centering mechanism. The centering mechanism includes a drive motor and two positioning rods symmetrically arranged along the center of the positioning platform. The two positioning rods extend out of the positioning surface, and the drive motor is connected to the two positioning rods for driving the two positioning rods to move synchronously in opposite directions. In this solution, a positioning surface is configured to position and constrain the flange, ensuring it remains horizontal. An alignment mechanism is used, in which two positioning rods are symmetrically arranged around the center of the positioning platform. These rods can be driven to move synchronously away from each other. Furthermore, since the center hole of the flange is circular, the motor, positioning rods, and center hole work together to drive the two positioning rods to move synchronously away from each other, automatically translating the flange and completing the alignment process. This ensures the flange's central axis coincides with the positioning platform's central axis, allowing the flange to serve as a positioning reference. This ensures precise alignment of the flange, cone, and cylinder during subsequent assembly, preventing misalignment and facilitating assembly and welding. It also significantly reduces errors and subsequent machining corrections, effectively improving the manufacturing precision of the rotor housing.

[0021] The sixth aspect of this invention addresses the problem of adjusting welding parameters according to different plate thicknesses to improve welding quality. Furthermore, the assembly fixture is equipped with a lifting mechanism, which includes a hydraulic device and multiple hydraulic cylinders. The base has several hydraulic holes, evenly arranged along the circumference of the positioning platform. Each hydraulic cylinder is installed within one of these hydraulic holes and connected to the hydraulic device for vertical lifting under its drive. In practice, the lifting mechanism allows for precise adjustment of the flange and cylinder positions. This enables adjustment of the distance between the outer edge of the flange and the lower end of the cone, and the distance between the upper end of the cylinder and the upper end of the cone, according to actual needs. This satisfies the welding requirements of different plate thicknesses and different processes, effectively improving welding quality.

[0022] The seventh aspect of this invention addresses the problem that deformation of the cylindrical arc plate during the rolling process affects assembly, welding accuracy, and internal stress within the cylinder. Furthermore, it includes a vertical plate rolling machine for rolling the arc plate. A first base is disposed on one side of the vertical plate rolling machine. When the attitude stabilization device is disposed on the first base, the rotation center of the plate during the rolling process in the vertical plate rolling machine coincides with the rotation center of the tensioning module. The length of each tensioner in the tensioning module is adapted to the inner diameter of the rolled arc plate. In this solution, by rationally setting the position of the first base, the rotation center of the plate during the rolling process in the vertical plate rolling machine is aligned with the rotation center of the tensioning module. Furthermore, the length of each tensioner in the tensioning module can be adapted to the inner diameter of the rolled arc plate. This allows for smoother coordination between the attitude stabilization device and the vertical plate rolling machine, enabling the arc plate extending from the exit of the vertical plate rolling machine to adhere to the tensioner without external load and be successfully captured by the tensioner, preventing deformation of the arc plate. Through the coordination of the first base, the attitude stabilization device, and the vertical plate rolling machine, during the rolling process of the arc plate, especially when the arc plate detaches from the vertical plate rolling machine, it can be simultaneously captured by the tensioners in the auxiliary tooling of the cylinder. This allows the tensioners to abut and adhere to the arc plate, stabilizing it earlier and preventing deformation during rolling. It also effectively prevents an increase in internal stress in the arc plate and ensures its roundness, preventing localized deformation.

[0023] The eighth aspect of this invention addresses the problem that deformation of a tapered plate during the rolling process affects assembly, welding accuracy, and internal stress within the tapered plate. Furthermore, it includes a vertical tapered roller rolling machine for rolling tapered plates. A second base is disposed on one side of the vertical tapered roller rolling machine. When a state-holding device is disposed on the second base, the rotation center of the plate during the rolling process within the vertical tapered roller rolling machine coincides with the rotation center of the constraint module. Each constraint in the constraint module is adapted to the inner diameter and taper of the rolled tapered plate. In this solution, by rationally setting the position of the second base, the rotation center of the sheet metal during the rolling process in the vertical conical roll mill is aligned with the rotation center of the constraint module. Furthermore, each constraint in the constraint module can adapt to the inner diameter and taper of the rolled conical sheet, thus enabling a smoother cooperation between the state-holding device and the vertical conical roll mill. This allows the conical sheet extending from the exit of the vertical conical roll mill to adhere to the constraint without external load, ensuring it is successfully captured and preventing deformation. Through the cooperation of the second base, the state-holding device, and the vertical conical roll mill, during the rolling process, especially as the conical sheet detaches from the vertical conical roll mill, it can be simultaneously captured by the constraint in the conical auxiliary tooling. This allows the constraint to abut and adhere to the conical sheet, stabilizing it earlier and preventing deformation during rolling. It also effectively prevents increased internal stress in the conical sheet, maintains its roundness, and prevents localized deformation.

[0024] Compared with the prior art, the auxiliary processing system for rotor housing of large megawatt direct-drive wind turbines provided by this invention can not only solve the deformation problem in the rotor housing rolling and transfer process at the same time, and further improve the manufacturing accuracy and performance of the rotor housing, but also effectively simplify the processing technology of the rotor housing, making the processing of large rotor housing simpler and more reliable. Attached Figure Description

[0025] Figure 1 This is a front view of a first base provided in an embodiment of the present invention.

[0026] Figure 2 for Figure 1 Top view.

[0027] Figure 3 A front view of an attitude stabilization device (first attitude stabilization device) mounted on a first base.

[0028] Figure 4 for Figure 3 A partial cross-sectional view of the tensioner.

[0029] Figure 5 This is a top-down view of the auxiliary tooling for rolling a cylindrical plate in conjunction with a vertical plate rolling machine.

[0030] Figure 6 A top-view diagram showing the completed process of using auxiliary tooling for rolling a cylindrical body with a vertical plate rolling machine.

[0031] Figure 7 for Figure 6 The main view.

[0032] Figure 8 This is a top view of the two attitude stabilization devices joined together.

[0033] Figure 9 for Figure 8 The main view.

[0034] Figure 10 A front view of a state holding device (first state holding device) disposed on a second base.

[0035] Figure 11 for Figure 10 In the middle, a partial sectional view of the constraint.

[0036] Figure 12 A top-down view of the cone-shaped plate being rolled using auxiliary tooling and a vertical cone roll mill.

[0037] Figure 13 for Figure 12 The main view.

[0038] Figure 14 A top view of the two state-holding devices joined together.

[0039] Figure 15 for Figure 14 The main view.

[0040] Figure 16 This is a top view of an assembly tooling.

[0041] Figure 17 for Figure 16 The main view.

[0042] Figure 18 This is the front view showing the flange placed in the assembly fixture.

[0043] Figure 19 To be Figure 15 The cone-shaped auxiliary tooling shown is positioned in the front view after the assembly tooling is installed.

[0044] Figure 20 The front view after adjusting the height of the flange so that the relative position of the flange and the cone meets the welding requirements.

[0045] Figure 21 To place the positioning post and Figure 14The auxiliary tooling for the cylinder shown is positioned in the main view after the assembly tooling is installed.

[0046] Figure 22 To be Figure 20 The cone auxiliary tooling, together with the cone and flange, is positioned in the main view after the assembly tooling is installed.

[0047] Figure 23 The front view after adjusting the height of the cylinder so that the relative position of the cylinder and the cone meets the welding requirements.

[0048] Figure 24 for Figure 23 A magnified view of a portion of point I in the middle.

[0049] Figure 25 This is a top view of another assembly fixture provided in Embodiment 3 of the present invention.

[0050] Figure 26 for Figure 25 Front view diagram.

[0051] Explanation of markings in the diagram: Attitude stabilization device (first attitude stabilization device) 11, second attitude stabilization device 12; first main frame 20, first slide rail 201, second slide rail 202, upper constraint plate 203, lower constraint plate 204, support frame 205, groove 206; first connector 21, semi-circular slot (circular slot) 211; tensioner (first tensioner) 221, second tensioner 222, third tensioner 223, fourth tensioner 224, fifth tensioner 225, sixth tensioner 226; Fixed rod 23, limiting part 231, internal channel 232, permanent magnet 233, horizontal rod 234, tilting rod 235, circular channel 236, guide bar 237; Adjusting part 24, threaded hole 241; Movable rod 25, external thread 251, slider 252, guide groove 253; Adsorption component 26, hinge 261; Synchronous rope 27; First base (second base) 30, base 31, connector 32, first positioning groove 321, second positioning groove 322; State holding device ( First state holding device 41, second state holding device 42; second main frame 50, first track 501, second track 502, second connector 51, lock hole 511, restraint (first restraint) 521, second restraint 522, third restraint 523, fourth restraint 524, fifth restraint 525, sixth restraint 526, pitch adjustment mechanism 53, support lug 531, arc-shaped slot 532; fastener 60, weld 61; assembly tooling 70, base 71, fixed Surface 711, guide hole 712, positioning platform 72, first central through hole 721, second central through hole 722, positioning column 73, positioning hole 731, hydraulic cylinder 74, drive motor 751, lead screw 752, threaded section 753, nut 754, positioning rod 755; vertical plate rolling machine 81, main roller 811, auxiliary roller 812, vertical conical roller plate rolling machine 82; plate 90, arc plate 91, bevel 911, conical plate 92, flange 93, center hole 935, cone 94, cylinder 95. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0053] Example 1

[0054] This embodiment provides an auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine, including a cylindrical auxiliary fixture, a conical auxiliary fixture, and an assembly fixture 70, wherein, as shown... Figures 1-4 As shown, the auxiliary tooling for the cylinder includes two attitude stabilizing devices 11 (for ease of description, the two attitude stabilizing devices 11 can be referred to as the first attitude stabilizing device 11 and the second attitude stabilizing device 12, respectively) and a first base 30. The two attitude stabilizing devices 11 can be spliced ​​into a whole or used separately. The first base 30 is adapted to each of the two attitude stabilizing devices 11, so that in use, the two attitude stabilizing devices 11 can be installed on the first base 30 respectively. The first base 30 is mainly used to stably support the attitude stabilizing devices 11 and prevent the attitude stabilizing devices 11 from tipping over.

[0055] In this embodiment, the auxiliary tooling for the cylinder is mainly used to cooperate with the existing vertical plate rolling machine 81, so that during the rolling process, the auxiliary tooling can simultaneously support and stabilize the arc plate 91 that has just left the exit of the vertical plate rolling machine 81, such as... Figure 5 As shown, this prevents deformation of the arc plate 91 during the rolling process and subsequent transfer, thereby effectively ensuring the roundness and dimensions of the arc plate 91. To simplify the structure, in this embodiment, the first attitude stabilizing device 11 and the second attitude stabilizing device 12 can have the same structure. In implementation, the attitude stabilizing device 11 (such as the first attitude stabilizing device 11) is equipped with at least one set of tensioning modules along the height direction. The number of tensioning modules can be one, two, three, etc., and the specific number can be determined based on the height of the cylinder 95. For example, this embodiment requires the processing of a rotor house for a 14MW direct-drive offshore wind turbine. The diameter of the cylinder 95 is approximately 9 meters, and the height is approximately 2.6 meters. Therefore, as... Figure 3 and Figure 7 As shown, the attitude stabilization device 11 provided in this embodiment is equipped with two sets of tensioning modules. One set of tensioning modules is located at the lower part of the corresponding cylinder, and the other set of tensioning modules corresponds to the middle or upper-middle part of the cylinder. In implementation, the tensioning module includes at least three tensioners 221 that can rotate in a circumferential direction, such as... Figure 3 As shown, the number of tensioners 221 can be determined according to factors such as the size and weight of the cylinder. In implementation, one end of the tensioner 221 is fixedly installed, while the remaining tensioners 221 are movably installed. For example, such as... Figure 3 , Figure 7 As shown, the attitude stabilization device 11 also includes a first main frame 20 adapted to the first base 30. A tensioning module is disposed on the first main frame 20. Specifically, in implementation, the first main frame 20 can preferably adopt a semi-cylindrical or semi-cylindrical structure, such as... Figure 3 and Figure 5As shown, the lower end of the first main frame 20 is equipped with a first connector 21 that mates with the first base 30, so that the first main frame 20 can be vertically fixed to the first base 30 through the engagement of the first connector 21 with the first base 30. For example, as Figures 5-8 As shown, the tensioning module may include six tensioners 221, one of which (for ease of description, it may be referred to as the first tensioner 221) is horizontally fixed to one end of the first main frame 20, as shown. Figure 5 and Figure 6 As shown, the tensioner 221 includes a fixed rod 23, an adjusting member 24, a movable rod 25, and an adsorption component 26 arranged radially along the first main frame 20. The fixed rod 23 has an internal channel 232 with a square structure. One end of the fixed rod 23 is fixed to the first main frame 20, and the adjusting member 24 is rotatably constrained to the other end of the fixed rod 23. Figure 3 and Figure 4 As shown, the adjusting member 24 has a threaded hole 241, which is coaxial with the internal channel 232; one end of the movable rod 25 is provided with a slider 252 adapted to the internal channel 232, and the slider 252 is disposed within the internal channel 232, so that the movable rod 25 can move radially along the internal channel 232 of the fixed rod 23, but cannot rotate relative to the fixed rod 23; at the same time, the movable rod 25 is provided with an external thread 251, such as... Figures 3-8 As shown, the adjusting component 24 is threadedly connected through the threaded hole 241 and the external thread 251. Thus, by rotating the adjusting component 24, the radial extension and retraction of the movable rod 25 can be precisely controlled, so as to achieve the purpose of fine-tuning the length of the tensioner 221, so as to better adapt to cylinders with different inner diameters. The adsorption component 26 is fixed to the other end of the movable rod 25. The distance between the end face of the adsorption component 26 and the rotation center (hereinafter referred to as the center) of the first main frame 20 can be equal to the inner diameter (inner radius, which will not be described in detail below) of the cylinder 95.

[0056] In implementation, the structure of the remaining five tensioners 221 (which, for ease of description, can be referred to as the second tensioner 222, the third tensioner 223, the fourth tensioner 224, the fifth tensioner 225, and the sixth tensioner 226) can be basically the same as the structure of the tensioner 221 described above. The difference is that the remaining five tensioners 221 are not fixedly installed on the first main frame 20, but are movably installed on the first main frame 20. Specifically, as follows... Figures 3-8 As shown, the remaining tensioners 221 may include a fixed rod 23, an adjusting member 24, a movable rod 25, and an adsorption component 26 arranged radially along the first main frame 20. The fixed rod 23 has an internal channel 232 with a square structure. One end of the fixed rod 23 is rotatably connected to the first main frame 20 along its center. The adjusting member 24 is rotatably constrained to the other end of the fixed rod 23. Figures 3-8As shown, the adjusting member 24 has a threaded hole 241, which is coaxial with the internal channel 232; one end of the movable rod 25 is provided with a slider 252 adapted to the internal channel 232, and the slider 252 is disposed within the internal channel 232, so that the movable rod 25 can move radially along the internal channel 232 of the fixed rod 23, but cannot rotate relative to the fixed rod 23; at the same time, the movable rod 25 is provided with an external thread 251, such as... Figure 4 As shown, the adjusting component 24 achieves a threaded connection through the engagement of the threaded hole 241 and the external thread 251. This allows for precise control of the radial extension and retraction of the movable rod 25 by rotating the adjusting component 24, thus achieving fine-tuning of the length of the tensioner 221 to better adapt to cylinders of different inner diameters. Figures 3-8 As shown, the adsorption component 26 is fixed to the other end of the movable rod 25, and the distance between the end face of the adsorption component 26 and the rotation center of the first main frame 20 can be equal to the inner diameter of the cylinder. In implementation, the movable rod 25 is also provided with scale lines, which makes it easier to adjust and control the length of the tensioner 221.

[0057] like Figures 3-7 As shown, in this embodiment, the outer surface of the first main frame 20 is provided with a first slide rail 201. The first slide rail 201 is constructed with an arc-shaped structure and is coaxial with the first main frame 20. The end of the fixing rod 23 is provided with a limiting part 231 adapted to the first slide rail 201. In implementation, the limiting part 231 can be a limiting block, a limiting wheel, etc. Figure 3 As shown, in this embodiment, the limiting part 231 is a bearing, which is constrained within the first slide rail 201. The fixing rod 23 can roll along the first slide rail 201 via the bearing. To ensure that each tensioner 221 can always maintain its radial orientation along the first main frame 20 during use, a further embodiment also includes a second slide rail 202. The second slide rail 202 is constructed with an arc-shaped structure, is coaxial with the first main frame 20, and is located outside the first slide rail 201, as shown. Figure 3 and Figure 6 As shown. In implementation, the first slide 201 can be formed by an upper constraint plate 203 and a lower constraint plate 204. One end of the upper constraint plate 203 and the lower constraint plate 204 can be fixedly connected to the first tensioner 221, and the upper constraint plate 203 and the lower constraint plate 204 can be connected to the first main frame 20 respectively through multiple support frames 205, as shown. Figure 3As shown, this provides more stable support for each tensioner 221, effectively improving the load-bearing capacity of the first attitude stabilizing device 11. In implementation, the fixing rod 23 also has a limiting part 231 adapted to the second slide rail 202. Similarly, the limiting part 231 can also be a limiting block, limiting wheel, etc., as shown in the figure. In this embodiment, the limiting part 231 uses a bearing, which is constrained within the second slide rail 202. The fixing rod 23 can roll along the second slide rail 202 via the bearing. Through the cooperation of the fixing rod 23 with the first slide rail 201 and the second slide rail 202, not only is the load-bearing capacity significantly improved, but it also helps the tensioner 221 maintain its radial position along the first main frame 20 during movement, thus better supporting the arc plate 91 and preventing deformation of the arc plate 91.

[0058] To ensure that the tensioner 221 maintains its radial orientation along the first main frame 20 during movement and when it finally comes to rest, two synchronous ropes 27 are installed between the fixing rods 23 of adjacent tensioners 221 during implementation. Figure 6 and Figure 8 As shown, not only can linkage be achieved through the synchronous rope 27, but two synchronous ropes 27 can also be used to ensure that the tensioner 221 always maintains its radial orientation along the first main frame 20, thus ensuring the roundness of the circular plate. In implementation, steel wire ropes can be preferred for the synchronous ropes 27.

[0059] To achieve the effect of sequentially unfolding each tensioner 221 in the tensioning module, in a further embodiment, a permanent magnet 233 is respectively provided on the side of the fixing rod 23 in each tensioner 221, such as... Figure 6 As shown, the permanent magnet 233 generates an attractive force on the adjacent fixed rod 23, so that the initial spacing between each tensioner 221 is minimized and concentrated near the first tensioner 221. In use, the outermost tensioner 221 (i.e., the sixth tensioner 226) rotates synchronously with the arc plate 91. When it rotates to a certain angle, the synchronous rope 27 drives the adjacent tensioner 221 (i.e., the fifth tensioner 225) to start rotating. At this time, the included angle between the fifth tensioner 225 and the sixth tensioner 226 reaches the preset angle. And so on. During the rolling process of the arc plate 91, each tensioner 221 can be unfolded in sequence so that it can be evenly distributed along the circumference of the arc plate 91, thereby achieving better support and constraint of the arc plate 91, effectively preventing the arc plate 91 from deforming, and better maintaining the roundness of the arc plate 91.

[0060] Since each tensioner 221 is arranged radially along the first main frame 20, and the tensioner 221 can rotate along the circumference of the first main frame 20, during the rotation, each tensioner 221 remains radially distributed along the first main frame 20, so as to better maintain the roundness of the arc plate 91 and prevent the front end of the arc plate 91 from deforming due to gravity and other factors after it leaves the vertical plate rolling machine 81.

[0061] In implementation, the adsorption component 26 can be implemented in various ways. For example, the adsorption component 26 can be a negative pressure suction cup, an electromagnetic suction cup, etc. The shape of the adsorption component 26 can be determined according to actual needs. As an example, in this embodiment, the adsorption component 26 uses an electromagnetic suction cup (or electromagnet). The electromagnetic suction cup has a long strip structure, and its length direction is consistent with the vertical direction, so as to contact and adsorb the arc plate 91 along the height direction of the cylinder. Figures 5-9 As shown, this design not only adapts to arc plates 91 with different inner diameters, improving versatility, but also covers a larger area, providing greater adsorption force to the arc plate 91, thereby improving the load-bearing capacity of the entire attitude stabilization device 11. Furthermore, it is more conducive to maintaining the arc plate 91 in a vertical state, preventing deformation. In implementation, each tensioner 221 in the tensioning module has an electromagnetic chuck equipped with a control switch. These control switches can be located on the electromagnetic chuck's power supply line and are used to control the opening and closing of the electromagnetic chuck. During use, when the tensioner 221 is fully extended, the corresponding control switch can be used to open the electromagnetic chuck, which generates magnetic force and firmly adheres to the inner surface of the arc plate 91.

[0062] In implementation, the two attitude stabilization devices 11 have identical structures. During use, the first main frames 20 of the two attitude stabilization devices 11 can be spliced ​​together, such as... Figure 7 and Figure 8 As shown, on the one hand, the two first main frames 20 can be spliced ​​into a cylindrical support column to facilitate high-precision positioning and constraint during subsequent processing. On the other hand, the two attitude stabilization devices 11 can be connected into a whole for subsequent overall hoisting and transfer. In addition, the two ends of the two arc plates 91 tensioned on the two attitude stabilization devices 11 are precisely aligned, and the two arc plates 91 can jointly form a more standardized cylindrical structure with less stress, so that a higher quality cylinder can be obtained through subsequent welding.

[0063] In this embodiment, the cone auxiliary tooling includes two state holding devices 41 (for ease of description, the two state holding devices 41 can be referred to as the first state holding device 41 and the second state holding device 42, respectively, and will not be described again below) and a second base 30, as follows Figures 10-15As shown, the two state holding devices 41 can be spliced ​​into a whole or used separately. The second base 30 is adapted to each of the two state holding devices 41, so that when in use, the two state holding devices 41 can be installed on the second base 30 respectively. The second base 30 is mainly used to support the state holding devices 41.

[0064] In this embodiment, the cone auxiliary tooling is mainly used to cooperate with the existing vertical cone roll bending machine 82, such as... Figure 12 As shown, during the rolling process, the cone auxiliary tooling can simultaneously support and stabilize the cone plate 92 that has just detached from the vertical cone roll rolling machine 82, preventing the cone plate 92 from deforming during the rolling process and subsequent transfer process, thereby effectively ensuring the roundness and size of the cone plate 92.

[0065] To simplify the structure, in this embodiment, the first state-holding device 41 and the second state-holding device 42 can have the same structure. In implementation, the principle of the state-holding device 41 can be the same as that of the attitude stabilization device 11, with only minor structural differences. Specifically, in this embodiment, the state-holding device 41 is equipped with at least one set of constraint modules along the height direction. In implementation, the number of constraint modules can be one, two, three, etc., and the number can be determined based on the height of the cone. For example, this embodiment requires the fabrication of a rotor house for a 14MW direct-drive offshore wind turbine. The diameter of the large end of the cone is approximately 9 meters, the diameter of the small end is approximately 6 meters, and the height is approximately 0.5 meters. Therefore, since the height of the cone is not very high, the state-holding device 41 provided in this embodiment is equipped with one set of constraint modules, such as... Figure 10 and Figure 12 As shown, the constraint module includes at least three constraint devices 521 that can rotate in a circumferential direction, such as... Figure 10 and Figure 12 As shown, the number of restraints 521 can be determined based on factors such as the size and weight of the cone 94. For example, such as... Figure 10 As shown, the state holding device 41 also includes a second main frame 50 adapted to the second base 30. The constraint module is disposed on the second main frame 50. Specifically, in implementation, the second main frame 50 can preferably adopt a semi-cylindrical structure or a semi-cylindrical structure, such as... Figure 10 and Figure 12 As shown, the lower end of the second main frame 50 is equipped with a second connector 51 adapted to the second base 30, so that the second main frame 50 can be vertically fixed to the second base 30 through the cooperation of the second connector 51 and the second base 30. Meanwhile, as... Figure 12As shown, the constraint module may include six constraint devices 521. Similarly, in implementation, the structure of each constraint device 521 can be basically the same, only the installation method differs. Specifically, one constraint device 521 (for ease of description, it can be referred to as the first constraint device 521) is fixedly installed at one end of the second main frame 50, as shown below. Figure 12 As shown, the remaining restraints 521 are rotatably mounted on the second main frame 50 and can rotate relative to the center of the second main frame 50. For the fixedly mounted restraint 521, the restraint 521 includes a fixed rod 23, an adjusting member 24, a movable rod 25, and an adsorption component 26 arranged radially along the second main frame 50, such as... Figures 10-15 As shown, the fixed rod 23 includes a horizontal rod 234 and an inclined rod 235. One end of the horizontal rod 234 is fixed to the second main frame 50, and the inclined rod 235 is connected to the other end of the horizontal rod 234 to form an elbow, as shown. Figure 10 and Figure 11 As shown, the tilting rod 235 has a circular channel 236 adapted to the movable rod 25. The circular channel 236 passes through both ends of the tilting rod 235. A guide strip 237 along its length is also provided inside the circular channel 236. The adjusting member 24 is rotatably constrained to the other end of the tilting rod 235. Figure 11 As shown, the adjusting member 24 has a threaded hole 241, which is coaxial with the circular channel 236. The movable rod 25 has an external thread 251 that matches the threaded hole 241, and a guide groove 253 that matches the guide bar 237 is constructed along the length of the movable rod 25. The movable rod 25 is threadedly connected to the threaded hole 241, and one end of the movable rod 25 extends into the circular channel 236. The guide bar 237 is inserted into the guide groove 253, so that the movable rod 25 can move along the circular channel 236 of the inclined rod 235, but cannot rotate relative to the inclined rod 235. In use, the extension and retraction of the movable rod 25 can be precisely controlled by rotating the adjusting member 24 to achieve the purpose of fine-tuning the length of the constraint device 521, so as to better adapt to cones with different inner diameters and tapers. The adsorption component 26 is hinged to the other end of the movable rod 25 by 261, and a pitch adjustment mechanism 53 is also provided between the movable rod 25 and the adsorption component 26 so that the pitch angle of the adsorption component 26 can be adjusted by the pitch adjustment mechanism 53, thereby adapting to cones of different sizes and different tapers.

[0066] In implementation, for the remaining five movable restraints 521 (which, for ease of description, can be referred to as the second restraint 522, the third restraint 523, the fourth restraint 524, the fifth restraint 525, and the sixth restraint 526), ​​the outer surface of the second main frame 50 is constructed with a first track 501, such as... Figure 10 and Figure 12As shown, the first track 501 has an arc-shaped structure, and it is coaxial with the second main frame 50. The end of the horizontal bar 234 in the constraint device 521 is provided with a limiting part 231 adapted to the first track 501. In implementation, the limiting part 231 can be a limiting block, a limiting wheel, etc. Figure 10 As shown, in this embodiment, the limiting part 231 is a bearing, which is constrained within the first track 501. The horizontal rod 234 can roll along the first track 501 via the bearing. To ensure that each constraint 521 can always maintain its radial orientation along the second main frame 50 during use. In a further embodiment, a second track 502 is also included. The second track 502 is constructed with an arc-shaped structure. The second track 502 is coaxial with the second main frame 50, and the second track 502 is located outside the first track 501, as shown. Figure 12 As shown. In implementation, the second track 502 can be formed by an upper constraint plate 203 and a lower constraint plate 204. One end of the upper constraint plate 203 and the lower constraint plate 204 can be fixedly connected to the first constraint device 521, and the upper constraint plate 203 and the lower constraint plate 204 can be connected to the second main frame 50 through multiple support frames 205, thereby providing more stable support for each constraint device 521 and effectively improving the load-bearing capacity of the state-maintaining device 41. In implementation, the horizontal bar 234 is also constructed with a limiting part 231 adapted to the second track 502. Similarly, the limiting part 231 can also be a limiting block, a limiting wheel, etc. In this embodiment, the limiting part 231 is a bearing, which is constrained within the second track 502, and the horizontal bar 234 can roll along the second track 502 through the bearing. By cooperating with the horizontal bar 234 and the first track 501 and the second track 502, not only can the load-bearing capacity be significantly improved, but the restraint 521 is also able to maintain its radial orientation along the second main frame 50 during movement, thereby better supporting the tapered plate 92 and preventing deformation of the tapered plate 92. In implementation, the structure of the first track 501 and the second track 502 can be the same as the structure of the first slide rail 201 and the second slide rail 202, respectively, which will not be described in detail here.

[0067] To ensure that the restraint 521 maintains its radial orientation along the second main frame 50 during movement and when it finally comes to rest, two synchronous ropes 27 are also installed between the fixing rods 23 of adjacent restraints 521 during implementation. Figure 12 and Figure 14 As shown, not only can linkage be achieved through the synchronization rope 27, but two synchronization ropes 27 can also be used to ensure that the restraint device 521 always maintains its radial orientation along the second main frame 50, further ensuring the roundness of the conical plate 92. In implementation, steel wire ropes can be preferred for the synchronization rope 27.

[0068] To support the conical plate 92 more promptly and earlier, and to maintain the stability of the conical plate 92, in a further embodiment, permanent magnets 233 are respectively provided on the side of the fixing rod 23 in each constraint 521. The permanent magnets 233 generate an attractive force on the adjacent fixing rods 23, so that the initial spacing between each constraint 521 is minimized and concentrated near the position of the first constraint 521. In use, the outermost constraint 521 (i.e., the sixth constraint 526) is first connected to the conical plate 92 and rotates synchronously. When it rotates to a certain angle, the adjacent constraint 521 (i.e., the fifth constraint 525) is driven to start rotating through the synchronous rope 27. At this time, the included angle between the fifth constraint 525 and the sixth constraint 526 reaches the preset angle. In this way, during the rolling process of the conical plate 92, each constraint 521 can be unfolded in sequence so that it can be evenly distributed along the circumference of the conical plate 92, thereby achieving better support and constraint of the conical plate 92, effectively preventing the conical plate 92 from deforming, and better maintaining the roundness of the conical plate 92.

[0069] Since each constraint 521 is arranged radially along the second main frame 50, and the constraint 521 can rotate along the circumference of the second main frame 50, during the rotation, each constraint 521 remains radially distributed along the second main frame 50, so as to better maintain the roundness of the conical plate 92 and prevent the front end of the conical plate 92 from deforming due to gravity and other factors after it leaves the vertical conical roll plate rolling machine 82.

[0070] Similarly, in implementation, the adsorption component 26 can be a negative pressure suction cup, an electromagnetic suction cup, etc. In this embodiment, the adsorption component 26 uses an electromagnetic suction cup (or electromagnet). The electromagnetic suction cup has a long strip structure, such as... Figure 11 and Figure 12 As shown. In this embodiment, the pitch adjustment mechanism 53 includes a lug 531 fixed to the adsorption component 26. The lug 531 has an arc-shaped slot 532, as shown. Figure 11As shown, the center of the arc-shaped slot 532 coincides with the center of the hinge 261 of the adsorption component 26. Simultaneously, the movable rod 25 has a connecting hole adapted to the arc-shaped slot 532. After the pitch angle of the adsorption component 26 is adjusted to the correct position, the lug 531 can be fixed to the movable rod 25 using the fastener 60 that matches the connecting hole, thereby achieving the purpose of fixing the adsorption component 26. This allows the adsorption component 26 to better fit the tapered plate 92 (or cone 94) with different tapers, significantly improving versatility. In implementation, each electromagnetic chuck of the constraint device 521 in the constraint module is equipped with a control switch. The control switch is connected to the power supply line of the electromagnetic chuck and is used to control the opening and closing of the electromagnetic chuck. During use, when the constraint device 521 is fully open, the corresponding control switch can be used to open the electromagnetic chuck. The electromagnetic chuck generates magnetic force and firmly adheres to the inner surface of the tapered plate 92, achieving the purpose of shaping the tapered plate 92 earlier.

[0071] In implementation, the two state-holding devices 41 have identical structures. During use, the second main frame 50 of the first state-holding device 41 and the second main frame 50 of the second state-holding device 42 can be spliced ​​together. On one hand, the two second main frames 50 can be spliced ​​into a cylindrical support column for high-precision positioning and constraint during subsequent processing. On the other hand, the first state-holding device 41 and the second state-holding device 42 can be connected as a whole for subsequent overall hoisting and transfer of the conical auxiliary tooling. More importantly, this ensures that the two ends of the two conical plates 92 constrained by the first state-holding device 41 and the second state-holding device 42 precisely align with each other, such as... Figure 14 and Figure 15 As shown, this allows the two conical plates 92 to together form a more standardized, less stress-laden conical structure, so that a higher quality cone can be obtained through subsequent welding.

[0072] In this embodiment, the assembly fixture 70 is configured to adapt to both the cylindrical auxiliary fixture and the conical auxiliary fixture. This not only greatly simplifies the machining process but also allows for the stable and deformation-free transfer of the cylindrical and conical parts to the assembly fixture 70 for high-precision assembly. In this embodiment, the assembly fixture 70 includes a support body 71, a positioning platform 72 that adapts to both the cylindrical and conical auxiliary fixtures, and a positioning post 73 that adapts to both the cylindrical and conical auxiliary fixtures. Figure 16 and Figure 17 As shown, the positioning post 73 is detachably mounted on the base 71. When the positioning post 73 is mounted on the base 71, the positioning post 73 and the positioning platform 72 are coaxial. Figure 21 As shown.

[0073] In implementation, the positioning platform 72 can be positioned at the center of the base 71. The positioning platform 72 has a cylindrical shape. Figure 21 As shown, the positioning stage 72 has a first central through hole 721 and a second central through hole 722 at its center. The diameter of the first central through hole 721 is larger than the diameter of the second central through hole 722, as shown. Figure 16 and Figure 17 As shown, the first central through hole 721, the second central through hole 722, and the positioning stage 72 are coaxial and can be ensured through machining. The outer diameter of the positioning post 73 is adapted to the inner diameter of the second central through hole 722, so that the positioning post 73 can be inserted into the second central through hole 722, as shown. Figure 21 As shown, the positioning post 73 can be detached.

[0074] The first connector 21 at the lower end of the first main frame 20 is adapted to the positioning platform 72, and when the two first main frames 20 in the cylinder auxiliary tooling are spliced ​​together, the two first connectors 21 are also spliced ​​together, forming a combined structure adapted to the positioning platform 72, such as Figure 16 and Figure 17 As shown. For example, as shown in the figure, the first main frame 20 is constructed as a semi-cylindrical structure, and the inner diameter of the first main frame 20 is adapted to the outer diameter of the positioning post 73; the first connector 21 is constructed with a semi-circular groove 211, such as... Figure 1 and Figure 2 As shown, the inner diameter of the semi-circular slot 211 is adapted to the outer diameter of the positioning table 72. When the two first main frames 20 are spliced ​​together, the center of the first main frames 20 forms a central circular channel, and the two first plugs 21 form a circular slot 211. The central axis of the central circular channel is coaxial with the central axis of the circular slot 211. Through the cooperation of the first plugs 21 and the positioning table 72, the auxiliary tooling of the cylinder can be accurately positioned, so that the central axis of the auxiliary tooling of the cylinder is coaxial with the positioning table 72.

[0075] Similarly, the lower end of the second main frame 50 is equipped with a second connector 51 that adapts to the second base 30, and when the two second main frames 50 in the cone auxiliary tooling are spliced ​​together, the two second connectors 51 are also spliced ​​together, forming a combined structure that adapts to the positioning platform 72. For example, as Figure 19 As shown, the second main frame 50 has a semi-cylindrical structure, and its inner diameter is adapted to the outer diameter of the positioning post 73; the second connector 51 also has a semi-cylindrical structure, as shown in the figure. Figure 19As shown, the outer diameter of the second connector 51 is smaller than the outer diameter of the second main frame 50, and the outer diameter of the second connector 51 is adapted to the inner diameter of the first central through hole 721 in the positioning table 72. When the two second main frames 50 are spliced ​​together, the center of the second main frames 50 forms a central circular channel, and the two second connectors 51 form a cylindrical plug. The central axis of the central circular channel is coaxial with the central axis of the cylindrical plug. Through the cooperation between the second connector 51 and the first central through hole 721 in the positioning table 72, the conical auxiliary tooling can be accurately positioned, so that the central axis of the conical auxiliary tooling is coaxial with the positioning table 72.

[0076] The positioning post 73 improves the stability of the cylindrical auxiliary tooling, allowing it to be placed more stably on the assembly tooling 70. To fix the conical auxiliary tooling to the positioning post 73, the second connector 51 has a locking hole 511 on its side. Figure 10 As shown, correspondingly, the positioning post 73 is constructed with a plurality of positioning holes 731 that adapt to the locking hole 511, such as Figure 21 As shown, each positioning hole 731 is arranged along the height direction of the positioning post 73. Not only can the cone auxiliary tooling be fixed to the positioning post 73 using fasteners 60 such as pins or bolts that are compatible with the locking hole 511 and the positioning hole 731, but the cone auxiliary tooling can also be fixed at different heights of the positioning post 73 according to actual conditions, so that the cone auxiliary tooling can be matched with the cylinder at different heights below to meet the assembly requirements of rotor rooms of various sizes.

[0077] To enable the cylindrical auxiliary tooling and the conical auxiliary tooling to cooperate with each other, during implementation, the upper end of the first main frame 20 can be configured to fit the lower end of the second main frame 50, so that the second main frame 50 can be inserted into the first main frame 20 by a certain distance, as shown in the figure. For example, a groove 206 can be constructed at the upper end of the first main frame 20, and the inner diameter of the groove 206 is greater than or equal to the outer diameter of the second connector 51, thereby allowing for a wider range of adjustment of the distance between the cylindrical auxiliary tooling and the conical auxiliary tooling.

[0078] In implementation, the two first main frames 20 in the cylindrical auxiliary tooling are configured for detachable connection, and the two second main frames 50 in the conical auxiliary tooling are also configured for detachable connection. For example, the two first main frames 20 can be securely spliced ​​together by clamps, or by fasteners 60 such as bolts or screws (for example, the two first main frames 20 are each constructed with corresponding through holes, the through holes being perpendicular to the height direction of the first main frames 20; during splicing, the two first main frames 20 can be securely spliced ​​together using fasteners 60 that fit the through holes). Similarly, the two second main frames 50 can also be securely spliced ​​together in the same way or structure, which will not be elaborated here.

[0079] In implementation, the vertical plate rolling machine 81 can be an existing vertical plate rolling machine 81, which typically includes a main roller 811 and two auxiliary rollers 812, with the main roller 811 positioned between the two auxiliary rollers 812, such as... Figure 5 and Figure 6 As shown, the main roller 811 and the two auxiliary rollers 812 are both cylindrical structures and are set vertically. The plate 90 passes through the main roller 811 and the two auxiliary rollers 812 to form an arc plate 91.

[0080] In implementation, the vertical conical roll plate bending machine 82 can be an existing vertical conical roll plate bending machine 82, which typically includes a main roll 811 and two auxiliary rolls 812, with the main roll 811 positioned between the two auxiliary rolls 812, such as... Figure 12 As shown, the main roller 811 and the two auxiliary rollers 812 are both frustum-shaped structures. The plate 90 passes through the main roller 811 and the two auxiliary rollers 812 to form a conical plate 92. In practice, the main roller 811 and the two auxiliary rollers 812 can be arranged vertically or at an angle so that the upper diameter of the formed conical plate 92 is large and the lower diameter is small. The rest of the structure of the vertical conical roller rolling machine 82 is the same as that of a conventional conical roller rolling machine, and will not be described in detail here.

[0081] In implementation, the first base 30 and the second base 30 can be adapted to the first connector 21 in the attitude stabilization device 11 and the second connector 51 in the state holding device 41, respectively. For example, the first base 30 may include a base 31 and a first connector 32 disposed at the center of the base 31. The first connector 32 is constructed with a first positioning groove 321 adapted to the shape of the first connector 21. In use, by inserting the first connector 21 into the first positioning groove 321, the attitude stabilization device 11 can be stably supported on the first base 30. Similarly, the second base 30 may include a base 31 and a second connector 32 disposed at the center of the base 31. The second connector 32 is constructed with a second positioning groove 322 adapted to the shape of the second connector 51. In use, by inserting the second connector 51 into the second positioning groove 322, the state holding device 41 can be stably supported on the second base 30. Of course, for a more secure connection, additional fasteners such as bolts 60 can be configured to strengthen the connection effect. Furthermore, in implementation, the first base 30 and the second base 30 can have the same structure, making them interchangeable. For example, the first base 30 includes a base 31 and a connector 32 that simultaneously adapts to the first connector 21 and the second connector 51. The connector 32 is constructed with a first positioning groove 321 adapting to the first connector 21 and a second positioning groove 322 adapting to the second connector 51. The first positioning groove 321 and the second positioning groove 322 are coaxial. Figure 1 and Figure 2 As shown, this allows the first base 30 and the second base 30 to be interchangeable, greatly reducing costs.

[0082] In a more refined design, the assembly fixture 70 is also equipped with a lifting mechanism, which includes hydraulic equipment and multiple hydraulic cylinders 74. The base 71 has several hydraulic holes, such as... Figure 25 As shown, the hydraulic holes are evenly arranged along the circumference of the positioning platform 72, and the hydraulic cylinders 74 are respectively installed in the hydraulic holes, as shown. Figure 25 As shown, each hydraulic cylinder 74 is connected to a hydraulic device. The hydraulic cylinder 74 is used for vertical lifting and lowering under the drive of the hydraulic device, so that the relative positions between the flange 93 and the cone 94, and between the cone 94 and the flange 93, can be adjusted during assembly. Existing technology can be used for the hydraulic cylinders 74 and the hydraulic device, and will not be elaborated further here.

[0083] In implementation, the top of the hydraulic cylinder 74 is also equipped with anti-slip components, such as an anti-slip block 252, a negative pressure suction cup, or an electromagnetic suction cup, to effectively improve stability during the lifting process. It can be understood that in actual use, the roundness of the arc plate 91 can be adjusted and corrected by the attitude stabilization device 11; similarly, the roundness and taper of the conical plate 92 can be adjusted and corrected by the state holding device 41. In a more complete solution, the mounting body 71 of the assembly fixture 70, the attitude stabilization device 11, the state holding device 41, the first base 30, and the second base 30 are each equipped with several lifting lugs for lifting purposes.

[0084] In this embodiment, "large megawatt" refers to a capacity greater than 10MW. For ease of explanation, this embodiment uses the aforementioned processing system to assist in the processing of a 14MW direct-drive offshore wind turbine rotor house, specifically including the following steps:

[0085] Step 1: Material Preparation. This involves cutting the sheet metal into the required shapes and sizes. For example, rectangular sheets can be machined to the corresponding dimensions of the required cylinder, and curved sheets can be machined to the corresponding dimensions of the required cone for later use. In this embodiment, since the rotor house of a 14MW direct-drive offshore wind turbine needs to be manufactured, with a cylinder diameter of approximately 9 meters and a height of approximately 2.6 meters, two sheets of corresponding dimensions are selected to make the cylinder, and two sheets of corresponding dimensions are used to make the cone.

[0086] Step 2, Part Prefabrication: The part prefabrication includes: Prefabricating flange 93: Flange 93 is prefabricated using the ring forging method. The hole in the middle of flange 93 is called center hole 935. Flange 93 is machined, especially the center hole 935, to improve the roundness and dimensional accuracy of the center hole 935. At the same time, the outer edge of flange 93 can also be finished to make the center hole 935 coaxial with the outer edge. In addition, the upper and lower surfaces of flange 93 can also be finished to ensure that the parallelism of the surfaces meets the requirements.

[0087] Precast cylinder: The first arc plate 91 is rolled using a vertical plate rolling machine 81, and during the rolling process, the first arc plate 91 is simultaneously constrained to the tensioning module of one of the attitude stabilization devices 11, such as... Figure 5 and Figure 6 As shown, the first arc plate 91 is connected to the first attitude stabilizing device 11 as a whole, and the roundness and size of the first arc plate 91 are ensured by the tensioning module. Through the cooperation of the cylindrical auxiliary tooling and the vertical plate rolling machine 81, the arc plate 91 can be captured by the tensioner 221 in the cylindrical auxiliary tooling at the same time as it is detached from the vertical plate rolling machine 81 during the rolling process. This allows the tensioner 221 to abut and adsorb the arc plate 91 earlier and more timely, preventing the arc plate 91 from deforming inward or outward during the rolling process, and effectively preventing deformation during subsequent transfer and hoisting.

[0088] Specifically, when rolling the first arc plate 91, the relative position of the first base 30 and the vertical plate rolling machine 81 is first determined according to the required inner diameter of the cylinder, and the first attitude stabilizing device 11 is installed on the first base 30, so that the rotation center of the plate during the rolling process in the vertical plate rolling machine 81 is consistent with the rotation center of the tensioning module (or the center of the first main frame 20), such as... Figure 5 and Figure 6 As shown; then adjust the length of each tensioner 221 in the tensioning module according to the required inner diameter of the cylinder, so that the distance between the end of the tensioner 221 and its rotation center is equal to the inner diameter of the cylinder 95, and initially, each tensioner 221 is located at the outlet of the vertical plate rolling machine 81; during the rolling process, after one end of the plate 90 passes through the outlet of the vertical plate rolling machine 81, the outermost tensioner 221 is first placed against the inner surface of the arc plate 91, and the suction component 26 at the end of the tensioner 221 is used to suction the arc plate 91. During the rolling process, the outermost tensioner 221 can rotate synchronously with the arc plate 91, so that the tensioner 221 can be used to drive the remaining tensioners 221 to unfold in sequence and evenly abut and suction against the arc plate 91, as shown. Figure 6As shown. Similarly, a vertical plate rolling machine 81 is used to roll the second arc plate 91, and during the rolling process, the second arc plate 91 is simultaneously constrained to the tensioning module of another attitude stabilizing device 11, that is, the second arc plate 91 is connected to the second attitude stabilizing device 12 as a whole, and the roundness and size of the second arc plate 91 are ensured by the tensioning module. The specific rolling process of the second arc plate 91 is the same as above, and will not be repeated here. Then, the two attitude stabilizing devices 11 are spliced ​​together, specifically, the two first main frames 20 are spliced ​​together, so that the two attitude stabilizing devices 11 can be connected as a whole, so that the two ends of the first arc plate 91 and the second arc plate 91 can be exactly connected to each other and can jointly form a cylindrical structure, as shown. Figure 8 As shown. Finally, welding is performed at the docking position to obtain cylinder 95, and at this time, the central axis of cylinder 95 coincides with the central axis of the cylinder auxiliary tooling (the center of the first main frame 20).

[0089] Precast cone: The first conical plate 92 is rolled using a vertical conical roll rolling machine 82, and during the rolling process, the first conical plate 92 is simultaneously constrained to the constraint module of one of the state holding devices 41, such as... Figure 10 and Figure 12 As shown, the first conical plate 92 is connected to the first state-holding device 41 as a whole, and the taper and size of the first conical plate 92 are ensured by the constraint module. Specifically, when rolling the first conical plate 92, the relative position of the second base 30 and the vertical conical roll rolling machine 82 is first determined according to the inner diameter of the required small end of the cone, and the first state-holding device 41 is installed on the second base 30, so that the rotation center of the plate during the rolling process in the vertical conical roll rolling machine 82 is consistent with the rotation center of the constraint module (or the center of the second main frame 50), such as... Figure 12 As shown; then adjust the length of each constraint 521 in the constraint module and the pitch angle of the adsorption component 26 according to the required cone's taper. Initially, each constraint 521 is located at the exit of the vertical conical roll plate rolling machine 82. During the rolling process, after one end of the plate 90 passes through the exit of the vertical conical roll plate rolling machine 82, the outermost constraint 521 is first placed against the inner surface of the conical plate 92, and the adsorption component 26 at the end of the constraint 521 adsorbs the conical plate 92 along the height direction of the conical plate 92, so that the outermost constraint 521 rotates synchronously with the conical plate 92, and drives the remaining constraints 521 to unfold in sequence, and evenly abut and adsorb onto the conical plate 92, as shown. Figure 12As shown. Similarly, a vertical conical roll forming machine 82 is used to roll the second conical plate 92, and during the rolling process, the second conical plate 92 is simultaneously constrained to the constraint module of another state holding device 41, that is, the second conical plate 92 is connected to the second state holding device 42 as a whole, and the constraint module ensures the taper and size of the second conical plate 92. The specific rolling process of the second conical plate 92 is the same as above, and will not be repeated here.

[0090] Then, the two state-holding devices 41 are spliced ​​together, specifically, the two second main frames 50 are spliced ​​together, so that the two state-holding devices 41 are connected as one unit, thereby making the two ends of the first conical plate 92 and the second conical plate 92 align with each other and together form a conical structure, such as Figure 14 As shown. Finally, welding is performed at the joint to obtain cone 94, as shown. Figure 15 As shown, the central axis of the cone coincides with the central axis of the cone auxiliary tooling (the center of the second main frame 50).

[0091] Step 3, Assembly, which includes: Step 3.1 Centering of flange 93, including placing flange 93 flat on the assembly fixture 70 and adjusting the horizontal position of flange 93 so that the central axis of flange 93 coincides with the central axis of positioning table 72, such as... Figure 18 As shown.

[0092] Step 3.2 Alignment involves installing the assembled conical auxiliary fixture onto the positioning table 72, and aligning the central axis of the conical auxiliary fixture with the central axis of the positioning table 72 using the positioning table 72. Figure 19 As shown, specifically, the cone auxiliary tooling is positioned and constrained to the assembly tooling 70 through the cooperation of the second connector 51 and the positioning table 72. Since the central axis of the cone coincides with the central axis of the cone auxiliary tooling, and the central axis of the cone auxiliary tooling coincides with the central axis of the positioning table 72, the central axis of the cone and the central axis of the positioning table 72 are kept aligned. This, in turn, ensures that the central axis of the cone 94 coincides with the central axis of the flange 93, ensuring a higher precision fit between the cone and the flange 93. At this time, as... Figure 19 As shown, the cone is located above the flange 93, and initially, there is a certain height difference between them to prevent mutual interference. Then, the vertical height of the flange 93 can be adjusted so that the relative position between the outer edge of the flange 93 and the lower end of the cone 94 meets the requirements of the welding process; specifically, the flange 93 can be lifted upwards by the hydraulic cylinder 74 so that the relative position between the outer edge of the flange 93 and the lower end of the cone meets the requirements of the welding process, such as... Figure 20 As shown, this facilitates the achievement of higher quality welding.

[0093] Step 3.3 involves a single welding operation, including welding the flange 93 and the cone 94 together as a single unit, such as... Figure 9 As shown.

[0094] Step 3.4 Secondary alignment includes lifting the conical auxiliary tooling (including flange 93) off the assembly tooling 70 and installing the positioning pin 73 onto the base 71, as follows. Figure 21 As shown, the positioning post 73 and the positioning platform 72 are coaxial through the cooperation of the positioning post 73 and the second central through hole 722. Then, the assembled cylindrical auxiliary fixture is installed on the positioning platform 72. Specifically, the positioning post 73 passes through the cylindrical auxiliary fixture, and the central axis of the cylindrical auxiliary fixture coincides with the central axis of the positioning platform 72 through the cooperation of the first connector 21 and the positioning platform 72. The upper end of the positioning post 73 extends beyond the upper end of the cylindrical auxiliary fixture. Figure 21 As shown, at this time, the lower end of the first connector 21 corresponds to the hydraulic cylinder 74 below, and it can ensure that the central axis of the cylinder 95 coincides with the central axis of the positioning table 72.

[0095] Step 3.5 involves three-stage alignment, including installing the conical auxiliary tooling onto the positioning post 73. The positioning post 73, in conjunction with the central circular channel, ensures that the central axis of the conical auxiliary tooling coincides with the central axis of the positioning post 73. Specifically, the conical auxiliary tooling can be fixed at the upper end of the cone, above the upper end of the cylinder 95. Figure 22 As shown, at this time, the cone 94 is located above the cylinder 95, which can ensure that the central axis of the cone auxiliary tooling coincides with the central axis of the positioning column 73, thereby ensuring that the central axes of the cone 94, flange 93 and cylinder 95 are completely coincident, so as to complete the assembly of the rotor house with high precision and high quality.

[0096] Then, the vertical height of the cylinder can be adjusted so that the relative position between the upper end of the cylinder and the upper end of the cone meets the requirements of the welding process; specifically, the first connector 21 of the cylinder can be lifted upward by the hydraulic cylinder 74 so as to raise the auxiliary tooling of the cylinder as a whole, so that the bevel 911 on the arc plate 91 can be adapted to the cone 94, and the relative position between the upper end of the cylinder 95 and the upper end (large end) of the cone 94 meets the requirements of the welding process, such as Figure 23 As shown, this facilitates the achievement of higher quality welding.

[0097] Step 3.6 Secondary welding, including welding the cone 94 to the cylinder as a single unit, such as 23 and Figure 24 As shown, the rotor chamber of the required size is obtained.

[0098] Step 4: Non-destructive testing to detect structural defects. Since the rotor housing, cylinder auxiliary fixture, and cone auxiliary fixture are all connected as a single unit at this stage, they can be hoisted and transferred as a whole. This allows the rotor housing to undergo subsequent processing, such as non-destructive testing and heat treatment, under the combined constraint of the cylinder and cone auxiliary fixtures. This effectively protects the rotor housing from deformation during transfer and also effectively constrains it, preventing deformation during subsequent transport.

[0099] Step 5: Heat treatment to improve the stress condition and performance of the entire rotor chamber.

[0100] Step 6, secondary non-destructive testing; Step 7, scribing; Step 8, machining; Step 9, painting, etc., in order to obtain a higher quality rotor housing.

[0101] In addition, this processing system also includes a connecting structure, which consists of two connecting plates. The upper end of the connecting plate is adapted to the second main frame 50, and the lower end is adapted to the first main frame 20. Through holes are provided on both sides of the connecting plates. After welding is completed, the first main frame 20 and the second main frame 50 can be clamped simultaneously using the two connecting plates. Then, the two connecting plates can be locked using fasteners 60 that fit the through holes to clamp the first main frame 20 and the second main frame 50, thereby strengthening the connection between the cylindrical auxiliary tooling and the conical auxiliary tooling and facilitating overall hoisting and transfer.

[0102] The rotor housing processed using this auxiliary machining system can effectively control the overall welding deformation within 1mm / 2m, the coaxiality of the cylinder, cone, and flange can be easily controlled within 3mm, the verticality of the cylinder of the 14MW direct-drive offshore wind turbine rotor housing can be effectively controlled within 2mm, and the shape tolerance of the cylinder is controlled within 2.5mm / 5m, thus ensuring the machining accuracy of large rotor housings.

[0103] Example 2

[0104] To address the issue of improving the manufacturing precision of the rotor housing, the main difference between this embodiment 2 and the previous embodiment is that the machining system provided in this embodiment is heavier, and the assembly fixture 70 also includes a positioning surface 711 and a centering mechanism. The centering mechanism includes a drive motor 751 and two positioning rods 755 symmetrically arranged along the center of the positioning table 72, as shown below. Figure 25 and Figure 26 As shown, two positioning rods 755 extend out of positioning surfaces 711, which are used to position and constrain the flange 93, ensuring that the flange 93 is in a horizontal position. A drive motor 751 is connected to the two positioning rods 755 and drives them to move synchronously in opposite directions. For example, the positioning surfaces 711 have symmetrically arranged guide holes 712, which are arranged radially along the positioning platform 72. Figure 25 and Figure 26 As shown, a lead screw 752 is provided inside the base 71. The lead screw 752 has two threaded sections 753 with opposite threads. The lead screw 752 can be connected to the base 71 through a bearing and is connected to the drive motor 751 for transmission. The drive motor 751 can preferably be a motor. Nuts 754 are symmetrically arranged on the two threaded sections 753 respectively. The lower ends of the two positioning rods 755 are respectively connected to the two nuts 754. The upper ends of the positioning rods 755 extend out of the positioning surface 711 through the guide hole 712. The positioning rods 755 can move along the guide hole 712, so that the drive motor 751 can drive the two positioning rods 755 to move synchronously in opposite directions along the guide hole 712.

[0105] In use, flange 93 can be placed flat on the positioning surface 711 of assembly fixture 70, and two positioning rods 755 can be inserted into the center holes 935 of flange 93 respectively. Then, the two positioning rods 755 are driven synchronously by drive motor 751 to move away from each other, and flange 93 is translated by the two positioning rods 755 until the distance between the two positioning rods 755 no longer increases. At this time, the central axis of flange 93 coincides with the central axis of positioning table 72. By aligning flange 93, flange 93 can be used as the positioning reference in subsequent assembly processes. This ensures that flange 93, cone 94 and cylinder 95 can be strictly aligned in subsequent assembly processes. This not only avoids misalignment problems in subsequent assembly processes and facilitates assembly and welding, but also greatly reduces errors and the workload of subsequent processing corrections, thereby effectively improving the manufacturing accuracy of rotor housing.

[0106] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine, characterized in that, This includes auxiliary tooling for the cylinder, auxiliary tooling for the cone, and assembly tooling, among which, The auxiliary tooling for the cylinder is designed to be compatible with a vertical plate rolling machine. The auxiliary tooling for the cylinder includes two attitude stabilizing devices that can be spliced ​​together, and a first base adapted to the two attitude stabilizing devices. The attitude stabilizing devices are equipped with at least one set of tensioning modules along the height direction. The tensioning modules include at least three tensioners that can rotate in linkage along the circumferential direction. Each tensioner is equipped with an adsorption component for adsorbing the arc plate. The cone auxiliary tooling is designed to be compatible with a vertical cone roll plate rolling machine. The cone auxiliary tooling includes two state holding devices that can be spliced ​​together, and a second base that is compatible with the two state holding devices. The state holding devices are equipped with at least one set of constraint modules along the height direction. The constraint modules include at least three constraint devices that can rotate in linkage along the circumferential direction. Each constraint device is equipped with an adsorption component for adsorbing the cone plate. The assembly fixture includes a base for bearing load, a positioning platform that adapts to both cylindrical and conical auxiliary fixtures, and a positioning column that adapts to both cylindrical and conical auxiliary fixtures. The positioning column is detachably mounted on the base and is coaxial with the positioning platform.

2. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 1, characterized in that, The attitude stabilization device further includes a first main frame, a tensioning module disposed on the first main frame, and a tensioner in the tensioning module that can rotate along the circumference of the first main frame; the lower end of the first main frame is provided with a first connector; the state holding device further includes a second main frame, a constraint module disposed on the second main frame, and a constraint device in the constraint module that can rotate along the circumference of the second main frame; the lower end of the second main frame is provided with a second connector; the first base is configured to adapt to the first connector, the second base is configured to adapt to the second connector, and the positioning platform is configured to simultaneously adapt to the first connector and the second connector.

3. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 2, characterized in that, The two first main frames in the cylindrical auxiliary tooling are configured to be detachably connected; and / or, the two second main frames in the conical auxiliary tooling are configured to be detachably connected.

4. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 2, characterized in that, The positioning platform has a cylindrical shape, and its central structure has a first central through hole and a second central through hole, with the diameter of the first central through hole being larger than the diameter of the second central through hole. The outer diameter of the positioning post is adapted to the inner diameter of the second central through hole. The first main frame adopts a semi-cylindrical structure, and the inner diameter of the first main frame is adapted to the outer diameter of the positioning column. When the two first main frames are spliced ​​together, the center of the two first main frames forms a central circular channel, and the two first plugs form a circular slot. The central axis of the central circular channel is coaxial with the central axis of the circular slot. The outer diameter of the positioning table is adapted to the inner diameter of the circular slot. The positioning cylinder auxiliary tooling is positioned by the cooperation between the circular slot and the positioning table. The second main frame adopts a semi-cylindrical structure, and the inner diameter of the second main frame is adapted to the outer diameter of the positioning column. When the two second main frames are spliced ​​together, the centers of the two second main frames form a central circular channel, and the two second plugs form a cylindrical plug. The central axis of the central circular channel is coaxial with the central axis of the cylindrical plug. The outer diameter of the second plug is adapted to the inner diameter of the first central through hole, and the positioning cone auxiliary tooling is positioned by the cooperation between the cylindrical plug and the first central through hole.

5. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 4, characterized in that, The second connector has a locking hole on its side, and the positioning post has multiple positioning holes that are adapted to the locking hole. Each positioning hole is arranged along the height direction of the positioning post. The cone auxiliary tooling is installed at different heights of the positioning post by fasteners that are adapted to the locking hole and the positioning hole.

6. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 2, characterized in that, In a tensioning module, one tensioner is fixed to one end of the first main frame, and the other tensioners are rotatably connected to the first main frame. During rotation, each tensioner always maintains its radial orientation along the first main frame. Two synchronous ropes are connected between adjacent tensioners.

7. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 6, characterized in that, The outer side of the first main frame is provided with a first slide rail, which is an arc-shaped structure and is coaxial with the first main frame; a second slide rail is also provided on the outer side of the first main frame, which is an arc-shaped structure and is coaxial with the first main frame, and is located outside the first slide rail; the tensioner is provided with limiting parts that are respectively adapted to the first slide rail and the second slide rail.

8. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 6, characterized in that, The sides of the tensioner are also equipped with permanent magnets for attracting adjacent tensioners; And / or, the length of each tensioner in the tensioning module is adjustable.

9. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 2, characterized in that, In a constraint module, one constraint is fixed to one end of the second main frame, and the remaining constraint are rotatably connected to the second main frame. During rotation, each constraint always maintains its radial orientation along the second main frame. Two synchronous ropes are connected between adjacent constraint devices.

10. The auxiliary processing system for a rotor house of a large-megawatt direct-drive wind turbine generator according to claim 1, characterized in that, The assembly fixture is also equipped with a lifting mechanism, which includes a hydraulic device and multiple hydraulic cylinders. The base has several hydraulic holes, which are evenly arranged along the circumference of the positioning platform. Each hydraulic cylinder is installed in the hydraulic hole and connected to the hydraulic device. The hydraulic cylinder is used to lift vertically under the drive of the hydraulic device to adjust the distance between the outer edge of the flange and the lower end of the cone or the distance between the upper end of the cylinder and the upper end of the cone.

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