An efficient and multifunctional motor

Abstract

The present invention relates to the technical field of motors, and specifically to a highly efficient and multifunctional motor. The present invention includes a first motor shaft, a second motor shaft, a motor housing, a motor stator, a first motor rotor, a second motor rotor, a first motor shaft side outer cover, a second motor shaft side outer cover, a fixing wire, a first shaft fixing groove, and a second shaft fixing groove. The present invention can be suitable for different states according to different application occasions and application requirements, as well as performance and function requirements, improving the stability of the motor, ensuring the adaptability of the motor, and reducing the volume of the motor; it abandons the pole shoe mode, simplifies the structure, and facilitates winding. The present invention integrates multiple working modes, each mode can be used in different working occasions, is convenient to operate at the same time, improves the practicality of the motor, increases the functions of the motor, and ensures the utilization rate of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and specifically relates to a high-efficiency and multi-functional motor. Background Art

[0002] A motor refers to an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction, or converts electrical energy in one form into electrical energy in another form. A motor generally consists of important components such as a stator, a rotor, a permanent magnet, and a rotating shaft. According to different winding forms, motors are divided into two types: distributed winding motors and concentrated winding motors.

[0003] Motors are mainly used to provide power, speed, etc. for equipment. With the development of intelligent technology, motors are used almost everywhere that can move. Different occasions have different requirements for the performance of motors, and their structures are also different; with the increasing compatibility, higher requirements are put forward for the winding, redundancy, usage mode, application occasions, and compatibility of motors. However, existing motors are all carried out separately for distributed winding and concentrated winding. At the same time, although there is a dual-rotor mode in existing motors, generally one rotor moves under the magnetic field, and the other rotor rotates relative to it according to a coupling, or a magnetic speed regulator is added. The redundancy of existing motors is all carried out according to a winding redundancy mode in one mode, which is not suitable for all occasions, has no selectivity, low compatibility, increases the difficulty of research and development, reduces the efficiency of product testing in research and development, and has a complex structure and low operability. Moreover, in existing motors, the distributed winding requires the existence of pole shoes, which increases the complexity of the structure and the difficulty of winding, and is increasingly not suitable for development requirements. Therefore, there is an increasing need to research a high-efficiency and multi-functional motor. Summary of the Invention

[0004] Aiming at the above deficiencies existing in the prior art, the technical problem to be solved by the present invention is to provide a high-efficiency and multi-functional motor.

[0005] The technical solution adopted by the present invention to achieve the above object is: a high-efficiency and multi-functional motor, including a first motor rotating shaft, a second motor rotating shaft, a motor housing, a motor stator, a first motor rotor, a second motor rotor, a first outer cover on the side of the first motor rotating shaft, a second outer cover on the side of the second motor rotating shaft, a fixing wire, a first rotating shaft fixing groove, and a second rotating shaft fixing groove;

[0006] Inside the motor housing, the first rotating shaft fixing groove and the second motor fixing groove are connected by fixing wires, and the first rotating shaft fixing groove and the second motor fixing groove are located in the middle of the motor housing; one side of the motor housing is connected to the first outer cover on the side of the first motor rotating shaft, and the other side is connected to the second outer cover on the side of the second motor rotating shaft; one end of the first motor rotating shaft is connected to the first rotating shaft fixing groove, and the other end of the first motor rotating shaft extends to the other side of the first outer cover on the side of the first motor rotating shaft and is connected to the first outer cover on the side of the first motor rotating shaft; one end of the second rotating shaft fixing groove is connected to the second motor rotating shaft, and the other end of the second motor rotating shaft extends to the other side of the second outer cover on the side of the second motor rotating shaft;

[0007] The inner wall of the motor housing is connected to the motor stator. The first motor rotating shaft connects the first motor rotor between the first rotating shaft fixing groove and the first outer cover on the side of the first motor rotating shaft, and the second motor rotating shaft connects the second motor rotor between the second rotating shaft fixing groove and the second outer cover on the side of the second motor rotating shaft; the motor stator axially covers the first motor rotor and the second motor rotor.

[0008] A fixing ring is arranged inside the motor housing, and the fixing ring is connected to the fixing wires.

[0009] Heat dissipation fins are arranged outside the motor housing, and fixing holes are respectively arranged on both sides for connecting the first outer cover on the side of the first motor rotating shaft and the second outer cover on the side of the second motor rotating shaft.

[0010] The motor stator is shorter than the second stator iron core. The first stator iron cores are evenly distributed and arranged on the inner wall of the motor housing, and the second stator iron cores are evenly inserted into the first stator iron cores.

[0011] The first stator iron core includes a first stator iron core winding and a core pole shoe, and the core pole shoe is arranged at the head of the first stator iron core.

[0012] The second stator iron core includes a second stator iron core winding and an anti-slip device, and the second stator iron core windings are wound on both sides of the anti-slip device.

[0013] One end of the first motor rotating shaft on the outside of the motor housing is provided with a plurality of rotating shaft convex mouths; one end of the second motor rotating shaft on the outside of the motor housing is provided with one or more rotating shaft convex mouths and one or more rotating shaft notch mouths.

[0014] The first motor rotor includes a first rotor permanent magnet, and the second motor rotor includes a second rotor permanent magnet;

[0015] The first rotor permanent magnet adopts a tooth-shaped insertion shape, and the second rotor permanent magnet adopts a triangular insertion shape; or, the first rotor permanent magnet adopts a triangular insertion shape, and the second rotor permanent magnet adopts a tooth-shaped insertion shape.

[0016] The present invention has the following advantages and beneficial effects:

[0017] 1. The present invention can adapt to different states according to different application scenarios, requirements, as well as performance and function requirements, improving the stability of the motor, ensuring the adaptability of the motor, and reducing the volume of the motor; it abandons the pole shoe mode, simplifies the structure, and facilitates winding.

[0018] 2. The present invention integrates multiple working modes, each mode can be used in different working scenarios, is convenient to operate, improves the practicality of the motor, increases the functions of the motor, and ensures the utilization rate of the motor.

[0019] 3. The present invention adds a double-winding redundancy mode, effectively combines distributed winding and concentrated winding, ensures the redundancy of the motor, improves the reliability of the motor, increases the practical performance, reduces the volume of the motor, and improves the slot fill factor.

[0020] 4. The double-winding redundancy mode adopted by the present invention integrates two winding modes, which is beneficial to improving the performance of the motor, ensuring the stability of the motor, and the two winding modes complement each other in operation, enhancing the reliability of the motor.

[0021] 5. The present invention adopts a new stator structure, reducing the magnetic leakage of the motor, improving the slot fill factor of the motor, enhancing the efficiency of the motor, and increasing the magnetic density of the motor.

[0022] 6. The present invention adopts a new stator structure, reducing the use of pole shoes, adding new anti-slip measures, facilitating the winding of the motor, simplifying the structure of the stator, improving the operability, and reducing the winding difficulty.

[0023] 7. The present invention adopts a double-rotor structure mode, improving the function selection characteristics of the motor, ensuring the application of the motor in different scenarios, and increasing the versatility of the motor.

[0024] 8. The present invention adopts a double-rotor structure mode, and the magnetic steel of the rotor adopts different structures and pole numbers, reducing the processing difficulty of the motor rotor, ensuring convenient installation, preventing incorrect use, improving safety, increasing the application range of the motor, and improving the performance indicators of the motor.

[0025] 9. The present invention adopts a special rotor structure, ensuring the feasibility of combining distributed winding and concentrated winding, enhancing the fixing performance of the rotor, and improving the stability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front structural schematic diagram of the motor according to the embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the internal structure of the motor according to an embodiment of the present invention;

[0028] Figure 3 Side sectional view of the first motor shaft according to an embodiment of the present invention;

[0029] Figure 4 Side sectional view of the second motor shaft according to an embodiment of the present invention;

[0030] Figure 5 Axial structure schematic diagram of the motor according to an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of the rotor magnet according to an embodiment of the present invention.

[0032] Among them, 1 is the first motor shaft, 2 is the second motor shaft, 3 is the motor housing, 4 is the shaft convex, 5 is the shaft notch, 6 is the motor stator, 7 is the first motor rotor, 8 is the second motor rotor, 9 is the outer cover on the side of the first motor shaft, 10 is the outer cover on the side of the second motor shaft, 11 is the fixing wire, 12 is the first shaft fixing groove, and 13 is the second shaft fixing groove. Detailed implementation manners

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] An efficient and multifunctional motor, as Figure 1-2 shown, includes a first motor shaft 1, a second motor shaft 2, a motor housing 3, a shaft convex 4, a shaft notch 5, a motor stator 6, a first motor rotor 7, a second motor rotor 8, an outer cover 9 on the side of the first motor shaft, an outer cover 10 on the side of the second motor shaft, a fixing wire 11, a first shaft fixing groove 12, and a second shaft fixing groove 13. The first motor shaft 1 and the second motor shaft 2 are used to connect with other devices, ensuring that the torque and speed of the motor can be transmitted to other devices.

[0035] As Figure 1-4 shown, the first motor shaft 1 is connected to the shaft convex 4; at the same time, it is connected to the first motor rotor 7; the second motor shaft 2 is connected to the shaft convex 4 and the shaft notch 5; at the same time, it is connected to the second motor rotor 8; the motor housing 3 is connected to the outer cover 9 on the side of the first motor shaft and the outer cover 10 on the side of the second motor shaft, and at the same time, it is connected to the motor stator 6; the motor housing 3 is also connected to the fixing wire 11.

[0036] The first motor shaft 1 and the second motor shaft 2. The first motor shaft 1 mainly includes two or more (depending on the connection of the motor) shaft notches 4. The second motor shaft 2 mainly includes a shaft notch 4 and a shaft slot 5. The shaft slot 5 must exist to distinguish the shafts of the motors on both sides. However, the number of the shaft slot 5 and the shaft notch 4 depends on the connection of the motor. The shaft is mainly made by a fixed mold and then ground and polished to make a smooth object as required. Its main function is to be connected to other devices, ensuring that the torque and speed of the motor can be transmitted to other devices.

[0037] The motor housing 3 is as Figure 5 shown. The motor housing 3 mainly includes heat sinks 3-1 and fixing holes 3-2. The motor housing 3 is mainly made of aluminum material according to the mold and finally polished for the motor. When designing this motor housing 3, a fixing ring needs to be added at the middle housing inside to fix the connection of the steel wire 11. Its main functions include: (1) supporting and fixing the overall structure, the rotor, the stator, the shaft, and the steel wire to connect them together; (2) safely isolating these internal components from human interference or potential environmental damage, reducing the entry of moisture, dirt, or other pollutants that may damage the working components; (3) heat dissipation. The heat dissipation surface or the cooling air flow path needs to be installed inside any housing so that the heat generated by the internal losses can be taken away, enabling the windings to operate within their rated temperature range.

[0038] The shaft notch 4 and the shaft slot 5 are cast and polished together with the motor shaft. Mainly, the notch or grooving process is carried out on the first motor shaft 1 and the second motor shaft 2 respectively. The main function is to distinguish different rotors with different connection structures, facilitating the operator to identify and ensuring connection in different scenarios; increasing the usage methods of the motor and improving the versatility of the motor.

[0039] The motor stator 6 adopts a method of mixing two stator core structures. The main function is to fix the windings and ensure the convenience of winding the windings. At the same time, the stator adopts a structure that axially covers two rotors, ensuring the magnetic density of the motor, reducing the magnetic leakage of the motor, and improving the efficiency of the motor. The volume of the motor is reduced.

[0040] As Figure 3-4 shown, the motor stator 6 includes a first stator core 6-1 and a second stator core 6-2. The first stator core 6-1 includes a first stator core winding 6-1-1 and a core pole shoe 6-1-2. The second stator core 6-2 includes a second stator core winding 6-2-1 and an anti-slip device 6-2-2.

[0041] The two stator core structures are mixed. The first stator core 6-1 is evenly arranged in multiple numbers, and the specific number is determined by the slot pole pairs of the motor. Then, a second stator core 6-2 is added, and the entire stator of the motor is arranged in this mode. The first stator core 6-1 is mainly used for concentrated winding, and the second stator core 6-2 is mainly used for distributed winding. The first stator core 6-1 is equipped with small pole shoes. Such a design can make full use of the short characteristics of the first stator core 6-1, utilize the winding area of the slots, and increase the magnetic density. The second stator core 6-2 is designed as a long structure, and each core is equipped with an anti-slip device. When winding the wire, the wire is evenly wound on both sides of the anti-slip device. Since the second stator core 6-2 is longer than the first stator core 6-1, it also effectively utilizes the winding space, improves the slot fill factor, increases the magnetic density, reduces the winding complexity, and is beneficial to the heat dissipation and performance of the motor.

[0042] The area of the stator composed of the first stator core 6-1 and the second stator core 6-2 needs to cover the areas of the two rotors to ensure effective magnetic field contact, which is beneficial to the output of the motor and improves the stability of the motor.

[0043] The first motor rotor 7 and the second motor rotor 8 adopt different magnet forms and different pole pairs. Their main function is to be cut by magnetic lines of force in the rotating magnetic field, thereby generating (outputting) current, ensuring the stability of current output, improving the applicability of the motor, reducing the difficulty of rotor processing of the motor, ensuring convenient installation, increasing the application range of the motor, and improving the performance index of the motor.

[0044] As Figure 3 、 4 、shown in Figure 6, the rotor mainly includes the first rotor magnet 7-1 and the second rotor magnet 8-1. The first rotor magnet 7-1 and the second rotor magnet 8-1 mainly include the magnet shapes labeled 8-1-1 / 7-1-1 and the magnet shapes labeled 8-1-2 / 7-1-2. Generally, magnets are mainly made through powder making - mixing - molding - sintering - finishing - magnetization. The magnet shape labeled 8-1-1 / 7-1-1 is a tooth-shaped butt joint shape, and the magnet shape labeled 8-1-2 / 7-1-2 is a triangular butt joint shape. The design of the two magnet shapes ensures convenient operation for workers, improves the installation efficiency of the magnet body, and at the same time prevents incorrect magnet installation. When installing, select the magnet shape labeled 8-1-1 / 7-1-1 and the magnet shape labeled 8-1-2 / 7-1-2. One of them is used as the N pole and the other is used as the S pole. The N pole and the S pole are arranged and pasted alternately. At the same time, according to the different pole pairs, select different numbers of magnet quantities to ensure the performance of the motor.

[0045] The outer covers 9 and 10 on the side of the first and second motor rotating shafts are mainly formed by die casting and are polished to the required shape. Their main functions are as follows: (1) Fixing the first motor rotating shaft 1 and the second motor rotating shaft 2 respectively; (2) Increasing the structural rigidity of the motor, which is beneficial for withstanding mechanical environments such as vibrations and drops; (3) Transferring the internal heat outward to ensure the temperature of the motor; (4) Preventing external substances from entering the motor.

[0046] The fixing wire 11 needs to be made with an insulating shield on the outer layer to prevent electromagnetic interference. It mainly connects the motor housing 3, the first rotating shaft fixing groove 12, and the second rotating shaft fixing groove 13, and is mainly used to fix the first motor rotating shaft 1 and the second motor rotating shaft 2, increasing the overall structural rigidity of the motor, stabilizing the rotating shaft, facilitating the rotation of the rotor, reducing the mutual interference of the rotors, reducing the overall volume of the motor, and ensuring that the rotor can rotate normally.

[0047] The general steps of manufacturing the described motor are as follows:

[0048] (1) Processing and casting the housing, manufacturing the mounting holes, fixing holes 3-2, and heat sinks 3-1 of the motor housing 3 according to requirements;

[0049] (2) Processing the rotating shafts, machining the rotating shaft protrusions 4 and rotating shaft notches 5 according to requirements for equipment connection;

[0050] (3) Processing the motor stator 6, motor rotors 7, 8, and rotor magnets 7-1, 8-1;

[0051] (4) The motor stator 6 is wound in two ways: distributed and concentrated according to requirements, and the rotor is also wound. Select one shape of magnet as the N pole and another shape of magnet as the S pole, and attach them to the motor rotors 7, 8;

[0052] (5) Assembling the first motor rotating shaft 1, the second motor rotating shaft 2, the motor stator 6, the motor rotors 7, 8, and the motor housing 3, and finally sealing with the outer covers 9, 10.

[0053] The working modes of the described motor are as follows:

[0054] (1) Stand-alone working mode: The first motor rotating shaft 1 and the second motor rotating shaft 2 are connected separately, and can be powered by distributed winding or concentrated winding for operation;

[0055] (2) Redundant working mode: The two windings are used as redundant control modes, and the rotor can use any one of the rotors of the motor;

[0056] (3) Parallel working mode: The two motor rotors work simultaneously, and the distributed winding and the concentrated winding are used separately;

[0057] (4) Series working mode: The lead-out wires of the distributed winding and the concentrated winding are connected externally, and the last section is connected to the device to operate in the series working mode.

Claims

1. An efficient and multifunctional motor, characterized in that, It includes a first motor shaft, a second motor shaft, a motor housing, a motor stator, a first motor rotor, a second motor rotor, a first motor shaft side outer cover, a second motor shaft side outer cover, a fixing wire, a first shaft fixing groove, and a second shaft fixing groove; Inside the motor housing, the first shaft fixing groove and the second motor fixing groove are connected by a fixing wire, and the first shaft fixing groove and the second motor fixing groove are located in the middle of the motor housing; one side of the motor housing is connected to the first motor shaft side outer cover, and the other side is connected to the second motor shaft side outer cover; the first shaft fixing groove is connected to one end of the first motor shaft, and the other end of the first motor shaft extends to the other side of the first motor shaft side outer cover and is connected to the first motor shaft side outer cover; the second shaft fixing groove is connected to one end of the second motor shaft, and the other end of the second motor shaft extends to the other side of the second motor shaft side outer cover; The inner wall of the motor housing is connected to the motor stator. The first motor shaft connects the first motor rotor between the first shaft fixing groove and the first motor shaft side outer cover, and the second motor shaft connects the second motor rotor between the second shaft fixing groove and the second motor shaft side outer cover; the motor stator axially covers the first motor rotor and the second motor rotor.

2. The high-efficiency and multi-functional motor according to claim 1, wherein A fixing ring is arranged inside the motor housing, and the fixing ring is connected to the fixing wire.

3. An efficient and multi-functional motor according to claim 1, characterized in that, Heat dissipation fins are provided on the outside of the motor housing, and fixing holes are provided on both sides respectively for connecting the first motor shaft side outer cover and the second motor shaft side outer cover.

4. An efficient and multifunctional motor according to claim 1, characterized in that, The motor stator includes a plurality of first stator cores and a plurality of second stator cores. The first stator cores are shorter than the second stator cores. The first stator cores are evenly distributed and arranged on the inner wall of the motor housing, and the second stator cores are evenly inserted into the first stator cores.

5. An efficient and multifunctional motor according to claim 4, characterized in that, The first stator core includes a first stator core winding and a core pole shoe, and the core pole shoe is arranged at the head of the first stator core.

6. An efficient and multifunctional motor according to claim 4, characterized in that The second stator core includes a second stator core winding and an anti-slip device, and the second stator core windings are wound on both sides of the anti-slip device.

7. An efficient and multifunctional motor according to claim 1, characterized in that, One end of the first motor shaft outside the motor housing is provided with a plurality of shaft protrusions; one end of the second motor shaft outside the motor housing is provided with one or more shaft protrusions and one or more shaft notches.

8. An efficient and multi-functional motor according to claim 1, characterized in that, The first motor rotor includes a first rotor magnet, and the second motor rotor includes a second rotor magnet; The first rotor magnet adopts a tooth-shaped butt joint shape, and the second rotor magnet adopts a triangular butt joint shape; or, the first rotor magnet adopts a triangular butt joint shape, and the second rotor magnet adopts a tooth-shaped butt joint shape.

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