CN208747402U - Band-type brake control circuit and elevator device - Google Patents
Band-type brake control circuit and elevator device Download PDFInfo
- Publication number
- CN208747402U CN208747402U CN201820826321.0U CN201820826321U CN208747402U CN 208747402 U CN208747402 U CN 208747402U CN 201820826321 U CN201820826321 U CN 201820826321U CN 208747402 U CN208747402 U CN 208747402U
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- Prior art keywords
- band
- type brake
- subelement
- switch tube
- control unit
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- 238000002955 isolation Methods 0.000 claims description 38
- 230000003139 buffering effect Effects 0.000 claims description 34
- 238000004804 winding Methods 0.000 claims description 24
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000000872 buffer Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000001052 transient effect Effects 0.000 description 7
- 230000001629 suppression Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Elevator Control (AREA)
Abstract
The utility model provides a kind of band-type brake control circuit and elevator device, the band-type brake control circuit includes control unit and power cell, wherein: the power cell includes band-type brake current supply circuit and power switch tube, and the band-type brake current supply circuit is the band-type brake coil power supply when the power switch tube is connected, when the power switch tube disconnects, stopping is the band-type brake coil power supply；The input terminal of described control unit is connected to the end of safety return circuit, and the control level that the output end of described control unit is directly or indirectly connected to the control terminal of the power switch tube and output disconnects the power switch tube when voltage is zero in the safety return circuit.The utility model realizes band-type brake control by the on-off of power switch tube, can not only save band-type brake contactor, reduce volume, but also circuit is simple, safe and reliable.
Description
Technical field
The utility model relates to elevators fields, more specifically to a kind of band-type brake control circuit and elevator device.
Background technique
In the motor internal contracting brakes such as motor driven, elevator controlling braking occasion, the reliable turn-off of mechanical hatching gate is personal to guaranteeing
Safety has great importance.Currently, the power supply of band-type brake coil is mainly controlled using band-type brake contactor, so that motor
Band-type brake opens and closes.And the actuation and disconnection of band-type brake contactor, often there is the contact belt current open and close shape of band-type brake contactor
State is easy to bring band-type brake contactor arcing, so that band-type brake contactor be caused to damage.
For the contact belt current open and close for avoiding band-type brake contactor, Transient Suppression Diode can be increased in circuit
(Transient Voltage Suppressor, TVS), and continuous current circuit is provided by Transient Suppression Diode.Specifically, such as
Shown in Fig. 1, effectively inhibit band-type brake coil C by increasing Transient Suppression Diode TVS 3, TVS 4 that the response time is nanosecond
It is provided separately in the induced voltage of power loss instantaneously generated, and by the contactor power supply of band-type brake coil C and working power, so that not
Continuous impact, the puncture short for protecting rectifier to generate from overvoltage impact are generated in same point.But in the program, due to
Locking system often changes on off operating mode, and there are fatigue problems for Transient Suppression Diode, is easily damaged, while transient state inhibits two poles
The rated power of pipe is relatively high, will increase the cost of whole system.
In addition, band-type brake contactor can also be replaced to realize band-type brake control using transistor as switching device.Such as Fig. 2 institute
Show, the power supply of band-type brake coil 80 is controlled by control transistor switch 85.Defect existing for the program has: hardware aspect, increases
Added imput output circuit 81, logic control circuit 82 and driving circuit 83 etc., relative to using band-type brake contactor scheme,
Hardware cost is higher；And the program, in terms of software control timing, logic control is complicated.
As shown in figure 3, can also realize zero-current switching by the mechanical delay of band-type brake contactor K1 itself, but the program
There is certain limitation when in use.
Utility model content
The technical problem to be solved by the present invention is to for the control of above-mentioned elevator internal contracting brake is at high cost, control sequential is multiple
Miscellaneous problem provides a kind of new band-type brake control circuit and elevator device.
The technical solution that the utility model solves above-mentioned technical problem is to provide a kind of band-type brake control circuit, including control
Unit and power cell, in which: the power cell includes band-type brake current supply circuit and power switch tube, and the band-type brake is powered
Circuit is the band-type brake coil power supply when the power switch tube is connected, stops being described when the power switch tube disconnects
Band-type brake coil power supply；The input terminal of described control unit is connected to the end of safety return circuit, and the output end of described control unit
Be directly or indirectly connected to the control terminal of the power switch tube and in the safety return circuit voltage when being zero output make it is described
The control level that power switch tube disconnects.
In band-type brake control circuit described in the utility model, the power cell includes transformer；The transformer
Primary side winding connects the power switch tube and band-type brake current supply circuit, and the vice-side winding of the transformer connects the band-type brake line
Circle.
In band-type brake control circuit described in the utility model, the power switch tube includes that first switch tube and second open
Guan Guan, and the first switch tube and second switch are connected in series between the anode and cathode of the band-type brake current supply circuit,
The first end of the primary side winding of the transformer is connected to the company of the first switch tube and second switch via first capacitor
Contact, the second end of the primary side winding via the anode of band-type brake current supply circuit described in the second capacitance connection and the primary side around
Group second end via band-type brake current supply circuit described in third capacitance connection cathode.
In band-type brake control circuit described in the utility model, the power cell includes the first isolation subelement and second
Be isolated subelement, described control unit via it is described first isolation subelement be connected to the first switch tube control terminal and via
The second isolation subelement is connected to the control terminal of the second switch, and the secondary side connection of the first isolation subelement
The control of the second switch is connected to the control terminal of the first switch tube, the described second secondary side that subelement is isolated
The primary side at end, the first isolation subelement and the second isolation subelement is connected respectively to the output end of described control unit.
In band-type brake control circuit described in the utility model, the both ends of the vice-side winding of the transformer are respectively via one
A first diode is connected to the first end of the band-type brake coil, and the second end of the band-type brake coil is connected to the transformer
Vice-side winding centre tap；The vice-side winding of the transformer is connected with the second diode and absorption resistance, and described
Two diodes and absorption resistance are connected between the first end and second end of the band-type brake coil.
In band-type brake control circuit described in the utility model, described control unit includes the first buffering subelement；It is described
The enable end of first buffering subelement connects the end of the safety return circuit, and described control unit is in the first buffer sublayer list
The control level that output disconnects the power switch tube when enable end of member is low level.
In band-type brake control circuit described in the utility model, described control unit includes the second buffering subelement, described
Second buffering subelement is connected between the output end of the first buffering subelement and the output end of described control unit；It is described
The end of the enable end connection loop of the door lock of second buffering subelement, and described control unit is in the second buffering subelement
The control level that output disconnects the power switch tube when enable end is low level.
In band-type brake control circuit described in the utility model, described control unit includes third isolation subelement and the 4th
Subelement is isolated；The primary side of the third isolation subelement connects safety return circuit, and the secondary side of third isolation subelement connects
It is connected to the enable end of the first buffering subelement；The primary side of the 4th isolation subelement connects loop of the door lock, and described the
The secondary side of four isolation subelements is connected to the enable end of the second buffering subelement.
In band-type brake control circuit described in the utility model, described control unit includes microcontroller；The microcontroller
Device is connected to the control terminal of the first buffering subelement, and believes to the first buffering subelement output pulse width modulation
Number.
The utility model also provides a kind of elevator device, including band-type brake control circuit as described above.
The band-type brake control circuit and elevator device of the utility model, band-type brake control is realized by the on-off of power switch tube
System can not only save band-type brake contactor, reduce volume, but also circuit is simple, safe and reliable.
Detailed description of the invention
Fig. 1 is the schematic diagram of the existing band-type brake control circuit with Transient Suppression Diode；
Fig. 2 is the schematic diagram of the existing band-type brake control circuit powered using transistor controls；
Fig. 3 is the band-type brake control circuit signal that zero-current switching is realized by the mechanical delay of band-type brake contactor itself
Figure；
Fig. 4 is the schematic diagram of the utility model band-type brake control circuit embodiment；
Fig. 5 is the schematic diagram of power cell embodiment in the utility model band-type brake control circuit；
When Fig. 6 in the utility model band-type brake control circuit control unit embodiment schematic diagram；
Fig. 7 is the schematic diagram of the utility model band-type brake control circuit control sequential.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in figure 4, being the schematic diagram of the utility model band-type brake control circuit embodiment, which can be applied
In elevator device, band-type brake control is realized.Band-type brake control circuit in the present embodiment includes control unit 1 and power cell 2, and
The input terminal of above-mentioned control unit 1 is connected to the end of safety return circuit 3, and the output end of power cell 2 is then connected to band-type brake line
Circle 4, to control band-type brake.Specifically, above-mentioned control unit 1 and power cell 2 can be integrated into electric machine controller.
Power cell 2 may include band-type brake current supply circuit 21 and power switch tube 22, and above-mentioned band-type brake current supply circuit 21 is in power
Switching tube 22 is the power supply of band-type brake coil 4 when being connected, stops being that band-type brake coil 4 is powered when power switch tube 22 disconnects.Specifically,
Above-mentioned band-type brake current supply circuit 21 can connect external power supply, and be powered by external power supply.Elevator is realized when band-type brake coil 4 is powered
It declutches, realizes elevator internal contracting brake in band-type brake 4 power loss of coil.The input terminal of control unit 1 is connected to the end of safety return circuit 3, and
The control level that output disconnects power switch tube 22 when the output end of the control unit 1 voltage in safety return circuit 3 is zero.On
State the safety switch in safety return circuit 3 including multiple series connections.In any safety switch exception, safety return circuit 3 is disconnected, i.e.,
The input terminal of control unit 1 is zero, so that control unit 1 exports the control level for disconnecting power switch tube to power cell 2,
Band-type brake current supply circuit 21 does not export supply voltage to band-type brake coil 4, and the brake of final elevator keeps band-type brake state.
Above-mentioned band-type brake control circuit realizes band-type brake coil 4 by the on-off of the power switch tube 22 in power cell 2
Power supply control, and an input terminal of control unit 1 is connected to the end of safety return circuit 3, so as to abnormal in safety return circuit 3
Shi Shixian elevator internal contracting brake.Due to eliminating band-type brake contactor, the volume of above-mentioned band-type brake control circuit can be substantially reduced, and circuit
Structure is relatively easy.
As shown in figure 5, above-mentioned power cell 2 may include transformer T1, the primary side winding connection power of transformer T1 is opened
(both ends of the band-type brake current supply circuit 21 can be connected respectively to the positive V+ of external power supply power supply for pass pipe 22 and band-type brake current supply circuit 21
With cathode V-, power switch tube is then connected in series in band-type brake current supply circuit 21)；The vice-side winding of transformer T1 then connects band-type brake
Coil 4.When power switch tube 22 is connected, the primary side of transformer T1 is powered, so that band-type brake coil 4 is also powered；In power switch
When pipe 22 disconnects, the primary side power loss of transformer T1, thus the also power loss of band-type brake coil 4.
For the safety for improving band-type brake control, above-mentioned power switch tube specifically may include first switch tube S1 and second switch
Pipe S2, and first switch tube S1 and second switch S2 are connected in series in band-type brake current supply circuit, that is, are connected in series in external confession
Between the positive V+ and cathode V- of power supply；The first end of the primary side winding of transformer T1 is connected to first via first capacitor C1
The tie point of switching tube S1 and second switch S2, the second end of primary side winding is via the second capacitor C2 connection external power supply power supply
Positive V+ and the primary side winding second end via third capacitor C3 connection external power supply power supply cathode V-.In this way,
When any of one switching tube S1 and second switch S2 is disconnected, the primary side power loss of transformer T1, so that band-type brake coil 4 also loses
Electricity.
Particularly, power cell 2 includes the first isolation subelement 23 and second is isolated subelement 24, and the first insulator list
Member 23 it is secondary while the control terminal for being connected to first switch tube S1, second isolation subelement 24 it is secondary while be connected to second switch S2
Control terminal；The primary side of first isolation subelement 23 and the second isolation subelement 24 is connected respectively to the output end of control unit 1.
Optocoupler or other isolation circuits can be used in above-mentioned first isolation subelement 23 and the second isolation subelement 24, to guarantee that first opens
Close pipe S1 and second switch S2 control terminal voltage in safe range.
The both ends of the vice-side winding of transformer T1 can be connected to band-type brake coil 4 via first diode D1, D2 respectively
First end, and the second end of band-type brake coil 4 is connected to the centre tap of the vice-side winding of transformer T1.The secondary side of transformer T1
Winding is connected with third switching tube S3, for realizing mechanical hatching gate control.The vice-side winding of transformer T1 is connected with the two or two pole
Pipe D3 and absorption resistance R, and the second diode D3 and absorption resistance R are connected between the first end and second end of band-type brake coil 4.
Above-mentioned second diode D3 and absorption resistance R can absorb the energy in band-type brake coil 4 in transformer T1 primary side power loss, realize fast
Fast band-type brake.
As shown in fig. 6, control unit 1 includes the first buffering subelement 11, the enable end EN1 of the first buffering subelement 11
The end (such as passing through isolated part) of safety return circuit is connected, and control unit 1 is in the enable end EN1 of the first buffering subelement 11
To export the control level for disconnecting power switch tube when low level.
The control unit 1 can also make elevator keep band-type brake in loop of the door lock exception, and control unit 1 includes second slow at this time
Punching pin unit 12.The second buffering subelement 12 is connected to the output end of the first buffering subelement 11 and the output of control unit 1
Between end, specifically, the input terminal of the second buffering subelement 12 is connected to the output end of the first buffering subelement 11, and this second
The output end of buffering subelement 12 is connected to the primary side of the first isolation subelement 23 and the primary side of the second isolation subelement 24.Second
The enable end EN2 of buffering subelement 12 is connected to the end (such as passing through isolated part) of loop of the door lock, and control unit 1 is the
The control level that output disconnects power switch tube when the enable end EN2 of two buffering subelements 12 is low level.As long as i.e. safety
When any of circuit 3 and loop of the door lock are abnormal, control unit 1 all exports the control level for disconnecting power switch tube, thus
The brake of elevator is set to keep band-type brake state.
Isolating device in above-mentioned control unit 1 specifically may include third isolation subelement 13 and the 4th isolation subelement
14, wherein the primary side of third isolation subelement 13 connects safety return circuit, and the secondary side of third isolation subelement 13 is connected to first
Buffer the enable end EN1 of subelement 11；The primary side of 4th isolation subelement 14 connects loop of the door lock, and the 4th isolation subelement 14
Secondary side be connected to the enable end EN2 of the second buffering subelement 12.Above-mentioned third isolation subelement 13 and the 4th isolation subelement
14 specifically can be used optocoupler.
Control unit 1 further includes microcontroller 15, which is connected to the control terminal of the first buffering subelement 11,
And to the first buffering 11 output pulse width modulated signal of subelement, so that it is corresponding defeated to generate the first buffering subelement 11
Out.By the pulse width modulating signal of microcontroller 15, elevator system can be realized in safety return circuit 3 and normal loop of the door lock
The control of declutching of dynamic device, to make lift car upstream or downstream.
In above-mentioned band-type brake control circuit, as shown in Figure 7, it is assumed that the end of safety return circuit 3 and the end of loop of the door lock are anti-
Feedback signal SBC fb, SBC_fb are formed after phase, low level is effective；Vref is the closed-loop reference of the output voltage of control unit 1
Voltage；Vout is the voltage of A point in Fig. 5；Io is the electric current in Fig. 5 at B.Within t0~t1 time, band-type brake swashs by force output；In t1
In~t3 the time, band-type brake maintains output.By the Fig. 7 it is found that above-mentioned band-type brake control circuit is in terms of control sequential, logic control letter
It is single.
The utility model also provides a kind of elevator device, which includes band-type brake control circuit as described above, should
Band-type brake control circuit specifically can be integrated into electric life controller, can save band-type brake contactor, reduce volume.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (10)
1. a kind of band-type brake control circuit, which is characterized in that including control unit and power cell, in which: the power cell
Including band-type brake current supply circuit and power switch tube, and the band-type brake current supply circuit is band-type brake line when the power switch tube is connected
Circle power supply stops being the band-type brake coil power supply when the power switch tube disconnects；The input terminal of described control unit connects
The control terminal of the power switch tube, and described control unit are directly or indirectly connected to the end of safety return circuit, output end
The control level that output disconnects the power switch tube when voltage is zero in the safety return circuit.
2. band-type brake control circuit according to claim 1, which is characterized in that the power cell includes transformer；It is described
The primary side winding of transformer connects the power switch tube and band-type brake current supply circuit, and the vice-side winding of the transformer connects institute
State band-type brake coil.
3. band-type brake control circuit according to claim 2, which is characterized in that the power switch tube includes first switch tube
And second switch, and the first switch tube and second switch are connected in series in the positive and negative of the band-type brake current supply circuit
Between pole, the first end of the primary side winding of the transformer is connected to the first switch tube and second switch via first capacitor
The tie point of pipe, the second end of the primary side winding is via the anode of band-type brake current supply circuit described in the second capacitance connection and described
The second end of primary side winding via band-type brake current supply circuit described in third capacitance connection cathode.
4. band-type brake control circuit according to claim 3, which is characterized in that the power cell includes the first insulator list
Member and the second isolation subelement, described control unit are connected to the first switch tube via the first isolation subelement and control
End, and the control terminal that subelement is connected to the second switch, and the first isolation subelement is isolated via described second
It is secondary in the control terminal for being connected to the first switch tube, it is described second isolation subelement it is secondary while be connected to the second switch
The primary side of the control terminal of pipe, the first isolation subelement and the second isolation subelement is connected respectively to the defeated of described control unit
Outlet.
5. band-type brake control circuit according to claim 2, which is characterized in that the both ends of the vice-side winding of the transformer point
The first end of the band-type brake coil is not connected to via a first diode, and the second end of the band-type brake coil is connected to institute
State the centre tap of the vice-side winding of transformer；The vice-side winding of the transformer is connected with the second diode and absorption resistance,
And second diode and absorption resistance are connected between the first end and second end of the band-type brake coil.
6. band-type brake control circuit according to claim 1, which is characterized in that described control unit includes the first buffer sublayer list
Member；The enable end of the first buffering subelement connects the end of the safety return circuit, and described control unit is described first
The control level that output disconnects the power switch tube when enable end of buffering subelement is low level.
7. band-type brake control circuit according to claim 6, which is characterized in that described control unit includes the second buffer sublayer list
Member, it is described second buffering subelement be connected to it is described first buffering subelement output end and described control unit output end it
Between；The end of the enable end connection loop of the door lock of the second buffering subelement, and described control unit is in second buffering
The control level that output disconnects the power switch tube when enable end of subelement is low level.
8. band-type brake control circuit according to claim 7, which is characterized in that described control unit includes third insulator list
Member and the 4th isolation subelement；The primary side of the third isolation subelement connects safety return circuit, and subelement is isolated in the third
Secondary side be connected to it is described first buffering subelement enable end；The primary side of the 4th isolation subelement connects loop of the door lock,
And the secondary side of the 4th isolation subelement is connected to the enable end of the second buffering subelement.
9. band-type brake control circuit according to claim 7, which is characterized in that described control unit includes microcontroller；Institute
The control terminal that microcontroller is connected to the first buffering subelement is stated, and buffers subelement output pulse width to described first
Modulated signal.
10. a kind of elevator device, which is characterized in that including band-type brake control circuit as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820826321.0U CN208747402U (en) | 2018-05-30 | 2018-05-30 | Band-type brake control circuit and elevator device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820826321.0U CN208747402U (en) | 2018-05-30 | 2018-05-30 | Band-type brake control circuit and elevator device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208747402U true CN208747402U (en) | 2019-04-16 |
Family
ID=66052575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820826321.0U Withdrawn - After Issue CN208747402U (en) | 2018-05-30 | 2018-05-30 | Band-type brake control circuit and elevator device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208747402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821044A (en) * | 2018-05-30 | 2018-11-16 | 苏州汇川技术有限公司 | Band-type brake control circuit and elevator device |
-
2018
- 2018-05-30 CN CN201820826321.0U patent/CN208747402U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821044A (en) * | 2018-05-30 | 2018-11-16 | 苏州汇川技术有限公司 | Band-type brake control circuit and elevator device |
| CN108821044B (en) * | 2018-05-30 | 2024-01-26 | 苏州汇川技术有限公司 | Band-type brake control circuit and elevator system |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190416 Effective date of abandoning: 20240126 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190416 Effective date of abandoning: 20240126 |