Linear motor long stator hoisting tool and implementation method

Abstract

The invention belongs to the technical field of linear motors, and particularly relates to a linear motor long stator hoisting tool and an implementation method. According to the technical scheme, an upper pressing plate surface and a lower pressing plate surface of a long stator module are respectively provided with at least two groups of hoisting tools; the lifting tool comprises a C-shaped lifting appliance, the C-shaped lifting appliance is connected with a tensioning screw on the pressing plate face of the long stator module through a locking nut, and one end, away from the long stator module, of the C-shaped lifting appliance is connected with a rotary lifting bolt. According to the lifting tool for the long stator of the linear motor and the implementation method, the lifting and turning-over requirements of key procedures such as transferring, line inserting and glue pouring in the manufacturing process of the long stator of the linear motor can be met, and the lifting and turning-over requirements in a pipeline during field installation can also be met.

Description

Technical Field

[0001] This invention belongs to the field of linear motor technology, and specifically relates to a lifting tool and method for a long stator of a linear motor. Background Technology

[0002] Currently, commonly used lifting tools and methods mainly include three types: 1) lifting ropes, 2) lifting ropes + safety hooks, and 3) lifting ropes + lifting beams. When using method 1), the lifting rope is used to hold the object being lifted. This method is mostly used for small, regularly shaped objects, and the rope will not damage the object after being clamped. When using method 2), lifting lugs are needed at both ends of the object being lifted, and the possibility of the rope damaging the object after being clamped must also be considered. Lifting method 3 is mostly used for lifting and transporting slender objects, requiring a larger operating space.

[0003] The existing hoisting solutions cannot meet the hoisting requirements of long stators of linear motors under low vacuum and ultra-high speed conditions, nor can they meet the requirements of frequent turning during the manufacturing process in the factory. Summary of the Invention

[0004] In order to solve the above-mentioned problems in the prior art, the purpose of this invention is to provide a lifting tool and method for a long stator of a linear motor, which can ensure the lifting and turning requirements of key processes such as transfer, wire embedding and glue filling in the manufacturing process of the long stator of the linear motor, and can also ensure the lifting and turning requirements in the pipeline during on-site installation.

[0005] The technical solution adopted in this invention is as follows: A lifting tool for a long stator of a linear motor is provided, wherein at least two sets of lifting tools are provided on the upper and lower pressure plates of the long stator module; the lifting tools include a C-shaped lifting tool, which is connected to a tensioning screw on the pressure plate of the long stator module through a locking nut, and a rotating eye bolt is connected to the end of the C-shaped lifting tool away from the long stator module.

[0006] During installation, the C-shaped lifting tool is inserted from the back of the long stator to the position of the tensioning screw. The C-shaped lifting tool is then pressed and fixed to the end face of the long stator using locking nuts. Each C-shaped lifting tool is secured with two sets of locking nuts. After the four sets of lifting tools are in place on the upper and lower pressure plates of the long stator, a rotating eye bolt is installed at the screw hole on the top of each lifting tool. Simultaneous lifting from the four lifting points enables the transfer and turning of the long stator. This invention ensures the lifting and turning requirements for key processes such as transfer, winding, and gluing during the manufacturing of linear motor long stators, and also ensures the lifting and turning requirements within pipelines during on-site installation.

[0007] As a preferred embodiment of the present invention, the C-shaped lifting device includes a base plate, a back plate and a top plate arranged in sequence, a locking nut is pressed on the base plate and a rotating eye bolt is connected to the top plate.

[0008] In a preferred embodiment of the present invention, the base plate is provided with a plurality of screw holes, the screw holes being U-shaped; a C-shaped lifting device is inserted from the back of the long stator module, and the tensioning screw enters the screw hole. The inner diameter of the screw hole is approximately 2 mm larger than the outer diameter of the washer at the tensioning screw on the long stator module. Considering that the C-shaped lifting device can only be inserted for installation and removal from the back of the long stator, the screw holes on the base plate are machined into open U-shaped holes.

[0009] In a preferred embodiment of the present invention, a countersunk hole is provided within the U-shaped hole, located on the side of the base plate away from the long stator module. After the locking nut is threadedly connected to the tensioning screw, the locking nut is pressed against the stepped surface of the countersunk hole. To ensure reliable locking of the locking nut, the bottom surface of the locking nut is in large-area contact with the base plate. A 7mm deep countersunk hole is machined on the side of the base plate away from the lower surface of the base plate, and the locking nut is pressed against the stepped surface of the countersunk hole.

[0010] As a preferred embodiment of the present invention, the locking nut includes a locking bolt head and a pressure-bearing base. The locking bolt head is threadedly connected to the tensioning screw, and the bottom surface of the pressure-bearing base is pressed against the stepped surface of the countersunk hole.

[0011] As a preferred embodiment of the present invention, the lower part of the pressure-bearing base is provided with a clearance cavity for avoiding the tensioning screw nut and the nut anti-loosening weld foot on the long stator module.

[0012] The locking nut is machined from a single piece of round steel. It consists of two parts: a locking bolt head and a pressure-bearing base. The locking bolt head is hexagonal, 16mm high, with an M16 threaded hole machined in the center. The pressure-bearing base has an outer diameter of 44mm and a height of 8mm, with a 30mm diameter 90° spherical clearance cavity machined in the center to ensure that the locking nut avoids the tensioning screw nut 51 on the long stator module and the nut anti-loosening weld foot when tightened.

[0013] In a preferred embodiment of the present invention, both sides of the back plate gradually taper from bottom to top. The back plate is located between the bottom plate and the top plate, serving a connecting function. The back plate is machined into an isosceles trapezoid, gradually tapering upwards from the bottom plate. The width of the bottom of the back plate should be smaller than the spacing between the two screw holes on the bottom plate to ensure sufficient operating space during assembly and disassembly.

[0014] As a preferred embodiment of the present invention, the joints between the back plate and the bottom plate, and between the back plate and the top plate, are all rounded. This rounding treatment is to mitigate stress concentration during lifting and turning.

[0015] In a preferred embodiment of the present invention, the top plate is provided with two screw holes, the line connecting the two screw holes being perpendicular to the long stator module. The two screw holes are located on both sides of the center line of the long stator module, and the rotating eye screw is threadedly connected to one of the screw holes. The top plate of the C-shaped lifting device is approximately 70mm wider than the bottom plate. Two sets of M24 screw holes are machined on the top plate, with the two sets of holes distributed on the left and right sides of the center line of gravity of the long stator module, facilitating the adjustment of the lifting point position according to the center of gravity position during lifting. Simultaneously, to ensure reliable tightening of the eye screw, the screw hole on the side of the top surface where the rotating eye screw is installed is countersunk.

[0016] A method for hoisting a long stator of a linear motor includes the following steps: S1: First Lifting and Turning: After the long stator module is pressed on the pressurization platform, two sets of lifting tools are installed on the upper and lower pressure plates of the long stator module. The four lifting points on the long stator module are lifted simultaneously. After the long stator module is lifted off the pressurization platform, the height of one side hook is slowly lowered to achieve a 90° rotation of the module. The load-bearing hook is slowly lowered until the two sets of lifting tools on the lower side contact the ground. Finally, the hook height is gradually lowered until the long stator module is completely on the ground, achieving a 180° rotation. The lifting tools are then removed. S2: Second lifting: Install two sets of lifting tools on the upper and lower pressure plates of the long stator module. After the wire is embedded, the lifting tools can only be inserted from the back of the long stator. Then, lift several long stator modules into the VPI tank one by one. Adjacent long stator modules are separated by partitions. S3: Third lifting: The long stator modules are dipped and dried. After the dipping and drying is completed, the long stator modules are lifted off the dipping and drying rack one by one. S4: Fourth lifting and turning: The four lifting points on the long stator module are lifted at the same time, and the height of one side hook is slowly lowered to achieve a 90° rotation of the module. The insulation box is then filled with glue at the winding joint at the lower end of the long stator module. S5: Fifth lifting and turning: After the lower insulation box has been filled with glue and cured, the long stator is moved away from the glue filling platform. After the long stator lands smoothly, the side hook of the insulation box is slowly pulled up to achieve a 180° rotation of the module. The insulation box is filled with glue at the lower winding joint of the long stator module. S6: Sixth lifting and turning: After the lower insulation box has been filled with glue and cured, the long stator module is moved away from the glue filling platform and slowly placed flat on the ground; S7: Seventh lifting and turning: At the installation site, four sets of lifting points on the long stator module are lifted simultaneously, and the height of one side hook is slowly lowered to achieve a 90° rotation of the module, allowing the long stator module to be installed.

[0017] The beneficial effects of this invention are as follows: 1. The hoisting scheme of the present invention allows for simultaneous lifting of four sets of lifting points during horizontal lifting. When vertical lifting is required, the two lifting points on the same side of the long stator are slowly pulled up by rotating the lifting eye screws. The two lifting points on the other side are used for turning support, which can effectively prevent the lower winding from touching the ground and being damaged during turning. After the 90° turning is completed, the lifting points can be aligned with the center of gravity of the long stator during vertical lifting.

[0018] 2. In this invention, there is no need for a lifting beam. The space required during the lifting process is only the space of the long stator plus the hoisting space. The space requirement is small, and it is more adaptable to limited spaces.

[0019] 3. The linear motor's long stator is shaped like a flat pole, with relatively weak stiffness along its length. During lifting and turning, core deformation must be strictly controlled to reduce the risk of insulation damage. To ensure minimal lifting deformation, multiple lifting points must be set along the core's length. Furthermore, during lifting, it is crucial to prevent the lifting ropes from damaging the windings and to prevent the lower windings from contacting the ground and causing damage during turning. The multiple lifting setup in this invention meets the minimum insulation risk requirement.

[0020] 4. The hoisting tool of the present invention is easy to assemble and disassemble, and the tooling manufacturing cost is low. Multiple sets of tooling can be manufactured at the same time during hoisting preparation. During hoisting, the installation of the hoisting tool, the hoisting of the module, and the disassembly of the hoisting tool can be carried out in parallel, thereby improving hoisting efficiency. Attached Figure Description

[0021] Figure 1 This is a front view of the present invention after assembly with the long stator module; Figure 2 This is a bottom view of the present invention assembled with the long stator module; Figure 3 This is a left view of the present invention after assembly with the long stator module; Figure 4 This is a structural schematic diagram of the long stator module of a linear motor; Figure 5 This is a schematic diagram of the linear motor installation space; Figure 6 This is a structural diagram of a C-shaped lifting device; Figure 7 This is a schematic diagram of the lock nut structure; Figure 8 This is a cross-sectional view of the lock nut; Figure 9 This is a partial structural diagram of the C-shaped lifting device and the long stator module; Figure 10 This is a schematic diagram of the structure when the rotating eye screw is in a straight line; Figure 11 This is a schematic diagram of the structure when the rotating eye bolt is at 90°. Figure 12 This is a diagram illustrating the first lifting and turning maneuver. Figure 13 This is a schematic diagram of the second hoisting operation; Figure 14 This is a diagram illustrating the fourth lifting and turning maneuver. Figure 15 This is a diagram illustrating the fifth lifting and turning maneuver.

[0022] In the diagram: 1-C-shaped lifting tool; 2-locking nut; 3-rotating eye bolt; 4-long stator module; 5-tensioning screw; 11-base plate; 12-back plate; 13-top plate; 21-locking bolt head; 22-pressure bearing base; 51-tensioning screw nut; 111-screw hole; 112-countersunk hole; 131-screw hole; 221-avoidance cavity. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0024] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the invention can be combined with each other.

[0025] like Figures 1-5 As shown, in this embodiment, the linear motor long stator hoisting tool has two sets of hoisting tools on each of the upper and lower pressure plates of the long stator module 4. The upper hoisting tool and the lower hoisting tool are aligned in the longitudinal direction. The hoisting tool includes a C-shaped lifting tool 1, which is connected to the tensioning screw 5 on the pressure plate of the long stator module 4 through a locking nut 2. The end of the C-shaped lifting tool 1 away from the long stator module 4 is connected to a rotating eye bolt 3.

[0026] During installation, the C-shaped lifting tool 1 is inserted from the back of the long stator to the position of the tensioning screw 5. The C-shaped lifting tool 1 is then pressed and fixed to the end face of the long stator by the locking nut 2. Each C-shaped lifting tool 1 is locked by two sets of locking nuts 2. After the four sets of lifting tools are in place at the upper and lower pressure plates of the long stator, a rotating eye bolt 3 is installed at the screw hole 131 on the top of each lifting tool. The long stator is transferred and turned over by lifting simultaneously from the four lifting points. This invention can ensure the lifting and turning requirements of key processes such as transfer, winding, and glue filling in the manufacturing process of the linear motor long stator, and can also ensure the lifting and turning requirements in pipelines during on-site installation.

[0027] Specifically, such as Figure 6 As shown, the C-shaped lifting device 1 includes a base plate 11, a back plate 12, and a top plate 13 arranged in sequence. The locking nut 2 is pressed onto the base plate 11, and the rotating eye screw 3 is connected to the top plate 13.

[0028] The base plate 11 has two U-shaped screw holes 111. A C-shaped lifting device 1 is inserted from the back of the long stator module 4, and a tensioning screw 5 is inserted into the screw hole 111. The inner diameter of the screw hole 111 is approximately 2 mm larger than the outer diameter of the washer at the tensioning screw 5 on the long stator module 4. Considering that the C-shaped lifting device 1 can only be inserted for installation and removal from the back of the long stator, the screw holes 111 on the base plate 11 are machined as open U-shaped holes.

[0029] A countersunk hole 112 is provided within the U-shaped hole, located on the side of the base plate 11 away from the long stator module 4. After the locking nut 2 is threadedly connected to the tensioning screw 5, the locking nut 2 is pressed against the stepped surface of the countersunk hole 112. To ensure reliable locking of the locking nut 2, the bottom surface of the locking nut 2 is in large-area contact with the base plate 11. A 7mm deep countersunk hole 112 is machined on the side of the base plate 11 away from the lower surface of the base plate 11, and the locking nut 2 is pressed against the stepped surface of the countersunk hole 112.

[0030] Specifically, such as Figures 7-9 As shown, the locking nut 2 includes a locking bolt head 21 and a pressure base 22. The locking bolt head 21 is threadedly connected to the tensioning screw 5, and the bottom surface of the pressure base 22 is pressed against the stepped surface of the countersunk hole 112.

[0031] The lower part of the pressure-bearing base 22 is provided with a clearance cavity 221 for avoiding the tension screw 5 nut and the nut anti-loosening weld foot on the long stator module 4.

[0032] The locking nut 2 is integrally machined from round steel. The locking nut 2 consists of two parts: a locking bolt head 21 and a pressure-bearing base 22. The locking bolt head 21 is hexagonal in shape, 16mm high, with an M16 screw hole 131 machined in the center. The pressure-bearing base 22 has an outer diameter of 44mm and a height of 8mm, with a 90° spherical clearance cavity 221 with a diameter of 30mm machined in the center to ensure that the locking nut 2 avoids the nut of the tensioning screw 5 on the long stator module 4 and the nut anti-loosening weld foot when tightened.

[0033] Specifically, such as Figure 9 As shown, both sides of the back plate 12 gradually taper from bottom to top. The back plate 12 is located between the bottom plate 11 and the top plate 13, serving as a connector. The back plate 12 is machined into an isosceles trapezoid, gradually tapering upwards from the bottom plate 11. The bottom width of the back plate 12 should be smaller than the spacing between the two screw holes 111 on the bottom plate 11 to ensure sufficient operating space during assembly and disassembly.

[0034] The connections between the back plate 12 and the bottom plate 11, and between the back plate 12 and the top plate 13, are all rounded. This rounding treatment is to mitigate stress concentration during lifting and turning.

[0035] Specifically, such as Figure 6 , Figure 10 and Figure 11 As shown, the top plate 13 is provided with two screw holes 131. The line connecting the two screw holes 131 is perpendicular to the long stator module 4. The two screw holes 131 are located on both sides of the center line of the long stator module 4. The rotating eye screw 3 is threadedly connected to one of the screw holes 131. The top plate 13 of the C-shaped lifting device 1 is about 70mm wider than the bottom plate 11. Two sets of M24 screw holes 131 are machined on the top plate 13. The two sets of holes are distributed on the left and right sides of the center line of gravity of the long stator module 4, which facilitates the adjustment of the lifting point position according to the center of gravity position during lifting. At the same time, in order to ensure that the eye screw is reliably tightened, the screw hole 131 on the side of the top surface of the top plate 13 where the rotating eye screw 3 is installed is countersunk.

[0036] The rotating eye bolt 3 for connecting the lifting rope is made of alloy steel as a whole and is a standard part. It can be rotated within 180° to bear force according to the usage.

[0037] The method for hoisting the long stator of a linear motor in this embodiment includes the following steps: S1: As Figure 12As shown, the first lifting and turning: After the long stator module 4 is pressed on the pressing platform, two sets of lifting tools are installed on the upper and lower pressure plates of the long stator module 4. The four lifting points on the long stator module 4 are lifted simultaneously. After the long stator module 4 is lifted off the pressing platform, the height of one side hook is slowly lowered to achieve a 90° rotation of the module. The load-bearing hook is slowly lowered until the two sets of lifting tools on the lower side contact the ground. Finally, the height of the hook is gradually lowered until the long stator module 4 is completely on the ground, achieving a 180° rotation. The lifting tools are then removed. S2: As Figure 13 As shown, the second lifting: two sets of lifting tools are installed on the upper and lower pressure plates of the long stator module 4. After the wire is embedded, the lifting tools can only be inserted from the back of the long stator. Then, several long stator modules 4 are lifted into the VPI tank one by one. Adjacent long stator modules 4 are separated by partitions. S3: Third lifting: The long stator module 4 is immersed in the drying oven. After immersion drying, the long stator modules 4 are lifted off the drying rack one by one. This sequence is basically as follows: Figure 13 The reverse process; S4: As Figure 14 As shown, the fourth lifting and turning: the four sets of lifting points on the long stator module 4 are lifted at the same time, the height of one side hook is slowly lowered, the module is turned 90°, and the insulation box is filled with glue at the winding joint of the lower end of the long stator module 4. S5: As Figure 15 As shown, the fifth lifting and turning: After the lower insulation box is filled with glue and cured, the long stator is moved away from the glue filling platform. After the long stator lands smoothly, the side hook of the insulation box is slowly pulled up to achieve a 180° rotation of the module. The insulation box is filled with glue at the lower winding joint of the long stator module 4. S6: Sixth lifting and turning: After the lower insulation box has been filled with glue and cured, move the long stator module 4 away from the glue filling platform and slowly place it flat on the ground; S7: Seventh Lifting and Turning: At the installation site, the four lifting points on the long stator module 4 are simultaneously lifted, and the height of one side hook is slowly lowered to achieve a 90° rotation of the module, allowing the long stator module 4 to be installed; this sequence is the same. Figure 14 As shown.

[0038] Compared with the original technical solution, the present invention has at least the following advantages: 1) Integrated lifting and turning functions: The original lifting schemes, namely rope hoisting and beam hoisting, only offer horizontal and vertical lifting capabilities. Furthermore, rope hoisting is unsuitable for lifting long stators due to the lack of space for ropes. The rope + safety hook method requires multiple lifting lugs on the long stator, but since most of the space at the top and bottom of the long stator module 4 is obscured by the stator windings, this method is also unsuitable. The lifting scheme of this invention allows for horizontal hoisting by simultaneously lifting all four lifting points. For vertical hoisting, rotating the eye bolt 3 slowly raises two lifting points on the same side of the long stator module 4, while the other two lifting points provide support for turning, effectively preventing damage to the lower windings during turning. After a 90° turn, vertical hoisting ensures that the lifting points coincide with the center of gravity of the long stator module 4.

[0039] 2) Small operating space requirement: The long stator of the ultra-high-speed maglev linear motor is installed inside a pipeline, where space is limited. The original hoisting scheme required a large lifting beam, with the space requirement being the sum of the lifting beam's dimensions, the long stator's dimensions, and the transport space. In this invention, there is no need for a lifting beam; the space required during hoisting is only the long stator's dimensions plus the transport space, resulting in a smaller space requirement and better adaptability within limited spaces.

[0040] 3) Low insulation risk: The linear motor's long stator is shaped like a flat pole, exhibiting relatively weak stiffness along its length. During lifting and turning, core deformation must be strictly controlled to reduce the risk of insulation damage. To ensure minimal lifting deformation, this invention requires multiple lifting points along the core's length. Furthermore, during lifting, it is crucial to prevent the lifting ropes from damaging the windings and to prevent the lower windings from contacting the ground and causing damage during turning. The multiple lifting points in this invention meet the minimum insulation risk requirements.

[0041] 4) Low lifting equipment cost and high lifting efficiency: A maglev line can be several kilometers or even tens of kilometers long, requiring tens of thousands of long stator modules, making the hoisting of these long stators a huge undertaking. The hoisting tool of this invention is easy to assemble and disassemble, and has low manufacturing costs. Multiple sets of tooling can be manufactured simultaneously during hoisting preparation, allowing for parallel operations of hoisting tool installation, module hoisting, and hoisting tool disassembly during hoisting, thus improving hoisting efficiency.

[0042] This invention is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that falls within the scope of the claims of this invention shall be protected by this invention.

Claims

1. A lifting tool for a long stator of a linear motor, characterized in that: At least two sets of lifting tools are provided on the upper and lower pressure plates of the long stator module (4); the lifting tools include C-shaped lifting tools (1), which are connected to the tensioning screw (5) on the pressure plate of the long stator module (4) through locking nuts (2), and the end of the C-shaped lifting tool (1) away from the long stator module (4) is connected to a rotating eye bolt (3).

2. The linear motor long stator hoisting tool according to claim 1, characterized in that: The C-shaped lifting device (1) includes a base plate (11), a back plate (12) and a top plate (13) arranged in sequence. A locking nut (2) is pressed onto the base plate (11), and a rotating eye bolt (3) is connected to the top plate (13).

3. The linear motor long stator hoisting tool according to claim 1, characterized in that: The base plate (11) is provided with several screw holes (111), and the screw holes (111) are U-shaped. The C-shaped lifting device (1) is inserted from the back of the long stator module (4) and the tightening screw (5) is inserted into the screw hole (111).

4. The linear motor long stator hoisting tool according to claim 3, characterized in that: The U-shaped hole is provided with a countersunk hole (112), which is located on the side of the base plate (11) away from the long stator module (4). After the locking nut (2) is threadedly connected to the tensioning screw (5), the locking nut (2) is pressed against the stepped surface of the countersunk hole (112).

5. A linear motor long stator hoisting tool according to claim 4, characterized in that: The locking nut (2) includes a locking bolt head (21) and a pressure base (22). The locking bolt head (21) is threadedly connected to the tensioning screw (5), and the bottom surface of the pressure base (22) is pressed against the stepped surface of the countersunk hole (112).

6. A linear motor long stator hoisting tool according to claim 5, characterized in that: The lower part of the pressure-bearing base (22) is provided with a clearance cavity (221) for avoiding the tension screw (5) nut and the nut anti-loosening weld foot on the long stator module (4).

7. A linear motor long stator hoisting tool according to claim 3, characterized in that: Both sides of the back plate (12) gradually taper from bottom to top.

8. A linear motor long stator hoisting tool according to claim 7, characterized in that: The connection between the back plate (12) and the bottom plate (11), and the connection between the back plate (12) and the top plate (13) are all rounded.

9. A linear motor long stator hoisting tool according to claim 3, characterized in that: The top plate (13) is provided with two screw holes (131). The line connecting the two screw holes (131) is perpendicular to the long stator module (4). The two screw holes (131) are located on both sides of the center line of the long stator module (4). The rotating eye screw (3) is threadedly connected to one of the screw holes (131).

10. A method for hoisting a long stator of a linear motor, using a long stator hoisting tool for a linear motor as described in any one of claims 1 to 9, characterized in that: Includes the following steps: S1: First lifting and turning: After the long stator module (4) is pressed on the pressurization platform, two sets of lifting tools are installed on the upper and lower pressure plates of the long stator module (4). The four lifting points on the long stator module (4) are lifted at the same time. After the long stator module (4) is lifted off the pressurization platform, the height of the hook on one side is slowly lowered to achieve a 90° rotation of the module. The load-bearing hook is slowly lowered until the two sets of lifting tools on the lower side contact the ground. Finally, the height of the hook is gradually lowered until the long stator module (4) is completely landed, achieving a 180° rotation. The lifting tools are then removed. S2: Second lifting: Install two sets of lifting tools on the upper and lower pressure plates of the long stator module (4). After the wire is embedded, the lifting tools can only be inserted from the back of the long stator. Then, lift several long stator modules (4) into the VPI tank one by one. Adjacent long stator modules (4) are separated by partitions. S3: Third lifting: The long stator module (4) is dipped and dried. After the dipping and drying is completed, the long stator module (4) is lifted off the dipping and drying rack one by one. S4: Fourth lifting and turning: The four sets of lifting points on the long stator module (4) are lifted at the same time, and the height of the hook on one side is slowly lowered to achieve a 90° rotation of the module. The insulation box is filled with glue at the winding joint of the lower end of the long stator module (4). S5: Fifth lifting and turning: After the lower end insulation box is filled with glue and cured, the long stator is moved away from the glue filling platform. After the long stator lands smoothly, the side hook of the insulation box is slowly pulled up to achieve a 180° rotation of the module. The insulation box is filled with glue at the lower end winding of the long stator module (4). S6: Sixth lifting and turning: After the lower insulation box has been filled with glue and cured, move the long stator module (4) away from the glue filling platform and slowly place it flat on the ground; S7: Seventh lifting and turning: At the installation site, the four sets of lifting points on the long stator module (4) are lifted at the same time, and the height of the hook on one side is slowly lowered to achieve a 90° rotation of the module and install the long stator module (4).

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