CN206742125U - A kind of three-phase apparatus for fast switching suitable for high current - Google Patents
A kind of three-phase apparatus for fast switching suitable for high current Download PDFInfo
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- CN206742125U CN206742125U CN201720642951.8U CN201720642951U CN206742125U CN 206742125 U CN206742125 U CN 206742125U CN 201720642951 U CN201720642951 U CN 201720642951U CN 206742125 U CN206742125 U CN 206742125U
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- contact
- high current
- power transmission
- transmission shaft
- main shaft
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Abstract
The utility model discloses a kind of three-phase apparatus for fast switching suitable for high current, the switching device includes switching mechanism, and the switching mechanism side is connected with actuating unit；The switching mechanism includes shell body, base, connecting plate, power transmission shaft；The shell body is arranged on the outside of the switching mechanism, and shell body one end is provided with the base；Arc extinguishing grid pieces are evenly distributed with the base, connecting plate is provided with the inside of base, contact is fixedly connected with the connecting plate；The power transmission shaft is arranged on inside the shell body, and main shaft is provided with the outside of power transmission shaft；On the main shaft contact is connected with positioned at the contact side.The utility model can be switched fast between three-phase heavy current circuit, and the line interruption time is reduced, and can be avoided because breaking arc causes the possibility of short circuit and program error to cause the situation of phase fault, and contact reliability is strong, service life length.
Description
Technical field
It the utility model is related to low-voltage electrical technical field, and in particular to a kind of three-phase suitable for high current is switched fast
Device.
Background technology
It is usually to control uniline division for the device that high current is switched fast in current low-voltage electrical industry
Common relay, also there is the single-pole double-throw relay for two alternate switchings, can but there is no an independent device
To realize the function being switched fast between three-phase heavy current circuit.
Currently, the three-phase for high current is switched fast the main combination using common relay or single-pole double-throw relay
And realize.Three common relays are wherein used, control disjunction, the closing order of three relays respectively by program, so as to
Realize purpose of the circuit in three alternate switchings.The advantages of this method, is technology maturation, cheap, and shortcoming is that switch logic is answered
It is miscellaneous, switching time length, no mechanism interlocking, no arc-control device.Using three single-pole double-throw relays, controlled respectively by program
The running order of three relays, so as to realize purpose of the circuit in three alternate switchings.The advantages of this method, is technology more
Ripe and have mechanism interlocking to prevent short circuit caused by switch logic, shortcoming is switch logic complexity, switching time length, into
This higher, no arc-control device.
Utility model content
The purpose of this utility model is to provide a kind of three-phase apparatus for fast switching suitable for high current, can be in three-phase
It is switched fast between heavy current circuit, the line interruption time is reduced；Switching device possesses arc-suppression function, avoids because breaking arc draws
Play the possibility of short circuit；Be present mechanism interlocking in device itself, avoid because program error causes the situation of phase fault；Other device is also
The contact end pressure and contact over travel consistent with equal current class breaker is provided, ensure switching device contact reliability and
Mechanical life.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of three-phase suitable for high current is quickly cut
Changing device, the switching device include switching mechanism, and the switching mechanism side is connected with actuating unit；The switching mechanism bag
Include shell body, base, connecting plate, power transmission shaft；The shell body is arranged on the outside of the switching mechanism, and shell body one end is provided with institute
State base；Arc extinguishing grid pieces are evenly distributed with the base, connecting plate is provided with the inside of base, is fixedly connected with the connecting plate
Contact；The power transmission shaft is arranged on inside the shell body, and main shaft is provided with the outside of power transmission shaft；It is located at the contact on the main shaft
Side is connected with contact.
A kind of three-phase apparatus for fast switching suitable for high current as described above, the contact are provided with 3 groups, and every group of contact is set
There are 2,3 groups of contacts are evenly distributed on the base.Contact is fixed, for the contact realized and selected, so that
The circuit of realization device is connected.
A kind of three-phase apparatus for fast switching suitable for high current as described above, the contact are provided with 2 groups, 2 groups of contacts pair
Title is distributed on the main shaft.Contact follows main axis, realizes disjunction and the closure of contact and contact.
A kind of three-phase apparatus for fast switching suitable for high current as described above, the main shaft periphery are arranged mounting flange,
Reed is provided between mounting flange and main shaft, the reed is in annular.Mounting flange is that device inner structure provides a supporting role,
Electric action is also acted as simultaneously, and reed ensures the good contact of high current rotary body main shaft and mounting flange.
A kind of three-phase apparatus for fast switching suitable for high current as described above, the mounting flange are provided with annular groove, institute
Reed is stated to be located in the annular groove.It is further ensured that the good contact of high current rotary body main shaft and mounting flange.
A kind of three-phase apparatus for fast switching suitable for high current as described above, mounting flange periphery sheathed spring,
The spring is in compressive state, and spring is used to make to compress between contact and contact.Spring provides contact end pressure, the end of contact
Pressure acts on the pressure on contact after referring to contact closure completely, and end pressure is determined by the final decrement of touch spring, it
Contact resistance when can make the contact be in closure state keeps lower value, ensures contact and the reliable contacts of contact.
A kind of three-phase apparatus for fast switching suitable for high current as described above, the actuating unit use stepper motor,
Power transmission shaft described in stepper motor power output axis connection.The stepper motor is connected with programmable logic controller (PLC), described to compile
Journey logic controller provides control signal for stepper motor, and programmable logic controller (PLC) is used for the rotation for controlling power transmission shaft, transmission
Axle drives main shaft to realize the rotation of contact, and contact of the contact rotation realization with contact is with separating.
A kind of three-phase apparatus for fast switching suitable for high current as described above, the switching device are provided with mutual interlocking gear,
Mutual interlocking gear uses mechanical interlock switch, and the mutual interlocking gear prevents commutation moment or the separated contactor of program error without going out
Arc causes phase fault.Mechanical interlock switch is to realize to interlock by mechanical part, for example two switches can not close simultaneously, can
To pass through mechanical lever so that when a switch closes, another switch is blocked by machinery and can not closed, mechanical interlocked reliability
Height, belong to prior art.
The utility model method has the following advantages that：Switching device is driven to rotate special angle so as to reality by actuating unit
Existing contact, contact system disjunction and closure；Switching device realizes arc-suppression function by arc extinguishing grid pieces, avoids because breaking arc causes
The possibility of short circuit；Be present mechanism interlocking in device itself, avoid because program error causes the situation of phase fault；Other device also carries
For the contact end pressure and contact over travel consistent with equal current class breaker, ensure the contact reliability and machine of switching device
The tool life-span.
Brief description of the drawings
Fig. 1 is applied to the three-phase apparatus for fast switching external structure schematic diagram of high current；
Fig. 2 is applied to the three-phase apparatus for fast switching internal structure schematic diagram of high current；
Fig. 3 is applied to the three-phase apparatus for fast switching contact and contact position structural representation of high current.
Embodiment
Following examples are used to illustrate the utility model, but are not limited to the scope of the utility model.
As shown in Figure 1 and Figure 2, a kind of three-phase apparatus for fast switching suitable for high current, the switching device include switching
Mechanism 1, the side of switching mechanism 1 are connected with actuating unit 2；The switching mechanism 1 includes shell body 13, base 5, connecting plate
4th, power transmission shaft 10；The shell body 13 is arranged on the outside of switching mechanism 1, and the one end of shell body 13 is provided with the base 5；It is described
Arc extinguishing grid pieces 3 are evenly distributed with base 5, the inner side of base 5 is provided with connecting plate 4, contact 6 is fixedly connected with the connecting plate 4；
The power transmission shaft 10 is arranged on inside the shell body 13, and the outside of power transmission shaft 10 is provided with main shaft 8；Positioned at described on the main shaft 8
The side of contact 6 is connected with contact 7.
The contact 6 is provided with 3 groups, and every group of contact 6 is provided with 2, and 3 groups of contacts 6 are evenly distributed on the base 5.Contact 6
It is fixed, contact with the contact 7 selected for realizing, connected so as to the circuit of realization device.
The contact 7 is provided with 2 groups, and 2 groups of contacts 7 are symmetrically distributed on the main shaft 8.Contact 7 follows main shaft 8 to rotate, real
Disjunction and closure of the existing contact 7 with contact 6.
The periphery of main shaft 8 is arranged mounting flange 12, and reed 11, the reed are provided between mounting flange 12 and main shaft 8
11 be in annular.Mounting flange 12 is that device inner structure provides a supporting role, while also acts as electric action, and reed 11 ensures greatly
The good contact of electric current rotary body main shaft 8 and mounting flange 12.
The mounting flange 12 is provided with annular groove, and the reed 11 is located in the annular groove.It is further ensured that high current is revolved
Turn the good contact of main shaft 8 and mounting flange 12.
The peripheral sheathed spring 9 of mounting flange 12, the spring 9 are in compressive state, and spring 9 is used to make the He of contact 7
Compressed between contact 6.Spring 9 provides the end pressure of contact 7, and the end pressure of contact refers to that contact is acted on contact after closing completely
Pressure, end pressure determined by the final decrement of touch spring, and contact resistance when it can make the contact be in closure state is protected
Lower value is held, ensures contact 7 and the reliable contacts of contact 6.
The actuating unit 2 uses stepper motor, power transmission shaft 10 described in stepper motor power output axis connection.The stepping
Motor connection has programmable logic controller (PLC), and the programmable logic controller (PLC) provides control signal for stepper motor, may be programmed
Logic controller is used for the rotation for controlling power transmission shaft 10, and the drive main shaft 8 of power transmission shaft 10 realizes the rotation of contact 7, and contact 7 rotates reality
Now the contact with contact 6 is with separating.
The switching device is provided with mutual interlocking gear, and mutual interlocking gear uses mechanical interlock switch, and the mutual interlocking gear prevents from changing
Phase moment or the separated contactor of program error cause phase fault without arc extinguishing.
As shown in figure 3, in the present embodiment, current state is that contact 71 contacts with contact 61, if necessary to contact 7 and
Contact 62 contacts, and most fast scheme is that actuating unit 2 turns clockwise 60 °, then makes contact 72 by power transmission shaft 10, main shaft 8
Contacted with contact 62.Using stepper motor stepping angle as 1.8 °, driver pulse frequency is 2400p/s, is calculated without subdivision,
60 ° of rotation needs used time 60/ (1.8*2400)=0.014s.Switch circuit if necessary to special time, then adjust stepper motor
The pulse frequency of driver.
The above-mentioned handover operation process that contact 62 is switched to from contact 61, while suitable for switching to contact from contact 62
63rd, the handover operation of contact 61 is switched to from contact 63.For switching to contact 63 from contact 61, switching to contact from contact 62
61 and the handover operation of contact 62 is switched to from contact 63, its principle is consistent with above-mentioned switching, simply the rotation of actuating unit 2
By being changed to clockwise counterclockwise.
The technical scheme provided from above the utility model embodiment, the utility model embodiment pass through power
Mechanism, under the control of programmable logic controller (PLC), switching device rotation special angle is driven to realize contact system disjunction
And closure.The arc extinguishing grid pieces of switching device possess arc-suppression function, avoid because breaking arc causes the possibility of short circuit, while device is certainly
Be present mechanism interlocking in body, avoid because program error causes the situation of phase fault, device also provides and equal current class in addition
Breaker consistent contact end pressure and contact over travel, ensure contact reliability and the mechanical life of switching device.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, the these modifications or improvements on the basis of without departing from the utility model spirit, belonging to the utility model will
Seek the scope of protection.
Claims (9)
1. a kind of three-phase apparatus for fast switching suitable for high current, the switching device includes switching mechanism, the switching machine
Structure side is connected with actuating unit；It is characterized in that：The switching mechanism includes shell body, base, connecting plate and power transmission shaft；Institute
State shell body to be arranged on the outside of the switching mechanism, shell body one end is provided with the base；It is evenly distributed with and goes out on the base
Arc grid, base inner side are provided with connecting plate, contact are fixedly connected with the connecting plate；The power transmission shaft is arranged on the shell
Internal portion, power transmission shaft outside are provided with main shaft；On the main shaft contact is connected with positioned at the contact side.
A kind of 2. three-phase apparatus for fast switching suitable for high current according to claim 1, it is characterised in that：The contact
Provided with 3 groups, every group of contact is provided with 2, and 3 groups of contacts are evenly distributed on the base.
A kind of 3. three-phase apparatus for fast switching suitable for high current according to claim 1 or claim 2, it is characterised in that：It is described
Contact is provided with 2 groups, and 2 groups of contacts are symmetrically distributed on the main shaft.
A kind of 4. three-phase apparatus for fast switching suitable for high current according to claim 1, it is characterised in that：The main shaft
Periphery is arranged mounting flange, and reed is provided between mounting flange and main shaft, and the reed is in annular.
A kind of 5. three-phase apparatus for fast switching suitable for high current according to claim 4, it is characterised in that：The fixation
Flange is provided with annular groove, and the reed is located in the annular groove.
A kind of 6. three-phase apparatus for fast switching suitable for high current according to claim 4, it is characterised in that：The fixation
Flange periphery sheathed spring, the spring are in compressive state, and spring is used to make to compress between contact and contact.
A kind of 7. three-phase apparatus for fast switching suitable for high current according to claim 1, it is characterised in that：The power
Mechanism uses stepper motor, power transmission shaft described in stepper motor power output axis connection.
A kind of 8. three-phase apparatus for fast switching suitable for high current according to claim 7, it is characterised in that：The stepping
Motor connection has programmable logic controller (PLC), and the programmable logic controller (PLC) provides control signal for stepper motor, may be programmed
Logic controller is used for the rotation for controlling power transmission shaft, and power transmission shaft drives main shaft to realize the rotation of contact, and contact rotation realization is with touching
The disjunction of point and closure.
A kind of 9. three-phase apparatus for fast switching suitable for high current according to claim 1, it is characterised in that：The switching
Device is provided with mutual interlocking gear, and mutual interlocking gear uses mechanical interlock switch of the prior art, and the mutual interlocking gear prevents commutation wink
Between or the separated contactor of program error cause phase fault without arc extinguishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720642951.8U CN206742125U (en) | 2017-06-05 | 2017-06-05 | A kind of three-phase apparatus for fast switching suitable for high current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720642951.8U CN206742125U (en) | 2017-06-05 | 2017-06-05 | A kind of three-phase apparatus for fast switching suitable for high current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206742125U true CN206742125U (en) | 2017-12-12 |
Family
ID=60568711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720642951.8U Expired - Fee Related CN206742125U (en) | 2017-06-05 | 2017-06-05 | A kind of three-phase apparatus for fast switching suitable for high current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206742125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068466A (en) * | 2017-06-05 | 2017-08-18 | 泰豪科技股份有限公司 | A kind of three-phase apparatus for fast switching suitable for high current |
| CN116600069A (en) * | 2023-07-17 | 2023-08-15 | 北京兆科恒兴科技有限公司 | Video signal switching device and transmission switching method thereof |
-
2017
- 2017-06-05 CN CN201720642951.8U patent/CN206742125U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068466A (en) * | 2017-06-05 | 2017-08-18 | 泰豪科技股份有限公司 | A kind of three-phase apparatus for fast switching suitable for high current |
| CN116600069A (en) * | 2023-07-17 | 2023-08-15 | 北京兆科恒兴科技有限公司 | Video signal switching device and transmission switching method thereof |
| CN116600069B (en) * | 2023-07-17 | 2023-10-13 | 北京兆科恒兴科技有限公司 | Video signal switching device and transmission switching method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20190605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |