High-power permanent magnet synchronous motor with self-checking mechanism

Abstract

The invention discloses a high-power permanent magnet synchronous motor with a self-checking mechanism. The high-power permanent magnet synchronous motor comprises a stator iron core, a permanent magnet, a rotor conducting bar, a rotor iron core, an end cover and a motor controller, a mounting seat is fixedly connected to the upper surface of the motor outer shell, a motor controller is fixedly connected to the upper surface of the mounting seat, a first connecting circuit is fixedly connected to the conveying end of the motor controller, a microprocessor is fixedly connected to the other end of the first connecting circuit, and a second connecting circuit is fixedly connected to the conveying end of the microprocessor; the other end of the second connecting line is fixedly connected with a signal sensor; the self-checking mechanism is designed, the signal sensor and the microprocessor are matched with the motor controller to monitor the permanent magnet synchronous motor in real time, and the occurrence of abnormal conditions of equipment in the using process is reduced; and meanwhile, a cooling device is designed, and a temperature sensor is matched with Freon gas to cool the interior of the motor, so that the influence of over-high temperature on the permanent magnet material is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of synchronous motors, in particular to a high-power permanent magnet synchronous motor with a self-checking mechanism. Background Art

[0002] A permanent magnet synchronous motor is a synchronous motor that uses permanent magnets to generate a magnetic field. The speed of its rotor is consistent with the current frequency of the stator winding. The permanent magnet synchronous motor is composed of a stator, a rotor, an end cover and other components. The stator is basically the same as an ordinary induction motor. It uses a laminated structure to reduce the consumption of the motor during operation. The rotor can be made solid or laminated. The armature winding can be concentrated full-pitch winding, distributed short-pitch winding and unconventional winding. The working principle of the permanent magnet synchronous motor is based on the interaction between the rotating magnetic field generated by the stator and the magnetic field generated by the permanent magnets on the rotor. Pre-magnetized permanent magnets are installed on the rotor. These permanent magnets can generate a strong magnetic field when rotating, thereby providing greater Output torque, the motor's control system will accurately adjust the current to ensure that the motor rotor can rotate synchronously with the rotating magnetic field and maintain a stable operating state. The permanent magnet synchronous motor does not require additional excitation current to generate a magnetic field, thereby reducing energy loss. Compared with traditional asynchronous motors, the efficiency can be increased by more than 10%. Since no additional excitation current is required, the volume and weight of the permanent magnet synchronous motor can be relatively small, thereby achieving high power density. Under the same volume and weight, the permanent magnet synchronous motor can provide greater torque output and achieve precise speed and torque control. The permanent magnet synchronous motor will not have overheating problems during operation, and the structure is relatively simple, so its life and reliability are relatively high.

[0003] However, the traditional permanent magnet synchronous motor cannot meet people's needs, and it has the following defects: First, there is no self-checking mechanism designed. For permanent magnet synchronous motors, the operating status of the motor cannot be effectively judged during use, and abnormal conditions cannot be handled in time, which increases the possibility of motor failure and reduces the service life of the motor to a certain extent; second, there is no cooling device designed. For permanent magnet synchronous motors, the permanent magnet material is more sensitive to temperature, and the motor will generate heat during operation. As the heat increases, the permanent magnet material will be affected, which has a great impact on the life and performance of the motor and reduces the working effect of the motor; third, there is no movable positioning base designed. For permanent magnet synchronous motors, manual handling is required during use, and the motor cannot be quickly moved to the required installation position. In addition, the manpower consumption is relatively large, which increases the cost consumption to a certain extent. Summary of the invention

[0004] The object of the present invention is to provide a high-power permanent magnet synchronous motor with a self-checking mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-power permanent magnet synchronous motor with a self-checking mechanism, comprising a motor outer shell, the upper surface of the motor outer shell is fixedly connected to a mounting seat, the upper surface of the mounting seat is fixedly connected to a motor controller, a fixing plate is fixedly connected to an outer wall on one side of the motor controller, and the fixing plate is fixedly connected to the upper surface of the mounting seat, a delivery end of the motor controller is fixedly connected to a first connection line, the other end of the first connection line is fixedly connected to a microprocessor, and the microprocessor is fixedly connected to the upper surface of the mounting seat, a signal unit is fixedly connected to the upper surface of the microprocessor, a delivery end of the microprocessor is fixedly connected to a second connection line, the other end of the second connection line is fixedly connected to a signal sensor, and the signal sensor is fixedly connected to the upper surface of the mounting seat, a rotary switch and a signal indicator light are fixedly connected to the upper surface of the signal sensor, and a display is provided on the upper surface of the signal sensor.

[0006] As a further technical solution of the present invention, a connecting plate is fixedly connected to the outer wall of one side of the motor housing, a sensor substrate is arranged on the outer wall of one side of the connecting plate, a mounting screw is threadedly connected to the outer wall of one side of the sensor substrate, and the mounting screw is threadedly connected to the connecting plate, a temperature sensor is fixedly connected to the outer wall of one side of the sensor substrate, a sensing end is fixedly connected to the outer wall of one side of the temperature sensor, and the sensing end is sleeved on the outer wall of one side of the motor housing, and an alarm is electrically connected to the outer wall of one side of the temperature sensor.

[0007] As a further technical solution of the present invention, the lower surface of the motor outer shell is fixedly connected to a base, the lower surface of the base is fixedly connected to a base plate, the lower surface of the base plate is fixedly connected to a support rod, a rod expander is fixedly connected to an outer wall on one side of the support rod, the lower surface of the rod expander is fixedly connected to a telescopic rod, and an adjustment knob is fixedly connected to an outer wall on one side of the rod expander.

[0008] As a further technical solution of the present invention, an electronic valve is electrically connected to an outer wall on one side of the temperature sensor, a delivery pipe is fixedly connected to an outer wall on one side of the electronic valve, and the delivery pipe is sleeved on the upper surface of the motor outer shell, one end of the delivery pipe is fixedly connected to a gas storage tank, a mounting ring is sleeved on an outer wall on one side of the gas storage tank, and the mounting ring is fixedly connected to an outer wall on one side of the motor outer shell, and the other end of the delivery pipe is fixedly connected to a spray.

[0009] As a further technical solution of the present invention, a turntable is fixedly connected to the lower surface of the telescopic rod, a mounting piece is fixedly connected to the lower surface of the turntable, a second rotating shaft is sleeved on the outer wall of one side of the mounting piece, a pulley is sleeved on the outer wall of one side of the second rotating shaft, and the pulley is arranged in the mounting piece.

[0010] As a further technical solution of the present invention, a first rotating shaft is fixedly connected to an outer wall of one side of the motor housing, one end of the first rotating shaft is fixedly connected to a fan, a wind shield is sleeved on an outer wall of one side of the fan, and the wind shield is fixedly connected to an outer wall of one side of the motor housing.

[0011] As a further technical solution of the present invention, a permanent magnet is sleeved on one side outer wall of the first rotating shaft, and a rotor guide bar is sleeved on one side outer wall of the permanent magnet.

[0012] As a further technical solution of the present invention, one end of the first rotating shaft is sleeved with a stator core, and the other end of the first rotating shaft is sleeved with a rotor core.

[0013] As a further technical solution of the present invention, an end cover is fixedly connected to the outer wall of one side of the motor housing at a position corresponding to the rotor core, and the rotor core is arranged in the end cover, and a bearing is sleeved on the outer wall of one side of the end cover.

[0014] As a further technical solution of the present invention, a fixing screw is threadedly connected to an outer wall of one side of the bearing, and the fixing screw is threadedly connected to the end cover.

[0015] Compared with the prior art, the invention has the following beneficial effects: the invention is designed with a self-checking mechanism, and uses a signal sensor, a microprocessor and a motor controller to perform real-time monitoring of the permanent magnet synchronous motor, which can effectively analyze the data collected by the signal sensor, and control the motor through the motor controller, thereby reducing the occurrence of abnormal conditions of the equipment during use, effectively handling abnormal conditions of the motor, reducing the possibility of motor failure, and improving the service life of the equipment; at the same time, a cooling device is designed, and a temperature sensor is used in combination with Freon gas to cool the inside of the motor. When it is detected that the temperature inside the motor exceeds the set range, Freon is released through a gas tank to cool the inside of the equipment, thereby avoiding the influence of excessive temperature on the permanent magnet material, thereby improving the service life of the motor, ensuring that the performance of the motor is not affected by temperature, and improving the working efficiency of the motor; a movable positioning base is also designed, and a pulley is used in combination with a telescopic rod to move and fix the motor, so that the motor can be quickly moved to the required installation position, without manual handling, thereby reducing the consumption of manpower, and the telescopic rod can be adjusted according to the required installation height, so that the motor can be quickly positioned and installed, thereby reducing the time required for the positioning and installation of the motor, reducing the cost consumption, and increasing the installation efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from another viewing angle;

[0018] Figure 3 It is a schematic diagram of the three-dimensional cutaway structure of the present invention;

[0019] Figure 4 It is a structural explosion diagram of the present invention;

[0020] Figure 5 for Figure 4 A magnified view of the structure in the middle A area;

[0021] Figure 6 for Figure 4 A magnified view of the structure in the middle B area;

[0022] Figure 7 for Figure 4 A magnified view of the structure of the middle C region;

[0023] Figure 8 for Figure 2 A magnified view of the structure in region D.

[0024] In the figure: 1, fan cover; 2, stator core; 3, permanent magnet; 4, rotor guide bar; 5, rotor core; 6, end cover; 7, motor housing; 8, first rotating shaft; 9, fan; 10, base; 11, bottom plate; 12, bearing; 13, mounting seat; 14, motor controller; 15, fixing plate; 16, first connecting line; 17, signal unit; 18, second connecting line; 19, signal sensor; 20, display; 21, rotary switch; 22, signal indicator 1. Indicator light; 23. Fixing screws; 24. Microprocessor; 25. Gas tank; 26. Mounting ring; 27. Temperature sensor; 28. Sensor substrate; 29. ​​Connecting plate; 30. Alarm; 31. Electronic valve; 32. Delivery pipe; 33. Spray; 34. Sensing terminal; 35. Mounting screws; 36. Support rod; 37. Rod retractor; 38. Telescopic rod; 39. Adjustment knob; 40. Turntable; 41. Mounting piece; 42. Pulley; 43. Second rotating shaft. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please see attached Figure 1 -Attached Figure 8, an embodiment of the present invention: a high-power permanent magnet synchronous motor with a self-checking mechanism, comprising a motor housing 7, a mounting seat 13 is fixedly connected to the upper surface of the motor housing 7, a motor controller 14 is fixedly connected to the upper surface of the mounting seat 13, a fixing plate 15 is fixedly connected to the outer wall of one side of the motor controller 14, and the fixing plate 15 is fixedly connected to the upper surface of the mounting seat 13, a first connecting line 16 is fixedly connected to the conveying end of the motor controller 14, a microprocessor 24 is fixedly connected to the other end of the first connecting line 16, and the microprocessor 24 is fixedly connected to the upper surface of the mounting seat 13, a signal unit 17 is fixedly connected to the upper surface of the microprocessor 24, and the microprocessor The conveying end of the motor housing 24 is fixedly connected with a second connecting line 18, the other end of the second connecting line 18 is fixedly connected with a signal sensor 19, and the signal sensor 19 is fixedly connected to the upper surface of the mounting seat 13, the upper surface of the signal sensor 19 is fixedly connected with a rotary switch 21 and a signal indicator light 22, and the upper surface of the signal sensor 19 is provided with a display 20; a connecting plate 29 is fixedly connected to an outer wall of one side of the motor housing 7, a sensor substrate 28 is arranged on an outer wall of one side of the connecting plate 29, a mounting screw 35 is threadedly connected to an outer wall of one side of the sensor substrate 28, and the mounting screw 35 is threadedly connected to the connecting plate 29, and a temperature sensor 21 is fixedly connected to an outer wall of one side of the sensor substrate 28. A temperature sensor 27 is provided, and a sensing terminal 34 is fixedly connected to an outer wall of one side of the temperature sensor 27, and the sensing terminal 34 is sleeved on an outer wall of one side of the motor housing 7. An alarm 30 is electrically connected to an outer wall of one side of the temperature sensor 27. The mounting screws 35 are used to mount the sensor substrate 28 on the connecting plate 29. The sensing terminal 34 is used to collect data on the temperature change inside the motor. The lower surface of the motor housing 7 is fixedly connected to a base 10, and a bottom plate 11 is fixedly connected to the lower surface of the base 10. A support rod 36 is fixedly connected to the outer wall of one side of the support rod 36, and a rod retractor 37 is fixedly connected to the lower surface of the rod retractor 37. Telescopic rod 38, an adjusting knob 39 is fixedly connected to one side outer wall of the rod retractor 37, and the rod retractor 37 is used with a support rod 36 to adjust the height of the motor; an electronic valve 31 is electrically connected to one side outer wall of the temperature sensor 27, a delivery pipe 32 is fixedly connected to one side outer wall of the electronic valve 31, and the delivery pipe 32 is sleeved on the upper surface of the motor housing 7, one end of the delivery pipe 32 is fixedly connected to the gas storage tank 25, a mounting ring 26 is sleeved on one side outer wall of the gas storage tank 25, and the mounting ring 26 is fixedly connected to one side outer wall of the motor housing 7, the other end of the delivery pipe 32 is fixedly connected to the spray 33, and the electronic valve 31 is used to control the gas in the gas storage tank 25;A turntable 40 is fixedly connected to the lower surface of the telescopic rod 38, and a mounting member 41 is fixedly connected to the lower surface of the turntable 40. A second rotating shaft 43 is sleeved on an outer wall of one side of the mounting member 41, and a pulley 42 is sleeved on an outer wall of one side of the second rotating shaft 43, and the pulley 42 is arranged in the mounting member 41. The turntable 40 is used to complete the steering of the pulley 42; a first rotating shaft 8 is fixedly connected to an outer wall of one side of the motor housing 7, and a fan 9 is fixedly connected to one end of the first rotating shaft 8. A wind cover 1 is sleeved on an outer wall of one side of the fan 9, and the wind cover 1 is fixedly connected to an outer wall of one side of the motor housing 7. The fan 9 is installed at one end of the first rotating shaft 8, and is protected by the wind cover 1. It is used for internal ventilation of the equipment to reduce the rate of temperature increase during the operation of the equipment; a permanent magnet 3 is sleeved on an outer wall of one side of the first rotating shaft 8, and a rotor guide bar 4 is sleeved on an outer wall of one side of the permanent magnet 3. The magnet 3 is used to provide a stable and lasting magnetic field, and the rotor bars 4 are used to conduct electricity and generate rotational torque; one end of the first rotating shaft 8 is sleeved with the stator core 2, and the other end of the first rotating shaft 8 is sleeved with the rotor core 5. The stator core 2 can constitute the main magnetic circuit and fix the stator winding in the motor. The rotor core 5, as a part of the motor magnetic circuit, can place the rotor winding in the core slot; an end cover 6 is fixedly connected to the position of the rotor core 5 on the outer wall of one side of the motor housing 7, and the rotor core 5 is arranged in the end cover 6. A bearing 12 is sleeved on the outer wall of one side of the end cover 6. The bearing 12 is used to support the mechanical rotating body, reduce the friction coefficient during the movement, and ensure the rotation accuracy; a fixing screw 23 is threadedly connected to the outer wall of one side of the bearing 12, and the fixing screw 23 is threadedly connected to the end cover 6, and the fixing screw 23 is used to install the bearing 12. ;

[0027] Working principle: When assembling and using the present invention, first assemble the device, install the permanent magnet 3, the rotor guide bar 4, the stator core 2 and the rotor core 5 through the first rotating shaft 8, and install the fan 1 and the end cover 6 through the motor housing 7, and fix the motor housing 7 through the machine base 10. The bearing 12 on the end cover 6 is installed on the end cover 6 through the fixing screw 23, and the first rotating shaft 8 is connected. The bearing 12 is used to support the mechanical rotating body, reduce the friction coefficient during the movement, and ensure the rotation accuracy. The fan 9 is installed at one end of the first rotating shaft 8, and is protected by the fan 1. It is used for ventilation inside the equipment to reduce the temperature increase rate when the equipment is running. After the main body is installed, the wire in the stator core 2 can be The coil is connected with current, which generates a rotating magnetic field. Pre-magnetized permanent magnets 3 are installed on the rotor core 5. These permanent magnets 3 can generate a strong magnetic field when rotating, thereby providing a larger output torque. The control system of the motor will accurately adjust the current to ensure that the motor rotor can rotate synchronously with the rotating magnetic field and maintain a stable operating state. The stator core 2 can constitute the main magnetic circuit and the important role of fixing the stator winding in the motor. The permanent magnets 3 can provide a stable and lasting magnetic field. The rotor bars 4 can conduct electricity and generate rotational torque. The rotor core 5 is a part of the motor magnetic circuit. The rotor winding can be placed in the core slot. During the operation of the motor, the internal operation of the motor can be monitored by the signal sensor 19 and the display 20 can be used to monitor the internal operation of the motor. The data is displayed, and the signal sensor 19 will flash different signal indicator lights 22 according to the collected data, so as to remind the user of the running status of the motor. The user can adjust the signal sensor 19 by rotating the switch 21, so as to collect data more accurately. The signal sensor 19 can transmit the collected data to the microprocessor 24 through the second connection line 18, calculate and analyze the data through the signal unit 17 thereon, send the instruction to the motor controller 14 through the first connection line 16, and adjust the motor through the motor controller 14, so as to reduce the occurrence of abnormal conditions of the equipment during use, effectively deal with abnormal conditions of the motor, reduce the possibility of motor failure, and increase the service life of the equipment. The controller 14 is mounted on the mounting base 13 through the fixing plate 15, and is connected to the motor housing 7 through the mounting base 13. At the same time, the internal temperature of the motor can be monitored by the temperature sensor 27. The temperature sensor 27 is installed through the sensor substrate 28, the connecting plate 29 and the mounting screws 35, and is connected to the motor housing 7. The temperature sensor 27 collects the internal temperature data of the motor through the sensing terminal 34 thereon, and takes timely action when the temperature is abnormal. When the temperature exceeds the set temperature range, the temperature sensor 27 transmits an electrical signal to the electronic valve 31, so that the electronic valve 31 is opened, and the Freon gas in the gas storage tank 25 is transported through the delivery pipe 32 and spreads to the inside of the motor through the spray 33, so that the motor is cooled down.At this time, the temperature sensor 27 controls the alarm 30 to sound an alarm to remind the user that the temperature is too high, so as to avoid the influence of the excessive temperature on the permanent magnetic material, ensure that the performance of the motor is not affected by the temperature, and improve the working efficiency of the motor. The gas tank 25 is installed on the motor housing 7 through the mounting ring 26. When the motor is moved, the pulley 42 can be pushed by opening the brake pad. The pulley 42 is installed on the mounting member 41 through the second rotating shaft 43. The mounting member 41 can provide protection for the pulley 42. The pulley 42 is turned by the turntable 40, and the movement in different directions can be completed. At the same time, the height of the motor can be adjusted by the rod telescopic device 37. The telescopic rod 38 can be raised or lowered by rotating the adjustment knob 39 until it is adjusted to the appropriate position. The rod telescopic device 37 is connected to the bottom plate 11 through the support rod 36 to complete the adjustment of the motor height.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-power permanent magnet synchronous motor with a self-checking mechanism, comprising a motor outer shell (7), characterized in that: The upper surface of the motor outer shell (7) is fixedly connected to a mounting seat (13), the upper surface of the mounting seat (13) is fixedly connected to a motor controller (14), a fixing plate (15) is fixedly connected to an outer wall on one side of the motor controller (14), and the fixing plate (15) is fixedly connected to the upper surface of the mounting seat (13), a conveying end of the motor controller (14) is fixedly connected to a first connecting line (16), the other end of the first connecting line (16) is fixedly connected to a microprocessor (24), and the microprocessor (24) is fixedly connected to the mounting seat The upper surface of the mounting base (13) is fixedly connected to the upper surface of the microprocessor (24), the upper surface of the microprocessor (24) is fixedly connected to a signal unit (17), the delivery end of the microprocessor (24) is fixedly connected to a second connection line (18), the other end of the second connection line (18) is fixedly connected to a signal sensor (19), and the signal sensor (19) is fixedly connected to the upper surface of the mounting base (13), the upper surface of the signal sensor (19) is fixedly connected to a rotary switch (21) and a signal indicator light (22), and the upper surface of the signal sensor (19) is provided with a display (20).

2. A high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 1, characterized in that: A connecting plate (29) is fixedly connected to one side outer wall of the motor housing (7), a sensor substrate (28) is arranged on one side outer wall of the connecting plate (29), a mounting screw (35) is threadedly connected to one side outer wall of the sensor substrate (28), and the mounting screw (35) is threadedly connected to the connecting plate (29), a temperature sensor (27) is fixedly connected to one side outer wall of the sensor substrate (28), a sensing terminal (34) is fixedly connected to one side outer wall of the temperature sensor (27), and the sensing terminal (34) is sleeved on one side outer wall of the motor housing (7), and an alarm (30) is electrically connected to one side outer wall of the temperature sensor (27).

3. The high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 1, characterized in that: The lower surface of the motor housing (7) is fixedly connected to a base (10), the lower surface of the base (10) is fixedly connected to a bottom plate (11), the lower surface of the bottom plate (11) is fixedly connected to a support rod (36), one side outer wall of the support rod (36) is fixedly connected to a rod expander (37), the lower surface of the rod expander (37) is fixedly connected to a telescopic rod (38), and one side outer wall of the rod expander (37) is fixedly connected to an adjustment knob (39).

4. A high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 2, characterized in that: An electronic valve (31) is electrically connected to an outer wall of one side of the temperature sensor (27); a delivery pipe (32) is fixedly connected to an outer wall of one side of the electronic valve (31), and the delivery pipe (32) is sleeved on the upper surface of the motor outer shell (7); one end of the delivery pipe (32) is fixedly connected to an air storage tank (25); a mounting ring (26) is sleeved on an outer wall of one side of the air storage tank (25), and the mounting ring (26) is fixedly connected to an outer wall of one side of the motor outer shell (7); and the other end of the delivery pipe (32) is fixedly connected to a spray (33).

5. The high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 3 is characterized in that: The lower surface of the telescopic rod (38) is fixedly connected to a rotating disk (40), the lower surface of the rotating disk (40) is fixedly connected to a mounting member (41), a second rotating shaft (43) is sleeved on an outer wall of one side of the mounting member (41), a pulley (42) is sleeved on an outer wall of one side of the second rotating shaft (43), and the pulley (42) is arranged in the mounting member (41).

6. The high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 1, characterized in that: A first rotating shaft (8) is fixedly connected to an outer wall of one side of the motor housing (7); a fan (9) is fixedly connected to one end of the first rotating shaft (8); a wind shield (1) is sleeved on an outer wall of one side of the fan (9); and the wind shield (1) is fixedly connected to an outer wall of one side of the motor housing (7).

7. A high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 6, characterized in that: A permanent magnet (3) is sleeved on one side outer wall of the first rotating shaft (8), and a rotor guide bar (4) is sleeved on one side outer wall of the permanent magnet (3).

8. The high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 6, characterized in that: One end of the first rotating shaft (8) is sleeved with a stator iron core (2), and the other end of the first rotating shaft (8) is sleeved with a rotor iron core (5).

9. The high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 1, characterized in that: An end cover (6) is fixedly connected to a position on the outer wall of one side of the motor housing (7) corresponding to the rotor core (5), and the rotor core (5) is arranged in the end cover (6). A bearing (12) is sleeved on an outer wall of one side of the end cover (6).

10. A high-power permanent magnet synchronous motor with a self-checking mechanism according to claim 9, characterized in that: A fixing screw (23) is threadedly connected to an outer wall of one side of the bearing (12), and the fixing screw (23) is threadedly connected to the end cover (6).

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