CN112701013B - Switching device - Google Patents
Switching device Download PDFInfo
- Publication number
- CN112701013B CN112701013B CN201911012201.2A CN201911012201A CN112701013B CN 112701013 B CN112701013 B CN 112701013B CN 201911012201 A CN201911012201 A CN 201911012201A CN 112701013 B CN112701013 B CN 112701013B
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- Prior art keywords
- operating mechanism
- switching device
- contact system
- trip
- handle
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- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 238000004891 communication Methods 0.000 claims description 21
- 230000009467 reduction Effects 0.000 claims description 10
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 description 10
- 238000005452 bending Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
- H01H71/43—Electrodynamic release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
Abstract
The invention discloses a switching device, which comprises an insulating shell, wherein a first operating mechanism, a second operating mechanism, a first contact system, a second contact system and an electric operating mechanism are arranged in the insulating shell, and the switching device further comprises a first tripping rod and a second tripping rod, wherein the first tripping rod can be respectively contacted with or separated from the first contact system or the second operating mechanism, and the second tripping rod can be respectively contacted with or separated from the second operating mechanism or the electric operating mechanism. When the arrears need to be automatically opened, the second contact system is only required to be opened, and correspondingly, compared with the situation that two contact systems are required to be opened simultaneously, the driving force required by the motor can be correspondingly reduced, so that the volume and occupied space of the motor can be reduced; if motors with the same specification are adopted, the motor of the scheme has better stability and more reliable driving under the same driving force.
Description
Technical Field
The invention relates to the field of piezoelectric devices, in particular to a switching device.
Background
In the prior art, when a user has arrearage, a background of a power supply system can send a power-off instruction, the power-off instruction is received by the power-off switch, then an electric operating mechanism arranged in the power-off switch drives an L pole and an N pole to break the brake and break the power, after electric charge payment is completed, the electric operating mechanism drives the L pole and the N pole to close the brake and continuously supply power, namely, the electric operating mechanism needs to drive two contact systems of the L pole and the N pole to realize automatic breaking and closing, the structure is relatively complex, the driving force of a motor is correspondingly larger, and in addition, when overload, short circuit or electric leakage exists, the two contact systems of the L pole and the N pole break the brake simultaneously, so that maintenance personnel are not facilitated to judge which situation causes the breaking brake.
Disclosure of Invention
Based on the above background, an object of the present invention is to provide a switching device, which only realizes that the L pole is open and the N pole is still closed in some specific situations, so as to effectively overcome the above problems.
The technical scheme of the invention is as follows:
the switch device comprises an insulating shell, wherein a first operating mechanism, a second operating mechanism, a first contact system, a second contact system and an electric operating mechanism are arranged in the insulating shell, the switch device further comprises a first tripping rod and a second tripping rod, the first tripping rod can be respectively contacted with or separated from the first contact system or the second operating mechanism, and the second tripping rod can be respectively contacted with or separated from the second operating mechanism or the electric operating mechanism.
Preferably, the first trip bar and the second trip bar are coaxially arranged and can rotate freely relative to the rotating shaft respectively.
Preferably, the second operating mechanism includes a third trip bar, and the third trip bar may be disposed coaxially or non-coaxially with the first trip bar or the second trip bar.
Preferably, a pushing rod is fixedly arranged on the third tripping rod, and the first tripping rod or the second tripping rod can be contacted with or separated from the pushing rod.
Preferably, a second open slot matched with the pushing rod is arranged on the first tripping rod.
Preferably, a pushing part matched with the pushing rod is arranged on the second tripping rod.
Preferably, the electric operating mechanism comprises a motor and a reduction gear set, and the reduction gear set comprises a lug matched with the second tripping rod.
Preferably, the first operating mechanism comprises a first handle, the second operating mechanism comprises a second handle, and the first handle and the second handle can be contacted or separated.
Preferably, the second handle comprises a toothed structure.
Preferably, the reduction gear set includes a toothed structure that mates with a toothed structure of the second handle.
Preferably, the switching device is of the 1p+n or 2P type.
Preferably, the switching device further comprises a tripping device, and the tripping device at least comprises a shunt tripping device.
Preferably, the switching device further comprises an electronic controller comprising a wireless communication device or a wired communication device.
Preferably, the communication mode of the wired communication device comprises RS485, RS232, RS422, etherNet, CAN, deviceNet or Profibus, and the communication mode of the wireless communication device comprises Wifi, bluetooth, zigBee, NFC, GRPS, 20NB-IoT or LoRa.
The beneficial effects of the invention are as follows:
1. when the arrears need to be automatically opened, the second contact system is only required to be opened, and correspondingly, compared with the situation that two contact systems are required to be opened simultaneously, the driving force required by the motor can be correspondingly reduced, so that the volume and occupied space of the motor can be reduced; if motors with the same specification are adopted, the motor of the scheme has better stability and more reliable driving under the same driving force.
2. When overload, short circuit and other conditions exist, only the opening of the second contact system 500 is realized, the first contact system 400 is in a closing state, and when residual current exists, the first contact system 400 and the second contact system 500 are both opened in order to ensure personal safety of a user, so that the switch device has a leakage indication function, and when the user or a maintainer sees that the first contact system 400 and the second contact system 500 are both in the opening state, the user or the maintainer can know that the opening is caused by the existence of the residual current, and the manual closing is not easy before the fault elimination, thereby ensuring the personal safety.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding the understanding of the present application, and are not particularly limited. Those skilled in the art who have the benefit of the teachings of this application may select various possible shapes and scale dimensions to practice this application as the case may be. In the drawings:
fig. 1 is a schematic diagram of the overall structure of the switching device of the present invention.
Fig. 2 is a schematic view of the internal structure of the switching device of the present invention.
Fig. 3 is a schematic view of another angular internal structure of the switching device of the present invention.
Fig. 4 is a schematic view of the structure of the first handle and the second handle of the switching device of the present invention.
Fig. 5 is a schematic view of the first operating mechanism, the second operating mechanism, the electrically operated structure, the first contact system and the second contact system of the switching device of the present invention.
Fig. 6 is a schematic structural view of a first trip bar, a second trip bar, and a third trip bar of the switching device of the present invention.
Fig. 7 is another angular structural schematic diagram of the first trip bar of the switching device of the present invention.
Fig. 8 is a schematic structural diagram of a state of cooperation of a driven gear set, a first trip bar and a second trip bar of the switching device.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Referring to fig. 1 to 3, the present embodiment discloses a switching device, which includes an insulating housing 100, and a first operating mechanism 200, a second operating mechanism 300, a first contact system 400, a second contact system 500, and an electric operating mechanism 600 are disposed in the insulating housing 100, where the first operating mechanism 200 can drive the first contact system 400 to be closed or opened, and the second operating mechanism 300 and the electric operating mechanism 600 can drive the second contact system 500 to be closed or opened.
Specifically, referring to fig. 2, 4 and 5, the first operating mechanism 200 includes a first handle 210, a first lock catch 220 and a first elastic member 230, the first handle 210 can rotate around a fixed shaft 211, the first handle 210 includes a first holding portion 212 and a first rotating portion 213, and a lug 214 is disposed on the first holding portion 212. The first lock 220 is rotatably connected to the first handle 210, one end of the first lock 220 is clamped into a first opening slot 411 on the first moving contact 410 of the first contact system 400, and when the first handle 210 rotates, the first lock 220 can drive the first moving contact 410 to rotate under the driving of the first handle 210. One end of the first elastic member 230 is fixed to the insulating housing 100, the other end is fixed to the latch 220, and when the first latch 220 is disengaged from the first opening 411, the first elastic member 230 provides a restoring force for the first latch 220.
The first contact system 400 includes a first moving contact 410 and a first fixed contact 420, a first opening slot 411 capable of accommodating the first lock catch 220 passing through is provided on the first moving contact 410, the first moving contact 410 can rotate around a rotation shaft 412 and can contact with or separate from the first fixed contact 420, so as to realize the closing or opening of the first contact system 400, and a protruding columnar structure 413 is provided on the first moving contact 410. The first contact system 400 further includes a second elastic member 430, where one end of the second elastic member 430 is fixed to the insulating housing 100, and the other end of the second elastic member is connected to the first moving contact 410, and the second elastic member 430 provides, on one hand, contact pressure when the first moving contact 410 contacts the first fixed contact 420, and on the other hand, provides a restoring force for the first moving contact 410 after the first moving contact 410 and the first fixed contact 420 are separated.
Referring to fig. 3 to 7, the second operating mechanism 300 includes a second handle 310, a second lock catch 320, and a third elastic member 330, where the second handle 310 and the first handle 210 are coaxially disposed, the second handle 310 includes a second handheld portion 311 and a second rotating portion 312, the second handheld portion 311 is overlapped with the lug 214 on the first handheld portion 212 of the first handle 210, and when the first handle 210 is manually pushed to be opened, the second handle 310 can be synchronously driven to move in the opening direction; similarly, when the second handle 310 is manually pushed to switch on, the second handle 310 can synchronously drive the first handle 210 to move in the switching-on direction; conversely, when the first handle 210 is manually pushed to close, the second handle 310 cannot be synchronously driven to move in the closing direction, and when the second handle 310 is manually pushed to open, the first handle 210 cannot be synchronously driven to move in the opening direction, so that the first contact system 400 is closed no later than the second contact system 500 and no earlier than the second contact system 500 is opened, and electrical safety is further ensured. The second handle 310 further includes a toothed structure 313.
The second lock 320 is rotatably connected with the second handle 310, and the second lock 320 is connected with the second contact system 500 through a bending shaft 321, the second lock 320 is provided with a hook structure, the hook structure is matched with the bending shaft 321, the bending shaft 321 can pass through the hook structure or separate from the hook structure, and a via hole through which the bending shaft 321 can pass is formed in the second movable contact 510 of the second contact system 500. When the second hand
When the handle 310 rotates, the second lock 320 can pass through the second handle 310
The bending shaft 321 drives the second movable contact 510 to rotate, thereby realizing the second contact system
500. One end of the third elastic member 330 is fixed to the insulating housing 100, and the other end is connected to the second latch 320, so as to provide a restoring force to the second latch 320.
The second operating mechanism 300 further includes a first trip bar 340, a second trip bar 350, and a third trip bar 360, where the first trip bar 340, the second trip bar 350, and the third trip bar 360 may be respectively rotatably connected to the insulating housing 100 through a rotation shaft, and the rotation of the first trip bar 340 and the second trip bar 350 around their corresponding rotation shafts is independent of each other, and the rotation of one trip bar does not drive the rotation of the other trip bar.
Specifically, in this embodiment, the first trip lever 340 and the second trip lever 350 are coaxially disposed along the rotation axis 370 in sequence, the third trip lever 360 is rotatably disposed around the rotation axis 361 and the insulating housing, the first trip lever 340 contacts with the protruding columnar structure 412 on the first moving contact 410, and when the first moving contact 410 is driven by the first operating mechanism 200 to rotate in the opening direction, the first trip lever 340 is driven by the columnar structure 412 to rotate around the corresponding rotation axis, and the first trip lever 340 is provided with the second open slot 341.
The second trip bar 350 is in contact with the electric operating mechanism 600, the second trip bar 350 can rotate around a corresponding rotation shaft under the driving of the electric operating mechanism 600, and a pushing portion 351 is provided on the second trip bar 350.
The third trip lever 360 is rotatably connected to the insulating housing 100 through the rotation shaft 361 and is rotatably connected to the second movable contact 510 of the second contact system 500 through a connection shaft 362, a push rod 363 is provided on the third trip lever 360, the push rod 363 is capable of extending into the open slot 341 and contacting a side opposite to the opening of the open slot 341, and the push rod 363 is capable of contacting the push part 351. When the first trip bar 340 rotates under the pushing of the columnar structure 412 of the first moving contact 410 or when the second trip bar 350 rotates under the pushing of the electric operating mechanism 600, the third trip bar 360 may rotate around the rotation shaft 361 under the pushing of the pushing bar 363 by the pushing portion 351 of the first trip bar 340 or the second trip bar 350, so that the second moving contact 510 is driven to rotate by the connection shaft 362, thereby achieving the closing or opening of the second contact system 500. The third trip bar 360 may be disposed coaxially with the first trip bar 340 and the second trip bar 350, or may be disposed not coaxially.
The second contact system 500 includes a second moving contact 510, a second fixed contact 520, and a fourth elastic member 530, where the second moving contact 510 is rotationally connected with the insulating housing 100, and one end of the fourth elastic member 530 is fixedly connected with the insulating housing 100, and the other end is connected with the second moving contact 510, so as to provide a restoring force for the second moving contact 510.
The electric operating mechanism 600 includes a motor 610 and a reduction gear assembly 620, the motor 610 may drive the reduction gear assembly 620 to rotate, the reduction gear assembly 620 includes a driven gear set 621, the driven gear set 621 is provided with an incomplete tooth structure 622 and a protruding block 623, the incomplete tooth structure 622 may be meshed with the tooth structure 313 on the second handle 310, and the protruding block 623 may contact the second trip bar 350 and may push the second trip bar 350 to rotate. It should be noted that, the engagement of the incomplete tooth 622 and the tooth 313 on the second handle 310 is different from the contact of the bump 623 and the second trip bar 350, that is: when the incomplete tooth 622 and the tooth 313 on the second handle 310 are engaged, the bump 623 and the second trip bar 350 are not yet in contact, when the bump 623 and the second trip bar 350 are in contact, the incomplete tooth 622 and the tooth 313 on the second handle 310 are in an unengaged state, so that the automatic switching-on action of the second contact system 500 is realized by the engagement of the incomplete tooth 622 and the tooth 313 on the second handle 310, the automatic switching-off action is realized by the pushing of the bump 623 and the second trip bar 350, the automatic switching-off action of the second contact system 500 is realized by the engagement of the incomplete tooth 622 and the tooth 313 on the second handle 310, the arrangement is such that the tooth 313 on the second handle 310 needs to be cancelled, the manual switching-on action is realized by the simple engagement of the incomplete tooth 622 and the tooth 313 on the second handle 310, and the manual switching-off action is realized by the simple design of the manual switching-off action of the tooth 313 when the required switching-off action of the motor needs to be cancelled.
In a preferred embodiment, the switching device further includes a trip device 700, an electronic controller 800, and a current collector 900, the trip device 700 may include a shunt release 710 and an overcurrent protection release 720, corresponding to the shunt release 710, the first operating mechanism 200 further includes a fourth trip lever 240, the fourth trip lever 240 is rotatably connected to the insulating housing 100 through a rotation shaft and may contact or separate from the first latch 220, a push rod of the shunt release 710 may contact the fourth trip lever 240, and the fourth trip lever 240 may push the first latch 220 to trip under the pushing of the push rod of the shunt release 710, thereby disconnecting the first movable contact 410 from the first fixed contact 420. Similarly, the overcurrent protection trip 720 may contact with or separate from the third trip bar 360 of the second operating mechanism 300, when a short circuit occurs in the main circuit, the overcurrent protection trip 720 may push the third trip bar 360 to rotate, and the third trip bar 360 drives the second moving contact 510 to rotate through the connecting shaft 361, so as to implement the closing or opening of the second contact system 500.
The current collector 900 includes a current transformer 910 and a zero sequence transformer 920, where the current transformer 910 may detect current information on the main circuit and may transmit detected data to the electronic controller 800, the zero sequence transformer 920 may detect whether residual current exists between conductors of the main circuit and transmit detected data information to the electronic controller 800, and the electronic controller 800 determines whether to perform a protection action according to the received data information, and when the electronic controller 800 determines that overload, short circuit or residual current protection is required, the electronic controller 800 may send an instruction to the shunt release 710 or the overcurrent protection release 720, and the shunt release 710 or the overcurrent protection release 720 starts the protection action after receiving the protection instruction sent by the electronic controller 800.
The electronic controller 800 includes a communication device, the communication device includes a wired communication device and/or a wireless communication device, the communication manner of the wired communication device includes RS485, RS232, RS422, etherNet, CAN, deviceNet or Profibus, the communication manner of the wireless communication device includes Wifi, bluetooth, zigBee, NFC, GRPS, 20NB-IoT or LoRa, and the electronic controller 700 may implement communication with an external control center, an upper unit or a lower unit through the wired communication device and/or the wireless communication device.
The switching-on and switching-off process of the switching device is described in detail as follows:
when the switch device needs to be manually opened, if only the second contact system 500 is needed to realize the opening, the first contact system 400 is still in the closing state, only the second handle 310 needs to be manually pushed, the second lock catch 320 can drive the second moving contact 510 to rotate through the bending shaft 321 under the driving of the second handle 310, and the second moving contact 510 is separated from the second fixed contact 520, so that the opening of the second contact system 500 is realized, and at this time, the first contact system 400 is not influenced by the second contact system 500 and is still in the closing state.
If the manual opening of the first contact system 400 is required, the first handle 210 is only required to be pushed manually, and the first lock catch 220 can drive the first moving contact 410 to rotate around the rotating shaft 412 under the driving of the first handle 210, so as to realize the separation from the first fixed contact 420. Meanwhile, if the first contact system 400 is in the closed state, the lug 214 on the first handle 210 may push the second handle 310 to rotate synchronously, and the second lock 320 may drive the second moving contact 510 to rotate and separate from the second fixed contact 520 through the bending shaft 321 under the driving of the second handle 310, so as to realize the opening of the second contact system 500. As can be seen from the above description, when the first contact system 400 is manually opened, if the first contact system 400 is in the closed state, the second contact system 500 is synchronously driven to realize the manual opening, and in practical application, for example, during line maintenance, the second handle 310 is manually pushed to realize the opening of the second contact system 500, and then the first handle 210 is manually pushed to realize the manual opening of the first contact system 400, so that the independent operation between the first handle 210 and the second handle 310 is realized by setting the lugs 214 on the first handle 212 of the second handle 311 and the first handle 210 to be in a lap joint structure, thereby better meeting the requirements of products in specific occasions.
When the switching device needs to be manually switched on, the first handle 210 is manually pushed first, under the driving of the first handle 210, the first lock catch 220 drives the first moving contact 410 to rotate towards the direction close to the first fixed contact 420, so as to realize the manual switching on of the first contact system 400, then the second handle 310 is manually pushed, and the second lock catch 320 can drive the second moving contact 510 to rotate towards the direction close to the second fixed contact 520 under the driving of the second handle 310, so as to realize the manual switching on of the second contact system 500. In summary, when the first contact system 400 is manually pushed to close, the second contact system 500 is closed later than the first contact system 400.
When the user needs to automatically switch the switch device in the case of arrears, the electronic controller 800 receives an arrears power-off command sent by the background and sends a signal to the motor 610, the motor 610 starts to rotate, the reduction gear assembly 620 rotates under the driving of the motor 610, when the bump 623 of the driven gear set 621 contacts the second trip lever 350, the second trip lever 350 rotates around the rotating shaft 370 under the pushing of the bump 623, at this time, the pushing part 351 of the second trip lever 350 contacts with the pushing rod 363 of the third trip lever 360 and pushes the third trip lever 360 to rotate synchronously, so that the connecting shaft 362 drives the second moving contact 510 to rotate, and the automatic switch-off of the second contact system 500 is realized. Meanwhile, the first contact system 400 is in a closing state, the automatic opening of the second contact system 500 does not drive the automatic opening of the first contact system 400, in other words, when the condition that the automatic opening is required due to arrearage occurs, only the second contact system 500 needs to be opened, correspondingly, compared with the condition that two contact systems need to be opened simultaneously, the driving force required by a motor can be correspondingly reduced, and the volume and occupied space of the motor can be further reduced; if motors with the same specification are adopted, the motor of the scheme has better stability and more reliable driving under the same driving force.
When the user needs to automatically close the switch device after completing payment, the electronic controller 800 receives a power transmission instruction sent by the background and sends a signal to the motor 610, the motor 610 starts to rotate, the reduction gear assembly 620 rotates under the driving of the motor 610, and when the incomplete tooth structure 622 of the driven gear set 621 is meshed with the tooth structure 313 on the second handle 310, the second handle 310 can be driven to rotate, so that the automatic closing of the second contact system 500 is realized.
When the zero sequence transformer 920 detects that there is a residual current and automatic switching-off is needed, the electronic controller 800 sends an instruction to the shunt release 710, a push rod of the shunt release 710 may contact with the fourth release lever 240, under the action of the push rod of the shunt release 710, the fourth release lever 240 starts to rotate, the fourth release lever 240 may push the first latch 220 to release from the first opening slot 411 on the first moving contact 410, and the first moving contact 410 starts to rotate around the rotating shaft 412 due to no constraint of the first latch 220, so that the first moving contact 410 is disconnected from the first fixed contact 420, and switching-off of the first contact system 400 is further achieved. In the process of opening the first moving contact 410 and the first fixed contact 420, the first trip lever 340 may rotate around the corresponding rotation shaft 370 under the pushing of the columnar structure 413 of the first moving contact 410, so that the pushing lever 363 drives the second moving contact 510 to rotate, thereby closing or opening the second contact system 500. Namely: when residual current exists, in order to ensure personal safety of a user, the first contact system 400 and the second contact system 500 are both switched off, so that the switch device has a leakage indication function, and when the user or a maintainer sees that the first contact system 400 and the second contact system 500 are both in a switching-off state, the user or the maintainer can know that the switching-off is caused by the existence of the residual current, and the user cannot easily switch on manually before troubleshooting, so that personal safety is ensured.
When the current transformer 910 detects that there is a large current such as overload and short circuit and needs to be automatically opened, the electronic controller 800 sends an instruction to the overcurrent protection release 720, the push rod of the overcurrent protection release 720 pushes the third release lever 360, and the third release lever 360 starts to rotate around the rotation shaft 361, so that the second movable contact 510 is driven to rotate by the connection shaft 362, and further the opening of the second contact system 500 is realized, and at this time, the first contact system 400 is in a closing state. Namely: when overload, short circuit and the like exist, only the opening of the second contact system 500 is realized, and the first contact system 400 is in a closing state.
Of course, the switching device may be in the form of 1p+n, 2p, 3p or 3p+n, and when the switching device is in the form of 3p or 3p+n, the switching device may further include a third contact system or include a third contact system and a fourth contact system, where the third contact system and the fourth contact system may implement synchronous opening and closing with the second contact system through a linkage shaft. In addition, the electrically operated mechanism 600 may be disposed in the same insulating housing as the first contact system, the second contact system, the third contact system, or the fourth contact system, or may be disposed in a separate housing disposed in parallel with the insulating housing.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the applicant be deemed to have such subject matter not considered to be part of the subject matter of the disclosed application.
Claims (11)
1. The switching device comprises an insulating shell (100), wherein a first operating mechanism (200), a second operating mechanism (300), a first contact system (400), a second contact system (500) and an electric operating mechanism (600) are arranged in the insulating shell (100), and the switching device is characterized by further comprising a first tripping rod (340) and a second tripping rod (350), wherein the first tripping rod (340) can be respectively contacted with or separated from the first contact system (400) or the second operating mechanism (300), and the second tripping rod (350) can be respectively contacted with or separated from the second operating mechanism (300) or the electric operating mechanism (600).
2. A switching device according to claim 1, characterized in that the first trip bar (340) and the second trip bar (350) are coaxially arranged and are each free to rotate with respect to a rotational axis (370).
3. A switching device according to claim 1 or 2, characterized in that the second operating mechanism (300) comprises a third trip bar (360), which third trip bar (360) can be arranged coaxially or non-coaxially with the first trip bar (340) or the second trip bar (350).
4. A switching device according to claim 3, wherein a push rod (363) is fixed to the third trip rod (360), and the first trip rod (340) or the second trip rod (350) is in contact with or separated from the push rod (363).
5. A switching device according to claim 4, characterized in that a second open slot (341) is provided in the first trip bar (340) cooperating with the push bar (363).
6. A switching device according to claim 1, wherein the electrically operated mechanism (600) comprises a motor (610) and a reduction gear set (620), the reduction gear set (620) comprising a protrusion (623) cooperating with the second trip bar (350).
7. A switching device according to claim 1, wherein the first operating mechanism (200) comprises a first handle (210) and the second operating mechanism (300) comprises a second handle (310), the first handle (210) and the second handle (310) being contactable or separable.
8. A switching device according to claim 1, characterized in that the switching device is of the 1p+n or 2P type.
9. The switching device of claim 1, further comprising a trip device (700), the trip device (700) including at least a shunt trip (710).
10. A switching device according to claim 1, further comprising an electronic controller (800), the electronic controller (800) comprising a wireless communication device or a wired communication device.
11. The switching device of claim 10, wherein the wired communication means comprises RS485, RS232, RS422, etherNet, CAN, deviceNet or Profibus, and the wireless communication means comprises Wifi, bluetooth, zigBee, NFC, GRPS, 20NB-IoT or LoRa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012201.2A CN112701013B (en) | 2019-10-23 | 2019-10-23 | Switching device |
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| CN201911012201.2A CN112701013B (en) | 2019-10-23 | 2019-10-23 | Switching device |
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| CN112701013B true CN112701013B (en) | 2023-12-22 |
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| KR20090016342A (en) * | 2007-08-10 | 2009-02-13 | 엘에스산전 주식회사 | Mold cased circuit breaker with a contact on mechanism |
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