A double-stator alternating permanent-magnet disc-type motor with reduced axial magnetic pull

Abstract

The application relates to the technical field of disc type motors, and discloses a double-stator alternating permanent-magnetic disc type motor capable of reducing axial magnetic pull force, which comprises a motor shell, a rotating rod rotatably connected to the inside of the motor shell, a rotating shaft rotatably connected to the outside of the rotating rod, the outside of the rotating shaft being fixedly connected to the inside of the motor shell, a stator body fixedly connected to the inside of the motor shell, a rotor body rotatably connected to the inside of the stator body, the inside of the rotor body being arranged on the outside of the rotating rod, a floating support mechanism arranged in the inside of the rotating rod, one end of the floating support mechanism being arranged in the inside of the rotor body, and the floating support mechanism comprising a floating assembly and an auxiliary assembly I. When the rotor body is axially offset, the passive real-time dynamic balance effect can be achieved, the axial magnetic pull force during the operation of the double-stator alternating permanent-magnetic disc type motor is effectively reduced, and the stability and reliability of motor operation are improved.

Description

Technical Field

[0001] This invention relates to the field of disc motor technology, specifically to a dual-stator alternating permanent magnet disc motor that reduces axial magnetic pull. Background Technology

[0002] The dual-stator alternating permanent magnet disk motor, as a special disk motor topology, can effectively improve the air gap magnetic flux density and torque output capability by arranging permanent magnets and stators alternately on both sides of the rotor.

[0003] Existing design approaches for dual-stator alternating permanent magnet motors typically focus on optimizing the motor's static structure. These near-static design methods cannot cope with the real-time dynamic changes in axial magnetic pull under varying operating conditions, leading to a significant decrease in the motor's axial stability under complex operating conditions. Summary of the Invention

[0004] This invention provides a dual-stator alternating permanent magnet motor with reduced axial magnetic pull, which solves the problem that the existing dual-stator alternating permanent magnet motor design usually focuses on the static structure optimization of the motor, resulting in a significant decrease in the axial stability of the motor under complex working conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dual-stator alternating permanent magnet motor for reducing axial magnetic pull, comprising a motor housing, a rotating rod rotatably connected inside the motor housing, a rotating shaft rotatably connected outside the rotating rod, the rotating shaft being fixedly connected outside the motor housing, a stator body fixedly connected inside the motor housing, a rotor body rotatably connected inside the stator body, the rotor body being disposed outside the rotating rod, a floating support mechanism being disposed inside the rotating rod, one end of the floating support mechanism being disposed inside the rotor body, the floating support mechanism comprising a floating component and an auxiliary component, the floating component being slidably connected outside the rotating rod, the auxiliary component being disposed outside the floating component, the floating component comprising a sliding sleeve, one end of the sliding sleeve being slidably connected inside the rotating rod.

[0006] By adopting the above technical solution, the motor housing serves as the main protective and load-bearing base of the motor, providing a sealed installation space for the internal electromagnetic component floating support mechanism. It also has the functions of structural protection and heat dissipation, ensuring the stability of the structural reference for the overall operation of the motor. The rotating shaft is fixedly embedded inside the motor housing, forming a fixed reference for the slewing support. The rotating rod is rotatably connected inside the rotating shaft and fixedly connected to the rotor body to form a rotating output unit. When the stator body is energized, it generates an alternating magnetic field, which drives the rotor body to drive the rotating rod to rotate synchronously, realizing the stable conversion of electrical energy into mechanical energy.

[0007] Preferably, a disc spring is provided inside the sliding sleeve, the other end of the sliding sleeve is located inside the rotor body, one end of the disc spring is located outside the rotating rod, and the other end of the disc spring is located inside the rotor body.

[0008] Preferably, the auxiliary component includes a compression ball, the outside of which is disposed inside the disc spring, one end of which is disposed inside the rotor body, and the other end of which is fixedly connected to a sliding rod.

[0009] Preferably, the outer side of the sliding rod is slidably connected to the inside of the disc spring, and the outer side of the sliding rod is slidably connected to the inside of the rotating rod.

[0010] Preferably, the rotating rod is provided with an auxiliary component two inside, and the auxiliary component two is located outside the sliding sleeve.

[0011] Preferably, the auxiliary component two includes damping silicone grease, the outer part of which is disposed inside the rotating rod, and the inner part of which is disposed outside the sliding sleeve. The sliding sleeve has a deformation groove and a heat dissipation port inside.

[0012] Preferably, the rotating rod is provided with a support assembly inside.

[0013] Preferably, the support assembly includes a support shell, the outside of which is fixedly connected to the inside of the rotating rod. An elastic element is provided inside the support shell, a sliding block is provided at one end of the elastic element, a limit block is fixedly connected inside the sliding block, and a flexible plate is fixedly connected at one end of the sliding block.

[0014] Preferably, the outer side of the sliding block is slidably connected to the inside of the support shell, and the outer side of the limiting block is slidably connected to the inside of the support shell.

[0015] By adopting the above technical solution, the motor uses the rotating magnetic field generated by the energization of the stator body to drive the rotor body to rotate around the rotating shaft, thereby realizing the conversion of electrical energy into a basic function. During operation, when the rotor body is deviated by the axial magnetic pull, the floating support mechanism stores the deviated energy through the compression deformation of the disc springs and uses their elastic restoring force to push the rotor body to reset. The compression ball and sliding rod ensure that multiple disc springs move synchronously, and the sliding sleeve constrains the deformation range of the disc springs and provides protection. At the same time, the damping grease in the auxiliary component two generates hydraulic damping to suppress high-frequency vibration when the sliding sleeve resonates and floats. The deformation groove provides compensation space for the thermal expansion of the sliding sleeve, and the heat dissipation port timely discharges internal heat, ensuring that the components work normally under complex working conditions. In addition, when the rotor body deviates beyond the adjustment range of the elastic element, the limiting block in the support component abuts against the end point of the limiting groove on the inner wall of the support shell to form a rigid mechanical stop, forcibly limiting the rotor body from continuing to deviate.

[0016] This invention provides a dual-stator alternating permanent magnet motor with reduced axial magnetic pull. It offers the following advantages: 1. This invention achieves a passive real-time dynamic balance by setting the sliding sleeve to slide along the rotating rod when the rotor body undergoes axial displacement, causing the compression ball to drive the synchronous deformation of each disc spring, and the elastic restoring force of the disc spring to act in the opposite direction on the rotor body. This effectively reduces the axial magnetic pull during the operation of the dual-stator alternating permanent magnet motor and improves the stability and reliability of the motor operation.

[0017] 2. This invention uses damping silicone grease filled between the rotating rod and the sliding sleeve. Its viscous properties generate damping force when the sliding sleeve floats. Deformation grooves are opened inside the sliding sleeve, and heat dissipation vents serve as heat convection channels. This prevents abnormal operation caused by external factors and improves the stability and reliability of the motor under complex working conditions.

[0018] 3. This invention sets up a flexible plate to contact the rotor body and transmit thrust, which drives the sliding block to compress the elastic element. When the displacement reaches the end point of the limit block and the limit groove on the inner wall of the support shell, a mechanical hard stop is formed, which stops the sliding block from moving further. This limits the maximum offset of the rotor body, prevents the rotor body from colliding with the stator body, and plays a mechanical hard limit protection role, effectively avoiding equipment damage caused by excessive axial magnetic pull. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the motor housing of the present invention; Figure 3 This is a schematic diagram of the stator body of the present invention; Figure 4 This is a schematic diagram of the rotating shaft of the present invention; Figure 5 This is a schematic diagram of the extrusion ball of the present invention; Figure 6 This is a schematic diagram of the sliding rod of the present invention; Figure 7 This is a schematic diagram of the rotating rod of the present invention; Figure 8 for Figure 7 Enlarged view of point A in the middle; Figure 9 This is a schematic diagram of the sliding block of the present invention.

[0020] The components include: 1. Motor housing; 2. Rotating rod; 3. Rotating shaft; 4. Stator body; 5. Rotor body; 6. Floating support mechanism; 7. Auxiliary component two; 8. Support component. 61. Floating component; 611. Sliding sleeve; 612. Disc spring; 62. Auxiliary component one; 621. Extrusion ball; 622. Sliding rod; 71. Damping silicone grease; 72. Deformation groove; 73. Heat dissipation vent; 81. Support shell; 82. Elastic element; 83. Sliding block; 84. Flexible plate; 85. Limiting block. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides a dual-stator alternating permanent magnet motor with reduced axial magnetic pull, comprising a motor housing 1, a rotating rod 2 rotatably connected inside the motor housing 1, a rotating shaft 3 rotatably connected outside the rotating rod 2, the rotating shaft 3 being fixedly connected outside the motor housing 1, a stator body 4 being fixedly connected inside the motor housing 1, a rotor body 5 rotatably connected inside the stator body 4, the rotor body 5 being disposed outside the rotating rod 2, a floating support mechanism 6 being disposed inside the rotating rod 2, one end of the floating support mechanism 6 being disposed inside the rotor body 5, the floating support mechanism 6 including a floating component 61 and an auxiliary component 62, the floating component 61 being slidably connected outside the rotating rod 2, the auxiliary component 62 being disposed outside the floating component 61, the floating component 61 including a sliding sleeve 611, one end of the sliding sleeve 611 being slidably connected inside the rotating rod 2.

[0023] Specifically, the motor housing 1 is used to support and fix the rotating shaft 3 to the stator body 4, and the rotating shaft 3 is used to assist the rotating rod 2 in rotating. At the same time, the rotating rod 2 is connected to the rotor body 5 through the floating support mechanism 6. The rotation of the rotor body 5 generates a rotating magnetic field after the stator winding inside the stator body 4 is energized. This magnetic field cuts the rotor body 5 to form magnetic pole coupling, so that the rotor body 5 generates an induced current or has its own fixed magnetic poles. The electromagnetic attraction and repulsion between the stator and rotor magnetic fields form a continuous torque, thereby driving the rotor body 5 to rotate continuously and output power. This motor is suitable for use in stamping equipment and industrial robots.

[0024] Please see the appendix Figure 4 -Appendix Figure 6The sliding sleeve 611 is equipped with a disc spring 612 inside. The other end of the sliding sleeve 611 is located inside the rotor body 5. One end of the disc spring 612 is located outside the rotating rod 2, and the other end of the disc spring 612 is located inside the rotor body 5. The auxiliary component 62 includes a compression ball 621. The outer part of the compression ball 621 is located inside the disc spring 612. One end of the compression ball 621 is located inside the rotor body 5, and the other end of the compression ball 621 is fixedly connected to a sliding rod 622. The outer part of the sliding rod 622 is slidably connected to the inside of the disc spring 612, and the outer part of the sliding rod 622 is slidably connected to the inside of the rotating rod 2.

[0025] Specifically, the rotating rod 2 supports the sliding sleeve 611 for sliding, and the rotating rod 2 and the rotor body 5 support the disc spring 612 for compression. The sliding sleeve 611 then limits the compression deformation of the disc spring 612, and the disc spring 612 supports the compression ball 621 and the sliding rod 622 for sliding. One end of the compression ball 621 is stored inside the rotor body 5, and the rotating rod 2 supports the sliding rod 622 for sliding. The compression ball 621 and the sliding rod 622 prevent poor synchronization of multiple disc springs 612, resulting in a more uniform dynamic gap adjustment response. When the rotor body 5 is deflected due to the influence of magnetism, the rotor body 5 will drive the disc spring 612 to compress on the surface of the rotating rod 2, and the rotor body 5 will simultaneously drive the compression ball 621 to slide with the sliding rod 622. Then, the compression ball 621 will drive multiple disc springs 612 to be compressed simultaneously, and the sliding rod 622 can provide guidance for the disc spring 612 during the compression process and cooperate with the sliding sleeve 611. At the same time, the rotor body 5 will drive the sliding sleeve 611 to slide into the interior of the rotating rod 2, and the sliding sleeve 611 can prevent the disc spring 612 from being damaged.

[0026] Please see the appendix Figure 6 -Appendix Figure 8 The rotating rod 2 is equipped with an auxiliary component 2 7, which is located inside the sliding sleeve 611. The auxiliary component 2 7 includes a damping silicone grease 71, which is located inside the rotating rod 2 and outside the sliding sleeve 611. The sliding sleeve 611 is provided with a deformation groove 72 and a heat dissipation port 73.

[0027] Specifically, the rotating rod 2 is used to store damping grease 71, and the sliding sleeve 611 has a deformation groove 72 and a heat dissipation port 73 inside. When the sliding sleeve 611 floats up and down or left and right due to resonance, the damping grease 71 will be squeezed and flowed, generating strong hydraulic damping, which effectively suppresses high-frequency vibration. When the internal temperature of the motor continues to rise, the sliding sleeve 611 expands due to its own material. The sliding sleeve 611 can be adjusted through the deformation groove 72, so that the expansion of the sliding sleeve 611 will not affect the compression of the disc spring 612 and the sliding sleeve 611 will slide into the rotating rod 2. At the same time, the heat dissipation port 73 on the sliding sleeve 611 effectively reduces the heat inside the sliding sleeve 611.

[0028] Please see the appendix Figure 7 -Appendix Figure 9 The rotating rod 2 is provided with a support assembly 8 inside; the support assembly 8 includes a support shell 81, the support shell 81 is fixedly connected to the outside of the rotating rod 2 inside, the support shell 81 is provided with an elastic element 82 inside, one end of the elastic element 82 is provided with a sliding block 83, the sliding block 83 is fixedly connected to a limit block 85 inside, and one end of the sliding block 83 is fixedly connected to a flexible plate 84; the outside of the sliding block 83 is slidably connected to the inside of the support shell 81, and the outside of the limit block 85 is slidably connected to the inside of the support shell 81.

[0029] Specifically, the rotating rod 2 is used to support and fix the support shell 81, and the support shell 81 is used to support the sliding block 83 and the limiting block 85 to slide. Furthermore, the support shell 81 is used to support the elastic element 82 for compression, and the sliding block 83 is used to support and fix the flexible plate 84. The flexible plate 84 can prevent scratching the inner surface of the rotor body 5 when it comes into contact with the rotor body 5. When the rotor body 5 is affected by magnetism and the displacement is too large, the rotor body 5 will squeeze the flexible plate 84 and the sliding block 83 to slide. The sliding block 83 will drive the limiting block 85 to slide inside the support shell 81. In the process of sliding, the sliding block 83 will squeeze the elastic element 82 for compression. The support shell 81 has a sliding space for the limiting block 85. When the limiting block 85 slides to the bottom, the sliding block 83 and the flexible plate 84 stop sliding, which can prevent the rotor body 5 from colliding with the stator body 4.

[0030] Workflow: When the motor is working, the stator body 4, fixed inside the motor housing 1, generates a rotating magnetic field after being energized. During operation, if the rotor body 5 is deviated due to axial magnetic pull, it will push the disc springs 612 to compress against the surface of the rotating rod 2. At the same time, it will drive the compression ball 621 and the sliding rod 622 to slide. The compression ball 621 causes multiple disc springs 612 to be compressed synchronously. The sliding rod 622 provides guidance during compression and cooperates with the sliding sleeve 611. The rotor body 5 simultaneously drives the sliding sleeve 611 to slide into the rotating rod 2. The sliding sleeve 611 constrains the deformation range of the disc springs 612 and provides protection for them. The disc springs 612 then offset the deviated force through their own elastic restoring force, pushing the rotor body 5 to return to its original position. The compression ball 621 and the sliding rod 622 work together to ensure the consistency of the actions of multiple disc springs 612, thereby achieving a passive real-time dynamic balance effect. This effectively reduces the axial magnetic pull during the operation of the dual-stator alternating permanent magnet motor and improves the stability and reliability of the motor operation.

[0031] When the sliding sleeve 611 floats due to resonance, the damping grease 71 is squeezed and flows inside, thereby generating a strong hydraulic damping effect, which effectively suppresses high-frequency vibration. At the same time, when the internal temperature of the motor continues to rise, causing the sliding sleeve 611 to expand, the deformation groove 72 can provide deformation compensation space, so that the sliding sleeve 611 will not affect the normal compression of the disc spring 612 after expansion, nor will it hinder its smooth sliding into the rotating rod 2. The heat dissipation port 73 helps to dissipate the heat accumulated inside the sliding sleeve 611 in a timely manner, thereby preventing abnormal operation caused by external factors and improving the stability and reliability of the motor under complex working conditions.

[0032] When the rotor body 5 is subjected to excessive axial displacement due to magnetic influence, the rotor body 5 first squeezes the flexible plate 84, which in turn pushes the sliding block 83 to slide along the inside of the support shell 81. At the same time, the sliding block 83 drives the limiting block 85 to move synchronously within the support shell 81. During this process, the sliding block 83 squeezes the elastic element 82 to gradually compress it, thereby absorbing the displacement energy and generating reverse resistance. When the limiting block 85 slides to the end of the limiting space opened inside the support shell 81, the sliding block 83 and the flexible plate 84 stop sliding. This can limit the maximum displacement of the rotor body 5, prevent the rotor body 5 from colliding with the stator body 4, play a mechanical hard limiting protection role, and effectively avoid equipment damage caused by excessive axial magnetic pull.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull, comprising a motor housing (1), characterized in that, The motor housing (1) is rotatably connected to a rotating rod (2), and the rotating rod (2) is rotatably connected to a rotating shaft (3). The rotating shaft (3) is fixedly connected to the inside of the motor housing (1). The motor housing (1) is fixedly connected to a stator body (4). The stator body (4) is rotatably connected to a rotor body (5). The inside of the rotor body (5) is located outside the rotating rod (2). The rotating rod (2) is equipped with a floating support mechanism (6). One end of the floating support mechanism (6) is located inside the rotor body (5). The floating support mechanism (6) includes a floating component (61) and an auxiliary component (62). The outside of the floating component (61) is slidably connected to the inside of the rotating rod (2). The outside of the auxiliary component (62) is located inside the floating component (61). The floating component (61) includes a sliding sleeve (611). One end of the sliding sleeve (611) is slidably connected to the inside of the rotating rod (2).

2. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 1, characterized in that, The sliding sleeve (611) is provided with a disc spring (612) inside. The other end of the sliding sleeve (611) is provided inside the rotor body (5). One end of the disc spring (612) is provided outside the rotating rod (2), and the other end of the disc spring (612) is provided inside the rotor body (5).

3. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 1, characterized in that, The auxiliary component (62) includes a compression ball (621), the outside of which is disposed inside the disc spring (612), one end of which is disposed inside the rotor body (5), and the other end of which is fixedly connected to a sliding rod (622).

4. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 3, characterized in that, The external sliding rod (622) is slidably connected to the inside of the disc spring (612), and the external sliding rod (622) is slidably connected to the inside of the rotating rod (2).

5. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 1, characterized in that, The rotating rod (2) is provided with an auxiliary component two (7), and the interior of the auxiliary component two (7) is located outside the sliding sleeve (611).

6. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 5, characterized in that, The auxiliary component 2 (7) includes damping silicone grease (71). The exterior of the damping silicone grease (71) is disposed inside the rotating rod (2), and the interior of the damping silicone grease (71) is disposed outside the sliding sleeve (611). The sliding sleeve (611) has a deformation groove (72) and a heat dissipation port (73) inside.

7. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 1, characterized in that, The rotating rod (2) is provided with a support assembly (8) inside.

8. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 7, characterized in that, The support assembly (8) includes a support shell (81), the outside of which is fixedly connected to the inside of the rotating rod (2). An elastic element (82) is provided inside the support shell (81), and a sliding block (83) is provided at one end of the elastic element (82). A limit block (85) is fixedly connected inside the sliding block (83), and a flexible plate (84) is fixedly connected at one end of the sliding block (83).

9. A dual-stator alternating permanent magnet motor for reducing axial magnetic pull according to claim 8, characterized in that, The external sliding block (83) is slidably connected to the inside of the support shell (81), and the external sliding block (85) is slidably connected to the inside of the support shell (81).

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