CN109872901A - A kind of automatic change-over - Google Patents
A kind of automatic change-over Download PDFInfo
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- CN109872901A CN109872901A CN201910302707.0A CN201910302707A CN109872901A CN 109872901 A CN109872901 A CN 109872901A CN 201910302707 A CN201910302707 A CN 201910302707A CN 109872901 A CN109872901 A CN 109872901A
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Abstract
A kind of automatic change-over, the first, second switch including all having a main shaft, a locking mechanism, at least a phase pole sets of contacts and neutral pole sets of contacts；Feature: the locking mechanism of the first, second switch is realized by linkage to link, during the closed state from first switch switches to the closed state of second switch, second locking mechanism drives first locking mechanism unlock by linkage, and first locking mechanism drives the first neutral pole sets of contacts to open；During the closed state from second switch switches to the closed state of first switch, first locking mechanism drives second locking mechanism to unlock by linkage, and second locking mechanism drives the second neutral pole sets of contacts to open；And during above-mentioned two switching, there are the first neutral pole sets of contacts and the second neutral pole sets of contacts are closed at and state that all first, second phases pole sets of contacts is opened.When Switching power, the neutrality of the neutral pole and UPS of realizing switch is very short to be closed at.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology fields, and in particular to a kind of automatic change-over.
Background technique
In some more special distribution occasions (such as data center computer room etc.), automatic change-over and uninterrupted is usually selected
Power supply (UPS) is applied in combination.The structure of neutral pole and phase pole in common automatic change-over is usually identical, therefore, is cutting
During changing power supply, the disconnection of neutral pole and phase pole and closed procedure are completely while to carry out, this makes in handoff procedure
In, previous power supply neutral pole and UPS neutral pole disconnect after to latter power supply neutral pole be linked into UPS neutral pole it
Between during, the neutral pole of UPS will appear the of short duration disconnection with the neutral pole of power supply, and the of short duration disconnection of the neutral pole will cause
The variation of UPS neutral pole above earth potential, generally reaches tens volts, this will adversely affect and lose to part electrical equipment,
Such as cause load equipment (such as server etc.) restart or corrupted data etc..
Presently, there are a kind of automatic change-overs, and in handoff procedure, that there are one section is same with the neutral pole of UPS for neutral pole
When overlapping time for connecting.But this automatic change-over still have the shortcomings that it is obvious: firstly, being opened in this automatic conversion
In the handoff procedure of pass, the neutrality of the phase pole of a power supply (such as alternating current all the way) and another power supply (such as another way alternating current)
Pole is long in the presence of the overlapping time being closed at, this can also have an adverse effect to the ground protection of circuit, such as ground protection is lost
Effect.Moreover, structure is complicated for this dual-power transfer switch, product size is very big, is unfavorable for installing and saving space.
Summary of the invention
The invention aims to provide a kind of automatic transfer switching electric appliance, it is negative to realize that change-over switch is disconnected from power supply all the way
It carries circuit and is connected to during other power supply all the way, neutral pole ratio Xiang Jihou disjunction is first connected, and in mains neutral pole all the way
Before conversion disconnects, neutral pole in addition all the way is connected, is also turned on the neutral conductor of two power supplys in short-term, after conversion end only
The neutral pole of current power is connected；There is not the case where disconnection in the load end neutral conductor in conversion process, solves conventional from turn
Zero earth potential drifting problem caused by switch neutral conductor in handoff procedure empties is changed, guarantees the equipotential of two-way mains neutral pole
It will not influence the stability and safety of load circuit operation；It is of short duration to be closed at the time for the neutral pole of this switch simultaneously, can be with
The influence to circuit ground protection is effectively reduced.
The purpose of the present invention is in this way to reach, a kind of automatic change-over, including first switch, second switch, institute
The first switch stated includes the first main shaft, first locking mechanism, at least one by the completion opening and closing movement of the first main shaft drives
The first phase pole sets of contacts and one by the first main shaft drives complete closed action the first neutral pole sets of contacts；Described second opens
Close includes the second main shaft, second locking mechanism, at least one the second phase pole acted by the completion opening and closing of the second main shaft drives
Sets of contacts and one by the second main shaft drives complete closed action the second neutral pole sets of contacts；The first locking mechanism and
Between two locking mechanisms by a linkage realize linkage, the automatic change-over the closed state from first switch to
During the closed state switching of second switch, second locking mechanism drives first locking mechanism to unlock by linkage,
First locking mechanism drives the first neutral pole sets of contacts to open；The automatic change-over from the closed state of second switch to
During the closed state switching of first switch, first locking mechanism drives second locking mechanism to unlock by linkage,
Second locking mechanism drives the second neutral pole sets of contacts to open；And during above-mentioned two switching, there are the first neutral poles
Sets of contacts and the second neutral pole sets of contacts are closed at and all first phases pole sets of contacts and all second phases pole sets of contacts are beaten
The state opened.
In a specific embodiment of the invention, the linkage is a rod-like element, along connecting rod in one end
Extending direction opens up a sliding slot, the one end of the linkage without sliding slot and first locking mechanism is hinged and second locking mechanism
It is slidably arranged in sliding slot with the tie point of linkage or the one end of the linkage without sliding slot locks machine with second
Structure is hinged and the tie point of first locking mechanism and linkage is slidably arranged in sliding slot.
In a specific embodiment of the invention, the first phase pole sets of contacts includes that can make the phase of first switch
Pole is closed a floodgate or the first phase pole moving contact and the first phase pole static contact of separating brake, and the first neutral pole sets of contacts includes that can make the
The neutral pole of one switch closes a floodgate or the first neutral pole moving contact and the first neutral pole static contact of separating brake；The second phase pole touching
Head group includes that the phase pole of second switch can be made to close a floodgate or the second phase pole moving contact and the second phase pole static contact of separating brake, and described the
Two neutral pole sets of contacts include the second neutral pole moving contact and the second neutrality that can make the neutral pole combined floodgate or separating brake of second switch
Pole static contact.
In a specific embodiment of the invention, the first switch further includes the drive for transmitting the first main shaft
The the first phase pole transmission device and be closed the first neutral pole sets of contacts that power respectively opens and closes the first phase pole sets of contacts
The first neutral pole transmission device, the second switch further includes making the second phase for transmitting the driving force of the second main shaft respectively
Second phase pole transmission device of pole sets of contacts opening and closing and the second neutral pole transmission for being closed the second neutral pole sets of contacts
Device.
In a specific embodiment of the invention, the first phase pole transmission device includes one end and the first main shaft
The first phase pole cantilever for being fixedly connected, one end first phase pole connecting rod hinged with the other end of the first phase pole cantilever, described the
The other end of one phase pole connecting rod and the first phase pole moving contact of the first phase pole sets of contacts are hinged；The second phase pole transmission device
The other end of the second phase pole cantilever for being fixedly connected including one end with the second main shaft, one end and the second phase pole cantilever it is hinged second
Phase pole connecting rod, the other end of the second phase pole connecting rod and the second phase pole moving contact of the second phase pole sets of contacts are hinged.
In a specific embodiment of the invention, the first neutral pole transmission device includes that one end and first are main
The first neutral pole cantilever that axis is fixedly connected, the first neutral pole cantilever have relative to the first phase pole cantilever in first
The angle offset in the first neutral pole static contact direction of property pole sets of contacts；The second neutral pole transmission device include one end with
The second neutral pole cantilever that second main shaft is fixedly connected, the second neutral pole cantilever relative to the second phase pole cantilever have to
The angle offset in the second neutral pole static contact direction of the second neutral pole sets of contacts.
In a specific embodiment of the invention, described first locking mechanism one end and first main shaft are cut with scissors
It connects, the other end acts on the first neutral pole moving contact of the first neutral pole sets of contacts；Described second locking mechanism one end and institute
The second main shaft stated is hinged, and the other end acts on the second neutral pole moving contact of the second neutral pole sets of contacts.
In a specific embodiment of the invention, the first locking mechanism includes by the first upper connecting rod and first
The first toggle device that lower link is hingedly constituted provides the first spring of opening force for the first neutral pole sets of contacts, to the first elbow
The first locating part that regulating device is limited, one end of first toggle device is installed with the first upper connecting rod annulus, another
End is then hinged with the first neutral pole moving contact of the first neutral pole sets of contacts, and it is main that the first upper connecting rod annulus is set in first
On axis；The second locking mechanism includes the second toggle device being hingedly made of the second upper connecting rod and the second lower link, is
Second neutral pole sets of contacts provides the second spring of opening force, the second locating part limited to the second toggle device, described
One end of the second toggle device be installed with the second upper connecting rod annulus, the other end is then neutral with the second of the second neutral pole sets of contacts
Pole moving contact is hinged, and the second upper connecting rod annulus is set on the second main shaft.
In a specific embodiment of the invention, first spring one end is hung on the first upper connecting rod and first
On the hinge joint of lower link, the other end is hung on the first neutral pole cantilever；Described second spring one end is hung on second
On the hinge joint of connecting rod and the second lower link, the other end is hung on the second neutral pole cantilever.
In a specific embodiment of the invention, the first locking mechanism locks the first neutral pole sets of contacts
In closed position, the first locating part limits the first toggle device, and the second locking mechanism touches the second neutral pole
When head group is locked in closed position, the second locating part limits the second toggle device.
The present invention one of has the advantage that due to the above structure, is realized and is linked by linkage, so that power supply
There are the neutral poles of first switch and the second switch to be all connected and all phases of first switch and the second switch in handoff procedure
The state that pole all disconnects solves the neutral pole of the neutral pole of UPS and power supply disconnection in the prior art and causes UPS neutral pole over the ground
The variation of current potential, at the same the neutral pole of this switch be closed at the time it is of short duration and be effectively reduced to circuit ground protection influence；
Advantage two, the change-over switch using plain connecting rod transmit power, realize the first neutral pole sets of contacts and the second neutral pole contact
Group is overlapped the simple and reliable for structure of the function of closure, is built in change-over switch, compact-sized, not will increase the body of change-over switch
Product.
Detailed description of the invention
Fig. 1 is the schematic diagram of change-over switch of the present invention (solid line indicates that neutral pole, dotted line indicate phase pole).
Fig. 2 a is the status diagram when neutral pole sets of contacts of first switch of the present invention starts closure.
The phase pole contact schematic diagram of first switch when Fig. 2 b is Fig. 2 a state.
Status diagram when Fig. 3 a is the phase pole sets of contacts closure of first switch of the present invention.
The state when first locking mechanism of first switch of the present invention is just through dead point when Fig. 3 b is Fig. 3 a state is shown
It is intended to.
Fig. 4 is that neutral pole sets of contacts closed position shows when the locking mechanism of first switch of the present invention reaches latched position
It is intended to.
Fig. 5 a is the phase pole sets of contacts open position schematic diagram of first switch of the present invention.
The neutral pole sets of contacts schematic diagram of first switch when Fig. 5 b is Fig. 5 a state.
Fig. 6 is first switch separating brake, the two neutral pole sets of contacts schematic diagram of second switch "on" position.
Fig. 7 is first switch separating brake, the two neutral pole sets of contacts schematic diagram of second switch main shaft gate-dividing state.
Fig. 8 is that neutral pole sets of contacts just contacts in first switch making process, second switch main shaft gate-dividing state and second
Locking mechanism will start neutral pole sets of contacts schematic diagram when unlocking motion.
Fig. 9 is that first switch is closed a floodgate, and second switch main shaft separating brake and its locking mechanism unlock, and the two neutral pole sets of contacts is shown
It is intended to.
Figure 10 is that first switch is closed a floodgate, neutral pole sets of contacts schematic diagram both when second switch separating brake.
In figure: 1. first switches, 11. first main shafts, 12. first locking mechanisms, 121. first toggle devices, 1211.
One upper connecting rod, 1212. first lower links, 122. first springs, 123. first locating parts, 124. first upper connecting rod annulus, 13.
One phase pole sets of contacts, 131. first phase pole moving contacts, 1311. first phase pole moving contact rotary shafts, 132. first phase pole static contacts,
14. the first phase pole transmission device, 141. first phase pole cantilevers, 142. first phase pole connecting rods, 15. first neutral pole sets of contacts,
151. first neutral pole moving contacts, 1511. first neutral pole moving contact rotary shafts, 152. first neutral pole static contacts, 16. first
Neutral pole transmission device, 161. first neutral pole cantilevers；
2. second switch, 21. second main shafts, 22. second locking mechanisms, 221. second toggle devices, 2211. second upper connecting rods,
2212. second lower links, 222. second springs, 223. second locating parts, 224. second upper connecting rod annulus, 225. tappets, 23.
Second phase pole sets of contacts, 231. second phase pole moving contacts, 2311. second phase pole moving contact rotary shafts, 232. second phase pole stationary contacts
Head, 24. second phase pole transmission devices, 241. second phase pole cantilevers, 242. second phase pole connecting rods, 25. second neutral pole sets of contacts,
251. second neutral pole moving contacts, 2511. second neutral pole moving contact rotary shafts, 252. second neutral pole static contacts, 26. second
Neutral pole transmission device, 261. second neutral pole cantilevers；
3. linkage, 31. sliding slots.
Specific embodiment
Detailed description of specific embodiments of the present invention with reference to the accompanying drawing, but is not to technology to the description of embodiment
The limitation of scheme, any design according to the present invention, which changes in the form rather than substance, all should be considered as protection scope of the present invention.
As shown in Figures 1 to 10, the present invention relates to a kind of automatic change-overs, including first switch 1,2 and of second switch
Realize the linkage 3 to link between first switch 1 and second switch 2,2 structure base of the first switch 1 and second switch
This is identical, specifically, the first switch 1 includes the first main shaft 11, first locking mechanism 12, at least one by the first main shaft 11
It drives and completes the first phase pole sets of contacts 13 of opening and closing movement, makes the first phase for transmitting the driving force of the first main shaft 11
First phase pole transmission device 14 of the opening and closing of pole sets of contacts 13 is driven in complete closed action first by the first main shaft 11
Property pole sets of contacts 15 and the driving force for being driven the first main shaft 11 the first neutral pole for being closed the first neutral pole sets of contacts 15
Transmission device 16；The second switch 2 is driven including the second main shaft 21, second locking mechanism 22, at least one by the second main shaft 21
The second phase pole sets of contacts 23 that is dynamic and completing opening and closing movement makes the second phase pole for transmitting the driving force of the second main shaft 21
Second phase pole transmission device 24 of the opening and closing of sets of contacts 23 is driven the second neutrality for completing closed action by the second main shaft 21
The second neutral pole that pole sets of contacts 25 and driving force for being driven the second main shaft 21 are closed the second neutral pole sets of contacts 25 passes
Dynamic device 26；Pass through institute between the first locking mechanism 12 of the first switch 1 and the second locking mechanism 22 of second switch 2
The linkage 3 stated realizes linkage.The first switch 1 and second switch 2 respectively further comprises the respective main axis of driving
Operating mechanism, belongs to well-known technique, and the present invention repeats no more.
As shown in Figures 1 to 10, the first phase pole sets of contacts 13 includes that the phase pole of first switch 1 can be made to close a floodgate or divide
The the first phase pole moving contact 131 and the first phase pole static contact 132 of lock, the first phase pole moving contact 131 can be around the first phase pole
Moving contact rotary shaft 1311 rotates, and completes and the closure of the first phase pole static contact 132 and separates.The first neutral pole contact
Group 15 includes the first neutral pole moving contact 151 and the first neutral pole stationary contact that can make the neutral pole combined floodgate or separating brake of first switch 1
First 152, the first neutral pole moving contact 151 can be rotated around the first neutral pole moving contact rotary shaft 1511, be completed and first
The closure and separation of neutral pole static contact 152.Wherein, the first phase pole moving contact rotary shaft 1311 and the rotation of the first neutral pole moving contact
Shaft 1511 can be the not coax segments of the 1 same shaft member in inside of first switch.
As shown in Fig. 1, Fig. 6 to Figure 10, the second switch 2 is identical as the mechanism of first switch 1, and specific structure is:
The second phase pole sets of contacts 23 includes that can make 231 He of the second phase pole moving contact of the phase pole combined floodgate or separating brake of second switch 2
Second phase pole static contact 232, the second phase pole moving contact 231 can be rotated around the second phase pole moving contact rotary shaft 2311, complete
At with the closure of the second phase pole static contact 232 and separate.The second neutral pole sets of contacts 25 includes that can make second switch 2
Neutral pole closes a floodgate or the second neutral pole moving contact 251 and the second neutral pole static contact 252 of separating brake, and second neutral pole is dynamic
Contact 251 can be rotated around the second neutral pole moving contact rotary shaft 2511, complete with the closure of the second neutral pole static contact 252 and point
From.
The mistake that the automatic change-over switches in the closed state from first switch 1 to the closed state of second switch 2
Cheng Zhong, the first main shaft 11 drive in 13 opening procedure of the first phase pole sets of contacts, and first locking mechanism 12 is located at the first neutral pole
The latched position that sets of contacts 15 locks, is kept in contact the first neutral pole moving contact 151 with the first neutral pole static contact 152, the
Two main shafts 21 drive in the second phase pole sets of contacts 23 and 25 closing course of the second neutral pole sets of contacts, and second locking mechanism 22 will be to will
The latched position movement of second neutral pole sets of contacts 25 locking, and drive first locking mechanism 12 to unlock by linkage 3, the
After two neutral pole moving contacts 251 are contacted with the second neutral pole static contact 252, first locking mechanism 12 drives the first neutral pole contact
First neutral pole moving contact 151 of group 15 is separated with the first neutral pole static contact 152；And in the automatic change-over from
During the closed state of two switches 2 switches to the closed state of first switch 1, the second main shaft 21 drives the second phase pole contact
In 23 opening procedures of group, second locking mechanism 22 is located at the latched position for locking the second neutral pole sets of contacts 25, makes in second
Property pole moving contact 251 be kept in contact with the second neutral pole static contact 252, the first main shaft 11 drives the first phase pole sets of contacts 13 and the
In one neutral pole sets of contacts, 15 closing course, first locking mechanism 12 is to the latched position for locking the first neutral pole sets of contacts 15
Movement, and drive second locking mechanism 22 to unlock by linkage 3, the first neutral pole moving contact 151 and the first neutral pole are quiet
After contact 152 contacts, second locking mechanism 22 drives the second neutral pole moving contact 251 and second of the second neutral pole sets of contacts 25
Neutral pole static contact 252 separates.
The first locking mechanism 12 includes be hingedly made of the first upper connecting rod 1211 and the first lower link 1212
One toggle device 121, one end are hung on the first spring 122 that on the first toggle device 121 and the other end is firmly fixed, to
The first locating part 123 that one toggle device 121 is limited.The hinge joint of first toggle device 121 is P1, described
One end of first toggle device 121 is installed with the first upper connecting rod annulus 124, the other end then with the first neutral pole sets of contacts 15
One neutral pole moving contact 151 is hinged.The first upper connecting rod annulus 124 is set on the first main shaft 11.Described first is main
11 center of rotation of axis is O1, the hinge joint of first lower link 1212 and the first neutral pole moving contact 151 is O2.Described
First phase pole transmission device 14 includes the first phase pole cantilever 141, one end and the first phase that one end is fixedly connected with the first main shaft 11
The first hinged phase pole connecting rod 142 of the other end of pole cantilever 141, the other end and the first phase of the first phase pole connecting rod 142
First phase pole moving contact 131 of pole sets of contacts 13 is hinged.The first phase pole cantilever 141 and the first phase pole connecting rod
142 hinge joint is P2, and the hinge joint of the first phase pole connecting rod 142 and the first phase pole moving contact 131 is O3.Described
The first neutral pole cantilever 161 that one neutral pole transmission device 16 is fixedly connected including one end with the first main shaft 11, described first
Neutral pole cantilever 161 has the first neutral pole static contact to the first neutral pole sets of contacts 15 relative to the first phase pole cantilever 141
The angle angle offset θ in 152 directions.
The second locking mechanism 22 includes be hingedly made of the second upper connecting rod 2211 and the second lower link 2212
Two toggle devices 221, one end are hung on the second spring 222 that on the second toggle device 221 and the other end is firmly fixed, to
The second locating part 223 that two toggle devices 221 are limited.The hinge joint of second toggle device 221 is P3, described
One end of second toggle device 221 is installed with the second upper connecting rod annulus 224, the other end then with the second neutral pole sets of contacts 25
Two neutral pole moving contacts 251 are hinged.The second upper connecting rod annulus 224 is set on the second main shaft 21.Described second is main
21 center of rotation of axis is O4, the hinge joint of second lower link 2212 and the second neutral pole moving contact 251 is O5.Described
Second phase pole transmission device 24 includes the second phase pole cantilever 241, one end and the second phase that one end is fixedly connected with the second main shaft 21
The second hinged phase pole connecting rod 242 of the other end of pole cantilever 241, the other end and the second phase of the second phase pole connecting rod 242
Second phase pole moving contact 231 of pole sets of contacts 23 is hinged.The second phase pole cantilever 241 and the second phase pole connecting rod
242 hinge joint is P4, and the hinge joint of the second phase pole connecting rod 242 and the second phase pole moving contact 231 is O6.Described
The second neutral pole cantilever 261 that two neutral pole transmission devices 26 are fixedly connected including one end with the second main shaft 21, described second
Neutral pole cantilever 261 has the second neutral pole static contact to the second neutral pole sets of contacts 25 relative to the second phase pole cantilever 241
The angle angle offset θ in 252 directions.
One end of first spring 122 can be hung on the hinge joint of the first upper connecting rod 1211 and the first lower link 1212
On, it can also be hung on the hinge joint of the first lower link 1212 and the first neutral pole moving contact 151, i.e. the first spring 122
Hanging for one end is a little unlimited, and equally, the other end of the first spring 122 can be fixed on the shell of first switch 1, can also hang
On the first neutral pole cantilever 161, i.e., the other end of the first spring 122 hang it is a little unlimited, as long as the first spring 122 can be made
The opening force of first neutral pole sets of contacts 15 is provided.The second spring 222 is similarly arranged.
As shown in Fig. 1,6,7,8,9,10, the linkage 3 is a rod-like element, and one end is hinged on first switch 1
First locking mechanism 12 the first toggle device 121 hinge joint P1 on, the other end opens up a sliding slot along connecting rod extending direction
31, the second locking mechanism 22 of the second switch 2 and the tie point at the end are slidably disposed in the sliding slot 31.At this
In embodiment, the second locking mechanism 22 of second switch 2 is equipped with tappet 225, is the second upper connecting rod of second switch 2
2211 are arranged in the extended segment by center of the other side of the second upper connecting rod annulus 224, the free end of the tappet 225
In the sliding slot 31.Certainly, the linkage 3 can be installed in turn, one end and first switch 1 with sliding slot 31
Connection, one end without sliding slot 31 is connected with the hinge joint P3 of the second toggle device 221 of second switch 2.Preferably, it is servo-actuated
The equal length of the length of bar 225 and the second upper connecting rod 2211, sliding slot 31 are provided in the rod-like element of linkage 3, certainly sliding
Slot 31 can also be provided on tappet 225.In the diagrammatically shown embodiment of the present invention, due to first switch 1 and second switch 2
Sets of contacts opening and closing direction it is identical, two with first locking mechanism 12 and second locking mechanism 22 of linkage 3
A tie point should be located at the two sides of the center of rotation of the main shaft of first switch 1 and second switch 2, even linkage 3 with
The hinge joint of first locking mechanism 12 is located in the first upper connecting rod 1211, then linkage 3 and second locking mechanism 22 is hinged
Point is located on the extended line Jing Guo 21 center of rotation of the second main shaft of the second upper connecting rod 2211 to be servo-actuated described in such as the present embodiment
Bar 225；Certain 1 sets of contacts of first switch opening and closing direction and the sets of contacts opening and closing direction of second switch 2 can be with
Be set as on the contrary, at this time linkage 3 should be simultaneously with two tie points of first locking mechanism 12 and second locking mechanism 22
Positioned at the same side of first switch 1 and the center of rotation of the main shaft of second switch 2, if such as linkage 3 and first locking machine
The hinge joint of structure 12 is located in the first upper connecting rod 1211, then linkage 3 and the hinge joint of second locking mechanism 22 are located at second
In upper connecting rod 2211.
First by taking first switch 1 as an example, the making process and separating brake process of first switch 1 or second switch 2 are described, thus
Illustrate when switching combined floodgate, neutral pole is extremely first connected than mutually；When switching separating brake, phase pole is completed in separating brake disconnection process, in
Property pole tends to remain on.
1 making process of first switch is as follows:
As shown in Figure 1, O1For the center of rotation of the first main shaft 11, P1 is that the first upper connecting rod 1211 and the first lower link 1212 are hinged
Center, P2 are the hinged center of the first phase pole cantilever 141 and the first phase pole connecting rod 142, O2For the first lower link 1212 and first
The hinged center of neutral pole moving contact 151, O3For the hinged center of the first phase pole connecting rod 142 and the first phase pole moving contact 131.Institute
The first neutral pole cantilever 161 is stated to be fixedly connected with the angled θ of the first phase pole cantilever 141 and with the first main shaft 11.
First main shaft 11 is around main-shaft core O1Rotationally clockwise, the movement of the first phase pole cantilever 141, the first phase pole are driven
Cantilever 141 drives the movement of the first phase pole connecting rod 142, and the first phase pole connecting rod 142 drives the movement of the first phase pole moving contact 131.When
One phase pole cantilever 141 turns to and O1 O3When line is in 2 alpha+beta angle, as shown in Figure 2 b, the first phase pole moving contact 131 and first
Phase pole static contact 132 is not in contact with the first phase pole does not turn on.Wherein, when α is that phase pole sets of contacts is closed, the first phase pole cantilever 141 with
O1 O3The angle of line (dead-centre position that the first phase pole cantilever 141 and the first phase pole connecting rod 142 are in a straight line), the angle α such as Fig. 3 a
Shown in, above-mentioned is by taking first switch 1 as an example, and α is equally applicable to second switch 2；β is that the first main shaft 1 combined floodgate is completed to stop turning
When dynamic, the first upper connecting rod 1211 and O1 O2Line (the first upper connecting rod 1211 and the first lower link 1212 in a straight line dead point position
Set) angle, as shown in figure 3b, above-mentioned is by taking first switch 1 as an example, and α is equally applicable to second switch 2 at the angle β；At this point, such as
Shown in Fig. 2 a, rotating clockwise for the first main shaft 11 drives the rotation of the first neutral pole cantilever 161, and the first neutral pole cantilever 161 pushes away
Dynamic first upper connecting rod 1211 rotation, the first upper connecting rod 1211 then drive the first lower link 1212 to move, the first lower link 1212
The first neutral pole moving contact 151 is driven to rotate counterclockwise around the first neutral pole moving contact rotary shaft 1511 again, when the first upper connecting rod
1211 turn to and O1O2Line is in α angle, and the first neutral pole moving contact 151 contacts with the first neutral pole static contact 152, makes the
The conducting of one neutral pole.I.e. when first switch 1 is closed a floodgate, the first neutral pole is extremely first connected than the first phase.
As shown in Figure 3a, the first phase pole cantilever 141 continues to drive the rotation of the first phase pole moving contact 131, when the first phase is extremely outstanding
Arm 141 turns to and O1 O3When line is in α angle, the first phase pole moving contact 131 is contacted with the first phase pole static contact 132, and first
When phase pole is connected, closing position is reached.At this time as shown in Figure 3b, the first neutral pole cantilever 161 drives the first upper connecting rod 1211 same
Step turns over alpha+beta angle, and P1 turns over O1O2Line, i.e., P1 at this time is slightly beyond under the first main shaft 11, the first upper connecting rod 1211, first
The dead-centre position of the link mechanism of connecting rod 1212 and the first neutral pole moving contact 151 composition.During this, the first neutral pole is still located
In on state.
As shown in figure 4, first main shaft 11 stops operating after driving the first phase pole to reach closing position, described the
One neutral pole moving contact 151 is neutral since P1 crosses the first main shaft 11, the first upper connecting rod 1211, the first lower link 1212 and first
The dead-centre position for the link mechanism that pole moving contact 151 forms, continues to revolve through alpha-beta angle to the first locating part under effect of inertia
Stop when 123, neutral pole tends to remain on.
1 separating brake process of first switch is as follows:
First main shaft 11 is around main-shaft core O1It rotates in an anti-clockwise direction, the first phase pole cantilever 141 is driven to rotate counterclockwise,
First phase pole cantilever 141 drive the first phase pole connecting rod 142 movement, the first phase pole connecting rod 142 drive the first phase pole moving contact 131 around
First phase pole moving contact rotary shaft 1311 is clockwise to open position, and the first phase pole is completed separating brake and disconnected, as shown in Figure 5 a.
In the process, the first neutral pole cantilever 161 turns to open position with the first main shaft 11, due on the first main shaft 11 and first
Connecting rod 1211 is rotatablely connected by the first upper connecting rod annulus 124, so the rotation of the first main shaft 11 cannot drive the first upper connecting rod
1211 turn to open position；First main shaft 11, the first upper connecting rod 1211, the first lower link 1212 and the first neutral pole moving contact
The link mechanism of 151 compositions remains stationary under the effect of the first locating part 123, tends to remain on the first neutral pole, such as schemes
Shown in 5b.
Neutral pole overlapping conversion is described below, to illustrate, from the first switch 1 and the second switch 2 wherein
The closed state that the closed state of one switch is switched to the first switch 1 and 2 another one of the second switch is cut
During changing, contacted there are the first neutral pole moving contact 151 of the first switch 1 with the first neutral pole static contact 152 and institute
State the state that the second neutral pole moving contact 251 of second switch 2 is also contacted with the second neutral pole static contact 252, that is, make first to open
The neutral pole of pass 1 and second switch 2 is all connected, and all phase poles of the first switch 1 and all phases of the second switch 2
The state that pole all disconnects.Below by way of from 1 separating brake of first switch and state that second switch 2 closes a floodgate close a floodgate to first switch 1 and
The process of the state conversion of 2 separating brake of second switch is illustrated.
As shown in figures 1 to 6, shown in fig. 6 is 1 separating brake of first switch and 2 "on" position of second switch, at this point,
Under 161 position-limiting action of one spring, 122 pulling force and the first neutral pole cantilever, the first neutral pole moving contact 151 and the first neutral pole are quiet
Contact 152 is maintained at separating brake, the first phase pole moving contact 131 and the first phase pole static contact 132 and keeps under the effect of the first main shaft 11
In separating brake open position.Second toggle device 221 of second switch 2 crosses dead point, the second neutral pole moving contact 251 and to the left
Two neutral static contacts 252 are maintained at closing position, the second phase pole moving contact under contact pressure and the effect of the second locating part 223
231 and second phase pole static contact 232 the second main shaft 21 effect under be maintained at combined floodgate closed position.
Firstly, as shown in Figure 1 and Figure 7, the second main shaft 21 of second switch 2 rotates counterclockwise, the second phase pole cantilever is driven
241 rotate counterclockwise, and the second phase pole cantilever 241 drives the movement of the second phase pole connecting rod 242, the second phase pole connecting rod
242 the second phase pole moving contacts 231 of pulling rotate clockwise, and separate with the second phase pole static contact 232 to open position, in this process
In, the second neutral pole cantilever 261 is rotated counterclockwise with the second main shaft 21, far from the second upper connecting rod 2211, still, the second neutral pole
Moving contact 251 and the second neutral pole static contact 252 are maintained at closing position under contact pressure and the effect of the second locating part 223,
I.e. during the second main shaft 21 of second switch 2 drives its second phase pole sets of contacts 23 to complete opening action, second switch 2
Second locking mechanism 22 its second neutral pole sets of contacts 25 is locked in closed position.
Next, the first main shaft 11 of first switch 1 rotates clockwise as shown in Fig. 1, Fig. 5 a and Fig. 8, the first phase is driven
Pole cantilever 141 and the first neutral pole cantilever 161 rotate clockwise, and the first phase pole cantilever 141 drives the first phase pole connecting rod 142 dynamic
Make, to drive the first phase pole moving contact 131 to rotate counterclockwise, until being closed with the first phase pole static contact 132, in this process
In, the first neutral pole cantilever 161 drives the first upper connecting rod 1211 to rotate clockwise, and overcomes the pulling force of the first spring 122, drives the
One lower link 1212 and connecting rod 3 act, and on the one hand the first neutral pole moving contact 151 and the first neutral pole static contact 152 are driven to close
It closes, moves the free end of the second upper connecting rod extended segment 225 in sliding slot 31.In the present embodiment, in first
Property pole cantilever 161 drive the first upper connecting rod 1211 that first neutral pole moving contact 151 is just arrived to and the first neutral pole static contact
152 contact position, the second upper connecting rod extended segment 225 freely correct the right end for sliding into sliding slot 31, as shown in figure 8,
So that the first locking mechanism 12 of first switch 1 drives the second locking mechanism 22 of second switch 2 to open by the linkage 3
Begin to unlock.
Next, the first main shaft 11 of first switch 1 continues to rotate, the first neutral pole cantilever 161 is driven to continue to rotate, the
One neutral pole cantilever 161 continues that the first upper connecting rod 1211 is driven to rotate clockwise, and overcomes the pulling force of the first spring 122, drives the
One lower link 1212 and connecting rod 3 act, on the one hand, contact in the first neutral pole moving contact 151 and the first neutral pole static contact 152
In the state of closure, the first lower link 1212 pushes the first neutral pole moving contact 151, overcomes touch spring power, the first upper connecting rod
1211 and first lower link 1212 cross dead-centre position (the first upper connecting rod 1211 and the first lower link 1212 be substantially in a straight line
On) after, the first upper connecting rod 1211 is limited by the first locating part 123, and the arrival of first locking mechanism 12 of first switch 1 will as a result,
Its first neutral pole sets of contacts 15 is locked in the latched position of closed position, and in the process, on the other hand, the second upper connecting rod is prolonged
The free end for stretching section 225 is pulled by connecting rod 3, so that the second upper connecting rod 2211 of second switch 2 turns counterclockwise around the second main shaft 21
It is dynamic, and after moving right and crossing dead-centre position (the second upper connecting rod 2211 and the second lower link 2212 are substantially in a straight line), such as
Shown in Fig. 9, locking of the second locking mechanism 22 to the closed position of the second neutral pole sets of contacts 25 is relieved.
Since first switch 1 is under the action of first locking mechanism 12, the first neutral pole sets of contacts 15 is locked in closure
Position, on the basis of the second locking mechanism 22 of Fig. 9 releases after closed position locking the second neutral pole sets of contacts 25, the
The hinge joint of the second toggle device 221 is pulled under the pulling force effect of the second spring 222 of two switches 2, so that the of second switch 2
Two lower links 2212 drive the second neutral pole moving contact 251 of second switch 2 to rotate clockwise, until the second upper connecting rod 2211 is dynamic
Make to being limited by the second neutral pole cantilever 261, the second neutral pole sets of contacts 25 of second switch 2 is opened.Complete as a result, from
1 separating brake of first switch and second switch 2 close a floodgate to first switch 1 close a floodgate and 2 separating brake of second switch conversion.
If closing a floodgate from first switch 1 and the state of 2 separating brake of second switch being to 1 separating brake of first switch and second switch 2 closes a floodgate
State conversion, the movement of each components is then and from 1 separating brake of first switch and second switch 2 closes a floodgate and closes a floodgate to first switch 1 and the
The process of the conversion of two switches, 2 separating brake is opposite.
In above preferred embodiment, is rotated clockwise in the first main shaft 11 of first switch 1 and drive the first neutral pole outstanding
Arm 161 rotates clockwise, thus driving the first toggle device 121 movement, so that the first neutral pole moving contact 151 and first is neutral
When pole static contact 152 is just contacted, as shown in figure 8, the hinge joint of tappet 225 and connecting rod 3 is placed exactly in sliding slot 31 most
Right end, next, when the first main shaft 11 further rotates clockwise so that the first upper connecting rod 1211 and the first lower link 1212
During hinge joint is moved to the left, first locking mechanism 12 pulls second locking mechanism 22 to start to release the second lock by connecting rod 3
Determine mechanism 22 to lock the closed position of the second neutral pole sets of contacts 25.But automatic change-over of the invention, the first locking
The movement of mechanism 12 and second locking mechanism 22 is not limited to the above embodiments with the conjunction, equally with from 1 separating brake of first switch and
The state that second switch 2 closes a floodgate closes a floodgate to first switch 1 and for the state conversion process of 2 separating brake of second switch, it is only necessary to protect
Card is within the period that the first neutral pole moving contact 151 of first switch 1 is contacted with the first neutral pole static contact 152, in second
Property pole moving contact 251 and the second neutral pole static contact 252 there is time of contact section, the unlock for second locking mechanism 22
Movement (hinge joint of the second toggle device 221 as shown in Figure 8 is moved through dead point to the right) can be in first locking mechanism 12
It drives and is completed before the first neutral pole moving contact 151 and the rigid time of contact of the first neutral pole static contact 152, be also possible to the first lock
Determine to complete after mechanism 12 drives the first neutral pole moving contact 151 to contact with the first neutral pole static contact 152.First switch 1
The dynamic/static contact of first neutral pole sets of contacts 15 touches the dynamic/static contact separation of the second neutral pole sets of contacts 25 of second switch 2
It is much smaller than ground protection actuation time 100ms this period (neutral pole overlapping time).
Equally with from 1 separating brake of first switch and state that second switch 2 closes a floodgate is closed a floodgate to first switch 1 and second switch 2
For the state conversion process of separating brake, in 1 making process of first switch, the first neutral pole sets of contacts 15 of first switch 1 is closed
After conjunction, after the dynamic/static contact contact that can be the first phase pole sets of contacts 13 of first switch 1, the second neutral pole of second switch 2
The dynamic/static contact of sets of contacts 25 separates, after being also possible to the dynamic/static contact separation of the second neutral pole sets of contacts 25 of second switch 2,
The dynamic/static contact of first phase pole sets of contacts 13 of first switch 1 contacts.
Claims (10)
1. a kind of automatic change-over, including first switch (1), second switch (2), the first switch (1) includes first
Main shaft (11), first locking mechanism (12), at least one are driven the first phase for completing opening and closing movement by the first main shaft (11)
Pole sets of contacts (13) and one is driven the first neutral pole sets of contacts (15) for completing closed action by the first main shaft (11)；Described
Two switch (2) include the second main shaft (21), second locking mechanism (22), at least one by the second main shaft (21) drive complete open and
Second phase pole sets of contacts (23) of closed action and one drives the second neutral pole for completing closed action to touch by the second main shaft (21)
Head group (25)；It is characterized by: being filled between the first locking mechanism (12) and second locking mechanism (22) by a connecting rod
It sets (3) and realizes linkage, the automatic change-over is in the closed state from first switch (1) to the closed form of second switch (2)
During state switches, second locking mechanism (22) drives first locking mechanism (12) unlock, the first lock by linkage (3)
Determining mechanism (12) drives the first neutral pole sets of contacts (15) to open；In the automatic change-over from the closure of second switch (2)
During state switches to the closed state of first switch (1), first locking mechanism (12) drives the by linkage (3)
Two locking mechanisms (22) unlock, second locking mechanism (22) drive the second neutral pole sets of contacts (25) to open；And above-mentioned two
During switching, be closed at there are the first neutral pole sets of contacts (15) and the second neutral pole sets of contacts (25) and all first
The state that phase pole sets of contacts (13) and all second phases pole sets of contacts (23) are opened.
2. a kind of automatic change-over according to claim 1, it is characterised in that the linkage (3) is one rod-shaped
Part is opened up a sliding slot (31) along connecting rod extending direction in one end, the one end of the linkage (3) without sliding slot (31) and the
One locking mechanism (12) is hinged and the tie point of second locking mechanism (22) and linkage (3) is slidably arranged in sliding slot (31)
The one end of interior or described linkage (3) without sliding slot (31) and second locking mechanism (22) are hinged and first locking mechanism
(12) it is slidably arranged in the tie point of linkage (3) in sliding slot (31).
3. a kind of automatic change-over according to claim 1, it is characterised in that the first phase pole sets of contacts (13)
Including that the phase pole of first switch (1) can be made to close a floodgate or the first phase pole moving contact (131) and the first phase pole static contact of separating brake
(132), the first neutral pole sets of contacts (15) includes that can make in the neutral pole combined floodgate of first switch (1) or the first of separating brake
Property pole moving contact (151) and the first neutral pole static contact (152)；The second phase pole sets of contacts (23) includes that second can be made to open
The phase pole for closing (2) is closed a floodgate or the second phase pole moving contact (231) and the second phase pole static contact (232) of separating brake, in described second
Property pole sets of contacts (25) include can make second switch (2) neutral pole close a floodgate or separating brake the second neutral pole moving contact (251) and
Second neutral pole static contact (252).
4. a kind of automatic change-over according to claim 3, it is characterised in that the first switch (1) further includes using
In the first phase pole that the driving force of transmitting the first main shaft (11) respectively opens and closes the first phase pole sets of contacts (13) transmission dress
The the first neutral pole transmission device (16) set (14) and be closed the first neutral pole sets of contacts (15), the second switch (2)
It further include the second phase for respectively opening and closing the second phase pole sets of contacts (23) for transmitting the driving force of the second main shaft (21)
Pole transmission device (24) and the second neutral pole transmission device (26) for being closed the second neutral pole sets of contacts (25).
5. a kind of automatic change-over according to claim 4, it is characterised in that the first phase pole transmission device
(14) include the first phase pole cantilever (141), one end and the first phase pole cantilever (141) that one end is fixedly connected with the first main shaft (11)
Hinged the first phase pole connecting rod (142) of the other end, the other end and the first phase pole contact of the first phase pole connecting rod (142)
First phase pole moving contact (131) of group (13) is hinged；The second phase pole transmission device (24) includes one end and the second main shaft
(21) the second phase pole cantilever (241) for being fixedly connected, one end second phase pole hinged with the other end of the second phase pole cantilever (241)
Connecting rod (242), the other end and the second phase pole moving contact of the second phase pole sets of contacts (23) of the second phase pole connecting rod (242)
(231) hinged.
6. a kind of automatic change-over according to claim 5, it is characterised in that the first neutral pole transmission device
It (16) include the first neutral pole cantilever (161) that one end is fixedly connected with the first main shaft (11), the first neutral pole cantilever
(161) there is the first neutral pole static contact (152) to the first neutral pole sets of contacts (15) relative to the first phase pole cantilever (141)
The angle offset in direction；The second neutral pole transmission device (26) includes that one end is fixedly connected with the second main shaft (21)
Two neutral pole cantilevers (261), the second neutral pole cantilever (261) have relative to the second phase pole cantilever (241) to second
The angle offset in second neutral pole static contact (252) direction of neutral pole sets of contacts (25).
7. a kind of automatic change-over according to claim 6, it is characterised in that the first locking mechanism (12) one
Hingedly with first main shaft (11), the other end acts on the first neutral pole moving contact of the first neutral pole sets of contacts (15) at end
(151)；Hingedly, the other end acts on the second neutrality for described second locking mechanism (22) one end and second main shaft (21)
Second neutral pole moving contact (251) of pole sets of contacts (25).
8. a kind of automatic change-over according to claim 7, it is characterised in that first locking mechanism (12) packet
It includes the first toggle device (121) being hingedly made of the first upper connecting rod (1211) and the first lower link (1212), be first neutral
Pole sets of contacts (15) provides the first spring (122) of opening force, the first locating part limited to the first toggle device (121)
(123), one end of first toggle device (121) is installed with the first upper connecting rod annulus (124), the other end then with first in
Hingedly, the first upper connecting rod annulus (124) is set in first to first neutral pole moving contact (151) of property pole sets of contacts (15)
On main shaft (11)；The second locking mechanism (22) includes hinged by the second upper connecting rod (2211) and the second lower link (2212)
The second toggle device (221) for constituting provides the second spring (222) of opening force for the second neutral pole sets of contacts (25), to the
One end of the second locating part (223) that two toggle devices (221) are limited, second toggle device (221) is installed with
Second upper connecting rod annulus (224), the other end are then cut with scissors with the second neutral pole moving contact (251) of the second neutral pole sets of contacts (25)
It connects, the second upper connecting rod annulus (224) is set on the second main shaft (21).
9. a kind of automatic change-over according to claim 8, it is characterised in that described the first spring (122) one end is hung
It sets on the hinge joint of the first upper connecting rod (1211) and the first lower link (1212), the other end is hung on the first neutral pole cantilever
(161) on；Described second spring (222) one end is hung on the hinged of the second upper connecting rod (2211) and the second lower link (2212)
On point, the other end is hung on the second neutral pole cantilever (261).
10. a kind of automatic change-over according to claim 8, it is characterised in that the first locking mechanism (12) will
When first neutral pole sets of contacts (15) is locked in closed position, the first locating part (123) limits the first toggle device (121)
Position, when the second neutral pole sets of contacts (25) is locked in closed position by the second locking mechanism (22), the second locating part (223)
Second toggle device (221) is limited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302707.0A CN109872901B (en) | 2019-04-16 | 2019-04-16 | Automatic change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302707.0A CN109872901B (en) | 2019-04-16 | 2019-04-16 | Automatic change-over switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109872901A true CN109872901A (en) | 2019-06-11 |
| CN109872901B CN109872901B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910302707.0A Active CN109872901B (en) | 2019-04-16 | 2019-04-16 | Automatic change-over switch |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700519A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Automatic conversion switching device with neutral pole overlapping and switching functions |
| US20170149274A1 (en) * | 2015-11-24 | 2017-05-25 | Schneider Electric Industries Sas | Transfer switching equipment |
| CN207925334U (en) * | 2018-01-09 | 2018-09-28 | 施耐德电器工业公司 | Dual-power transfer switch |
| CN108735531A (en) * | 2018-06-26 | 2018-11-02 | 上海良信电器股份有限公司 | A kind of automatic change-over with overlapping neutral function |
| CN209434050U (en) * | 2019-04-16 | 2019-09-24 | 常熟开关制造有限公司(原常熟开关厂） | A kind of automatic change-over |
-
2019
- 2019-04-16 CN CN201910302707.0A patent/CN109872901B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700519A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Automatic conversion switching device with neutral pole overlapping and switching functions |
| US20170149274A1 (en) * | 2015-11-24 | 2017-05-25 | Schneider Electric Industries Sas | Transfer switching equipment |
| CN207925334U (en) * | 2018-01-09 | 2018-09-28 | 施耐德电器工业公司 | Dual-power transfer switch |
| CN108735531A (en) * | 2018-06-26 | 2018-11-02 | 上海良信电器股份有限公司 | A kind of automatic change-over with overlapping neutral function |
| CN209434050U (en) * | 2019-04-16 | 2019-09-24 | 常熟开关制造有限公司(原常熟开关厂） | A kind of automatic change-over |
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| Publication number | Publication date |
|---|---|
| CN109872901B (en) | 2024-02-02 |
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