Motor rotor with high stability

Abstract

The utility model discloses a motor rotor with high stability, which comprises a shaft and a rotor body arranged on the outer side of the shaft, and micro-channels are symmetrically arranged in the shaft. A cavity of a U-shaped structure is formed in the middle of the shaft, a piston block slides in the cavity, inlet and outlet pipes extending to the outer side of the shaft are fixedly arranged at the two ends of the cavity, sealing pieces are arranged at openings of the inlet and outlet pipes, and the cavity is filled with fluid media. By means of the structure, a balance system is formed by the U-shaped cavity and the piston block, the mass distribution of the rotor can be adjusted, the mass deviation can be compensated to restrain vibration, and the dynamic balance precision is improved; the spiral micro-channel is matched with the graphene heat-conducting film and the rotor fan blade, so that a good heat dissipation structure can be formed, the rotor is cooled, local overheating deformation is avoided, efficient heat dissipation is achieved, and the performance of the rotor is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor rotor technology, and in particular to a motor rotor with high stability. Background Technology

[0002] As the core component of a rotating electric motor, the rotor's performance directly affects the motor's efficiency, vibration noise, reliability, and service life. With industrial equipment developing towards higher speeds, precision, and efficiency, rotor structures need to meet even higher performance requirements.

[0003] When a motor rotor is in use, its high-speed rotation generates internal heat, resulting in a significant temperature rise. Traditional cooling systems dissipate heat through external air cooling, but this is insufficient for effectively cooling the rotor's internal structure. This heat buildup negatively impacts motor efficiency and operational safety. Furthermore, motor rotor designs often employ fixed counterweights for dynamic balancing. However, under high-speed conditions, this structure struggles to compensate for mass distribution shifts caused by material fatigue, temperature deformation, or assembly errors, easily leading to excessive vibration, bearing wear, and other problems, thus failing to adequately guarantee the long-term stability of the motor rotor. Therefore, this invention provides a highly stable motor rotor to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to provide a highly stable motor rotor. The balance system consisting of a U-shaped chamber and a piston block can adjust the rotor mass distribution, compensate for mass deviations to suppress vibration, and improve dynamic balance accuracy. The combination of the spiral microchannel, graphene thermal conductive film, and rotor fan blades can form a good heat dissipation structure to cool the rotor, avoid local overheating and deformation, achieve efficient heat dissipation, and improve rotor performance.

[0005] To achieve the above objectives, a highly stable motor rotor is provided, comprising a shaft and a rotor body mounted on the outside of the shaft, wherein microchannels are symmetrically formed inside the shaft;

[0006] The shaft has a U-shaped chamber in the middle, a piston block slides inside the chamber, and inlet and outlet pipes extending to the outside of the shaft are fixed at both ends of the chamber. The openings of the inlet and outlet pipes are sealed, and the chamber is filled with a fluid medium.

[0007] According to the aforementioned high-stability motor rotor, the rotor body has a segmented structure, consisting of an inner core layer, a buffer middle layer, and a fixed outer layer from the inside out, with neodymium iron boron permanent magnets embedded on the surface of the fixed outer layer.

[0008] According to the aforementioned high-stability motor rotor, a heat-conducting film is provided between the inner layer of the core and the buffer middle layer, and the heat-conducting film is made of graphene.

[0009] According to the aforementioned high-stability motor rotor, one end of the rotor body is fixedly provided with an end plate, and rotor blades are uniformly fixedly provided on one side of the end plate.

[0010] According to the aforementioned high-stability motor rotor, the sealing element is a bolt that is screwed into the inlet and outlet pipes, and a sealing gasket is provided at the connection between the bolt and the inlet and outlet pipes.

[0011] According to the aforementioned high-stability motor rotor, the inner layer of the conductor core is made of high-silicon steel sheet, and the buffer middle layer is made of carbon fiber composite material.

[0012] According to the aforementioned high-stability motor rotor, the microchannel has a spiral structure, and the fluid medium is silicone oil or synthetic hydraulic oil.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, this design features a U-shaped chamber inside the shaft with a movable piston block. Inlet and outlet pipes are connected to both ends of the chamber, forming a closed oil circuit. During normal rotor operation, the piston block is held at the center of the shaft by the equally distributed medium on both sides, ensuring normal shaft rotation. During prolonged high-speed rotor rotation, uneven mass distribution can easily lead to increased vibration. By opening the inlet and outlet pipes and adjusting the distribution of the medium on both sides of the piston block, the piston block can be displaced, adjusting the rotor's mass distribution, compensating for mass deviations to suppress vibration, and improving dynamic balance accuracy.

[0015] 2. Compared with existing technologies, the shaft has symmetrically arranged microchannels inside, allowing for heat dissipation through airflow. Simultaneously, a heat-conducting film is placed between the inner layer of the guide core and the buffer layer to quickly remove heat from the rotor's interior, improving cooling efficiency. Furthermore, a rotor fan is located on one side of the rotor body to drive airflow for cooling, enhancing air-cooling efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a first-view structural schematic diagram of a highly stable motor rotor according to the present invention;

[0018] Figure 2 This is a second-view structural diagram of a highly stable motor rotor according to the present invention;

[0019] Figure 3 This is a schematic diagram of the internal cross-sectional structure of a motor rotor with high stability according to the present invention.

[0020] Figure 4 This utility model provides a highly stable motor rotor. Figure 3Enlarged structural diagram at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the rotor body structure of a motor rotor with high stability according to this utility model.

[0022] Legend:

[0023] 1. Shaft; 2. Rotor body; 3. Microchannel; 4. Chamber; 5. Piston block; 6. Inlet and outlet pipes; 7. Bolt; 8. Sealing gasket; 9. End plate; 10. Rotor fan blade; 11. Heat-conducting film; 21. Inner core layer; 22. Buffer middle layer; 23. Fixing outer layer. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-5 This utility model provides a highly stable motor rotor, which includes a shaft 1 and a rotor body 2 installed on the outside of the shaft 1. Microchannels 3 are symmetrically opened inside the shaft 1. The microchannels 3 have a spiral structure. The spiral structure of the microchannels 3 has a larger contact area with the outside air, and can dissipate heat from the inside of the shaft 1 through airflow.

[0026] A heat-conducting film 11 is provided between the inner core layer 21 and the buffer middle layer 22. The heat-conducting film 11 is made of graphene and is used to quickly dissipate heat from inside the rotor to improve the cooling effect.

[0027] The middle part of the shaft 1 is provided with a U-shaped chamber 4. A piston block 5 slides inside the chamber 4. Both ends of the chamber 4 are fixed with inlet and outlet pipes 6 extending to the outside of the shaft 1. The opening of the inlet and outlet pipes 6 is provided with a seal. The chamber 4 is filled with a fluid medium, which is silicone oil or synthetic hydraulic oil, and has low viscosity, high stability and good fluidity.

[0028] The shaft 1 has a U-shaped chamber 4 with a movable piston block 5 inside. The chamber 4 is connected to inlet and outlet pipes 6 at both ends, forming a closed oil circuit. During normal rotor operation, the piston block 5 is held at the center of the shaft 1 by the equally distributed medium on both sides, ensuring normal rotation of the shaft 1. During prolonged high-speed rotation, uneven mass distribution can easily lead to increased vibration. By opening the inlet and outlet pipes 6 and adjusting the distribution of the medium on both sides of the piston block 5, the piston block 5 can be displaced, adjusting the rotor's mass distribution, compensating for mass deviations to suppress vibration, and improving dynamic balance accuracy.

[0029] The rotor body 2 has a segmented structure, consisting of an inner core layer 21, a buffer middle layer 22, and a fixed outer layer 23 from the inside out. The surface of the fixed outer layer 23 is embedded with neodymium iron boron permanent magnets. The inner core layer 21 is made of high silicon steel sheet, and the buffer middle layer 22 is made of carbon fiber composite material.

[0030] The inner core 21 is made of high silicon steel sheets, which optimizes the magnetic circuit conduction efficiency; the buffer middle layer 22 is made of carbon fiber composite material, which provides damping and vibration reduction. The use of carbon fiber composite material makes the rotor lighter; the fixed outer layer 23 is embedded with neodymium iron boron permanent magnets to form the motor magnetic field.

[0031] One end plate 9 is fixed to one end of the rotor body 2, and rotor fan blades 10 are uniformly fixed on one side of the end plate 9 to drive airflow to cool the rotor and enhance air cooling efficiency.

[0032] The sealing element is a bolt 7 that screws into the inlet / outlet pipe 6. The bolt 7 is easy to install and remove, making it convenient to add and discharge the medium inside the chamber 4. In addition, a sealing gasket 8 is provided at the connection between the bolt 7 and the inlet / outlet pipe 6, and the pipe opening is sealed by the bolt 7 with the sealing gasket 8 to form a closed oil passage.

[0033] Working principle: A U-shaped chamber 4 is set inside the shaft 1, and a piston block 5 moves within it. The two ends of the chamber 4 are connected to inlet and outlet pipes 6, forming a closed oil circuit. During normal rotor rotation, the piston block 5 is held at the center of the shaft 1 by the equally distributed medium on both sides, ensuring normal rotation of the shaft 1. During prolonged high-speed rotation of the rotor, uneven mass distribution can easily lead to increased vibration. By opening the inlet and outlet pipes 6, the distribution of the medium on both sides of the piston block 5 is adjusted, causing the piston block 5 to shift. This adjusts the rotor's mass distribution, compensates for mass deviations to suppress vibration, and improves dynamic balance accuracy.

[0034] Microchannels 3 are symmetrically arranged inside the shaft 1, allowing for heat dissipation through airflow. Simultaneously, a heat-conducting film 11 is provided between the inner core layer 21 and the buffer middle layer 22 to quickly dissipate heat from the rotor's interior, improving cooling efficiency. Furthermore, a rotor fan 10 is located on one side of the rotor body 2 to drive airflow and further cool the rotor, enhancing air-cooling efficiency.

[0035] The balancing system formed by the U-shaped chamber 4 and the piston block 5 can adjust the rotor mass distribution, compensate for mass deviations to suppress vibration, and improve dynamic balance accuracy. The combination of the spiral microchannel 3, the graphene thermal conductive film 11, and the rotor fan blades 10 can form a good heat dissipation structure to cool the rotor, avoid local overheating and deformation, achieve efficient heat dissipation, and improve the rotor performance.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A highly stable motor rotor, characterized in that, It includes a shaft (1) and a rotor body (2) installed on the outside of the shaft (1), and microchannels (3) are symmetrically opened inside the shaft (1). The shaft (1) has a U-shaped chamber (4) in the middle. A piston block (5) slides inside the chamber (4). Both ends of the chamber (4) are fixed with inlet and outlet pipes (6) extending to the outside of the shaft (1). The opening of the inlet and outlet pipes (6) is provided with a seal. The chamber (4) is filled with a fluid medium.

2. The highly stable motor rotor according to claim 1, characterized in that, The rotor body (2) has a segmented structure, consisting of an inner core layer (21), a buffer middle layer (22), and a fixed outer layer (23) from the inside out. Neodymium iron boron permanent magnets are embedded on the surface of the fixed outer layer (23).

3. A highly stable motor rotor according to claim 2, characterized in that, A thermally conductive film (11) is provided between the inner core layer (21) and the buffer middle layer (22), and the thermally conductive film (11) is made of graphene.

4. A highly stable motor rotor according to claim 3, characterized in that, One end of the rotor body (2) is fixedly provided with an end plate (9), and rotor blades (10) are uniformly fixed on one side of the end plate (9).

5. A highly stable motor rotor according to claim 4, characterized in that, The sealing element is a bolt (7) that is screwed into the inlet / outlet pipe (6), and a sealing gasket (8) is provided at the connection between the bolt (7) and the inlet / outlet pipe (6).

6. A highly stable motor rotor according to claim 5, characterized in that, The inner layer (21) of the conductor core is made of high silicon steel sheet, and the buffer middle layer (22) is made of carbon fiber composite material.

7. A highly stable motor rotor according to claim 1, characterized in that, The microchannel (3) has a spiral structure, and the fluid medium is silicone oil or synthetic hydraulic oil.

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