CN110748563A - Magnetic suspension device and rotary lifting mechanism thereof - Google Patents
Magnetic suspension device and rotary lifting mechanism thereof Download PDFInfo
- Publication number
- CN110748563A CN110748563A CN201910933498.XA CN201910933498A CN110748563A CN 110748563 A CN110748563 A CN 110748563A CN 201910933498 A CN201910933498 A CN 201910933498A CN 110748563 A CN110748563 A CN 110748563A
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- base
- suspension
- thread pair
- lifting mechanism
- rotary
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- 239000000725 suspension Substances 0.000 title claims abstract description 90
- 230000007246 mechanism Effects 0.000 title claims abstract description 40
- 238000005339 levitation Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims 2
- 230000003028 elevating effect Effects 0.000 abstract description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0493—Active magnetic bearings for rotary movement integrated in an electrodynamic machine, e.g. self-bearing motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Magnetic levitation device and rotatory elevating system thereof, this rotatory elevating system includes: the fixed seat is respectively provided with a rotating body and a thread pair matching barrel, the rotating body is immovably but rotatably arranged relative to the fixed seat, and the thread pair matching barrel is fixedly arranged relative to the fixed seat; and the movable support is arranged above the fixed seat and used for carrying the basic module of the magnetic suspension device, and the movable support is fixedly provided with a thread pair matching barrel. The thread pair matching barrel and the rotating body are relatively non-rotatably but vertically slidably connected together and form thread matching connection with the thread pair matching barrel, so that when the rotating body rotates, the thread pair matching barrel and the movable support are driven to rotate correspondingly together, and meanwhile, the thread pair matching barrel and the movable support move correspondingly up and down along the thread pair matching barrel. According to the magnetic suspension device, due to the introduction of the rotary lifting mechanism, the suspension body can be in a required rotating state at the moment of automatically separating from the base.
Description
Technical Field
The present invention generally relates to magnetic levitation devices.
Background
Existing magnetic levitation devices, such as magnetic levitation table lamps, sound boxes or globes, generally include a magnetic levitation base (substrate) and a levitation body. The base and the suspension body both comprise magnets, and the magnets in the base can suspend the suspension body at a preset distance above the base through magnetic action (such as magnetic repulsion), so that a floating fantasy visual effect is generated, and the base and the suspension body are well favored by people.
However, in the suspension implementation process of the existing magnetic suspension device, the suspension body is usually manually placed to a proper suspension position relative to the base so as to realize stable suspension of the suspension body. The process of manually finding a suitable levitation location can be difficult and lengthy for the initial (inexperienced) user and may thus lose patience and interest.
The magnetic levitation device disclosed in the patent documents WO2016/202187a1, CN104901587A, CN204687868U, CN205666775U and the like of the applicant comprises a base and a levitation body, wherein the base comprises a magnetic levitation mechanism and a lifter, and the magnetic levitation mechanism with a ring magnet is placed on the lifter and lifted along with the lifter so as to realize the automatic levitation or falling of the levitation body relative to the base. Further, patent documents CN102315805A, CN207202600U, CN102570927A, etc. also disclose similar automatic lifting mechanisms for magnetic levitation devices. Although the lifting mechanism can realize automatic suspension of the suspension body, the suspension body can not freely horizontally rotate after being suspended, and the suspension body still needs to be manually dialed to rotate, so that the application of the lifting mechanism in some occasions is limited.
Disclosure of Invention
The invention aims to provide a magnetic suspension device, wherein a suspension body can not only realize automatic suspension, but also can be controlled to realize free horizontal rotation after suspension.
In this application, the term "base module", "base body" or "base" refers to a functional module which is provided with magnetic components capable of interacting with the suspension body to provide a static equilibrium magnetic field, and which has a controller and other relevant electromagnetic elements and the like to control the suspension body in a balanced suspension position relative to the base module in real time. The term "magnet" has the same meaning as the term "magnet", and refers to a magnetic member having N and S poles, and may be formed alone or in combination to form a "magnetic assembly".
According to a first aspect of the present invention, there is provided a rotary lifting mechanism for a magnetic levitation apparatus having a levitation body and a base module for stably levitating the levitation body relative thereto, the rotary lifting mechanism comprising:
a fixed seat, on which a rotating body and a thread pair matching barrel are respectively mounted, the rotating body being immovable relative to the fixed seat but rotatably mounted around a vertical rotation axis, the thread pair matching barrel being immovably mounted relative to the fixed seat, wherein the thread pair matching barrel is provided with a vertical thread along at least a part of its length; and
a movable support arranged above the fixed seat and used for carrying a basic module of the magnetic suspension device, wherein the movable support is fixedly provided with a thread pair matching barrel which is also provided with vertical threads along at least one part of the length,
the thread pair matching barrel of the movable support is connected with the rotating body of the fixed seat in a relatively non-rotatable and vertically slidable mode and is in thread pair matching connection with the thread pair matching barrel of the fixed seat, so that when the rotating body rotates around the vertical rotating axis of the rotating body, the thread pair matching barrel and the movable support are driven to rotate correspondingly together, and meanwhile, the thread pair matching barrel and the movable support move correspondingly up and down along the thread pair matching barrel.
According to the invention, the base module of the magnetic levitation apparatus and the rotary lifting mechanism can be enclosed in the same base or integrally formed into one base.
The rotary lifting mechanism according to the present invention may further comprise a driver fixedly mounted on the fixed base for driving the rotary body to rotate through, for example, a gear train.
The rotary lifting mechanism according to the present invention may further comprise an electrical slip ring (also referred to as "slip ring" or the like) having a stator and a rotor, wherein the stator of the electrical slip ring is fixedly mounted on the fixing base and connected to an external power source, and the rotor of the electrical slip ring is used for connecting to a base module of the magnetic levitation apparatus. The arrangement of the electric slip ring can effectively avoid the problem of wire twisting caused by relative rotation between the electric wire for supplying power to the base module on the movable support and an external fixed power supply.
According to the rotary lifting mechanism of the present invention, it is preferable that the screw of the movable bracket is formed with an upper and lower through hole for passing through an electric wire for connecting the rotor of the electric slip ring to the base module of the magnetic levitation apparatus.
According to the rotary lifting mechanism of the present invention, the screw thread may not be provided to the lower portion of the fitting cylinder, so that the friction force is reduced and only the guide function is provided.
According to a specific embodiment of the rotary lifting mechanism of the present invention, the rotary body may be disposed inside a thread pair fitting cylinder having an internal thread, and the thread pair fitting cylinder having an external thread and disposed between the thread pair fitting cylinder and the rotary body.
According to another alternative embodiment of the rotary lifting mechanism of the present invention, the rotary body may be provided outside the thread pair fitting cylinder having an external thread, and the thread pair fitting cylinder having an internal thread and being provided between the thread pair fitting cylinder and the rotary body.
According to another aspect of the present invention, there is also provided a base for a magnetic levitation apparatus, the base having a rotary elevating mechanism and a base module rotatably elevated in the base by the rotary elevating mechanism, the base upper surface being used for initially positioning a levitation body. In addition, the base can also comprise a controller and other relevant electromagnetic elements and the like to control the suspension body to be in a balanced suspension position relative to the base in real time. In addition, the base can also comprise an upper limit switch and a lower limit switch, and the controller can also control the upper limit position and the lower limit position of the rotary lifting mechanism through the upper limit switch and the lower limit switch respectively.
The controller according to the invention may be fixedly mounted relative to the base or fixedly mounted on the movable support.
According to another aspect of the present invention, there is also provided a magnetic suspension apparatus, comprising the above-mentioned base and suspension body, wherein the outer surface of the base is provided with a positioning mechanism for initially positioning the suspension body.
According to yet another aspect of the present invention, there is also provided a method of automatically levitating a suspension body, comprising:
providing a base and a suspension body, wherein the base and the suspension body are constructed to enable the suspension body to be stably suspended above the base at a set suspension height and with unlimited horizontal rotation freedom, and a suspension vertical line is formed relative to the base when the suspension body is stably suspended;
initially positioning the suspension body relative to the base to a non-suspension state higher than a set suspension height along a suspension vertical line; and
and spirally lifting the base along the suspension vertical line relative to the suspension body until the suspension body is automatically separated from the initial position and starts to correspondingly rotate freely.
The helical lifting of the present invention means that a rotational movement of the base needs to be performed at least at the critical point where the suspension is out of initial positioning.
The method according to the invention may further comprise: after the suspension begins to rotate freely, the base continues to be lifted a distance until the suspension reaches the desired height.
It will be appreciated by a person skilled in the art that features or combinations of features from different embodiments of the invention may be introduced into each other unless explicitly stated otherwise.
The present invention is based on the inventors' unexpected finding that if the base or base module is rotated simultaneously at the instant the suspension is just in suspension, the suspension will be free to rotate with it.
The invention introduces the rotary lifting mechanism or the spiral lifting mechanism into the magnetic suspension device, so that the suspension body can be in a required rotating state while realizing automatic suspension, namely the suspension body can be in the rotating state under the occasions of convenient viewing without manually handling the suspension body.
Drawings
Fig. 1 is a schematic structural view of a magnetic levitation apparatus according to the present invention; and
fig. 2 is a cross-sectional view of the base shown in fig. 1.
Detailed Description
The present invention is further described with reference to the following examples and figures, which are to be understood by those skilled in the art as being illustrative only and not limiting in any way.
The specific structure and operation of the magnetic levitation apparatus of the present invention can be seen in applicant's prior patent CN1819436B (incorporated herein by reference in its entirety), which includes a base module (also referred to as "base" or "base") and a suspension body, such as a globe, capable of stably levitating above it. The basic module and the suspension body are respectively provided with magnetic components which can interact to provide static balance magnetic fields, and a controller and other related electromagnetic elements and the like are also arranged in the basic module or the base to control the suspension body to be in a balance suspension position relative to the base in real time.
Fig. 1 shows a schematic perspective view of a magnetic levitation apparatus according to the present invention, which includes a base B and a suspension body F suspended above the base B. The suspension F is provided with, for example, a cylindrical magnet m. The base B has therein a rotary lifting mechanism 1 and a base module 3. The upper surface of the base B is also provided with a positioning projection p for initially positioning the suspension body F, for example, projecting into a correspondingly provided recess on the suspension body F.
Fig. 2 is a schematic cross-sectional view of a base B of the magnetic levitation apparatus shown in fig. 1 with a housing removed. As shown more clearly in fig. 2, the rotary lifting mechanism 1 of the present invention comprises a fixed base 10 and a movable bracket 20. The base module 3 is provided on the movable support 20, and includes a circuit board 30, a ring magnet 31, and an electromagnetic coil 32, and a controller and the like, which are not shown.
The holder 10 is formed of a bottom plate 110 and a top plate 111 spaced in parallel. The top plate 111 is fixedly provided with an internal thread fixed cylinder 12 and a cylindrical rotating body or rotating cylinder 13 which is rotatably arranged, and the rotating cylinder 13 is positioned inside the internal thread fixed cylinder 12. Although the lower portion of the internally threaded stator 12 is shown as not being threaded, it may be threaded along its entire length.
As shown, the lower end of the rotary cylinder 13 is fitted with a gear 16 by means of a fastener in the form of a screw. A bidirectional motor 14 is also mounted on the top plate 111, a gear 15 is also mounted on the rotating shaft of the motor 14 through a fastener in the form of a screw, and the gear 15 is engaged with the gear 16.
The movable holder 20 is composed of a top plate 21 and a male screw cylinder 22 fixed to the top plate 21. The top 21 is used for fixedly mounting the base module 3. The external thread moving cylinder 22 is inserted between the internal thread fixed cylinder 12 and the rotary cylinder 13, and forms a thread matching connection with the internal thread fixed cylinder 12 on one hand, and forms an integrally rotatable but vertically slidable connection with the rotary cylinder 13 through the rotation limiting block 130 protruding into the sliding groove 220 therein on the other hand. Thus, when the motor 14 drives the gear 15 to rotate, the gear 15 drives the gear 16 and further drives the rotary cylinder 13 to rotate together, the rotary cylinder 13 drives the external thread moving cylinder 22 to rotate, the external thread moving cylinder 22 rotates relative to the internal thread fixed cylinder 12 and slides up and down relative to the rotary cylinder 13 by means of the thread matching effect of the two, and finally the rotary type ascending or descending of the whole movable support 20 relative to the fixed seat 10 is realized.
Due to the integral rotary ascending of the movable support 20 and the base module 3 thereon, the suspension body F can be automatically in a rotary state (the rotary state can be in a convenient viewing situation without manually handling the suspension body 6) at the moment of separating from the base B (at this time, the distance between the suspension body F and the base module 3 is just the set suspension height when the suspension body stably suspends relative to the base module). For example, if the movable frame 20 and the base module 3 rise clockwise, the suspension body F is automatically suspended in a clockwise rotation state.
As shown in fig. 2, an electrical slip ring or a slip ring is further mounted on the bottom plate 110 of the fixing base 10. The electrical slip ring has a stator 17 and a rotor 18, and the rotor 18 is connected to the circuit board 30 of the base module 3 through an upper and lower through hole formed in the rotary cylinder 13 by a wire 180, and the stator 17 is connected to an external power source through a wire.
Due to the arrangement of the electric slip ring, the problem of wire twisting caused by relative rotation between the electric wire for supplying power to the circuit board 30 of the base module 3 on the movable support 20 and an external fixed power supply can be effectively avoided.
As an alternative to the embodiment shown in fig. 2, it is also possible to dispose the rotary cylinder 13 at the outermost side, while disposing the internal threaded stationary cylinder 12 at the innermost side instead of the external threaded stationary cylinder, and disposing the external threaded movable cylinder 22 still therebetween instead of the internal threaded movable cylinder. This also enables the rotary raising effect of the movable bracket 20 of the present invention.
Although in the embodiment shown in fig. 1 the base module 3 of the magnetic levitation apparatus and the rotary lifting mechanism 1 are integrally enclosed in a base B, the base B may be eliminated according to the application as long as the suspension body F can be initially positioned relative to the base module 3 along the levitation vertical line to a non-levitation state above the set levitation height.
It will be understood by those skilled in the art that the various directional terms described above, including "upper", "lower", etc., are used only in conjunction with the embodiments shown in the drawings and are not intended to limit the invention.
Claims (13)
1. A rotary lifting mechanism for a magnetic levitation apparatus having a levitation body and a base module for stably levitating the levitation body relative thereto, the rotary lifting mechanism comprising:
a fixed seat, on which a rotating body and a thread pair matching barrel are respectively mounted, the rotating body being immovable relative to the fixed seat but rotatably mounted around a vertical rotation axis, the thread pair matching barrel being immovably mounted relative to the fixed seat, wherein the thread pair matching barrel is provided with a vertical thread along at least a part of its length; and
a movable support arranged above the fixed seat and used for carrying a basic module of the magnetic suspension device, wherein the movable support is fixedly provided with a thread pair matching barrel which is also provided with vertical threads along at least one part of the length,
the thread pair matching barrel of the movable support is connected with the rotating body of the fixed seat in a relatively non-rotatable and vertically slidable mode and is in thread pair matching connection with the thread pair matching barrel of the fixed seat, so that when the rotating body rotates around the vertical rotating axis of the rotating body, the thread pair matching barrel and the movable support are driven to rotate correspondingly together, and meanwhile, the thread pair matching barrel and the movable support move correspondingly up and down along the thread pair matching barrel.
2. A rotary lifting mechanism according to claim 1 wherein the base module of the magnetic levitation device is enclosed in the same base or integrally formed with the rotary lifting mechanism.
3. The rotary lifting mechanism according to claim 1, further comprising a driver fixedly mounted on the fixed base for driving the rotary body to rotate.
4. The rotary lifting mechanism according to claim 1, further comprising an electrical slip ring having a stator and a rotor, wherein the stator of the electrical slip ring is fixedly mounted on the mounting and connected to an external power source, and the rotor of the electrical slip ring is used for connecting to the base module of the magnetic levitation apparatus.
5. The rotary lifting mechanism according to claim 4, wherein the screw of the movable bracket is formed with upper and lower through holes to the mating cylinder, and electric wires for connecting the rotor of the electric slip ring to the base module of the magnetic levitation apparatus are passed through the through holes.
6. The rotary lift mechanism of claim 1 wherein the threads are unthreaded from the lower portion of the mating barrel.
7. The rotary lifting mechanism according to claim 1, wherein the rotary body is disposed inside a thread pair fitting cylinder having an internal thread, the thread pair fitting cylinder having an external thread and being disposed between the thread pair fitting cylinder and the rotary body.
8. The rotary lifting mechanism according to claim 1, wherein the rotary body is provided outside a thread pair fitting cylinder having an external thread, the thread pair fitting cylinder having an internal thread and being provided between the thread pair fitting cylinder and the rotary body.
9. A base for a magnetic suspension device is provided, wherein a rotary lifting mechanism and a base module which can rotate and lift in the base through the rotary lifting mechanism are arranged in the base, and the upper surface of the base is used for initially positioning a suspension body.
10. Base according to claim 9, wherein the rotary lifting mechanism is a rotary lifting mechanism according to one of claims 1 to 8.
11. A magnetic levitation apparatus comprising a base as claimed in claim 9 or 10 and a levitation body, wherein the levitation body is initially positioned on the upper surface of the base.
12. A method of automatically levitating a suspension, comprising:
providing a base and a suspension body, wherein the base and the suspension body are constructed to enable the suspension body to be stably suspended above the base at a set suspension height and with unlimited horizontal rotation freedom, and a suspension vertical line is formed relative to the base when the suspension body is stably suspended;
initially positioning the suspension body relative to the base to a non-suspension state higher than a set suspension height along a suspension vertical line; and
and spirally lifting the base along the suspension vertical line relative to the suspension body until the suspension body is automatically separated from the initial position and starts to correspondingly rotate freely.
13. The method of claim 12, further comprising:
after the suspension begins to rotate freely, the base continues to be lifted a distance until the suspension reaches the desired height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933498.XA CN110748563B (en) | 2019-09-29 | 2019-09-29 | Magnetic suspension device and rotary lifting mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933498.XA CN110748563B (en) | 2019-09-29 | 2019-09-29 | Magnetic suspension device and rotary lifting mechanism thereof |
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| Publication Number | Publication Date |
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| CN110748563A true CN110748563A (en) | 2020-02-04 |
| CN110748563B CN110748563B (en) | 2020-12-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086312A (en) * | 2020-07-13 | 2020-12-15 | 李良清 | Multi-dimensional control suspension switch |
| CN112621346A (en) * | 2020-11-30 | 2021-04-09 | 广东鼎泰机器人科技有限公司 | Turntable mechanism of multi-station milling cutter processing machine |
| CN113488308A (en) * | 2021-06-22 | 2021-10-08 | 深圳市火乐科技发展有限公司 | Magnetic levitation device and audio |
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| CN108923690A (en) * | 2018-06-19 | 2018-11-30 | 张友合 | A kind of intelligence self-floating magnetic levitation system |
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| JP2003219581A (en) * | 2002-01-24 | 2003-07-31 | Railway Technical Res Inst | Superconducting flywheel power storage apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086312A (en) * | 2020-07-13 | 2020-12-15 | 李良清 | Multi-dimensional control suspension switch |
| CN112621346A (en) * | 2020-11-30 | 2021-04-09 | 广东鼎泰机器人科技有限公司 | Turntable mechanism of multi-station milling cutter processing machine |
| CN113488308A (en) * | 2021-06-22 | 2021-10-08 | 深圳市火乐科技发展有限公司 | Magnetic levitation device and audio |
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| Publication number | Publication date |
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| CN110748563B (en) | 2020-12-25 |
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