A permanent magnet synchronous motor

Abstract

The application discloses a permanent magnet synchronous motor and relates to the technical field of motors; the motor comprises a motor mounting piece, a moving stator piece is installed on the motor mounting piece, and the moving stator piece is used for adjusting a gap; a centrifugal detection piece is installed inside the motor mounting piece; a centrifugal control piece is installed on the motor mounting piece; the centrifugal control piece is used for detecting completion of starting; and the centrifugal control piece is used for pushing the centrifugal detection piece; the moving stator piece can be used for gap adjustment work, ensures starting torque during starting of the structure, and small air gap can reduce magnetic resistance and ensure normal iron loss of a traditional motor after normal speed starting; and the problems that the starting torque of the permanent magnet synchronous motor is poor and the motor is inconvenient to automatically control, standardize and disassemble and overhaul with no load are solved.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to a permanent magnet synchronous motor. Background Technology

[0002] A permanent magnet synchronous motor is a type of synchronous motor that uses permanent magnets instead of traditional excitation windings. It has advantages such as high efficiency and high power density. The synchronization principle lies in the interaction between the rotor permanent magnet magnetic field and the stator magnetic field, which drives the rotor to rotate at a synchronous speed. In the actual use of permanent magnet synchronous motors, it is necessary to ensure safety. Currently, permanent magnet synchronous motors are not easy to automatically control and adjust the stator-rotor gap. In order to ensure heat dissipation and reduce iron loss, the stator and rotor need to maintain a certain gap. It is not easy to automatically control the reduction of the gap when starting the motor, which would reduce magnetic resistance and result in poor starting torque performance. At the same time, it is not easy to assist in indicating the motor shaft rotation deviation, which increases the risk of rotor rubbing. It is also not easy to automatically control the standard to prevent disassembly and maintenance of the motor under load. Manual operation is easy to forget, which can easily cause safety hazards and damage to the motor.

[0003] Therefore, we propose a permanent magnet synchronous motor. Summary of the Invention

[0004] The purpose of this invention is to provide a permanent magnet synchronous motor to solve the problems mentioned in the background art, such as the poor starting torque performance of current permanent magnet synchronous motors and the inconvenience of automatic control specifications to prevent disassembly and maintenance of the motor under load.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a permanent magnet synchronous motor, comprising a motor mounting component, on which a movable stator component is mounted for adjusting clearance; a centrifugal detection component is installed inside the motor mounting component; a centrifugal control component is mounted on the motor mounting component; the centrifugal control component is used to detect start-up completion; the centrifugal control component is used to push the centrifugal detection component; an offset indicator component is installed inside the centrifugal control component; the offset indicator component is used to indicate coaxial offset; a load detection component is mounted on the motor mounting component; four positioning anti-disassembly components are mounted on the motor mounting component; the load detection component is used to prevent disassembly under load; the motor mounting component includes: a motor housing, a rotating shaft, and a rotor; the motor housing has four sliding grooves inside; the rotating shaft is rotatably mounted inside the motor housing; the rotor is fixedly mounted on the rotating shaft; the outer side of the rotor has an inclined structure; the rotor is located inside the motor housing; the tail of the motor housing has a mesh structure.

[0006] Preferably, the motor mounting components further include: a motor frame, a front cover, fastening bolts, a fixing ring, and a buzzer. The end of the front cover is attached to the motor housing. Four fastening bolts are inserted into the front cover, and each of the four fastening bolts passes through the motor housing and is threaded onto the motor frame. Each of the four fastening bolts has an annular groove. A fixing ring is fixedly installed on the front cover. A buzzer is fixedly installed at the front end of the rotating shaft. The fastening bolts pass through the motor housing.

[0007] Preferably, the movable stator component includes: a stator body, a stator tension spring, sliding inserts, and an adjusting electromagnet. The stator body has four sliding strips on its outer side; the stator body is slidably sleeved inside the motor housing; the four sliding strips on the stator body are respectively located in four sliding grooves inside the motor housing; a stator tension spring is fixedly installed at the tail of the stator body, and the end of the stator tension spring is connected inside the motor housing; four sliding inserts are fixedly installed on the stator body, and the four sliding inserts are respectively slidably inserted into the front cover; adjusting electromagnets are fixedly installed at the ends of the four sliding inserts, and the adjusting electromagnets are located on the front side of the front cover; the adjusting electromagnets are aligned with the fixing iron ring; the inner side of the stator body has a sloping structure.

[0008] Preferably, the centrifugal detection component includes: a detection mounting ring, an anti-accidental contact spring, an inner ring, and a power switch. The detection mounting ring is fixedly installed inside the front cover; the anti-accidental contact spring is sleeved inside the detection mounting ring; the inner ring is slidably sleeved inside the detection mounting ring, and the inner side of the inner ring has a beveled structure; the anti-accidental contact spring is connected between the detection mounting ring and the inner ring; a power switch is fixedly installed on the detection mounting ring, and the end of the power switch is attached to the side of the inner ring; the power switch is electrically connected to an adjustable electromagnet.

[0009] Preferably, the centrifugal control component includes: a centrifugal mounting cylinder, a centrifugal counterweight column, and ball bearings. The centrifugal mounting cylinder is fixedly mounted on a rotating shaft. Two centrifugal counterweight columns are slidably inserted into the centrifugal mounting cylinder. Ball bearings are embedded at the ends of the two centrifugal counterweight columns. The two ball bearings are used to roll and fit against the inner side of the inner ring. The ball bearings are used to squeeze the inner ring to move. The centrifugal counterweight column is used for centrifugal expansion.

[0010] Preferably, the offset indicator includes: a detection sleeve and a contact ball. The detection sleeve is fixedly installed inside the centrifugal mounting cylinder, and the detection sleeve has a spherical groove. The two sides of the detection sleeve are respectively connected to the inner sides of two centrifugal counterweight columns by tension springs. The tension springs on both sides of the detection sleeve are located inside the centrifugal mounting cylinder. A contact ball is provided inside the detection sleeve. A gap is provided between the detection sleeve and the contact ball. A battery is provided on the rotating shaft, and the battery, detection sleeve, contact ball and buzzer on the rotating shaft are connected in series.

[0011] Preferably, the offset indicator further includes: rubber bands, two rubber bands are fixedly installed on the electrode ball, and the ends of the two rubber bands are respectively connected to the inner ends of the two centrifugal counterweight columns.

[0012] Preferably, the load detection component includes: a power-connecting fixed cylinder, a movable sleeve, and a load spring. The power-connecting fixed cylinder is fixedly installed on the front side of the front cover; the power-connecting fixed cylinder is located on the outside of the rotating shaft; the inner side of the power-connecting fixed cylinder has an octagonal structure; the movable sleeve is slidably inserted into the power-connecting fixed cylinder; the load spring is fixedly installed at the end of the movable sleeve, and the load spring is sleeved on the inner side of the power-connecting fixed cylinder; the end of the load spring is connected to the front side of the front cover; the outer side of the front end of the power-connecting fixed cylinder is provided with an annular protrusion, and the surface of the annular protrusion on the outer side of the front end of the power-connecting fixed cylinder is provided with a conductive coating.

[0013] Preferably, the load detection component further includes: an outer tube for receiving electricity, on which the movable sleeve is fixedly fitted; an annular protrusion is provided on the inner side of the tail of the outer tube for receiving electricity, and the surface of the annular protrusion at the tail of the outer tube for receiving electricity is provided with a conductive coating; the annular protrusion on the inner side of the tail of the outer tube for receiving electricity is attached to the annular protrusion on the outer side of the front end of the fixed tube for receiving electricity.

[0014] Preferably, the positioning anti-tampering component includes: locking electromagnets and plug-in posts; four locking electromagnets are fixedly installed on the inner side of the front cover; four plug-in posts are slidably inserted into the inner side of the front cover, and the four locking electromagnets and plug-in posts are aligned; springs are connected between the four locking electromagnets and plug-in posts respectively, and the springs are located on the inner side of the front cover; the four plug-in posts are respectively used to slide into the annular grooves on the four fastening bolts; the annular protrusion on the inner side of the tail of the power-connecting outer cylinder, the annular protrusion on the outer side of the front end of the power-connecting fixed cylinder, and the locking electromagnets are connected in series with a power supply.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a movable stator component for gap adjustment, ensuring the starting torque during startup. The smaller air gap reduces magnetic resistance, maximizing magnetic flux density during startup, directly enhancing electromagnetic torque, and ensuring startup stability. Automatic control allows for increasing the air gap between the stator and rotor after startup and once the target speed is reached. This ensures starting torque while maintaining efficient heat dissipation during high-speed shaft rotation. It also prevents rotor wear inside the stator due to impurities or thermal expansion during operation. More importantly, it ensures normal iron loss after startup at normal operating speeds, a characteristic of traditional motors.

[0016] The offset indicator can be used to detect the coaxiality of the shaft during rotation. Once the shaft is bent, it can automatically control and prompt the operation. It is more suitable for high-speed motors, improves safety, and facilitates timely correction or maintenance.

[0017] Using load detection components in conjunction with positioning anti-tampering components can ensure that workers remove the load before removing the front cover, preventing safety hazards caused by directly removing the front cover without removing the load. When the load is not removed, the weight of the load causes the rotor to sink. Removing the front cover without support causes the rotor core to rub directly against the stator windings, resulting in scratches on the winding insulation and inter-turn short circuits. This can ensure that workers follow the proper procedures when repairing and cleaning motors. At the same time, if the load has rotational force, such as if the belt or reducer is not removed, the load may suddenly rotate during maintenance, causing the rotor to rotate and turning the generator back to supply power to the line, creating a risk of electric shock. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a permanent magnet synchronous motor according to the present invention; Figure 2 This is a cross-sectional view of the internal structure of a permanent magnet synchronous motor according to the present invention; Figure 3 This is a partial cross-sectional view of a permanent magnet synchronous motor according to the present invention; Figure 4 This is a schematic diagram of the motor mounting component structure of the present invention; Figure 5 This is a schematic diagram of the moving stator structure of the present invention; Figure 6 This is a schematic diagram of the centrifugal detection element of the present invention; Figure 7 This is a schematic diagram showing the position of the buzzer in this invention; Figure 8 For the present invention Figure 7 Enlarged view of the structure of region B in the middle; Figure 9 For the present invention Figure 2 Enlarged view of the structure of region C in the middle; Figure 10 This is a schematic diagram of the load detection element structure of the present invention; Figure 11 This is a cross-sectional view of the anti-disassembly component structure of the present invention.

[0019] In the diagram: 1. Motor mounting components; 101. Motor housing; 1011. Shaft; 1012. Rotor; 1013. Motor frame; 102. Front cover; 1021. Fastening bolts; 103. Fixing ring; 104. Buzzer; 2. Moving stator components; 201. Stator body; 2011. Stator tension spring; 202. Sliding strip; 203. Adjusting electromagnet; 3. Centrifugal detection components; 301. Detection mounting ring; 302. Anti-accidental contact spring; 3 03. Inner ring; 304. Power switch; 4. Centrifugal control component; 401. Centrifugal mounting cylinder; 402. Centrifugal counterweight column; 403. Ball bearing; 5. Offset indicator; 501. Detection sleeve; 502. Electric ball; 503. Rubber band; 6. Load detection component; 601. Electric fixing cylinder; 602. Moving sleeve; 603. Load spring; 604. Electric outer cylinder; 7. Positioning anti-tamper component; 701. Locking electromagnet; 702. Insertion post. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 11 As shown: This invention provides a technical solution: a permanent magnet synchronous motor, including a motor mounting component 1, a movable stator component 2 mounted on the motor mounting component 1 for adjusting clearance; a centrifugal detection component 3 installed inside the motor mounting component 1; a centrifugal control component 4 mounted on the motor mounting component 1; the centrifugal control component 4 for detecting start-up completion; the centrifugal control component 4 for pushing the centrifugal detection component 3; an offset indicator component 5 installed inside the centrifugal control component 4 for indicating coaxial offset; and a load detection component 6 mounted on the motor mounting component 1. The motor mounting component 1 is equipped with four positioning anti-disassembly components 7; the load detection component 6 is used to prevent disassembly under load; the motor mounting component 1 includes: a motor housing 101, a rotating shaft 1011 and a rotor 1012, the motor housing 101 has four sliding grooves inside; the motor housing 101 has a junction box; the rotating shaft 1011 is rotatably mounted inside the motor housing 101; the rotor 1012 is fixedly mounted on the rotating shaft 1011; the outer side of the rotor 1012 has a beveled structure; the rotor 1012 is located inside the motor housing 101; the tail of the motor housing 101 has a mesh structure.

[0022] The motor mounting component 1 further includes: a motor frame 1013, a front cover 102, fastening bolts 1021, a fixing ring 103, and a buzzer 104. The end of the front cover 102 is attached to the motor housing 101. Four fastening bolts 1021 are inserted into the front cover 102, and the four fastening bolts 1021 pass through the motor housing 101. The four fastening bolts 1021 are threaded onto the motor frame 1013. Each of the four fastening bolts 1021 has an annular groove. The fixing ring 103 is fixedly installed on the front cover 102. The buzzer 104 is fixedly installed at the front end of the rotating shaft 1011. The fastening bolts 1021 pass through the motor housing 101. The movable stator component 2 includes: a stator body 201, a stator tension spring 2011, sliding inserts 202, and an adjusting electromagnet 203. Four sliding strips are provided on the outer side of the stator body 201. The stator body 201 is slidably sleeved on the inner side of the motor housing 101. The four sliding strips on the stator body 201 are respectively located in four sliding grooves on the inner side of the motor housing 101. A stator tension spring 2011 is fixedly installed at the tail of the stator body 201, and the end of the stator tension spring 2011 is connected to the inside of the motor housing 101. Four sliding inserts 202 are fixedly installed on the stator body 201, and the four sliding inserts 202 are slidably inserted into the front cover 102. An adjustable electromagnet 203 is fixedly installed at the end of the 02, and the adjustable electromagnet 203 is located on the front side of the front cover 102; the adjustable electromagnet 203 is aligned with the fixed iron ring 103; the inner side of the stator body 201 has a beveled structure; the centrifugal detection component 3 includes: a detection mounting ring 301, an anti-misoperation spring 302, an inner ring 303, and a power switch 304. The detection mounting ring 301 is fixedly installed inside the front cover 102; the anti-misoperation spring 302 is sleeved inside the detection mounting ring 301; the inner ring 303 is slidably sleeved inside the detection mounting ring 301, and the inner side of the inner ring 303 has a beveled structure; the anti-misoperation spring 302 is connected to the detection mounting ring 301 and the inner ring 304. Between the rings 303; a power switch 304 is fixedly installed on the mounting ring 301, and the end of the power switch 304 is attached to the side of the inner ring 303; the power switch 304 is electrically connected to the adjustable pitch electromagnet 203; the centrifugal control component 4 includes: a centrifugal mounting cylinder 401, centrifugal counterweight columns 402 and ball bearings 403, the centrifugal mounting cylinder 401 is fixedly installed on the rotating shaft 1011; two centrifugal counterweight columns 402 are slidably inserted into the centrifugal mounting cylinder 401; ball bearings 403 are respectively embedded at the ends of the two centrifugal counterweight columns 402; the two ball bearings 403 are respectively used to roll and fit against the inner side of the inner ring 303; the ball bearings 403 are used to squeeze the inner ring 303 to move;The centrifugal counterweight column 402 is used for centrifugal expansion. The movable stator component 2 can be used for gap adjustment. Adjusting the air gap between the stator body 201 and the rotor 1012 ensures the starting torque during startup. A smaller air gap reduces magnetic reluctance, maximizing magnetic flux density during startup, directly enhancing electromagnetic torque and ensuring startup stability. Simultaneously, this structure, in conjunction with the centrifugal control component 4, can automatically control the increase of the air gap between the stator body 201 and the rotor 1012 after the motor starts and reaches the target speed, eliminating the need for manual adjustment. Dynamic control is also possible, ensuring starting torque while maintaining air gap heat dissipation during high-speed rotation of the shaft 1011. This also prevents rotor 1012 from rubbing against the stator body 201 due to impurities or rotor thermal expansion during operation. More importantly, it ensures the normal operation of the traditional motor. After the initial speed is increased, the iron loss is normal, making it more suitable for motors with higher speeds. Increasing the air gap after startup still meets the torque requirements for driving. As the rotor 1012 speed increases, centrifugal force is generated. Once the speed is high, the centrifugal counterweight column 402 can move outward and expand under the action of centrifugal force. This causes the inner ring 303 to be compressed by the rolling balls 403. Pressing the power switch 304 controls the adjusting electromagnet 203 to magnetically fix the iron ring 103. At this time, the adjusting electromagnet 203 will drive the stator body 201 to move and lengthen the stator tension spring 2011. Because the stator body 201 and the inner side of the rotor 1012 have a sloping structure, the slope is set according to requirements. After the stator body 201 moves, the gap between it and the rotor 1012 increases, i.e., the air gap increases. This ensures effective air gap heat dissipation at high speeds and reduces iron loss, maintaining low iron loss in traditional motors while providing greater starting torque.

[0023] The offset indicator 5 includes: a detection sleeve 501 and a contact ball 502. The detection sleeve 501 is fixedly installed inside the centrifugal mounting cylinder 401, and the detection sleeve 501 has a spherical groove. The two sides of the detection sleeve 501 are respectively connected to the inner sides of the two centrifugal counterweight columns 402 by tension springs. The tension springs on both sides of the detection sleeve 501 are located inside the centrifugal mounting cylinder 401. The contact ball 502 is provided inside the detection sleeve 501. There is a gap between the detection sleeve 501 and the contact ball 502. A battery is provided on the rotating shaft 1011. The battery, detection sleeve 501, contact ball 502 and buzzer on the rotating shaft 1011 are all present. The device 104 is connected in series; the offset indicator 5 also includes: rubber bands 503. Two rubber bands 503 are fixedly installed on the ball 502. The ends of the two rubber bands 503 are respectively connected to the inner ends of the two centrifugal counterweight columns 402. The offset indicator 5 can be used to detect the coaxiality of the rotating shaft 1011 during the rotation process. Once the rotating shaft 1011 bends, the automatic control prompt can be realized. It can be more suitable for high-speed motors, improve safety, facilitate timely correction or maintenance, and does not affect the normal centrifugal expansion of the centrifugal counterweight column 402. The structure is more reasonable.

[0024] In Example 2, based on Example 1, the load detection component 6 includes: a power-connecting fixed cylinder 601, a movable sleeve 602, and a load spring 603. The power-connecting fixed cylinder 601 is fixedly installed on the front side of the front cover 102; the power-connecting fixed cylinder 601 is located outside the rotating shaft 1011; the inner side of the power-connecting fixed cylinder 601 has an octagonal structure; the movable sleeve 602 is slidably inserted into the power-connecting fixed cylinder 601; the load spring 603 is fixedly installed at the end of the movable sleeve 602, and the load spring 603 is sleeved on the inner side of the power-connecting fixed cylinder 601; the end of the load spring 603 is connected to the front side of the front cover 102; an annular protrusion is provided on the outer side of the front end of the power-connecting fixed cylinder 601, and the surface of the annular protrusion on the outer side of the front end of the power-connecting fixed cylinder 601 is provided with a conductive coating; the load spring 603 is fixedly installed on the front side of the front cover 102, and the load spring 603 is sleeved on the inner side of the power-connecting fixed cylinder 601. The detection component 6 also includes: an outer tube 604 for receiving electricity, which is fixedly mounted on the movable sleeve 602; an annular protrusion is provided on the inner side of the tail of the outer tube 604, and a conductive coating is provided on the surface of the annular protrusion at the tail of the outer tube 604; the annular protrusion on the inner side of the tail of the outer tube 604 is attached to the annular protrusion on the outer side of the front end of the fixed tube 601; the positioning anti-disassembly component 7 includes: locking electromagnets 701 and plug-in pins 702, four locking electromagnets 701 are fixedly installed on the inner side of the front cover 102; four plug-in pins 702 are slidably inserted into the inner side of the front cover 102, and the four locking electromagnets 701 and plug-in pins 702 are aligned; springs are connected between the four locking electromagnets 701 and plug-in pins 702 respectively, and the springs are located at the front Inside the cover 102; four insertion posts 702 are respectively used to slide into the annular grooves on the four fastening bolts 1021. The width of the annular grooves on the four fastening bolts 1021 is greater than that of the insertion posts 702; the annular protrusion on the inner side of the tail of the power-connecting outer cylinder 604, the annular protrusion on the outer side of the front end of the power-connecting fixed cylinder 601, and the locking electromagnet 701 are connected in series with a power supply. The use of load detection component 6 in conjunction with positioning anti-disassembly component 7 can be used to ensure that the load is removed before the workers remove the front cover 102, avoiding the safety hazards caused by directly removing the front cover 102 without removing the load. The structure is more reasonable and the safety is better. When the load is not removed, the weight of the load causes the rotor to sink. If the front cover is removed without support, the rotor core will directly rub against the stator winding, causing... A short circuit between turns caused by a tear in the winding insulation layer can be used to ensure the standardization of workers during motor maintenance and dust removal. At the same time, if the load has a rotational force, such as if the belt is not removed, the load may suddenly rotate during maintenance, causing the rotor 1012 to rotate and the generator to feed power back to the line, creating a risk of electric shock. By removing the load on the shaft 1011, such as the pulley, the moving sleeve 602 is no longer blocked. The load spring 603 can push the moving sleeve 602 to move outward, driving the power-connecting outer cylinder 604 to move together, so that it can approach and fit against the outer front end of the power-connecting fixed cylinder 601 to achieve power connection. At this time, the locking electromagnet 701 magnetically attaches the plug 702 and retracts, which can release the limit fastening bolt 1021.

[0025] The working principle of this embodiment is as follows: First, the motor frame 1013 is directly welded to the position where this structure needs to be installed. The connection operation can be quickly completed by tightening the bolts 1021. At the same time, after the load is installed on the rotating shaft 1011, it will stop the moving sleeve 602. At this time, the annular protrusion on the inner side of the tail of the power-connecting outer cylinder 604 and the annular protrusion on the outer side of the front end of the power-connecting fixed cylinder 601 are misaligned. The locking electromagnet 701 is in a de-energized state and will insert into the plug pin 702 without being magnetically attracted. The spring between the plug pin 702 and the locking electromagnet 701 can compress the plug pin 702 to insert into the fastening bolt 1021. Within the annular groove, the fastening bolt 1021 is limited to prevent it from coming off. At this time, the operator cannot safely disassemble the fastening bolt 1021. It is necessary to remove the load on the rotating shaft 1011, such as the pulley. At this time, the moving sleeve 602 is no longer blocked. It can be pushed outward by the load spring 603, which will drive the power-connecting outer cylinder 604 to move together, so as to get close to and fit against the outer front end of the power-connecting fixed cylinder 601 to achieve power connection. At this time, the locking electromagnet 701 magnetically attracts the plug 702 to retract, which can release the limit fastening bolt 1021 and allow the fastening bolt 1021 to be disassembled normally. During normal use, when the stator body 201 is energized and generates a magnetic field to control the rotation of the rotor 1012, the air gap between the stator body 201 and the rotor 1012 is small, ensuring torque. As the rotor 1012's speed increases, centrifugal force is generated. Once the speed is high, the centrifugal counterweight column 402 can move outward and expand under the action of centrifugal force. The rolling ball 403 compresses the inner ring 303, causing the inner ring 303 to move inward and compress the anti-accidental contact spring 302, thus pressing the power switch 304. At this time, the power switch 304 controls the pitch adjusting electromagnet 203 to magnetically attract and fix the iron ring 103. The pitch adjusting electromagnet 203 then drives the stator body 201 to move, stretching the stator tension spring 2011. The stator body 201 moves... Afterwards, the gap between the centrifugal counterweight column 402 and the rotor 1012 will increase, that is, the air gap will increase. After the centrifugal counterweight column 402 expands centrifugally, the rubber band 503 will be stretched. If the coaxiality of the shaft 1011 is up to standard, the centrifugal expansion distance of the two centrifugal counterweight columns 402 will be consistent, and the electrostatic ball 502 will still be inside the detection sleeve 501. Conversely, if the coaxiality of the shaft 1011 is not up to standard, the centrifugal expansion distance of the two centrifugal counterweight columns 402 will be inconsistent and will shift. Once the shift exceeds the standard, the electrostatic ball 502 will stick to the inside of the detection sleeve 501 to achieve power connection. At this time, the buzzer 104 will sound to indicate that the staff needs to stop the machine in time. At the same time, the rubber band 503 can be elastically adapted and will not affect the centrifugal expansion displacement of the centrifugal counterweight column 402.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet synchronous motor, comprising a motor mounting component (1), wherein a movable stator component (2) is mounted on the motor mounting component (1), characterized in that: The movable stator component (2) is used to adjust the gap; the motor mounting component (1) has a separator installed inside. Centrifugal detection component (3); a centrifugal control component (4) is installed on the motor mounting component (1); the centrifugal control component (4) is used to detect the completion of startup; the centrifugal control component (4) is used to push the centrifugal detection component (3); The centrifugal control unit (4) is equipped with an offset indicator (5); the offset indicator (5) is used to indicate coaxial offset. The motor mounting component (1) is equipped with a load detection component (6); the motor mounting component (1) is equipped with four positioning anti-disassembly components (7); the load detection component (6) is used to prevent disassembly under load; The motor mounting component (1) includes: a motor housing (101), a rotating shaft (1011), and a rotor (1012). The motor housing (101) has four sliding grooves inside. The rotating shaft (1011) is rotatably mounted inside the motor housing (101). The rotor (1012) is fixedly mounted on the rotating shaft (1011). The outer side of the rotor (1012) has a beveled structure. The tail of the motor housing (101) has a mesh structure. The centrifugal control component (4) includes: a centrifugal mounting cylinder (401), which is fixedly mounted on the rotating shaft (1011); The offset indicator (5) includes: a detection sleeve (501) and a contact ball (502). The detection sleeve (501) is fixedly installed inside the centrifugal mounting cylinder (401), and the detection sleeve (501) is provided with a spherical groove. The two sides of the detection sleeve (501) are respectively connected to the inner sides of two centrifugal counterweight columns (402) by tension springs. The tension springs on both sides of the detection sleeve (501) are respectively located inside the centrifugal mounting cylinder (401). The contact ball (502) is provided inside the detection sleeve (501). There is a gap between the detection sleeve (501) and the contact ball (502). The offset indicator (5) further includes: rubber bands (503), two rubber bands (503) are fixedly installed on the electric ball (502), and the ends of the two rubber bands (503) are respectively connected to the inner ends of the two centrifugal counterweight columns (402).

2. The permanent magnet synchronous motor according to claim 1, characterized in that: The motor mounting component (1) further includes: a motor frame (1013), a front cover (102), fastening bolts (1021), a fixing ring (103), and a buzzer (104). The end of the front cover (102) is attached to the motor housing (101). Four fastening bolts (1021) are inserted into the front cover (102), and the four fastening bolts (1021) pass through the motor housing (101) respectively. The four fastening bolts (1021) are threaded onto the motor frame (1013) respectively. The four fastening bolts (1021) are respectively provided with annular grooves. The fixing ring (103) is fixedly installed on the front cover (102). The buzzer (104) is fixedly installed at the front end of the rotating shaft (1011). The fastening bolts (1021) pass through the motor housing (101).

3. A permanent magnet synchronous motor according to claim 2, characterized in that: The movable stator component (2) includes: a stator body (201), a stator tension spring (2011), a sliding insert (202), and an adjusting electromagnet (203). The stator body (201) has four sliding strips on its outer side; the stator body (201) is slidably sleeved on the inner side of the motor housing (101); the four sliding strips on the stator body (201) are respectively located in four sliding grooves on the inner side of the motor housing (101); a stator tension spring is fixedly installed at the tail of the stator body (201). 2011), and the end of the stator tension spring (2011) is connected to the inside of the motor housing (101); four sliding inserts (202) are fixedly installed on the stator body (201), and the four sliding inserts (202) are respectively slidably inserted into the front cover (102); the ends of the four sliding inserts (202) are fixedly installed with pitch electromagnets (203); the pitch electromagnets (203) are aligned with the fixed iron ring (103); the inner side of the stator body (201) is a sloping structure.

4. A permanent magnet synchronous motor according to claim 3, characterized in that: The centrifugal detection component (3) includes: a detection mounting ring (301), an anti-accidental touch spring (302), an inner ring (303), and a power switch (304). The detection mounting ring (301) is fixedly installed inside the front cover (102). An anti-accidental touch spring (302) is sleeved inside the detection mounting ring (301). An inner ring (303) is slidably sleeved inside the detection mounting ring (301), and the inner side of the inner ring (303) is a sloping structure. The anti-accidental touch spring (302) is connected between the detection mounting ring (301) and the inner ring (303). A power switch (304) is fixedly installed on the detection mounting ring (301), and the end of the power switch (304) is attached to the side of the inner ring (303). The power switch (304) is electrically connected to an adjustable pitch electromagnet (203).

5. A permanent magnet synchronous motor according to claim 4, characterized in that: The centrifugal control component (4) further includes: centrifugal counterweight column (402) and ball bearings (403); two centrifugal counterweight columns (402) are slidably inserted into the centrifugal mounting cylinder (401); ball bearings (403) are respectively embedded at the ends of the two centrifugal counterweight columns (402); the two ball bearings (403) are respectively used to roll and fit against the inner side of the inner ring (303); the ball bearings (403) are used to squeeze the inner ring (303) to move; the centrifugal counterweight column (402) is used for centrifugal expansion.

6. A permanent magnet synchronous motor according to claim 2, characterized in that: The load detection component (6) includes: a power-connecting fixed cylinder (601), a movable sleeve (602), and a load spring (603). The power-connecting fixed cylinder (601) is fixedly installed on the front side of the front cover (102). The power-connecting fixed cylinder (601) is located outside the rotating shaft (1011). The inner side of the power-connecting fixed cylinder (601) has an octagonal structure. The movable sleeve (602) is slidably inserted into the power-connecting fixed cylinder (601). The load spring (603) is fixedly installed at the end of the movable sleeve (602), and the load spring (603) is sleeved on the inner side of the power-connecting fixed cylinder (601). The end of the load spring (603) is connected to the front side of the front cover (102). The outer side of the front end of the power-connecting fixed cylinder (601) is provided with an annular protrusion, and the surface of the annular protrusion on the outer side of the front end of the power-connecting fixed cylinder (601) is provided with a conductive coating.

7. A permanent magnet synchronous motor according to claim 6, characterized in that: The load detection component (6) further includes: an outer tube for receiving electricity (604), on which the outer tube for receiving electricity (604) is fixedly mounted; the inner side of the tail of the outer tube for receiving electricity (604) is provided with an annular protrusion, and the surface of the annular protrusion at the tail of the outer tube for receiving electricity (604) is provided with a conductive coating; the annular protrusion at the inner side of the tail of the outer tube for receiving electricity (604) is attached to the annular protrusion on the outer side of the front end of the fixed tube for receiving electricity (601).

8. A permanent magnet synchronous motor according to claim 7, characterized in that: The positioning anti-tampering component (7) includes: a locking electromagnet (701) and a plug-in post (702). Four locking electromagnets (701) are fixedly installed on the inner side of the front cover (102). Four plug-in posts (702) are slidably inserted into the inner side of the front cover (102), and the four locking electromagnets (701) and plug-in posts (702) are aligned. Springs are connected between the four locking electromagnets (701) and plug-in posts (702), and the springs are located on the inner side of the front cover (102). The four plug-in posts (702) are respectively used to slide into the annular grooves on the four fastening bolts (1021).

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