Ultrahigh-voltage multilayer enameled wire

Abstract

The invention belongs to the technical field of enameled wires, and particularly relates to an ultrahigh-voltage multi-layer enameled wire which comprises a protection core, a waterproof inner sheath, a shielding woven mesh, a multi-woven copper wire, a silicon steel magnetic shielding disc, a damping part and a limiting part, the protection core is fixedly connected to the opposite side surface of the silicon steel magnetic shielding disc, and the silicon steel magnetic shielding disc is clamped to one side of an external motor stator; the waterproof inner sheath is fixedly connected in the protection core, the shielding woven mesh sleeves the inner side of the waterproof inner sheath, the multi-woven copper wire sleeves the inner side of the shielding woven mesh, the damping part is rotatably connected to one side of the silicon steel magnetic shielding disc, and the limiting part is fixedly connected to the opposite inner side of the damping part. Aiming at electromagnetic harmonic waves caused by multi-degree vibration of the motor, the waterproof inner sheath is added outside the silicon steel magnetic shielding disc and the stator slot of the motor shaft through the connecting keys and outside the shielding woven mesh, and the waterproof inner sheath is wound in the multi-woven copper wire layer by layer, so that the protection core can meet the moisture-proof requirement in a humid environment; and excessive aging of the multi-braided copper wire is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of enameled wires, and in particular relates to an ultra-high voltage multi-layer enameled wire. Background Art

[0002] Enameled wire is a main type of winding wire, which consists of a conductor and an insulating layer. The bare wire is annealed and softened, then painted and baked for many times. However, it is not easy to produce products that meet both standard requirements and customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and environment. Therefore, the quality characteristics of various enameled wires are different, but they all have four major properties: mechanical properties, chemical properties, electrical properties, and thermal properties.

[0003] For example, a Chinese patent disclosed as "CN219303420U" discloses a self-adhesive enameled wire coil. The self-adhesive enameled wire coil in the device has a rectangular cross-section as a whole. When it is wound into a coil, it can effectively increase the contact area of ​​adjacent self-adhesive enameled wires in the coil and improve the overall bonding strength of the coil, thereby effectively ensuring the quality and stability of the coil forming. For another example, a Chinese patent disclosed as "CN219163035U" discloses a composite enameled wire. The insulating film layer structure formed by winding has higher elastic freedom and flexural resistance than the paint film insulation structure formed by coating. It can further effectively improve its flexural resistance on the basis of ensuring the overall performance of the enameled wire to prevent the insulating layer of the enameled wire from being damaged due to bending.

[0004] Traditional enameled wire mainly adopts a single-wire structure, that is, each wire is insulated separately. However, in some special application scenarios, the traditional single-wire structure may have problems such as electromagnetic interference and easy wire breakage. Because the enameled wire is wound outside the motor stator, in some application scenarios with high requirements for electromagnetic interference, it will not be able to shield external electromagnetic interference and protect the internal wires from being affected without a shielding layer.

[0005] Therefore, an ultra-high voltage multi-layer enameled wire is designed to solve the above problems. Summary of the invention

[0006] To solve the problems raised in the above background technology. The present invention provides an ultra-high voltage multi-layer enameled wire. The traditional enameled wire mainly adopts a single-wire structure, that is, each wire is separately insulated. However, in some special application scenarios, the traditional single-wire structure may have problems such as electromagnetic interference and easy wire breakage. Since the enameled wire is wound around the outside of the motor stator, in some application scenarios with high requirements for electromagnetic interference, it will be impossible to shield external electromagnetic interference and protect the internal wires from being affected if there is no shielding layer.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultra-high voltage multi-layer enameled wire, comprising a protective core, a waterproof inner sheath, a shielding braided mesh, multiple braided copper wires, a silicon steel magnetic shielding disk, a shock absorbing part and a limiting part, wherein the protective core is fixedly connected to the opposite side surface of the silicon steel magnetic shielding disk, the silicon steel magnetic shielding disk is clamped on one side of the external motor stator, the waterproof inner sheath is fixedly connected to the inside of the protective core, the shielding braided mesh is sleeved on the inner side of the waterproof inner sheath, the multiple braided copper wires are sleeved on the inner side of the shielding braided mesh, the shock absorbing part is rotatably connected to one side of the silicon steel magnetic shielding disk, and the limiting part is fixedly connected to the relative inner side of the shock absorbing part;

[0008] The silicon steel magnetic shielding disk is based on the refraction of magnetic flux lines and magnetic circuit shunting and guides the magnetic flux lines to bypass specific areas of the motor stator. The protective core is used to protect the multi-braided copper wires and prevent mechanical damage. The waterproof inner sheath is used to shield the external waterproofing of the braided mesh. The shielding braided mesh is used to shield low-frequency electromagnetic wave interference and reduce the error rate. The multi-braided copper wire is twisted into copper wire by multiple fine copper wires and is used to increase the overall flexibility and mechanical strength of the copper wire. The shock absorbing part is used to reduce the vibration amplitude of the motor operation and prevent electromagnetic harmonics. The limit part is used to strengthen the connection stability between the silicon steel magnetic shielding disk and the motor rotor.

[0009] Furthermore, the shock absorbing part includes a circular insert ring, a square block, a magnet sheet, a mass block, a connecting strip, a hollow column and an air chamber damping rod. The circular insert ring is rotatably connected to the inner side of the silicon steel magnetic shielding disk, the square block is fixedly connected to the inner side of the circular insert ring, the outer side of the magnet sheet is attracted to the surface of the motor stator, the mass block is fixedly connected to one side of the magnet sheet, the two ends of the connecting strip are respectively fixedly connected to the opposite side surfaces of the mass block and the hollow column, one side of the hollow column is fixedly connected to the surface of the square block, and the air chamber damping rod is installed inside the hollow column.

[0010] Furthermore, the limiting portion includes a square bracket, a compression spring and a fitting sheet, the square bracket is fixedly connected to the inner side of the circular plug ring, the fitting sheet is slidably connected to the inner side of the square bracket, and the outer side of the fitting sheet is fitted with the surface of the motor rotor, and the two sides of the compression spring are respectively fixedly connected to the opposite side surfaces of the square bracket and the fitting sheet.

[0011] Furthermore, a limit spring, a fixed rod and a push plate are also provided inside the hollow column. The limit spring is sleeved on the outside of the air chamber damping rod. One end of the fixed rod is fixedly connected to the surface of the connecting strip. The two sides of the push plate are respectively abutted against the opposite side surfaces of the air chamber damping rod and the fixed rod.

[0012] Furthermore, the outer surface of the silicon steel magnetic shielding disk is also provided with key slots of equal size, and the key slot annular array is on the outer side of the silicon steel magnetic shielding disk.

[0013] Furthermore, the outer side of the protective core is coated with a wear-resistant surface layer.

[0014] Furthermore, a U-shaped spring sheet is provided on the inner side of the protective core, and the top bending part of the U-shaped spring sheet is in contact with the inner surface of the protective core.

[0015] Furthermore, the thickness of the waterproof inner sheath is ≤0.01 mm, and the waterproof inner sheath is used for sealing and isolating and preventing fluid penetration.

[0016] Furthermore, the thickness of the shielding braided mesh is 0.02 mm-0.04 mm, and the shielding braided mesh is used to shield electromagnetic wave interference.

[0017] Furthermore, the shock absorbing parts are provided in a plurality of groups, and the plurality of groups of shock absorbing parts are symmetrically distributed on the inner side of the silicon steel magnetic shielding disk.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the rotor, stator, bearing and other mechanical parts of the motor will produce friction and collision during operation, thereby generating vibration. Especially when these parts are worn, loose or unbalanced, the vibration will be more obvious. This device aims at the electromagnetic harmonics caused by the multi-degree vibration of the motor. The silicon steel magnetic shielding disk and the stator slot of the motor shaft are connected by a key, so that multiple groups of magnetic suction sheets can fit the stator, thereby strengthening the connectivity, and cooperating with the air chamber damping rod to buffer the amplitude and enhance the service life of the motor.

[0020] 2. In the present invention, the device adds a waterproof inner sheath to the outer layer of the shielding braided mesh. The waterproof inner sheath is made of polyethylene and is wrapped layer by layer inside the multi-braided copper wire, so that the protective core can meet the water-blocking and moisture-proof requirements in a humid environment, thereby avoiding excessive aging of the internal multi-braided copper wire.

[0021] 3. In the present invention, the silicon steel magnetic shielding disk of the device utilizes a disk-shaped structure made of materials with different magnetic permeabilities. When the magnetic flux lines enter the low magnetic permeability material from the high magnetic permeability material, the magnetic flux lines will be refracted, thereby changing their propagation path. The disk-shaped silicon steel magnetic shielding disk structure can effectively guide the magnetic flux lines to bypass specific areas, thereby achieving the purpose of shielding the magnetic field. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is an exploded view of the silicon steel magnetic shielding disk and the protective core in the present invention;

[0025] Figure 3 It is a structural schematic diagram of the limiting part in the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the circular insert ring in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the shock absorbing part in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure inside the hollow column of the present invention;

[0029] Figure 7 is a distribution diagram of the compression spring in the present invention;

[0030] Figure 8 It is a cross-sectional view of the shielding braided mesh and the multi-braided copper wires in the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the U-shaped spring sheet in the present invention.

[0032] In the figure:

[0033] 1. Protective core; 2. Waterproof inner sheath; 3. Shielding braided mesh; 4. Multi-braided copper wire; 5. Silicon steel magnetic shielding disk; 6. Shock absorption part; 61. Round plug ring; 62. Square block; 63. Magnet sheet; 64. Mass block; 65. Connecting strip; 66. Hollow column; 67. Air chamber damping rod; 7. Limiting part; 71. Square bracket; 72. Compression spring; 73. Fitting sheet; 8. Limiting spring; 9. Fixing rod; 10. Pushing disk; 11. Keyway; 12. Wear-resistant surface layer; 13. U-shaped spring sheet. DETAILED DESCRIPTION

[0034] 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.

[0035] like Figure 1-Figure 9The ultra-high voltage multi-layer enameled wire shown in the figure includes a protective core 1, a waterproof inner sheath 2, a shielding braided mesh 3, multiple braided copper wires 4, a silicon steel magnetic shielding disk 5, a shock absorbing part 6 and a limiting part 7. The protective core 1 is fixedly connected to the opposite side surface of the silicon steel magnetic shielding disk 5, the silicon steel magnetic shielding disk 5 is clamped on one side of the external motor stator, the waterproof inner sheath 2 is fixedly connected to the inside of the protective core 1, the shielding braided mesh 3 is sleeved on the inner side of the waterproof inner sheath 2, the multiple braided copper wires 4 are sleeved on the inner side of the shielding braided mesh 3, the shock absorbing part 6 is rotatably connected to one side of the silicon steel magnetic shielding disk 5, and the limiting part 7 is fixedly connected to the opposite side of the shock absorbing part 6. Inside; the silicon steel magnetic shielding disk 5 guides the magnetic flux lines to bypass specific areas of the motor stator based on the refraction and magnetic circuit shunting of the magnetic flux lines. The protective core 1 is used to protect the multi-braided copper wires 4 and prevent mechanical damage. The waterproof inner sheath 2 is used to waterproof the outside of the shielding braided mesh 3. The shielding braided mesh 3 is used to shield low-frequency electromagnetic wave interference and reduce the error rate. The multi-braided copper wire 4 is twisted into copper wire by multiple fine copper wires and is used to increase the overall flexibility and mechanical strength of the copper wire. The shock absorbing part 6 is used to reduce the vibration amplitude of the motor operation and prevent electromagnetic harmonics. The limit part 7 is used to strengthen the connection stability between the silicon steel magnetic shielding disk 5 and the motor rotor.

[0036] The rotor, stator, bearings and other mechanical parts of the motor will produce friction and collision during operation, thereby generating vibration. Especially when these parts are worn, loose or unbalanced, the vibration will be more obvious. In order to solve the electromagnetic harmonics caused by the multiple vibrations of the motor, the device connects the silicon steel magnetic shielding disk 5 and the stator slot of the motor shaft through a connecting key, so that multiple groups of magnetic suction plates can fit the stator, thereby enhancing the connectivity, and cooperates with the air chamber damping rod 67 to buffer the amplitude and enhance the service life of the motor. In addition, the device adds a waterproof inner sheath 2 to the outer layer of the shielding braided mesh 3. The waterproof inner sheath 2 is made of polyethylene and is wound layer by layer in the multi-braided copper wire 4, so that the protective core 1 can meet the water-proof and moisture-proof requirements in a humid environment, thereby avoiding excessive aging of the internal multi-braided copper wire 4. In addition, the silicon steel magnetic shielding disk 5 of the present device utilizes a disk-shaped structure made of materials with different magnetic permeabilities. When the magnetic flux lines enter the low magnetic permeability material from the high magnetic permeability material, the magnetic flux lines will be refracted, thereby changing their propagation path. The disk-shaped silicon steel magnetic shielding disk 5 structure can effectively guide the magnetic flux lines to bypass specific areas, thereby achieving the purpose of shielding the magnetic field.

[0037] like Figure 3 - Fig. 9As shown, the shock absorbing part 6 includes a circular insert ring 61, a square block 62, a magnet sheet 63, a mass block 64, a connecting strip 65, a hollow column 66 and an air chamber damping rod 67. The circular insert ring 61 is rotatably connected to the inner side of the silicon steel magnetic shielding disk 5, the square block 62 is fixedly connected to the inner side of the circular insert ring 61, the outer side of the magnet sheet 63 is attracted to the surface of the motor stator, the mass block 64 is fixedly connected to one side of the magnet sheet 63, the two ends of the connecting strip 65 are fixedly connected to the opposite side surfaces of the mass block 64 and the hollow column 66 respectively, one side of the hollow column 66 is fixedly connected to the surface of the square block 62, and the air chamber damping rod 67 is installed inside the hollow column 66.

[0038] Due to various factors such as the interaction of mechanical parts inside the motor, changes in electromagnetic force, and uneven load, a certain degree of vibration is usually generated. This vibration is sometimes normal and acceptable within a certain range. However, if the vibration exceeds the normal range, it may have an adverse effect on the performance, reliability and life of the motor. The silicon steel magnetic shielding disk 5 is made of high magnetic permeability material, which can effectively guide the magnetic flux lines to bypass specific areas, achieving the purpose of efficiently shielding the magnetic field. The silicon steel magnetic shielding disk 5 is not easily affected by the external environment during use and has high stability and reliability.

[0039] The limiting portion 7 includes a square bracket 71, a compression spring 72 and a fitting sheet 73. The square bracket 71 is fixedly connected to the inner side of the circular plug ring 61, the fitting sheet 73 is slidably connected to the inner side of the square bracket 71, and the outer side of the fitting sheet 73 fits with the surface of the motor rotor. The two sides of the compression spring 72 are fixedly connected to the opposite side surfaces of the square bracket 71 and the fitting sheet 73 respectively.

[0040] By inserting the silicon steel magnetic shielding disk 5 along the tooth groove on the outside of the motor stator, and then using a connecting key to connect the keyway 11 of the silicon steel magnetic shielding disk 5 with the surface of the motor stator, and then winding multiple groups of protective cores 1 at 120° and connected to the rotor core and the inner side of the stator groove, the stator coil generates a surrounding magnetic field after being energized, thereby driving the rotor core to rotate. Since the motor stator is fixed to the silicon steel magnetic shielding disk 5, the surface of the rotor core is in full contact with the square bracket 71, so that the built-in compression spring 72 of the square bracket 71 is compressed and deformed. Under the reaction force of the spring, the compression spring 72 on the inner side of the square bracket 71 can push the bonding sheet 73 outward, and the bonding sheet 73 is tightly attached to the surface of the rotor core.

[0041] The shielding braided mesh 3 is a braided shielding layer added inside the protective core 1 to achieve the purpose of electromagnetic shielding. This layer of shielding braided mesh 3 is usually woven from tinned round copper wire or other metal materials, which can effectively shield external electromagnetic interference and ensure the stability of the signal. At the same time, it can also prevent the internal signal from radiating outward and reduce interference with other equipment. The woven shielding braided mesh 3 can effectively shield low-frequency electromagnetic wave interference, reduce the error rate, and ensure the stability of signal quality. The shielding braided mesh 3 is made of high-strength material and has good wear resistance, which can effectively protect the multi-braided copper wires 4 inside the protective core 1.

[0042] A limit spring 8, a fixed rod 9 and a push plate 10 are also provided inside the hollow column 66. The limit spring 8 is sleeved on the outside of the air chamber damping rod 67. One end of the fixed rod 9 is fixedly connected to the surface of the connecting strip 65. Both sides of the push plate 10 are respectively in contact with the opposite side surfaces of the air chamber damping rod 67 and the fixed rod 9.

[0043] When the motor is running, the multiple groups of square brackets 71 surrounding the motor can drive the circular insert ring 61 to rotate with the rotor core. When the motor is running, vibration is usually generated. When the electromagnetic field inside the motor changes, electromagnetic force will be generated. These forces will cause the motor to vibrate, especially when the electromagnetic field is uneven or there are harmonics, the vibration will be more significant. Under normal conditions, since the motor stator and the silicon steel magnetic shielding disk 5 have been installed, at this time, the magnet sheet 63 located outside the square block 62 is fully fitted on the stator surface, and the excessive vibration energy is absorbed by the mass block 64. The mass block 64 transfers the energy to the hollow column 66 and the internal air chamber damping rod 67 through the connecting strip 65. The built-in damping of the air chamber damping rod 67 will hinder its movement and convert the vibration energy into heat energy or other forms of energy, thereby further reducing the vibration of the original system. During the vibration process, the limit spring 8 will deform, convert the vibration energy into the potential energy of the spring, and achieve a resonance effect with the same frequency as the motor through the mass block 64, and fully reduce shock.

[0044] This device achieves the dynamic vibration absorption effect by connecting the mass block 64 to the motor stator. When the vibration frequency of the vibrating object matches the natural frequency of the dynamic vibration absorber, the two will resonate. At this time, the air chamber damping rod 67 can absorb the vibration energy to the maximum extent and convert it into the potential energy of the spring or the kinetic energy of the mass block 64. It can efficiently absorb and consume the vibration energy, thereby significantly reducing the vibration amplitude and noise level of the vibrating motor. In addition, by using different limit springs 8 and adjusting the stiffness parameters of the limit springs 8, it can adapt to motors of different powers and amplitudes.

[0045] The outer surface of the silicon steel magnetic shielding disk 5 is also provided with key slots 11 of equal size, and the key slots 11 are arranged in an annular array on the outer side of the silicon steel magnetic shielding disk 5 .

[0046] The mass block 64 of the device is also called an auxiliary mass or mass element. The mass block 64 absorbs and consumes vibration energy during the vibration process, thereby reducing the vibration of the original system. The limit spring 8 is an elastic element. The stiffness of the spring and the mass block 64 together determine the resonance frequency with the motor. During the vibration process, the spring will deform and convert the vibration energy into the potential energy of the spring. The air chamber damping rod 67 plays a role in consuming the vibration energy. When the mass block 64 moves during the vibration process, the damping will hinder its movement and convert the vibration energy into heat energy or other forms of energy, thereby further reducing the vibration of the original system.

[0047] The outer side of the protective core 1 is also coated with a wear-resistant surface layer 12 .

[0048] When the multi-braided copper wire 4 is used to make the stator coil, the protective core 1 is wound on the inside of the stator tooth slot in cooperation with the internal multi-braided copper wire 4. The stator coil is the stationary part of the motor. The magnetic field it generates interacts with the magnetic field in the rotor, thereby generating an electromagnetic force to drive the rotor to rotate. The winding of the stator coil needs to ensure the insulation between each turn to avoid short circuit and leakage. When the multi-braided copper wire 4 is used to make the rotor coil, the protective core 1 is wound on the outside of the rotor in cooperation with the internal multi-braided copper wire 4. It interacts with the magnetic field generated by the stator coil, thereby rotating under the action of the electromagnetic force. The winding of the rotor coil also needs to ensure the insulation between each turn, and it is necessary to take into account the force applied to the rotor during rotation to ensure that the connection is reliable to ensure the normal operation and performance of the motor.

[0049] A U-shaped spring piece 13 is further provided on the inner side of the protection core 1 , and the top bending part of the U-shaped spring piece 13 is in contact with the inner surface of the protection core 1 .

[0050] The thickness of the waterproof inner sheath 2 is ≤0.01 mm, and the waterproof inner sheath 2 is used for sealing and isolating and preventing fluid penetration.

[0051] The thickness of the shielding braided mesh 3 is 0.02 mm-0.04 mm, and the shielding braided mesh 3 is used to shield electromagnetic wave interference.

[0052] Several groups of shock absorbing parts 6 are provided, and the several groups of shock absorbing parts 6 are symmetrically distributed on the inner side of the silicon steel magnetic shielding disk 5 .

[0053] Working principle: When the device is in use, the silicon steel magnetic shielding disk 5 is inserted along the tooth groove on the outside of the motor stator, and then the keyway 11 of the silicon steel magnetic shielding disk 5 is plugged into the surface of the motor stator with a connecting key, and then multiple groups of protective cores 1 are wound at 120° and connected to the rotor core and the inner side of the stator groove. When the stator coil is energized, a surrounding magnetic field is generated, which drives the rotor core to rotate. Since the motor stator is fixed to the silicon steel magnetic shielding disk 5, the surface of the rotor core is in full contact with the square bracket 71, so that the built-in compression spring 72 of the square bracket 71 is compressed and deformed. Under the reaction force of the spring, the compression spring 72 on the inside of the square bracket 71 can push the bonding sheet 73 outward, and the bonding sheet 73 is tightly attached to the surface of the rotor core. When the motor is running, the multiple groups of square brackets 71 surrounding the ring can drive the circular plug ring 61 to rotate with the rotor core. When the motor is running, vibration is usually generated. When the electromagnetic field inside the motor changes, electromagnetic force is generated. These forces will cause the motor to vibrate, especially when the electromagnetic field is uneven or there are harmonics, the vibration will be more significant. Under normal conditions, since the motor stator and the silicon steel magnetic shielding disk 5 have been installed, at this time, the magnet sheet 63 located on the outside of the square block 62 is fully fitted to the stator surface, and excessive vibration energy is absorbed by the mass block 64. The mass block 64 transfers the energy to the hollow column 66 and the internal air chamber damping rod 67 through the connecting strip 65. When the mass block 64 moves during the vibration process, the built-in damping of the air chamber damping rod 67 will hinder its movement and convert the vibration energy into heat energy or other forms of energy, thereby further reducing the vibration of the original system. During the vibration process, the limit spring 8 will deform and convert the vibration energy into the potential energy of the spring, and achieve a resonance effect with the same frequency as the motor together with the mass block 64, and fully reduce shock. In addition, the U-shaped spring piece 13 installed in the protective core 1 buffers the pressure of the protective core 1 and the stator and rotor through its own elastic force, preventing the pressure from directly acting on the multi-braided copper wires 4 and causing irreversible deformation.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultra-high voltage multi-layer enameled wire, characterized in that: The invention comprises a protective core (1), a waterproof inner sheath (2), a shielding braided mesh (3), multiple braided copper wires (4), a silicon steel magnetic shielding disk (5), a shock absorbing portion (6) and a limiting portion (7), wherein the protective core (1) is fixedly connected to the opposite side surface of the silicon steel magnetic shielding disk (5), the silicon steel magnetic shielding disk (5) is clamped on one side of the stator of an external motor, the waterproof inner sheath (2) is fixedly connected to the inside of the protective core (1), the shielding braided mesh (3) is sleeved on the inner side of the waterproof inner sheath (2), the multiple braided copper wires (4) are sleeved on the inner side of the shielding braided mesh (3), the shock absorbing portion (6) is rotatably connected to one side of the silicon steel magnetic shielding disk (5), and the limiting portion (7) is fixedly connected to the opposite inner side of the shock absorbing portion (6); The silicon steel magnetic shielding disk (5) is based on the refraction of magnetic flux lines and the magnetic path shunting and guides the magnetic flux lines to bypass specific areas of the motor stator. The protective core (1) is used to protect the multi-braided copper wires (4) and prevent mechanical damage. The waterproof inner sheath (2) is used to waterproof the outside of the shielding braided mesh (3). The shielding braided mesh (3) is used to shield low-frequency electromagnetic wave interference and reduce the error rate. The multi-braided copper wire (4) is twisted into copper wire by multiple fine copper wires and is used to increase the overall flexibility and mechanical strength of the copper wire. The shock absorbing part (6) is used to reduce the vibration amplitude of the motor operation and prevent electromagnetic harmonics. The limiting part (7) is used to strengthen the connection stability between the silicon steel magnetic shielding disk (5) and the motor rotor.

2. The ultra-high voltage multi-layer enameled wire according to claim 1, characterized in that: The shock absorbing part (6) comprises a circular insert ring (61), a square block (62), a magnet sheet (63), a mass block (64), a connecting strip (65), a hollow column (66) and an air chamber damping rod (67); the circular insert ring (61) is rotatably connected to the inner side of the silicon steel magnetic shielding disk (5); the square block (62) is fixedly connected to the inner side of the circular insert ring (61); the outer side of the magnet sheet (63) is attracted to the surface of the motor stator; the mass block (64) is fixedly connected to one side of the magnet sheet (63); the two ends of the connecting strip (65) are respectively fixedly connected to the opposite side surfaces of the mass block (64) and the hollow column (66); one side of the hollow column (66) is fixedly connected to the surface of the square block (62); and the air chamber damping rod (67) is installed inside the hollow column (66).

3. The ultra-high voltage multi-layer enameled wire according to claim 1, characterized in that: The limiting portion (7) comprises a square bracket (71), a compression spring (72) and a fitting sheet (73); the square bracket (71) is fixedly connected to the inner side of the circular insert ring (61); the fitting sheet (73) is slidably connected to the inner side of the square bracket (71); the outer side of the fitting sheet (73) fits with the surface of the motor rotor; and the two sides of the compression spring (72) are respectively fixedly connected to the opposite side surfaces of the square bracket (71) and the fitting sheet (73).

4. The ultra-high voltage multi-layer enameled wire according to claim 2, characterized in that: A limit spring (8), a fixing rod (9) and a push plate (10) are also arranged inside the hollow column (66); the limit spring (8) is sleeved on the outside of the air chamber damping rod (67); one end of the fixing rod (9) is fixedly connected to the surface of the connecting strip (65); and both sides of the push plate (10) are respectively in contact with the opposite side surfaces of the air chamber damping rod (67) and the fixing rod (9).

5. The ultra-high voltage multi-layer enameled wire according to claim 1, characterized in that: The outer surface of the silicon steel magnetic shielding disk (5) is also provided with key slots (11) of equal size, and the key slots (11) are arranged in an annular array on the outer side of the silicon steel magnetic shielding disk (5).

6. The ultra-high voltage multi-layer enameled wire according to claim 1, characterized in that: The outer side of the protective core (1) is also coated with a wear-resistant surface layer (12).

7. The ultra-high voltage multi-layer enameled wire according to claim 6, characterized in that: A U-shaped spring sheet (13) is also provided on the inner side of the protective core (1), and the top bending part of the U-shaped spring sheet (13) is in contact with the inner surface of the protective core (1).

8. The ultra-high voltage multi-layer enameled wire according to claim 1, characterized in that: The thickness of the waterproof inner sheath (2) is ≤0.01 mm, and the waterproof inner sheath (2) is used for sealing and isolating and preventing fluid penetration.

9. The ultra-high voltage multi-layer enameled wire according to claim 1, characterized in that: The thickness of the shielding braided mesh (3) is 0.02 mm-0.04 mm, and the shielding braided mesh (3) is used to shield electromagnetic wave interference.

10. The ultra-high voltage multi-layer enameled wire according to claim 2, characterized in that: The shock absorbing parts (6) are provided in a plurality of groups, and the plurality of groups of shock absorbing parts (6) are symmetrically distributed on the inner side of the silicon steel magnetic shielding disk (5).

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