Rotary permanent magnet array adsorption switch and control method thereof

Abstract

The invention provides a rotary permanent magnet array adsorption switch and a control method thereof, and the switch comprises an assembly frame which comprises an inner ring body and an outer ring body, and the inner ring body can rotate around a first rotation center line; the permanent magnet group comprises a plurality of static magnets and a plurality of moving magnets which are alternately arranged, and the plurality of moving magnets abut against the inner ring body and respectively rotate around a plurality of second rotating center lines through the inner ring body; and the magnetic conductive pieces are connected with the adjacent static magnets and the movable magnets. Magnetic field transmission between the adjacent magnets is achieved through the magnetizer, the movable magnet can be driven by the inner magnetic ring to rotate synchronously, then the magnetic field overturning effect is achieved, and therefore the efficient and accurate magnetic adsorption switch process is completed. Synchronous driving of a plurality of moving magnets can be realized only through one driving mechanism, and compared with the conventional magnetic switch technology at the present stage, the magnetic switch has the remarkable advantages of flexible operation, high controllability, simple structure, low production cost, wide application range and the like.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic switches, and in particular to a rotary permanent magnetic array adsorption switch and a control method thereof. Background Art

[0002] In today's era of rapid technological development, permanent magnets, as an important functional material, have become the focus of research in many fields due to the influence of their magnetization direction and array mode on magnetic field distribution. This influence directly determines the magnetic attraction characteristics generated by the permanent magnet array, thus playing a key role in high-tech fields such as magnetic levitation, magnetic adsorption, and motor drive. Traditional permanent magnet array layouts include Halbach arrays, radial arrays, circumferential arrays, and hybrid arrays. Each layout has its own unique magnetic field characteristics and application scenarios.

[0003] The Halbach array, with its special layout, can produce the strongest magnetic field while using the least amount of permanent magnets, which is one of its significant advantages. More importantly, the Halbach array can form a unilateral magnetic field, that is, it effectively gathers the magnetic lines of force on one side of the magnet and significantly weakens the magnetic lines of force on the other side. This unilateral magnetic field characteristic has brought revolutionary progress to magnetic levitation and magnetic adsorption technology. However, although the Halbach permanent magnet array has a significant advantage in magnetic field strength, the control system of its adsorption state is relatively complex, and often requires the coordination of multiple electrodes, stators, rotors and other structures to achieve precise control, which not only increases the complexity of the system, but also increases the manufacturing cost.

[0004] In addition, the existing Halbach array control method is unable to cope with diverse application scenarios and is difficult to meet the needs of different environments, which to a certain extent limits the expansion of its application scope. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problems of the complicated magnet driving method and limited application scope in the Halbach array in the prior art, and to provide a rotating permanent magnet array adsorption switch and a control method thereof.

[0006] In order to solve the above technical problems, the present invention provides a rotating permanent magnet array adsorption switch, which includes: an assembly frame, the assembly frame includes an inner ring body and an outer ring body, the inner ring body is arranged inside the outer ring body and is concentric with the outer ring body, wherein the inner ring body is connected to a driving device so that it can rotate around a first rotation center line, and an installation space is enclosed between the inner ring body and the outer ring body; a permanent magnet group, the permanent magnet group is arranged in the installation space, and includes a plurality of static magnets and a plurality of moving magnets arranged alternately, the magnetic poles between the plurality of moving magnets are arranged in the same direction, and the magnetic poles between the plurality of static magnets are arranged in the same direction, wherein the plurality of moving magnets are in contact with the inner ring body, and are respectively rotated around a plurality of second rotation center lines through the inner ring body to change the direction of their magnetic poles; a magnetic conductive member, the magnetic conductive member is arranged in the installation space, and connects the adjacent static magnets and the moving magnets.

[0007] In one embodiment of the present invention, the spacing distance between any of the moving magnets and the adjacent static magnets is the same.

[0008] In one embodiment of the present invention, the magnetic conductive part is provided with a plurality of first connecting holes and a plurality of second connecting holes which are alternately arranged, wherein the cross-sectional edge of the first connecting hole is a closed structure, the cross-sectional edge of the second connecting hole is provided with an opening, and the opening of the second connecting hole is in contact with the inner ring body, the plurality of static magnets are correspondingly arranged in the plurality of first connecting holes, and the plurality of dynamic magnets are correspondingly arranged in the plurality of second connecting holes, and are respectively in contact with the inner ring body through the plurality of openings.

[0009] In one embodiment of the present invention, the magnetic conductive component includes a plurality of splicing blocks, a first connecting hole is provided at the center of any of the splicing blocks, and splicing grooves are respectively provided at both ends of any of the splicing blocks, the splicing grooves are recessed inward from both ends of the splicing blocks in the length direction, and the splicing grooves of adjacent splicing blocks are butt-jointed with each other to jointly enclose the second connecting hole.

[0010] In one embodiment of the present invention, the permanent magnet substrate is neodymium iron boron, and the magnetic conductive component substrate is pure iron.

[0011] In one embodiment of the present invention, the moving magnet and the static magnet are both configured as cylindrical structures extending along the thickness direction of the assembly frame, and the arc-shaped side wall of the moving magnet abuts against the outer surface of the inner ring body.

[0012] In one embodiment of the present invention, the surface of the inner ring body is configured as a rough structure.

[0013] The present invention also provides a method for controlling a rotary permanent magnet array adsorption switch, which is used to control the above-mentioned rotary permanent magnet array adsorption switch, comprising: step S1, arranging a plurality of static magnets and a plurality of moving magnets alternately in sequence and arranging them into a ring structure, and at the same time, ensuring that the magnetic poles between the plurality of moving magnets are arranged in the same direction, and the magnetic poles between the plurality of static magnets are arranged in the same direction; step S2, making the plurality of moving magnets respectively abut against each other with the inner ring body, and at the same time making the plurality of static magnets spaced from the inner ring body; step S3, driving the inner ring body to rotate around a first rotation center line, and the plurality of moving magnets respectively rotate around a plurality of second rotation center lines through the friction between them and the inner ring body to change the direction of their magnetic poles; when the magnetic poles of the moving magnet are the same as those of the static magnet, the rotary permanent magnet array adsorption switch is in a closed state and has no magnetic attraction; when the magnetic poles of the moving magnet are opposite to those of the static magnet, the rotary permanent magnet array adsorption switch is in an open state and has magnetic attraction.

[0014] In one embodiment of the present invention, in step S3, the inner ring body is driven by a rotating motor.

[0015] In one embodiment of the present invention, magnetic force is transmitted between adjacent moving magnets and static magnets via magnetic conductive members.

[0016] The above technical solution of the present invention has the following advantages compared with the prior art:

[0017] The present invention discloses a rotating permanent magnet array adsorption switch and a control method thereof, wherein the permanent magnet group is formed into a Halbach array through an assembly frame, and the magnetic field transmission between adjacent magnets is realized through a magnetic conductor, wherein the static magnet is configured as a fixed structure, and the moving magnet can rotate synchronously under the drive of the inner magnetic ring, thereby realizing the effect of magnetic field reversal, thereby completing an efficient and accurate magnetic adsorption switch process. In the present application, the synchronous driving of multiple moving magnets can be realized by only one driving mechanism. Compared with the conventional magnetic switch technology at this stage, the present application has significant advantages such as flexible operation, strong controllability, simple structure, low production cost and wide application range, and has broad application prospects in this field. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a rotating permanent magnetic array adsorption switch in a preferred embodiment of the present invention;

[0020] Figure 2 make Figure 1 A top view of the rotating permanent magnetic array adsorption switch shown;

[0021] Figure 3 yes Figure 1 The three-dimensional structural schematic diagram of the assembly frame in the rotating permanent magnetic array adsorption switch is shown;

[0022] Figure 4 yes Figure 2 The structure diagram at A is enlarged;

[0023] Figure 5 yes Figure 1 The three-dimensional structural diagram of this component and the permanent magnet group in the rotating permanent magnet array adsorption switch shown;

[0024] Figure 6 yes Figure 1 The three-dimensional structural diagram of the splicing block in the rotating permanent magnetic array adsorption switch is shown;

[0025] Figure 7 yes Figure 1 The structure diagram of the rotating permanent magnetic array adsorption switch shown is converted from an open state to a closed state.

[0026] Explanation of the reference numerals in the specification: 100, assembly frame; 110, outer ring body; 120, inner ring body; 130, installation space; 200, magnetic conductive member; 210, first connecting hole; 220, splicing groove; 230, splicing block; 300, permanent magnet group; 310, static magnet; 320, moving magnet; 1001, first rotation center line; 1002, second rotation center line. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0028] Embodiment 1

[0029] See also Figure 1 and Figure 2As shown, this embodiment provides a rotating permanent magnet array adsorption switch, which includes: an assembly frame 100, the assembly frame 100 includes an inner ring body 120 and an outer ring body 110, the inner ring body 120 is arranged inside the outer ring body 110, and is arranged concentrically with the outer ring body 110, wherein the inner ring body 120 is externally connected to a driving device so that it can rotate around a first rotation center line 1001, and an installation space 130 is enclosed between the inner ring body 120 and the outer ring body 110; a permanent magnet group 300, the permanent magnet group 300 is arranged in the installation space 130, which includes a plurality of static magnets 310 and a plurality of dynamic magnets 320 arranged alternately, the magnetic poles of the plurality of dynamic magnets 320 are arranged in the same direction, and the magnetic poles of the plurality of static magnets 310 are arranged in the same direction, wherein the plurality of dynamic magnets 320 abut against the inner ring body 120, and are respectively rotated around a plurality of second rotation center lines 1002 through the inner ring body 120 to change the direction of their magnetic poles; a magnetic conductive member 200, the magnetic conductive member 200 is arranged in the installation space 130, and connects the adjacent static magnets 310 and the dynamic magnets 320.

[0030] The rotating permanent magnet array adsorption switch described in this embodiment forms a Halbach array with the permanent magnet group 300 through the assembly frame 100, and realizes the magnetic field transmission between adjacent magnets through the magnetic conductor, wherein the static magnet 310 is configured as a fixed structure, and the moving magnet 320 can rotate synchronously under the drive of the inner magnetic ring, thereby realizing the effect of magnetic pole reversal, thereby completing an efficient and accurate magnetic adsorption switch process. In this application, the synchronous drive of multiple moving magnets 320 can be achieved through only one driving mechanism. Compared with the conventional magnetic switch technology at this stage, this application has significant advantages such as flexible operation, strong controllability, simple structure, low production cost and wide application range, and has broad application prospects in this field.

[0031] See also Figure 3 As shown, in this embodiment, the assembly frame 100 is used to provide an installation platform for the magnetic conductive member 200 and the permanent magnet group 300, which includes an inner ring body 120 and an outer ring body 110 with different diameters, and an annular installation space 130 is provided between the inner ring body 120 and the outer ring body 110, thereby realizing the annular array layout structure of the permanent magnet group 300 inside it. Further, the inner ring body 120 in this embodiment can rotate around the first rotation center line 1001 under the action of an external driving device. Specifically, the first rotation center line 1001 in this embodiment coincides with the central axis of the inner ring body 120.

[0032] See also Figure 4 and Figure 5As shown, the permanent magnet group 300 in this embodiment specifically includes three static magnets 310 and three moving magnets 320, and the spacing distance between any of the moving magnets 320 and the adjacent static magnets 310 is the same to achieve uniform distribution and transmission of the magnetic field, wherein the substrates of any moving magnet 320 and any static magnet 310 are preferably neodymium iron boron. Further, the static magnets 310 and the moving magnets 320 in this embodiment are both configured as cylindrical structures extending along the thickness direction of the assembly frame 100, and the arc-shaped side walls of the moving magnets 320 abut against the outer surface of the inner ring body 120, thereby achieving the purpose of driving it to rotate around the second rotation center line 1002 through the inner ring body 120. Further, the multiple second rotation center lines 1002 in this embodiment coincide with the cross-sectional center axes of the multiple moving magnets 320, respectively. In different implementations, the surface of the inner ring body 120 may be configured to have a rough structure so as to reduce the possibility of relative slippage between the inner ring body 120 and the fixed magnet.

[0033] See also Figure 5 and Figure 6 As shown, the magnetic conductive member 200 in this embodiment is preferably a pure iron block, on which a plurality of first connection holes 210 and a plurality of second connection holes are arranged alternately, wherein the cross-sectional edge of the first connection hole 210 is a closed structure, the cross-sectional edge of the second connection hole is provided with an opening, and the opening of the second connection hole abuts against the inner ring body 120, and the plurality of static magnets 310 are correspondingly arranged in the plurality of first connection holes 210, and the plurality of dynamic magnets 320 are correspondingly arranged in the plurality of second connection holes, and respectively abut against the inner ring body 120 through the plurality of openings. Further, the magnetic conductive member 200 includes a plurality of splicing blocks 230, the center of any splicing block 230 is provided with a first connection hole 210, and the two ends of any splicing block 230 are respectively provided with splicing grooves 220, the splicing grooves 220 are recessed inwardly from the two ends of the splicing block 230 in the length direction, and the splicing grooves 220 of adjacent splicing blocks 230 abut against each other to jointly enclose the second connection hole. Based on the above structure, the static magnet 310 and the moving magnet 320 can be limited by the magnetic conductive member 200, thereby achieving a stable operation process.

[0034] The magnetic pole layout of the rotating permanent magnetic array adsorption switch when it is turned on is shown in the figure. Figure 7 (left) shows the magnetic pole layout of the rotating permanent magnetic array adsorption switch when it is closed. Figure 7 As shown in (right), it can be seen that the movement process of the moving magnet can realize the opening and closing of its magnetic adsorption.

[0035] Embodiment 2

[0036] This embodiment provides a method for controlling a rotating permanent magnet array adsorption switch, which is used to control the rotating permanent magnet array adsorption switch described in Embodiment 1, and includes:

[0037] Step S1, arranging a plurality of static magnets 310 and a plurality of moving magnets 320 alternately in sequence and arranging them into a ring structure, and at the same time, ensuring that the magnetic poles of the plurality of moving magnets 320 are arranged in the same direction, and the magnetic poles of the plurality of static magnets 310 are arranged in the same direction;

[0038] Step S2, making the plurality of moving magnets 320 abut against the inner ring body 120 respectively, and making the plurality of static magnets 310 spaced from the inner ring body 120;

[0039] Step S3, driving the inner ring body 120 to rotate around the first rotation center line 1001, and the plurality of moving magnets 320 respectively rotate around the plurality of second rotation center lines 1002 through the friction between the moving magnets 320 and the inner ring body 120 to change the direction of their magnetic poles.

[0040] When the magnetic poles of the moving magnet 320 are the same as the magnetic poles of the static magnet 310, the rotary permanent magnet array adsorption switch is in a closed state;

[0041] When the magnetic poles of the moving magnet 320 are opposite to the magnetic poles of the static magnet 310 , the rotary permanent magnet array adsorption switch is in an on state.

[0042] Furthermore, in this embodiment, the inner ring body 120 is driven by a rotating motor, and magnetic force is transmitted between the adjacent moving magnets 320 and the static magnets 310 via the magnetic conductive member 200 .

[0043] Furthermore, a series of state simulation experiments can be carried out by adjusting the distance between the moving magnet 320 and the wall of the inner ring body 120 to verify that the adsorption state of the rotating permanent magnet array adsorption switch can be effectively switched by the rotating permanent magnet array adsorption switch control method, and when the distance between the moving magnet 320 and the wall of the inner ring body 120 increases, it can effectively reduce the residual adsorption force in the closed state.

[0044] In summary, the present invention discloses a rotating permanent magnet array adsorption switch and a control method thereof, wherein the permanent magnet group 300 is formed into a Halbach array through an assembly frame 100, and the magnetic field transmission between adjacent magnets is realized through a magnetic conductor, wherein the static magnet 310 is configured as a fixed structure, and the moving magnet 320 can rotate synchronously under the drive of the inner magnetic ring, thereby realizing the effect of magnetic field reversal, thereby completing an efficient and accurate magnetic adsorption switch process. In the present application, the synchronous driving of multiple moving magnets 320 can be realized by only one driving mechanism. Compared with the conventional magnetic switch technology at this stage, the present application has the significant advantages of flexible operation, strong controllability, simple structure, low production cost and wide application range, and has broad application prospects in this field.

[0045] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A rotating permanent magnetic array adsorption switch, characterized in that: include: An assembly frame, the assembly frame comprising an inner ring body and an outer ring body, the inner ring body being arranged inside the outer ring body and being arranged concentrically with the outer ring body, wherein the inner ring body is connected to a driving device so that it can rotate around a first rotation center line, and an installation space is enclosed between the inner ring body and the outer ring body; A permanent magnet group, the permanent magnet group is arranged in the installation space, and includes a plurality of static magnets and a plurality of moving magnets arranged alternately, the magnetic poles of the plurality of moving magnets are arranged in the same direction, and the magnetic poles of the plurality of static magnets are arranged in the same direction, wherein the plurality of moving magnets abut against the inner ring body, and are respectively rotated around a plurality of second rotation center lines through the inner ring body to change the direction of their magnetic poles; A magnetic conductive member is disposed in the installation space and connects the adjacent static magnets and the moving magnets.

2. The rotary permanent magnetic array adsorption switch according to claim 1, characterized in that: The spacing distance between any of the moving magnets and the adjacent static magnets is the same.

3. The rotary permanent magnetic array adsorption switch according to claim 1, characterized in that: The magnetic conductive component is provided with a plurality of first connecting holes and a plurality of second connecting holes which are alternately arranged, wherein the cross-sectional edge of the first connecting hole is a closed structure, the cross-sectional edge of the second connecting hole is provided with an opening, and the opening of the second connecting hole abuts against the inner ring body, the plurality of static magnets are correspondingly arranged in the plurality of first connecting holes, and the plurality of moving magnets are correspondingly arranged in the plurality of second connecting holes, and abut against the inner ring body through the plurality of openings respectively.

4. The rotary permanent magnetic array adsorption switch according to claim 3 is characterized in that: The magnetic conductive component includes a plurality of splicing blocks, wherein a first connecting hole is provided at the center of any of the splicing blocks, and splicing grooves are respectively provided at both ends of any of the splicing blocks, wherein the splicing grooves are recessed inward from both ends of the splicing blocks in the length direction, and the splicing grooves of adjacent splicing blocks are butted against each other to jointly enclose the second connecting hole.

5. The rotary permanent magnetic array adsorption switch according to claim 1, characterized in that: The permanent magnet substrate is neodymium iron boron, and the magnetic conductive component substrate is pure iron.

6. The rotary permanent magnetic array adsorption switch according to claim 1, characterized in that: The moving magnet and the static magnet are both configured as cylindrical structures extending along the thickness direction of the assembly frame, and the arc-shaped side wall of the moving magnet abuts against the outer surface of the inner ring body.

7. The rotary permanent magnetic array adsorption switch according to claim 1, characterized in that: The surface of the inner ring body is arranged to have a rough structure.

8. A method for controlling a rotating permanent magnetic array adsorption switch, characterized in that: Used to control the rotary permanent magnetic array adsorption switch according to any one of claims 1 to 7, comprising: Step S1, arranging a plurality of static magnets and a plurality of moving magnets alternately in sequence and arranging them into a ring structure, and at the same time, ensuring that the magnetic poles of the plurality of moving magnets are arranged in the same direction, and the magnetic poles of the plurality of static magnets are arranged in the same direction; Step S2, making the plurality of moving magnets abut against the inner ring body respectively, and making the plurality of static magnets spaced from the inner ring body; Step S3, driving the inner ring body to rotate around the first rotation center line, and the plurality of moving magnets respectively rotate around a plurality of second rotation center lines through the friction between the moving magnets and the inner ring body to change the direction of their magnetic poles, When the magnetic poles of the moving magnet are the same as the magnetic poles of the static magnet, the rotary permanent magnet array adsorption switch is in a closed state; When the magnetic poles of the moving magnet are opposite to the magnetic poles of the static magnet, the rotary permanent magnet array adsorption switch is in an on state.

9. The method for controlling the rotary permanent magnetic array adsorption switch according to claim 8, characterized in that: In step S3, the inner ring body is driven by a rotating motor.

10. The method for controlling the rotary permanent magnetic array adsorption switch according to claim 8, characterized in that: Magnetic force is transmitted between the adjacent moving magnets and the adjacent static magnets via magnetic conductive parts.

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