A rotor structure and manufacturing method of a disc-type low-speed high-torque synchronous reluctance motor

Abstract

The invention discloses a rotor structure and a manufacturing method of a disc-type low-speed, high-torque synchronous reluctance motor, which relates to the technical field of motor processing, including a rotor and a detection system. The rotor includes a rotating shaft, a spoke is installed on the outer surface of the rotating shaft, a connecting hole is opened on the top surface of the spoke, a lightweight hole is opened on the top surface of the spoke, a notch is opened on the outer surface of the spoke, and a rotor core is installed on the outer surface of the spoke. The side pressure plate of the invention cooperates with the inner circle notch of the spoke and the outer circle mesh hole of the annular belt to manufacture a rotor with high mechanical strength and rigidity, ensure the output of large torque and the axial flatness of the rotor air gap end face, the stator and rotor air gap end faces do not collide, the axial size of the air gap is small, and the motor has high efficiency and high power excellent performance, thereby making up for the problem that the motor rotor in the prior art is difficult to prepare a low-speed direct-drive motor due to the large number of poles, the large number of slots, and the limited structural strength. The motor has the advantages of low-speed direct drive and high efficiency, high power / high torque density.

Description

Technical Field

[0001] The present invention relates to the technical field of motor processing, and in particular to a rotor structure and a manufacturing method of a disc-type low-speed, high-torque synchronous reluctance motor. Background Art

[0002] The rotor is a key component widely used in various rotating machinery. Its core function is to rotate around a fixed axis. Whether it is in pumps and compressors in industrial production, generators in power plants, or in automobile engines and aircraft turbines, rotors play an indispensable role. The design and manufacture of rotors directly affect the efficiency, operating stability and service life of the equipment. Usually, the rotor is composed of components such as shafts, blades, and magnetic poles. The material selection and processing accuracy must meet high standards of mechanical performance requirements.

[0003] The rotor of the prior art generally needs to be used in conjunction with the stator. The rotor of the prior art is usually designed as an integral structure, mainly composed of a rotating shaft, a rotor core and fixings. These components are combined together by welding, bolting or heat press fitting, but the assembly process of the rotor structure of the prior art reluctance motor is complicated, requiring precise matching and multiple steps of operation, resulting in long assembly time and high cost. In addition, in the prior art, the use of materials is not optimized, and there is a large amount of material waste, which increases the manufacturing cost. The motor rotor of the prior art has poor mechanical strength and stiffness, low torque density, and is difficult to apply to low-speed and high-torque industrial applications. The existing low-speed and high-torque industrial applications generally adopt the "motor + reducer" method, which has the problems of high cost, large size, severe wear, short life and large loss.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to cooperate with the side pressure plate, the inner circle recess of the spoke and the outer circle mesh of the ring belt to manufacture a rotor with high mechanical strength and rigidity, ensure the output of large torque and the axial flatness of the rotor air gap end face, adopt a reasonable manufacturing process, the stator and rotor air gap end faces do not collide, the axial size of the air gap is small, and it has high efficiency and high power excellent performance, thereby compensating for the problem that the motor rotor in the prior art is difficult to prepare a low-speed direct-drive motor due to the large number of poles, the large number of slots, and the limited structural strength. The motor has the advantages of low-speed direct drive as well as high efficiency, high power and high torque density.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a rotor structure and manufacturing method of a disc-type low-speed, high-torque synchronous reluctance motor, including a rotor and a detection system, the rotor including a rotating shaft, a spoke installed on the outer surface of the rotating shaft, a connecting hole is opened on the top surface of the spoke, a lightweight hole is opened on the top surface of the spoke, a notch is opened on the outer surface of the spoke, a rotor core is installed on the outer surface of the spoke, a first slot is opened on the top surface of the rotor core, a second slot is opened on the bottom surface of the rotor core, a first pressure plate is installed on the top surface of the first slot, a second pressure plate is installed on the inner wall of the second slot, an inner protrusion is provided at one end of the first pressure plate and the second pressure plate, an outer protrusion is provided at the other end of the first pressure plate and the second pressure plate, an annular belt is installed on the outer surface of the rotor core, a positioning groove is opened on the outer surface of the annular belt, and a stator assembly 18 is installed on the outer surface of the rotating shaft.

[0007] Furthermore, there are a plurality of spokes, which are evenly distributed in a linear array on the outer surface of the shaft, and the shaft is fixedly connected to the spokes through connecting holes. The top surface of each spoke has a corresponding plurality of lightweight holes, which are evenly distributed in a circular array on the top surface of the spoke.

[0008] Furthermore, a plurality of recesses are correspondingly distributed on the outer surfaces of the plurality of spokes, and the plurality of recesses correspond one-to-one with the lightweight holes. The inner walls of the recesses are connected to the inner walls of the lightweight holes. There are a plurality of first slots, and the plurality of first slots are evenly distributed in a circular array on the top surface of the rotor core. There are a plurality of second slots, and the plurality of second slots are evenly distributed in a circular array on the bottom surface of the rotor core.

[0009] Furthermore, there are a plurality of positioning grooves, which are evenly distributed in a circular array on the outer surface of the ring belt; there are a plurality of second pressure plates, which are distributed one-to-one on the inner wall of the second card slot; and there are a plurality of first pressure plates, which are distributed one-to-one on the inner wall of the first card slot.

[0010] Furthermore, each of the first pressure plate and the second pressure plate is correspondingly provided with an inner protrusion at one end, and the first pressure plate and the second pressure plate are plugged into each other through the inner protrusion and the inner wall of the recess, and each of the first pressure plate and the second pressure plate is correspondingly provided with an outer protrusion at the other end, and the first pressure plate and the second pressure plate are plugged into each other through the outer protrusion and the inner wall of the positioning groove.

[0011] Furthermore, the stator assembly 18 includes a bearing, a first shell is installed on the outer surface of the bearing, a second shell is installed on the outer surface of the bearing, and the stator is installed on the inner walls of the first shell and the second shell.

[0012] Furthermore, there are two bearings, and the two bearings are equidistantly distributed on the outer surface of the rotating shaft. The inner wall of the bearing is movably and rotatably connected to the outer surface of the rotating shaft. The outer surfaces of the two bearings are respectively movably and rotatably connected to the inner wall of the protective shell and the inner wall of the bottom shell. The bottom end surface of the protective shell is fixedly connected to the top end surface of the bottom shell. The stators are two and are respectively distributed on the inner walls of the first shell and the second shell.

[0013] Further, the detection system includes a dynamic balance analysis unit, an image acquisition unit, and an image analysis unit;

[0014] The dynamic balancing analysis unit is used to perform a dynamic balancing test on the rotor through a dynamic balancing device, and collect rotor state data during the dynamic balancing test, the rotor state data including vibration data G, phase data H, speed data J, and a preset rotor stability standard N, and obtain a rotor balance evaluation coefficient M by calculating the rotor state data, compare the rotor balance evaluation coefficient M with the preset rotor stability standard N, and generate a rotor balance abnormality signal;

[0015] The image acquisition unit is used to obtain the abnormal balance signal, and control the dynamic balancing equipment to start the secondary dynamic balancing check of the rotor again. During the check, the rotor is photographed continuously at high speed by an industrial camera, so as to obtain several rotor angle images and mark them as Z1, Z2, Z3, Z4..., Zn, and the obtained rotor angle images are binarized, and the rotor angle grayscale image is obtained by selecting a suitable threshold to distinguish the color of the rotor part from the background color;

[0016] The image analysis unit is used to obtain the rotor grayscale image, analyze several rotor grayscale images in turn through the edge detection method, identify the pits or protrusions on the surface of the rotor disk, and mark the defects to form a rotor defect position information comparison map.

[0017] Furthermore, the process of generating a rotor defect position information comparison diagram is as follows;

[0018] S1: The vibration data G, phase data H, and speed data J of the rotor under test are collected through the dynamic balancing equipment, and averaged to obtain the average vibration data Gh, average phase data Hh, and average speed data Jh, and the rotor balance evaluation coefficient is obtained according to the following calculation formula: M = a·Gh+b·Hh+c·Jh, where a is the weight value of the average vibration data Gh, b is the weight value of the average vibration data Hh, and c is the weight value of the average vibration data Jh;

[0019] S2: Obtain the rotor balance evaluation coefficient M and compare it with the preset rotor stability standard N. When the rotor balance evaluation coefficient M < N, it means that the current rotor meets the test standard, and no signal is generated;

[0020] When the rotor balance evaluation coefficient M>N, it means that the current rotor does not meet the dynamic balance test standard, and a rotor balance abnormality signal is generated and sent to the image acquisition unit;

[0021] S3: The image acquisition unit obtains the alarm signal, and controls the industrial camera and the dynamic balancing device to start again through the controller, performs a second test on the unqualified rotor, and uses the industrial camera to take high-speed continuous shots of the tested rotor to obtain a number of rotor angle images, and marks the obtained rotor angle images as Z1, Z2, Z3, Z4..., Zn in the order of taking pictures;

[0022] S4: obtaining a plurality of rotor angle images, binarizing the plurality of rotor angle images, selecting a suitable threshold to distinguish the color of the rotor part from the background color, and converting the images into grayscale images to obtain a rotor angle grayscale image;

[0023] S5: Obtain a rotor angle grayscale image, analyze and process several rotor angle grayscale images in turn, and identify pits or protrusions on the rotor surface in the angle grayscale image through an edge detection method, mark the defects, and generate a rotor defect position information comparison map.

[0024] Further, the method comprises the following steps:

[0025] Step 1: Perform preliminary cutting and grinding on the end faces of the first and second slots of the rotor core, so that the first and second slots are parallel to the cross section of the shaft, and the first and second slots are well matched with the contact end faces of the first and second pressing plates;

[0026] Step 2: assemble the rotor core onto the outer circle of the wheel spoke, install the first pressing plate and the second pressing plate into the first clamping groove and the second clamping groove respectively on the top and bottom surfaces of the rotor core, and make the inner protrusions on one end of the first pressing plate and the second pressing plate be embedded into the notch on the outer surface of the wheel spoke to achieve splicing;

[0027] Step 3: Use a polymer fiber belt material for making an annular belt to wind the outer circle of the rotor core, cut off the belt material at the outer protrusions of the first pressing plate and the second pressing plate in real time, and cut the annular belt so that the radial height of the annular belt is consistent with the height of the rotor core;

[0028] Step 4: Fill the top and bottom end surfaces of the rotor core with epoxy resin to fill the gaps between the rotor core and the side pressure plates, spokes, and ring belts, and cut off excess and uneven epoxy resin after the epoxy resin is air-dried and cured to make the surface smooth;

[0029] Step 5: Heat the spokes to expand them, so that the connection holes on the top surfaces of the spokes can be plugged into the shaft, and then the assembled rotor can be dynamically balanced.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] The rotor structure and manufacturing method of the disc-type low-speed, high-torque synchronous reluctance motor manufactures a rotor with high mechanical strength and rigidity by cooperating the side pressure plate with the inner circle recess of the spoke and the outer circle mesh of the ring belt, thereby ensuring the output of large torque and the axial flatness of the rotor air gap end face. A reasonable manufacturing process is adopted, the stator and rotor air gap end faces do not collide, the axial size of the air gap is small, and the motor has high efficiency and high power excellent performance, thereby making up for the problem of the large number of poles and slots of the motor rotor in the prior art, and the motor has the defect of low-speed direct drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The overall external structure schematic diagram of the present invention is shown;

[0033] Figure 2 A schematic diagram of the internal structure of the first housing of the present invention is shown;

[0034] Figure 3 A schematic diagram of the internal explosion structure of the present invention is shown;

[0035] Figure 4 The schematic diagram of the structure of the multi-disc rotor of the present invention is shown;

[0036] Figure 5 A schematic diagram of the explosion structure of the rotor core of the present invention is shown;

[0037] Figure 6 It shows another exploded structural schematic diagram of the rotor core of the present invention;

[0038] Figure 7 A schematic diagram of the first pressing plate structure of the present invention is shown;

[0039] Figure 8 The flowchart of the detection system of the present invention is shown.

[0040] Legend: 1. Rotating shaft; 2. Spoke; 3. Connecting hole; 4. Lightweight hole; 5. Notch; 6. Rotor core; 7. First slot; 8. Second slot; 9. First pressure plate; 10. Second pressure plate; 11. Inner protrusion; 12. Outer protrusion; 13. Annular belt; 14. Positioning groove; 15. Bearing; 16. First shell; 17. Second shell; 18. Stator assembly. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1:

[0043] like Figure 1-8 As shown, a rotor structure of a disc-type low-speed, high-torque synchronous reluctance motor includes a rotor and a detection system, wherein the rotor includes a rotating shaft 1, a spoke 2 is installed on the outer surface of the rotating shaft 1, a connecting hole 3 is opened on the top surface of the spoke 2, a lightweight hole 4 is opened on the top surface of the spoke 2, a notch 5 is opened on the outer surface of the spoke 2, a rotor core 6 is installed on the outer surface of the spoke 2, a first slot 7 is opened on the top surface of the rotor core 6, a second slot 8 is opened on the bottom surface of the rotor core 6, a first pressure plate 9 is installed on the top surface of the first slot 7, a second pressure plate 10 is installed on the inner wall of the second slot 8, an inner protrusion 11 is provided at one end of the first pressure plate 9 and the second pressure plate 10, an outer protrusion 12 is provided at the other end of the first pressure plate 9 and the second pressure plate 10, an annular belt 13 is installed on the outer surface of the rotor core 6, a positioning groove 14 is opened on the outer surface of the annular belt 13, and a stator assembly 18 is installed on the outer surface of the rotating shaft 1.

[0044] There are a plurality of spokes 2, which are evenly distributed in a linear array on the outer surface of the shaft 1. The shaft 1 is fixedly connected to the spokes 2 through connecting holes 3. A plurality of lightweight holes 4 are correspondingly distributed on the top surface of each spoke 2, which are evenly distributed in a circular array on the top surface of the spoke 2.

[0045] Several recesses 5 are distributed correspondingly on the outer surfaces of several spokes 2, and several recesses 5 correspond to the lightweight holes 4 one by one. The inner walls of the recesses 5 are connected to the inner walls of the lightweight holes 4. There are several first slots 7, and several first slots 7 are evenly distributed in a circular array on the top surface of the rotor core 6. There are several second slots 8, which are evenly distributed in a circular array on the bottom surface of the rotor core 6.

[0046] There are a plurality of positioning grooves 14 which are evenly distributed in a circular array on the outer surface of the annular belt 13; there are a plurality of second pressure plates 10 which are distributed one-to-one on the inner wall of the second card slot 8; there are a plurality of first pressure plates 9 which are distributed one-to-one on the inner wall of the first card slot 7.

[0047] An inner protrusion 11 is correspondingly provided at one end of each first pressing plate 9 and the second pressing plate 10, and the first pressing plate 9 and the second pressing plate 10 are plugged into each other through the inner protrusion 11 and the inner wall of the recess 5. An outer protrusion 12 is correspondingly provided at the other end of each first pressing plate 9 and the second pressing plate 10, and the first pressing plate 9 and the second pressing plate 10 are plugged into each other through the outer protrusion 12 and the inner wall of the positioning groove 14.

[0048] The stator assembly 18 includes a bearing 15 , a first housing 16 is mounted on the outer surface of the bearing 15 , a second housing 17 is mounted on the outer surface of the bearing 15 , and a stator 18 is mounted on inner walls of the first housing 16 and the second housing 17 .

[0049] There are two bearings 15, which are equidistantly distributed on the outer surface of the rotating shaft 1. The inner wall of the bearing 15 is movably and rotatably connected to the outer surface of the rotating shaft 1. The outer surfaces of the two bearings 15 are movably and rotatably connected to the inner wall of the protective shell 16 and the inner wall of the bottom shell 17 respectively. The bottom end surface of the protective shell 16 is fixedly connected to the top end surface of the bottom shell 17. There are two stators 18, which are respectively distributed on the inner walls of the first shell 16 and the second shell 17.

[0050] The processing process is as follows: the first slot 7 and the second slot 8 end surfaces of the rotor core 6 are preliminarily cut and ground so that the first slot 7 and the second slot 8 are parallel to the cross section of the shaft 1 and the first slot 7 and the second slot 8 are well matched with the contact end surfaces of the first pressing plate 9 and the second pressing plate 10;

[0051] Then, the rotor core 6 is assembled on the outer circle of the wheel spoke 2, and the first pressing plate 9 and the second pressing plate 10 are respectively installed in the first clamping groove 7 and the second clamping groove 8 opened on the top and bottom surfaces of the rotor core 6, and the inner protrusions 11 set at one end of the first pressing plate 9 and the second pressing plate 10 are embedded in the notch 5 on the outer surface of the wheel spoke 2 to achieve splicing;

[0052] The polymer fiber belt material for making the annular belt 13 is wound around the outer circle of the rotor core 6, and the belt material at the outer protrusions 12 of the first pressing plate 9 and the second pressing plate 10 is cut off in real time, and the annular belt 13 is cut so that the radial height of the annular belt 13 is consistent with the height of the rotor core 6;

[0053] Epoxy resin is poured on the top and bottom end surfaces of the rotor core 6 to fill the gaps between the rotor core 6 and the side pressure plate, the spoke 2, and the annular belt 13, and after the epoxy resin is air-dried and cured, the excess and uneven epoxy resin is cut to make the surface smooth;

[0054] The spoke 2 is heated to expand, so as to facilitate the connection between the connecting hole 3 opened on the top surface of the spoke 2 and the rotating shaft 1, and then the assembled rotor is subjected to dynamic balancing inspection.

[0055] Embodiment 2:

[0056] A rotor structure of a disc-type low-speed high-torque synchronous reluctance motor comprises a rotating shaft 1 and a detection system, wherein the detection system comprises a dynamic balancing analysis unit, an image acquisition unit, and an image analysis unit;

[0057] The dynamic balancing analysis unit is used to perform a dynamic balancing test on the rotor through a dynamic balancing device, and collect rotor state data during the dynamic balancing test, the rotor state data including vibration data G, phase data H, speed data J, and a preset rotor stability standard N, and obtain a rotor balance evaluation coefficient M by calculating the rotor state data, compare the rotor balance evaluation coefficient M with the preset rotor stability standard N, and generate a rotor balance abnormality signal;

[0058] The image acquisition unit is used to obtain the abnormal balance signal, and control the dynamic balancing equipment to start the secondary dynamic balancing check of the rotor again. During the check, the rotor is photographed continuously at high speed by an industrial camera, so as to obtain several rotor angle images and mark them as Z1, Z2, Z3, Z4..., Zn, and the obtained rotor angle images are binarized, and the rotor angle grayscale image is obtained by selecting a suitable threshold to distinguish the color of the rotor part from the background color;

[0059] The image analysis unit is used to obtain the rotor grayscale image, analyze several rotor grayscale images in turn through the edge detection method, identify the pits or protrusions on the surface of the rotor disk, and mark the defects to form a rotor defect position information comparison map.

[0060] The process of generating the rotor defect position information comparison diagram is as follows;

[0061] S1: The vibration data G, phase data H, and speed data J of the rotor under test are collected through the dynamic balancing equipment, and averaged to obtain the average vibration data Gh, average phase data Hh, and average speed data Jh, and the rotor balance evaluation coefficient is obtained according to the following calculation formula: M = a·Gh+b·Hh+c·Jh, where a is the weight value of the average vibration data Gh, b is the weight value of the average vibration data Hh, and c is the weight value of the average vibration data Jh;

[0062] S2: Obtain the rotor balance evaluation coefficient M and compare it with the preset rotor stability standard N. When the rotor balance evaluation coefficient M < N, it means that the current rotor meets the test standard, and no signal is generated;

[0063] When the rotor balance evaluation coefficient M>N, it means that the current rotor does not meet the dynamic balance test standard, and a rotor balance abnormality signal is generated and sent to the image acquisition unit;

[0064] S3: The image acquisition unit obtains the alarm signal, and controls the industrial camera and the dynamic balancing device to start again through the controller, performs a second test on the unqualified rotor, and uses the industrial camera to take high-speed continuous shots of the tested rotor to obtain a number of rotor angle images, and marks the obtained rotor angle images as Z1, Z2, Z3, Z4..., Zn in the order of taking pictures;

[0065] S4: obtaining a plurality of rotor angle images, binarizing the plurality of rotor angle images, selecting a suitable threshold to distinguish the color of the rotor part from the background color, and converting the images into grayscale images to obtain a rotor angle grayscale image;

[0066] S5: Obtain a rotor angle grayscale image, analyze and process several rotor angle grayscale images in turn, and identify pits or protrusions on the rotor surface in the angle grayscale image through an edge detection method, mark the defects, and generate a rotor defect position information comparison map.

[0067] The size of the interval and threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by technical personnel in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value.

[0068] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0069] In the two embodiments provided in the present application, it should be understood that the disclosed devices and systems can be implemented in other ways; for example, the device embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed; another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, the indirect coupling or communication connection of devices or modules can be electrical, mechanical or other forms;

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotor structure and manufacturing method of a disc-type low-speed high-torque synchronous reluctance motor, characterized in that: The invention comprises a rotor and a detection system, characterized in that: the rotor comprises a rotating shaft (1), a spoke (2) is installed on the outer surface of the rotating shaft (1), a connecting hole (3) is provided on the top surface of the spoke (2), a lightweight hole (4) is provided on the top surface of the spoke (2), a notch (5) is provided on the outer surface of the spoke (2), a rotor core (6) is installed on the outer surface of the spoke (2), a first slot (7) is provided on the top surface of the rotor core (6), and a second slot (8) is provided on the bottom surface of the rotor core (6). A first pressure plate (9) is installed on the top surface of the first slot (7), a second pressure plate (10) is installed on the inner wall of the second slot (8), one end of the first pressure plate (9) and the second pressure plate (10) is provided with an inner protrusion (11), and the other end of the first pressure plate (9) and the second pressure plate (10) is provided with an outer protrusion (12), an annular belt (13) is installed on the outer surface of the rotor core (6), and a positioning groove (14) is provided on the outer surface of the annular belt (13), and a stator assembly 18 is installed on the outer surface of the rotating shaft (1).

2. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1 is characterized in that: There are a plurality of spokes (2), which are evenly distributed in a linear array on the outer surface of the shaft (1); the shaft (1) is fixedly connected to the spokes (2) via a connecting hole (3); a plurality of lightweight holes (4) are correspondingly distributed on the top surface of each spoke (2); and the plurality of lightweight holes (4) are evenly distributed in a circular array on the top surface of the spoke (2).

3. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1, characterized in that: A plurality of notches (5) are correspondingly distributed on the outer surfaces of the plurality of spokes (2), and the plurality of notches (5) correspond to the lightweight holes (4) one by one, and the inner walls of the notches (5) are connected to the inner walls of the lightweight holes (4); a plurality of first slots (7) are evenly distributed in a circular array on the top surface of the rotor core (6); and a plurality of second slots (8) are evenly distributed in a circular array on the bottom surface of the rotor core (6).

4. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1, characterized in that: There are a plurality of positioning grooves (14), which are evenly distributed in a circular array on the outer surface of the ring belt (13); there are a plurality of second pressure plates (10), which are distributed one-to-one on the inner wall of the second card slot (8); and there are a plurality of first pressure plates (9), which are distributed one-to-one on the inner wall of the first card slot (7).

5. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1, characterized in that: One end of each of the first pressing plate (9) and the second pressing plate (10) is correspondingly provided with an inner protrusion (11), and the first pressing plate (9) and the second pressing plate (10) are plugged into each other through the inner protrusion (11) and the inner wall of the recess (5); the other end of each of the first pressing plate (9) and the second pressing plate (10) is correspondingly provided with an outer protrusion (12), and the first pressing plate (9) and the second pressing plate (10) are plugged into each other through the outer protrusion (12) and the inner wall of the positioning groove (14).

6. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1, characterized in that: The stator assembly 18 comprises a bearing (15), a first housing (16) is mounted on the outer surface of the bearing (15), a second housing (17) is mounted on the outer surface of the bearing (15), and a stator (18) is mounted on the inner walls of the first housing (16) and the second housing (17).

7. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 6, characterized in that: There are two bearings (15), and the two bearings (15) are equidistantly distributed on the outer surface of the rotating shaft (1). The inner wall of the bearing (15) is movably and rotatably connected to the outer surface of the rotating shaft (1). The outer surfaces of the two bearings (15) are movably and rotatably connected to the inner wall of the protective shell (16) and the inner wall of the bottom shell (17), respectively. The bottom end surface of the protective shell (16) is fixedly connected to the top end surface of the bottom shell (17). The stator (18) is two and is respectively distributed on the inner walls of the first shell (16) and the second shell (17).

8. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1, characterized in that: The detection system includes a dynamic balance analysis unit, an image acquisition unit, and an image analysis unit; The dynamic balancing analysis unit is used to perform a dynamic balancing test on the rotor through a dynamic balancing device, and collect rotor state data during the dynamic balancing test, the rotor state data including vibration data G, phase data H, speed data J, and a preset rotor stability standard N, and obtain a rotor balance evaluation coefficient M by calculating the rotor state data, compare the rotor balance evaluation coefficient M with the preset rotor stability standard N, and generate a rotor balance abnormality signal; The image acquisition unit is used to obtain the abnormal balance signal, and control the dynamic balancing equipment to start the secondary dynamic balancing check of the rotor again. During the check, the rotor is photographed continuously at high speed by an industrial camera, so as to obtain several rotor angle images and mark them as Z1, Z2, Z3, Z4..., Zn, and the obtained rotor angle images are binarized, and the rotor angle grayscale image is obtained by selecting a suitable threshold to distinguish the color of the rotor part from the background color; The image analysis unit is used to obtain the rotor grayscale image, analyze several rotor grayscale images in turn through the edge detection method, identify the pits or protrusions on the surface of the rotor disk, and mark the defects to form a rotor defect position information comparison map.

9. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1, characterized in that: The process of generating the rotor defect position information comparison diagram is as follows; S1: The vibration data G, phase data H, and speed data J of the rotor under test are collected through the dynamic balancing equipment, and averaged to obtain the average vibration data Gh, average phase data Hh, and average speed data Jh, and the rotor balance evaluation coefficient is obtained according to the following calculation formula: M = a·Gh+b·Hh+c·Jh, where a is the weight value of the average vibration data Gh, b is the weight value of the average vibration data Hh, and c is the weight value of the average vibration data Jh; S2: Obtain the rotor balance evaluation coefficient M and compare it with the preset rotor stability standard N. When the rotor balance evaluation coefficient M < N, it means that the current rotor meets the test standard, and no signal is generated; When the rotor balance evaluation coefficient M>N, it means that the current rotor does not meet the dynamic balance test standard, and a rotor balance abnormality signal is generated and sent to the image acquisition unit; S3: The image acquisition unit obtains the alarm signal, and controls the industrial camera and the dynamic balancing device to start again through the controller, performs a second test on the unqualified rotor, and uses the industrial camera to take high-speed continuous shots of the tested rotor to obtain a number of rotor angle images, and marks the obtained rotor angle images as Z1, Z2, Z3, Z4..., Zn in the order of taking pictures; S4: obtaining a plurality of rotor angle images, binarizing the plurality of rotor angle images, selecting a suitable threshold to distinguish the color of the rotor part from the background color, and converting the images into grayscale images to obtain a rotor angle grayscale image; S5: Obtain a rotor angle grayscale image, analyze and process several rotor angle grayscale images in turn, and identify pits or protrusions on the rotor surface in the angle grayscale image through an edge detection method, mark the defects, and generate a rotor defect position information comparison map.

10. The rotor structure and manufacturing method of the disc-type low-speed high-torque synchronous reluctance motor according to claim 1, characterized in that: The steps include: Step 1: Preliminary cutting and grinding are performed on the end faces of the first clamping groove (7) and the second clamping groove (8) of the rotor core (6), so that the first clamping groove (7) and the second clamping groove (8) are parallel to the cross section of the rotating shaft (1), and the contact end faces of the first clamping groove (7) and the second clamping groove (8) and the first pressing plate (9) and the second pressing plate (10) are well matched; Step 2: assemble the rotor core (6) onto the outer circle of the spoke (2), install the first pressing plate (9) and the second pressing plate (10) in the first clamping groove (7) and the second clamping groove (8) respectively provided on the top and bottom surfaces of the rotor core (6), and make the inner protrusions (11) provided at one end of the first pressing plate (9) and the second pressing plate (10) be embedded in the recess (5) on the outer surface of the spoke (2) to achieve splicing; Step 3: Use a polymer fiber belt material for making an annular belt (13) to wind the outer circle of the rotor core (6), and cut off the belt material at the outer protrusions (12) of the first pressing plate (9) and the second pressing plate (10) in real time, and cut the annular belt (13) so that the radial height of the annular belt (13) is consistent with the height of the rotor core (6); Step 4: Fill the top and bottom end surfaces of the rotor core (6) with epoxy resin to fill the gaps between the rotor core (6) and the side pressure plates, the spokes (2), and the annular belt (13), and after the epoxy resin is air-dried and cured, cut off the excess and uneven epoxy resin to make the surface smooth; Step 5: Heat the spoke (2) to expand it, so as to facilitate the connection between the connecting hole (3) opened on the top surface of the spoke (2) and the rotating shaft (1), and then perform a dynamic balance check on the assembled rotor.

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