CN117457314A - Electromagnet power-off self-retaining device - Google Patents
Electromagnet power-off self-retaining device Download PDFInfo
- Publication number
- CN117457314A CN117457314A CN202311420769.4A CN202311420769A CN117457314A CN 117457314 A CN117457314 A CN 117457314A CN 202311420769 A CN202311420769 A CN 202311420769A CN 117457314 A CN117457314 A CN 117457314A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- iron core
- yoke body
- main
- electromagnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000004321 preservation Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000004382 potting Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 241000755266 Kathetostoma giganteum Species 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/064—Circuit arrangements for actuating electromagnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
The invention discloses an electromagnet outage self-holding device which comprises a front end cover assembly, a main iron core, a pull rod, a yoke body, a main coil and a permanent magnet sucker assembly, wherein the yoke body is cylindrical, the front end cover assembly is arranged on the yoke body by screws, the other end of the yoke body is connected with the permanent magnet sucker assembly, the main coil is arranged in the yoke body, the pull rod is fixedly connected with the main iron core, the main iron core is arranged in a cavity of the yoke body, a reset spring is arranged on the pull rod, and a permanent magnet, an auxiliary iron core and a demagnetizing coil are arranged on the permanent magnet sucker. The invention utilizes the permanent magnetic chuck to complete the adsorption action on the electromagnet core, thereby realizing automatic locking; when the unlocking is needed, the demagnetizing coil is electrified to realize magnetic field cancellation, and the iron core is unlocked by virtue of the reset spring. The invention realizes electric control, has compact structure, low energy consumption and high reliability, can meet the application requirements of different occasions, and has wide application prospect.
Description
Technical Field
The invention belongs to the technical field of electromagnetism, and particularly relates to an electromagnet power-off self-retaining device.
Background
The electromagnet is a device for generating electromagnetic force by electrifying, and mainly generates attraction forces with different axial magnitudes through electromagnetic effect under different voltages. Generally, the electromagnet is energized, and the iron core moves from an initial position to a suction position and is held, which may be referred to as a latch; conversely, the return of the core from the engaged position to the initial position may be referred to as unlocking.
The electromagnet is locked and unlocked in various modes, such as (1) power-on holding type, namely power-on locking and power-off unlocking (unlocking by external load force or self reset spring unlocking); (2) the magnetic field is kept, namely, the lock is electrified, after the power is off, the magnetic field is generated by the internal permanent magnet to adsorb the iron core to realize the lock and keep, and after the reverse power is electrified, the lock is unlocked; (3) the mechanism is locked, namely, the power-on lock is realized, the internal mechanical device locks after power failure, and the unlocking is realized after the mechanical locking is manually released: (4) the double electromagnets are combined, namely, after the large electromagnet is attracted, the small electromagnet is mechanically locked to lock the large electromagnet, and the small electromagnet is electrified to be attracted when unlocked, so that the large electromagnet is released to unlock. Specifically, the electromagnet is locked in the mode (1) and needs to be continuously electrified, so that the energy consumption is high, the electromagnet is continuously electrified and heated, and the service life is influenced; the mode (2) needs to switch the electrifying polarity externally, and the attraction characteristic of the electromagnet is inevitably reduced due to the influence of the magnetic field of the internal permanent magnet; the energy consumption and self-heating phenomena generated by continuous electrifying of the electromagnet can be avoided by adopting the mode (3), but the manual unlocking is needed, and the requirement of automatic control is not met; the structure of the mode (4) is simpler, but the mechanical locking mechanism is worn and deformed due to the mechanical locking mode, so that the working reliability is reduced.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides an electromagnet power-off self-holding device, which adopts an integrated design of an electromagnet and a permanent magnet sucker, and when the electromagnet is electrified and attracted in place and is powered off, the permanent magnet sucker completes the attraction effect on an electromagnet core to realize automatic locking; when the unlocking is needed, only the coil in the permanent magnet sucker is electrified to realize magnetic field cancellation, and the electromagnet core can realize unlocking under the action of the return spring. The invention has the advantages of full electric control, compact structure, low energy consumption and high reliability.
The technical scheme for solving the technical problems is as follows:
the utility model provides an electro-magnet outage self preservation device, includes front end housing assembly, main iron core, pull rod, the yoke body, main coil and permanent magnet chuck assembly, and the yoke body is the cylinder, and the front end housing assembly is installed on the yoke body with the screw, and the other end and the permanent magnet chuck assembly of the yoke body are connected, and the main coil is installed in the yoke body, and pull rod and main iron core fixed connection, main iron core are arranged in the cavity of the yoke body in, are equipped with reset spring on the pull rod, its characterized in that: the permanent magnet sucker is provided with a permanent magnet, an auxiliary iron core and a demagnetizing coil.
Further, the pull rod is provided with a clamping ring, and the reset spring is arranged between the clamping ring and the front end cover.
Further, the permanent magnet sucker comprises a disc-shaped base, a nested annular auxiliary iron core is arranged on the base, and a demagnetizing coil is arranged in an annular groove formed by the auxiliary iron core.
Further, the permanent magnet, the auxiliary iron core and the demagnetizing coil are encapsulated in the yoke by pouring sealant.
Further, the permanent magnets are annular, and the north and south of the permanent magnets are axially arranged.
Further, the main iron core is of a flat-head structure.
The invention has the advantages that:
(1) When the main coil is electrified, the electromagnetic attraction generated by the electromagnet outage self-holding device overcomes the counterforce of the reset spring to adsorb the main iron core on the surface (namely the locking position) of the permanent magnet sucker assembly; after the main coil is powered off, the permanent magnet sucker assembly overcomes the counter force of the return spring through the magnetic attraction generated by the permanent magnet, and the main iron core is kept to be adsorbed at the locking position; when unlocking, only the demagnetizing coil is electrified, so that the electromagnetic field generated by the demagnetizing coil is opposite to the magnetic field of the permanent magnet, the adsorption action of the magnetic field of the permanent magnet is counteracted, and the main iron core can be reset under the action of the reset spring. Therefore, the external system only needs to electrify the electromagnet to work when locking and unlocking actions are executed, so that the energy consumption can be effectively reduced, and the reliability of long-time work is ensured;
(2) The electromagnet power-off self-retaining device adopts an integrated design, and the volume of the electromagnet power-off self-retaining device after the permanent magnet sucker is integrated is equivalent to that of a conventional power-on retaining electromagnet;
(3) The electromagnet power-off self-retaining device has good adaptability, can meet application requirements of different occasions, and has wide application prospect.
Drawings
Fig. 1 is a perspective view of the present invention.
Figure 2 is a cross-sectional view of the present invention.
Fig. 3 shows the principle of the permanent magnet chuck for electrified demagnetization of the invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, the electromagnet outage self-holding device comprises a front end cover assembly 1, a yoke body 2, a main coil 3, a permanent magnet sucker assembly 4, a permanent magnet 5, an auxiliary iron core 6, a demagnetizing coil 7, pouring sealant 8, a main iron core 9, a pin 10, a pull rod 11, a reset spring 12, a clamping ring 13 and a clamping ring 14, wherein the yoke body 2 is cylindrical, the front end cover assembly 1 is arranged on the yoke body 2 by bolts, the yoke body 2 is connected with the permanent magnet sucker assembly 4, the main coil 3 is arranged in the yoke body 2, the pull rod 11 is fixedly connected with the main iron core 9 by the pin 10, the main iron core 10 is arranged in a cavity of the yoke body 2, the pull rod 11 is provided with the reset spring 12, and the permanent magnet sucker assembly 4 is provided with the permanent magnet 5, the auxiliary iron core 6 and the demagnetizing coil 7. The permanent magnet sucker assembly 4 and the yoke body form a whole in a binding closing mode.
The clamping ring 13 and the clamping ring 14 are matched with a limit groove on the pull rod 11 and are used for installing the reset spring 12; the permanent magnet 5, the auxiliary iron core 6 and the demagnetizing coil 7 are encapsulated in the yoke by pouring sealant 8.
The permanent magnet 5 is in a circular ring shape, the north and south poles of the permanent magnet are axially arranged, and the attraction generated by the magnetic field intensity of the permanent magnet is larger than the counterforce of the reset spring; the field strength generated by the degaussing coil 7 corresponds to the field strength of the permanent magnet.
The main iron core 9 is of a flat-head structure and can be completely attached to the yoke iron and the auxiliary iron core.
With reference to fig. 3, the working process of the electromagnet power-off self-holding device provided in this embodiment is as follows: when neither the main coil 3 nor the degaussing coil 7 is energized, the main core is restricted to the initial position due to the constraint of the return spring. When the system is controlled to electrify the main coil 3 (the demagnetizing coil is not electrified), the coil generates electromagnetic force, the main iron core is influenced by the electromagnetic force to overcome the counterforce of the reset spring to move to the attraction position, meanwhile, the permanent magnetic chuck 4 can superimpose the magnetic field adsorption effect, and the main iron core generates the maximum attraction force after being attached to the permanent magnetic chuck 4; at this time, the main coil is powered off, the main iron core is adsorbed by the magnetic field of the permanent magnetic chuck, and the main iron core is firmly kept at the attraction position against the counter force of the return spring 12, so that automatic locking is realized. When the system needs to unlock the electromagnet, only the demagnetizing coil 7 needs to be electrified, so that the magnetic field generated by the demagnetizing coil 7 and the magnetic field generated by the permanent magnet 5 are opposite in direction (form a counteracting effect), at the moment, the magnetic field adsorption force applied by the main iron core 9 is eliminated or insufficient to overcome the counter force of the return spring, and the main iron core 9 returns to the initial position under the action of the return spring 12, so that automatic unlocking is realized.
Claims (6)
1. The utility model provides an electro-magnet outage self preservation device, includes front end housing assembly, main iron core, pull rod, the yoke body, main coil and permanent magnet chuck assembly, and the yoke body is the cylinder, and the front end housing assembly is installed on the yoke body with the screw, and the other end and the permanent magnet chuck assembly of the yoke body are connected, and the main coil is installed in the yoke body, and pull rod and main iron core fixed connection, main iron core are arranged in the cavity of the yoke body in, are equipped with reset spring on the pull rod, its characterized in that: the permanent magnet sucker is provided with a permanent magnet, an auxiliary iron core and a demagnetizing coil.
2. The electromagnet power-off self-retaining device according to claim 1, wherein a snap ring is arranged on the pull rod, and a return spring is arranged between the snap ring and the front end cover.
3. The electromagnet outage self-holding device according to claim 1, wherein the permanent magnet sucker comprises a disc-shaped base, a nested annular auxiliary iron core is arranged on the base, and a demagnetizing coil is arranged in an annular groove formed by the auxiliary iron core.
4. The electromagnet outage self-holding device according to claim 1, wherein the permanent magnet, the secondary core and the degaussing coil are potted in a yoke with potting adhesive.
5. The electromagnet power-off self-holding device according to claim 1, wherein the permanent magnet is circular ring-shaped, and the north and south poles of the permanent magnet are axially arranged.
6. The electromagnet power outage self-holding device according to claim 1, wherein the main iron core is of a flat head structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311420769.4A CN117457314A (en) | 2023-10-30 | 2023-10-30 | Electromagnet power-off self-retaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311420769.4A CN117457314A (en) | 2023-10-30 | 2023-10-30 | Electromagnet power-off self-retaining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117457314A true CN117457314A (en) | 2024-01-26 |
Family
ID=89581333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311420769.4A Pending CN117457314A (en) | 2023-10-30 | 2023-10-30 | Electromagnet power-off self-retaining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117457314A (en) |
-
2023
- 2023-10-30 CN CN202311420769.4A patent/CN117457314A/en active Pending
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