A height-adjustable magnetic suspension device

Abstract

The present invention discloses a height-adjustable magnetic suspension device, which includes a base, a magnetic short-circuit cavity arranged on the base, a first magnetization component arranged in the magnetic short-circuit cavity and movable and extendable to the outside of the magnetic short-circuit cavity, and a driving mechanism for driving the first magnetization component to move and extend to the outside of the magnetic short-circuit cavity. When using the height-adjustable magnetic suspension device of the present invention, the first magnetization component can be driven to move on the base by the driving mechanism. During the movement of the first magnetization component, the first magnetization component gradually extends out of the magnetic short-circuit cavity, thereby changing the magnetic flux density of the magnetic field between the first magnetization component and the suspension float, and then changing the magnetic field induction intensity, and adjusting the suspension position of the suspension float by changing the magnetic induction intensity. In addition, the magnetic suspension device provided by the present invention can reduce magnetic interference to the external environment.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic suspension, and more particularly to a height-adjustable magnetic suspension device. Background Art

[0002] Magnetic levitation technology refers to a technology that uses magnetic force to overcome gravity to suspend an object. According to the different directions of the magnetic force, magnetic levitation technology is divided into magnetic attraction type magnetic levitation and magnetic repulsion type magnetic levitation. The birth and development of magnetic levitation technology stems from human beings' pursuit of transportation speed. With the increasing maturity of the application of magnetic levitation technology in the field of transportation and the rapid development of science and technology in my country, the application field of magnetic levitation technology is becoming more and more extensive. In daily life, the principle of magnetic levitation can also be used to achieve contactless suspension or movement of some objects.

[0003] At present, most magnetic levitation devices can only suspend objects at a fixed height above a suspension base, and cannot drive the objects to dynamically change the suspension height during operation. Some products install a moving device under the magnetic levitation device, and use the moving device to drive the magnetic levitation device to move, thereby driving the suspended object suspended by the magnetic levitation device to move. However, the moving device itself is large in size and will increase the overall volume of the product. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the present invention provides a height-adjustable magnetic suspension device.

[0005] The technical solution adopted by the present invention to solve its technical problem is: constructing a height-adjustable magnetic levitation device, which includes a base, a magnetic short-circuit cavity arranged on the base, a first magnetization supply component arranged in the magnetic short-circuit cavity and movable and extendable to the outside of the magnetic short-circuit cavity, and a driving mechanism for driving the first magnetization supply component to move and extend out of the magnetic short-circuit cavity.

[0006] In the height-adjustable magnetic levitation device described in the present invention, the magnetic short-circuit cavity is an annular magnetic short-circuit cavity formed by surrounding soft magnetic material and used to short-circuit the magnetic fields inside and outside the magnetic short-circuit cavity. The magnetic short-circuit cavity is provided with an opening that allows the first magnetic supply component to extend outside the magnetic short-circuit cavity and reduce the short-circuit of the magnetic field of the first magnetic supply component.

[0007] In the height-adjustable magnetic levitation device described in the present invention, the magnetic levitation device also includes an inner magnetic short-circuit ring and an outer magnetic short-circuit ring fixed on the base, the outer magnetic short-circuit ring is arranged on the periphery of the inner magnetic short-circuit ring, and the magnetic short-circuit cavity is located between the inner magnetic short-circuit ring and the outer magnetic short-circuit ring.

[0008] In the height-adjustable magnetic levitation device described in the present invention, a short-circuit ring piece is provided in the magnetic short-circuit cavity, which can move up and down in the magnetic short-circuit cavity and is used to install the first magnet supply component. The top cover of the first magnet supply component is provided with a magnetic short-circuit top cover that can move up and down with the first magnet supply component. The first magnet supply component is fixedly installed on the short-circuit ring piece. The inner magnetic short-circuit ring, the outer magnetic short-circuit ring, the short-circuit ring piece, and the magnetic short-circuit top cover are arranged to form the magnetic short-circuit cavity.

[0009] In the height-adjustable magnetic suspension device described in the present invention, a second magnetization component is further provided on the base inside the inner magnetic short-circuit ring, the first magnetization component is a permanent magnet component, and the second magnetization component is an electromagnet component.

[0010] In the height-adjustable magnetic suspension device of the present invention, the driving mechanism comprises at least one vertical screw rotatably disposed in the magnetic short-circuit cavity, and a driving motor driving the at least one vertical screw to rotate synchronously;

[0011] At least one threaded hole is provided on the short-circuit ring at a position corresponding to the vertical screw rod, through which the vertical screw rod can pass and be screwed to the vertical screw rod, or at least one threaded sleeve is fixedly provided on the short-circuit ring at a position corresponding to the vertical screw rod, through which the vertical screw rod can pass and be screwed to the vertical screw rod.

[0012] In the height-adjustable magnetic levitation device described in the present invention, a first gear that rotates with the output shaft of the drive motor is fixedly provided on the output shaft of the drive motor, a central gear that is rotatably connected to the base and meshes with the first gear is provided in the middle of the base, and a second gear that meshes with the central gear is provided on each of the at least two vertical screw rods.

[0013] In the height-adjustable magnetic levitation device described in the present invention, the base is a disc-shaped base, the central gear is a gear ring that can rotate around a central axis, the base is provided with a through hole for at least one vertical screw to pass through, and the second gear is fixed to the bottom end of the vertical screw and is located on the bottom surface of the base.

[0014] In the height-adjustable magnetic suspension device described in the present invention, the electromagnet assembly is one or more electromagnets fixedly mounted in the middle of the bottom surface, and the permanent magnet assembly is one or more permanent magnets fixedly mounted on the short-circuit ring.

[0015] In the height-adjustable magnetic suspension device described in the present invention, the magnetic short-circuit top cover is an annular magnetic short-circuit top cover covered on the first magnetic supply component, or the magnetic short-circuit top cover is a disc-shaped magnetic short-circuit top cover covered on the first magnetic supply component and the second magnetic supply component.

[0016] The implementation of the height-adjustable magnetic levitation device of the present invention has the following beneficial effects: when using the height-adjustable magnetic levitation device of the present invention, the first magnetic supply component can be driven to move on the base by the driving mechanism. During the movement of the first magnetic supply component, the first magnetic supply component gradually extends out of the magnetic short-circuit cavity, thereby changing the magnetic flux density of the magnetic field between the first magnetic supply component and the suspension float, and then changing the magnetic field induction intensity, and adjusting the suspension position of the suspension float by the change of the magnetic induction intensity. In the present application, by adjusting the height position of the first magnetic supply component relative to the magnetic short-circuit cavity and changing the magnetic induction intensity, the position of the suspension float can be adjusted, and there is no need to drive the magnetic levitation device to move through other complex moving structures to achieve the purpose of changing the suspension position of the suspension float, and the miniaturized production of variable height magnetic levitation devices can be achieved, saving production costs and manpower and material resources. In addition, the magnetic levitation device provided by the present invention can reduce magnetic interference to the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 It is a structural schematic diagram of the height-adjustable magnetic suspension device of the present invention;

[0019] Figure 2 It is a first exploded structural schematic diagram of the height-adjustable magnetic suspension device of the present invention;

[0020] Figure 3 It is a second exploded structural schematic diagram of the height-adjustable magnetic suspension device of the present invention;

[0021] Figure 4 It is a third exploded structural schematic diagram of the height-adjustable magnetic suspension device of the present invention. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, in the first embodiment of the height-adjustable magnetic levitation device of the present invention, the magnetic levitation device 10 includes a base 11, a magnetic short-circuit cavity 17 arranged on the base 11, a first magnetization component 13 arranged in the magnetic short-circuit cavity 17 and movable and extendable to the outside of the magnetic short-circuit cavity 17, and a driving mechanism 16 for driving the first magnetization component 13 to move and extend out of the magnetic short-circuit cavity 17.

[0024] It can be understood that the height-adjustable magnetic suspension device 10 of the present invention further includes a suspension float which can suspend the first magnetization component 13 and the second magnetization component 12 .

[0025] When using the height-adjustable magnetic suspension device of the present invention, the first magnetic supply component 13 can be driven to move on the base 11 by the driving mechanism 16. During the movement of the first magnetic supply component 13, the first magnetic supply component 13 gradually extends out of the magnetic short-circuit cavity 17, thereby changing the magnetic flux density of the magnetic field between the first magnetic supply component 13 and the suspension float, and then changing the magnetic field induction intensity. The suspension position of the suspension float is adjusted by the change in magnetic induction intensity. In the present application, the position of the suspension float can be adjusted by adjusting the height position of the first magnetic supply component 13 relative to the magnetic short-circuit cavity 17 and changing the magnetic induction intensity. There is no need to use other complex moving structures to drive the magnetic suspension device 10 to move, so as to achieve the purpose of changing the suspension position of the suspension float. The miniaturized production of the variable height magnetic suspension device 10 can be achieved, saving production costs and manpower and material resources. In addition, the magnetic suspension device 10 provided by the present invention can reduce magnetic interference to the external environment.

[0026] It can be understood that in one embodiment of the present invention, the magnetic short-circuit cavity 17 is composed of four soft magnetic material parts, namely, upper, lower, left and right parts. The first magnetic supply component 13 can extend out of the magnetic short-circuit cavity 17 from one or more directions of the four soft magnetic material parts, namely, upper, lower, left and right parts, in the magnetic short-circuit cavity 17.

[0027] Specifically, the magnetic short-circuit cavity 17 is an annular magnetic short-circuit cavity formed by surrounding soft magnetic material and used to short-circuit the magnetic fields inside and outside the magnetic short-circuit cavity 17. The magnetic short-circuit cavity 17 is provided with an opening that allows the first magnetic supply component 13 to extend out of the magnetic short-circuit cavity 17 and reduce the short-circuit of the magnetic field of the first magnetic supply component 13.

[0028] When the driving mechanism 16 drives the first magnetization supply assembly 13 to move (preferably move up and down) in the magnetic short-circuit cavity 17 , the first magnetization supply assembly 13 can extend from the opening position to the outside of the magnetic short-circuit cavity 17 .

[0029] Furthermore, the magnetic suspension device 10 also includes an inner magnetic short-circuit ring 14 and an outer magnetic short-circuit ring 15 fixed on the base 11 . The outer magnetic short-circuit ring 15 is arranged outside the inner magnetic short-circuit ring 14 , and the magnetic short-circuit cavity 17 is located between the inner magnetic short-circuit ring 14 and the outer magnetic short-circuit ring 15 .

[0030] Furthermore, the magnetic short-circuit cavity 17 is provided with a short-circuit ring piece 18 which can move up and down in the magnetic short-circuit cavity 17 and is used to install the first magnetization supply component 13. The top cover of the first magnetization supply component 13 is provided with a magnetic short-circuit top cover 25 which can move up and down with the first magnetization supply component 13. The first magnetization supply component 13 is fixedly installed on the short-circuit ring piece 18. The inner magnetic short-circuit ring 14, the outer magnetic short-circuit ring 15, the short-circuit ring piece 18 and the magnetic short-circuit top cover 25 are arranged to form the magnetic short-circuit cavity 17.

[0031] In other embodiments, a second magnetization component 12 is further provided on the base 11 inside the inner magnetic short-circuit ring 14 , the first magnetization component 13 is a permanent magnet component, and the second magnetization component 12 is an electromagnet component.

[0032] By disposing the second magnetization component 12 in the inner magnetic short-circuit ring 14 , the magnetic fields of the first magnetization component 13 and the second magnetization component 12 can be separated, thereby reducing the mutual interference between the magnetic fields of the first magnetization component 13 and the second magnetization component 12 .

[0033] In this embodiment, the driving mechanism 16 includes at least one vertical screw rod 19 rotatably disposed in the magnetic short circuit cavity 17, and a driving motor 20 driving the at least one vertical screw rod 19 to rotate synchronously. Preferably, the at least one vertical screw rod 19 is at least one vertical screw rod 19.

[0034] At least one threaded hole 21 is provided on the short-circuit ring 18 at a position corresponding to the vertical screw rod 19, through which the vertical screw rod 19 can pass and be screwed to the vertical screw rod 19. The at least one threaded hole 21 is at least two threaded holes 21.

[0035] During operation, the drive motor 20 drives the vertical screw 19 to rotate, and the vertical screw 19 pushes the short-circuit ring 18 to move up and down in the magnetic short-circuit cavity 17 through the threaded hole 21, thereby driving the permanent magnet assembly to move up and down in the magnetic short-circuit cavity 17, which will be described in detail later.

[0036] In another embodiment, at least one threaded sleeve is fixedly provided on the short-circuit ring piece 18 at a position corresponding to the vertical screw rod 19 , through which the vertical screw rod 19 can pass and is threadedly connected to the vertical screw rod 19 .

[0037] It can be understood that a through hole is provided on the short-circuit ring plate 18 at a position corresponding to the threaded sleeve, through which the vertical screw rod 19 can pass.

[0038] Specifically, a first gear 22 is fixedly provided on the output shaft of the drive motor 20 and rotates with the output shaft of the drive motor 20. A central gear 23 is rotatably connected to the base 11 and meshed with the first gear 22 in the middle of the base 11. Each of the at least two vertical screw rods 19 is provided with a second gear 24 meshed with the central gear 23.

[0039] Preferably, in order to realize a hidden design of the driving mechanism 16, the base 11 is a disc-shaped base 11, the center gear 23 is a gear ring, a ring 26 is provided in the middle of the bottom surface of the base 11 for rotatably mounting the gear ring, and a through hole is provided on the base 11 for allowing at least one vertical screw rod 19 to pass through, and the second gear 24 is fixed to the bottom end of the vertical screw rod 19 and is located on the bottom surface of the base 11.

[0040] Alternatively, the central gear 23 is a ring gear that can rotate around a central axis.

[0041] During operation, the driving motor 20 drives the first gear 22 to rotate through the output shaft, the first gear 22 drives the center gear 23 to rotate, the center gear 23 rotates and drives the second gear 24 to rotate, the second gear 24 rotates and drives the vertical screw rod 19 to rotate, and multiple vertical screw rods 19 are driven by the center gear 23 and rotate synchronously. Multiple vertical screw rods 19 rotate synchronously and drive the short-circuit ring 18 to move up and down, thereby realizing the up and down movement adjustment of the permanent magnet assembly.

[0042] Preferably, the drive motor 20 is a servo motor, which can be automatically controlled to perform forward / reverse rotation and forward / reverse switching according to a control program of a control chip.

[0043] Preferably, the electromagnet assembly is one or more electromagnets fixedly mounted in the middle of the bottom surface, and the permanent magnet assembly is one or more permanent magnets fixedly mounted on the short-circuit ring sheet 18 .

[0044] Furthermore, the magnetic short-circuit top cover 25 is an annular magnetic short-circuit top cover 25 covered on the first magnet supply component 13 , or the magnetic short-circuit top cover 25 is a disc-shaped magnetic short-circuit top cover 25 covered on the first magnet supply component 13 and the second magnet supply component 12 .

[0045] Preferably, the inner magnetic short-circuit ring 14, the outer magnetic short-circuit ring 15, the short-circuit ring sheet 18 and the magnetic short-circuit top cover 25 are all made of soft magnetic material.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A height-adjustable magnetic suspension device, It is characterized in that The magnetic suspension device (10) comprises a base (11), a magnetic short-circuit cavity (17) arranged on the base (11), a first magnetism supply component (13) arranged in the magnetic short-circuit cavity (17) and movable and extendable outside the magnetic short-circuit cavity (17), and a driving mechanism (16) for driving the first magnetism supply component (13) to move and extend outside the magnetic short-circuit cavity (17); The magnetic short-circuit cavity (17) is an annular magnetic short-circuit cavity formed by surrounding a soft magnetic material and used to short-circuit the magnetic field inside and outside the magnetic short-circuit cavity (17); the magnetic short-circuit cavity (17) is provided with an opening that allows the first magnetic supply component (13) to extend outside the magnetic short-circuit cavity (17) and reduces the short-circuit of the magnetic field of the first magnetic supply component (13); The magnetic suspension device (10) further comprises an inner magnetic short-circuit ring (14) and an outer magnetic short-circuit ring (15) fixedly mounted on the base (11), the outer magnetic short-circuit ring (15) being arranged at the periphery of the inner magnetic short-circuit ring (14), and the magnetic short-circuit cavity (17) being located between the inner magnetic short-circuit ring (14) and the outer magnetic short-circuit ring (15); The magnetic short-circuit cavity (17) is provided with a short-circuit ring piece (18) which can move up and down in the magnetic short-circuit cavity (17) and is used to install the first magnet supply component (13); the top cover of the first magnet supply component (13) is provided with a magnetic short-circuit top cover (25) which can move up and down with the first magnet supply component (13); the first magnet supply component (13) is fixedly installed on the short-circuit ring piece (18); the inner magnetic short-circuit ring (14), the outer magnetic short-circuit ring (15), the short-circuit ring piece (18), and the magnetic short-circuit top cover (25) are arranged to form the magnetic short-circuit cavity (17); the inner magnetic short-circuit ring (14), the outer magnetic short-circuit ring (15), the short-circuit ring piece (18), and the magnetic short-circuit top cover (25) are all made of soft magnetic material.

2. The height-adjustable magnetic suspension device according to claim 1, It is characterized in that A second magnetism supply component (12) is also provided on the base (11) and located inside the inner magnetic short-circuit ring (14); the first magnetism supply component (13) is a permanent magnet component, and the second magnetism supply component (12) is an electromagnet component.

3. The height-adjustable magnetic suspension device according to claim 2, It is characterized in that The driving mechanism (16) comprises at least one vertical screw rod (19) rotatably disposed in the magnetic short-circuit cavity (17), and a driving motor (20) driving the at least one vertical screw rod (19) to rotate synchronously; At least one threaded hole (21) is provided on the short-circuit ring piece (18) at a position corresponding to the vertical screw rod (19), through which the vertical screw rod (19) can pass and is screwed to the vertical screw rod (19); or at least one threaded sleeve is fixedly provided on the short-circuit ring piece (18) at a position corresponding to the vertical screw rod (19), through which the vertical screw rod (19) can pass and is screwed to the vertical screw rod (19).

4. The height-adjustable magnetic suspension device according to claim 3, It is characterized in that A first gear (22) is fixedly disposed on the output shaft of the drive motor (20) and rotates along with the output shaft of the drive motor (20); a central gear (23) is disposed in the middle of the base (11) and is rotatably connected to the base (11) and meshes with the first gear (22); and a second gear (24) is disposed on each of the at least two vertical screw rods (19) and meshes with the central gear (23).

5. The height-adjustable magnetic suspension device according to claim 4, It is characterized in that The base (11) is a disc-shaped base (11), the central gear (23) is a gear ring that can rotate around a central axis, the base (11) is provided with a through hole for the at least one vertical screw rod (19) to pass through, and the second gear (24) is fixed to the bottom end of the vertical screw rod (19) and is located on the bottom surface of the base (11).

6. The height-adjustable magnetic suspension device according to claim 5, It is characterized in that The electromagnet assembly is one or more electromagnets fixedly mounted in the middle of the bottom surface, and the permanent magnet assembly is one or more permanent magnets fixedly mounted on the short-circuit ring sheet (18).

7. The height-adjustable magnetic suspension device according to claim 6, It is characterized in that The magnetic short-circuit top cover (25) is an annular magnetic short-circuit top cover (25) provided on the first magnet supply component (13), or the magnetic short-circuit top cover (25) is a disc-shaped magnetic short-circuit top cover (25) provided on the first magnet supply component (13) and the second magnet supply component (12).

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