Alternating-current permanent magnet synchronous servo motor with staggered-pole rotor structure and use method

Abstract

The invention relates to the technical field of motors, in particular to an alternating-current permanent magnet synchronous servo motor with a staggered-pole rotor structure and a using method thereof.The alternating-current permanent magnet synchronous servo motor comprises a motor shell, a stator assembly is fixedly connected into the motor shell, a shaft body is arranged in the motor shell, and the two ends of the shaft body are connected with the motor shell through bearings; a plurality of iron core pieces are fixedly connected to the outer surface of the shaft body, splicing assemblies used for staggered arrangement are arranged in the iron core pieces, a fixing ring rotationally connected with the shaft body is fixedly connected to the interior of the motor shell, a plurality of fan blades used for heat dissipation are arranged on the fixing ring in a divergent mode along the center of the fixing ring, and swing rings are rotationally connected to the two sides of the fixing ring correspondingly; a plurality of acceleration rollers used for abutting against the shaft body are arranged on the inner wall of the swing ring, and a driving assembly used for driving the acceleration rollers to rotate is arranged on the inner wall of the swing ring. Through the design of the swing ring and the acceleration roller in the swing ring, extra driving force can be provided when the shaft body is started, and starting resistance is effectively restrained.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to an AC permanent magnet synchronous servo motor with a staggered pole rotor structure and a use method thereof. Background Art

[0002] AC permanent magnet synchronous servo motors are widely used in industrial control, automation equipment, and high-precision machine tools. With their high efficiency, high stability, and high-precision control characteristics, these motors have become an indispensable component in modern industry. However, with the advancement of science and technology and the continuous improvement of industrial needs, the performance requirements for servo motors are getting higher and higher. In this context, AC permanent magnet synchronous servo motors with staggered pole rotor structures have emerged. Traditional AC permanent magnet synchronous servo motors often face problems such as insufficient torque smoothness and difficulty in suppressing cogging torque harmonics during design and manufacturing. These problems not only affect the control accuracy of the motor, but may also cause vibration and noise in the motor, thereby affecting the overall performance and stability of the equipment. In order to solve these problems, researchers began to explore new rotor structures and design methods, among which the staggered pole rotor structure has become a highly concerned technical solution.

[0003] For example, the patent application with the prior art publication number CN114552823A proposes a staggered pole rotor structure for an AC permanent magnet synchronous servo motor, which is installed between the housing and the stator of the AC permanent magnet synchronous servo motor, and includes a rotating shaft, which is cylindrical as a whole and is located in the middle of the rotor structure; a fixing device, which is composed of bearings on both sides to ensure the smooth rotation of the rotor structure; a mounting device, which is composed of magnetic isolation blocks to prevent the rotating shaft from being magnetized and affecting the rotation of the rotating shaft; a rotor assembly, which is composed of an iron core and a permanent magnet, and the permanent magnet is fixed on the iron core. By staggering the poles of the permanent magnet, the rotor rotates more smoothly and generates less noise, thereby achieving the effect of reducing the vibration of the motor and reducing the noise generated by operation.

[0004] The above-mentioned prior art significantly improves the running stability of the rotor by cleverly staggering the magnetic poles of the permanent magnets. However, in actual application, this staggered rotor structure will encounter relatively large starting resistance when the motor is first started due to its unique structural characteristics. This starting resistance mainly comes from the complex interaction of the permanent magnet magnetic field, as well as the friction and magnetic attraction between the rotor structure and the stator in the initial stage. This resistance may interfere with the smooth operation of the rotor structure, resulting in prolonged starting time, increased energy consumption, and even unnecessary wear on the mechanical parts of the motor. To this end, the present application proposes an AC permanent magnet synchronous servo motor with a staggered pole rotor structure and a method of use. Summary of the invention

[0005] The object of the present invention is to provide an AC permanent magnet synchronous servo motor with a staggered pole rotor structure and a use method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an AC permanent magnet synchronous servo motor with a staggered pole rotor structure, comprising a motor housing, a stator assembly fixedly connected to the inside of the motor housing, a shaft body arranged inside the motor housing, two ends of the shaft body connected to the motor housing through bearings, a plurality of iron core sheets fixedly connected to the outer surface of the shaft body, a plurality of iron core sheets are each provided with a splicing assembly for staggered arrangement, a fixed ring rotatably connected to the shaft body is fixedly connected to the inside of the motor housing, a plurality of fan blades for heat dissipation are divergently arranged along the center of the fixed ring, swing rings are rotatably connected to both sides of the fixed ring, a plurality of acceleration rollers for contacting the shaft body are arranged at the inner wall of the swing ring, and a driving assembly for driving the acceleration rollers to rotate is arranged on the inner wall of the swing ring.

[0007] Preferably, the outer surface of the shaft body located inside the swing ring is fixedly connected to a multi-section arc top ring sleeve, the interior of the swing ring is provided with a plurality of inclined grooves, the plurality of inclined grooves are slidably connected with arc-shaped sliders, the middle end of the arc-shaped slider is rotatably connected to a rolling pulley adapted to the multi-section arc top ring sleeve, the interior of the fixed ring is rotatably connected to a plurality of rotating shafts fixedly connected to the fan blades, and the outer surfaces of the plurality of rotating shafts are fixedly connected to driven wheels connected to a plurality of rolling pulley belts.

[0008] Preferably, a plurality of the inclined grooves are fixedly connected with spring sheets fixedly connected to the arc-shaped sliders, both ends of the plurality of the arc-shaped sliders are rotatably connected with guide rods, and a plurality of guide grooves for the guide rods to rotate are provided inside the two swing rings.

[0009] Preferably, the driving assembly includes a plurality of arc blocks fixedly connected to the inner wall of the swing ring, the plurality of arc blocks respectively abut against a plurality of acceleration rollers, a plurality of cranks for supporting the acceleration rollers are rotatably connected to both sides of the fixed ring, the acceleration rollers are rotatably connected to the cranks, and a torsion spring for driving the crank to reset is sleeved at the connection between the crank and the fixed ring.

[0010] Preferably, a cavity is opened at the groove of the multi-section arc top ring sleeve, and a plurality of slide grooves are fixedly connected in the cavity. A top plate is arranged above the cavity, and the interiors of the plurality of slide grooves are slidably connected with slide seats fixedly connected to the top plate, and the plurality of slide seats are fixedly connected to the interiors of the slide grooves through tension springs, and the interiors of the slide seats are fixedly connected with counterweight balls.

[0011] Preferably, a plurality of convex strips are fixedly connected to the outer surface of the shaft body, and the outer surfaces of the plurality of acceleration rollers are all constructed as rubber strips adapted to the convex strips.

[0012] Preferably, the splicing assembly includes a plurality of splicing blocks fixedly connected to one side of the iron core sheet, the iron core sheet is provided with splicing grooves arranged alternately with the plurality of splicing blocks, one side of the plurality of splicing grooves is constructed as a concave surface, and one side of the plurality of splicing blocks is constructed as a convex surface, the concave surfaces of the plurality of splicing grooves are matched with the convex surfaces of the plurality of splicing blocks, and the length of the splicing block is half the length of the splicing grooves.

[0013] Preferably, a plurality of ventilation holes for heat dissipation are provided inside the plurality of iron core sheets.

[0014] Preferably, one side of the motor housing is fixedly connected to a rear housing, the bottom of the motor housing is fixedly connected to a support, and one end of the shaft extends to the interior of the rear housing and is fixedly connected to a heat dissipation blade.

[0015] The present invention also provides a method for using an AC permanent magnet synchronous servo motor with a staggered pole rotor structure, comprising the following steps: S1. Assemble the motor rotor. First, move two core sheets close to each other and operate the splicing assembly to make the two core sheets staggered and connected. Then, assemble the remaining core sheets in sequence to complete the staggered pole rotor structure. Then, assemble the motor. S2. When the shaft rotates under force, it will drive multiple fan blades to rotate to achieve heat dissipation; S3. When the shaft body continues to rotate, the driving assembly is started to move the acceleration roller downward close to the shaft body. When the acceleration roller moves downward, it rotates and then contacts the surface of the shaft body to transmit its rotational force to the shaft body, providing it with a certain driving force and suppressing the resistance encountered by the shaft body in rotation.

[0016] The present invention provides an AC permanent magnet synchronous servo motor with a staggered pole rotor structure and a method of using the same. Compared with the prior art, the present invention has the following beneficial effects: 1. The motor introduces a splicing assembly (including splicing blocks and splicing slots) so that multiple core sheets can be spliced ​​and installed in a simple and efficient way. This standardized production method reduces the complexity and time cost in the manufacturing process, thereby significantly improving production efficiency. The design of the splicing assembly allows the core sheets to be easily misaligned during the splicing process without the need for complex mechanical operations or additional processing steps. This design simplifies the manufacturing process of staggered-pole rotors, reduces production costs, and improves the manufacturability of the product. The tight fit between the splicing blocks and the splicing slots not only ensures a firm connection between the core sheets, but also enhances the structural stability of the entire rotor. Due to the use of standardized core sheets and splicing assemblies, the assembly process of the motor becomes simple and quick. In addition, if a component needs to be replaced or repaired, it can also be easily disassembled and reinstalled.

[0017] 2. The fan blades on the fixed ring are connected to the belt of the rolling pulley through the rotating shaft and the driven wheel, realizing the heat dissipation mechanism of automatic driving when the shaft rotates. This design not only improves the heat dissipation efficiency, but also ensures the temperature stability of the motor during long-term operation, extending the service life of the motor. At the same time, the heat dissipation effect of the fan blades complements other heat dissipation structures (such as ventilation holes) inside the motor, and together builds an efficient heat dissipation system, effectively reducing the risk of motor failure due to overheating. The swing ring and the acceleration roller design inside it can provide additional driving force when the shaft starts, effectively suppress the starting resistance, and improve the starting smoothness and response speed of the motor. The adaptation design between the acceleration roller and the convex strips on the surface of the shaft increases the friction between the two, making the power transmission more stable and efficient. Through the multi-section arc top ring sleeve and its internal cavity, slide groove, top sheet and counterweight ball design, the intelligent adjustment of the swing ring rotation angle is realized. When the shaft rotates stably, the centrifugal force generated by the counterweight ball will push the top sheet upward, thereby gradually reducing the rotation angle of the swing ring until the auxiliary drive is completely stopped, achieving energy saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the motor housing in the present invention; Figure 3 It is a schematic diagram of the explosion structure of the present invention; Figure 4 It is a structural schematic diagram of the axle body in the present invention; Figure 5 It is a schematic diagram of the explosion structure of multiple iron core sheets in the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the iron core sheet in the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the fixing ring in the present invention; Figure 8 It is a schematic diagram of the structure of the fixing ring in the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the fixing ring in the present invention; Fig.10 It is a schematic diagram of the partial cross-sectional structure of the multi-section arc top ring sleeve in the present invention; Fig.11 For the present invention Fig.10 A schematic diagram of the structure enlargement in the middle; Fig.12 It is a schematic diagram of the explosion structure of the fixed ring and the swing ring in the present invention; Fig.13 It is a schematic diagram of the structure of the swing ring in the present invention; Fig.14 For the present invention Fig.13 A magnified schematic diagram of the structure at B in the middle; Fig.15 It is a schematic diagram of the cross-sectional structure of the fixing ring and the multi-section arc top ring sleeve in the present invention.

[0019] In the figure: 100, motor housing; 101, rear housing; 102, bearing; 103, shaft; 104, iron core; 105, heat dissipation blade; 106, support; 107, stator assembly; 108, permanent magnet; 200, splicing groove; 201, splicing block; 202, ventilation hole; 300, fixing ring; 301, fan blade; 302, rotating shaft; 303, rolling pulley; 304, driven pulley; 305, spring sheet; 306, arc-shaped slider; 307, multi-section arc top ring sleeve; 308, top sheet; 309, slide groove; 310, slide seat; 311, counterweight ball; 312, tension spring; 400, swing ring; 401, guide groove; 402, acceleration roller; 403, arc block; 404, crank; 405, torsion spring; 406, convex strip; 407, guide rod. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1: Please refer to Figure 1 , Figure 2 as well as Figure 3 The present invention provides a technical solution: an AC permanent magnet synchronous servo motor with a staggered pole rotor structure, comprising a motor housing 100, wherein the outer surface of the motor housing 100 is configured with a plurality of heat sinks, a stator assembly 107 is fixedly connected to the inside of the motor housing 100, the stator assembly 107 is fixedly connected to the inside of the motor housing 100 and has a winding, a shaft 103 is arranged inside the motor housing 100, both ends of the shaft 103 are connected to the motor housing 100 through bearings 102, the bearings 102 are located at both ends of the shaft 103 and can effectively support the shaft 103 to make it rotate stably, a plurality of iron core sheets 104 are fixedly connected to the outer surface of the shaft 103, and splicing components for staggered arrangement are arranged in the plurality of iron core sheets 104, a rear housing 101 is fixedly connected to one side of the motor housing 100, a support 106 is fixedly connected to the bottom of the motor housing 100, one end of the shaft 103 extends to the inside of the rear housing 101 and is fixedly connected to a heat sink 105, and the support 106 can support the motor housing 100.

[0022] For further information, see Figure 4 , Figure 5 as well as Figure 6 The splicing assembly includes a plurality of splicing blocks 201 fixedly connected to one side of the iron core sheet 104. The interior of the iron core sheet 104 is provided with splicing grooves 200 which are staggered with the plurality of splicing blocks 201. One side of the plurality of splicing grooves 200 is constructed as a concave surface, and one side of the plurality of splicing blocks 201 is constructed as a convex surface. The concave surfaces of the plurality of splicing grooves 200 and the convex surfaces of the plurality of splicing blocks 201 are mutually adapted. The dimensions of the plurality of iron core sheets 104 are all of a unified standard during construction and production, and the cooperation between the splicing grooves 200 and the splicing blocks 201 can splice and install the plurality of iron core sheets 104, wherein the cooperation between the splicing blocks 201 and the splicing grooves 200 can connect the two iron core sheets 104 together. By setting up the splicing assembly, the production of rotors with staggered poles can be effectively reduced, thereby improving its production efficiency.

[0023] Among them, the length of the splicing block 201 is half the length of the splicing groove 200. At the same time, due to the length of the splicing groove 200, the splicing block 201 can slide inside, thereby adjusting its misalignment angle to improve convenience. Multiple iron core pieces 104 are provided with multiple ventilation holes 202 for heat dissipation inside, and the ventilation holes 202 can be naturally connected when the iron core pieces 104 are staggered, thereby facilitating the discharge of heat.

[0024] Specifically, first, the multiple splicing blocks 201 on one side of an iron core sheet 104 are respectively inserted into the multiple splicing grooves 200 in the other iron core sheet 104, and the two iron core sheets 104 are rotated relative to each other and staggered, so that one end of the multiple splicing blocks 201 is tightly stuck in one end of the splicing groove 200. At this time, the two iron core sheets 104 will be misaligned, and the splicing blocks 201 slide in the splicing groove 200 to tightly insert their convex surfaces into the concave surfaces of the splicing groove 200. The increased friction between the two can effectively achieve fixation, and at this time, the layout of the permanent magnets 108 in the two iron core sheets 104 is also misaligned. Subsequently, the remaining iron core sheets 104 are assembled in the above manner in sequence to complete the complete staggered pole rotor structure, and then the motor can be assembled.

[0025] In summary, the motor enables multiple core pieces 104 to be spliced ​​and installed in a simple and efficient manner by introducing a splicing assembly. This standardized production method reduces the complexity and time cost in the manufacturing process, thereby significantly improving production efficiency. The design of the splicing assembly allows the core pieces 104 to be easily misaligned during the splicing process without the need for complex mechanical operations or additional processing steps. This design simplifies the manufacturing process of the staggered-pole rotor, reduces production costs, and improves the manufacturability of the product. The tight fit between the splicing block 201 and the splicing slot 200 not only ensures a firm connection between the core pieces 104, but also enhances the structural stability of the entire rotor. Due to the use of standardized core pieces 104 and splicing assemblies, the assembly process of the motor becomes simple and quick. In addition, if a component needs to be replaced or repaired, it can also be easily disassembled and reinstalled.

[0026] Example 2: Please refer to Figure 7 , Figure 8 as well as Fig. 9 The present invention also provides a technical solution, which is different from the technical solution of the first embodiment: an AC permanent magnet synchronous servo motor with a staggered pole rotor structure, wherein the interior of the motor housing 100 is fixedly connected with a fixing ring 300 rotatably connected to the shaft body 103, wherein the fixing ring 300 is connected to the interior of the motor housing 100, and the fixing ring 300 is provided with a plurality of fan blades 301 for heat dissipation in a divergent shape along the center thereof, and the fan blades 301 can drive the heat flow in the motor housing 100 to dissipate heat, and the two sides of the fixing ring 300 are respectively rotatably connected There is a swing ring 400, and a plurality of accelerating rollers 402 for contacting the shaft body 103 are arranged on the inner wall of the swing ring 400, wherein the accelerating rollers 402 can rotate and transmit their rotational force to the surface of the shaft body 103, thereby increasing its power when starting. The inner wall of the swing ring 400 is provided with a driving component for driving the accelerating roller 402 to rotate. By setting the driving component, the driving component can be triggered to operate when the shaft body 103 is rotated under force, and the rotational force of the accelerating roller 402 can be transmitted to the shaft body 103, thereby suppressing the resistance it encounters.

[0027] Furthermore, the outer surface of the shaft body 103 located inside the swing ring 400 is fixedly connected to a multi-section arc top ring sleeve 307, and a plurality of inclined grooves are provided inside the swing ring 400, and arc sliders 306 are slidably connected in the plurality of inclined grooves, and the middle end of the arc slider 306 is rotatably connected to a rolling pulley 303 adapted to the multi-section arc top ring sleeve 307, and the interior of the fixed ring 300 is rotatably connected to a plurality of rotating shafts 302 fixedly connected to the fan blades 301, and the outer surfaces of the plurality of rotating shafts 302 are fixedly connected to the plurality of rolling pulleys 303. The driven wheel 304 connected to the shaft 103 will drive the multi-section arc top ring sleeve 307 to rotate together when the shaft body 103 rotates, thereby resisting the rolling pulley 303, so that its rotational force is transmitted to the rolling pulley 303. At the same time, the belt of the rolling pulley 303 is placed inside it and cannot contact the multi-section arc top ring sleeve 307. This makes it easy for the multi-section arc top ring sleeve 307 to drive the rolling pulley 303 to rotate and move. At the same time, the arc top of the multi-section arc top ring sleeve 307 is in a central divergent state, which can effectively realize the continuous rotation and reciprocating push of the rolling pulley 303.

[0028] Among them, see Fig.10 , Fig.11 as well as Fig.12 , a plurality of inclined grooves are fixedly connected with spring sheets 305 fixedly connected with the arc-shaped slider 306, and the spring sheets 305 can exert pressure on the arc-shaped slider 306, so that it squeezes it to reset when it is out of contact with the arc top of the multi-section arc top ring sleeve 307, so that it is closely attached to the surface of the multi-section arc top ring sleeve 307, and stable transmission is achieved. The two ends of the plurality of arc-shaped sliders 306 are rotatably connected with guide rods 407, and the interiors of the two swing rings 400 are provided with a plurality of guide grooves 401 for the guide rods 407 to rotate. The inclined grooves of the fixed ring 300 are in opposite directions to the guide grooves 401, so that when the guide rods 407 move along the inclined groove track of the fixed ring 300, the swing ring 400 can be pushed to rotate, and at the same time, the guide grooves 401 can stably slide and release their longitudinal driving force, so that the swing ring 400 can rotate stably, and the guide grooves 401 cooperate with the guide rods 407, and the reciprocating rotation of the swing ring 400 can be effectively driven by the action of the multi-section arc top ring sleeve 307.

[0029] Furthermore, the driving assembly includes a plurality of arc blocks 403 fixedly connected to the inner wall of the swing ring 400, and the plurality of arc blocks 403 respectively contact with the plurality of accelerating rollers 402. Both sides of the fixed ring 300 are rotatably connected with a plurality of cranks 404 for supporting the accelerating rollers 402. The accelerating rollers 402 are rotatably connected with the cranks 404. The connection between the cranks 404 and the fixed ring 300 is provided with a torsion spring 405 for driving the cranks 404 to reset. When the swing ring 400 rotates back and forth, the arc blocks 403 will be driven to rotate. The block 403 rotates back and forth, and the protruding part of the arc block 403 gradually pushes the acceleration roller 402 downward to drive the crank 404 to rotate, so that the acceleration roller 402 contacts the shaft 103. At the same time, when the arc block 403 contacts the acceleration roller 402, a rotational force will be applied to it. This process is fast and can effectively achieve the friction speed between the arc block 403 and the acceleration roller 402, thereby increasing the rotation speed of the acceleration roller 402, and then realizing power transmission, thereby reducing the resistance encountered by the shaft 103 when it starts.

[0030] It is worth mentioning that when the shaft body 103 is started, it does not need the assistance of the acceleration roller 402. At this time, if multiple acceleration rollers 402 continue to contact the shaft body 103, its efficiency will be affected. Therefore, a cavity is opened at the groove of the multi-section arc top ring sleeve 307, and multiple slide grooves 309 are fixedly connected in the cavity. A top plate 308 is arranged above the cavity. The interiors of the multiple slide grooves 309 are all slidably connected to a slide seat 310 fixedly connected to the top plate 308, and the multiple slide seats 310 are fixedly connected to the interior of the slide groove 309 through a tension spring 312. The interiors of the slide seats 310 are fixedly connected to a counterweight ball 311. When the shaft body 103 rotates stably, centrifugal force will be applied to the counterweight ball 311. And on the slide 310, so that it is subjected to force and pushes out the top plate 308, thereby gradually filling the gap between the two arc tops of the multi-section arc top ring sleeve 307, and then changing the dislocation trajectory of the rolling pulley 303, making it unable to push the swing ring 400 to rotate. After the top plate 308 is pushed, the gap between it and the arc top of the multi-section arc top ring sleeve 307 will not get stuck on the rolling pulley 303. The rolling pulley 303 has a larger diameter and can cross the gap to rotate stably. At the same time, after the rolling pulley 303 is pushed up, the spring sheet 305 will obtain greater pressure to be applied to the arc slider 306, so that the rolling pulley 303 is tightly attached to the surface of the multi-section arc top ring sleeve 307, thereby realizing stable transmission work.

[0031] Among them, see Fig.13 , Fig.14 as well as Fig.15 The outer surface of the shaft body 103 is fixedly connected with a plurality of convex strips 406, and the outer surfaces of the plurality of acceleration rollers 402 are all constructed as rubber strips adapted to the convex strips 406. By setting the convex strips 406 and the rubber strips of the acceleration rollers 402, the friction between the two can be increased, so that when the acceleration rollers 402 contact the shaft body 103, the power can be transmitted more stably, thereby improving the transmission efficiency.

[0032] Specifically, when the motor is started and the shaft body 103 is driven to rotate, the shaft body 103 will drive the multi-section arc top ring sleeve 307 to rotate with it when it starts to rotate. The rotation of the multi-section arc top ring sleeve 307 will continuously resist the rolling pulley 303 to make the arc-shaped slider 306 slide in the inclined groove of the swing ring 400. At the same time, when the multi-section arc top ring sleeve 307 resists the rolling pulley 303, it will drive it to rotate, so that the rolling pulley 303 rotates and the driven pulley 304 rotates through the belt drive, thereby driving the rotating shaft 302 to rotate and drive the multiple fan blades 301 to rotate to achieve heat dissipation. At the same time, the continuous rotation of the multi-section arc top ring sleeve 307 will continuously drive the arc slider 306 to reciprocate in the inclined groove of the swing ring 400. At this time, the movement of the arc slider 306 will drive the guide rod 407 to move with it, so that the guide rod 407 slides in the guide groove 401 and drives the swing ring 400 to reciprocate. When the swing ring 400 reciprocates When rotating, the arc block 403 will be driven to rotate and drive the acceleration roller 402 to move downward. When the arc block 403 moves the acceleration roller 402 downward, it will drive it to rotate and then contact the convex strip 406 on the surface of the shaft body 103 to transmit its rotational force to the shaft body 103, providing it with a certain driving force and suppressing the resistance encountered by the rotation of the shaft body 103, thereby improving the smoothness of the start-up of the shaft body 103. As the multi-section arc top ring sleeve 307 continues to rotate, centrifugal force will be generated. The centrifugal force acting on the counterweight ball 311 will cause the slide seat 310 to move away from the direction of the shaft body 103 and push the top plate 308 to move upward, so that it gradually approaches the arc top of the multi-section arc top ring sleeve 307, thereby reducing the misalignment path of the arc slider 306. At the same time, the arc slider 306 reduces the swinging path and reduces the rotation angle of the swing ring 400, so that the arc block 403 cannot squeeze the acceleration roller 402 to contact the convex strip 406, thereby ensuring the subsequent stable rotation of the shaft body 103.

[0033] In summary, the fan blades 301 on the fixed ring 300 are connected to the belt of the rolling pulley 303 through the rotating shaft 302 and the driven wheel 304, thereby realizing a heat dissipation mechanism that is automatically driven when the shaft body 103 rotates. This design not only improves the heat dissipation efficiency, but also ensures the temperature stability of the motor during long-term operation, thereby extending the service life of the motor. At the same time, the heat dissipation effect of the fan blades 301 complements other heat dissipation structures inside the motor, such as the ventilation holes 202, to jointly construct an efficient heat dissipation system, which effectively reduces the risk of motor failure due to overheating. The swing ring 400 and the acceleration roller 402 inside it are designed to provide additional driving force when the shaft body 103 starts, effectively suppressing the starting resistance and improving the starting smoothness and response speed of the motor. The adaptation design between the acceleration roller 402 and the convex strip 406 on the surface of the shaft body 103 increases the friction between the two, making the power transmission more stable and efficient. The intelligent adjustment of the rotation angle of the swing ring 400 is achieved through the design of the multi-section arc top ring sleeve 307 and the cavity, slide groove 309, top plate 308 and counterweight ball 311 inside it. When the shaft body 103 rotates stably, the centrifugal force generated by the weighted ball 311 will push the top plate 308 upward, thereby gradually reducing the rotation angle of the swing ring 400 until the auxiliary drive is completely stopped, thereby achieving an energy-saving effect.

[0034] Example 3: Please refer to Figures 1 to 15 The present invention also provides a technical solution, which is different from the technical solution of the first embodiment: a method for using an AC permanent magnet synchronous servo motor with a staggered pole rotor structure, comprising the following steps: S1. When assembling the motor rotor, firstly, insert the multiple splicing blocks 201 on one side of one iron core sheet 104 into the multiple splicing grooves 200 in the other iron core sheet 104 respectively, rotate the two iron core sheets 104 relative to each other and stagger them, so that one end of the multiple splicing blocks 201 is tightly stuck in one end of the splicing groove 200, and then the two iron core sheets 104 will be staggered, and then the remaining iron core sheets 104 are assembled in sequence according to the above method to complete the complete staggered pole rotor structure, and then the motor can be assembled; S2. When the motor is started to drive the shaft body 103 to rotate, the shaft body 103 will drive the multi-section arc top ring sleeve 307 to rotate with it when it starts to rotate. The rotation of the multi-section arc top ring sleeve 307 will continuously resist the rolling pulley 303 to make the arc slider 306 slide in the inclined groove of the swing ring 400. At the same time, when the multi-section arc top ring sleeve 307 resists the rolling pulley 303, it will drive it to rotate, so that the rolling pulley 303 rotates and the driven pulley 304 rotates through the belt drive, thereby driving the rotating shaft 302 to rotate and drive the multiple fan blades 301 to rotate to achieve heat dissipation; S3. At the same time, the continuous rotation of the multi-section arc top ring sleeve 307 will continuously drive the arc slider 306 to reciprocate in the inclined groove of the swing ring 400. At this time, the movement of the arc slider 306 will drive the guide rod 407 to move with it, so that the guide rod 407 slides in the guide groove 401 and drives the swing ring 400 to reciprocate. When the swing ring 400 reciprocates, it will drive the arc block 403 to rotate and drive the acceleration roller 402 to move downward. When the arc block 403 moves the acceleration roller 402 downward, it will drive it to rotate and then contact the convex strip 406 on the surface of the shaft body 103 to transmit its rotational force to the shaft body 103, providing it with a certain driving torque to suppress the resistance to the rotation of the shaft body 103, thereby improving the smoothness of the shaft body 103 starting; S4. As the multi-section arc top ring sleeve 307 continues to rotate, centrifugal force will be generated. The centrifugal force acting on the counterweight ball 311 will cause the slide seat 310 to move away from the shaft body 103 and push the top plate 308 upward, making it gradually approach the arc top of the multi-section arc top ring sleeve 307, thereby reducing the misalignment path of the arc slider 306. At the same time, the arc slider 306 reduces the swing path and reduces the rotation angle of the swing ring 400, so that the arc block 403 cannot squeeze the acceleration roller 402 to contact the convex strip 406, thereby ensuring the subsequent stable rotation of the shaft body 103.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An AC permanent magnet synchronous servo motor with a staggered-pole rotor structure, comprising a motor housing (100), Features: The motor housing (100) is fixedly connected to a stator assembly (107) inside, the motor housing (100) is provided with a shaft (103) inside, the two ends of the shaft (103) are connected to the motor housing (100) via bearings (102), the outer surface of the shaft (103) is fixedly connected to a plurality of core sheets (104), the plurality of core sheets (104) are each provided with a splicing assembly for staggered arrangement, and the motor housing (100) is fixedly connected to the inside. A fixed ring (300) is rotatably connected to a shaft body (103); a plurality of fan blades (301) for heat dissipation are arranged in a divergent manner along the center of the fixed ring (300); swing rings (400) are rotatably connected to both sides of the fixed ring (300); a plurality of accelerating rollers (402) for contacting the shaft body (103) are arranged on the inner wall of the swing ring (400); and a driving component for driving the accelerating rollers (402) to rotate is arranged on the inner wall of the swing ring (400).

2. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 1, Features: The outer surface of the shaft body (103) located inside the swing ring (400) is fixedly connected to a multi-section arc top ring sleeve (307), the swing ring (400) is provided with a plurality of inclined grooves inside, and the plurality of inclined grooves are slidably connected to an arc-shaped slider (306), the middle end of the arc-shaped slider (306) is rotatably connected to a rolling pulley (303) adapted to the multi-section arc top ring sleeve (307), the interior of the fixed ring (300) is rotatably connected to a plurality of rotating shafts (302) fixedly connected to the fan blades (301), and the outer surfaces of the plurality of rotating shafts (302) are fixedly connected to driven wheels (304) connected to the plurality of rolling pulleys (303) by belts.

3. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 2, Features: A spring sheet (305) fixedly connected to the arc-shaped slider (306) is fixedly connected in each of the plurality of inclined grooves; guide rods (407) are rotatably connected at both ends of the plurality of arc-shaped sliders (306); and a plurality of guide grooves (401) for the guide rods (407) to rotate are provided inside the two swing rings (400).

4. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 3, Features: The driving assembly comprises a plurality of arc blocks (403) fixedly connected to the inner wall of the swing ring (400), the plurality of arc blocks (403) respectively abutting against a plurality of accelerating rollers (402), a plurality of cranks (404) for supporting the accelerating rollers (402) are rotatably connected to both sides of the fixed ring (300), the accelerating rollers (402) are rotatably connected to the cranks (404), and a torsion spring (405) for driving the cranks (404) to return to their original position is sleeved at the connection between the cranks (404) and the fixed ring (300).

5. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 2, Features: A cavity is provided at the groove of the multi-section arc top ring sleeve (307), and a plurality of slide grooves (309) are fixedly connected in the cavity. A top plate (308) is arranged above the cavity, and a slide seat (310) fixedly connected to the top plate (308) is slidably connected inside the plurality of slide grooves (309), and the plurality of slide seats (310) are fixedly connected to the inside of the slide grooves (309) via tension springs (312), and a counterweight ball (311) is fixedly connected inside the slide seat (310).

6. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 2, Features: The outer surface of the shaft body (103) is fixedly connected with a plurality of convex strips (406), and the outer surfaces of the plurality of accelerating rollers (402) are all constructed as rubber strips adapted to the convex strips (406).

7. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 1, Features: The splicing assembly comprises a plurality of splicing blocks (201) fixedly connected to one side of an iron core sheet (104); the iron core sheet (104) is provided with splicing grooves (200) arranged in an alternating manner with the plurality of splicing blocks (201); one side of the plurality of splicing grooves (200) is configured as a concave surface; and one side of the plurality of splicing blocks (201) is configured as a convex surface; the concave surfaces of the plurality of splicing grooves (200) and the convex surfaces of the plurality of splicing blocks (201) are mutually adapted; and the length of the splicing blocks (201) is half the length of the splicing grooves (200).

8. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 1, Features: A plurality of ventilation holes (202) for heat dissipation are provided inside each of the plurality of iron core sheets (104).

9. The AC permanent magnet synchronous servo motor with a staggered pole rotor structure according to claim 1, Features: One side of the motor housing (100) is fixedly connected to a rear housing (101), the bottom of the motor housing (100) is fixedly connected to a support (106), and one end of the shaft (103) extends to the interior of the rear housing (101) and is fixedly connected to a heat dissipation blade (105).

10. A method for using an AC permanent magnet synchronous servo motor with a staggered pole rotor structure, according to any one of claims 1 to 9, It is characterized in that The following steps are involved: S1, assembling the motor rotor, firstly bringing two core sheets (104) close together to operate the splicing assembly so that the two core sheets (104) are misaligned to complete the connection, then assembling the remaining core sheets (104) in sequence to complete the complete staggered-pole rotor structure, and then assembling the motor; S2. When the shaft (103) is rotated under force, it drives the plurality of fan blades (301) to rotate to achieve heat dissipation; S3. When the shaft (103) continues to rotate, the driving component is started to move the acceleration roller (402) downward to approach the shaft (103). When the acceleration roller (402) moves downward, it rotates and then contacts the surface of the shaft (103) to transmit its rotational force to the shaft (103), thereby providing a certain driving force and suppressing the resistance encountered by the rotation of the shaft (103).

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