Bearing pressing device of external rotor motor

Abstract

The invention discloses a bearing pressing device for an external rotor motor, and relates to the technical field of external rotor motors, and the bearing pressing device comprises a bottom plate, and the bottom of the bottom plate is provided with a plurality of supporting legs; a first baffle is arranged at one end of the bottom plate, a first ejector rod penetrates through the first baffle, a second baffle is arranged in the middle of the bottom plate, and a second ejector rod penetrates through the second baffle; the first ejector rod and the second ejector rod are correspondingly arranged, a first bearing pressing sleeve is arranged at one end of the first ejector rod, and a second bearing pressing sleeve is arranged at one end of the second ejector rod; a driving device is arranged at the end, away from the first baffle, of the bottom plate. Through holes are formed along the central axis of the first ejector rod and the central axis of the second ejector rod respectively; a transverse moving supporting assembly is arranged on the bottom plate and located between the first baffle and the second baffle. The device improves the installation accuracy and efficiency of the stator bearing of the external rotor motor, prevents the outgoing line from being damaged, and guarantees the safety and service life of the outgoing line when the stator bearing is pressed.

Description

Technical Field

[0001] The invention belongs to the technical field of outer rotor motors, in particular to an outer rotor motor bearing pressure device. Background Art

[0002] In the production process of outer rotor motors for urban rail vehicles, the research and development, production and assembly accuracy of outer rotor motors are of great significance to the replacement and upgrading of rail transit motors; in the stator bearing press-fitting process of outer rotor motors, the stator bearing press-fitting process accuracy requirements must be met to improve product quality.

[0003] In the related art, the external rotor motor bearing pressing process uses manual shrink fit, which heats the bearing to expand it so that it can be fastened in the motor housing after cooling and shrinking, ensuring a close fit between the bearing and the motor housing, reducing the assembly gap, and improving the positioning accuracy of the bearing. However, the shrink fit method has very high requirements for temperature control and manual operation during the pressing process, which can easily cause uneven bearing assembly surfaces during the pressing process, and cause motor noise quality problems during the motor test process; and during the pressing process, the lead wires in the stator bearing cannot be inserted in advance, which can easily cause damage to the lead wires and affect the normal operation of the motor. Summary of the invention

[0004] An object of the present invention is to provide a pressure bearing device for an outer rotor motor to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] Specifically, the present invention discloses an outer rotor motor bearing pressure device, comprising:

[0006] A base plate, wherein a plurality of supporting legs are arranged at the bottom of the base plate;

[0007] A first baffle is provided at one end of the bottom plate, a first push rod is provided through the first baffle, a second baffle is provided in the middle of the bottom plate, a second push rod is provided through the second baffle;

[0008] The first push rod and the second push rod are arranged correspondingly, one end of the first push rod is provided with a first bearing sleeve, and one end of the second push rod is provided with a second bearing sleeve;

[0009] A driving device is provided at one end of the bottom plate away from the first baffle, and a transmission shaft is provided at one end of the driving device;

[0010] Perforations are respectively provided along the central axes of the first push rod and the second push rod;

[0011] A transverse support assembly is arranged on the bottom plate between the first baffle plate and the second baffle plate.

[0012] The outer rotor motor pressure bearing device according to the present invention has at least the following beneficial effects:

[0013] The outer rotor motor bearing pressing device of the present invention comprises a first push rod and a second push rod correspondingly arranged on the first baffle plate and the second baffle plate, and the stator of the outer rotor motor that needs to be subjected to bearing pressing is placed on the transverse support assembly; the pre-installed bearing at one end of the stator is positioned by the first push rod, and the transmission shaft of the driving device is used to apply a lateral transmission force to the second push rod, so that the second push rod is pushed toward the pre-installed bearing at the other end of the stator, and the second push rod is continuously moved in the direction of the first push rod, so that the same force is applied to the bearings at both ends of the stator, so that the bearings at both ends of the stator are uniformly and accurately pressed into the stator bearing block, avoiding installation errors caused by uneven force at both ends of the stator, resulting in abnormal noise of the motor during the test process of the outer rotor motor, effectively improving the accuracy and efficiency of the stator bearing installation of the outer rotor motor, meeting the requirements of the process accuracy of the stator bearing installation position, and ensuring the product quality of the outer rotor motor;

[0014] The present invention arranges a first bearing sleeve at one end of the first push rod and a second bearing sleeve at one end of the second push rod, both of which are made of elastic material, and the first push rod abuts against a pre-installed bearing at one end of the stator through the first bearing sleeve, and the second push rod abuts against a pre-installed bearing at the other end of the stator through the second bearing sleeve, which can effectively prevent the pre-installed bearings at both ends of the stator from being worn during press-fitting, thereby ensuring the reliability of press-fitting of the stator bearings of the outer rotor motor;

[0015] The present invention provides through holes along the central axis of the first push rod and the second push rod, respectively, so that the lead wires at both ends of the rotor can be effectively passed through the through holes of the first push rod and the second push rod. Compared with the traditional shrink-fit assembly method, the lead wires are easily squeezed and scratched, resulting in damage to the lead wires and affecting the normal operation of the motor. The present invention effectively avoids damage to the lead wires and ensures the safety and service life of the lead wires when the stator bearing is pressed.

[0016] As a further solution of the present invention: the transverse support assembly includes a transverse mechanism and a positioning seat arranged on the top of the transverse mechanism.

[0017] Since the transverse support assembly includes a transverse mechanism and a positioning seat arranged on the top of the transverse mechanism, the positioning seat can slide laterally along the transverse mechanism, and the top of the positioning seat is used to support the stator of the outer rotor motor, the positioning seat supporting the stator is moved on the transverse mechanism toward the first push rod, so that the pre-installed bearing at one end of the stator abuts against the first push rod, and the stator bearing can be effectively positioned by the first push rod to ensure that the position of the stator is accurate during the bearing pressing process, avoid the stator from being offset or tilted during the bearing pressing process, thereby ensuring the accuracy of the bearing installation.

[0018] As a further solution of the present invention: the transverse movement mechanism includes a guide rail, a slide groove is provided at the bottom of the positioning seat, and the positioning seat is slidably arranged on the guide rail through the slide groove.

[0019] Since the transverse movement mechanism includes a guide rail and a slide groove is provided at the bottom of the positioning seat, the positioning seat is slidably set on the guide rail through the slide groove, which can effectively prevent the positioning seat from shaking or deviating during the sliding process, improve the flatness of the assembly surface of the pre-installed bearings at both ends of the stator, ensure the precise positioning of the stator, and thus meet the requirements of the process accuracy of the stator bearing installation position.

[0020] As a further solution of the present invention: a groove is arranged on the top of the positioning seat.

[0021] Since a groove is provided on the top of the positioning seat, the stator is placed in the groove, and the movement of the stator can be effectively limited by the groove, which can further prevent the stator from shaking or deflecting during the sliding of the positioning seat on the guide rail, so that the stator can maintain a stable state during the bearing pressing process, ensuring the pressing accuracy of the pre-installed bearings at both ends of the stator, and effectively improving the stability and accuracy of the stator bearing pressing.

[0022] As a further solution of the present invention: a pressure plate is arranged on the outer side of the first baffle plate, a through hole is arranged in the middle of the pressure plate, and one end of the first push rod away from the second baffle plate extends to the outside of the pressure plate through the through hole of the pressure plate.

[0023] As a further solution of the present invention: the diameter of the through hole of the pressure plate is smaller than the diameter of the through hole of the first baffle.

[0024] By arranging a pressure plate on the outside of the first baffle plate and arranging a through hole in the middle of the pressure plate, one end of the first push rod away from the second baffle plate extends to the outside of the pressure plate through the through hole of the pressure plate, so that the first baffle plate, the first push rod and the pressure plate are interconnected as a whole, and the through hole diameter of the pressure plate is smaller than the through hole diameter of the first baffle plate, so that one end of the first push rod passes through the first baffle plate and is restricted by the pressure plate, which can effectively fix the first push rod to keep it stable. When the first push rod abuts against a bearing at one end of the stator, the first push rod can be prevented from lateral displacement, thereby ensuring the stable posture of the first push rod during the stator bearing pressing process, avoiding the generation of press-fitting errors, and effectively improving the accuracy and efficiency of the stator bearing pressing.

[0025] As a further solution of the present invention: a compression spring is provided at one end of the second push rod away from the first baffle.

[0026] Since a compression spring is provided at the end of the second push rod away from the first baffle, when the driving device is started and the transmission shaft is extended, the transmission shaft contacts the compression spring, and the second push rod is pushed to move in the direction of the transverse support assembly, so that the second push rod abuts against the pre-installed bearing at one end of the stator and generates a thrust. At the same time, under the reaction force, the first push rod generates the same thrust as the second push rod, and the pre-installed bearings at both ends of the stator are pressed into the bearing blocks of the stator; the compression spring can improve the buffering effect when pushing the second push rod, avoid the impact of the push of the second push rod on the stator bearing, thereby damaging the bearing, making the entire bearing pressing process smoother, and reducing the vibration and noise generated during the operation, effectively improving the operation stability and safety.

[0027] As a further solution of the present invention: the compression spring is configured to be cylindrical.

[0028] By setting the compression spring to be cylindrical, one end of the compression spring is matched with the transmission shaft of the driving device, which effectively increases the pushing area of ​​the compression spring, so that under the same pressure, the compression spring can provide a greater pushing force, so that the second push rod can more efficiently push the pre-installed bearing at one end of the stator, thereby improving operating efficiency; and the cylindrical compression spring can evenly distribute pressure when subjected to force, avoiding local stress concentration, reducing deformation and damage of the compression spring during long-term use, and increasing the service life of the compression spring.

[0029] As a further solution of the present invention: a cover plate is arranged at one end of the compression spring close to the transmission shaft, and a wear-resistant plate is arranged on the outer side of the cover plate.

[0030] By arranging a cover plate at one end of the compression spring close to the transmission shaft, and arranging a wear-resistant plate on the outside of the cover plate, the transmission shaft pushes the compression spring through the cover plate, which can effectively reduce the friction and wear between the compression spring and the transmission shaft, and the wear-resistant plate can prevent the compression spring from sliding with the transmission shaft during the process of pushing the second push rod to move laterally, thereby avoiding the deviation of the second push rod, thereby improving the stability and reliability of the entire transmission process and ensuring the pressing accuracy of the pre-installed bearings at both ends of the stator.

[0031] As a further solution of the present invention: the plurality of support legs are all configured to be cylindrical.

[0032] Since the plurality of support legs are all configured in a cylindrical shape, the cylindrical support legs can increase the support area between the bottom and the ground, so that the device can maintain its own stability during operation, reduce vibration and shaking, make the stator bearing pressure process smoother, and improve the stability and reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of a pressure bearing device for an outer rotor motor;

[0035] Figure 2 It is a schematic diagram of the main structure of a pressure bearing device for an outer rotor motor;

[0036] Figure 3 The present invention is a top view structural diagram of a pressure bearing device for an outer rotor motor.

[0037] Reference numerals:

[0038] 1. Bottom plate; 2. Support leg; 3. First baffle; 4. First push rod; 401. First bearing sleeve; 5. Second baffle; 6. Second push rod; 601. Second bearing sleeve; 7. Driving device; 701. Transmission shaft; 8. Transverse movement mechanism; 801. Guide rail; 9. Positioning seat; 901. Slide groove; 902. Groove; 10. Press plate; 11. Compression spring; 12. Cover plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the technical solution of the present invention is further specifically described below by way of examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0040] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0041] like Figure 1-3 The embodiment of the present invention shown is an outer rotor motor bearing pressure device, comprising: a base plate 1, a plurality of support legs 2 are arranged at the bottom of the base plate 1; a first baffle plate 3 is arranged at one end of the base plate 1, and a first push rod 4 is arranged through the first baffle plate 3, a second baffle plate 5 is arranged in the middle of the base plate 1, and a second push rod 6 is arranged through the second baffle plate 5; the first push rod 4 and the second push rod 6 are arranged correspondingly, a first bearing sleeve 401 is arranged at one end of the first push rod 4, and a second bearing sleeve 601 is arranged at one end of the second push rod 6; a driving device 7 is arranged at one end of the base plate 1 away from the first baffle plate 3, and a transmission shaft 701 is arranged at one end of the driving device 7; through holes are arranged along the central axis of the first push rod 4 and the second push rod 6 respectively; a transverse support assembly is arranged on the base plate 1 between the first baffle plate 3 and the second baffle plate 5.

[0042] Specifically, the outer rotor motor bearing pressing device of the present invention is provided with a first push rod 4 and a second push rod 6 correspondingly arranged on the first baffle plate 3 and the second baffle plate 5, and the stator of the outer rotor motor that needs to be subjected to bearing pressing is placed on the transverse support assembly; the pre-installed bearing at one end of the stator is positioned by the first push rod 4, and the transmission shaft 700 of the driving device 7 is used to apply a lateral transmission force to the second push rod 6, so that the second push rod 6 is pushed toward the pre-installed bearing at the other end of the stator, and the second push rod 6 is continuously moved toward the first push rod 4, so that the same force is applied to the bearings at both ends of the stator, so that the bearings at both ends of the stator are uniformly and accurately pressed into the stator bearing block, avoiding installation errors caused by uneven force at both ends of the stator, resulting in abnormal noise of the motor during the test process of the outer rotor motor, effectively improving the accuracy and efficiency of the stator bearing installation of the outer rotor motor, meeting the requirements of the process accuracy of the stator bearing installation position, and ensuring the product quality of the outer rotor motor;

[0043] The present invention arranges a first bearing sleeve 401 at one end of the first push rod 4, and arranges a second bearing sleeve 601 at one end of the second push rod 6. The first bearing sleeve 401 and the second bearing sleeve 601 are both made of elastic material. The first push rod 4 abuts against the pre-installed bearing at one end of the stator through the first bearing sleeve 401, and the second push rod 6 abuts against the pre-installed bearing at the other end of the stator through the second bearing sleeve 601. This can effectively prevent the bearings at both ends of the stator from being worn during press-fitting, thereby ensuring the reliability of the press-fitting of the stator bearings of the outer rotor motor.

[0044] The present invention provides through holes along the central axis of the first push rod 4 and the second push rod 6, respectively, so that the lead wires at both ends of the rotor can be effectively passed through the through holes of the first push rod 4 and the second push rod 6. Compared with the traditional shrink-fit assembly method, the lead wires are easily squeezed and scratched, resulting in damage to the lead wires and affecting the normal operation of the motor. The present invention effectively avoids damage to the lead wires and ensures the safety and service life of the lead wires when the stator bearing is pressed.

[0045] Furthermore, the transverse support assembly includes a transverse mechanism 8 and a positioning seat 9 arranged on the top of the transverse mechanism 8.

[0046] Specifically, since the transverse support assembly includes a transverse mechanism 8 and a positioning seat 9 arranged on the top of the transverse mechanism 8, the positioning seat 9 can slide laterally along the transverse mechanism 8, and the top of the positioning seat 9 is used to support the stator of the outer rotor motor, the positioning seat 9 supporting the stator is moved on the transverse mechanism 8 toward the first push rod 4, so that the pre-installed bearing at one end of the stator abuts against the first push rod 4. The stator bearing can be effectively positioned through the first push rod 4 to ensure that the position of the stator is accurate during the bearing pressing process, avoid the stator from being offset or tilted during the bearing pressing process, and thus ensure the accuracy of the bearing installation.

[0047] Furthermore, if Figure 1 and Figure 2 As shown, the transverse movement mechanism 8 includes a guide rail 801 , a slide groove 901 is provided at the bottom of the positioning seat 9 , and the positioning seat 9 is slidably arranged on the guide rail 801 through the slide groove 901 .

[0048] Specifically, since the transverse movement mechanism 8 includes a guide rail 801 and a slide groove 901 is provided at the bottom of the positioning seat 9, the positioning seat 9 is slidably set on the guide rail 801 through the slide groove 901, which can effectively prevent the positioning seat 9 from shaking or deflecting during the sliding process, improve the flatness of the pre-installed bearing assembly surface at both ends of the stator, ensure the precise positioning of the stator, and thus meet the requirements of the process accuracy of the stator bearing installation position.

[0049] Furthermore, if Figure 1 As shown, a groove 902 is provided on the top of the positioning seat 9.

[0050] Specifically, since a groove 902 is provided on the top of the positioning seat 9, the stator is placed in the groove 902. The movement of the stator can be effectively limited by the groove 902, and the stator can be further prevented from shaking or shifting during the sliding of the positioning seat 9 on the guide rail 801, so that the stator can maintain a stable state during the bearing pressing process, ensuring the pressing accuracy of the pre-installed bearings at both ends of the stator, and effectively improving the stability and accuracy of the stator bearing pressing.

[0051] According to an embodiment of the present invention, Figure 1-3 As shown, a pressure plate 10 is arranged outside the first baffle plate 3, a through hole is arranged in the middle of the pressure plate 10, and one end of the first push rod 4 away from the second baffle plate 5 extends to the outside of the pressure plate 10 through the through hole of the pressure plate 10; the diameter of the through hole of the pressure plate 10 is smaller than the diameter of the through hole of the first baffle plate 3.

[0052] Specifically, a pressure plate 10 is arranged on the outside of the first baffle plate 3, and a through hole is arranged in the middle of the pressure plate 10. One end of the first push rod 4 away from the second baffle plate 5 extends to the outside of the pressure plate 10 through the through hole of the pressure plate 10, so that the first baffle plate 3, the first push rod 4 and the pressure plate 10 are connected to each other as a whole, and the through hole diameter of the pressure plate 10 is smaller than the through hole diameter of the first baffle plate 3, so that one end of the first push rod 4 passes through the first baffle plate 3 and is restricted by the pressure plate 10, which can effectively fix the first push rod 4 and keep it stable. When the first push rod 4 abuts against the bearing at one end of the stator, the first push rod 4 can be prevented from lateral displacement, thereby ensuring the stable posture of the first push rod 4 during the stator bearing pressing process, avoiding the generation of press-fitting errors, and effectively improving the accuracy and efficiency of the stator bearing pressing.

[0053] According to an embodiment of the present invention, Figure 1-3 As shown, a compression spring 11 is provided at one end of the second push rod 6 away from the first baffle 3 .

[0054] Specifically, since a compression spring 11 is provided at one end of the second push rod 6 away from the first baffle 3, when the driving device 7 is started and the transmission shaft 701 is extended, the transmission shaft 701 contacts the compression spring 11, and the second push rod 6 is pushed to move in the direction of the transverse support assembly, so that the second push rod 6 abuts against the pre-installed bearing at one end of the stator and generates a thrust. At the same time, under the reaction force, the first push rod 4 generates the same thrust as the second push rod 6, and presses the pre-installed bearings at both ends of the stator into the bearing block of the stator; the compression spring 11 can improve the buffering effect when pushing the second push rod 6, avoid the push of the second push rod 6 to cause impact on the stator bearing, thereby damaging the bearing, making the entire bearing pressing process smoother, and reducing the vibration and noise generated during operation, effectively improving the operational stability and safety.

[0055] Furthermore, the compression spring 11 is configured to be cylindrical.

[0056] Specifically, by setting the compression spring 11 to be cylindrical, one end of the compression spring 11 is matched with the transmission shaft 701 of the drive device 7, which effectively increases the pushing area of ​​the compression spring 11, so that under the same pressure, the compression spring 11 can provide a greater pushing force, so that the second push rod 6 can more efficiently push the pre-installed bearing at one end of the stator, thereby improving the operating efficiency; and the cylindrical compression spring 11 can evenly distribute the pressure when subjected to force, avoiding local stress concentration, reducing the deformation and damage of the compression spring 11 during long-term use, and improving the service life of the compression spring 11.

[0057] Furthermore, a cover plate 12 is provided at one end of the compression spring 11 close to the transmission shaft 701 , and a wear-resistant plate is provided on the outer side of the cover plate 12 .

[0058] Specifically, a cover plate 12 is provided at one end of the compression spring 11 close to the transmission shaft 701, and a wear-resistant plate is provided on the outer side of the cover plate 12, so that the transmission shaft 701 pushes the compression spring 11 through the cover plate 12, which can effectively reduce the friction and wear between the compression spring 11 and the transmission shaft 701, and the wear-resistant plate can prevent the compression spring 11 from sliding with the transmission shaft 701 during the process of pushing the second push rod 6 to move horizontally, thereby avoiding the deviation of the second push rod 6, thereby improving the stability and reliability of the entire transmission process and ensuring the pressing accuracy of the pre-installed bearings at both ends of the stator.

[0059] According to an embodiment of the present invention, Figure 1 As shown, the plurality of supporting legs 2 are all configured to be cylindrical.

[0060] Specifically, since the plurality of support legs 2 are all configured to be cylindrical, the cylindrical support legs 2 can increase the support area between the bottom and the ground, allowing the device to maintain its own stability during operation, reduce vibration and shaking, make the stator bearing pressure process smoother, and improve the stability and reliability of the operation.

[0061] When the present invention is in use, bearings are pre-installed at both ends of the stator, and the stator is placed in the groove 902 of the positioning seat 9. The positioning seat 9 moves horizontally on the guide rail 801, so that the pre-installed bearing at one end of the stator abuts against the first push rod 4, and the pre-installed bearing at one end of the stator is positioned and limited by the first baffle plate 3, the pressure plate 10 and the first push rod 4; at this time, the driving device 7 is started, and the transmission shaft 701 of the driving device 7 is pushed toward the second push rod 6 and contacts with the compression spring 11, and the second push rod 6 is driven to move horizontally toward the stator by pushing the compression spring 11. When the second push rod 6 contacts and pushes the pre-installed bearing at the other end of the stator, the first push rod 4 generates an equal force as the second push rod 6 due to the reaction force, and the pre-installed bearings at both ends of the stator are pressed into the bearing block, thereby completing the stator bearing press-fitting of the outer rotor motor.

[0062] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An outer rotor motor bearing device, characterized in that: include: A base plate (1), wherein a plurality of supporting legs (2) are arranged at the bottom of the base plate (1); A first baffle (3) is provided at one end of the bottom plate (1), a first push rod (4) is provided through the first baffle (3), a second baffle (5) is provided in the middle of the bottom plate (1), a second push rod (6) is provided through the second baffle (5); The first push rod (4) and the second push rod (6) are arranged correspondingly, one end of the first push rod (4) is provided with a first bearing sleeve (401), and one end of the second push rod (6) is provided with a second bearing sleeve (601); A driving device (7) is provided at one end of the bottom plate (1) away from the first baffle (3), and a transmission shaft (701) is provided at one end of the driving device (7); Perforations are respectively provided along the central axes of the first push rod (4) and the second push rod (6); A transverse support assembly is provided on the bottom plate (1) between the first baffle plate (3) and the second baffle plate (5).

2. The outer rotor motor pressure bearing device according to claim 1, characterized in that: The transverse movement support assembly comprises a transverse movement mechanism (8) and a positioning seat (9) arranged on the top of the transverse movement mechanism (8).

3. The outer rotor motor pressure bearing device according to claim 2, characterized in that: The transverse movement mechanism (8) comprises a guide rail (801), a slide groove (901) is arranged at the bottom of the positioning seat (9), and the positioning seat (9) is slidably arranged on the guide rail (801) through the slide groove (901).

4. The outer rotor motor pressure bearing device according to claim 3, characterized in that: The top of the positioning seat (9) is provided with a groove (902).

5. The outer rotor motor pressure bearing device according to claim 1, characterized in that: A pressure plate (10) is arranged outside the first baffle plate (3), a through hole is arranged in the middle of the pressure plate (10), and one end of the first push rod (4) away from the second baffle plate (5) extends to the outside of the pressure plate (10) through the through hole of the pressure plate (10).

6. The outer rotor motor pressure bearing device according to claim 5, characterized in that: The diameter of the through hole of the pressing plate (10) is smaller than the diameter of the through hole of the first baffle plate (3).

7. The outer rotor motor pressure bearing device according to claim 1, characterized in that: A compression spring (11) is provided at one end of the second push rod (6) away from the first baffle (3).

8. The outer rotor motor pressure bearing device according to claim 7, characterized in that: The compression spring (11) is configured to be cylindrical.

9. The outer rotor motor pressure bearing device according to claim 8, characterized in that: A cover plate (12) is provided at one end of the compression spring (11) close to the transmission shaft (701), and a wear-resistant plate is provided on the outer side of the cover plate (12).

10. The outer rotor motor pressure bearing device according to any one of claims 1 to 9, characterized in that: The plurality of support legs (2) are all arranged in a cylindrical shape.

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