CN110993249A - Controllable permanent magnetism magnetic field source device of magnetic moment - Google Patents
Controllable permanent magnetism magnetic field source device of magnetic moment Download PDFInfo
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- CN110993249A CN110993249A CN201911352826.3A CN201911352826A CN110993249A CN 110993249 A CN110993249 A CN 110993249A CN 201911352826 A CN201911352826 A CN 201911352826A CN 110993249 A CN110993249 A CN 110993249A
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- permanent magnet
- transmission
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- magnetic field
- field source
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
- H01F7/0284—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles using a trimmable or adjustable magnetic circuit, e.g. for a symmetric dipole or quadrupole magnetic field
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a permanent magnetic field source device with controllable magnetic moment, which comprises a base and a rotary power device arranged on the base, and is characterized in that the rotary power device is connected to a rotary seat arranged on the base in a transmission manner, a first permanent magnet and a second permanent magnet are respectively arranged on two side surfaces of the rotary seat through a transmission rotating shaft, and the rotary seat can control the first permanent magnet and the second permanent magnet to rotate around the transmission rotating shaft in a transmission manner under the operation of the rotary power device so as to change the size of an included angle between the first permanent magnet and the second permanent magnet; the magnetic circuit comprises a pair of semi-annular permanent magnets and a peripheral mechanical rotating device, and the size of an air gap of a permanent magnetic circuit can be adjusted by using the mechanical rotating device, so that the aim of adjusting the external magnetic moment of the device is fulfilled. The permanent magnetic field source device with the controllable magnetic moment, which is designed by the invention, combines the advantages of low energy consumption of the permanent magnetic field source and controllable magnetic moment of the electromagnetic field source, and is suitable for being used on a platform with limited energy.
Description
Technical Field
The invention belongs to the technical field of magnetic field sources, and particularly relates to a permanent magnetic field source device with controllable magnetic moment.
Background
The magnetic field source can generate a magnetic field, has wide application in the field of military and civil, and can be divided into two categories according to the magnetic generation mode: (1) electromagnetic type, (2) permanent magnet type. The electromagnetic type magnetic field source generates a magnetic field by means of conversion of external electric energy, the electric energy is required to be continuously consumed when the electromagnetic type magnetic field source is used, the external energy is not required to be consumed when the permanent magnetic type magnetic field source generates magnetism, the two types of magnetic field sources respectively have advantages and disadvantages, the electromagnetic type magnetic field source is suitable for different use occasions, and some disadvantages exist:
1) the electromagnetic type magnetic field source needs to consume external energy to generate a magnetic field, has generally large power and is difficult to use on a platform with limited energy;
2) the external magnetic moment of the permanent magnet type magnetic field source is not controllable, and the size of the generated magnetic field cannot be controlled;
3) when in use, the permanent magnet type magnetic field source is easy to be adsorbed on a ferromagnetic object, is inconvenient to use and has potential safety hazard;
4) at present, a magnetic field source device with controllable magnetic moment and low power consumption is lacked.
Disclosure of Invention
For solving the deficiencies and defects existing in the prior art, the inventor provides a permanent magnetic field source device with controllable magnetic moment, which solves the problem of large energy consumption of an electromagnetic field source and simultaneously solves the problems of uncontrollable magnetic moment, inconvenient use and potential safety hazard of the permanent magnetic field source. Meanwhile, the magnetic field source has the advantages of an electromagnetic type magnetic field source and a permanent magnetic field source, and the defects of the electromagnetic type magnetic field source and the permanent magnetic field source are avoided. Specifically, the invention is realized by the following steps: the utility model provides a controllable permanent magnetism magnetic field source device of magnetic moment, includes the base and installs the rotary power device on the base, and the transmission of rotary power device is connected to and installs the rotation seat on the base, rotate and install first permanent magnet and second permanent magnet through the transmission pivot respectively on the both sides face of seat, rotate the seat and can rotate around the transmission pivot at first permanent magnet of transmission control and second permanent magnet under rotary power device's operation to change the contained angle size between the two.
Furthermore, the first permanent magnet and the second permanent magnet are in a semi-circular arc shape, the magnetic poles of the first permanent magnet and the second permanent magnet are oppositely distributed and installed, and the first permanent magnet and the second permanent magnet rotate synchronously in opposite directions when rotating.
Furthermore, a spacer is arranged at the moving end part of at least one permanent magnet to prevent the two permanent magnets from being tightly attached and difficult to separate.
Further, the rotary seat includes: the transmission main gear is arranged in the seat body; the first driven gear is in meshed connection with the transmission main gear; the second driven gear is in meshed connection with the first driven gear; the second driven gear is consistent with the first driven gear in specification and is not connected with the transmission main gear; the transmission main gear is in transmission connection with the rotary power device, the first driven gear is directly connected with a transmission rotating shaft of the first permanent magnet, and the second driven gear is directly connected with a transmission rotating shaft of the second permanent magnet.
Furthermore, the rotary power device comprises a stepping motor and a transmission which are installed on the base, a transmission shaft transversely penetrates through the transmission and one end of the transmission shaft is directly connected with the stepping motor, and the other end of the transmission shaft is connected to a transmission rotating shaft in the rotating seat in a transmission mode.
Furthermore, the first permanent magnet and the second permanent magnet can be closed to form a magnetic ring, and the included angle between the first permanent magnet and the second permanent magnet is adjustable within the range of 0-180 degrees.
Furthermore, the stepping motor can rotate positively and negatively.
The working principle of the invention is as follows: the first permanent magnet and the second permanent magnet are magnetic moment sources of the whole magnetic field source device, the rotary power device controls the opening and closing between the first permanent magnet and the second permanent magnet to adjust the included angle through the transmission of a series of mechanical mechanisms, and the magnetic moment can be controlled for the whole magnetic field source device by consuming little electric energy. When the included angle theta between the first permanent magnet and the second permanent magnet is 0, the magnetic circuit is in a closed state, and the magnetic field source device presents magnetic moment outwards
When the included angle theta is 180 degrees, the magnetic field source device has the largest magnetic moment outwards
When the included angle between the two is more than 0 and less than theta and less than 180 degrees, the magnetic moment is controllably adjusted between 0 and the maximum. Compared with a large amount of electric energy consumed by a magnetic field generated by a traditional electromagnetic permanent magnet device, the electric energy consumed by the stepping motor of the device when the magnetic moment of the magnetic field source is controlled can be basically ignored. The invention utilizes the principle that the size of an air gap in a magnetic circuit influences leakage magnetic flux, changes the outward leakage magnetic flux size of the magnetic circuit by controlling the included angle between two permanent magnets, realizes the controllability of the external magnetic moment of a permanent magnetic field source, when the included angle is small, most of the magnetic flux is bound in the magnetic circuit, the external magnetic moment is small, and when the included angle is large, most of the magnetic flux leaks out of the magnetic circuit, and the external magnetic moment is large.
The invention has the beneficial effects that: the device is driven by a motor, uses extremely low energy consumption, controls the size of the magnetic moment generated by the device by controlling the included angle between the two permanent magnets, realizes the controllability of the magnetic moment of the permanent magnetic field source, and combines the advantages of no energy consumption of the magnetic field generated by the permanent magnetic field source and the controllability of the magnetic moment of the electromagnetic field source; meanwhile, the defects that the magnetic moment of the permanent magnetic field source is not controllable and the energy consumption of the magnetic field generated by the electromagnetic field source is high are avoided; thereby achieving the purpose and effect of saving energy consumption.
Drawings
FIG. 1 is a perspective view of a permanent magnetic field source device with controllable magnetic moment;
FIG. 2 is a top view of a magnetic moment controllable permanent magnetic field source device;
FIG. 3 is a schematic view of the magnetic moment variation principle of a magnetic moment controllable permanent magnetic field source device;
FIG. 4 is a schematic structural view of a transmission principle in a rotating seat;
FIG. 5 is a perspective view of a transmission principle structure in a rotary base;
fig. 6 and 7 are schematic perspective views showing magnetic moment changes of a permanent magnetic field source device with controllable magnetic moment;
wherein: the device comprises a base 1, a rotating seat 2, a transmission shaft 3, a first permanent magnet 4, a second permanent magnet 5, a spacer 6, a seat body 7, a transmission main gear 8, a transmission rotating shaft 9, a first driven gear 10, a second driven gear 11, a stepping motor 12 and a transmission 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1: the utility model provides a controllable permanent magnetism magnetic field source device of magnetic moment, as shown in fig. 1 ~ 7, includes base 1 and installs the rotary power device on base 1, and the rotary power device transmission is connected to and installs rotation seat 2 on base 1, rotate and install first permanent magnet 4 and second permanent magnet 5 through transmission pivot 9 on the both sides face of seat 2 respectively, rotate seat 2 and can rotate around transmission pivot 9 at first permanent magnet 4 of rotary power device's operation underdrive control and second permanent magnet 5 to change the contained angle size between the two. The first permanent magnet 4 and the second permanent magnet 5 are in a semi-circular arc shape, are oppositely distributed and installed in a magnetic pole mode, and rotate in opposite directions synchronously. The moving end part of at least one permanent magnet is provided with a spacer 6 to prevent the two permanent magnets from being attached too tightly and difficult to separate. The rotating base 2 includes: a seat body 7 and a transmission main gear 8 arranged in the seat body 7; a first driven gear 10 in meshed connection with the transmission main gear 8; a second driven gear 11 meshed with the first driven gear 10; the second driven gear 11 is consistent with the first driven gear 10 in specification and is not connected with the transmission main gear 8; the transmission main gear 8 is in transmission connection with the rotary power device, the first driven gear 10 is directly connected with the transmission rotating shaft 9 of the first permanent magnet 4, and the second driven gear 11 is directly connected with the transmission rotating shaft 9 of the second permanent magnet 5. The rotary power device comprises a stepping motor 12 and a speed changer 13 which are arranged on the base 1, a transmission shaft 3 which transversely penetrates through the speed changer 13 and has one end directly connected with the stepping motor 12, and the other end of the transmission shaft 3 is in transmission connection with a transmission rotating shaft 9 in the rotating seat 2. The stepper motor 12 can rotate in both forward and reverse directions. When the stepping motor 12 rotates, the stepping motor 12 is started to rotate, the transmission shaft 3 rotates along with the stepping motor, the transmission shaft 3 increases torque through the transmission 13 and transmits the torque to the transmission main gear 8 in the rotating seat 2, when the transmission main gear 8 rotates forwards, the first driven gear 10 in contact with the transmission main gear rotates backwards, the second driven gear 11 in contact with the first driven gear 10 rotates forwards, the first permanent magnet 4 and the second permanent magnet 5 are driven to synchronously rotate backwards relative to the rotating seat 2, when the stepping motor 12 rotates backwards, the rotation direction of the first permanent magnet 4 and the rotation direction of the second permanent magnet 5 are synchronously changed to rotate, the first permanent magnet 4 and the second permanent magnet 5 can be closed to form a magnetic ring, and the included angle range of the first permanent magnet 4 and the second permanent magnet is adjustable.
Along with the rotation of the rotating seat 2, the first permanent magnet 4 and the second permanent magnet 5 can rotate and unfold to two sides along the x direction, and the other end of the first permanent magnet 4 is adhered with a spacer 6 to prevent the two permanent magnets from being adhered too tightly and difficult to separate; after the moment of the stepping motor 12 is increased by the transmission 13, the stepping motor is connected to the rotating base 2 through the transmission shaft 3 to control the rotation of the rotating base 2.
The invention provides a permanent magnetic field source device with controllable magnetic moment, which has controllable external magnetic moment and comprises the following control processes: the stepping motor 12 outputs power to the rotating base 2 through the transmission 13 and the transmission shaft 3, and controls the size of the magnetic moment of the device outwards by controlling the included angle between the first permanent magnet 4 and the second permanent magnet 5 in the transverse view angle direction as shown in fig. 3. When installation, daily deposit and maintenance, its magnetic circuit is in the closed state, and external magnetic moment is zero, avoids it to adsorb danger and inconvenience that brings on the ferromagnetic object, when the magnetic moment of certain size is exported to needs, can be in real time through the external magnetic moment size of contained angle control between the two permanent magnets of control. Only the stepping motor 12 consumes little energy when changing the included angle of the two permanent magnets, and does not consume energy at other times. The electromagnetic field source and the permanent magnetic field source have the advantages of the electromagnetic field source and the permanent magnetic field source, and simultaneously avoid the defects of the electromagnetic field source and the permanent magnetic field source, and have high engineering application value.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. The utility model provides a controllable permanent magnetism magnetic field source device of magnetic moment, includes base (1) and installs the rotary power device on base (1), its characterized in that, the transmission of rotary power device is connected to and installs rotation seat (2) on base (1), rotate and install first permanent magnet (4) and second permanent magnet (5) through transmission pivot (9) on the both sides face of seat (2) respectively, rotate seat (2) and can rotate around transmission pivot (9) first permanent magnet (4) of transmission control and second permanent magnet (5) under rotary power device's operation to change the contained angle size between the two.
2. The source device of claim 1, wherein the first permanent magnet (4) and the second permanent magnet (5) are semi-circular arc-shaped, and the magnetic poles are oppositely distributed and installed, and rotate synchronously in opposite directions.
3. The source device of claim 2, wherein the spacer (6) is installed at the moving end of at least one permanent magnet to prevent the two permanent magnets from tightly adhering and being difficult to separate.
4. A source device of a permanent magnetic field with controllable magnetic moment according to claim 2, characterized in that the rotating base (2) comprises: a seat body (7) and a transmission main gear (8) arranged in the seat body (7); a first driven gear (10) in meshed connection with the transmission main gear (8); a second driven gear (11) meshed with the first driven gear (10); the second driven gear (11) is consistent with the first driven gear (10) in specification and is not connected with the transmission main gear (8); the transmission main gear (8) is in transmission connection with the rotary power device, the first driven gear (10) is directly connected with the transmission rotating shaft (9) of the first permanent magnet (4), and the second driven gear (11) is directly connected with the transmission rotating shaft (9) of the second permanent magnet (5).
5. The source device of the permanent magnetic field with controllable magnetic moment according to any one of claims 1 to 4, characterized in that the rotating power device comprises a stepping motor (12) and a transmission (13) which are installed on the base (1), a transmission shaft (3) which transversely passes through the transmission (13) and has one end directly connected with the stepping motor (12), and the other end of the transmission shaft (3) is in transmission connection with a transmission rotating shaft (9) in the rotating base (2).
6. The source device of a permanent magnetic field with controllable magnetic moment according to any one of claims 1 to 4, wherein the first permanent magnet (4) and the second permanent magnet (5) can be closed to form a magnetic ring, and the included angle between the first permanent magnet and the second permanent magnet is adjustable within the range of 0 to 180 °.
7. A source device of permanent magnetic field with controllable magnetic moment according to claim 5, characterized in that said stepping motor (12) can rotate forward and backward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352826.3A CN110993249A (en) | 2019-12-25 | 2019-12-25 | Controllable permanent magnetism magnetic field source device of magnetic moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352826.3A CN110993249A (en) | 2019-12-25 | 2019-12-25 | Controllable permanent magnetism magnetic field source device of magnetic moment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110993249A true CN110993249A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911352826.3A Pending CN110993249A (en) | 2019-12-25 | 2019-12-25 | Controllable permanent magnetism magnetic field source device of magnetic moment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110993249A (en) |
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2019
- 2019-12-25 CN CN201911352826.3A patent/CN110993249A/en active Pending
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