Protective device for processing stator core with winding and mounting and dismounting method

Abstract

The invention belongs to the field of motor protection, and discloses a stator core processing protection device with a winding, which comprises a protection main body embedded in an end cover, the protection main body is of a spliced structure, an accommodating cavity is formed in the center of the protection main body, and a sealing cover plate is mounted in the accommodating cavity; a sealing drainage structure is arranged at the bottom of the protection body and comprises an adapter and a drainage tube, one end of the adapter is connected with the bottom of the containing cavity, and the other end of the adapter is connected with the drainage tube; and the drainage pipe extends between the end cover and the bearing chamber at the lower end so as to guide the cooling liquid out of the product. Through the structural design of the protection body, the magnetic attraction installation accessory, the sealing drainage structure and the like, scrap iron, grinding dust and cooling liquid can be effectively prevented from entering the winding in the stator iron core machining process, and the machining quality and later operation safety are ensured. Meanwhile, the device has the advantages of being convenient to mount and dismount, and the tool utilization rate and the production efficiency can be remarkably improved.

Description

Protective devices for machining winding stator cores and their installation and disassembly methods Technical Field

[0001] This invention relates to a protective device for the processing of a stator core with windings and a method for its installation and disassembly, belonging to the field of motor protection. Background Technology

[0002] During the production of some motors, the stator core requires turning and grinding after assembly and winding. If not properly protected, metal shavings can enter the stator windings, posing a safety hazard during later operation. Existing motors primarily use one end face for metal shaving protection, as shown in Figure 1. However, this method has the following problems: For this type of motor, the stator core with windings requires machining the bearing housings and reference surfaces at both ends as a whole after installing the end covers. Due to space constraints, the protective fixture must be installed on the inside, making installation extremely inconvenient.

[0003] If the protection and drainage of grinding dust and coolant are not properly managed, iron powder and coolant may enter the iron core winding during machining, posing a risk of damage to the coil insulation. After machining, there are issues related to cleaning iron powder and shavings, as well as the easy disassembly and removal of tooling.

[0004] The drawbacks of existing protective devices for stator core machining with windings are as follows: because the protective fixture is larger than the bearing housing at both ends, it must be inserted before the end covers are installed and then bolted to the inner side of the end covers. Furthermore, the protective fixture needs to accompany the product through final assembly and disassembly, resulting in low utilization of the fixture.

[0005] To address the aforementioned issues with iron filings protection, a set of iron filings protection devices that can be easily disassembled and installed has been specifically designed and developed. Summary of the Invention

[0006] This invention addresses the shortcomings of existing technologies by proposing a protective device for stator core machining with windings. This device aims to solve problems such as inconvenient installation of protective fixtures, poor protection and current diversion effects, and difficulties in cleaning and disassembly in existing technologies. The protective device for stator core machining of this invention, through its structural design including a protective main body, magnetic mounting accessories, and a sealed current diversion structure, effectively prevents iron filings, grinding dust, and coolant from entering the windings during stator core machining, ensuring machining quality and subsequent operational safety. Furthermore, the device is easy to install and disassemble, significantly improving fixture utilization and production efficiency.

[0007] The technical means adopted by the present invention to solve the above problems is as follows: a protective device for processing a stator core with windings is disclosed, including a protective body embedded in an end cover. The protective body has a spliced ​​structure, and a receiving cavity is provided in the center of the protective body. A sealing cover plate is installed in the receiving cavity. A sealing drainage structure is provided at the bottom of the protective body. The sealing drainage structure includes an adapter and a drainage pipe. One end of the adapter is connected to the bottom of the receiving cavity, and the other end is connected to the drainage pipe. The drainage pipe extends between the bearing chamber of the lower end cover to drain the coolant out of the product.

[0008] The stator core processing protection device of this invention adopts a spliced ​​structure design for the main body, which allows for flexible adjustment of the splicing method to adapt to actual needs when dealing with stator cores of different specifications and sizes. It also features convenient assembly and disassembly, high turnover rate, and enhanced versatility and applicability. The sealing cover plate fits tightly with the receiving cavity, effectively preventing iron filings, grinding dust, and coolant from entering the winding from above. Furthermore, the adapter in the sealed drainage structure is tightly connected to the bottom of the receiving cavity and the drainage pipe, ensuring that coolant can smoothly exit the product through the drainage pipe, preventing coolant accumulation inside the product and damage to the winding.

[0009] Furthermore, the protective body is assembled from multiple segments, with a central receiving hole to secure the end of the adapter, thus fixing the sealing cover to the protective body. This multi-segment assembly design not only facilitates flexible combination with stator cores of different sizes but also greatly simplifies installation and disassembly, improving work efficiency. During assembly, the segments are connected by precise snap-fits or bolts, ensuring the overall structural stability and sealing. The receiving hole precisely positions the adapter, allowing the sealing cover to fit snugly against the protective body, forming a complete protective barrier.

[0010] Furthermore, a second sealing ring is axially arranged on the side of the sealing cover plate that abuts against the protective body, and a first sealing ring is radially arranged on the side of the adapter that abuts against the sealing cover plate. The arrangement of the first and second sealing rings achieves both radial and axial sealing, further enhancing the sealing performance of the device. The second sealing ring effectively prevents iron filings, grinding dust, and coolant from entering the winding through the gap between the sealing cover plate and the protective body, providing reliable protection for the winding. The first sealing ring ensures the seal between the adapter and the sealing cover plate, preventing coolant leakage at the connection point and ensuring that the coolant can be smoothly discharged through the drain pipe, avoiding potential damage to the winding due to coolant leakage. This dual-sealing design greatly improves the protective effect of the device, providing a more reliable guarantee for the stator core processing.

[0011] Furthermore, the adapter includes a mounting surface with a sealing groove, and its end is threaded to a sealing cover plate; the lower end of the adapter is provided with a positioning buckle. The sealing groove on the mounting surface of the adapter allows for a tight fit with the sealing ring, further enhancing the sealing effect and preventing coolant leakage. The threaded connection to the sealing cover plate is not only stable and reliable but also facilitates disassembly and installation, improving operational convenience. The positioning buckle at the lower end of the adapter allows for quick and accurate positioning during installation, ensuring accurate connection between the adapter and the bottom of the receiving cavity and the drainage pipe, enhancing the overall structural stability. The positioning buckle design also prevents the adapter from loosening or falling off under external forces, ensuring the long-term stable operation of the sealed drainage structure.

[0012] Furthermore, the inner diameter of the receiving cavity of the protective body is designed with a variable diameter, divided into a first neck section, a second neck section, and a third neck section. The inner diameter D1 of the first neck section is smaller than the D2 of the second neck section, and the inner diameter D1 of the first neck section is larger than the D3 of the third neck section. This variable diameter inner diameter design has multiple advantages. The relatively small inner diameter of the first neck section can play a preliminary positioning and guiding role during installation, allowing the protective body to be more accurately embedded in the designated position within the end cover, reducing deviations and shaking during installation. The larger inner diameter of the second neck section provides more space for other components inside the receiving cavity, such as sealing covers and adapters, facilitating the installation and debugging of these components, and also making it convenient for inspection and maintenance when needed. The inner diameter of the third neck section decreases again, adapting to the relevant structure of the stator core, allowing for better fit to the stator core, enhancing the stability and sealing of the overall structure, and further preventing iron filings, grinding dust, and coolant from entering the windings. This variable-diameter inner hole design fully considers the various needs of the device during installation, use and maintenance. Through the reasonable combination of different neck section sizes, the performance of the device is optimized and improved, providing a more reliable guarantee for the protection work during the processing of the winding stator core.

[0013] Furthermore, the height of the third neck segment (D3 dimension) is greater than the thickness of the sealing cover; the third neck segment extends inward with a supporting base plate, the center of which forms a receiving hole for accommodating the adapter. This design, where the height of the third neck segment (D3 dimension) is greater than the thickness of the sealing cover, provides ample operating space for the installation and removal of the sealing cover. During installation, workers can more easily place the sealing cover in the appropriate position and secure it tightly to the protective body using appropriate fixing methods; during disassembly, it is also convenient to use tools to remove the sealing cover for cleaning or replacement.

[0014] The bearing base plate extending inward from the third neck section not only enhances the strength and stability of this part of the protective body, enabling it to better withstand various forces encountered by the device during processing, but also, the receiving hole formed at its center to accommodate the adapter further precisely positions the adapter, ensuring that the adapter will not shift during device operation. This guarantees the normal operation of the sealing and drainage structure, allowing the coolant to be continuously and stably discharged from the product through the drainage pipe, effectively avoiding problems such as coolant leakage caused by changes in the adapter's position, and providing more reliable support for the protective work during the stator core processing.

[0015] Furthermore, an avoidance notch is provided on the outer side of the end of the protective body, and the size of the avoidance notch is adapted to the space measured by the micrometer.

[0016] Furthermore, the supporting base plate of the protective body is equipped with a magnetic mounting bracket, utilizing strong magnetic attraction to enhance the clamping and installation of the protective body. The magnetic mounting bracket includes a strong magnetic attraction and a magnetizable auxiliary component. The magnetic mounting bracket on the protective body connects to it magnetically, eliminating the need for bolts and greatly simplifying the installation process. Simultaneously, the contact surface between the protective body and the end cap is designed with a sealing and drainage structure. This structure effectively prevents iron filings, grinding dust, and coolant from entering the winding interior, and smoothly guides the coolant to the outside of the product through an adapter and drainage pipe, ensuring a clean processing environment and processing quality. In addition, the modular design of the protective body allows for easy disassembly after processing, facilitating the cleaning of residual iron powder and filings, while also increasing the reusability of tooling and reducing production costs.

[0017] Another objective of this invention is to disclose an installation method for the aforementioned protective device for processing a stator core with windings, characterized by the following steps: S1. The protective body is processed using a HALF method, cut from the interface into symmetrical even-numbered halves; S2. The divided portion A of the protective body is placed obliquely onto the surface of the bearing chamber of the lower end cover of the workpiece; then the remaining divided portion B of the protective body is placed obliquely onto the surface of the bearing chamber of the lower end cover of the workpiece; S3. The portion A of the protective body is lifted using a magnetic mounting accessory and connected to the end cover using bolts; then the remaining portion B of the protective body is lifted and placed close to the mounting position; S4. S5. Connect the remaining part B to the already installed part A, ensuring a tight and seamless connection to complete the initial installation of the protective body; S6. Install the adapter in the receiving hole of the protective body and fix it with a threaded connection, while ensuring that the sealing ring one is installed on the side of the adapter that abuts against the sealing cover plate; S7. Cover the protective body with the sealing cover plate, so that the sealing ring two abuts against the protective body to ensure a sealing effect, and fix the sealing cover plate to the protective body as a whole with bolts or other fixing methods; S8. Connect the drain pipe to the other end of the adapter, ensuring that the drain pipe extends to the bottom of the stator core to drain the coolant out of the product, and check whether the drain pipe connection is secure.

[0018] The HULF segmented installation method solves the problem of protective installation in semi-enclosed or enclosed spaces. It cleverly utilizes HALF processing technology to divide the protective body into symmetrical even-numbered halves, preferably two halves, thus enabling flexible installation operations even in space-constrained environments. In step S2, the segmented portion A is tilted and placed onto the lower end cap bearing housing surface of the workpiece. This design not only adapts to narrow installation spaces but also, through the strong magnetic attraction of the magnetic installation accessories and the magnetizable accessories, precisely pulls portion A towards the back of the upper bearing housing, achieving initial positioning.

[0019] In step S3, aligning the bolt mounting holes ensures that the HALF block of the protective body can be accurately installed in the predetermined position. Through the further action of the magnetic mounting accessories, the remaining part B of the HALF block is lifted and brought closer to the mounting position, preparing for subsequent splicing work.

[0020] The installation method of the protective device for processing the winding stator core of the present invention, through the innovative HALF segmented feeding technology and the ingenious use of magnetic installation accessories, successfully solves the problem of protective installation in semi-enclosed or enclosed spaces, and provides an efficient and reliable solution for the field of motor processing technology.

[0021] Another objective of this invention is to disclose a method for disassembling the aforementioned protective device for processing a winding stator core, characterized by the following steps: Y1. After the end is processed, clean the iron filings and debris inside the protective device; Y2. Fix the divided portion A of the protective body using a magnetic mounting accessory; loosen and push out the connecting bolts, and then place portion A onto the bearing chamber end face of the lower end cover; Y3. Then disassemble and remove the remaining portion B of the protective body.

[0022] Compared with the prior art, the beneficial effects of the present invention are: the stator core processing protection device of the present invention, through the structural design of the protective body, magnetic installation accessories, and sealing and diversion structure, can effectively block iron filings, grinding dust and coolant from entering the winding during the stator core processing, ensuring processing quality and subsequent operation safety.

[0023] By designing a sealed drainage structure, this invention allows coolant to be precisely and smoothly drained from the product's exterior, effectively preventing it from accumulating inside the product and damaging the windings.

[0024] The use of magnetic mounting accessories in this invention provides a stress point for the protective body during installation, simplifying the installation process, significantly shortening installation time, and improving work efficiency. Furthermore, this magnetic connection method makes disassembly more convenient; simply hook the segmented parts of the protective body with the magnetic mounting accessories and loosen the connecting bolts for easy disassembly, facilitating cleaning and maintenance of the device. It also increases the reusability of tooling and reduces production costs.

[0025] The modular protective structure allows for flexible adjustments to the splicing method to accommodate stator cores of different sizes, offering strong versatility and applicability. After processing, the device can be easily disassembled for thorough cleaning of residual iron powder and shavings, ensuring reliable operation.

[0026] The design, including the variable diameter cavity and the inwardly extending support plate of the third neck section, fully considers the various needs during installation, use, and maintenance. The rational combination of different neck section dimensions in the variable diameter inner bore optimizes and enhances the device's performance, providing initial positioning and guidance for the precise embedding of the protective body within the end cap. It also provides ample space for internal components, facilitating installation, commissioning, inspection, and maintenance. The support plate not only enhances the strength and stability of this part of the protective body but also precisely positions the adapter, ensuring the normal operation of the sealing and drainage structure.

[0027] In addition, the clearance notch on the outer side of the protective body facilitates the inspection work without affecting normal inspection operations.

[0028] Overall, the tooling turnover rate is increased by 300% and the amount of protective tooling used is reduced by using the winding stator core processing protection device of the present invention. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the overall structure of the stator core processing protection device in the prior art.

[0030] Figure 2 is a schematic diagram of the overall structure of the stator core processing protection device with windings described in this invention.

[0031] Figure 3 is a schematic diagram of the protective body of the protective device for processing the winding stator core described in this invention.

[0032] Figure 4 is a schematic diagram of the structure of the drain pipe of the stator core processing protection device with winding described in this invention.

[0033] Figure 5 is a schematic diagram of the installation structure of the protective device for the stator core with winding in Example 1.

[0034] Figure 6 is a schematic diagram of the installation structure of the protective device for processing the stator core with windings in Example 2.

[0035] Among them, 1-protective body, 2-sealing cover plate, 3-adapter, 4-drainage pipe, 5-sealing ring one, 6-sealing ring two, 7-avoidance notch, 8-magnetic installation accessory, 9-bolt, 11-accommodating cavity, 12-accommodating hole, 13-first neck section, 14-second neck section, 15-third neck section, 16-bearing base plate, 31-mounting surface, 32-sealing groove, 33-positioning buckle. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings. The drawings are for illustrative purposes only, representing schematic diagrams only, not actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Example 1

[0037] As shown in Figures 2-5, the protective device for processing the winding stator core in this embodiment includes a protective body 1 embedded in the end cover. The protective body 1 has a spliced ​​structure. A receiving cavity 11 is provided in the center of the protective body 1, and a sealing cover plate 2 is installed in the receiving cavity 11. A sealing drainage structure is provided at the bottom of the protective body 1. The sealing drainage structure includes an adapter 3 and a drainage pipe 4. One end of the adapter 3 is connected to the bottom of the receiving cavity 11, and the other end is connected to the drainage pipe 4. The drainage pipe 4 extends between the bearing chamber of the lower end cover to drain the coolant out of the product.

[0038] The stator core processing protection device of this invention adopts a spliced ​​structure design for the main body, which allows for flexible adjustment of the splicing method to adapt to actual needs when dealing with stator cores of different specifications and sizes. It also features convenient assembly and disassembly, high turnover rate, and enhanced versatility and applicability. The sealing cover plate fits tightly with the receiving cavity, effectively preventing iron filings, grinding dust, and coolant from entering the winding from above. Furthermore, the adapter in the sealed drainage structure is tightly connected to the bottom of the receiving cavity and the drainage pipe, ensuring that coolant can smoothly exit the product through the drainage pipe, preventing coolant accumulation inside the product and damage to the winding.

[0039] To facilitate flexible combination of stator cores of different sizes, simplify the installation and disassembly process, and improve work efficiency, the protective body 1 is designed to be assembled from multiple segments, preferably two segments in this embodiment, forming a complete circular surface. A receiving hole 12 is provided at the center of the protective body 1 to fix the end of the adapter 3, thus fixing the sealing cover 2 to the protective body 1. A second sealing ring 6 is axially arranged on the side of the sealing cover 2 that abuts against the protective body 1, and a first sealing ring 5 is radially arranged on the side of the adapter 3 that abuts against the sealing cover 2. The first sealing ring ensures the seal between the adapter and the sealing cover, preventing coolant leakage at the connection point and ensuring that the coolant can be smoothly discharged from the product through the drain pipe, avoiding potential damage to the windings due to coolant leakage. This double-sealing design greatly improves the protective effect of the device, providing a more reliable guarantee for the stator core processing.

[0040] The adapter 3 in this embodiment includes a mounting surface 31 with a sealing groove 32. The end of the adapter 3 is threaded to the sealing cover plate 2. The lower end of the adapter 3 is provided with a positioning buckle 33, preferably a semi-circular structure protruding from the adapter rod, which facilitates the quick installation and positioning of the rubber tube. The sealing groove on the mounting surface of the adapter can fit tightly with the sealing ring, further enhancing the sealing effect and preventing coolant leakage. Furthermore, the upper side of the cover plate can be sloped from the outside to the inside, facilitating the concentration of liquid at the center of the hole for outflow.

[0041] In this embodiment, the inner diameter of the receiving cavity 11 of the protective body 1 is configured with a variable diameter, divided into a first neck section 13, a second neck section 14, and a third neck section 15. The inner diameter D1 of the first neck section 13 is smaller than the inner diameter D2 of the second neck section 14, and the inner diameter D1 of the first neck section 11 is larger than the inner diameter D3 of the third neck section 15. Through the reasonable combination of different neck section sizes, the performance of the device is optimized and improved, providing a more reliable guarantee for the protective work during the processing of the winding stator core.

[0042] To provide ample operating space for the installation and removal of the sealing cover, the height of the third neck section (D3) is greater than the thickness of the sealing cover 2. A bearing base plate 16 extends inward from the third neck section 15, with its center forming a receiving hole 12 for accommodating the adapter 3. This inward-extending bearing base plate not only enhances the strength and stability of this part of the protective body, better withstanding various forces encountered during processing, but also, through the receiving hole formed at its center, further precisely positions the adapter.

[0043] Meanwhile, an avoidance notch 7 is provided on the outer side of the end of the protective body 1, and the size of the avoidance notch 7 is adapted to the space of the micrometer measuring head. The supporting base plate 16 of the protective body 1 is provided with a magnetic mounting accessory 8 mounting position, which uses strong magnetic attraction to increase the clamping and mounting of the protective body 1; the magnetic mounting accessory 8 includes a strong magnet 82 and a magnetizable auxiliary component 81.

[0044] The installation method of the protective device for stator core machining in this embodiment is the installation method of the protective installation body in a semi-enclosed space: it innovatively adopts the HULF segmented feeding installation method, including the following steps: S1. The protective body is machined using HALF, cut from the interface, and divided into two symmetrical halves; specifically, after the body is machined to the size, it is wire-cut from the interface (the wire-cut molybdenum wire diameter is 0.02), and divided into two symmetrical halves. The purpose is to solve the problem that the whole device is not easy to place inside the stator core. After the device body is cut into two halves, it can be easily inserted into the inner hole of the bearing chamber and installed from the back.

[0045] S2. Place the divided portion A of the protective body at an angle onto the surface of the bearing chamber of the lower end cap of the workpiece, and then place the remaining portion B of the protective body at an angle onto the surface of the bearing chamber of the lower end cap of the workpiece; S3. Lift portion A of the protective body using the magnetic mounting accessory 8 (using strong magnetic attraction 82 and iron wire), and connect it to the end cap using bolts 9, then lift the remaining portion B of the protective body and place it close to the mounting position; S4. Splice the remaining portion B with the installed portion A, ensuring a tight and seamless splice, completing the initial assembly of the protective body 1. Step 1: Installation; S5. Install the adapter 3 in the receiving hole 12 of the protective body 1 and fix it with a threaded connection, while ensuring that the sealing ring 5 is installed on the side of the adapter 3 that abuts against the sealing cover plate 2; S6. Cover the protective body 1 with the sealing cover plate 2, so that the sealing ring 6 abuts against the protective body 1 to ensure the sealing effect, and fix the sealing cover plate and the protective body together with bolts 8; S7. Connect the drain pipe 4 to the other end of the adapter 3, ensuring that the drain pipe 4 extends to the bottom of the stator core so as to drain the coolant out of the product, and at the same time check whether the connection of the drain pipe 4 is firm. Example 2

[0046] The structure of the protective device for processing the winding stator core in this embodiment is basically the same as that in Embodiment 1, except that the installation method is different. The magnetic installation accessory 8 uses a strong magnetic attraction combined with a magnetizable rod with a certain rigidity as an aid. The strong magnetic attraction increases the clamping and installation points of the protective body. By using a rigid rod or iron wire combined with strong magnetic attraction, the transportation, positioning and installation of the protective device body can be achieved more flexibly.

[0047] The disassembly method of the protective device structure for the processing of the winding stator core in this embodiment includes the following steps: Y1. After the processing of this end is completed, clean the iron filings and debris inside the protective device; Y2. Use the magnetic mounting accessory 8 to attach part A of the protective body; loosen the connecting bolts and push them out, and then place part A on the bearing chamber end face of the lower end cover; Y3. Then disassemble the remaining part B of the protective body and remove it.

[0048] This protective device for stator core machining with windings is not limited to protection during stator core machining; it can also be applied to various specific work environments requiring dust and water protection. The HALF structure solves the space installation problem.

[0049] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the protection scope of the invention, which should be defined by the claims.

Claims

1. A protective device for processing a stator core with windings, characterized in that, The product includes a protective body (1) embedded in the end cap. The protective body (1) is a spliced ​​structure. The protective body (1) has a receiving cavity (11) in the center. A sealing cover plate (2) is installed in the receiving cavity (11). A sealing drainage structure is provided at the bottom of the protective body (1). The sealing drainage structure includes an adapter (3) and a drainage pipe (4). One end of the adapter (3) is connected to the bottom of the receiving cavity (11), and the other end is connected to the drainage pipe (4). The drainage pipe (4) extends between the bearing chamber of the lower end cap to drain the coolant out of the product.

2. The protective device for processing winding stator cores according to claim 1, characterized in that, The protective body (1) is assembled from multiple petals. The protective body (1) has a receiving hole (12) in the center to fix the end of the adapter (3) so that the sealing cover (2) is fixedly connected to the protective body (1).

3. The protective device for processing winding stator cores according to claim 2, characterized in that, A sealing ring 2 (6) is provided axially on one side of the sealing cover plate (2) that abuts against the protective body (1), and a sealing ring 1 (5) is provided radially on one side of the adapter (3) that abuts against the sealing cover plate (2).

4. The protective device for processing winding stator cores according to claim 3, characterized in that, The adapter (3) includes a mounting surface (31) with a sealing groove (32), and the end of the adapter (3) is threaded to the sealing cover plate (2); the lower end of the adapter (3) is provided with a positioning buckle (33).

5. The protective device for processing winding stator cores according to claim 4, characterized in that, The inner hole of the cavity (11) of the protective body (1) is configured with a variable diameter, and is divided into a first neck section (13), a second neck section (14) and a third neck section (15). The inner diameter D1 of the first neck section (13) is smaller than the inner diameter D2 of the second neck section (14), and the inner diameter D1 of the first neck section (11) is larger than the inner diameter D3 of the third neck section (15).

6. The protective device for processing winding stator cores according to claim 5, characterized in that, The height of the third neck section D3 is greater than the thickness of the sealing cover plate (2); the third neck section (15) extends inward to a bearing base plate (16), and the center of the bearing base plate (16) forms a receiving hole (12) for accommodating the adapter (3).

7. The protective device for processing winding stator cores according to claim 6, characterized in that, The protective body (1) has an avoidance notch (7) on the outer side of its end. The size of the avoidance notch (7) is adapted to the space measured by the micrometer size.

8. The protective device for processing winding stator cores according to claim 7, characterized in that, The supporting base plate (16) of the protective body (1) is provided with a magnetic installation auxiliary part (8) mounting position, which uses strong magnetic attraction to increase the clamping and installation of the protective body (1); the magnetic installation auxiliary part (8) includes strong magnetic attraction and magnetizable auxiliary parts.

9. A method for installing the protective device for processing a winding stator core as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. The protective body (1) is processed using HALF and cut from the interface to divide it into symmetrical even-numbered halves; S2. Part A of the protective body (1) is placed obliquely into the surface of the bearing chamber of the lower end cap of the workpiece; the remaining part B of the protective body (1) is then placed obliquely into the surface of the bearing chamber of the lower end cap of the workpiece; S3. Part A of the protective body (1) is lifted by magnetic mounting accessory (8) and connected to the end cap by bolts; the remaining part B of the protective body (1) is then lifted and placed close to the mounting position. S4. Join the remaining part B with the already installed part A, ensuring a tight and seamless fit, to complete the initial installation of the protective body (1); S5. Install the adapter (3) in the receiving hole (12) of the protective body (1) and fix it with a threaded connection, ensuring that the sealing ring one (5) is correctly installed on the side where the adapter (3) and the sealing cover plate (2) abut; S6. Cover the protective body (1) with the sealing cover plate (2), so that the sealing ring two (6) abuts against the protective body (1), and fix the sealing cover plate (2) and the protective body (1) as one unit; S7. Connect the drain pipe (4) to the other end of the adapter (3), ensuring that the drain pipe (4) extends to the bottom of the stator core so that the coolant can be discharged outside the product, and at the same time check whether the drain pipe (4) is securely connected.

10. A method for disassembling the protective device for processing a winding stator core as described in any one of claims 1-8, characterized in that, Includes the following steps: Y1. After the processing of this end is completed, clean the iron filings and debris inside the protective device; Y2. Use the magnetic mounting accessory (8) to fix part A of the protective body; loosen the connecting bolts and push them out, and place part A on the bearing chamber end face of the lower end cover; Y3. Disassemble the remaining part B of the protective body and remove it.

Images