Combined support device for fixing the end connection wires of the poles of a rotor of a salient-pole electric machine

Abstract

The application is suitable for fixing the combination support device of the rotor pole end connection line of the salient pole motor, belongs to the field of motor manufacturing, and solves the problem of overheating and burning of the insulation of the connection part due to the loose connection or insufficient contact area of the existing pole lead and the inter-pole connection line. The combination support device comprises an inner support ring, an outer support ring, an inner support ring insulation belt, two outer support ring insulation belts and a plurality of half keys. The inner support ring is arranged on the outgoing line end side of the rotor pole, and is detachably connected with the rotating shaft through a plurality of full keys. The outer support ring is sleeved on the outer circular surface of the inner support ring. The inner support ring insulation belt is arranged between the outer support ring and the inner support ring, and the outer support ring is detachably connected with the inner support ring through a plurality of half keys. The two outer support ring insulation belts are arranged on the outer circular surface of the outer support ring, and each outer support ring insulation belt is fixedly connected with the outer support ring. The application is mainly used for packaging and protecting the rotor pole end connection line.

Description

Technical Field

[0001] This invention belongs to the field of motor manufacturing, and specifically relates to a combined support device suitable for connecting wires at the magnetic end of a fixed salient pole motor rotor. Background Technology

[0002] The pole-to-pole connecting wires are a critical component of the motor rotor. Due to the complex operating conditions and frequent changes in operating conditions, the pole leads and connecting wires are subjected to centrifugal force, electromagnetic force, and thermal stress. Under these forces, issues such as loosening of the connecting bolts, insufficient joint pressure, insufficient actual contact area between the pole leads and connecting wires, or burrs, unevenness, wear, or deformation of the joint contact surface can lead to an excessively small contact area. All of these factors can ultimately result in poor contact or even breakage of the connecting wires, causing overheating of the connecting wire joints, insulation damage leading to rotor grounding, sudden changes in excitation current generating uneven magnetic fields, and ultimately, motor malfunctions. To avoid these situations and ensure the static and dynamic safety and stability of the pole leads and connecting wires, it is necessary to eliminate the connecting bolts at the contact surface of the pole leads and connecting wires, and avoid unsupported, suspended pole leads and connecting wires. To provide reliable support for the pole leads and connecting wires, a combined support device suitable for fixing the connecting wires at the pole ends of a salient-pole motor rotor needs to be developed. Summary of the Invention

[0003] In order to solve the problem that the connection between the magnetic pole lead and the inter-pole connecting wire is overheated and burns the insulation or the lead and connecting wire is deformed or even broken due to excessive stress caused by loose connection or insufficient contact area, the present invention provides a combined support device suitable for fixing the connecting wire of the magnetic end of the rotor of a salient pole motor.

[0004] A combined support device for fixing the connecting wires at the ends of the rotor magnetic poles of a salient-pole motor is disclosed. The combined support device includes an inner support ring, an outer support ring, an inner support ring insulating strip, two outer support ring insulating strips, and multiple half-keys. The inner support ring is disposed on the output end side of the rotor magnetic pole and is sleeved on the outer circumferential surface of the rotating shaft. The inner support ring is detachably connected to the rotating shaft via multiple full keys. The outer support ring is sleeved on the outer circumferential surface of the inner support ring. The inner support ring insulating strip is disposed between the outer support ring and the inner support ring and is detachably connected to the inner support ring via multiple half-keys. Both outer support ring insulating strips are disposed on the outer circumferential surface of the outer support ring and are fixedly connected to the outer support ring.

[0005] Furthermore, two side vertical grooves are machined on the inner support ring near the output end of the rotor magnetic pole. One of the two side vertical grooves is provided with the main inlet wire, and the other side vertical groove is provided with the main outlet wire.

[0006] Furthermore, the inner ring wall of the inner support ring is machined with multiple first-order full keyways at equal intervals along the circumference, and the outer circular surface of the rotating shaft is machined with multiple second-order full keyways at equal intervals along the circumference. Each first-order full keyway is correspondingly set with one second-order full keyway, and each full keyway is correspondingly set in a cavity composed of a first-order full keyway and a second-order full keyway.

[0007] Furthermore, a shallow annular groove is machined on the outer circular surface of the inner support ring near the output end of the rotor magnetic pole, and the insulating tape of the inner support ring is wound in the shallow annular groove. Multiple first-order semi-keyways are machined at equal intervals along the circumference on the outer circular surface of the inner support ring away from the rotor magnetic pole. Multiple second-order semi-keyways are machined at equal intervals along the circumference on the inner ring wall of the outer support ring, and each first-order semi-keyway is correspondingly set with one second-order semi-keyway. Each semi-key is correspondingly set in the cavity formed by one first-order semi-keyway and one second-order semi-keyway.

[0008] Furthermore, the inner support ring has multiple lower lead wire grooves machined circumferentially at equal intervals on the edge near the rotor magnetic pole output end. Each lower lead wire groove is provided with a first pole connecting wire, which is used to connect the lower lead wires of two adjacent rotor magnetic poles.

[0009] Furthermore, the outer support ring has multiple upper lead wire grooves machined at equal intervals along the circumference on the edge near the rotor magnetic pole output end. Each upper lead wire groove is provided with a second pole connecting wire, which is used to connect the upper lead wires of two adjacent rotor magnetic poles.

[0010] Furthermore, two deep annular grooves are symmetrically machined on the outer circumference of the outer support ring along the centerline of the outer support ring thickness direction, and each outer support ring insulating tape is wound in one of the deep annular grooves:

[0011] Furthermore, the outer sides of the first inter-pole connecting wire and the two connected lower leads are all wrapped with a lead insulation layer, and the outer sides of the second inter-pole connecting wire and the two connected upper leads are all wrapped with a lead insulation layer.

[0012] Furthermore, the remaining space in the upper lead-out groove and the remaining space in the lower lead-out groove are both filled with thermally expanding glass mat.

[0013] Furthermore, the inner support ring, outer support ring, half bond, and full bond are all made of non-magnetic metal materials, and the inner support ring insulating strip, outer support ring insulating strip, lead wire insulating layer, and thermally expandable glass felt are made of insulating materials.

[0014] The beneficial effects of this application compared to the prior art are:

[0015] 1. The present invention provides a combined support device for connecting wires at the rotor magnetic end of a fixed salient pole motor. The combined support device consists of an inner support ring, an outer support ring, an inner support ring insulation strip, an outer support ring insulation strip, a half key, a full key, lead wire insulation, and thermally expandable glass felt. This device protects the connecting wires at the rotor magnetic end of the motor, eliminating the need for connecting bolts to hold the connecting wires together in conventional motors. By encapsulating the connecting wires within the combined support device, the invention not only optimizes the structural layout of the motor end, increases the strength of the connecting wires at the rotor magnetic end, and enhances the stability of motor operation, but also effectively prevents high-speed rotating components such as connecting bolts and connecting wires from flying out and damaging other parts of the motor.

[0016] 2. The present invention provides a combined support device suitable for fixing the connecting wires of the rotor magnetic pole end of a salient pole motor. The inner support ring, the outer support ring, and the rotating shaft are fastened into a whole by full keys and half keys, which facilitates the assembly and disassembly of the combined support device. All connecting wires of the rotor magnetic pole end are encapsulated in the combined support device, which effectively prevents dust, carbon powder, oil mist and other contaminants in the air from adhering to the rotor magnetic pole connecting wires, avoids the increase in electrical density and temperature of the connecting wires caused by contaminants, and also prevents damage to the connecting wires of the rotor magnetic pole end from other internal components of the motor.

[0017] 3. The present invention provides a combined support device for connecting wires at the rotor magnetic end of a fixed salient pole motor. This device effectively encapsulates the connecting wires at the rotor magnetic end, ensuring the static and dynamic safety and stability of the connecting wires. It secures the connecting wires within the external grooves of the inner and outer support rings, guaranteeing reliable support for the connecting wires at the rotor magnetic end. This effectively avoids the problem of overheating and insulation burnout at the connection point caused by loose connections or insufficient contact area between existing magnetic pole leads and inter-pole connecting wires. It also effectively prevents motor grounding faults caused by deformation or even breakage of the leads and connecting wires due to stress. The device has the advantages of simple and robust structure, convenient assembly and disassembly, and stable and reliable operation. Attached Figure Description

[0018] Figure 1 This is an axonometric schematic diagram of the combined support device described in this application;

[0019] Figure 2 This is an axial cross-sectional view of the rotor assembly of the combined support device described in this application;

[0020] Figure 3 This is a top view of the rotor assembly of the combined support device described in this application;

[0021] Figure 4 for Figure 3 A schematic diagram of direction AA;

[0022] Figure 5 This is a schematic diagram of the inner support ring in the combined support device described in this application;

[0023] Figure 6 This is a schematic diagram of the outer support ring in the combined support device described in this application;

[0024] Figure 7 This is a cross-sectional view of the rotor assembly of the combined support device described in this application;

[0025] Figure 8 Diagram showing the direction of excitation current flow to the rotor poles;

[0026] In the figure, 1 is the inner support ring, 2 is the outer support ring, 3 is the inner support ring insulation strip, 4 is the outer support ring insulation strip, 5 is the half key, 6 is the full key, 7 is the lead wire insulation layer, 8 is the thermally expandable glass felt, 9 is the rotor pole, 10 is the main inlet wire, 11 is the side vertical groove, 12 is the upper lead wire, 13 is the upper lead wire groove, 14 is the shaft, 15 is the lower lead wire, 16 is the lower lead wire groove, 17 is the main outlet wire, 18 is the shallow annular groove and 19 is the deep annular groove. Detailed Implementation

[0027] Specific implementation method one: Combining Figures 1 to 8 This embodiment provides a combined support device suitable for fixing the connecting wires of the rotor magnetic pole ends of a salient pole motor. The combined support device includes an inner support ring 1, an outer support ring 2, an inner support ring insulating strip 3, two outer support ring insulating strips 4, and multiple half-keys 5. The inner support ring 1 is disposed on the output end side of the rotor magnetic pole 9 and is sleeved on the outer circumferential surface of the rotating shaft 14. The inner support ring 1 is detachably connected to the rotating shaft 14 via multiple full keys 6. The outer support ring 2 is sleeved on the outer circumferential surface of the inner support ring 1. The inner support ring insulating strip 3 is disposed between the outer support ring 2 and the inner support ring 1, and the outer support ring 2 is detachably connected to the inner support ring 1 via multiple half-keys 5. Both outer support ring insulating strips 4 are disposed on the outer circumferential surface of the outer support ring 2, and each outer support ring insulating strip 4 is fixedly connected to the outer support ring 2.

[0028] In this embodiment, multiple rotor magnetic poles 9 are equidistantly mounted on the outer circular surface of the rotating shaft 14 along the circumference of the shaft 14. A combined support device is set on the output end side of the multiple rotor magnetic poles 9, and the distance between the combined support device and the end of each rotor magnetic pole 9 is equal, which is 5mm. The outer diameter of the inner support ring 1 is the same as the inner diameter of the outer support ring 2. The radial maximum point of the lower lead wire 15 in the rotor magnetic pole 9 cannot be higher than the inner diameter of the insulating strip 3 of the inner support ring. The radial maximum point of the upper lead wire 12 in the rotor magnetic pole 9 cannot be higher than the inner diameter of the insulating strip 4 of the outer support ring. The outer diameter of the insulating strip 3 of the inner support ring is smaller than the outer diameter of the inner support ring 1, and the outer diameter of the insulating strip 4 of the outer support ring is smaller than the outer diameter of the outer support ring.

[0029] Specific Implementation Method Two: Combining Figures 1 to 8This embodiment differs from specific embodiment one in that the inner support ring 1 has two side vertical grooves 11 machined on the output end side near the rotor magnetic pole 9. One of the side vertical grooves 11 has a main inlet wire 10, and the other side vertical groove 11 has a main outlet wire 17. Other components and connection methods are the same as in specific embodiment one.

[0030] In this embodiment, the positional relationship between the two side vertical slots 11 is related to the number of rotor magnetic poles 9. If n rotor magnetic poles 9 are mounted on the rotating shaft 14, the included angle between the two side vertical slots 11 is 360° / n, and each side vertical slot 11 corresponds to one rotor magnetic pole 9. Figure 7 As shown, the two rotor poles 9 corresponding to the two side vertical slots 11 rotate clockwise. One corresponds to the initial rotor pole 9, which is connected to the main inlet line 10. The other corresponds to the last rotor pole 9, which is connected to the main outlet line 17. The central angle between the initial rotor pole 9 and the last rotor pole 9 is an obtuse angle.

[0031] Specific implementation method three: Combining Figures 1 to 8 This embodiment differs from Specific Embodiment Two in that the inner ring wall of the inner support ring 1 is equidistantly machined with multiple No. 1 full keyways along the circumferential direction, and the outer circular surface of the rotating shaft 14 is equidistantly machined with multiple No. 2 full keyways along the circumferential direction. Each No. 1 full keyway corresponds to one No. 2 full keyway, and each full key 6 is correspondingly disposed in the cavity formed by one No. 1 full keyway and one No. 2 full keyway. Other components and connection methods are the same as in Specific Embodiment Two.

[0032] Specific implementation method four: Combination Figures 1 to 8 This embodiment differs from Specific Embodiment Three in that a shallow annular groove 18 is machined on the outer circular surface of the inner support ring 1 near the output end of the rotor magnetic pole 9. The insulating tape 3 of the inner support ring is wound in the shallow annular groove 18. Multiple first-order semi-keyways are machined at equal intervals along the circumference on the outer circular surface of the inner support ring 1 away from the output end of the rotor magnetic pole 9. Multiple second-order semi-keyways are machined at equal intervals along the circumference on the inner ring wall of the outer support ring 2, with each first-order semi-keyway corresponding to one second-order semi-keyway. Each semi-key 5 is correspondingly located in the cavity formed by one first-order semi-keyway and one second-order semi-keyway. Other components and connection methods are the same as in Specific Embodiment Three.

[0033] Specific Implementation Method Five: Combining Figures 1 to 8This embodiment differs from Specific Embodiment Four in that the inner support ring 1 has multiple circumferentially spaced grooves 16 for lower lead wires on its edge near the output end of the rotor magnetic pole 9. Each groove 16 contains a first-pole connecting wire, which connects the lower lead wires 15 of two adjacent rotor magnetic poles 9. Other components and connection methods are the same as in Specific Embodiment Four.

[0034] In this embodiment, multiple lower lead wire grooves 16 are all located directly below the shallow annular groove 18. The lower lead wire 15 at the bottom of the rotor magnetic pole 9 is wrapped around the lead wire insulation layer 7 and then led out from the rotor magnetic pole 9. It is led straight out to the lower lead wire groove 16 on the outer surface of the inner support ring 1, which is 5mm away from the rotor magnetic pole 9, and connected to one end of the first pole connecting line wrapped around the lead wire insulation layer 7. The other end of the first pole connecting line wrapped around the lead wire insulation layer 7 is connected to the lower lead wire 15 wrapped around the lead wire insulation layer 7 in the rotor magnetic pole 9 that is adjacent in a clockwise direction.

[0035] Specific Implementation Method Six: Combination Figures 1 to 8 This embodiment differs from specific embodiment five in that the outer support ring 2 has multiple upper lead-out grooves 13 machined circumferentially at equal intervals on its edge near the lead-out end of the rotor magnetic pole 9. Each upper lead-out groove 13 contains a second-pole connecting wire, which is used to connect the upper lead-out wires 12 of two adjacent rotor magnetic poles 9. Other components and connection methods are the same as in specific embodiment five.

[0036] In this embodiment, the upper lead wire 12 of the upper part of the rotor magnetic pole 9 is wrapped around the lead wire insulation layer 7 and then led out from the rotor magnetic pole 9. It is led straight out to the upper lead wire groove 13 on the outer surface of the outer support ring 2, which is 5mm away from the rotor magnetic pole 9, and connected to one end of the second pole connection wire wrapped around the lead wire insulation layer 7. The other end of the second pole connection wire wrapped around the lead wire insulation layer 7 is connected to the upper lead wire 12 wrapped around the lead wire insulation layer 7 in the rotor magnetic pole 9 that is adjacent in a clockwise direction.

[0037] Specific implementation method seven: Combination Figures 1 to 8 This embodiment differs from Specific Embodiment Six in that two deep annular grooves 19 are symmetrically machined on the outer circumference of the outer support ring 2 along the center line of the thickness direction of the outer support ring 2, and each outer support ring insulating tape 4 is wound in one deep annular groove 19. Other components and connection methods are the same as in Specific Embodiment Six.

[0038] In this embodiment, multiple upper lead-out grooves 13 are all located directly below the deep annular groove 19.

[0039] Specific implementation method eight: Combination Figures 1 to 8This embodiment differs from specific embodiment seven in that the outer sides of the first inter-pole connecting wire and the two connected lower leads 15 are both wrapped with lead insulation layer 7, and the outer sides of the second inter-pole connecting wire and the two connected upper leads 12 are also wrapped with lead insulation layer 7. Other components and connection methods are the same as in specific embodiment seven.

[0040] Specific Implementation Method Nine: Combining Figures 1 to 8 This embodiment differs from specific embodiment eight in that the remaining space in the upper lead-out groove 13 and the remaining space in the lower lead-out groove 16 are both filled with thermally expandable glass felt 8. Other components and connection methods are the same as in specific embodiment eight.

[0041] In this embodiment, thermally expandable glass mat 8 is filled in the remaining space in the upper lead wire groove 13 and the remaining space in the lower lead wire groove 16 to ensure the insulation of the upper lead wire groove 13 and the lower lead wire groove 16.

[0042] Specific Implementation Method Ten: Combining Figures 1 to 8 This embodiment differs from specific embodiment nine in that the inner support ring 1, outer support ring 2, half-bond 5, and full-bond 6 are all made of non-magnetic metal materials, while the inner support ring insulating strip 3, outer support ring insulating strip 4, lead wire insulating layer 7, and thermally expandable glass felt 8 are made of insulating materials. Other components and connection methods are the same as in specific embodiment nine.

[0043] The present invention has been disclosed above with preferred embodiments, but it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

[0044] Working principle

[0045] In use, the components are first assembled according to the connection relationships described in Embodiments 1 to 10. The excitation current flows into the initial rotor pole 9 through the main inlet line 10 passing through a side groove 11 near the output end of the rotor pole 9 in the inner support ring 1. Following the clockwise arrangement of the rotor poles 9, the upper lead wire 12 of the upper part of the rotor pole 9 is wrapped with the lead wire insulation layer 7 and then directly led out to the upper lead wire groove 13 on the outer surface of the outer support ring 2. It is connected to the upper lead wire 12 of the next rotor pole 9 through the second pole-to-pole connecting wire in the upper lead wire groove 13, and so on. The lower lead wire 15 is wrapped with the lead wire insulation layer 7 and then directly led out to the lower lead wire groove 16 on the outer surface of the inner support ring 1. It is connected to the next rotor pole 9 through the first pole-to-pole connecting wire in the lower lead wire groove 16. The lower lead wire 15 at the bottom of the sub-pole 9 is connected, and so on. The upper lead wire 12, lower lead wire 15, first pole connection wire and second pole connection wire are all connected through the rotor pole 9. Finally, the excitation current flows out from the last rotor pole 9 through the total lead wire 17 in the vertical groove 11 on the other side near the output end of the inner support ring 1. During this process, the remaining space in the upper lead wire groove 13 and the lower lead wire groove 16 is filled with thermally expandable glass felt 8. The inner support ring insulation tape 3 is wrapped in the shallow annular groove 18 on the outer surface of the inner support ring 1, and the outer support ring insulation tape 4 is wrapped in the deep annular groove 19 on the outer surface of the outer support ring 2 to ensure the insulation and sealing of the device and its reliability. The rotating shaft 14, the inner support ring 1, and the outer support ring 2 are connected together to form a whole by the full key 6 and the half key 5.

[0046] The excitation current output by the excitation system flows into the lower lead 12 of the initial rotor pole 9 through the main inlet line 10. After rotating clockwise, the excitation current flows out through the upper lead of the initial rotor pole 9, flows into the upper lead of the intermediate rotor pole 9 through the second pole connection line, and then flows out through the lower lead of the intermediate rotor pole 9 after rotating counterclockwise. It then flows into the lower lead of the next intermediate rotor pole 9 through the first pole connection line, and so on. Finally, the excitation current flows out from the lower lead of the last rotor pole 9 and exits the motor through the main outlet line 17.

Claims

1. A combined support device suitable for fixing the connecting wires at the ends of the rotor magnetic poles of a salient-pole motor, characterized in that: The combined support device includes an inner support ring (1), an outer support ring (2), an inner support ring insulating strip (3), two outer support ring insulating strips (4), and multiple half keys (5); the inner support ring (1) is located on the output end side of the rotor magnetic pole (9), and the inner support ring (1) is sleeved on the outer circular surface of the rotating shaft (14). The inner support ring (1) is detachably connected to the rotating shaft (14) through multiple full keys (6). The outer support ring (2) is sleeved on the outer circular surface of the inner support ring (1). The inner support ring insulating strip (3) is located between the outer support ring (2) and the inner support ring (1), and the outer support ring (2) is detachably connected to the inner support ring (1) through multiple half keys (5). The two outer support ring insulating strips (4) are both located on the outer circular surface of the outer support ring (2), and each outer support ring insulating strip (4) is fixedly connected to the outer support ring (2).

2. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient pole motor according to claim 1, characterized in that: The inner support ring (1) has two side vertical grooves (11) machined on the side near the output end of the rotor magnetic pole (9). One of the side vertical grooves (11) is provided with a main inlet (10), and the other side vertical groove (11) is provided with a main outlet (17).

3. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient-pole motor according to claim 2, characterized in that: The inner ring (1) has multiple first-order full keyways machined at equal intervals along the circumference on the inner ring wall, and the outer ring surface of the rotating shaft (14) has multiple second-order full keyways machined at equal intervals along the circumference. Each first-order full keyway is correspondingly set with one second-order full keyway, and each full key (6) is correspondingly set in a cavity composed of a first-order full keyway and a second-order full keyway.

4. The combined support device for connecting wires at the ends of fixed salient pole motor rotor magnetic poles according to claim 3, characterized in that: The inner support ring (1) has a shallow annular groove (18) machined on the outer circular surface near the output end of the rotor magnetic pole (9). The inner support ring insulation strip (3) is wrapped in the shallow annular groove (18). The inner support ring (1) has multiple first semi-keyways machined at equal intervals along the circumference on the outer circular surface away from the output end of the rotor magnetic pole (9). The outer support ring (2) has multiple second semi-keyways machined at equal intervals along the circumference on the inner ring wall. Each first semi-keyway is correspondingly set with one second semi-keyway. Each semi-key (5) is correspondingly set in the cavity composed of a first semi-keyway and a second semi-keyway.

5. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient-pole motor according to claim 4, characterized in that: The inner support ring (1) has multiple lower lead wire grooves (16) machined circumferentially at equal intervals on the edge near the lead wire end of the rotor magnetic pole (9). Each lower lead wire groove (16) is provided with a first pole connecting wire, which is used to connect the lower lead wires (15) of two adjacent rotor magnetic poles (9).

6. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient pole motor according to claim 5, characterized in that: The outer support ring (2) has multiple upper lead wire grooves (13) machined circumferentially at equal intervals on the edge near the rotor magnetic pole (9). Each upper lead wire groove (13) is provided with a second pole connecting wire, which is used to connect the upper lead wires (12) of two adjacent rotor magnetic poles (9).

7. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient-pole motor according to claim 6, characterized in that: Two deep annular grooves (19) are symmetrically machined on the outer circular surface of the outer support ring (2) along the center line of the thickness direction of the outer support ring (2), and each outer support ring insulating strip (4) is wound in a corresponding deep annular groove (19).

8. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient-pole motor according to claim 7, characterized in that: The outer sides of the first inter-pole connecting line and the two connected lower leads (15) are all wrapped with lead insulation layer (7), and the outer sides of the second inter-pole connecting line and the two connected upper leads (12) are all wrapped with lead insulation layer (7).

9. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient-pole motor according to claim 8, characterized in that: The remaining space in the upper lead-out groove (13) and the remaining space in the lower lead-out groove (16) are both filled with thermally expandable glass mat (8).

10. The combined support device for connecting wires at the ends of the rotor magnetic poles of a fixed salient-pole motor according to claim 9, characterized in that: The inner support ring (1), outer support ring (2), half bond (5) and full bond (6) are all made of non-magnetic metal material, and the inner support ring insulating strip (3), outer support ring insulating strip (4), lead wire insulating layer (7) and thermally expandable glass felt (8) are made of insulating material.

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