Self-starting axial motor with a permanent magnetized rotor

Abstract

The application relates to a self-starting asynchronous rotor permanent magnetization axial motor, and relates to the technical field of motors, which comprises a motor body and a motor assembly; the motor body comprises a motor shell, a motor front cover and a motor rear cover, a plurality of positioning holes are equidistantly arranged on the surfaces of the two sides of the motor shell, positioning bolts are equidistantly movably connected to the motor front cover and the motor rear cover, the positioning bolts are in threaded connection with the positioning holes, and through holes are formed in the motor front cover and the motor rear cover respectively. When a power supply is supplied to a stator winding set through a power supply connector, an alternating magnetic field is generated by the current in the stator winding set, the alternating magnetic field interacts with permanent magnets on a rotor, an electromagnetic torque is generated, a rotating shaft drives the first rotor and the second rotor to rotate together, the initial rotation can be due to the design of the motor structure and the magnetic field, so that sufficient torque can be generated at low speed, so that the motor can be rapidly started and reaches a normal running speed.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, in particular to a self-starting asynchronous rotor permanent magnet axial motor. Background Art

[0002] Modern society is inseparable from electric motors, which are used in transportation, industrial and agricultural production, information processing, and all areas of daily life. There are many types of electric motors with different structures, including asynchronous motors, permanent magnet motors, and electromagnetic motors. Each type of motor has its own characteristics and advantages. In recent years, due to the improvement of the performance of permanent magnet materials, permanent magnet motors have received more attention. Permanent magnet motors have the advantages of high efficiency, high power density, high torque density, and simple rotor structure, making them particularly suitable for high-efficiency occasions.

[0003] However, the insufficient starting performance of traditional motors will lead to prolonged starting time, affecting the normal operation and working efficiency of the equipment, especially in application scenarios that require frequent starting, such as elevators, cranes and industrial automation equipment. In addition, the motor needs to work frequently, and poor heat dissipation will cause the motor to overheat during operation, thereby damaging internal components and shortening the service life of the motor. Overheating will reduce motor efficiency, increase energy consumption, and lead to increased operating costs. In addition, the unstable installation of the stator winding group inside the motor will cause the winding to shift or vibrate during operation, which will reduce the motor efficiency and cause friction between the winding and the rotor, causing mechanical damage and electrical failures, and ultimately leading to motor failure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: the motor starting performance in the related technology is insufficient, which will lead to prolonged starting time, affecting the normal operation and working efficiency of the equipment. The unstable installation of the stator winding group inside the motor will cause the winding to shift or vibrate during operation, which will reduce the efficiency of the motor and cause friction between the winding and the rotor, causing mechanical damage and electrical failure, and ultimately leading to motor failure.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a self-starting asynchronous rotor permanent magnet axial motor, comprising a motor body and a motor assembly;

[0006] The motor body includes a motor housing, a motor front cover and a motor rear cover. A plurality of positioning holes are equidistantly provided on the surfaces of both sides of the motor housing, and positioning bolts are equidistantly and movably connected on the motor front cover and the motor rear cover. The positioning bolts are threadedly connected to the positioning holes. Through holes are respectively provided on the motor front cover and the motor rear cover. A motor assembly is installed between the motor front cover, the motor rear cover and the motor housing; the motor assembly includes a first rotor, a motor shaft, a limit frame, a heat dissipation pipe, a heat dissipation pipe mounting frame, a stator winding group, a magnetic isolation groove, a permanent magnet, a power connector, a coolant feed pipe, a sensor interface and a second rotor. The motor front cover and the motor rear cover are respectively movably connected with the motor shaft in the through holes, and a stator winding group is installed inside the motor housing. The motor shaft is respectively provided with a first rotor and a second rotor on both sides of the stator winding group.

[0007] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor described in the present invention, positioning blocks are arranged in annular shapes on both sides of the stator winding group, and limiting frames are arranged in annular shapes inside the front cover and the rear cover of the motor. The positions of the positioning blocks and the limiting frames cooperate with each other, and the positioning blocks are movably connected to the limiting frames by bolts.

[0008] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor described in the present invention, heat dissipation pipe mounting brackets are arranged in an annular manner on both sides of the stator winding group, and positioning grooves are opened on the heat dissipation pipe mounting brackets. The heat dissipation pipes are detachably arranged on the heat dissipation pipe mounting brackets through the positioning grooves, and one end of the heat dissipation pipe passes through the motor housing and is connected to the coolant feed pipe.

[0009] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor of the present invention, magnetic isolation grooves are equidistantly provided on the surfaces of the first rotor and the second rotor, and permanent magnets are provided in the magnetic isolation grooves.

[0010] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor described in the present invention, a power connector is provided on the surface of the motor housing, the power connector is electrically connected to the stator winding group, the inner wall of the power connector is connected to the power line, and a sensor interface and a sensor are provided on the side of the motor housing surface close to the power connector, and the sensor interface is electrically connected to the sensor.

[0011] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor of the present invention, the motor housing is connected to an external device through a sensor interface for transmitting data detected by the sensor.

[0012] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor described in the present invention, wherein: a first accommodating chamber and a second accommodating chamber are opened inside the power connector, the first accommodating chamber is connected to the second accommodating chamber, the inner wall of the second accommodating chamber is rotatably connected to one end of the rotating shaft, the other end of the rotating shaft is provided with a thread, and the threaded sleeve is connected, the sleeve is fixedly connected to the upper surface of the card plate, the card plate is slidably connected to the inner wall of the second accommodating chamber, the second accommodating chamber below the card plate is provided with a support seat, and a circular groove is opened on the side where the card plate and the support seat are relatively close.

[0013] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor described in the present invention, wherein: the inner wall of the second accommodating chamber is fixedly connected to the partition, one side of the partition is slidably connected to the card plate, the other side of the partition is slidably connected to the movable plate, and a sealing ring is provided on the edge of the movable plate, the second accommodating chamber on the other side of the partition is connected to the telescopic rod through a connecting pipe, one end of the telescopic rod is fixedly connected to the partition, and the other end of the telescopic rod is fixedly connected to the base, and one or more mounting grooves are provided on the base, the inner wall of the mounting groove is fixedly connected to one end of the first spring, and the other end of the first spring is fixedly connected to one end of the ratchet block, the ratchet block is slidably connected to the inner wall of the mounting groove, the other end of the ratchet block is meshed with the ratchet, and the ratchet is fixedly connected to the rotating shaft.

[0014] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor described in the present invention, a limiting member is provided on one side of the ratchet, and the limiting member includes a fixed block, a fixed cylinder, a second spring and a limiting rod. One side of the fixed block is fixedly connected to the top wall of the second accommodating cavity, and the other side of the fixed block is fixedly connected to the outer wall of the fixed cylinder. The inner end wall of the fixed cylinder is fixedly connected to one end of the second spring, and the other end of the second spring is fixedly connected to one end of the limiting rod. The limiting rod is slidably connected to the inner wall of the fixed cylinder, and the other end of the limiting rod is engaged with the ratchet.

[0015] As a preferred solution of the self-starting asynchronous rotor permanent magnet axial motor described in the present invention, a third accommodating chamber is also provided inside the power connector, the inner wall of the third accommodating chamber is slidably connected to the piston head, the piston head is fixedly connected to one end of the screw rod, the screw rod is threaded and passes through the power connector wall, and the other end of the screw rod is fixedly connected to the rotating handle.

[0016] The beneficial effects of the present invention are as follows: when power is supplied to the stator winding group through the power connector, the current in the stator winding group generates an alternating magnetic field, which interacts with the permanent magnet on the rotor to generate electromagnetic torque, so that the shaft drives the first rotor and the second rotor to rotate together. This initial rotation can be due to the design of the motor structure and magnetic field, which enables sufficient torque to be generated at low speed, so that the motor can start quickly and reach normal operating speed.

[0017] To prevent overheating, heat pipe mounting brackets are installed on both sides of the stator winding group. There are positioning grooves on the brackets for fixing the heat pipes. The heat pipes are O-shaped structures, and one end is connected to the coolant inlet pipe. The coolant flows through the heat pipes and takes away the heat generated when the motor is working. Positioning blocks are provided on both sides of the stator winding group, which are movably connected to the limit brackets by bolts to ensure the stable installation of the stator winding group and prevent displacement due to vibration or other reasons.

[0018] Sensors are installed on the stator winding group. Hall effect sensors monitor the rotational position and speed of the first rotor and the second rotor in real time and transmit these data to the sensor interface. The data collected by the sensors helps the control system to make real-time adjustments to the motor's operating status, such as parameters such as temperature, vibration and current. The data is then transmitted to external equipment for analysis and control, thereby improving the motor's operating efficiency and reliability and ensuring that the motor operates as expected.

[0019] The power cord can be clamped by utilizing the heat generated during the operation of the motor, without the need for additional operation, making it more convenient to use BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of the embodiment of the present disclosure.

[0021] Figure 2 Schematic diagram of the motor housing structure in an embodiment of the present disclosure.

[0022] Figure 3 It is a vertical cross-sectional view of the front cover of the motor in an embodiment of the present disclosure.

[0023] Figure 4 Schematic diagram of the heat pipe structure in the embodiment of the present disclosure.

[0024] Figure 5 This is a top view of the motor front cover in an embodiment of the present disclosure.

[0025] Figure 6 2 is a cross-sectional view of a power connector in an embodiment of the present disclosure.

[0026] Figure 7 Schematic diagram of the rotating shaft and sleeve structure in an embodiment of the present disclosure.

[0027] Figure 8 In the embodiment of the present disclosure Figure 6 Enlarged schematic diagram of point A in the middle.

[0028] Figure 9 2 is a cross-sectional view of the base in an embodiment of the present disclosure.

[0029] Figure 10 It is a cross-sectional view of the fixing cylinder in the embodiment of the present disclosure.

[0030] Figure 11In the embodiment of the present disclosure Figure 6 Enlarged schematic diagram of point B in the middle.

[0031] Figure 1: Motor body 100, motor assembly 200, motor housing 1, motor front cover 2, motor rear cover 3, first rotor 4, motor shaft 5, limit frame 6, positioning hole 7, heat dissipation pipe 8, heat dissipation pipe mounting frame 9, positioning bolt 10, positioning groove 11, stator winding group 12, magnetic isolation groove 13, permanent magnet 14, power connector 15, first accommodating chamber 151, second accommodating chamber 152, partition 1521, movable plate 1522, sealing ring 15221, connecting pipe 1523, telescopic rod 1524, base 1525, mounting groove 1526, first spring 1527, ratchet block 1528, ratchet 1529, rotating shaft 153, sleeve 154, clamping plate 155, circular groove 1551, support seat 156, limiting member 157, fixing block 1571, fixing cylinder 1572, second spring 1573, limiting rod 1574, third accommodating chamber 158, piston head 1581, screw rod 1582, rotating handle 1583, coolant feed pipe 16, sensor interface 17, sensor 171, positioning block 18, second rotor 19, through hole 20, power cord 21. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0033] Reference Figure 1-Figure 5 This embodiment provides a self-starting asynchronous rotor permanent magnet axial motor, comprising a motor body 100 and a motor assembly 200; the motor body 100 comprises a motor housing 1, a motor front cover 2, and a motor rear cover 3. A plurality of positioning holes 7 are equidistantly formed on both sides of the motor housing 1, and positioning bolts 10 are equidistantly and movably connected to the motor front cover 2 and the motor rear cover 3. The positioning bolts 10 are threadedly connected to the positioning holes 7. A through hole 20 is formed on each of the motor front cover 2 and the motor rear cover 3. The motor assembly 200 is installed between the motor front cover 2, the motor rear cover 3, and the motor housing 1.

[0034] In this embodiment, preferably, the motor front cover 2 and the motor rear cover 3 are assembled with the motor housing 1 by means of positioning bolts 10 to ensure the correct position and tight connection of each component.

[0035] The motor assembly 200 includes a first rotor 4, a motor shaft 5, a limit frame 6, a heat dissipation pipe 8, a heat dissipation pipe mounting frame 9, a stator winding group 12, a magnetic isolation groove 13, a permanent magnet 14, a power connector 15, a coolant inlet pipe 16, a sensor interface 17 and a second rotor 19. The motor front cover 2 and the motor rear cover 3 are respectively movably connected to the motor shaft 5 in the through hole 20, and the stator winding group 12 is installed inside the motor housing 1. The motor shaft 5 is respectively provided with the first rotor 4 and the second rotor 19 on both sides of the stator winding group 12.

[0036] In this embodiment, preferably, the stator winding group 12 is installed in the motor housing 1 to ensure its correct position and winding method, and the motor shaft 5 is installed through the through holes 20 of the motor front cover 2 and the motor rear cover 3 so that it can support the first rotor 4 and the second rotor 19 on both sides of the stator winding group 12.

[0037] Positioning blocks 18 are arranged in an annular manner on both sides of the stator winding group 12, and a limiting frame 6 is arranged in an annular manner inside the motor front cover 2 and the motor rear cover 3. The positions of the positioning blocks 18 and the limiting frame 6 cooperate with each other, and the positioning blocks 18 are movably connected to the limiting frame 6 by bolts.

[0038] In this embodiment, preferably, the first rotor 4 and the second rotor 19 are installed to ensure that they are in the correct position on the motor shaft 5, and magnetic isolation grooves 13 are equidistantly arranged on their surfaces and permanent magnets 14 are installed. The heat dissipation pipe mounting frame 9 and the heat dissipation pipe 8 are installed and fixed on both sides of the stator winding group 12 through the positioning groove 11 to ensure that the heat dissipation pipe 8 can effectively dissipate heat and is connected to the coolant feed pipe 16.

[0039] The stator winding group 12 is provided with a heat dissipation pipe mounting frame 9 in a ring shape on both sides. The heat dissipation pipe mounting frame 9 is provided with a positioning groove 11. The heat dissipation pipe 8 is detachably provided on the heat dissipation pipe mounting frame 9 through the positioning groove 11. One end of the heat dissipation pipe 8 passes through the motor housing 1 and is connected to the coolant feed pipe 16.

[0040] Magnetic isolation grooves 13 are equidistantly provided on the surfaces of the first rotor 4 and the second rotor 19 , and permanent magnets 14 are provided in the magnetic isolation grooves 13 .

[0041] The motor housing 1 is provided with a power connector 15, which is electrically connected to the stator winding assembly 12. The inner wall of the power connector 15 is connected to a power line 21. A sensor interface 17 and a sensor 171 are provided on the side of the motor housing 1 near the power connector 15, and are electrically connected to the sensor 171. The sensor 171 is a Hall effect sensor.

[0042] The motor housing 1 is connected to external devices via a sensor interface 17 for transmitting data detected by the sensor. The sensor interface 17 is mounted on the side of the motor housing 1 near the power connector 15, and the sensor is mounted on the stator winding 12 to ensure accurate measurement and data transmission.

[0043] Preferably, in this embodiment, the motor front cover 2 and the motor rear cover 3 are tightly connected to the motor housing by positioning bolts 10 to ensure the structural stability of the motor and provide a solid foundation for the normal operation of the motor. The stator winding group 12 is installed in the motor housing 1 through the correct position and winding method. The stator winding group 12 is an important part for generating an alternating magnetic field. Its precise installation ensures the uniformity and effectiveness of the electromagnetic field. The motor shaft 5 is installed through the through holes of the motor front cover 2 and the motor rear cover 3, and the first rotor 4 and the second rotor 19 are fixed thereon. The correct installation of the first rotor 4 and the second rotor 19 and the uniform distribution of the surface permanent magnets 14 ensure the balance and stability of the motor during startup and operation.

[0044] The installation of the sensor interface 17 and the sensor enables the motor to monitor the status of the stator winding group 12 in real time. The data collected by the sensor helps the control system to make real-time adjustments to the motor operating status, such as parameters such as temperature, vibration and current, thereby improving the operating efficiency and reliability of the motor. Example 2

[0045] Reference Figures 6-11 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that.

[0046] The power connector 15 is provided with a first accommodating chamber 151 and a second accommodating chamber 152. The first accommodating chamber 151 is connected to the second accommodating chamber 152. The inner wall of the second accommodating chamber 152 is rotatably connected to one end of a rotating shaft 153. The other end of the rotating shaft 153 is provided with a thread and is threadedly connected to a sleeve 154. The sleeve 154 is fixedly connected to the upper surface of a clamping plate 155. The clamping plate 155 is slidably connected to the inner wall of the second accommodating chamber 152. A support seat 156 is provided in the second accommodating chamber 152 below the clamping plate 155, and a circular groove 1551 is provided on the side where the clamping plate 155 and the support seat 156 are relatively close.

[0047] In this embodiment, preferably, the power cord 21 is placed in the first accommodating cavity 151, and the power cord 21 enters the second accommodating cavity 152, and the rotating shaft 153 is driven to rotate. When the rotating shaft 153 rotates, the sleeve 154 moves downward under the action of the thread, and the sleeve 154 drives the clamping plate 155 to move downward. The clamping plate 155 and the support seat 156 cooperate with each other to clamp the power cord 21, preventing the power cord 21 from loosening and causing poor contact, affecting the start-up of the motor, and the stability of the motor during operation. The circular groove 1551 is conducive to the clamping plate 155 and the support seat 156 to fit the surface of the power cord 21, clamping the power cord 21 from the upper and lower sides, increasing the force-bearing surface of the power cord 21, and making the clamping more secure.

[0048] The inner wall of the second accommodating chamber 152 is fixedly connected to the partition 1521, one side of the partition 1521 is slidably connected to the clamping plate 155, and the other side of the partition 1521 is slidably connected to the movable plate 1522, and a sealing ring 15221 is provided on the edge of the movable plate 1522. The second accommodating chamber 152 on the other side of the partition 1521 is connected to the telescopic rod 1524 through a connecting tube 1523. One end of the telescopic rod 1524 is fixedly connected to the partition 1521, and the other end of the telescopic rod 1524 is fixedly connected to the base 1525. The base 1525 is provided with one or more mounting grooves 1526. The inner wall of the mounting groove 1526 is fixedly connected to one end of the first spring 1527, and the other end of the first spring 1527 is fixedly connected to one end of the ratchet block 1528. The ratchet block 1528 is slidably connected to the inner wall of the mounting groove 1526, and the other end of the ratchet block 1528 is meshed with the ratchet 1529, and the ratchet 1529 is fixedly connected to the rotating shaft 153.

[0049] In this embodiment, preferably, Figure 6 The second accommodating cavity 152 at the rear side of the middle movable plate 1522 is closer to the motor. The motor generates a lot of heat during operation, which may cause Figure 6 The hydraulic oil in the second accommodating chamber 152 at the rear side of the middle movable plate 1522 expands due to heat, pushing the movable plate 1522 to move, and the movable plate 1522 compresses Figure 6 The hydraulic oil in the second accommodating chamber 152 in front of the middle movable plate 1522 enters the telescopic rod 1524 through the connecting pipe 1523. The telescopic rod 1524 extends, and the telescopic rod 1524 drives the base 1525 to move. At this time, the ratchet block 1528 drives the ratchet 1529 to rotate, and the ratchet 1529 drives the rotating shaft 153 to rotate. When the rotating shaft 153 rotates, the sleeve 154 moves downward under the action of the thread, and the sleeve 154 drives the clamping plate 155 to move downward. The clamping plate 155 and the support base 156 cooperate with each other to clamp the power cord 21, preventing the power cord 21 from loosening and causing poor contact, which would affect the starting of the motor and the stability of the motor during operation. The power cord 21 can be clamped by utilizing the heat generated by the motor, without the need for additional operation, which is more convenient to use.

[0050] When the telescopic rod 1524 contracts, the ratchet block 1528 moves along the ratchet 1529 and is pressed into the inner wall of the mounting groove 1526. The first spring 1527 is compressed and the ratchet block 1528 cannot drive the ratchet 1529 to rotate, thereby preventing the ratchet 1529 from rotating in the opposite direction and causing the clamping plate 155 to loosen.

[0051] A limiting member 157 is provided on one side of the ratchet 1529, and the limiting member 157 includes a fixed block 1571, a fixed cylinder 1572, a second spring 1573 and a limiting rod 1574. One side of the fixed block 1571 is fixedly connected to the top wall of the second accommodating chamber 152, and the other side of the fixed block 1571 is fixedly connected to the outer wall of the fixed cylinder 1572. The inner end wall of the fixed cylinder 1572 is fixedly connected to one end of the second spring 1573, and the other end of the second spring 1573 is fixedly connected to one end of the limiting rod 1574. The limiting rod 1574 is slidably connected to the inner wall of the fixed cylinder 1572, and the other end of the limiting rod 1574 is engaged and connected to the ratchet 1529.

[0052] In this embodiment, the fixing block 1571 is preferably used to secure the fixing cylinder 1572. When the telescopic rod 1524 is extended, the telescopic rod 1524 drives the base 1525 to move, and the ratchet block 1528 drives the ratchet 1529 to rotate. At this time, the ratchet 1529 follows the inclined surface at the other end of the limiting rod 1574, and the limiting rod 1574 is pressed into the inner wall of the fixing cylinder 1572, thereby compressing the second spring 1573.

[0053] When the telescopic rod 1524 is retracted, the limiting rod 1574 is stuck in the ratchet 1529, locking the position of the ratchet 1529, preventing the ratchet 1529 from rotating, and preventing the ratchet 1529 from rotating in the opposite direction, causing the clamping plate 155 to loosen. The limiting member 157 can lock the rotation direction of the ratchet 1529 in one direction.

[0054] The power connector 15 is also provided with a third accommodating chamber 158, the inner wall of which is slidably connected to a piston head 1581, which is fixedly connected to one end of a screw rod 1582, which is threadedly connected and passes through the wall of the power connector 15, and the other end of the screw rod 1582 is fixedly connected to a rotating handle 1583. Figure 6 The cross section shown cuts open the power connector 15 , and after assembling the various components inside the first accommodating cavity 151 , the second accommodating cavity 152 , and the third accommodating cavity 158 , the two cut power connectors 15 are welded together to complete the assembly of the power connector 15 .

[0055] In this embodiment, preferably, the handle 1583 is rotated, the handle 1583 drives the screw rod 1582 to rotate, and the screw rod 1582 pushes the piston head 1581 to compress the third accommodating chamber 158 and the Figure 6The hydraulic oil in the second accommodating chamber 152 at the rear side of the middle movable plate 1522 pushes the movable plate 1522 to move, and the movable plate 1522 compresses Figure 6 The hydraulic oil in the second accommodating chamber 152 on the front side of the middle movable plate 1522 enters the telescopic rod 1524 through the connecting pipe 1523. The telescopic rod 1524 extends, and the telescopic rod 1524 drives the base 1525 to move. At this time, the ratchet block 1528 drives the ratchet 1529 to rotate, and the ratchet 1529 drives the rotating shaft 153 to rotate. When the rotating shaft 153 rotates, the sleeve 154 moves downward under the action of the thread, and the sleeve 154 drives the clamping plate 155 to move downward. The clamping plate 155 and the support seat 156 cooperate with each other to clamp the power cord 21. When the telescopic rod 1524 contracts, the ratchet 1529 cannot rotate. By repeatedly tightening and loosening the handle 1583, the clamping plate 155 can be driven to move downward, and the clamping plate 155 and the support seat 156 cooperate with each other to clamp the power cord 21, which is easy to use.

[0056] Working principle: When the power cord 21 is inserted into the power connector 15, the handle 1583 is turned, the handle 1583 drives the screw rod 1582 to rotate, and the screw rod 1582 pushes the piston head 1581, compressing the third accommodating chamber 158 and the Figure 6 The hydraulic oil in the second accommodating chamber 152 at the rear side of the middle movable plate 1522 pushes the movable plate 1522 to move, and the movable plate 1522 compresses Figure 6 The hydraulic oil in the second accommodating chamber 152 on the front side of the middle movable plate 1522 enters the telescopic rod 1524 through the connecting pipe 1523. The telescopic rod 1524 extends, and the telescopic rod 1524 drives the base 1525 to move. At this time, the ratchet block 1528 drives the ratchet 1529 to rotate, and the ratchet 1529 drives the rotating shaft 153 to rotate. When the rotating shaft 153 rotates, the sleeve 154 moves downward under the action of the thread, and the sleeve 154 drives the clamping plate 155 to move downward. The clamping plate 155 and the support seat 156 cooperate with each other to clamp the power cord 21. When the telescopic rod 1524 contracts, the ratchet 1529 cannot rotate. By repeatedly tightening and loosening the handle 1583, the clamping plate 155 can be driven to move downward, and the clamping plate 155 and the support seat 156 cooperate with each other to clamp the power cord 21, which is easy to use.

[0057] After power is applied, the current in the stator winding 12 generates an alternating magnetic field. This alternating magnetic field interacts with the permanent magnet 14 on the rotor to generate electromagnetic torque, causing the motor shaft 5 to drive the first rotor 4 and the second rotor 19 to rotate together. Sensors are provided on the stator winding 12. The Hall effect sensors monitor the rotational position and speed data of the first rotor 4 and the second rotor 19 in real time. The data on the rotational position and speed of the first rotor 4 and the second rotor 19 are transmitted to the sensor interface 17 and then transmitted to external equipment for analysis and control to ensure that the motor operates as expected.

[0058] At the same time, in order to prevent overheating, heat pipe mounting brackets 9 are installed on both sides of the stator winding group 12. There are positioning grooves 11 on the brackets for fixing the heat pipes 8. The heat pipes are O-shaped structures, and one end is connected to the coolant inlet pipe 16. The coolant flows through the heat pipe 8 to take away the heat generated when the motor is working. In addition, positioning blocks 18 are provided on both sides of the stator winding group 12, which are movably connected to the limit brackets 6 by bolts to ensure the stable installation of the stator winding group 12 and prevent displacement caused by vibration or other reasons.

[0059] Moreover, the motor generates a lot of heat during operation, which will cause Figure 6 The hydraulic oil in the second accommodating chamber 152 at the rear side of the middle movable plate 1522 expands due to heat, pushing the movable plate 1522 to move, and the movable plate 1522 compresses Figure 6 The hydraulic oil in the second accommodating chamber 152 in front of the middle movable plate 1522 enters the telescopic rod 1524 through the connecting pipe 1523. The telescopic rod 1524 extends, and the telescopic rod 1524 drives the base 1525 to move. At this time, the ratchet block 1528 drives the ratchet 1529 to rotate, and the ratchet 1529 drives the rotating shaft 153 to rotate. When the rotating shaft 153 rotates, the sleeve 154 moves downward under the action of the thread, and the sleeve 154 drives the clamping plate 155 to move downward. The clamping plate 155 and the support base 156 cooperate with each other to clamp the power cord 21, preventing the power cord 21 from loosening and causing poor contact, which would affect the starting of the motor and the stability of the motor during operation. The power cord 21 can be clamped by utilizing the heat generated by the motor, without the need for additional operation, which is more convenient to use.

[0060] When the motor is powered for the first time, the control system on the external device can be designed to automatically start after detecting the power connection. Once the power connector 15 obtains power, the current in the stator winding group 12 begins to flow, generating an alternating magnetic field. The alternating magnetic field of the stator winding group 12 interacts with the permanent magnet 14 on the rotor to generate a preliminary electromagnetic torque, starting the motor shaft 5 to drive the first rotor 4 and the second rotor 19 to rotate. This preliminary rotation can be due to the design of the motor structure and magnetic field, which can generate sufficient torque at low speed, so that the motor can start quickly and reach normal operating speed.

Claims

1. A self-starting asynchronous rotor permanent magnet axial motor, characterized in that: It comprises a motor body (100) and a motor assembly (200); The motor body (100) comprises a motor housing (1), a motor front cover (2) and a motor rear cover (3); a plurality of positioning holes (7) are equidistantly provided on both sides of the motor housing (1); positioning bolts (10) are equidistantly and movably connected on the motor front cover (2) and the motor rear cover (3); the positioning bolts (10) are threadedly connected to the positioning holes (7); through holes (20) are respectively provided on the motor front cover (2) and the motor rear cover (3); a motor assembly (200) is installed between the motor front cover (2), the motor rear cover (3) and the motor housing (1); The motor assembly (200) includes a first rotor (4), a motor shaft (5), a limiting frame (6), a heat dissipation pipe (8), a heat dissipation pipe mounting frame (9), a stator winding group (12), a magnetic isolation groove (13), a permanent magnet (14), a power supply connector (15), a coolant feed pipe (16), a sensor interface (17) and a second rotor (19); the motor front cover (2) and the motor rear cover (3) are respectively movably connected to the motor shaft (5) in the through hole (20); the stator winding group (12) is installed inside the motor housing (1); and the motor shaft (5) is respectively provided with the first rotor (4) and the second rotor (19) on both sides of the stator winding group (12); Magnetic isolation grooves (13) are provided at equal distances on the surfaces of the first rotor (4) and the second rotor (19), and permanent magnets (14) are provided in the magnetic isolation grooves (13); The power connector (15) is provided with a first accommodating chamber (151) and a second accommodating chamber (152) inside. The first accommodating chamber (151) is connected to the second accommodating chamber (152). The inner wall of the second accommodating chamber (152) is rotatably connected to one end of a rotating shaft (153). The other end of the rotating shaft (153) is provided with a thread and is threadedly connected to a sleeve (154). The sleeve (154) is fixedly connected to the upper surface of a card plate (155). The card plate (155) is slidably connected to the inner wall of the second accommodating chamber (152). A support seat (156) is provided in the second accommodating chamber (152) below the card plate (155), and a circular groove (1551) is provided on a side where the card plate (155) and the support seat (156) are relatively close. The inner wall of the second accommodating chamber (152) is fixedly connected to the partition (1521), one side of the partition (1521) is slidably connected to the card plate (155), and the other side of the partition (1521) is slidably connected to the movable plate (1522), and a sealing ring (15221) is provided on the edge of the movable plate (1522). The second accommodating chamber (152) on the other side of the partition (1521) is connected to the telescopic rod (1524) through the connecting pipe (1523), and one end of the telescopic rod (1524) is fixedly connected to the partition (1521). The telescopic rod ( 1524) and the other end thereof is fixedly connected to a base (1525), the base (1525) is provided with one or more mounting grooves (1526), ​​the inner wall of the mounting groove (1526) is fixedly connected to one end of a first spring (1527), the other end of the first spring (1527) is fixedly connected to one end of a ratchet block (1528), the ratchet block (1528) is slidably connected to the inner wall of the mounting groove (1526), ​​the other end of the ratchet block (1528) is meshedly connected to a ratchet wheel (1529), and the ratchet wheel (1529) is fixedly connected to the rotating shaft (153); A limiting member (157) is provided on one side of the ratchet (1529), and the limiting member (157) includes a fixed block (1571), a fixed cylinder (1572), a second spring (1573) and a limiting rod (1574). One side of the fixed block (1571) is fixedly connected to the top wall of the second accommodating cavity (152), and the other side of the fixed block (1571) is fixedly connected to the outer wall of the fixed cylinder (1572). The inner end wall of the fixed cylinder (1572) is fixedly connected to one end of the second spring (1573), and the other end of the second spring (1573) is fixedly connected to one end of the limiting rod (1574). The limiting rod (1574) is slidably connected to the inner wall of the fixed cylinder (1572), and the other end of the limiting rod (1574) is engaged and connected to the ratchet (1529).

2. A self-starting asynchronous rotor permanent magnet axial motor according to claim 1, characterized in that: Positioning blocks (18) are provided in an annular manner on both sides of the stator winding assembly (12), and a limiting frame (6) is provided in an annular manner inside the motor front cover (2) and the motor rear cover (3). The positions of the positioning blocks (18) and the limiting frame (6) are coordinated with each other, and the positioning blocks (18) are movably connected to the limiting frame (6) via bolts.

3. A self-starting asynchronous rotor permanent magnet axial motor according to claim 2, characterized in that: Heat dissipation pipe mounting frames (9) are provided in an annular manner on both sides of the stator winding group (12), and positioning grooves (11) are provided on the heat dissipation pipe mounting frames (9). Heat dissipation pipes (8) are detachably provided on the heat dissipation pipe mounting frames (9) through the positioning grooves (11), and one end of the heat dissipation pipe (8) passes through the motor housing (1) and is connected to the coolant feed pipe (16).

4. A self-starting asynchronous rotor permanent magnet axial motor according to claim 3, characterized in that: A power connector (15) is provided on the surface of the motor housing (1), the power connector (15) is electrically connected to the stator winding assembly (12), the inner wall of the power connector (15) is connected to the power line (21), and a sensor interface (17) and a sensor (171) are provided on a side of the motor housing (1) near the power connector (15), and the sensor interface (17) and the sensor (171) are electrically connected.

5. The self-starting asynchronous rotor permanent magnet axial motor according to claim 1, characterized in that: The motor housing (1) is connected to an external device via a sensor interface (17) for transmitting data detected by the sensor.

6. The self-starting asynchronous rotor permanent magnet axial motor according to claim 1, characterized in that: A third accommodating chamber (158) is further provided inside the power connector (15), the inner wall of the third accommodating chamber (158) being slidably connected to a piston head (1581), the piston head (1581) being fixedly connected to one end of a screw rod (1582), the screw rod (1582) being threadedly connected and passing through the wall of the power connector (15), the other end of the screw rod (1582) being fixedly connected to a rotating handle (1583).

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