CN117894607A - Electromagnetic repulsion mechanism for bistable permanent magnet retention and switching-on and switching-off operation method - Google Patents
Electromagnetic repulsion mechanism for bistable permanent magnet retention and switching-on and switching-off operation method Download PDFInfo
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- CN117894607A CN117894607A CN202311855606.9A CN202311855606A CN117894607A CN 117894607 A CN117894607 A CN 117894607A CN 202311855606 A CN202311855606 A CN 202311855606A CN 117894607 A CN117894607 A CN 117894607A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000014759 maintenance of location Effects 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 356
- 229910052742 iron Inorganic materials 0.000 claims abstract description 175
- 230000003068 static effect Effects 0.000 claims abstract description 93
- 230000005291 magnetic effect Effects 0.000 claims abstract description 37
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 27
- 230000009471 action Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 3
- 230000006698 induction Effects 0.000 claims 1
- 238000011017 operating method Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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Abstract
The invention discloses an electromagnetic repulsion operating mechanism maintained by bistable permanent magnets and an opening and closing operating method. The operating mechanism comprises: the brake-separating static iron luer assembly, the brake-closing static iron luer assembly, the driving assembly and the supporting piece. The mechanism is connected with the circuit breaker through a driving component to drive the circuit breaker to switch on or off. When the driving component is at a closing position, the permanent magnet in the closing dead iron luer firmly attracts the driving component through iron magnetic force; when the opening operation is needed, the external circuit discharges the opening coil, the eddy current disc can induce a magnetic field opposite to the opening coil, and a great repulsive force is instantaneously generated to spring the driving assembly, so that the driving assembly moves towards the opening static iron by virtue of inertia. When the driving component is close to the brake separating static iron luer component, the permanent magnet in the brake separating static iron luer component can generate great ferromagnetic attraction force to firmly attract the driving component. The switching-on process and the switching-off process are the same in principle, and the driving sequence is opposite. The invention improves the reliability of the electromagnetic repulsion mechanism.
Description
Technical Field
The invention belongs to the technical field of electric switches, and particularly relates to an electromagnetic repulsion mechanism for bistable permanent magnet retention.
Background
The mechanical switch commonly used at present has the advantages of short electrical life and reduced reliability due to the influence of a switch operating mechanism and the fact that the switching-on and switching-off time is as long as tens of milliseconds, and the arcing time of the switch is long and has great negative influence on an arc extinguishing chamber, a contact and a transmission part. The repulsion mechanism is used as a novel technology of a switch operating mechanism, so that the problems can be effectively solved, but the existing repulsion mechanism generally adopts a bistable disc spring or a pressure spring as an opening and closing position maintaining device, and the scheme has the characteristics of slow speed, fast speed and difference with the characteristics required by opening and closing in the opening and closing process; in addition, when the moving part of the mechanism approaches to the opening and closing position, the moving part is still in an acceleration state, so that the opening and closing impact force is overlarge, and the reliability and the service life are reduced.
Disclosure of Invention
In order to solve the problems of overlarge impact force and poor reliability in the repulsive force mechanism technology in the prior art, the invention provides a high-reliability and low-impact-force quick switch operating mechanism, which is used for solving the problem of low switch reliability in the prior art.
The invention adopts the following technical scheme. A first aspect of the present invention provides a bistable permanent magnet held electromagnetic repulsion operating mechanism comprising:
The brake-separating static iron early-stage assembly, the brake-closing static iron early-stage assembly, the driving assembly and the external power supply;
The driving component is arranged between the opening static iron component and the closing static iron component, and is connected with a moving contact of the switch and used for realizing opening and closing operation of the switch;
The brake-separating static iron luer assembly and the brake-closing static iron luer assembly both comprise permanent magnets, the permanent magnets are used for restraining the driving assembly,
The external power supply is respectively connected with the opening static iron early-out assembly and the closing static iron early-out assembly and is used for generating electromagnetic repulsive force for exciting the driving assembly so that the driving assembly moves from one stable position to the other stable position.
Preferably, the closing static iron component is symmetrical to the opening static iron component in structure, and the opening static iron component comprises: a first coil, a first luer, and a first permanent magnet; the first coil is arranged on one side of the first iron end facing the driving assembly; the first permanent magnet is wrapped in the first iron lug, and when the driving assembly is at the opening position, the first permanent magnet, the first iron lug and the driving assembly form a closed magnetic loop to provide ferromagnetic attraction of the driving assembly at the opening position;
The static iron component of combined floodgate includes: the second coil, the second iron lug and the second permanent magnet; the second coil is arranged on one side of the second iron lug towards the driving component, the second permanent magnet is wrapped inside the second iron lug, and when the driving component is in a closing position, the second permanent magnet, the second iron lug and the driving component form a closed magnetic loop to provide ferromagnetic attraction force of the driving component at the closing position.
Preferably, the side of the first luer facing the drive assembly is provided with an annular groove for placing the first coil;
The second iron is provided with the annular groove towards drive assembly's one side for place the second coil.
Preferably, the driving assembly includes: the device comprises a movable iron plate, a first repulsive force disc, a second repulsive force disc and a driving rod;
The driving rod penetrates through the center of the movable iron luer and is fixedly connected with the movable iron luer, and the driving rod moves up and down along with the movable iron luer;
The first repulsive force disc is arranged on one side of the movable iron lug, which faces to the brake separating static iron assembly;
The second repulsion tray is arranged on one side of the moving iron early towards the closing static iron component.
Preferably, a groove is formed on one side of the movable iron lug, which faces to the opening static iron assembly, for accommodating the first repulsive force disc, and a groove is formed on one side of the movable iron lug, which faces to the closing static iron assembly, for accommodating the second repulsive force disc
The first repulsion tray and the second repulsion tray are connected with the moving iron at two sides of the moving iron and are respectively positioned at positions opposite to the first coil and the second coil, and when the first coil or the second coil is electrified, electromagnetic repulsion is generated due to the effect of induced eddy current.
Preferably, the external power supply includes: the device comprises a first power module, a driving capacitor, a thyristor, a second power module and a button;
The first power supply module is connected with the driving capacitor in parallel, the anode of the first power supply module is connected with the anode of the thyristor, the cathode of the thyristor is grounded, and the cathode of the thyristor is used as a first output end of an external power supply;
The control pole of the thyristor is connected with the positive pole of the second power supply module through the button, and the negative pole of the second power supply module is commonly grounded with the negative pole of the first power supply module and is used as the second output end of the external power supply.
Preferably, the first power module is a voltage-adjustable power supply, the driving capacitor is an adjustable capacitor, and the switching-on and switching-off action speed of the switch is adjusted by adjusting the voltage of the first power module and the capacity of the driving capacitor.
Preferably, the first coil and the first controllable switch are connected in series, and then the two ends of the first coil and the first controllable switch are respectively connected to the first output end and the second output end;
the two ends of the second coil are respectively connected to the first output end and the second output end after being connected in series with the second controllable switch.
Preferably, the electromagnetic repulsion operating mechanism further includes: a support assembly;
the support assembly comprises a plurality of metal columns made of non-magnetic conductive materials, and the brake-opening static iron assembly and the brake-closing static iron assembly are fixed together, so that the relative positions are kept unchanged.
The second aspect of the invention provides a switching-on/off operation method of an electromagnetic repulsion operation mechanism based on bistable permanent magnet maintenance, which comprises the following steps:
when the electromagnetic repulsion force operating mechanism held by the bistable permanent magnet is at the opening position, the driving assembly and the opening static iron yoke assembly are attracted together through the ferromagnetic force generated by the permanent magnet;
When the electromagnetic repulsion force operating mechanism needs to be switched on, an external power supply discharges the switching-off static iron early-on assembly, the switching-off static iron early-on assembly generates a magnetic field, induced eddy currents are generated on adjacent driving assemblies by the magnetic field, the induced magnetic field generated by the eddy currents is opposite to the magnetic field of the switching-off static iron early-on assembly, electromagnetic repulsion force is generated on the driving assemblies, and when the repulsion force is larger than ferromagnetic attraction force, the driving assemblies spring open and move towards the switching-on static iron assembly; when the driving component moves to the closing dead iron luer component, the driving component can be attracted together by the closing dead iron luer component through the ferromagnetic force generated by the permanent magnet;
When the electromagnetic repulsion force operating mechanism is positioned at a closing position, the driving assembly and the closing static iron early-on assembly are attracted together through iron magnetic force generated by the permanent magnet, when the operating mechanism needs to be operated for opening the gate, an external power supply discharges the closing static iron early-on assembly, the closing static iron early-on assembly generates a magnetic field, an induced vortex is generated on the adjacent driving assembly by the magnetic field, the direction of the induced magnetic field generated by the vortex is opposite to that of the closing static iron early-on assembly, electromagnetic repulsion force is generated on the driving assembly, and when the repulsion force is larger than the ferromagnetic attraction force, the driving assembly bounces off and moves towards the opening static iron assembly; when the driving component moves to the vicinity of the brake separating static iron luer component, the driving component is attracted together again by the brake separating static iron luer component through the ferromagnetic force generated by the permanent magnet.
Compared with the prior art, the invention has the beneficial effects that at least: according to the bistable permanent magnet maintained high-speed operating mechanism provided by the invention, the permanent magnet is used for restraining the moving part during opening and closing, and no extra impact force is generated during opening and closing actions; the operation mechanism is extremely fast in action, the mechanism can finish the action within 1ms at the highest speed from the opening to the closing position or from the closing to the opening position, and the speed can be reduced according to the use requirement; the coil in the switching-on static iron luer component and the coil in the switching-off static iron luer component are respectively connected with the same external power supply, and when the switching-on operation is needed or performed, a button corresponding to the power supply is pressed, so that the switching-on static iron luer component is simple in structure and convenient to operate.
Drawings
FIG. 1 is a block diagram of a bistable permanent magnet held electromagnetic repulsion mechanism according to an embodiment of the invention;
fig. 2 is a schematic diagram of an external driving circuit according to an embodiment of the present invention;
FIG. 3 is a top view of a bistable permanent magnet held electromagnetic repulsion mechanism according to an embodiment of the invention;
FIG. 4 is a side view of a bistable permanent magnet held electromagnetic repulsion mechanism according to an embodiment of the invention;
in the figure:
10-brake-separating static iron components, 11-first coils, 12-first iron lugs and 13-first permanent magnets;
20-a closing static iron assembly, 21-a second coil, 22-a second iron lug and 23-a second permanent magnet;
31-moving iron, 31-first repulsive force disc, 33-second repulsive force disc 33, 31-driving rod;
40-supporting member;
50-an external power source; 51-first power module, 52-driving capacitor, 53-thyristor, 54-second power module, 55-button.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. The described embodiments of the application are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are within the scope of the present application.
As shown in fig. 1, embodiment 1 of the present invention provides an electromagnetic repulsion force operating mechanism for bistable permanent magnet retention, comprising: the brake release static iron luer assembly 10, the brake closing static iron luer assembly 20, the driving assembly, the supporting piece 40 and the external power supply 50. It is worth noting that the bistable permanent magnet maintained high-speed operating mechanism provided by the invention has no extra impact force when the permanent magnet is used for restraining the opening and closing actions of the moving part during opening and closing.
The brake-separating static iron assembly 10 and the brake-closing static iron assembly 20 are in axisymmetric structures, and the driving assembly is arranged between the brake-separating static iron assembly 10 and the brake-closing static iron assembly 20.
The brake-separating static iron assembly 10 comprises: a first coil 11, a first luer 12 and a first permanent magnet 13.
The first coil 11 is arranged on one side of the first iron lug 12 facing the driving component and is connected with an external power supply 50 through a first controllable switch;
The first iron luer 12 is annular, and a through hole for the driving rod 34 to pass through is formed in the middle; the first luer 12 is provided with an annular groove around the through hole towards one side of the drive assembly for placing the first coil 11;
the first permanent magnet 13 is wrapped inside the first iron lug 12, and when the driving assembly is at the opening position, the first permanent magnet 13, the first iron lug 12 and the driving assembly form a closed magnetic loop to provide ferromagnetic attraction force of the driving assembly at the opening position.
The closing static iron assembly 20 and the opening static iron assembly 10 adopt a symmetrical structural design, and the closing static iron assembly 20 comprises: a second coil 21, a second iron lug 22 and a second permanent magnet 23.
The second coil 21 is arranged on the side of the second iron lug 22 facing the driving component and is connected with an external power supply 50 through a second controllable switch;
The second iron luer 22 is annular, and a through hole for the driving rod 34 to pass through is formed in the middle; the second luer 22 is provided with an annular groove around the through hole towards one side of the drive assembly for placing the second coil 21;
the second permanent magnet 23 is wrapped inside the second iron lug 22, and when the driving assembly is at the closing position, the second permanent magnet 23, the second iron lug 22 and the driving assembly form a closed magnetic loop to provide ferromagnetic attraction force of the driving assembly at the closing position.
The drive assembly includes: a movable iron lug 31, a first repulsive force disc 32, a second repulsive force disc 33 and a driving rod 34.
The movable iron luer 31 is annular, the driving rod 34 passes through the center of the movable iron luer 31 and is fixedly connected with the movable iron luer 31, and the driving rod 34 moves up and down along with the movable iron luer 31.
The movable iron lug 31 is provided with a groove on one side facing the opening static iron assembly 10 for accommodating the first repulsive force disc 32, and is provided with a groove on one side facing the closing static iron assembly 20 for accommodating the second repulsive force disc 33.
The first repulsive force disc 32 and the second repulsive force disc 33 are connected with the moving iron at both sides of the moving iron, and when the first coil 11 or the second coil 32 is electrified, a great electromagnetic repulsive force is generated due to the induced eddy current effect, so that the moving part of the mechanism breaks away from the control of the ferromagnetic attraction force and moves to the other stable position (opening/closing position) at a very high speed.
The driving rod 34 is connected with the moving contact of the switch and drives the moving contact to move.
The first coil 11 and the second coil 21 are wound by flat copper wires, the number of turns is small, the resistance is extremely small, and the coil is connected with an external direct current power supply through a wire. When the mechanism needs to be operated, the external power supply 50 is turned on, and a short-circuit current and a great magnetic field are generated.
The first iron luer 12, the second iron luer 22 and the movable iron luer 31 are made of iron-based materials with high magnetic conductivity, and are high in mechanical strength and good in wear resistance. To increase the corrosion resistance, the surfaces of the first iron luer 12, the second iron luer 22 and the movable iron luer 31 are plated with nickel or iron-nickel alloy.
The support assembly 40 includes a plurality of metal columns of non-magnetically permeable material that hold the opening and closing stator assemblies 10, 20 together, maintaining the relative position unchanged, preferably but not limited to, the support assembly 40 includes 4 metal columns of non-magnetically permeable material.
The external power supply 50 includes: a first power module 51, a driving capacitor 52, a thyristor 53, a second power module 54 and a button 55.
The first power module 51 is connected in parallel with the driving capacitor 52, the anode is connected with the anode of the thyristor 53, the cathode is grounded, the cathode of the thyristor 53 is used as the first output end of the external power supply 50,
The control electrode of the thyristor 53 is connected to the positive electrode of the second power supply module 54 via the button 55, and the negative electrode of the second power supply module 54 is commonly grounded to the negative electrode of the first power supply module 51 and serves as a second output terminal of the external power supply 50.
The first controllable switch is connected with the first coil in series, and then the two ends of the first controllable switch are respectively connected to the first output end and the second output end;
The two ends of the second controllable switch are respectively connected to the first output end and the second output end after being connected with the second coil in series.
The action speed of the electromagnetic repulsion force operating mechanism held by the bistable permanent magnet is influenced by the voltage of the first power supply module 51 and the capacity of the driving capacitor 52, the capacity of the driving capacitor 52 is unchanged, and the higher the voltage of the first power supply module 51 is, the faster the speed is; the voltage of the first power module 51 is unchanged, and the larger the capacity of the driving capacitor 52 is, the faster the speed is. In a further preferred embodiment, the first power module 51 is an adjustable power source, the driving capacitor 52 is an adjustable capacitor, and the switching speed is adjusted by adjusting the voltage of the first power module 51 and the capacity of the driving capacitor 52.
The embodiment 2 of the invention provides a switching-on/off method of an electromagnetic repulsion operating mechanism based on bistable permanent magnet maintenance, which comprises the following steps:
In the external power supply 50, the first power supply module 51 charges the driving capacitor 52.
When the electromagnetic repulsion force operating mechanism held by the bistable permanent magnet is in the brake-separating position, the movable iron yoke 31 and the brake-separating static iron yoke assembly 10 are firmly attracted together through the ferromagnetic force generated by the first permanent magnet 13. When the operating mechanism needs to be switched on, the external power supply 50 discharges the first coil 11 of the split-gate static luer assembly 10, and the current of the first coil 11 rises instantaneously, so that a great magnetic field is generated. The magnetic field generates induced eddy current on the adjacent first repulsive force disc 32, the direction of the induced magnetic field generated by the eddy current is opposite to that of the magnetic field of the first coil 11, and extremely large electromagnetic repulsive force is generated on the first repulsive force disc 32, and when the repulsive force is larger than the ferromagnetic attraction force, the moving iron lug 31 is sprung open and moves at a high speed towards the direction of the closing static iron assembly 20. When the movable iron luer 31 moves to the vicinity of the closing dead iron luer component, the movable iron luer can be firmly attracted together by the closing dead iron luer component through the ferromagnetic force generated by the permanent magnet.
When the electromagnetic repulsion force operating mechanism held by the bistable permanent magnet is at the closing position, the movable iron yoke 31 and the closing static iron yoke assembly 20 are firmly attracted together through the ferromagnetic force generated by the second permanent magnet 23. When the operating mechanism needs to be operated to open, the external power supply 50 discharges the second coil 21 of the closing dead iron luer assembly 20, and the current of the second coil 21 rises instantaneously, so that a great magnetic field is generated. The magnetic field generates induced eddy current on the adjacent second repulsive force disc 33, the direction of the induced magnetic field generated by the eddy current is opposite to that of the second coil 21, and extremely large electromagnetic repulsive force is generated on the second repulsive force disc 33, and when the repulsive force is larger than the ferromagnetic attraction force, the moving iron lug 31 bounces off and moves at a high speed towards the direction of the brake-separating static iron assembly 10. When the movable iron luer 31 moves to the vicinity of the brake-separating static iron luer component, the movable iron luer can be firmly attracted together again by the brake-separating static iron luer component through the ferromagnetic force generated by the permanent magnet.
In a preferred but non-limiting embodiment of the invention, the bistable permanent magnet held high speed operating mechanism is characterized in that the operating mechanism operates extremely fast, the mechanism can complete the operation within 1ms at maximum from the opening to the closing position or from the closing to the opening position, and the speed can also be reduced according to the use requirement.
According to the invention, the external power supply driving mechanism acts, and the opening and closing holding force is provided by the permanent magnet. In a further preferred but non-limiting embodiment of the present invention, the opening action process comprises: when the operating mechanism receives an action command, the button 55 is pressed, the thyristor 53 is conducted, the driving capacitor 52 discharges (as shown in fig. 2), and the second coil 21 in the closing static luer assembly generates circulation; because the coil resistance is extremely small, the circulation peak value approximates to short-circuit current, and the coil circulation generates a great changing magnetic field in the vertical direction; under the influence of the magnetic field, the second repulsive force disc 33 generates induced current, the direction of the magnetic field generated by induced current coupling is opposite to that of the magnetic field generated by the coil, electromagnetic repulsive force far greater than the permanent magnet holding force is generated, and the repulsive force disc is pushed to drive the moving part to move in a direction away from the coil (brake-separating static iron yoke assembly). The whole process from the spring opening of the moving part to the brake separating static iron and luer assembly mainly depends on inertia. When approaching the brake-separating static iron luer component, the movable iron luer is subjected to ferromagnetic suction force generated by the brake-separating static iron luer component and is firmly restrained at the brake-separating position. The motion process of closing is the same as that of opening, and the directions are opposite.
The opening and closing operation further includes a step of adjusting a switching action speed, specifically, the mechanism action speed is affected by the voltage of the first power module 51 and the capacity of the driving capacitor 52, the capacity of the driving capacitor 52 is unchanged, and the higher the voltage of the first power module 51 is, the faster the speed is; the voltage of the first power module 51 is unchanged, and the larger the capacity of the driving capacitor 52 is, the faster the speed is. In a further preferred embodiment, the first power module 51 is an adjustable power source, the driving capacitor 52 is an adjustable capacitor, and the switching speed is adjusted by adjusting the voltage of the first power module 51 and the capacity of the driving capacitor 52.
The present disclosure may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present disclosure.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (10)
1. An electromagnetic repulsion operating mechanism for bistable permanent magnet retention, comprising:
the brake-opening static iron luer assembly (10), the brake-closing static iron luer assembly (20), the driving assembly and the external power supply (50);
the driving component is arranged between the opening static iron component (10) and the closing static iron component (20), and is connected with a moving contact of the switch and used for realizing opening and closing operation of the switch;
the brake-separating static iron luer assembly (10) and the brake-closing static iron luer assembly (20) both comprise permanent magnets, the permanent magnets are used for restraining the driving assembly in the brake-separating and brake-closing process,
The external power supply (50) is respectively connected with the opening static iron early-stage assembly (10) and the closing static iron early-stage assembly (20) and is used for generating electromagnetic repulsive force for exciting the driving assembly to enable the driving assembly to move from one stable position to the other stable position.
2. The bistable permanent magnet held electromagnetic repulsion operating mechanism of claim 1, wherein:
The brake-on static iron assembly (20) is symmetrical to the brake-off static iron assembly (10) in structure, and the brake-off static iron assembly (10) comprises: a first coil (11), a first luer (12) and a first permanent magnet (13); the first coil (11) is arranged on one side of the first iron (12) facing the driving assembly; the first permanent magnet (13) is wrapped in the first iron lug (12), and when the driving assembly is at the opening position, the first permanent magnet (13), the first iron lug (12) and the driving assembly form a closed magnetic loop to provide ferromagnetic attraction force for the driving assembly at the opening position;
The closing dead-iron assembly (20) comprises: a second coil (21), a second iron lug (22) and a second permanent magnet (23); the second coil (21) is arranged on one side of the second iron lug (22) facing the driving component, the second permanent magnet (23) is wrapped inside the second iron lug (22), and when the driving component is in a closing position, the second permanent magnet (23), the second iron lug (22) and the driving component form a closed magnetic loop to provide ferromagnetic attraction force of the driving component at the closing position.
3. The bistable permanent magnet held electromagnetic repulsion operating mechanism of claim 2, wherein:
The side of the first iron (12) facing the driving component is provided with an annular groove for placing a first coil (11);
the side of the second iron (22) facing the driving component is provided with an annular groove for placing a second coil (21).
4. A bistable permanent magnet held electromagnetic repulsion operating mechanism according to any one of claims 1 to 3, characterised in that:
The drive assembly includes: a movable iron (31), a first repulsive force disc (32), a second repulsive force disc (33) and a driving rod (34);
the movable iron (31) is annular, the driving rod (34) passes through the center of the movable iron (31) and is fixedly connected with the movable iron (31), and the driving rod (34) moves up and down along with the movable iron (31);
The first repulsive force disc (32) is arranged on one side of the movable iron lug (31) facing the brake separating static iron assembly (10);
The second repulsive force disc (33) is arranged on one side of the movable iron lug (31) facing the closing static iron assembly (20).
5. The bistable permanent magnet retained electromagnetic repulsion operating mechanism of claim 4, wherein:
One side of the movable iron (31) facing the opening static iron component (10) is provided with a groove for accommodating a first repulsive force disc (32), and one side facing the closing static iron component (20) is provided with a groove for accommodating a second repulsive force disc (33)
The first repulsion disc (32) and the second repulsion disc (33) are connected with the moving iron at two sides of the moving iron and are respectively positioned at positions opposite to the first coil (11) and the second coil (32), and when the first coil (11) or the second coil (32) is electrified, electromagnetic repulsion is generated due to the induction eddy current effect.
6. A bistable permanent magnet held electromagnetic repulsion operating mechanism according to claim 2 or 3 wherein:
The external power supply (50) includes: a first power supply module (51), a driving capacitor (52), a thyristor (53), a second power supply module (54) and a button (55);
the first power supply module (51) is connected with the driving capacitor (52) in parallel, the anode of the first power supply module is connected with the anode of the thyristor (53), the cathode of the thyristor (53) is grounded, and the cathode of the thyristor (53) is used as a first output end of the external power supply (50);
the control electrode of the thyristor (53) is connected with the positive electrode of the second power supply module (54) through the button (55), and the negative electrode of the second power supply module (54) is grounded together with the negative electrode of the first power supply module (51) and serves as a second output end of the external power supply (50).
7. The bistable permanent magnet retained electromagnetic repulsion operating mechanism of claim 6, wherein:
the first power supply module (51) is an adjustable power supply, the driving capacitor (52) is an adjustable capacitor, and the switching-on and switching-off action speed of the switch is adjusted by adjusting the voltage of the first power supply module (51) and the capacity of the driving capacitor (52).
8. The bistable permanent magnet retained electromagnetic repulsion operating mechanism of claim 6, wherein:
the first coil (11) is connected with the first controllable switch in series, and then the two ends of the first coil are respectively connected to the first output end and the second output end;
the second coil (21) is connected with the second controllable switch in series, and then two ends of the second coil are respectively connected to the first output end and the second output end.
9. A bistable permanent magnet held electromagnetic repulsion operating mechanism according to any one of claims 1 to 3, characterised in that:
The electromagnetic repulsion operating mechanism further comprises: a support assembly (40);
The support assembly (40) comprises a plurality of metal columns made of non-magnetic conductive materials, and the brake-opening static iron assembly (10) and the brake-closing static iron assembly (20) are fixed together, so that the relative positions are kept unchanged.
10. A switching-on/off operation method based on the bistable permanent magnet held electromagnetic repulsion operation mechanism according to any one of claims 1 to 9, characterized by comprising the steps of:
When the electromagnetic repulsion force operating mechanism held by the bistable permanent magnet is at the opening position, the driving assembly and the opening static iron yoke assembly (10) are attracted together through the ferromagnetic force generated by the permanent magnet (13);
When the electromagnetic repulsion force operating mechanism needs to be switched on, an external power supply (50) discharges the switching-off static iron early-on assembly (10), the switching-off static iron early-on assembly (10) generates a magnetic field, an induced vortex is generated on an adjacent driving assembly by the magnetic field, the direction of the induced magnetic field generated by the vortex is opposite to that of the switching-off static iron early-on assembly (10), electromagnetic repulsion force is generated on the driving assembly, and when the repulsion force is larger than the ferromagnetic attraction force, the driving assembly bounces off and moves towards the switching-on static iron assembly (20); when the driving component moves to the closing dead iron luer component (20), the driving component is attracted together by the closing dead iron luer component (20) through the ferromagnetic force generated by the permanent magnet;
When the electromagnetic repulsion operating mechanism is at a closing position, the driving assembly and the closing static iron luer assembly (20) are attracted together through ferromagnetic force generated by the permanent magnet;
When the operating mechanism needs to be operated by opening, an external power supply (50) discharges a closing static iron early component (20), the closing static iron early component (20) generates a magnetic field, an induced vortex is generated on an adjacent driving component by the magnetic field, the direction of the induced magnetic field generated by the vortex is opposite to that of the closing static iron early component (20), electromagnetic repulsion force is generated on the driving component, and when the repulsion force is larger than ferromagnetic attraction force, the driving component bounces off and moves towards the opening static iron component (10); when the driving component moves to the vicinity of the brake separating static iron luer component (10), the driving component is attracted together again by the brake separating static iron luer component (10) through the ferromagnetic force generated by the permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311855606.9A CN117894607A (en) | 2023-12-29 | 2023-12-29 | Electromagnetic repulsion mechanism for bistable permanent magnet retention and switching-on and switching-off operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311855606.9A CN117894607A (en) | 2023-12-29 | 2023-12-29 | Electromagnetic repulsion mechanism for bistable permanent magnet retention and switching-on and switching-off operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117894607A true CN117894607A (en) | 2024-04-16 |
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ID=90650039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311855606.9A Pending CN117894607A (en) | 2023-12-29 | 2023-12-29 | Electromagnetic repulsion mechanism for bistable permanent magnet retention and switching-on and switching-off operation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117894607A (en) |
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2023
- 2023-12-29 CN CN202311855606.9A patent/CN117894607A/en active Pending
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