CN206163407U - Quick mechanical switch moves device with behaviour - Google Patents
Quick mechanical switch moves device with behaviour Download PDFInfo
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- CN206163407U CN206163407U CN201621129681.2U CN201621129681U CN206163407U CN 206163407 U CN206163407 U CN 206163407U CN 201621129681 U CN201621129681 U CN 201621129681U CN 206163407 U CN206163407 U CN 206163407U
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- 230000007246 mechanism Effects 0.000 claims abstract description 70
- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 104
- 239000002184 metal Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 230000000903 blocking effect Effects 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000005389 magnetism Effects 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 abstract description 2
- 238000005191 phase separation Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a quick mechanical switch moves device with behaviour, the device includes: casing, transfer line, arrange electromagnetic drive mechanism and permanent magnetism driving mechanism in the casing in, wherein, wear to locate the casing transfer line slidable, the upper end of transfer line is provided with the movable contact, permanent magnetism driving mechanism is connected with the transfer line for actuation transmission pole upward movement so that movable contact and stationary contact contact, electromagnetic drive mechanism is connected with the transfer line for the downstream of actuation transmission pole is so that movable contact and stationary contact phase separation. The utility model discloses in, through setting up electromagnetic drive mechanism and permanent magnetism driving mechanism, can accelerate brake dividing -shutting speed greatly, shortened the time of divide -shut brake to, simple structure, easily operation.
Description
Technical Field
The utility model relates to the field of switch technology, particularly, relate to a quick operating device for mechanical switch.
Background
At present, the quick vacuum switch based on the electromagnetic repulsion mechanism has the advantages of simple structure, high opening and closing speed and small on-state loss, so the quick vacuum switch has wide application prospect in various fields such as power system fault current limiting, electric energy quality control, direct current circuit breakers, phase control switches and the like.
The existing fast vacuum switch of electromagnetic repulsion mechanism generally adopts a coil-metal disk type operating mechanism, as shown in fig. 1, the working principle is as follows: the capacitor discharges to the opening coil 1 'or the closing coil 2', so that the opening coil 1 'or the closing coil 2' generates pulse current, the pulse current forms a pulse magnetic field, the metal disc 3 'arranged between the opening coil 1' and the closing coil 2 'induces the pulse current to generate eddy current, the eddy current and the pulse current interact to generate electromagnetic repulsion, so that the opening coil 1' or the closing coil 2 'moves upwards or downwards, the insulating pull rod 4' is driven to move upwards or downwards, and the moving contact 5 'is contacted with or separated from the static contact 6', and the opening or closing is realized. However, the electromagnetic repulsion induced by the existing coil-metal disc type operating mechanism is attenuated quickly, so that the opening and closing speed is reduced, and the opening and closing time is prolonged.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an operating device for quick mechanical switch aims at solving the slow problem of divide-shut brake speed of coil-metal disc type operating mechanism among the prior art.
In one aspect, the utility model provides a quick operating device for mechanical switch, the device includes: the device comprises a shell, a transmission rod, an electromagnetic driving mechanism and a permanent magnet driving mechanism, wherein the electromagnetic driving mechanism and the permanent magnet driving mechanism are arranged in the shell; the transmission rod can be slidably arranged in the shell in a penetrating way; the upper end of the transmission rod is provided with a movable contact; the permanent magnet driving mechanism is connected with the transmission rod and used for driving the transmission rod to move upwards so as to enable the movable contact to be in contact with the fixed contact; the electromagnetic driving mechanism is connected with the transmission rod and used for driving the transmission rod to move downwards so as to separate the movable contact from the fixed contact.
Further, the operating device for a fast mechanical switch further includes: a metal separator; the metal partition plate is connected to the inner wall of the shell and used for dividing the shell into an upper cavity and a lower cavity; the electromagnetic driving mechanism is arranged in the upper cavity, and the permanent magnetic driving mechanism is arranged in the lower cavity.
Further, in the operating device for a fast mechanical switch, the permanent magnet driving mechanism includes: the permanent magnet motor comprises an iron core, an annular permanent magnet and a permanent magnet coil; wherein, the iron core is connected with the lower end of the transmission rod; the permanent magnet is connected to the inner wall of the shell, the permanent magnet coil is arranged above the permanent magnet, and the iron core is slidably arranged in the permanent magnet and the permanent magnet coil in a penetrating manner; the iron core, the metal partition plate and the permanent magnet coil form a first magnetic circuit, and the first magnetic circuit is used for driving the iron core to further drive the transmission rod to move upwards so as to enable the movable contact to be in contact with the static contact; the iron core, the metal partition plate and the permanent magnet form a second magnetic circuit, and the second magnetic circuit is used for applying a holding force to the iron core, wherein the holding force enables the movable contact and the fixed contact to be in a contact state.
Further, in the operating device for a fast mechanical switch, the permanent magnet driving mechanism further includes: a magnetic conductive ring; wherein, the magnetic conduction ring is sleeved between the iron core and the permanent magnet.
Furthermore, in the operating device for the rapid mechanical switch, a concave part is arranged on the inner wall of the shell, and the permanent magnet is embedded in the concave part; the upper edge of the magnetic conduction ring is outwards provided with an annular extending part, and the extending part is pressed between the end part of the permanent magnet and the inner wall of the concave part.
Further, in the operating device for a quick mechanical switch, the electromagnetic driving mechanism includes: a moving coil and a stationary coil; wherein, the moving coil is sleeved and connected with the transmission rod; the static coil is connected to the inner wall of the shell and is arranged above the movable coil, and the transmission rod can be slidably arranged on the static coil in a penetrating mode; the moving coil and the static coil are used for generating repulsive force which enables the transmission rod to move downwards after current is introduced so as to separate the moving contact from the static contact; the iron core, the bottom plate of the shell and the permanent magnet form a third magnetic circuit, and the third magnetic circuit is used for applying a holding force to the iron core, wherein the holding force enables the movable contact and the fixed contact to be in a separated state.
Further, the operating device for a fast mechanical switch further includes: a connecting rod, a blocking piece and an elastic component which are arranged below the shell; the connecting rod can be slidably arranged in the shell in a penetrating mode, and the upper end of the connecting rod is connected with the iron core; the blocking piece is connected with the connecting rod, and the elastic component is sleeved on the connecting rod and is arranged between the blocking piece and the shell.
Furthermore, in the operating device for the fast mechanical switch, the elastic component is a spring.
Further, the operating device for a fast mechanical switch further includes: a buffer; wherein, the buffer is connected with the lower end of the connecting rod.
The utility model discloses in, through setting up electromagnetic drive mechanism and permanent magnetism actuating mechanism, can accelerate divide-shut brake speed greatly, shortened the time of divide-shut brake, solved the slow problem of divide-shut brake speed of coil-metal disc type operating mechanism among the prior art to, simple structure, easily operation.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural view of a coil-metal disc type actuator in the prior art;
fig. 2 is a schematic structural diagram of a starting position of a switch-on of the operating device for a fast mechanical switch according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a middle position of a closing switch of the operating device for a fast mechanical switch according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating completion of closing of the operating device for a fast mechanical switch according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a starting position of the opening of the operating device for the fast mechanical switch according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of an intermediate position of the opening of the operating device for the fast mechanical switch according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram illustrating the completion of opening of the operating device for a fast mechanical switch according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 2 to 7, preferred structures of the operating device for a fast mechanical switch according to embodiments of the present invention are shown. As shown in the figure, the operation device is used for a mechanical switch, the mechanical switch is provided with a movable contact 10 and a fixed contact, when the movable contact 10 is contacted with the fixed contact, the mechanical switch is in a closing state, and when the movable contact 10 is separated from the fixed contact, the mechanical switch is in a opening state. An operating device is connected to the movable contact 10, and the operating device moves the movable contact 10 upward or downward (with respect to fig. 2) to make or separate the movable contact 10 and the stationary contact, thereby implementing closing and opening of the mechanical switch.
The operating device includes: the device comprises a shell 1, a transmission rod 2, an electromagnetic driving mechanism 3 and a permanent magnet driving mechanism 4. Wherein, the shell 1 is a pure iron shell, and the transmission rod 2 is a metal transmission rod. The transmission rod 2 penetrates through the shell 1, the transmission rod 2 is partially arranged in the shell 1, and the transmission rod 2 can slide up and down relative to the shell 1. The upper end of the transmission rod 2 (with respect to fig. 2) is placed outside the housing 1, and the upper end of the transmission rod 2 is provided with a movable contact 10, the movable contact 10 corresponding to the stationary contact of the mechanical switch. The lower end of the transmission rod 2 (with respect to fig. 2) is placed inside the housing 1.
The permanent magnet driving mechanism 4 and the electromagnetic driving mechanism 3 are both arranged in the shell 1, the permanent magnet driving mechanism 4 is connected with the transmission rod 2, and the permanent magnet driving mechanism 4 is used for generating a magnetic field to drive the transmission rod 2 to move upwards so that the movable contact 10 moves upwards and the movable contact 10 is contacted with the fixed contact when the power is on.
The electromagnetic driving mechanism 3 is connected with the transmission rod 2, and the electromagnetic driving mechanism 3 can be positioned above the permanent magnetic driving mechanism 4 or below the permanent magnetic driving mechanism 4. The electromagnetic driving mechanism 3 is used for driving the transmission rod 2 to move downwards through electromagnetic force generated between currents when the power is switched on so as to enable the movable contact 10 to move downwards and further enable the movable contact 10 to be separated from a fixed contact, specifically, the electromagnetic driving mechanism 3 can drive the transmission rod 2 to move downwards through electromagnetic repulsion between the currents, and can also drive the transmission rod 2 to move downwards through electromagnetic attraction between the currents.
During specific implementation, the permanent magnet driving mechanism 4 and the electromagnetic driving mechanism 3 can be electrically connected with the control device, when the switch is switched on, the control device drives the permanent magnet driving mechanism 4 to drive the transmission rod 2 to move upwards, and when the switch is switched off, the control device drives the electromagnetic driving mechanism 3 to drive the transmission rod 2 to move downwards.
The working principle of the embodiment is as follows: when the switch needs to be switched on, the permanent magnet driving mechanism 4 is electrified, the permanent magnet driving mechanism 4 generates a magnetic field after being electrified, the magnetic field drives the transmission rod 2 to move upwards, the movable contact 10 moves upwards, and the movable contact 10 is contacted with the fixed contact, so that the switch is switched on. When the brake is required to be opened, the electromagnetic driving mechanism 3 is electrified, and after the electromagnetic driving mechanism 3 is electrified, the driving rod 2 is driven by electromagnetic force between currents to move downwards so that the movable contact 10 moves downwards, and therefore the movable contact 10 is separated from the fixed contact, and the brake is opened.
It can be seen that, in the embodiment, by arranging the electromagnetic driving mechanism 3 and the permanent magnetic driving mechanism 4, the switching-on and switching-off speed can be greatly increased, the switching-on and switching-off time is shortened, the problem of low switching-on and switching-off speed of the coil-metal disc type operating mechanism in the prior art is solved, and the electromagnetic driving mechanism is simple in structure and easy to operate.
Referring to fig. 2, in the above embodiment, the operating device may further include: a metal separator 5. Wherein, metal baffle 5 is connected with the inner wall of casing 1, and metal baffle 5 divides into upper chamber 11 and lower chamber 12 in casing 1. Preferably, the shape of the metal partition 5 matches the shape of the housing 1, so that the upper cavity 11 and the lower cavity 12 are both closed spaces. The electromagnetic driving mechanism 3 is arranged in the upper cavity 11, and the permanent magnetic driving mechanism 4 is arranged in the lower cavity 12.
It can be seen that, in this embodiment, the electromagnetic driving mechanism 3 and the permanent magnetic driving mechanism 4 are separated by the metal partition plate, so that the magnetic field generated in the permanent magnetic driving mechanism 4 is enhanced, and the closing speed is increased.
Referring to fig. 2 to 4, in the above embodiment, the permanent magnet driving mechanism 4 includes: a core 41, an annular permanent magnet 42 and a permanent magnet coil 43. Wherein the iron core 41 is connected to the lower end (with respect to fig. 2) of the transmission rod 2. The permanent magnet 42 is connected with the inner wall of the shell 1, the permanent magnet coil 43 is arranged above the permanent magnet 42, and the iron core 41 is slidably arranged through the permanent magnet 42 and the permanent magnet coil 43. Specifically, the permanent magnet coil 43 may be connected to the inner wall of the housing 1, and the permanent magnet coil 43 is placed above the permanent magnet 42; alternatively, the permanent magnet coil 43 is placed on the permanent magnet 42. The iron core 41 is a cylindrical body, a through hole is arranged at the center of the permanent magnet coil 43, the iron core 41 is arranged through the through holes of the annular permanent magnet 42 and the annular permanent magnet coil 43, and the iron core 41 can slide up and down (relative to fig. 2) relative to the permanent magnet 42 and the permanent magnet coil 43, that is, the permanent magnet 42 and the permanent magnet coil 43 are fixed, and the iron core 41 can slide up and down.
In specific implementation, a first end (an upper end shown in fig. 2) of the iron core 41 is connected to a lower end of the transmission rod, a second end (a lower end shown in fig. 2) of the iron core 41 is provided with a blocking member, the blocking member is a circular blocking member made of iron, and a diameter of the blocking member is larger than a diameter of the iron core 41. After the plunger 41 moves upward to make the movable contact 10 contact with the stationary contact, the blocking member just contacts with the lower end of the permanent magnet 42, i.e., the permanent magnet 42 blocks the plunger 41 from further moving upward.
The iron core 41, the metal partition plate 5 and the permanent magnet coil 43 form a first magnetic circuit, and the first magnetic circuit is used for driving the iron core 41 to move upwards so as to drive the transmission rod 2 to move upwards, so that the movable contact 10 is in contact with the stationary contact. Specifically, the permanent magnet coil 43 may be electrically connected to a first capacitor, the first capacitor being electrically connected to a control device, the control device controlling the first capacitor to discharge electricity to the permanent magnet coil 43, the permanent magnet coil 43 forming a first magnetic circuit with the iron core 41 and the housing 1 after being energized. The current discharged from the first capacitor to the permanent magnet coil 43 is a pulse current.
The iron core 41, the metal diaphragm 5 and the permanent magnet 42 form a second magnetic circuit for applying a holding force to the iron core 41, which keeps the movable contact 10 in contact with the stationary contact at all times.
The working principle of the embodiment is as follows: when closing, the movable contact 10 is separated from the stationary contact, and the iron core 41 is located on the bottom plate of the housing 1. The control means sends a discharge signal to the first capacitor, which receives the discharge signal and discharges the permanent magnet coil 43. The permanent magnet coil 43 forms a first magnetic path with the iron core 41 and the metal separator 5 after being energized, and the first magnetic path generates an upward force on the iron core 41. Since the permanent magnet 42 has a magnetic force, the permanent magnet 42, the metal partition 5 and the iron core 41 form a second magnetic path, the second magnetic path generates an upward acting force on the iron core 41, and meanwhile, the permanent magnet 42, the bottom plate of the casing 1 and the iron core 41 form a third magnetic path, and the third magnetic path generates a downward acting force on the iron core 41. Since the pulse current of the permanent magnet coil is initially strong, the upward acting force of the first magnetic circuit on the iron core 41 is large, the upward acting force of the second magnetic circuit on the iron core 41 is combined with the downward acting force of the third magnetic circuit on the iron core 41, so that the iron core 41 moves upward, and since the iron core 41 is connected with the transmission rod 2, the transmission rod 2 moves upward, and the movable contact 10 moves upward. Since the current received by the permanent magnet coil 43 is a pulse current, the pulse current gradually disappears, the upward acting force on the iron core 41 gradually decreases, so that the iron core 41 slowly moves upward, and finally the movable contact 10 is contacted with the stationary contact.
When the moving contact 10 contacts with the stationary contact, the pulse current in the permanent magnet coil disappears, and the first magnetic circuit correspondingly disappears. At this time, the distance between the iron core 41 and the metal partition 5 is short, the gap is small, and the distance from the bottom plate of the housing 1 is long, the gap is large, the upward acting force of the second magnetic circuit on the iron core 41 is larger than the downward acting force of the third magnetic circuit on the iron core 41, so that the iron core 41 is subjected to the upward acting force. Since the movable contact 10 is in contact with the stationary contact, the driving lever 2 cannot move upward, and the driving lever 2 and the iron core 41 maintain the existing state, that is, the movable contact 10 is in contact with the stationary contact.
In the embodiment, the permanent magnet coil 43, the iron core 41 and the metal partition plate 5 form a first magnetic circuit, and the first magnetic circuit drives the iron core 41 to drive the transmission rod 2 to move upwards, so that the transmission rod 2 moves faster, and the closing speed is greatly increased; the iron core 41, the metal partition 5 and the permanent magnet 42 form a second magnetic circuit, and the second magnetic circuit enables the movable contact 10 and the fixed contact to be always in a contact state, so that smooth closing is ensured.
Referring to fig. 2, in the above embodiment, the permanent magnet driving mechanism 4 may further include: a magnetically permeable ring 44. Wherein, the magnetic ring 44 is sleeved between the iron core 41 and the permanent magnet 42. Specifically, the magnetic ring 44 is an annular body, the magnetic ring 44 is sleeved in the annular permanent magnet 42, and the magnetic ring 44 is connected to the permanent magnet 42. The iron core 41 is disposed through the magnetic conductive ring 44, and the iron core 41 can slide up and down relative to the magnetic conductive ring 44.
It can be seen that, in this embodiment, by providing the magnetic conductive ring 44, the magnetic field generated by the permanent magnet 42 is enhanced, so that the acting force generated by the second magnetic circuit on the iron core 41 is stronger and more uniform, and the magnetic conductive ring 44 also plays a role in resisting interference.
Referring to fig. 2, in the above embodiment, the inner wall of the casing 1 is provided with a recessed portion, and the permanent magnet 42 is embedded in the recessed portion. Specifically, the recessed portion may be a groove, a groove is provided on the inner wall of the housing 1 corresponding to the permanent magnet 42, and the permanent magnet 42 is embedded in the groove and is engaged with the groove.
An extending portion 441 extends outwards (towards the inner wall of the casing 1 as shown in fig. 1) from the upper edge of the magnetic ring 44, and the extending portion 441 is an annular extending body. The extension 441 is pressed between the upper end of the permanent magnet 42 and the inner wall of the recess. Specifically, a gap is formed between the upper end of the permanent magnet 42 and the sidewall above the groove, and the extending portion 441 is inserted into the gap, so that both the permanent magnet 42 and the magnetic ring 44 are connected to the casing 1.
It can be seen that, in this embodiment, the permanent magnet 42 is connected with the housing 1 in a snap-fit manner, which is convenient for the permanent magnet 42 to be disassembled and assembled, and the magnetic ring 44 is connected with the housing 1 through the permanent magnet 42, which is convenient for the magnetic ring 44 to be fixed, and has a simple structure.
Referring to fig. 5 to 7, in the above embodiments, the electromagnetic driving mechanism 3 may include: a moving coil 31 and a stationary coil 32. Wherein, the moving coil 31 is sleeved outside the transmission rod 2, and the moving coil 31 is connected with the transmission rod 2, so that the moving coil 31 moves up or down along with the transmission rod 2.
The stationary coil 32 is connected to the inner wall of the housing 1, and the stationary coil 32 is held in a stationary state with respect to the housing 1. The stationary coil 32 is disposed opposite to the moving coil 31, the stationary coil 32 is disposed above the moving coil 31, and a predetermined distance is provided between the stationary coil 32 and the moving coil 31. In specific implementation, the preset distance may be determined according to an actual situation, which is not limited in this embodiment, but this embodiment shows a preferred scheme: the distance between the movable contact 10 and the stationary contact is equal to the distance between the stationary coil 32 and the movable coil 31, and when the movable contact 10 is in contact with the stationary contact, the movable coil 31 is also in contact with the stationary coil 32.
The driving rod 2 is slidably inserted through the stationary coil 32, that is, a through hole is provided in the center of the stationary coil 2, the driving rod 2 is inserted through the through hole of the stationary coil 32, and the driving rod 2 is slidable up and down (with respect to fig. 5) with respect to the stationary coil 32. Specifically, a certain gap is formed between the through hole of the stationary coil 32 and the transmission rod 2, that is, the stationary coil 32 and the transmission rod 2 are not in contact with each other, so that the transmission rod 2 can slidably penetrate through the stationary coil 32.
The moving coil 31 and the stationary coil 32 are electrically connected, and when a current is applied thereto, an electromagnetic repulsive force for moving the transmission lever 2 downward or an electromagnetic attractive force for moving the transmission lever 2 downward is generated to separate the moving contact 10 from the stationary contact. In the present embodiment, the description is given taking as an example the case where an electromagnetic repulsive force for moving the transmission lever 2 downward is generated. Specifically, the winding directions of the moving coil 31 and the stationary coil 32 are opposite, the moving coil 31 and the stationary coil 32 are connected in series and can be electrically connected with a second capacitor after being connected in series, the second capacitor is electrically connected with a control device, the control device controls the second capacitor to discharge electricity to the moving coil 31 and the stationary coil 32, and the current directions in the moving coil 31 and the stationary coil 32 are opposite due to the opposite winding directions of the moving coil 31 and the stationary coil 32, so that an electromagnetic repulsion force is generated. The current discharged from the second capacitor to the moving coil 31 and the stationary coil 32 is a pulse current.
The iron core 41, the bottom plate of the case 1, and the permanent magnet 42 form a third magnetic circuit for applying a holding force to the iron core 41, which causes the movable contact 10 to be in a separated state from the stationary contact.
The working principle of the embodiment is as follows: when the brake is opened, the control device sends a discharge signal to the second capacitor, and the second capacitor receives the discharge signal and discharges the movable coil 31 and the static coil 32. When a current is applied to the moving coil 31 and the stationary coil 32, the directions of the currents in the moving coil 31 and the stationary coil 32 are opposite to each other, and therefore, an electromagnetic repulsive force is generated between the moving coil 31 and the stationary coil 32. Since the stationary coil 32 is connected to the housing 1, that is, the stationary coil 32 is fixed relative to the housing 1, the electromagnetic repulsive force applies a downward force to the moving coil 31. Since the driving rod 2 is connected to the moving coil 31, the electromagnetic repulsion applies a downward acting force to the driving rod 2, and since the driving rod 2 is connected to the iron core 41, the electromagnetic repulsion applies a downward acting force to the iron core 41, and the downward acting force of the electromagnetic repulsion combined with the third magnetic circuit to the iron core 41 is greater than the upward acting force of the second magnetic circuit to the iron core 41, so that the moving contact 10 and the stationary contact cannot be kept in a contact state, the driving rod 2 is driven to move downward, the moving contact 10 is driven to move downward, and the moving contact 10 is separated from the stationary contact. Wherein, the transmission rod 2 moves downwards to drive the iron core 41 to move downwards, and finally the iron core 41 is positioned on the bottom plate of the shell 1.
When the moving contact 10 is separated from the stationary contact, the electromagnetic repulsion disappears correspondingly due to the pulse current messages in the moving coil 31 and the stationary coil 32. At this time, the iron core 41 is located at the bottom plate of the housing 1, the gap between the iron core 41 and the bottom plate of the housing 1 is small, the distance between the iron core 41 and the metal partition plate 5 is long, and the gap is large, so that the downward acting force of the third magnetic circuit on the iron core 41 is greater than the upward acting force of the second magnetic circuit on the iron core 41, so that the iron core 41 is subjected to the downward acting force, and since the iron core 41 is located at the bottom plate of the housing 1, the iron core 41 cannot move downward, that is, the iron core 41 and the transmission rod 2 maintain the existing state, that is, the movable contact 10 and the stationary contact.
It can be seen that in the present embodiment, the driving rod 2 is driven to move downwards by the electromagnetic repulsion generated by the moving coil 31 and the static coil 32, which greatly shortens the opening time, and has simple structure and easy operation.
Referring to fig. 2, in the above embodiments, the operating device may further include: a link 6, a catch 7 and an elastic member 8, which are disposed below the housing 1 (with respect to fig. 2). Wherein, the connecting rod 6 is slidably arranged on the bottom plate of the shell 1, and the connecting rod 6 is partially arranged in the shell 1. The upper end (with respect to fig. 2) of the link 6 is disposed inside the housing 1, the lower end (with respect to fig. 2) of the link 6 is disposed outside the housing 1, and the upper end of the link 6 is connected with the iron core 41 so that the link 6 can follow the iron core 41 to move up or down.
The latch 7 and the elastic member 8 are disposed below the housing 1, and a portion of the link 6 disposed outside the housing 1 is connected to the latch 7. The elastic component 8 is sleeved outside the connecting rod 6, the elastic component 8 is arranged between the blocking piece 7 and the shell 1, specifically, the blocking piece 7 can be a nut, a thread is arranged on the connecting rod 6, the blocking piece 7 is in threaded connection with the part of the connecting rod 6, which is arranged outside the shell 1, and a preset distance is reserved between the blocking piece 7 and the shell 1. The elastic member 8 may be a spring, and the elastic member 8 is disposed at a gap between the stopper 7 and the housing 1. In particular embodiments, the predetermined distance may be equal to the length of the resilient member 8 in its natural state.
Referring to fig. 2 to 7, the working principle of the present embodiment is: when the switch is closed, the permanent magnet driving mechanism 4 drives the iron core 41 to move upwards, and the iron core 41 is connected with the connecting rod 6, so that the iron core 41 moves upwards to drive the connecting rod 6 to move upwards, and the elastic component 8 compresses under the blocking action of the blocking piece 7. At this time, the elastic member 8 actually generates a downward acting force on the iron core 41, however, the upward acting force of the first magnetic circuit on the iron core 41 in combination with the upward acting force of the second magnetic circuit on the iron core 41 is greater than the sum of the downward acting force of the third magnetic circuit on the iron core 41 and the downward acting force of the elastic member 8 on the iron core 41, so that the iron core 41 moves upward, and further the driving rod 2 is driven to move upward, so that the movable contact 10 moves upward, and the movable contact 10 is contacted with the stationary contact. When the movable contact 10 is in contact with the stationary contact, the upward acting force of the second magnetic circuit on the iron core 41 is greater than the sum of the downward acting force of the third magnetic circuit on the iron core 41 and the downward acting force generated by the elastic component 8 on the iron core 41, so that the iron core 41 is subjected to the upward acting force, and the driving rod 2 and the iron core 41 are both maintained in the existing state, that is, the movable contact 10 is kept in contact with the stationary contact.
When the brake is opened, the electromagnetic repulsion generated by the moving coil 31 and the static coil 32 after the current is introduced drives the transmission rod 2 to move downwards, so as to drive the iron core 41 to move downwards, further drive the connecting rod 6 to move downwards, and enable the elastic component 8 to be restored to the natural state from the compressed state. In the process of restoring the elastic component 8, a downward acting force is generated on the iron core 41, and then the downward acting force generated by combining the electromagnetic repulsion and the downward acting force of the third magnetic circuit on the iron core 41 are combined, the sum of the three downward acting forces is greater than the upward acting force of the second magnetic circuit on the iron core 41, the downward acting force drives the transmission rod 2 to move downwards, so that the movable contact 10 moves downwards, and the movable contact 10 is separated from the fixed contact. Eventually, the elastic member 8 is restored to the natural state.
It can be seen that, in this embodiment, the elastic component 8 is compressed when switching on, and recovers to a natural state when switching off, so as to provide a power for switching off, and shorten the switching off time.
Referring to fig. 2, in the above embodiments, the operating device may further include: a buffer 9. The buffer 9 is connected with the lower end of the connecting rod 6, and the buffer 9 is used for buffering the transmission rod 2, the iron core 41 and the connecting rod 6 in the switching-on and switching-off processes, so that the violent switching-on and switching-off motions are avoided.
In conclusion, the electromagnetic driving mechanism 3 and the permanent magnetic driving mechanism 4 are arranged in the embodiment, so that the opening and closing speed can be greatly increased, the opening and closing time is shortened, and the electromagnetic driving mechanism is simple in structure and easy to operate.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. An operating device for a fast mechanical switch, comprising: the device comprises a shell (1), a transmission rod (2), an electromagnetic driving mechanism (3) and a permanent magnetic driving mechanism (4), wherein the electromagnetic driving mechanism and the permanent magnetic driving mechanism are arranged in the shell (1); wherein,
the transmission rod (2) is slidably arranged in the shell (1) in a penetrating way; the upper end of the transmission rod (2) is provided with a movable contact (10);
the permanent magnet driving mechanism (4) is connected with the transmission rod (2) and is used for driving the transmission rod (2) to move upwards so as to enable the movable contact (10) to be in contact with the fixed contact;
the electromagnetic driving mechanism (3) is connected with the transmission rod (2) and is used for driving the transmission rod (2) to move downwards so as to separate the movable contact (10) from the fixed contact.
2. The actuator for a fast mechanical switch according to claim 1, further comprising: a metal separator (5); wherein,
the metal partition plate (5) is connected to the inner wall of the shell (1) and is used for dividing the interior of the shell (1) into an upper cavity (11) and a lower cavity (12);
the electromagnetic driving mechanism (3) is arranged in the upper cavity (11), and the permanent magnetic driving mechanism (4) is arranged in the lower cavity (12).
3. The actuator for quick mechanical switch according to claim 2, characterized in that said permanent magnet driving means (4) comprise: an iron core (41), an annular permanent magnet (42) and a permanent magnet coil (43); wherein,
the iron core (41) is connected with the lower end of the transmission rod (2);
the permanent magnet (42) is connected to the inner wall of the shell (1), the permanent magnet coil (43) is arranged above the permanent magnet (42), and the iron core (41) is slidably arranged in the permanent magnet (42) and the permanent magnet coil (43) in a penetrating manner;
the iron core (41), the metal partition plate (5) and the permanent magnet coil (43) form a first magnetic circuit, and the first magnetic circuit is used for driving the iron core (41) to further drive the transmission rod (2) to move upwards so that the movable contact (10) is contacted with the fixed contact;
the iron core (41), the metal spacer (5), and the permanent magnet (42) form a second magnetic circuit for applying a holding force to the iron core (41) to bring the movable contact (10) into contact with the stationary contact.
4. The actuator for quick mechanical switch according to claim 3, characterized in that said permanent magnet driving means (4) further comprises: a magnetically conductive ring (44); wherein,
the magnetic conduction ring (44) is sleeved between the iron core (41) and the permanent magnet (42).
5. The actuator for a quick mechanical switch according to claim 4,
the inner wall of the shell (1) is provided with a concave part, and the permanent magnet (42) is embedded in the concave part;
an annular extending part (441) is arranged on the upper edge of the magnetic conduction ring (44) in an outward extending mode, and the extending part (441) is pressed between the end part of the permanent magnet (42) and the inner wall of the concave part.
6. The operating device for a fast mechanical switch according to claim 3, characterized in that said electromagnetic actuating mechanism (3) comprises: a moving coil (31) and a stationary coil (32); wherein,
the moving coil (31) is sleeved and connected with the transmission rod (2);
the static coil (32) is connected to the inner wall of the shell (1) and is arranged above the movable coil (31), and the transmission rod (2) is slidably arranged in the static coil (32) in a penetrating manner;
the moving coil (31) and the static coil (32) are used for generating repulsive force for enabling the transmission rod (2) to move downwards after current is introduced so as to enable the moving contact (10) to be separated from the static contact;
the iron core (41), the bottom plate of the housing (1), and the permanent magnet (42) form a third magnetic circuit for applying a holding force to the iron core (41) to place the movable contact (10) and the stationary contact in a separated state.
7. The actuator for a fast mechanical switch according to claim 3, further comprising: a connecting rod (6), a blocking piece (7) and an elastic component (8) which are arranged below the shell (1); the connecting rod (6) is slidably arranged in the shell (1) in a penetrating manner, and the upper end of the connecting rod (6) is connected with the iron core (41);
the blocking piece (7) is connected with the connecting rod (6), and the elastic component (8) is sleeved on the connecting rod (6) and is arranged between the blocking piece (7) and the shell (1).
8. The actuator for quick mechanical switch according to claim 7, characterized in that said elastic means (8) is a spring.
9. The actuator for a fast mechanical switch according to claim 7, further comprising: a buffer (9); wherein,
the buffer (9) is connected with the lower end of the connecting rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129681.2U CN206163407U (en) | 2016-10-17 | 2016-10-17 | Quick mechanical switch moves device with behaviour |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129681.2U CN206163407U (en) | 2016-10-17 | 2016-10-17 | Quick mechanical switch moves device with behaviour |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206163407U true CN206163407U (en) | 2017-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621129681.2U Active CN206163407U (en) | 2016-10-17 | 2016-10-17 | Quick mechanical switch moves device with behaviour |
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| Country | Link |
|---|---|
| CN (1) | CN206163407U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373826A (en) * | 2016-10-17 | 2017-02-01 | 中国电力科学研究院 | Operating device for rapid mechanical switch |
| CN112017919A (en) * | 2020-10-26 | 2020-12-01 | 广东电网有限责任公司 | External mechanical manual brake separating device |
| CN113764225A (en) * | 2021-08-24 | 2021-12-07 | 西安交通大学 | Vacuum switch device with electromagnetic repulsion disc arranged inside vacuum arc extinguish chamber |
-
2016
- 2016-10-17 CN CN201621129681.2U patent/CN206163407U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373826A (en) * | 2016-10-17 | 2017-02-01 | 中国电力科学研究院 | Operating device for rapid mechanical switch |
| CN112017919A (en) * | 2020-10-26 | 2020-12-01 | 广东电网有限责任公司 | External mechanical manual brake separating device |
| CN112017919B (en) * | 2020-10-26 | 2021-01-12 | 广东电网有限责任公司 | External mechanical manual brake separating device |
| CN113764225A (en) * | 2021-08-24 | 2021-12-07 | 西安交通大学 | Vacuum switch device with electromagnetic repulsion disc arranged inside vacuum arc extinguish chamber |
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