WO2022062302A1 - 90° halbach-arranged double-layer permanent magnet rotor magnetic coupler - Google Patents
90° halbach-arranged double-layer permanent magnet rotor magnetic coupler Download PDFInfo
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- WO2022062302A1 WO2022062302A1 PCT/CN2021/075183 CN2021075183W WO2022062302A1 WO 2022062302 A1 WO2022062302 A1 WO 2022062302A1 CN 2021075183 W CN2021075183 W CN 2021075183W WO 2022062302 A1 WO2022062302 A1 WO 2022062302A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
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- the invention relates to the technical field of transmission in mechanical engineering, and relates to a transmission device for realizing torque transmission through non-contact connection, in particular to a 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupling. It can realize the stepless speed regulation of the load by adjusting the thickness of the air gap between the double-layer composite permanent magnet rotor and the conductor rotor or changing the relative rotation angle between the two permanent magnet disks or the combination of the two.
- Magnetic couplings are mainly used in various types of fans, water pumps, material conveyors, bucket elevators, ball mills, winches, crushers, mixers, straightening machines and other mechanical equipment.
- the magnetic coupler relies on electromagnetic induction to generate electromagnetic torque to achieve the purpose of transmission, and realizes the contactless transmission of force and torque through the magnetic field coupling in the air gap. Compared with the traditional hydraulic coupler, it has contactless transmission and overload protection. And the advantages of high transmission efficiency, in which the speed-regulating magnetic coupler can realize the stepless speed regulation of the load by adjusting the thickness of the air gap between the active and driven rotors without stopping.
- the paper "Analysis on a novel flux adjustable permanent magnet coupler with a double-layer permanent magnet rotor" published in the journal IEEE TRANSACTIONS ON MAGNETICS discloses an A magnetic coupler whose speed is regulated by the relative rotation angle between the permanent magnet disks.
- the permanent magnet disks are formed of permanent magnet blocks arranged at intervals, yoke iron blocks are arranged between the N and S pole permanent magnets, and the permanent magnets are magnetized in the circumferential direction. Because the yoke block has the function of gathering the magnetic field lines, the axial magnetic density at the working air gap can be enhanced, but the utilization rate of the permanent magnet is not high in the way of using the yoke block to enhance the working air gap proposed in this document.
- the two permanent magnet disks are not separated by a casing, which is easy to cause the two disks to be sucked and unable to rotate relative to each other.
- the present invention proposes a double-layer permanent magnet rotor magnetic coupler with a 90°Halbach arrangement, which can change the thickness of the air gap between the driving rotor and the driven rotor and change the air gap between the two permanent magnet disks.
- the relative rotation angle is combined in two ways to adjust the speed.
- One permanent magnet disk in the double-layer composite permanent magnet rotor is wrapped with an aluminum casing, separated from the other permanent magnet disk, and has a distance of 3-5mm to realize the relative rotation between the two permanent magnet disks, thereby Change the direction of the magnetic lines of force and change the magnetic induction intensity between the double-layer composite permanent magnet rotor and the conductor rotor.
- a 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler is composed of a double-layer composite permanent magnet rotor and a conductor rotor.
- the double-layer composite permanent magnet rotor is composed of two relatively rotatable permanent magnet disks. The magnet disks are all arranged in a 90°Halbach array, and the magnetization directions in one cycle are left, up, right, and down.
- This arrangement can enhance the axial magnetic density of the working air gap of the coupler and transmit larger torque, and improve the utilization rate of permanent magnets, one permanent magnet disk is embedded in the aluminum shell and fixed on the second yoke disk by welding, and the other permanent magnet disk is embedded in the groove of the outer connecting ring, and the external connection
- the ring material is aluminum
- the magnetic permeability is similar to that of the air
- the magnetic field lines will not be cut off.
- the two disks are separated by an aluminum casing and have a distance of 3-5mm to facilitate relative rotation, thereby changing the direction of the magnetic field lines and changing the double layer.
- the yoke material in the conductor rotor adopts soft ferrite, which can effectively enhance the axial magnetic density at the working air gap and improve the transmission torque. Due to the principle of electromagnetic induction, the double-layer composite permanent magnet rotor can be used as the active end to drive the conductor rotor to rotate, and vice versa.
- the first one is to change the thickness of the air gap between the permanent magnet disc embedded in the groove of the outer connecting ring in the double-layer composite permanent magnet rotor and the conductor ring in the conductor rotor, and at the same time change the working air gap.
- the second is to change the two permanent magnet disks in the double-layer composite permanent magnet rotor. The relative rotation angle between them also changes the magnetic induction intensity of the working air gap and adjusts the speed.
- the magnetization directions of the permanent magnets at the corresponding positions on the two permanent magnet discs are the same, and the working air gap
- the magnetic induction intensity is the largest at this time, and the torque that can be transmitted is the largest at this time, which is the initial situation; when the permanent magnet disk embedded in the aluminum casing rotates a permanent magnet disk relative to the other permanent magnet disk on the basis of the initial situation.
- the magnet corresponds to the central angle of the circle, and the magnetic induction intensity at the working air gap is smaller than the magnetic induction intensity in the initial situation, and the torque that can be transmitted at this time is reduced; when the permanent magnet disk embedded in the aluminum shell is on the basis of the initial situation
- the magnetic induction intensity at the working air gap is the smallest when the two permanent magnets rotate through the corresponding central angle of the other permanent magnet disk, and the torque that can be transmitted at this time is the smallest.
- the relative position of the two permanent magnet rotors can be changed from the initial position when the magnetization directions of the permanent magnets on the two permanent magnet disks are the same to that of one permanent magnet rotor rotating over the two permanent magnets relative to the other permanent magnet disk.
- the speed regulation is realized by the change of the relative rotation angle between the two permanent magnet discs; the third is the compound speed regulation by simultaneously changing the thickness of the air gap and the relative rotation angle.
- the mechanism that can make the two permanent magnet disks rotate relative to each other is as follows: the permanent magnet disk embedded in the aluminum shell is fixed on the second yoke iron disk by welding and connected with the driving shaft by a key, and the permanent magnet disk embedded in the groove of the outer connecting ring is fixed on the second yoke iron disk by welding.
- the permanent magnet disc is connected with the sleeve by welding, the pin of the dial is in contact with the wall of the inclined groove of the sleeve and the wall of the straight groove of the driving shaft. The relative rotational position between the two permanent magnet disks.
- the present invention combines the two methods of changing the thickness of the air gap between the active rotor and the driven rotor and changing the relative rotation angle between the two permanent magnet disks for speed regulation, which can more accurately adjust the load steplessly. speed.
- One permanent magnet disk in the double-layer composite permanent magnet rotor of the present invention is wrapped by an aluminum casing, separated from the other permanent magnet disk, and has a distance of 3-5mm, which can realize the connection between the two permanent magnet disks. The relative rotation between them will not stick to each other, which ensures the safety of the equipment.
- the permanent magnet arrangement of the permanent magnet rotor in the present invention is a 90°Halbach arrangement, which can enhance the axial magnetic density of the working air gap of the coupler, transmit greater torque, and improve the utilization rate of the permanent magnets .
- the yoke material of the conductor rotor in the present invention adopts soft ferrite, which can effectively enhance the axial magnetic density at the working air gap and improve the transmission torque.
- FIG. 1 is a schematic diagram of the working principle and structural cross-section of a 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler according to an embodiment.
- FIG. 2 is a 1/4 cross-sectional view of a three-dimensional structure of a 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler according to an embodiment.
- FIG 3 is a schematic cross-sectional view of the double-layer composite permanent magnet rotor of the embodiment, the combination of the aluminum casing and the conductor rotor.
- FIG. 4 is a top view of a permanent magnet disk in a 90°Halbach arrangement according to an embodiment.
- FIG. 5( a ) is a diagram showing the direction of the magnetic force lines when the magnetization directions of the permanent magnets at the corresponding positions of the two permanent magnet disks of the embodiment are the same.
- FIG. 5( b ) is a diagram showing the direction of magnetic force lines when two permanent magnet disks of the embodiment relatively rotate one permanent magnet corresponding to the central angle on the basis of the initial situation.
- FIG. 5( c ) is a diagram showing the direction of the magnetic force lines when the two permanent magnet disks of the embodiment relatively rotate on the basis of the initial condition corresponding to the center angle of the circle.
- FIG. 6( a ) is a schematic diagram of the three-dimensional structure of the permanent magnet rotor and the conductor rotor when the two permanent magnet disks of the embodiment have the same magnetization direction of the permanent magnets at the corresponding positions.
- Figure 6(b) is a schematic diagram of the three-dimensional structure of the permanent magnet rotor and the conductor rotor when the two permanent magnet disks of the embodiment relatively rotate one permanent magnet corresponding to the central angle on the basis of the initial situation.
- FIG. 6( c ) is a schematic diagram of the three-dimensional structure of the permanent magnet rotor and the conductor rotor when the two permanent magnet disks of the embodiment relatively rotate on the basis of the initial condition corresponding to the center angle of the two permanent magnets.
- FIG. 7 is a three-dimensional exploded view of the combination of the double-layer composite permanent magnet rotor, the aluminum casing and the conductor rotor according to the embodiment.
- FIG. 8 is a three-dimensional assembly drawing of the combination of the double-layer composite permanent magnet rotor, the aluminum casing and the conductor rotor of the embodiment.
- FIG. 9( a ) is a three-dimensional assembly drawing of the solid disc conductor rotor of the embodiment.
- Fig. 9(b) is a three-dimensional assembly drawing of the squirrel-cage disc conductor rotor of the embodiment.
- FIG. 10 is a three-dimensional structural diagram of the outer connecting ring of the embodiment.
- FIG. 11 is a three-dimensional structural diagram of the rotating shaft of the embodiment.
- FIG. 12 is a three-dimensional structural diagram of the sleeve of the embodiment.
- the rotating end 1 includes a double-layer composite permanent magnet rotor, an aluminum casing 5, an outer connecting ring 6, a second yoke disk 12, a sleeve 7, a driving shaft 9, a dial block 10, a dial
- the double-layer composite permanent magnet rotor is composed of two permanent magnet disks that are arranged at 90°Halbach and can rotate relative to each other.
- the first permanent magnet disk 13 is in one cycle
- the magnetization direction of the magnet is magnetized according to the directions of left, top, right and bottom.
- the first permanent magnet disk 13 is embedded in the aluminum casing 5, and the second permanent magnet disk 14 is embedded in the groove of the outer connecting ring 6.
- the aluminum casing 5 is separated and has a distance of 3-5mm, so as to facilitate relative rotation, thereby changing the direction of the magnetic field lines, changing the permanent magnet rotor embedded in the groove of the outer connecting ring between the permanent magnet disc and the conductor ring in the conductor rotor
- the first permanent magnet disk 13 is fixed on the back of the second yoke disk 12 by welding the aluminum shell 5 and the second yoke disk 12, and the second yoke disk 12 is connected with the driving shaft 9 through the key 8
- the second permanent magnet disc 14 is embedded in the groove of the outer connecting ring 6, the outer connecting ring 6 and the sleeve 7 are connected together by welding, the inclined groove wall of the sleeve 7 and the straight groove wall of the driving shaft 9 are connected with the block pin 11 is in contact with each other
- the dial block 10 is installed on the dial block pin 11, and by pushing the dial block pin 11 to move left and right, the relative rotational position between the two permanent magnet disks is changed at the same time.
- the rotating end II includes a conductor rotor and a driven shaft 3.
- the conductor rotor consists of a first yoke disk 2 and a conductor ring 1.
- the conductor ring 1 can be a squirrel cage conductor ring or a solid conductor ring.
- the conductor ring 1 is welded by welding. It is closely attached to the first yoke plate 2, the yoke plate 2 is connected with the driven shaft 3 through the key 4, and the yoke material is made of soft ferrite, which can effectively enhance the magnetic induction intensity at the working air gap and improve the transmission rotation. moment.
- FIG. 5 it is a schematic diagram of the three-dimensional structure of the double-layer composite permanent magnet rotor and the conductor rotor under different conditions.
- Figure 5(a) it is a schematic diagram of the three-dimensional structure of the double-layer composite permanent magnet rotor and the conductor rotor in the initial situation. At this time, the two permanent magnet disks have the same permanent magnet magnetization direction at the corresponding position.
- FIG. 5( b ) it is a three-dimensional structural schematic diagram of the first permanent magnet disk 13 embedded in the aluminum casing, when the first permanent magnet disk 13 is rotated relative to the second permanent magnet disk 14 by a corresponding central angle of the permanent magnet on the basis of the initial situation , as shown in FIG. 5( c ), it is the three-dimensional image of the first permanent magnet disk 13 embedded in the aluminum casing when the first permanent magnet disk 13 is rotated relative to the second permanent magnet disk 14 through the corresponding central angle of the two permanent magnets.
- the present invention has three speed regulation modes.
- the first one is to change the thickness of the air gap between the second permanent magnet disc 14 embedded in the groove of the outer connecting ring in the double-layer composite permanent magnet rotor and the conductor ring in the conductor rotor.
- the magnetic induction intensity of the working air gap is changed, and the speed is adjusted.
- the second is to change the double-layer composite permanent magnet rotor.
- the relative rotation angle between the two permanent magnet discs in the middle changes the magnetic induction intensity of the working air gap at the same time, and the speed is adjusted.
- the two permanent magnets when there is no relative rotation between the two permanent magnet discs, the two permanent magnets
- the magnetization directions of the permanent magnets at the corresponding positions on the disk are the same, the magnetic induction intensity is the largest at the working air gap, and the torque that can be transmitted is the largest at this time.
- the first permanent magnet disk 13 in the casing is rotated relative to the second permanent magnet disk 14 by a corresponding central angle of the permanent magnet on the basis of the initial situation, and the magnetic induction intensity at the working air gap is smaller than the magnetic induction intensity in the initial situation.
- the torque that can be transmitted is reduced; as shown in Figure 6(c), when the first permanent magnet disk 13 embedded in the aluminum casing rotates two times relative to the second permanent magnet disk 14 on the basis of the initial situation
- the permanent magnet corresponds to the center angle
- the magnetic induction intensity at the working air gap is the smallest
- the torque that can be transmitted at this time is the smallest.
- the relative position of the two permanent magnet rotors can be changed from the initial position when the magnetization directions of the permanent magnets on the two permanent magnet discs are the same to that of one permanent magnet rotor rotating over the two permanent magnets relative to the other permanent magnet disc.
- the speed regulation is realized by the change of the relative rotation angle between the two permanent magnet discs; the third is the compound speed regulation by simultaneously changing the thickness of the air gap and the relative rotation angle.
- the first permanent magnet disk 13 is embedded in the aluminum casing 5, and the second permanent magnet disk 14 and the first permanent magnet disk 13 are separated by the aluminum casing 5 with 3- 5mm spacing to facilitate relative rotation, thereby changing the direction of the magnetic field lines and changing the magnetic induction intensity between the second permanent magnet disk 14 and the conductor ring 1 in the conductor rotor.
- the conductor rotor consists of a first yoke disk 2 and a conductor ring 1.
- the conductor ring 1 can be a squirrel cage conductor ring or a solid conductor ring.
- the conductor ring 1 is closely attached to the first yoke by welding.
- the first yoke iron plate 2 is connected with the driven shaft 3 through the key 4, and the yoke iron material adopts soft ferrite, which can effectively enhance the magnetic induction intensity at the working air gap and improve the transmission torque.
- FIG. 10 which is a three-dimensional structural diagram of the outer connecting ring 6 , there are grooves in the outer connecting ring of the permanent magnet disk 14 for fixing the second permanent magnet disk 14 , the outer connecting ring is connected with the sleeve 7 by welding, and the outer connecting ring is The material of the connecting ring 6 is aluminum, the magnetic permeability is similar to that of air, and the magnetic field lines will not be cut off, so it will not affect the transmission of the magnetic field between the double-layer composite permanent magnet rotor and the conductor rotor.
- FIG. 11 and FIG. 12 which are three-dimensional structural diagrams of the driving shaft 9 and the sleeve 7
- the first permanent magnet disc 13 embedded in the aluminum casing is fixed on the second yoke disc 12 by welding
- the key 8 Connected with the driving shaft 9, the second permanent magnet disc 14 embedded in the groove of the outer connecting ring is connected with the sleeve 7 by welding
- the dial pin 11 is connected to the inclined groove wall of the sleeve 7 and the straight groove wall of the driving shaft 9
- the toggle block 10 is installed on the toggle block pin 11, which can push the toggle block pin 11 to move left and right, while changing the relative rotational position between the two permanent magnet disks.
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Abstract
The present invention relates to the technical field of transmission in mechanical engineering, in particular to a 90° Halbach-arranged double-layer permanent magnet rotor magnetic coupler. The magnetic coupler can perform speed regulation by combining two ways: changing the thickness of an air gap between a driving rotor and a driven rotor and changing a relative rotation angle between two permanent magnet disks. Alternatively, the speed regulation can be performed by changing the relative rotation angle between the two permanent magnet disks or combining the two ways. One permanent magnet disk in a double-layer composite permanent magnet rotor is wrapped in an aluminum housing, and separated from the other permanent magnet disk by a 3-5 mm spacing to realize relative rotation between the two permanent magnet disks, thereby changing the direction of magnetic force lines, changing the magnetic induction intensity between the double-layer composite permanent magnet rotor and a conductor rotor, and then changing the transmission torque to achieve the purpose of stepless speed regulation.
Description
本发明涉及机械工程中的传动技术领域，是一种通过非接触性连接实现力矩传递的传动装置，具体是一种90°Halbach排布双层永磁转子磁力耦合器。它可以通过调节双层复合永磁体转子和导体转子之间的气隙厚度或改变两永磁体盘间的相对转动角度或两者复合，实现对负载的无级调速。The invention relates to the technical field of transmission in mechanical engineering, and relates to a transmission device for realizing torque transmission through non-contact connection, in particular to a 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupling. It can realize the stepless speed regulation of the load by adjusting the thickness of the air gap between the double-layer composite permanent magnet rotor and the conductor rotor or changing the relative rotation angle between the two permanent magnet disks or the combination of the two.
近年来，随着永磁材料的发展，磁力耦合器的结构被提出用来代替传统的调速设备。磁力耦合器主要应用在不同类型各种风机、水泵、物料输送机、斗式提升机、球磨机、卷扬机、破碎机、搅拌机、绞直机等各种机械设备上。In recent years, with the development of permanent magnet materials, the structure of the magnetic coupler has been proposed to replace the traditional speed control equipment. Magnetic couplings are mainly used in various types of fans, water pumps, material conveyors, bucket elevators, ball mills, winches, crushers, mixers, straightening machines and other mechanical equipment.
磁力耦合器依靠电磁感应产生电磁转矩达到传动的目的，通过气隙中磁场耦合作用实现力和转矩的无接触传递，与传统液力耦合器相比，具有无接触式传动、过载保护作用和传动效率高的优点，其中调速型磁力耦合器在不停机的情况下，可通过调节主动和从动转子之间的气隙厚度，实现对负载的无级调速。The magnetic coupler relies on electromagnetic induction to generate electromagnetic torque to achieve the purpose of transmission, and realizes the contactless transmission of force and torque through the magnetic field coupling in the air gap. Compared with the traditional hydraulic coupler, it has contactless transmission and overload protection. And the advantages of high transmission efficiency, in which the speed-regulating magnetic coupler can realize the stepless speed regulation of the load by adjusting the thickness of the air gap between the active and driven rotors without stopping.
在IEEE TRANSACTIONS ON MAGNETICS期刊上发表的文献“Analysis on a novel flux adjustable permanent magnet coupler with a double-layer permanent magnet rotor”公开了一种可以通过调节主动和从动转子之间的气隙厚度或改变两永磁体盘间的相对转动角度进行调速的磁力耦合器，永磁体盘由永磁体块间隔排布而成，N、S极永磁体间布置有轭铁块且永磁体采用周向充磁的方法，由于轭铁块有聚拢磁感线的作用，因此可以增强工作气隙处的轴向磁密，但是在该文献所提的采用轭铁块增强工作气隙的方式下永磁体利用率不高。两永磁体盘之间没有用外壳隔开，容易导致两盘吸住而无法相对转动。The paper "Analysis on a novel flux adjustable permanent magnet coupler with a double-layer permanent magnet rotor" published in the journal IEEE TRANSACTIONS ON MAGNETICS discloses an A magnetic coupler whose speed is regulated by the relative rotation angle between the permanent magnet disks. The permanent magnet disks are formed of permanent magnet blocks arranged at intervals, yoke iron blocks are arranged between the N and S pole permanent magnets, and the permanent magnets are magnetized in the circumferential direction. Because the yoke block has the function of gathering the magnetic field lines, the axial magnetic density at the working air gap can be enhanced, but the utilization rate of the permanent magnet is not high in the way of using the yoke block to enhance the working air gap proposed in this document. The two permanent magnet disks are not separated by a casing, which is easy to cause the two disks to be sucked and unable to rotate relative to each other.
发明内容SUMMARY OF THE INVENTION
针对上述技术问题，本发明提出了一种90°Halbach排布的双层永磁转子磁力耦合器，它可以将改变主动转子和从动转子之间的气隙厚度与改变两永磁体盘间的相对转动角度两种方式复合进行调速。双层复合永磁体转子中的一个永磁体盘采用铝制外壳将其包裹，与另一个永磁体盘隔开，并留有3-5mm间距，以实现两永磁体盘之间的相对转动，从而改变磁力线走向，改变双层复合永磁体转子与导体转子之间的磁感应强度。In view of the above technical problems, the present invention proposes a double-layer permanent magnet rotor magnetic coupler with a 90°Halbach arrangement, which can change the thickness of the air gap between the driving rotor and the driven rotor and change the air gap between the two permanent magnet disks. The relative rotation angle is combined in two ways to adjust the speed. One permanent magnet disk in the double-layer composite permanent magnet rotor is wrapped with an aluminum casing, separated from the other permanent magnet disk, and has a distance of 3-5mm to realize the relative rotation between the two permanent magnet disks, thereby Change the direction of the magnetic lines of force and change the magnetic induction intensity between the double-layer composite permanent magnet rotor and the conductor rotor.
一种90°Halbach排布双层永磁转子磁力耦合器，由双层复合永磁体转子和导体转子组成，双层复合永磁体转子由两个可以相对旋转的永磁体盘复合而成，两永磁体盘的排布方式皆为90°Halbach阵列，其一个周期内的磁化方向为左、上、右、下，这种排列方式可以增强耦合器工作气隙的轴向磁密，传递更大的转矩，并提高了永磁体的利用率，一个永磁体盘嵌入在铝制外壳内并通过焊接固定在第二轭铁盘上，另一个永磁体盘嵌入在外连接环的凹槽内，外连接环材料为铝，磁导率与空气相近，磁力线不会被隔断，两盘之间用铝制外壳隔开并留有3-5mm间距，以便于作相对转动，从而改变磁力线走向，改变双层复合永磁体转子与导体转子之间的磁感应强度；导体转子包括第一轭铁盘和一个导体环，导体环可以为鼠笼导体环也可以为实心导体环，导体环通过焊接紧贴在第一轭铁盘上，导体转子中的轭铁材料采用软磁铁氧体，它可以有效地增强工作气隙处的轴向磁密，提高传递转矩。由于电磁感应原理，双层复合永磁体转子可以作为主动端带动导体转子转动，反之亦可。A 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler is composed of a double-layer composite permanent magnet rotor and a conductor rotor. The double-layer composite permanent magnet rotor is composed of two relatively rotatable permanent magnet disks. The magnet disks are all arranged in a 90°Halbach array, and the magnetization directions in one cycle are left, up, right, and down. This arrangement can enhance the axial magnetic density of the working air gap of the coupler and transmit larger torque, and improve the utilization rate of permanent magnets, one permanent magnet disk is embedded in the aluminum shell and fixed on the second yoke disk by welding, and the other permanent magnet disk is embedded in the groove of the outer connecting ring, and the external connection The ring material is aluminum, the magnetic permeability is similar to that of the air, and the magnetic field lines will not be cut off. The two disks are separated by an aluminum casing and have a distance of 3-5mm to facilitate relative rotation, thereby changing the direction of the magnetic field lines and changing the double layer. The magnetic induction intensity between the composite permanent magnet rotor and the conductor rotor; the conductor rotor includes a first yoke disk and a conductor ring, the conductor ring can be a squirrel cage conductor ring or a solid conductor ring, and the conductor ring is closely attached to the first yoke by welding. On the yoke disk, the yoke material in the conductor rotor adopts soft ferrite, which can effectively enhance the axial magnetic density at the working air gap and improve the transmission torque. Due to the principle of electromagnetic induction, the double-layer composite permanent magnet rotor can be used as the active end to drive the conductor rotor to rotate, and vice versa.
它有三种调速方式，第一种是改变双层复合永磁体转子中嵌入在外连接环的凹槽内的永磁体盘与导体转子中导体环之间的气隙厚度，同时改变了工作气隙的磁感应强度，进行调速，当气隙厚度越小，工作气隙处的磁感应强度越大，所能传递的转矩越大；第二种是改变双层复合永磁体转子中两永磁体盘之间的相对转动角度同时改变了工作气隙的磁感应强度，进行调速，当两永磁体盘间没有相对转动时，此时两永磁体盘上对应位置处永磁体磁化方向相同，工作气隙处磁感应强度最大，此时所能传递的转矩最大，此时为起始情况；当嵌入在铝制外壳内的永磁体盘在起始情况的基础上相对另一个永磁体盘转过一个永磁体对应圆心角度，工作气隙处磁感应强度小于起始情况下的磁感应强度大小，此时所能传递的转矩减小；当嵌入在铝制外壳内的永磁体盘在起始情况的基础上相对另一个永磁体盘转过两个永磁体对应圆心角度时，工作气隙处磁感应强度最小，此时所能传递的转矩最小。调速时，可以将两个永磁体转子的相对位置从两永磁体盘上永磁体磁化方向相同时的起始位置转动变化到其一个永磁转子相对另一个永磁体盘转过两个永磁体对应圆心角度时的位置，这样通过两永磁体盘间的相对转动角度的变化实现调速；第三种是通过同时改变气隙厚度与相对旋转角度复合调速。It has three speed regulation modes. The first one is to change the thickness of the air gap between the permanent magnet disc embedded in the groove of the outer connecting ring in the double-layer composite permanent magnet rotor and the conductor ring in the conductor rotor, and at the same time change the working air gap. When the thickness of the air gap is smaller, the magnetic induction intensity at the working air gap is larger, and the torque that can be transmitted is larger; the second is to change the two permanent magnet disks in the double-layer composite permanent magnet rotor. The relative rotation angle between them also changes the magnetic induction intensity of the working air gap and adjusts the speed. When there is no relative rotation between the two permanent magnet discs, the magnetization directions of the permanent magnets at the corresponding positions on the two permanent magnet discs are the same, and the working air gap The magnetic induction intensity is the largest at this time, and the torque that can be transmitted is the largest at this time, which is the initial situation; when the permanent magnet disk embedded in the aluminum casing rotates a permanent magnet disk relative to the other permanent magnet disk on the basis of the initial situation. The magnet corresponds to the central angle of the circle, and the magnetic induction intensity at the working air gap is smaller than the magnetic induction intensity in the initial situation, and the torque that can be transmitted at this time is reduced; when the permanent magnet disk embedded in the aluminum shell is on the basis of the initial situation The magnetic induction intensity at the working air gap is the smallest when the two permanent magnets rotate through the corresponding central angle of the other permanent magnet disk, and the torque that can be transmitted at this time is the smallest. When adjusting the speed, the relative position of the two permanent magnet rotors can be changed from the initial position when the magnetization directions of the permanent magnets on the two permanent magnet disks are the same to that of one permanent magnet rotor rotating over the two permanent magnets relative to the other permanent magnet disk. Corresponding to the position of the center angle, the speed regulation is realized by the change of the relative rotation angle between the two permanent magnet discs; the third is the compound speed regulation by simultaneously changing the thickness of the air gap and the relative rotation angle.
可以使两永磁体盘发生相对转动的机构如下：嵌入在铝制外壳内的永磁体盘 通过焊接固定在第二轭铁盘上并通过键与主动轴相连接，嵌入在外连接环凹槽内的永磁体盘通过焊接与套筒相连接，拨块销与套筒的斜槽壁和主动轴的直槽壁接触配合，拨块安装在拨块销上，可以推动拨块销左右移动，同时改变两永磁体盘之间的相对转动位置。The mechanism that can make the two permanent magnet disks rotate relative to each other is as follows: the permanent magnet disk embedded in the aluminum shell is fixed on the second yoke iron disk by welding and connected with the driving shaft by a key, and the permanent magnet disk embedded in the groove of the outer connecting ring is fixed on the second yoke iron disk by welding. The permanent magnet disc is connected with the sleeve by welding, the pin of the dial is in contact with the wall of the inclined groove of the sleeve and the wall of the straight groove of the driving shaft. The relative rotational position between the two permanent magnet disks.
本发明的优点：(1)本发明将改变主动和从动转子之间的气隙厚度与改变两永磁体盘间的相对转动角度两种方式复合进行调速，可以更精确地对负载进行无极调速。(2)本发明的双层复合永磁体转子中的一个永磁体盘采用铝制外壳将其包裹，与另一个永磁体盘隔开，并留有3-5mm间距，可以实现两永磁体盘之间的相对转动而不会互相吸附住，保证了设备的安全性。(3)本发明中永磁体转子的永磁体排布方式为90°Halbach排布，可以增强耦合器工作气隙的轴向磁密，传递更大的转矩，并提高了永磁体的利用率。(4)本发明中导体转子的轭铁材料采用软磁铁氧体，它可以有效地增强工作气隙处的轴向磁密，提高传递转矩。Advantages of the present invention: (1) The present invention combines the two methods of changing the thickness of the air gap between the active rotor and the driven rotor and changing the relative rotation angle between the two permanent magnet disks for speed regulation, which can more accurately adjust the load steplessly. speed. (2) One permanent magnet disk in the double-layer composite permanent magnet rotor of the present invention is wrapped by an aluminum casing, separated from the other permanent magnet disk, and has a distance of 3-5mm, which can realize the connection between the two permanent magnet disks. The relative rotation between them will not stick to each other, which ensures the safety of the equipment. (3) The permanent magnet arrangement of the permanent magnet rotor in the present invention is a 90°Halbach arrangement, which can enhance the axial magnetic density of the working air gap of the coupler, transmit greater torque, and improve the utilization rate of the permanent magnets . (4) The yoke material of the conductor rotor in the present invention adopts soft ferrite, which can effectively enhance the axial magnetic density at the working air gap and improve the transmission torque.
以下结合附图及实施例对发明作进一步说明。The invention will be further described below with reference to the accompanying drawings and embodiments.
图1为实施例的一种90°Halbach排布双层永磁转子磁力耦合器工作原理及结构剖面示意图。FIG. 1 is a schematic diagram of the working principle and structural cross-section of a 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler according to an embodiment.
图2为实施例的一种90°Halbach排布双层永磁转子磁力耦合器三维结构的1/4剖面图。FIG. 2 is a 1/4 cross-sectional view of a three-dimensional structure of a 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler according to an embodiment.
图3为实施例的双层复合永磁体转子，铝制外壳与导体转子组合的剖面示意图。3 is a schematic cross-sectional view of the double-layer composite permanent magnet rotor of the embodiment, the combination of the aluminum casing and the conductor rotor.
图4为实施例的90°Halbach排布的永磁体盘俯视图。FIG. 4 is a top view of a permanent magnet disk in a 90°Halbach arrangement according to an embodiment.
图5(a)为实施例的两永磁体盘对应位置永磁体磁化方向相同时的磁力线走向图。FIG. 5( a ) is a diagram showing the direction of the magnetic force lines when the magnetization directions of the permanent magnets at the corresponding positions of the two permanent magnet disks of the embodiment are the same.
图5(b)为实施例的两永磁体盘在起始情况的基础上相对旋转一个永磁体对应圆心角度时的磁力线走向图。FIG. 5( b ) is a diagram showing the direction of magnetic force lines when two permanent magnet disks of the embodiment relatively rotate one permanent magnet corresponding to the central angle on the basis of the initial situation.
图5(c)为实施例的两永磁体盘在起始情况的基础上相对旋转两个永磁体对应圆心角度时的磁力线走向图。FIG. 5( c ) is a diagram showing the direction of the magnetic force lines when the two permanent magnet disks of the embodiment relatively rotate on the basis of the initial condition corresponding to the center angle of the circle.
图6(a)为实施例的两永磁体盘在对应位置永磁体磁化方向相同时的永磁体转子与导体转子三维结构示意图。FIG. 6( a ) is a schematic diagram of the three-dimensional structure of the permanent magnet rotor and the conductor rotor when the two permanent magnet disks of the embodiment have the same magnetization direction of the permanent magnets at the corresponding positions.
图6(b)为实施例的两永磁体盘在起始情况的基础上相对旋转一个永磁体对应 圆心角度时的永磁体转子与导体转子三维结构示意图。Figure 6(b) is a schematic diagram of the three-dimensional structure of the permanent magnet rotor and the conductor rotor when the two permanent magnet disks of the embodiment relatively rotate one permanent magnet corresponding to the central angle on the basis of the initial situation.
图6(c)为实施例的两永磁体盘在起始情况的基础上相对旋转两个永磁体对应圆心角度时的永磁体转子与导体转子三维结构示意图。FIG. 6( c ) is a schematic diagram of the three-dimensional structure of the permanent magnet rotor and the conductor rotor when the two permanent magnet disks of the embodiment relatively rotate on the basis of the initial condition corresponding to the center angle of the two permanent magnets.
图7为实施例的双层复合永磁体转子、铝制外壳与导体转子组合的三维***图。FIG. 7 is a three-dimensional exploded view of the combination of the double-layer composite permanent magnet rotor, the aluminum casing and the conductor rotor according to the embodiment.
图8为实施例的双层复合永磁体转子、铝制外壳与导体转子组合的三维装配图。FIG. 8 is a three-dimensional assembly drawing of the combination of the double-layer composite permanent magnet rotor, the aluminum casing and the conductor rotor of the embodiment.
图9(a)为实施例的实心盘式导体转子三维装配图。FIG. 9( a ) is a three-dimensional assembly drawing of the solid disc conductor rotor of the embodiment.
图9(b)为实施例的鼠笼盘式导体转子三维装配图。Fig. 9(b) is a three-dimensional assembly drawing of the squirrel-cage disc conductor rotor of the embodiment.
图10为实施例的外连接环三维结构图。FIG. 10 is a three-dimensional structural diagram of the outer connecting ring of the embodiment.
图11为实施例的转动轴三维结构图。FIG. 11 is a three-dimensional structural diagram of the rotating shaft of the embodiment.
图12为实施例的套筒三维结构图。FIG. 12 is a three-dimensional structural diagram of the sleeve of the embodiment.
1-导体环 2-第一轭铁盘 3-从动轴 4-键 5-铝制外壳 6-外连接环 7-套筒 8-键 9-主动轴 10-拨块 11-拨块销 12-第二轭铁盘 13-第一永磁体盘 14-第二永磁体盘1-Conductor ring 2-First yoke iron plate 3-Driver shaft 4-Key 5-Aluminum shell 6-Outer connecting ring 7-Sleeve 8-Key 9-Drive shaft 10-Dial block 11-Dial block pin 12 -Second yoke disk 13-First permanent magnet disk 14-Second permanent magnet disk
如图1、图2所示，转动端I包括双层复合永磁体转子、铝制外壳5、外连接环6、第二轭铁盘12、套筒7、主动轴9、拨块10、拨块销11，如图3、图4所示，双层复合永磁体转子由两个采用90°Halbach排布并可以相对旋转的永磁体盘复合而成，第一永磁体盘13其一个周期内的磁化方向按照左、上、右、下的方向磁化，第一永磁体盘13嵌入在铝制外壳5内，第二永磁体盘14嵌入在外连接环6的凹槽内，两盘之间用铝制外壳5隔开并留有3-5mm间距，以便于作相对转动，从而改变磁力线走向，改变永磁体转子中嵌入在外连接环的凹槽内的永磁体盘与导体转子中导体环之间的磁感应强度，铝制外壳5与第二轭铁盘12通过焊接将第一永磁体盘13固定在第二轭铁盘12背面，第二轭铁盘12再通过键8和主动轴9相连接，第二永磁体盘14嵌入在外连接环6的凹槽内，外连接环6与套筒7通过焊接连接在一起，套筒7的斜槽壁和主动轴9的直槽壁与拨块销11接触配合，拨块10安装在拨块销11上，通过推动拨块销11左右移动，同时改变两永磁体盘之间的相对转动位置。As shown in Figures 1 and 2, the rotating end 1 includes a double-layer composite permanent magnet rotor, an aluminum casing 5, an outer connecting ring 6, a second yoke disk 12, a sleeve 7, a driving shaft 9, a dial block 10, a dial The block pin 11, as shown in Figure 3 and Figure 4, the double-layer composite permanent magnet rotor is composed of two permanent magnet disks that are arranged at 90°Halbach and can rotate relative to each other. The first permanent magnet disk 13 is in one cycle The magnetization direction of the magnet is magnetized according to the directions of left, top, right and bottom. The first permanent magnet disk 13 is embedded in the aluminum casing 5, and the second permanent magnet disk 14 is embedded in the groove of the outer connecting ring 6. The aluminum casing 5 is separated and has a distance of 3-5mm, so as to facilitate relative rotation, thereby changing the direction of the magnetic field lines, changing the permanent magnet rotor embedded in the groove of the outer connecting ring between the permanent magnet disc and the conductor ring in the conductor rotor The first permanent magnet disk 13 is fixed on the back of the second yoke disk 12 by welding the aluminum shell 5 and the second yoke disk 12, and the second yoke disk 12 is connected with the driving shaft 9 through the key 8 , the second permanent magnet disc 14 is embedded in the groove of the outer connecting ring 6, the outer connecting ring 6 and the sleeve 7 are connected together by welding, the inclined groove wall of the sleeve 7 and the straight groove wall of the driving shaft 9 are connected with the block pin 11 is in contact with each other, the dial block 10 is installed on the dial block pin 11, and by pushing the dial block pin 11 to move left and right, the relative rotational position between the two permanent magnet disks is changed at the same time.
转动端II包括导体转子和从动轴3，导体转子由一个第一轭铁盘2和一个导体环1组成，导体环1可以为鼠笼导体环也可以为实心导体环，导体环1通过焊接紧贴在第一轭铁盘2上，轭铁盘2与从动轴3通过键4相连，轭铁材料采用软 磁铁氧体，它可以有效地增强工作气隙处的磁感应强度，提高传递转矩。The rotating end II includes a conductor rotor and a driven shaft 3. The conductor rotor consists of a first yoke disk 2 and a conductor ring 1. The conductor ring 1 can be a squirrel cage conductor ring or a solid conductor ring. The conductor ring 1 is welded by welding. It is closely attached to the first yoke plate 2, the yoke plate 2 is connected with the driven shaft 3 through the key 4, and the yoke material is made of soft ferrite, which can effectively enhance the magnetic induction intensity at the working air gap and improve the transmission rotation. moment.
如图5所示，为双层复合永磁体转子与导体转子在不同情况下的三维结构示意图。如图5(a)所示，为初始情况下的双层复合永磁体转子与导体转子三维结构示意图，此时两永磁体盘在对应位置永磁体磁化方向相同。如图5(b)所示，为嵌入在铝制外壳内的第一永磁体盘13在起始情况的基础上相对第二永磁体盘14转过一个永磁体对应圆心角度时的三维结构示意图，如图5(c)所示，为嵌入在铝制外壳内的第一永磁体盘13在起始情况的基础上相对第二永磁体盘14转过两个永磁体对应圆心角度时的三维结构示意图。As shown in FIG. 5 , it is a schematic diagram of the three-dimensional structure of the double-layer composite permanent magnet rotor and the conductor rotor under different conditions. As shown in Figure 5(a), it is a schematic diagram of the three-dimensional structure of the double-layer composite permanent magnet rotor and the conductor rotor in the initial situation. At this time, the two permanent magnet disks have the same permanent magnet magnetization direction at the corresponding position. As shown in FIG. 5( b ), it is a three-dimensional structural schematic diagram of the first permanent magnet disk 13 embedded in the aluminum casing, when the first permanent magnet disk 13 is rotated relative to the second permanent magnet disk 14 by a corresponding central angle of the permanent magnet on the basis of the initial situation , as shown in FIG. 5( c ), it is the three-dimensional image of the first permanent magnet disk 13 embedded in the aluminum casing when the first permanent magnet disk 13 is rotated relative to the second permanent magnet disk 14 through the corresponding central angle of the two permanent magnets. Schematic.
本发明它有三种调速方式，第一种是改变双层复合永磁体转子中嵌入在外连接环的凹槽内的第二永磁体盘14与导体转子中导体环之间的气隙厚度，同时改变了工作气隙的磁感应强度，进行调速，当气隙厚度越小，工作气隙处的磁感应强度越大，所能传递的转矩越大；第二种是改变双层复合永磁体转子中两永磁体盘之间的相对转动角度同时改变了工作气隙的磁感应强度，进行调速，如图6(a)所示，当两永磁体盘间没有相对转动时，此时两永磁体盘上对应位置处永磁体磁化方向相同，工作气隙处磁感应强度最大，此时所能传递的转矩最大，此时为起始情况；如图6(b)所示，当嵌入在铝制外壳内的第一永磁体盘13在起始情况的基础上相对第二永磁体盘14转过一个永磁体对应圆心角度，工作气隙处磁感应强度小于起始情况下的磁感应强度大小，此时所能传递的转矩减小；如图6(c)所示，当嵌入在铝制外壳内的第一永磁体盘13在起始情况的基础上相对第二永磁体盘14转过两个永磁体对应圆心角度时，工作气隙处磁感应强度最小，此时所能传递的转矩最小。调速时，可以将两个永磁体转子的相对位置从两永磁体盘上永磁体磁化方向相同时的起始位置转动变化到其一个永磁转子相对另一个永磁体盘转过两个永磁体对应圆心角度时的位置，这样通过两永磁体盘间的相对转动角度的变化实现调速；第三种是通过同时改变气隙厚度与相对旋转角度复合调速。如图7、图8所示，第一永磁体盘13嵌入在铝制外壳5内，第二永磁体盘14与第一永磁体盘13之间用铝制外壳5隔开并留有3-5mm间距，以便于作相对转动，从而改变磁力线走向，改变第二永磁体盘14与导体转子中导体环1之间的磁感应强度。The present invention has three speed regulation modes. The first one is to change the thickness of the air gap between the second permanent magnet disc 14 embedded in the groove of the outer connecting ring in the double-layer composite permanent magnet rotor and the conductor ring in the conductor rotor. The magnetic induction intensity of the working air gap is changed, and the speed is adjusted. When the thickness of the air gap is smaller, the magnetic induction intensity at the working air gap is larger, and the torque that can be transmitted is larger; the second is to change the double-layer composite permanent magnet rotor. The relative rotation angle between the two permanent magnet discs in the middle changes the magnetic induction intensity of the working air gap at the same time, and the speed is adjusted. As shown in Figure 6(a), when there is no relative rotation between the two permanent magnet discs, the two permanent magnets The magnetization directions of the permanent magnets at the corresponding positions on the disk are the same, the magnetic induction intensity is the largest at the working air gap, and the torque that can be transmitted is the largest at this time. The first permanent magnet disk 13 in the casing is rotated relative to the second permanent magnet disk 14 by a corresponding central angle of the permanent magnet on the basis of the initial situation, and the magnetic induction intensity at the working air gap is smaller than the magnetic induction intensity in the initial situation. The torque that can be transmitted is reduced; as shown in Figure 6(c), when the first permanent magnet disk 13 embedded in the aluminum casing rotates two times relative to the second permanent magnet disk 14 on the basis of the initial situation When the permanent magnet corresponds to the center angle, the magnetic induction intensity at the working air gap is the smallest, and the torque that can be transmitted at this time is the smallest. When adjusting the speed, the relative position of the two permanent magnet rotors can be changed from the initial position when the magnetization directions of the permanent magnets on the two permanent magnet discs are the same to that of one permanent magnet rotor rotating over the two permanent magnets relative to the other permanent magnet disc. Corresponding to the position of the center angle, the speed regulation is realized by the change of the relative rotation angle between the two permanent magnet discs; the third is the compound speed regulation by simultaneously changing the thickness of the air gap and the relative rotation angle. As shown in FIGS. 7 and 8 , the first permanent magnet disk 13 is embedded in the aluminum casing 5, and the second permanent magnet disk 14 and the first permanent magnet disk 13 are separated by the aluminum casing 5 with 3- 5mm spacing to facilitate relative rotation, thereby changing the direction of the magnetic field lines and changing the magnetic induction intensity between the second permanent magnet disk 14 and the conductor ring 1 in the conductor rotor.
如图9所示，导体转子由一个第一轭铁盘2和一个导体环1组成，导体环1 可以为鼠笼导体环也可以为实心导体环，导体环1通过焊接紧贴在第一轭铁盘2上，第一轭铁盘2与从动轴3通过键4相连，轭铁材料采用软磁铁氧体，它可以有效地增强工作气隙处的磁感应强度，提高传递转矩。As shown in Figure 9, the conductor rotor consists of a first yoke disk 2 and a conductor ring 1. The conductor ring 1 can be a squirrel cage conductor ring or a solid conductor ring. The conductor ring 1 is closely attached to the first yoke by welding. On the iron plate 2, the first yoke iron plate 2 is connected with the driven shaft 3 through the key 4, and the yoke iron material adopts soft ferrite, which can effectively enhance the magnetic induction intensity at the working air gap and improve the transmission torque.
如图10所示，为外连接环6三维结构图，永磁体盘14外连接环内有凹槽，用于固定第二永磁体盘14，外连接环通过焊接与套筒7相连接，外连接环6材料为铝，，磁导率与空气相近，磁力线不会被隔断，所以不会影响双层复合永磁体转子与导体转子之间磁场的传递。As shown in FIG. 10 , which is a three-dimensional structural diagram of the outer connecting ring 6 , there are grooves in the outer connecting ring of the permanent magnet disk 14 for fixing the second permanent magnet disk 14 , the outer connecting ring is connected with the sleeve 7 by welding, and the outer connecting ring is The material of the connecting ring 6 is aluminum, the magnetic permeability is similar to that of air, and the magnetic field lines will not be cut off, so it will not affect the transmission of the magnetic field between the double-layer composite permanent magnet rotor and the conductor rotor.
如图11、图12所示，为主动轴9、套筒7的三维结构图，嵌入在铝制外壳内的第一永磁体盘13通过焊接固定在第二轭铁盘12上并通过键8与主动轴9相连接，嵌入在外连接环凹槽内的第二永磁体盘14通过焊接与套筒7相连接，拨块销11与套筒7的斜槽壁和主动轴9的直槽壁接触配合，拨块10安装在拨块销11上，可以推动拨块销11左右移动，同时改变两永磁体盘之间的相对转动位置。As shown in FIG. 11 and FIG. 12 , which are three-dimensional structural diagrams of the driving shaft 9 and the sleeve 7 , the first permanent magnet disc 13 embedded in the aluminum casing is fixed on the second yoke disc 12 by welding, and the key 8 Connected with the driving shaft 9, the second permanent magnet disc 14 embedded in the groove of the outer connecting ring is connected with the sleeve 7 by welding, the dial pin 11 is connected to the inclined groove wall of the sleeve 7 and the straight groove wall of the driving shaft 9 In the contact fit, the toggle block 10 is installed on the toggle block pin 11, which can push the toggle block pin 11 to move left and right, while changing the relative rotational position between the two permanent magnet disks.
Claims (4)
- 一种90°Halbach排布双层永磁转子磁力耦合器，其特征在于，所述磁力耦合器由双层复合永磁体转子和导体转子组成，双层复合永磁体转子由两个可以相对旋转的永磁体盘复合而成，两永磁体盘的排布方式皆为90°Halbach阵列，其一个周期内的磁化方向为左、上、右、下，这种排列方式可以增强耦合器工作气隙的轴向磁密，传递更大的转矩，并提高了永磁体的利用率，一个永磁体盘嵌入在铝制外壳内并通过焊接固定在第二轭铁盘上，另一个永磁体盘嵌入在外连接环的凹槽内，外连接环材料为铝，磁导率与空气相近，磁力线不会被隔断，两盘之间用铝制外壳隔开并留有3-5mm间距，以便于作相对转动，从而改变磁力线走向，改变双层复合永磁体转子与导体转子之间的磁感应强度；导体转子包括第一轭铁盘和一个导体环，导体环通过焊接紧贴在第一轭铁盘上；由于电磁感应原理，双层复合永磁体转子作为主动端带动导体转子转动。A 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler, characterized in that the magnetic coupler is composed of a double-layer composite permanent magnet rotor and a conductor rotor, and the double-layer composite permanent magnet rotor is composed of two relatively rotatable rotors. The permanent magnet disks are composited, and the two permanent magnet disks are arranged in a 90°Halbach array. The magnetization directions in one cycle are left, up, right, and down. This arrangement can enhance the working air gap of the coupler. Axial magnetic density, transmits greater torque, and improves the utilization of permanent magnets, one permanent magnet disk is embedded in the aluminum shell and fixed on the second yoke disk by welding, and the other permanent magnet disk is embedded outside In the groove of the connecting ring, the material of the outer connecting ring is aluminum, the magnetic permeability is similar to that of air, and the magnetic force line will not be cut off. , thereby changing the direction of the magnetic field lines and changing the magnetic induction intensity between the double-layer composite permanent magnet rotor and the conductor rotor; the conductor rotor includes a first yoke disk and a conductor ring, and the conductor ring is closely attached to the first yoke disk by welding; According to the principle of electromagnetic induction, the double-layer composite permanent magnet rotor acts as the active end to drive the conductor rotor to rotate.
- 如权利要求1所述的一种90°Halbach排布双层永磁转子磁力耦合器，其特征在于，导体环为鼠笼导体环或实心导体环，导体转子中的轭铁材料采用软磁铁氧体，它可以有效地增强工作气隙处的轴向磁密，提高传递转矩。A 90°Halbach arrangement double-layer permanent magnet rotor magnetic coupler as claimed in claim 1, wherein the conductor ring is a squirrel cage conductor ring or a solid conductor ring, and the yoke material in the conductor rotor is made of soft ferrite It can effectively enhance the axial magnetic density at the working air gap and improve the transmission torque.
- 如权利要求1所述的一种90°Halbach排布双层永磁转子磁力耦合器，其特征在于，所述磁力耦合器有三种调速方式，第一种是改变双层复合永磁体转子中嵌入在外连接环的凹槽内的永磁体盘与导体转子中导体环之间的气隙厚度，同时改变了工作气隙的磁感应强度，进行调速，当气隙厚度越小，工作气隙处的磁感应强度越大，所能传递的转矩越大；第二种是改变双层复合永磁体转子中两永磁体盘之间的相对转动角度同时改变了工作气隙的磁感应强度，进行调速，当两永磁体盘间没有相对转动时，此时两永磁体盘上对应位置处永磁体磁化方向相同，工作气隙处磁感应强度最大，此时所能传递的转矩最大，此时为起始情况；当嵌入在铝制外壳内的永磁体盘在起始情况的基础上相对另一个永磁体盘转过一个永磁体对应圆心角度，工作气隙处磁感应强度小于起始情况下的磁感应强度大小，此时所能传递的转矩减小；当嵌入在铝制外壳内的永磁体盘在起始情况的基础上相对另一个永磁体盘转过两个永磁体对应圆心角度时，工作气隙处磁感应强度最小，此时所能传递的转矩最小；调速时，可以将两个永磁体转子的相对位置从两永磁体盘上永磁体磁化方向相同时的起始位置转动变化到其一个永磁转子相对另一个永磁体盘转过两个永磁体对应圆心角度时的位置，这样通过两永磁体盘间 的相对转动角度的变化实现调速；第三种是通过同时改变气隙厚度与相对旋转角度复合调速。A 90°Halbach arrangement double-layer permanent magnet rotor magnetic coupler as claimed in claim 1, characterized in that, the magnetic coupler has three speed regulation modes, the first one is to change the double-layer composite permanent magnet rotor in the The thickness of the air gap between the permanent magnet disc embedded in the groove of the outer connecting ring and the conductor ring in the conductor rotor changes the magnetic induction intensity of the working air gap and adjusts the speed. The greater the magnetic induction intensity, the greater the torque that can be transmitted; the second is to change the relative rotation angle between the two permanent magnet disks in the double-layer composite permanent magnet rotor, and at the same time change the magnetic induction intensity of the working air gap to adjust the speed. , When there is no relative rotation between the two permanent magnet disks, the magnetization direction of the permanent magnets at the corresponding positions on the two permanent magnet disks is the same, the magnetic induction intensity is the largest at the working air gap, and the torque that can be transmitted is the largest at this time. The initial situation; when the permanent magnet disk embedded in the aluminum casing rotates a permanent magnet corresponding to the center angle relative to the other permanent magnet disk on the basis of the initial situation, the magnetic induction intensity at the working air gap is smaller than the magnetic induction intensity in the initial situation At this time, the torque that can be transmitted is reduced; when the permanent magnet disk embedded in the aluminum shell rotates relative to the other permanent magnet disk through the corresponding center angle of the two permanent magnets on the basis of the initial situation, the working gas The magnetic induction intensity at the gap is the smallest, and the torque that can be transmitted is the smallest at this time; when the speed is adjusted, the relative position of the two permanent magnet rotors can be changed from the initial position when the magnetization directions of the permanent magnets on the two permanent magnet disks are the same to the rotation change. One permanent magnet rotor rotates relative to the other permanent magnet disk through the position corresponding to the center angle of the two permanent magnets, so that the speed regulation is realized by the change of the relative rotation angle between the two permanent magnet disks; the third is to change the thickness of the air gap at the same time. Combined speed regulation with relative rotation angle.
- 如权利要求1所述的一种90°Halbach排布双层永磁转子磁力耦合器，其特征在于，嵌入在铝制外壳内的永磁体盘通过焊接固定在第二轭铁盘上并通过键与主动轴相连接，嵌入在外连接环凹槽内的永磁体盘通过焊接与套筒相连接，拨块销与套筒的斜槽壁和主动轴的直槽壁接触配合，拨块安装在拨块销上，可以推动拨块销左右移动，同时改变两永磁体盘之间的相对转动位置。A 90°Halbach-arranged double-layer permanent magnet rotor magnetic coupler as claimed in claim 1, characterized in that the permanent magnet disk embedded in the aluminum casing is fixed on the second yoke disk by welding and is fixed on the second yoke disk by a key Connected with the driving shaft, the permanent magnet disc embedded in the groove of the outer connecting ring is connected with the sleeve by welding, the pin of the dial is in contact with the inclined groove wall of the sleeve and the straight groove wall of the driving shaft, and the dial is installed on the dial. On the block pin, the dial block pin can be pushed to move left and right, and the relative rotational position between the two permanent magnet disks can be changed at the same time.
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| XU YANLIANG, YAO FUAN, FANG JIANCHENG: "Halbach Array Permanent Magnet Machine and Its Performance Comparison with the Normal Array One(II) —— Comparison of Different Magnet Array Ironless Machine and Prototype Experiment", TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY, vol. 19, no. 6, 30 June 2004 (2004-06-30), pages 58 - 62, XP055913956, ISSN: 1000-6753, DOI: 10.19595/j.cnki.1000-6753.tces.2004.06.010 * |
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| Publication number | Publication date |
|---|---|
| CN112311197A (en) | 2021-02-02 |
| CN112311197B (en) | 2021-12-21 |
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