Air-cooled motor integrated with planetary reducer

Abstract

The utility model discloses an air-cooled motor integrated with a planetary reducer, which adopts the scheme that a motor is integrated with a planet to form a reducer, and can amplify the torque of the motor, thereby remarkably improving the output torque of the motor to meet the application scene of high torque requirement. Meanwhile, the fan is arranged at the rear end of the rotating shaft of the motor, so that the fan is tightly connected with the rotating shaft of the motor, the rotating speed of the fan is the same as that of the motor, noise of the motor is effectively reduced on the premise that extra power consumption is not increased, and the power consumption performance is optimized. Therefore, the heat dissipation efficiency is improved through a forced air cooling technology.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to an air-cooled motor with an integrated planetary reducer. Background Art

[0002] In fields such as aerospace, there are often high requirements for the performance of motors, especially the demand for high torque density motors. However, when designing high torque density motors, technical problems such as heat dissipation difficulties usually arise.

[0003] To address this technical issue, conventional motors use liquid cooling systems such as water cooling or oil cooling for heat dissipation. However, the large liquid cooling system will inevitably increase the overall weight of the motor and reduce the torque density of the motor. At the same time, since the motor's posture is not fixed, it will affect the motor's reliability, efficiency and overall performance. Therefore, the use of liquid cooling systems in the field of aerospace is often counterproductive. Utility Model Content

[0004] The technical problem to be solved by the present invention is: how to improve the torque density of the motor to meet the performance requirements of aerospace. In order to overcome the above defects of the prior art, the present invention provides an air-cooled motor with an integrated planetary reducer.

[0005] The utility model provides an air-cooled motor with an integrated planetary reducer, comprising a motor, a planetary reducer and a fan, wherein the planetary reducer is arranged at the front end of the motor, and the sun gear contained in the planetary reducer is spline-connected to the front end of the rotating shaft of the motor, and the fan is connected to the rear end of the rotating shaft.

[0006] Compared with the prior art, the air-cooled motor with integrated planetary reducer of the utility model has the following advantages:

[0007] This utility model integrates a motor into a planetary reducer, spline-connecting the sun gear contained in the planetary reducer to the front end of the motor's rotating shaft. This reduces the motor's rotating shaft speed to amplify the motor's torque, significantly increasing the motor's output torque to meet high-torque requirements. Simultaneously, by positioning the fan at the rear end of the motor's rotating shaft, the fan and the motor's rotating shaft are tightly connected, and the fan's speed is the same as the motor's. This design effectively reduces motor noise and optimizes power consumption without increasing additional power consumption, thereby achieving improved heat dissipation efficiency through forced air cooling technology.

[0008] In one possible implementation, the reduction ratio of the planetary reducer is 4, which can achieve the effect of amplifying the torque of the motor by 4 times, thereby significantly improving the output torque of the motor and better meeting application scenarios with high torque requirements.

[0009] In one possible embodiment, a front end cover is provided at the front end of the motor, a front flange is provided on the front end cover, and the planetary reducer is connected to the front flange through a pin; thereby, the front end cover of the motor and the reducer share a flange, which not only achieves the technical effect of amplifying the torque of the motor by four times, but also significantly improves the output torque of the motor to meet application scenarios with high torque requirements.

[0010] In one possible embodiment, the planetary reducer is provided with a heat dissipation sleeve on the outside, and the heat dissipation sleeve is made of aluminum; because the heat dissipation sleeve is made of a material with excellent thermal conductivity, it can quickly and efficiently dissipate heat, thereby greatly improving the overall heat dissipation effect of the motor and planetary reducer, and ensuring the continuous and stable operation of the motor.

[0011] In one possible embodiment, the structure of the motor is configured as follows: the pole-slot combination is 8 poles and 36 slots, the winding span is 4, the winding is a flat wire and is a double-layer winding, and the magnet is divided into five sections along the axial direction of the magnet; the 8-pole 36-slot distributed flat wire winding scheme can achieve higher energy conversion efficiency, and the distributed winding design helps to reduce harmonic generation, making the motor run more smoothly and reducing vibration and noise. In addition, the magnet is divided into five sections axially, which can reduce the magnetic resistance on the magnetic flux path, make the magnetic field distribution more uniform, reduce magnetic flux distortion, and further improve the performance and efficiency of the motor.

[0012] In one possible embodiment, the motor is provided with a shell on the outside, and a plurality of heat dissipation holes are evenly distributed on the shell; these ventilation holes are reasonably arranged and can effectively guide the heat inside the motor to be dissipated to the external environment through the shell, thereby further improving the heat dissipation performance of the motor.

[0013] In one possible embodiment, the material used for the motor shaft is titanium alloy. Selecting titanium alloy as the material for the motor shaft can significantly increase the service life of the motor while reducing the weight of the motor due to the low density, high strength and excellent corrosion resistance of titanium alloy.

[0014] In one possible embodiment, a rear end cover is provided at the rear end of the motor, a rear flange is provided on the rear end cover, the front flange, the rear flange and the stopper of the housing are sealed by sealant, and the rear flange is oil-sealed by providing a lip-shaped sealing oil ring; this solution can achieve the technical effect of making the motor as a whole have a certain degree of waterproof level capability. This precise waterproof design can effectively prevent moisture from invading the interior of the motor, thereby protecting the internal structure of the motor, ensuring that the motor can still work normally in a humid or water-immersed environment, and greatly extending the service life of the motor.

[0015] In a possible embodiment, the winding of the motor (1) is provided with a lead wire, the end of the lead wire passes through the lead wire channel of the rear end cover and is led out to the outside of the housing; this design not only effectively prevents the lead wire from being damaged, but also improves the overall safety of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an air-cooled motor with an integrated planetary reducer disclosed in this embodiment;

[0017] Figure 2 This is a schematic diagram of the motor structure disclosed in this embodiment;

[0018] Figure 3 Schematic diagram of the front end cover structure of the motor disclosed in this embodiment;

[0019] Figure 4 This is a schematic diagram of the connection between the planetary reducer and the motor disclosed in this embodiment;

[0020] Figure 5 This is a schematic diagram of the structure of the motor and fan integration disclosed in this embodiment.

[0021] Description of reference numerals:

[0022] 1. Motor, 10. Magnet, 11. Rotating shaft, 12. Front cover, 13. Housing, 14. Front flange, 15. Rear flange, 16. Lead wire, 17. Stator, 18. Rotor, 19. Rear cover, 2. Planetary reducer, 21. Heat dissipation sleeve, 22. Sun gear, 3. Fan. DETAILED DESCRIPTION

[0023] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0024] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0025] In addition, in the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] The present application will be further described in detail below using an embodiment and in combination with the accompanying drawings and specific embodiments.

[0027] See also Figures 1 to 5 As shown, the embodiment of the present application discloses an air-cooled motor with an integrated planetary reducer, see Figure 1 As shown, the air-cooled motor includes a motor 1, a planetary reducer 2 and a fan 3. The planetary reducer 2 is connected to the front end cover 12 of the motor 1 through a pin, and the sun gear 22 contained in the planetary reducer 2 is spline-connected to the front end of the rotating shaft 11 of the motor 1. The fan 3 is arranged at the rear end of the rotating shaft 11 of the motor 1.

[0028] The motor 1 of this embodiment is an inner rotor motor. Figure 2 、 Figure 3 As shown, in this embodiment, the motor 1 includes a magnet 10, a rotating shaft 11, a front cover 12, a housing 13, two front flanges 14, two rear flanges 15, a stator 17, a rotor 18, and a rear cover 19. The front cover 12 is the frontmost part of the motor 1 and is provided with two front flanges 14. A bearing passes through the center of the front cover 12 laterally, and the rotating shaft 11 is connected to the bearing and is located outside the front cover 12 at both ends. The two front flanges 14 provided on the front cover 12 are symmetrically distributed with respect to the rotating shaft 11, see Figure 3 shown.

[0029] Please continue to see Figure 2As shown, the rear portion of the front cover 12 is the main portion of the motor 1. Within this portion, from the outside in, are the housing 13, stator 17, magnet 10, rotor 18, and the central portion of the rotating shaft 11 that passes through the rotor 18. The housing 13 is connected to the front cover 12, while the stator 17 and magnet 10 are both connected to the front cover 12 via pins. The housing 13 of the motor 1 is evenly distributed with multiple ventilation holes. As a specific example, there are 48 ventilation holes evenly distributed throughout the housing 13. These holes effectively channel heat from the motor's interior through the housing to the external environment, further improving the motor's heat dissipation performance. The magnet 10 of the motor 1 is divided into five sections along its axial direction. This arrangement reduces magnetic resistance along the magnetic flux path, resulting in a more uniform magnetic field distribution, reduced magnetic flux distortion, and further improving the motor's performance and efficiency. Wire is wound around the magnet 10 to form multiple windings with a span of four. The windings are flat wire and double-layered. The pole-slot combination of motor 1 is 8 poles and 36 slots. This 8-pole 36-slot distributed flat wire winding solution can achieve higher energy conversion efficiency. The distributed winding design helps to reduce harmonic generation, making the motor run more smoothly and reducing vibration and noise.

[0030] Please continue to see Figure 2 As shown, the rear cover 19 is the last part of the motor 1. The housing 13 is connected to the rear cover 19. The stator 17 and the magnet 10 are both connected to the rear cover 19 via pins. Two rear flanges 15 are arranged on its surface in a mirror-symmetrical manner with the two front flanges 14. A bearing passes through the center of the rear cover 19. This bearing is connected to the rotating shaft 11. The rear end of the rotating shaft 11 is located outside the rear cover 19 and is connected to the fan 3. Figure 5 As shown in the figure, the windings of motor 1 are provided with lead wires 16, the ends of which pass through the wire holes provided in the rear end cover 19 and are led out to the outside of motor 1. Furthermore, after passing through the rear end cover 19, the lead wires 16 are led out along the rear end cover 19. This design not only effectively prevents damage to the lead wires, but also improves the overall safety of the motor.

[0031] The entire rotating shaft 11 of the motor 1 is made of titanium alloy. The use of titanium alloy as the material for the motor shaft can significantly increase the service life of the motor while reducing the weight of the motor due to the low density, high strength and excellent corrosion resistance of titanium alloy. In terms of waterproof design, the front flange 14 and rear flange 15 of the motor 1 are sealed with sealant at the stop of the housing 13, and the rear flange 15 of the motor 1 is oil-sealed by providing a lip-shaped sealing oil ring. This allows it to have a certain degree of waterproof capability. Through precise waterproof design, it effectively prevents moisture from invading the interior of the motor, thereby protecting the internal structure of the motor and ensuring that the motor can still work normally in a humid or flooded environment, greatly extending the service life of the motor.

[0032] As is well known, planetary reducers 2 are a type of speed reducer widely used in industry. They use gear transmission to reduce the speed of high-speed rotating power units while simultaneously increasing the output torque. The basic structure of planetary reducer 2 includes a sun gear 22, planetary gears, a planetary carrier, an outer ring gear, and an output shaft. Sun gear 22 is located at the center of planetary reducer 2 and is fixed. The planetary gears revolve around sun gear 22, and sun gear 22 and the planetary gears can also rotate on their own. The outer ring gear is the outermost gear ring, while the output shaft is the thickest shaft in the center of the motor, which is connected to the output power. In planetary reducer 2, when the drive source is started and connected to sun gear 22, sun gear 22 drives the planetary gears to rotate together. The entire planetary gear system automatically rotates along the outer gear and outputs force through the output shaft, thereby achieving the purpose of deceleration. By superimposing multiple sets of stage gears and planetary gears, a multiplied and cumulative deceleration force can be achieved.

[0033] The planetary reducer 2 features light weight, compact size, a wide transmission ratio range, high efficiency, smooth operation, low noise, and strong adaptability. It is widely used in industries such as metallurgy, mining, hoisting and transportation, electricity, energy, construction and building materials, light industry, and transportation. Furthermore, the planetary reducer 2 can also be considered a type of servo reducer, a mechanical transmission component that connects the servo motor and the applied load in a motion control system. The planetary reducer 2 is made of titanium alloy.

[0034] In this embodiment, the sun gear 22 in the planetary reducer 2 is spline-connected to the front end of the rotating shaft 11 of the motor 1, and the planetary reducer 2 is connected to the front end cover 12 of the motor 1 via a pin. This allows the front end cover 12 of the motor and the connecting flange of the planetary reducer to be integrated into one piece, achieving the purpose of sharing a flange. This can amplify the torque of the motor by four times, significantly improving the motor's output torque to meet high-torque requirements in applications.

[0035] See also Figure 4 As shown, the planetary reducer 2 is provided with a heat dissipation sleeve 21 on the outside. The heat dissipation sleeve is made of a material with excellent thermal conductivity, which can quickly and efficiently dissipate heat, greatly improving the heat dissipation effect of the motor and ensuring the continuous and stable operation of the motor.

[0036] The air-cooled motor with integrated planetary reducer disclosed in the embodiments of the present application adopts a solution in which the motor 1 is integrated with the planetary reducer 2 to amplify the torque of the motor 1, thereby significantly improving the output torque of the motor 1 to meet application scenarios with high torque requirements. At the same time, by arranging the fan 3 at the rear end of the rotating shaft 11 of the motor 1, the fan 3 is closely connected to the rotating shaft 11 of the motor 1, and the fan 3 rotates synchronously with the motor 1. This design effectively reduces the noise of the motor 1 without increasing additional power consumption and optimizes power consumption performance, thereby achieving improved heat dissipation efficiency through forced air cooling technology.

[0037] Based on the above-mentioned advanced features, the air-cooled motor with integrated planetary reducer of this embodiment can be widely used in application fields such as motor manufacturing, mechanical equipment, and household appliances. First, the motor 1 in this embodiment is integrated with a planetary reducer 2, which can provide high torque output and meet the high torque requirements of mechanical equipment. Secondly, the motor 1 of this embodiment adopts air cooling to dissipate heat, without the need for additional water pumps and water pipes, which simplifies the structure of the motor 1 and reduces the complexity and cost of the motor 1. In addition, the motor 1 of this embodiment also has a certain degree of waterproof ability and is suitable for various environments. Finally, the rotating shaft 11 of the motor 1 of this embodiment is made of titanium alloy, which reduces the weight of the motor 1, making the motor 1 lighter and more suitable for equipment with limited space or that needs to be moved. Therefore, it has broad demand and application prospects in the market.

[0038] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside", "outside", "front", and "back" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0039] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0040] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An air-cooled motor with an integrated planetary reducer, characterized in that: The invention comprises a motor (1), a planetary reducer (2) and a fan (3), wherein the planetary reducer (2) is arranged at the front end of the motor (1), and the sun gear (22) contained in the planetary reducer (2) is spline-connected to the front end of the rotating shaft (11) of the motor (1), and the fan (3) is connected to the rear end of the rotating shaft (11).

2. The air-cooled motor with integrated planetary reducer according to claim 1, characterized in that: The reduction ratio of the planetary reducer (2) is 4.

3. The air-cooled motor with integrated planetary reducer according to claim 2, characterized in that: A front end cover (12) is provided at the front end of the motor (1), a front flange (14) is provided on the front end cover (12), and the planetary reducer (2) is connected to the front flange (14) via a pin.

4. The air-cooled motor with integrated planetary reducer according to claim 3, characterized in that: The planetary reducer (2) is externally covered with a heat dissipation sleeve (21), and the heat dissipation sleeve (21) is made of aluminum.

5. The air-cooled motor with integrated planetary reducer according to claim 3 or 4, characterized in that: The structure of the motor (1) is configured such that: the pole-slot combination is 8 poles and 36 slots, the winding span is 4, the winding is a flat wire and is a double-layer winding, and the magnetic steel (10) is divided into five sections along the axial direction of the magnetic steel (10).

6. The air-cooled motor with integrated planetary reducer according to claim 5, characterized in that: The motor (1) is provided with a housing (13) on the outside, and a plurality of heat dissipation holes are evenly distributed on the housing (13).

7. The air-cooled motor with integrated planetary reducer according to claim 6, characterized in that: The material used for the rotating shaft (11) of the motor (1) is titanium alloy.

8. The air-cooled motor with integrated planetary reducer according to claim 7, characterized in that: The rear end of the motor (1) is provided with a rear end cover (19), and the rear end cover (19) is provided with a rear flange (15). The front flange (14), the rear flange (15) and the stopper of the housing (13) are sealed by a sealant, and the rear flange (15) is oil-sealed by providing a lip-shaped sealing oil ring.

9. The air-cooled motor with integrated planetary reducer according to claim 8, characterized in that: The winding of the motor (1) is provided with a lead wire (16), and the end of the lead wire (16) passes through the lead wire channel of the rear end cover (19) and is led out to the outside of the housing (13).

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