Magnetic field adjusting ring

Abstract

The invention discloses a magnetic field adjusting ring which comprises a bearing framework, a plurality of magnetic conduction pieces and a plurality of driving pieces, the multiple magnetic conduction pieces are sequentially arranged in the circumferential direction of the bearing framework, and each magnetic conduction piece can move relative to the bearing framework in the circumferential direction of the bearing framework. At least one magnetic conducting part and the other magnetic conducting parts are arranged at intervals in the circumferential direction of the bearing framework, in a projection plane orthogonal to the length direction of the bearing framework, the sum of the sizes of the multiple magnetic conducting parts in the circumferential direction of the bearing framework is smaller than the perimeter of the bearing framework, and the multiple driving parts are arranged on the bearing framework at intervals in the circumferential direction of the bearing framework; the driving part can move relative to the bearing framework so as to drive the magnetic conduction part to move in the circumferential direction of the bearing framework. The adjustable magnetic ring has the advantages of being simple in structure, capable of achieving series change, wide in application range and the like.

Description

Technical Field

[0001] The invention relates to a permanent magnet gear, in particular to a magnetic adjustment ring. Background Art

[0002] In the magnetic field modulation type permanent magnet speed changer, there are three main components: inner magnetic ring, outer magnetic ring, and magnetic adjustment ring. In order to obtain the maximum transmission ratio, the topological structure adopts the outer magnetic ring to be fixed, the inner magnetic ring is used as the high-speed mover, and the magnetic adjustment ring is used as the low-speed mover. The two movers move in the same direction. The magnetic adjustment ring is the main component for the output of large torque. The parts of the mechanism of this topological structure are completely concentric on any cross section, which belongs to the concentric structure. The number of pole pairs of the permanent magnet on the outer ring surface of the inner magnetic ring is P1, and the number of pole pairs of the permanent magnet on the inner ring surface of the outer magnetic ring is P2. The main function of the magnetic adjustment ring is to complete the modulation of the magnetic field in the inner and outer air gaps. During the rotation process, the permanent magnet on the inner magnetic ring forms a harmonic with a main harmonic order of P1 in the inner air gap. After modulation by the magnetic adjustment ring, a harmonic with a main harmonic order (P2) that is exactly consistent with the number of pole pairs of the permanent magnet on the inner ring surface of the outer magnetic ring is formed in the outer air gap, thereby realizing equal magnetic pole coupling. Therefore, the number of magnetic pole pieces of the magnetic tuning ring must be equal to the sum of the pole pairs of the permanent magnets on the inner and outer magnetic rings, that is, P = P1 + P2, so as to ensure the stable output of the permanent magnet speed changer.

[0003] In the related art, the magnetic adjustment rings are fixedly arranged and the number of the magnetic adjustment rings is not adjustable. Summary of the invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] Transmissions with constant speed ratios are only used under special working conditions, and the most common working conditions in industry require real-time adjustment of the equipment speed, which requires the speed changer to be able to adjust the equipment speed ratio in a timely manner according to the working conditions. In the related art, after the permanent magnet speed changer is designed and manufactured, the number of pole pairs of the inner and outer magnetic ring permanent magnets is fixed, and the number of poles of the magnetic modulation ring is also constant, which determines that the speed ratio of this type of permanent magnet speed changer is constant. Therefore, in the related art, the constant speed ratio characteristics of the magnetic field modulation permanent magnet speed changer greatly limit its widespread promotion in the industrial field.

[0006] In order to expand the scope of application of the industrial application of permanent magnet gear transmission, it is necessary to develop a permanent magnet speed changer with adjustable speed ratio. The speed ratio of a mechanical gearbox is the ratio of the number of input teeth to the number of output teeth. The speed ratio of a permanent magnet speed changer is determined in a similar way, which is the ratio of the number of poles at the output end to the number of poles at the inner magnetic ring. In order to obtain a larger speed ratio, a magnetic field modulation permanent magnet speed changer usually selects a magnetic adjustment ring with more poles as the output end. During operation, the magnetic adjustment ring needs to withstand large torque, centrifugal force, magnetic field repulsion, impact, vibration and high temperature at the same time. Due to the double air gap characteristics of the magnetic field modulation topology, the axial and radial deformation of the magnetic adjustment ring during operation of the permanent magnet speed changer shall not exceed 0.5mm to avoid scratching the magnetic adjustment ring with the other two parts. Therefore, the magnetic adjustment ring has very high requirements for mechanical properties such as strength, stiffness, and toughness at high temperatures. At the same time, the efficiency control of the speed changer requires that the load-bearing skeleton material has the characteristics of low eddy current loss. The load-bearing skeleton material is the key material that limits the power increase of the permanent magnet speed changer.

[0007] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0008] To this end, an embodiment of the present invention provides a magnetic tuning ring with adjustable levels and high transmission efficiency.

[0009] The magnetic tuning ring according to the embodiment of the present invention comprises: a load-bearing frame; a plurality of magnetic conductive parts, the plurality of magnetic conductive parts are arranged in sequence along the circumference of the load-bearing frame and each of the magnetic conductive parts is movable relative to the load-bearing frame along the circumference of the load-bearing frame, at least one of the magnetic conductive parts is spaced apart from the other magnetic conductive parts in the circumferential direction of the load-bearing frame, and in a projection plane orthogonal to the length direction of the load-bearing frame, the sum of the dimensions of the plurality of magnetic conductive parts in the circumferential direction of the load-bearing frame is less than the circumference of the load-bearing frame; and a plurality of driving parts, the plurality of driving parts are spaced apart along the circumference of the load-bearing frame. The partition is arranged on the supporting frame, and the driving member is movable relative to the supporting frame to drive the magnetic conductive member to move along the circumferential direction of the supporting frame. The magnetic tuning ring has a first state and a second state. In the first state, the driving member is passed through a plurality of the magnetic conductive members to drive the magnetic conductive members to separate so as to increase the number of magnetic poles of the magnetic tuning ring. In the second state, the driving member is passed through a plurality of the magnetic conductive members to drive the magnetic conductive members to approach each other, and at least two of the magnetic conductive members are in contact under the action of the driving member so as to reduce the number of magnetic poles of the magnetic tuning ring.

[0010] The magnetic tuning ring of the embodiment of the present invention is provided with a bearing frame, a plurality of magnetic conductive parts and a plurality of driving parts, and the number of poles of the magnetic tuning block can be adjusted by the cooperation of the driving parts and the magnetic conductive parts, thereby improving the wide promotion of the magnetic tuning ring in the industrial field.

[0011] In some embodiments, the supporting skeleton includes a first annular frame, a second annular frame and a plurality of supporting members, the first annular frame and the second annular frame are arranged relative to each other at intervals, the two ends of the plurality of supporting members are respectively connected to the first annular frame and the second annular frame, and the plurality of supporting members are arranged at intervals along the circumference of the first annular frame, at least two of the magnetic conductive members are arranged between two adjacent supporting members, the magnetic conductive member located between two adjacent supporting members is movable relative to the supporting skeleton along the circumference of the supporting skeleton, an installation cavity is defined between two adjacent driving members, at least one of the magnetic conductive members is arranged in the installation cavity, and the number of magnetic conductive members between two adjacent installation cavities is equal.

[0012] In some embodiments, the multiple driving members include multiple first driving members and multiple second driving members. The multiple first driving members are inserted into the first annular frame of the supporting skeleton and are arranged at circumferential intervals around the supporting skeleton. The multiple first driving members are movable relative to the supporting skeleton along the length direction of the supporting skeleton. The multiple second driving members are inserted into the second annular frame of the supporting skeleton and are arranged at circumferential intervals around the supporting skeleton. The multiple second driving members are arranged so as to be movable relative to the supporting skeleton along the length direction of the supporting skeleton.

[0013] In some embodiments, the plurality of magnetic conductive parts include a plurality of first magnetic conductive parts and a plurality of second magnetic conductive parts, and the plurality of the first magnetic conductive parts and the plurality of the second magnetic conductive parts are alternately arranged on the supporting frame one by one, and the first magnetic conductive parts and the second magnetic conductive parts are arranged between two adjacent support members. In the first state, the second driving member is passed through the first magnetic conductive part and the second magnetic conductive part, so that the second driving member drives the first magnetic conductive part and the second magnetic conductive part to separate to increase the number of poles of the magnetic tuning ring. In the second state, the first driving member is passed through the first magnetic conductive part and the supporting frame, so that the first driving member drives the first magnetic conductive part and the second magnetic conductive part to contact each other to reduce the number of poles of the magnetic tuning ring.

[0014] In some embodiments, in a projection plane orthogonal to the length direction of the load-bearing frame, a plurality of the first driving members and a plurality of the second driving members are alternately arranged one by one.

[0015] In some embodiments, the magnetic tuning ring also includes: a first connecting member and a second connecting member, the first connecting member and the second connecting member are respectively arranged at two ends of the supporting frame; a first mounting member, the first mounting member is mounted on the first connecting member and is located at one end of the supporting frame, the first mounting member is movable relative to the first connecting member along the length direction of the supporting frame, and a plurality of first driving members are arranged on a side of the first mounting member facing the supporting frame; a second mounting member, the second mounting member is mounted on the second connecting member and is located at the other end of the supporting frame, the second mounting member is movable relative to the second connecting member along the length direction of the supporting frame, and a plurality of second driving members are arranged on a side of the second mounting member facing the supporting frame.

[0016] In some embodiments, in a projection plane orthogonal to the length direction of the supporting frame, the first annular frame and the second annular frame are both circular rings, the magnetic conductive part and the outer circumferential surface of the magnetic conductive part are both arc-shaped, and the projection of the magnetic conductive part in the projection plane is located in the first annular frame.

[0017] In some embodiments, multiple magnetic conductive parts and multiple driving parts are alternately arranged one by one in the circumferential direction of the load-bearing skeleton, or multiple magnetic conductive parts are spaced apart in the circumferential direction of the load-bearing skeleton to form multiple rows, each row includes a plurality of magnetic conductive parts that are sequentially arranged in a close fit along the circumference of the load-bearing skeleton, and multiple rows of magnetic conductive parts and multiple driving parts are alternately arranged one by one in the circumferential direction of the load-bearing skeleton.

[0018] In some embodiments, a first matching portion is provided on the magnetic conductive component, and a second matching portion matching with the first matching portion is provided on the supporting frame, the second matching portion extends along the circumference of the supporting frame, one of the first matching portion and the second matching portion is a slide groove, and the other of the first matching portion and the second matching portion is a slide rail, and the slide rail is passed through the slide groove so that the magnetic conductive component can be movably installed on the supporting frame.

[0019] In some embodiments, the load-bearing frame and the driving member are both made of epoxy resin material, and the magnetic conductive member is a magnetic conductive block prepared by lamination through a bonding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a magnetic tuning ring according to an embodiment of the present invention.

[0021] Figure 2 4 is a side view of a magnetic tuning ring according to an embodiment of the present invention.

[0022] Figure 3 It is a schematic structural diagram of a bearing frame of a magnetic tuning ring according to an embodiment of the present invention.

[0023] Figure 4 It is a left view of the second annular frame of the magnetic tuning ring according to an embodiment of the present invention.

[0024] Figure 5 It is a schematic structural diagram of a first driving member and a first mounting member of a magnetic tuning ring according to an embodiment of the present invention.

[0025] Figure 6 It is a schematic structural diagram of a magnetic conductive member of a magnetic tuning ring according to an embodiment of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the first connecting member of the magnetic tuning ring according to an embodiment of the present invention.

[0027] Magnetic adjustment ring 100;

[0028] Load-bearing frame 1; first annular frame 11; second annular frame 12; support member 13; second matching portion 14;

[0029] Magnetic conductive member 2; first magnetic conductive member 21; second magnetic conductive member 22; first matching portion 23;

[0030] Driving member 3; first driving member 31; second driving member 32;

[0031] First connecting member 4; first connecting plate 41; first sleeve 42;

[0032] A second connecting member 5;

[0033] First mounting member 6; first outer ring plate 61; first inner ring plate 62; first rod 63;

[0034] Second mounting member 7. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] The magnetic tuning ring according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0037] like Figure 1-7 As shown, the magnetic tuning ring according to an embodiment of the present invention includes a bearing frame 1, a plurality of magnetic conductive parts 2 and a plurality of driving parts 3.

[0038] Multiple magnetic conductive members 2 are arranged in sequence along the circumference of the load-bearing frame 1, and each magnetic conductive member 2 is movable relative to the load-bearing frame 1 along the circumference of the load-bearing frame 1. At least one magnetic conductive member 2 is spaced apart from the other magnetic conductive members 2 in the circumferential direction of the load-bearing frame 1, and is arranged in a direction orthogonal to the length direction of the load-bearing frame 1 (such as Figure 1In the projection plane (left-right direction as shown), the sum of the sizes of the multiple magnetic conductive parts 2 in the circumferential direction of the load-bearing skeleton 1 is smaller than the circumference of the load-bearing skeleton 1. Specifically, the load-bearing skeleton 1 is a cylindrical frame extending in the left-right direction, and the multiple magnetic conductive parts 2 are arranged on the load-bearing skeleton 1 at intervals along the circumference of the load-bearing skeleton 1, and each magnetic conductive part 2 can slide along the circumference of the load-bearing skeleton 1, and the sum of the circumferential sizes of the multiple magnetic conductive parts 2 in the load-bearing skeleton 1 is smaller than the circumference of the load-bearing skeleton 1 (in other words, the multiple magnetic conductive parts 2 are not distributed throughout the entire load-bearing skeleton 1), thereby allowing the magnetic conductive parts 2 to slide in the circumferential direction of the load-bearing skeleton 1.

[0039] A plurality of driving members 3 are arranged on the supporting skeleton 1 at intervals along the circumference of the supporting skeleton 1. The driving members 3 are movable relative to the supporting skeleton 1 to drive the magnetic conductive members 2 to move along the circumference of the supporting skeleton 1. The magnetic tuning ring 100 has a first state and a second state. In the first state, the driving members 3 are passed through the plurality of magnetic conductive members 2 to drive the magnetic conductive members 2 to separate so as to increase the number of magnetic poles of the magnetic tuning ring 100. In the second state, the driving members 3 are passed through the plurality of magnetic conductive members 2 to drive the magnetic conductive members 2 to approach so as to make at least two magnetic conductive members 2 contact so as to reduce the number of magnetic poles of the magnetic tuning ring 100. Specifically, the driving member 3 can be inserted into the supporting frame 1 according to actual conditions. For example, the driving member 3 is inserted into the outer peripheral surface of the supporting frame 1 and can move in the inner and outer directions, or the driving member 3 is inserted into the end surface of the supporting frame 1 and can move in the left and right directions. The driving member 3 is inserted into the supporting frame 1 and inserted between the multiple magnetic conductive members 2, thereby driving the magnetic conductive members 2 to move along the circumferential direction of the supporting frame 1. When the number of magnetic poles of the magnetic adjustment ring 100 needs to be increased, the magnetic adjustment ring 100 is in the first state, and the driving member 3 can be inserted into the multiple magnetic conductive members 2, so that the multiple magnetic conductive members 2 are separated from each other through the driving member 3 to form an independent whole. The plurality of magnetic conductive members 2 are connected to each other through the driving member 3 so that the plurality of magnetic conductive members 2 are in contact with each other, thereby forming a whole with the plurality of magnetic conductive members 2, thereby reducing the number of magnetic poles of the magnetic tuning ring 100. In other words, one magnetic conductive member 2 may be arranged between two adjacent driving members 3, or two magnetic conductive members 2 may be arranged between two adjacent driving members 3, or a plurality of magnetic conductive members may be arranged between two adjacent driving members 3.

[0040] The magnetic adjustment ring 100 of the embodiment of the present invention is provided with a bearing frame 1, a plurality of magnetic conductive parts 2 and a plurality of driving parts 3. The magnetic conductive parts 2 can be driven to separate or contact by the driving parts 3. The magnetic adjustment ring 100 can realize the change of the number of magnetic conductive poles, which greatly promotes the limitation of the permanent magnet speed changer that the transmission ratio cannot be adjusted in the related technology, and lays a technical foundation for the advent of the variable transmission ratio permanent magnet speed changer.

[0041] In some embodiments, the supporting skeleton 1 includes a first annular frame 11, a second annular frame 12 and a plurality of support members 13. The first annular frame 11 and the second annular frame 12 are arranged relative to each other at intervals. Both ends of the plurality of support members 13 are respectively connected to the first annular frame 11 and the second annular frame 12, and the plurality of support members 13 are arranged at intervals along the circumference of the first annular frame 11. At least two magnetic conductive members 2 are arranged between two adjacent support members 13. The magnetic conductive member 2 located between two adjacent support members 13 can be moved relative to the supporting skeleton 1 along the circumference of the supporting skeleton 1.

[0042] Specifically, Figure 1-3 As shown, the first annular frame 11 and the second annular frame 12 are both circular frames, and the first annular frame 11 and the second annular frame 12 are arranged opposite to each other at intervals along the left-right direction. One end of a plurality of support members 13 is connected to the right end surface of the first annular frame 11 and is arranged at equal intervals along the circumference of the first annular frame 11. The left end surface of the second annular frame 12 is provided with a plurality of mounting grooves arranged at intervals along the circumference of the second annular frame 12. The plurality of mounting grooves and the plurality of support members 13 are arranged opposite to each other at intervals in the left-right direction, so that the right ends of the plurality of support members 13 are correspondingly penetrated into the plurality of mounting grooves, so that the first annular frame 11, the second annular frame 12 and the plurality of support members 13 can be detachably connected, and the magnetic conductive member 2 can be conveniently installed in the load-bearing frame 1. A plurality of magnetic conductive members 2 are arranged between two adjacent support members 13, and the plurality of magnetic conductive members 2 can be movable between two adjacent support members 13 along the circumference of the load-bearing frame 1, and at least one driving member 3 is penetrated between the two support members 13, so that the number of poles of the magnetic tuning ring 100 can be adjusted by changing the position of the driving member 3.

[0043] In some embodiments, the plurality of driving members 3 include a plurality of first driving members 31 and a plurality of second driving members 32. The plurality of first driving members 31 are arranged on the first annular frame 11 of the load-bearing skeleton 1 and are arranged at intervals around the circumference of the load-bearing skeleton 1. The plurality of first driving members 31 can be moved relative to the load-bearing skeleton 1 along the length direction of the load-bearing skeleton 1. The plurality of second driving members 32 are arranged on the second annular frame 12 of the load-bearing skeleton 1 and are arranged at intervals around the circumference of the load-bearing skeleton 1. The plurality of second driving members 32 are arranged to be movable relative to the load-bearing skeleton 1 along the length direction of the load-bearing skeleton 1. Specifically, as Figure 1-2 As shown, a plurality of first driving members 31 are provided on the first annular frame 11 and are movable in the left-right direction, and a plurality of second driving members 32 are provided on the second annular frame 12 and are movable in the left-right direction. Thus, the magnetic poles of the magnetic adjustment ring 100 can be adjusted by cooperating with the plurality of first driving members 31 and the plurality of second driving members 32, so that the setting of the magnetic adjustment ring 100 is more reasonable.

[0044] In some embodiments, an installation cavity is defined between two adjacent driving members 3, at least one magnetic conductive member 2 is disposed in the installation cavity, and the number of magnetic conductive members 2 between two adjacent installation cavities is equal. Thus, when the two magnetic conductive members 2 in the installation cavity are separated or in contact, the number of levels of the magnetic poles in the installation cavity can be easily changed to be the same (that is, the number of levels in each installation cavity is equal), so that the magnetic poles of the load-bearing frame 1 are evenly distributed, and the torque fluctuation during the operation of the gear is reduced.

[0045] In some embodiments, the plurality of magnetic conductive members 2 include a plurality of first magnetic conductive members 21 and a plurality of second magnetic conductive members 22, and the plurality of first magnetic conductive members 21 and the plurality of second magnetic conductive members 22 are alternately arranged on the supporting frame 1, and the first magnetic conductive members 21 and the second magnetic conductive members 22 are arranged between two adjacent supporting members 13. In the first state, the second driving member 32 is passed through the first magnetic conductive member 21 and the second magnetic conductive member 22, so that the second driving member 32 drives the first magnetic conductive member 21 and the second magnetic conductive member 22 to separate to increase the number of poles of the magnetic adjustment ring 100. In the second state, the first driving member 31 is passed through the first magnetic conductive member 21 and the supporting frame, so that the first driving member 31 drives the first magnetic conductive member 21 and the second magnetic conductive member 22 to contact to reduce the number of poles of the magnetic adjustment ring 100. Specifically, as Figure 1-2 As shown, two magnetic conductive parts 2 are provided in each installation cavity (such as Figure 1 The two shown in the figure are respectively the first magnetic conductive member 21 and the second magnetic conductive member 22. The first magnetic conductive member 21 and the second magnetic conductive member 22 can both slide in the load-bearing frame 1 along the circumferential direction of the load-bearing frame 1. In the first state, the first driving member 31 can be inserted between the first magnetic conductive member 21 and the support member 13, or the first driving member 31 can be inserted between the second magnetic conductive member 22 and the support member 13, so that the first magnetic conductive member 21 and the second magnetic conductive member 22 are in contact with each other, thereby reducing the number of poles of the magnetic adjustment ring 100. In the second state, the second driving member 32 is inserted between the first magnetic conductive member 21 and the second magnetic conductive member 22, and the first magnetic conductive member 21 and the second magnetic conductive member 22 are respectively in contact with their adjacent support members 13, thereby increasing the number of poles of the magnetic adjustment ring 100.

[0046] In some embodiments, the circumferential dimensions of the outer circumference of the first magnetic conductive component 21, the outer circumferential surface of the second magnetic conductive component 22, the outer circumferential surface of the first driving component 31 and the outer circumferential surface of the second driving component 32 in the circumferential direction of the load-bearing skeleton 1 are all equal and are L1, the dimension of the outer circumferential surface of the mounting cavity is L2, and 3 times of L1 is equal to L2. Therefore, when the first driving component 31 or the second driving component 32 is inserted into the mounting cavity, it can be ensured that the first magnetic conductive component 21, the second magnetic conductive component 22 and the first driving component 31 fill the entire mounting cavity, or the first magnetic conductive component 21, the second magnetic conductive component 22 and the second driving component 32 fill the entire mounting cavity, thereby preventing the first magnetic conductive component 21, the second magnetic conductive component 22 and the first driving component 31 from shaking in the mounting cavity, or preventing the first magnetic conductive component 21, the second magnetic conductive component 22 and the first driving component 31 from filling the entire mounting cavity and shaking in the mounting cavity, thereby ensuring the stability of the magnetic adjustment ring 100.

[0047] In some embodiments, the magnetic conductive member 2 is provided with a first matching portion 23, the supporting frame 1 is provided with a second matching portion 14 matching with the first matching portion 23, the second matching portion 14 extends along the circumference of the supporting frame 1, one of the first matching portion 23 and the second matching portion 14 is a slide groove, and the other of the first matching portion 23 and the second matching portion 14 is a slide rail, which is arranged in the slide groove so that the magnetic conductive member 2 can be movably installed on the supporting frame 1. Specifically, as Figure 4 and Figure 6 As shown, the front and rear ends of the magnetic conductive part 2 are provided with a first matching part 23, and the front and rear ends of the supporting frame 1 are provided with a second matching part 14. The first matching part 23 and the second matching part 14 can be set according to actual conditions. For example, the first matching part 23 is a slide groove, and the second matching part 14 is a slide rail, or the first matching part 23 is a slide rail, and the second matching part 14 is a slide groove. Thus, through the cooperation between the slide groove and the slide rail, the magnetic conductive part 2 can slide smoothly on the supporting frame 1.

[0048] In some embodiments, a plurality of first driving members 31 and a plurality of second driving members 32 are alternately arranged in a projection plane orthogonal to the length direction of the supporting frame 1. Thus, by inserting the first driving members 31 and the second driving members 32 at different positions of the magnetic conductive member 2, the number of magnetic poles of the magnetic tuning ring 100 is adjusted, thereby improving the diversity of the magnetic tuning ring 100.

[0049] In some embodiments, the magnetic tuning ring 100 further includes a first connecting member 4 , a second connecting member 5 , a first mounting member 6 and a second mounting member 7 .

[0050] The first connecting member 4 and the second connecting member 5 are respectively arranged at two ends of the load-bearing frame 1. Figure 1 , Figure 2 and Figure 7As shown, the first connecting member 4 includes a first connecting plate 41 and a first sleeve 42, the first connecting plate 41 is a vertical plate and the first sleeve 42 is fixed on the left side of the first connecting plate 41, and the first connecting plate 41 can be installed in the first annular frame 11, and the second connecting member 5 includes a second connecting plate and a second sleeve, the second connecting plate can be installed in the second annular frame 12, the second connecting plate is a vertical plate and the second sleeve is fixed on the right side of the second connecting plate.

[0051] The first mounting member 6 is sleeved on the first connecting member 4 and is located at one end of the load-bearing frame 1. The first mounting member 6 is movable relative to the first connecting member 4 along the length direction of the load-bearing frame 1. A plurality of first driving members 31 are arranged on one side of the first mounting member 6 facing the load-bearing frame 1. Specifically, Figure 1 , Figure 2 and Figure 5 As shown, the first mounting member 6 includes a first outer ring plate 61, a first inner ring plate 62 and a plurality of first rods 63. The first inner ring plate 62 is sleeved in the first outer ring plate 61, and the first inner ring plate 62 and the first outer ring plate 61 are spaced apart along the inner and outer directions. The plurality of first rods 63 are arranged between the first outer ring plate 61 and the first inner ring plate 62 and are spaced apart along the circumference of the first outer ring plate 61. The two ends of the plurality of first rods 63 are respectively connected to the first outer ring plate 61 and the first inner ring plate 62, and the first inner ring plate 62 is sleeved on the outer peripheral side of the first sleeve 42. The plurality of first driving members 31 are arranged at the right end of the first outer ring plate 61 and are spaced apart along the circumference of the first outer ring plate 61, so that the plurality of first driving members 31 can move simultaneously in the left and right directions through the first mounting member 6, thereby improving the efficiency of the magnetic pole change of the magnetic tuning ring 100.

[0052] In some embodiments, the second mounting member 7 is sleeved on the second connecting member 5 and is located at the other end of the load-bearing frame 1. The second mounting member 7 is movable relative to the second connecting member 5 along the length direction of the load-bearing frame 1. The plurality of second driving members 32 are arranged on the side of the second mounting member 7 facing the load-bearing frame 1. Specifically, Figure 1 , Figure 2 and Figure 5 As shown, the second mounting member 7 includes a second outer ring plate, a second inner ring plate and a plurality of second rods, the second inner ring plate is sleeved in the second outer ring plate, and the second inner ring plate and the second outer ring plate are spaced apart along the inner and outer directions, a plurality of second rods are arranged between the second outer ring plate and the second inner ring plate and are spaced apart along the circumference of the second outer ring plate, the two ends of the plurality of second rods are respectively connected to the second outer ring plate and the second inner ring plate, and the second inner ring plate is sleeved on the outer peripheral side of the second sleeve, a plurality of second driving members 32 are arranged at the left end of the first outer ring plate 61 and are spaced apart along the circumference of the second outer ring plate, so that the plurality of second driving members 32 can move simultaneously in the left and right directions through the second mounting member 7, thereby improving the efficiency of the magnetic pole change of the magnetic adjustment ring 100.

[0053] In some embodiments, a plurality of magnetic conductive members 2 and a plurality of driving members 3 are alternately arranged one by one in the circumferential direction of the load-bearing skeleton 1, or a plurality of magnetic conductive members 2 are arranged at intervals in the circumferential direction of the load-bearing skeleton 1 to form a plurality of rows, each row includes a plurality of magnetic conductive members 2 arranged in sequence along the circumferential direction of the load-bearing skeleton 1, and a plurality of rows of magnetic conductive members 2 and a plurality of driving members 3 are alternately arranged one by one in the circumferential direction of the load-bearing skeleton 1. Specifically, the magnetic adjustment ring 100 changes in integer multiples under the action of the magnetic conductive members 2 and the driving members 3, for example: the number of the magnetic adjustment ring 100 increases or decreases in integer multiples of 1, 2, 3, 4, 5, 6, etc. In other words, the number of magnetic conductive members 2 in each row is equal, and the spacing between two adjacent rows of magnetic conductive members 2 is equal, so that a plurality of magnetic conductive members 2 are evenly distributed on the load-bearing skeleton 1, which can reduce the torque fluctuation during the operation of the magnetic gear, making the arrangement of the magnetic adjustment ring 100 more reasonable.

[0054] In some embodiments, in the projection plane orthogonal to the length direction of the supporting frame 1, the first annular frame 11 and the second annular frame 12 are both annular, the magnetic conductive member 2 and the outer peripheral surface of the magnetic conductive member 2 are both arc-shaped, and the projection of the magnetic conductive member 2 in the projection plane is located in the first annular frame 11. Specifically, the magnetic conductive member 2 can move in the first annular frame 11 and the second annular frame 12, and the inner and outer arc surfaces of the magnetic conductive member 2 are always in the first annular frame 11, so that the multiple magnetic conductive members 2 and the inner and outer magnetic rings of the permanent magnetic gear respectively form the inner and outer air gaps of the permanent magnetic gear.

[0055] In some embodiments, the load-bearing frame 1 and the driving member 3 are both made of epoxy resin materials, and the magnetic conductive member 2 is prepared into a magnetic conductive block by lamination through a bonding process. Specifically, the load-bearing frame 1 and the driving member 3 can be made of high-performance epoxy resin materials that are non-magnetic and non-conductive. The epoxy resin material not only ensures the rigidity of the magnetic tuning ring 100, but also reduces the eddy current loss of the magnetic tuning ring 100. The magnetic conductive member 2 is prepared into a magnetic conductive block by lamination of silicon steel sheets through a self-adhesive process. There is no conduction or pores between layers, and the insulation properties between layers are intact and evenly distributed, so that the setting of the magnetic conductive member 2 is more reasonable.

[0056] In some embodiments, the driving member 3 has a mounting portion and a driving portion connected to each other, the driving portion is arranged between the plurality of magnetic conductive members 2, and the cross-sectional area of ​​the driving portion gradually decreases in a direction away from the mounting portion. Figure 5 As shown, the mounting portion is a connecting rod with a constant cross section in the left-right direction, the driving portion is arranged at one end of the mounting portion and is in the shape of a triangular prism, so that the driving portion can be conveniently inserted into a plurality of magnetic conductive parts 2.

[0057] The working process of the magnetic tuning ring 100 of the embodiment of the present invention is as follows:

[0058] The first mounting member 6 is pushed to allow multiple first driving members 31 to pass through the first annular frame 11 and be installed in the supporting frame 1. The first driving member 31 pushes two adjacent magnetic conductive members 2 to stick together, and the two adjacent magnetic conductive members 2 form an integral magnetic conductive member 2, thereby reducing the number of magnetic poles of the magnetic adjustment ring 100, or the second mounting member 7 is pushed to allow multiple second driving members 32 to pass through the second annular frame 12 and be installed in the supporting frame 1. The second driving member 32 pushes two adjacent magnetic conductive members 2 to separate, thereby increasing the number of magnetic poles of the magnetic adjustment ring 100.

[0059] In summary, the magnetic tuning ring 100 according to the embodiment of the present invention has the following advantages:

[0060] 1. The magnetic adjustment ring 100 is formed by combining the load-bearing frame 1 as a load-bearing component and processing the entire frame with high-performance engineering plastics. It can withstand large torque loads while realizing local motion functions, meeting the torque output strength requirements of the permanent magnet gear transmission.

[0061] 2. The slide rails and the slide grooves can effectively ensure the positioning of the magnetic conductive part 2. At the same time, the magnetic conductive part 2 can slide in an orderly manner during the adjustment of the load-bearing frame 1, thereby realizing the change of the number of magnetic conductive poles, which can be applied to permanent magnet speed changers to realize the change of speed ratio.

[0062] 3. The combination of the high-performance engineering plastic frame (load-bearing frame 1) and the magnetic conductive part 2 can better ensure the insulation performance of each component of the magnetic adjustment ring 100, greatly reduce the eddy current loss during the operation of the magnetic adjustment ring 100, and improve the efficiency of the permanent magnet speed changer.

[0063] 4. The one-piece load-bearing frame (load-bearing frame 1) made of high-performance special engineering plastics gives the magnetic adjustment ring 100 high rigidity and high strength. The radial deformation during torque output is less than 0.5 mm, which can meet the high torque transmission and smooth operation of the permanent magnet gear speed change device.

[0064] 5. The present invention can ensure good insulation between the components of the magnetic tuning ring 100 and avoid eddy current loss, thereby effectively improving the rotation efficiency of the permanent magnet speed changer.

[0065] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A magnetic tuning ring, characterized in that: include: load-bearing skeleton; A plurality of magnetic conductive parts, wherein the plurality of magnetic conductive parts are sequentially arranged along the circumference of the load-bearing frame and each of the magnetic conductive parts is movable relative to the load-bearing frame along the circumference of the load-bearing frame, at least one magnetic conductive part is spaced apart from the other magnetic conductive parts in the circumferential direction of the load-bearing frame, and within a projection plane orthogonal to the length direction of the load-bearing frame, the sum of the dimensions of the plurality of magnetic conductive parts in the circumferential direction of the load-bearing frame is less than the circumference of the load-bearing frame; A plurality of driving members are arranged on the supporting frame at intervals along the circumference of the supporting frame, and the driving members are movable relative to the supporting frame to drive the magnetic conductive members to move along the circumference of the supporting frame. The magnetic tuning ring has a first state and a second state. In the first state, the driving members are passed through the plurality of magnetic conductive members to drive the magnetic conductive members to separate so as to increase the number of magnetic poles of the magnetic tuning ring. In the second state, the driving members are passed through the plurality of magnetic conductive members to drive the magnetic conductive members to approach each other, and at least two of the magnetic conductive members are in contact under the action of the driving members so as to reduce the number of magnetic poles of the magnetic tuning ring.

2. The magnetic tuning ring according to claim 1, characterized in that: The supporting skeleton includes a first annular frame, a second annular frame and a plurality of supporting members, the first annular frame and the second annular frame are arranged relative to each other at intervals, the two ends of the plurality of supporting members are respectively connected to the first annular frame and the second annular frame, and the plurality of supporting members are arranged at intervals along the circumference of the first annular frame, at least two of the magnetic conductive members are arranged between two adjacent supporting members, the magnetic conductive member located between two adjacent supporting members is movable relative to the supporting skeleton along the circumference of the supporting skeleton, an installation cavity is defined between two adjacent driving members, at least one of the magnetic conductive members is arranged in the installation cavity, and the number of magnetic conductive members between two adjacent installation cavities is equal.

3. The magnetic tuning ring according to claim 2, characterized in that: The plurality of driving members include a plurality of first driving members and a plurality of second driving members, the plurality of first driving members are arranged on the first annular frame of the load-bearing frame and are arranged at intervals around the circumference of the load-bearing frame, and the plurality of first driving members can be moved relative to the load-bearing frame along the length direction of the load-bearing frame. The plurality of second driving members are arranged on the second annular frame of the load-bearing frame and are arranged at intervals around the circumference of the load-bearing frame. The plurality of second driving members are arranged to be movable relative to the load-bearing frame along the length direction of the load-bearing frame.

4. The magnetic tuning ring according to claim 3, characterized in that: The plurality of magnetic conductive members include a plurality of first magnetic conductive members and a plurality of second magnetic conductive members, the plurality of the first magnetic conductive members and the plurality of the second magnetic conductive members are alternately arranged on the bearing frame, and the first magnetic conductive members and the second magnetic conductive members are arranged between two adjacent support members. In the first state, the second driving member is arranged between the first magnetic conductive member and the second magnetic conductive member, so that the second driving member drives the first magnetic conductive member and the second magnetic conductive member to separate to increase the number of poles of the magnetic tuning ring. In the second state, the first driving member is arranged between the first magnetic conductive member and the supporting frame, so that the first driving member drives the first magnetic conductive member and the second magnetic conductive member to contact to reduce the number of poles of the magnetic tuning ring.

5. The magnetic tuning ring according to claim 3, characterized in that: In a projection plane orthogonal to the length direction of the load-bearing frame, a plurality of the first driving members and a plurality of the second driving members are alternately arranged one by one.

6. The magnetic tuning ring according to claim 3, characterized in that: Also includes: A first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are respectively arranged at two ends of the load-bearing frame; a first mounting member, the first mounting member being sleeved on the first connecting member and located at one end of the load-bearing frame, the first mounting member being movable relative to the first connecting member along the length direction of the load-bearing frame, and a plurality of the first driving members being arranged on a side of the first mounting member facing the load-bearing frame; The second mounting member is sleeved on the second connecting member and is located at the other end of the supporting frame. The second mounting member is movable relative to the second connecting member along the length direction of the supporting frame. A plurality of the second driving members are arranged on the side of the second mounting member facing the supporting frame.

7. The magnetic tuning ring according to claim 2, characterized in that: In a projection plane orthogonal to the length direction of the supporting frame, the first annular frame and the second annular frame are both circular, the magnetic conductive component and the outer peripheral surface of the magnetic conductive component are both arc-shaped, and the projection of the magnetic conductive component in the projection plane is located in the first annular frame.

8. The magnetic tuning ring according to claim 1, characterized in that: The plurality of magnetic conductive parts and the plurality of driving parts are alternately arranged one by one in the circumferential direction of the supporting frame. Or multiple magnetic conductive parts are arranged at intervals in the circumferential direction of the load-bearing frame to form multiple rows, each row includes a plurality of magnetic conductive parts arranged in sequence along the circumferential direction of the load-bearing frame, and multiple rows of magnetic conductive parts and multiple driving parts are alternately arranged one by one in the circumferential direction of the load-bearing frame.

9. The magnetic tuning ring according to claim 1, characterized in that: The magnetic conductive component is provided with a first matching portion, and the supporting frame is provided with a second matching portion matching with the first matching portion, the second matching portion extends along the circumference of the supporting frame, one of the first matching portion and the second matching portion is a slide groove, and the other of the first matching portion and the second matching portion is a slide rail, and the slide rail is inserted in the slide groove so that the magnetic conductive component can be movably installed on the supporting frame.

10. The magnetic tuning ring according to claim 1, characterized in that: The bearing frame and the driving member are both made of epoxy resin material, and the magnetic conductive member is a magnetic conductive block prepared by lamination through a bonding process.

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