CN202558543U - Control circuit of elevator brake - Google Patents
Control circuit of elevator brake Download PDFInfo
- Publication number
- CN202558543U CN202558543U CN201220234169XU CN201220234169U CN202558543U CN 202558543 U CN202558543 U CN 202558543U CN 201220234169X U CN201220234169X U CN 201220234169XU CN 201220234169 U CN201220234169 U CN 201220234169U CN 202558543 U CN202558543 U CN 202558543U
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- brake
- elevator
- switch
- braking
- control circuit
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- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011022 operating instruction Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a control circuit of a quick low-noise brake and belongs to the technical field of elevators. The control circuit is used for a permanent magnet synchronous tractor and comprises a transformer, a safety switch, a band-type brake and a brake coil. The input end or the output end of the brake coil is connected with an emergency stop switch in series. Due to the fact that the whole circuit control is not changed, and only one emergency stop switch is added on the control circuit and is completely controlled by an elevator control system, the emergency stop switch does not act when an elevator runs normally and acts when the elevator is in emergency braking. Due to the fact that elevator emergency braking happens less, damage to the brake coil can be ignored. Due to the emergency stop brake, the braking of the brake can be divided into two kinds, one is the braking in normal running of the elevator, and the other is the braking in emergency condition of the elevator. The control mode can greatly reduce braking noise of the brake and enables braking of the elevator to be safer.
Description
Technical field
The utility model relate to a kind of fast, the control circuit of low noise drg, belong to the elevator technology field, be used for permanent magnetic synchronous traction machine.
Background technology
Existing drg mode principle such as Fig. 1 or shown in Figure 2; The principle of work of Fig. 1: elevator control cabinet provides the voltage that is fit to drg through voltage transformer; Convert direct current (DC) to through rectifier bridge afterwards; The effect of band-type brake K switch 2 is that the control brake device opens band-type brake or cuts out band-type brake; Economic variable resistance R1 and economy resistance K switch 1 are to reduce the input voltage of brake coil, and backward diode D and resistance R are the remaining electric currents of coil that when the drg band-type brake, releases the brake, and K3 is the series connected safety switch in the brake control circuit of needs in the elevator.The principle of work of Fig. 2: elevator control cabinet provides the voltage that is fit to drg through voltage transformer; After voltage gets into commutation controller; Be converted into the direct current (DC) that to supply with brake coil; Band-type brake K switch 1 is that the control brake device opens band-type brake or cuts out band-type brake, and safety switch K3 needs series connected switch in the brake control circuit in the elevator.Drg is as the safety component of elevator, so the retro-speed of drg will satisfy the urgent stop of elevator, drg is as the parts of elevator simultaneously; Brake noise can not influence user's normal life again, and in existing brake control circuit, the retro-speed of drg and brake noise all have only a kind of; And both are conflicting; The faster noise of retro-speed is big more, and the slower noise of retro-speed is more little, can only be with the design-calculated drg when retro-speed satisfies safety requirements to the problems referred to above; The reduction that noise is tried one's best, but such drg has increased design, has made the difficulty with maintenance.
Summary of the invention
The utility model purpose just provides a kind of control circuit of the elevator brake that can realize in emergency circumstances separating with the following two kinds of brake mode of normal circumstances.
The utility model purpose is to realize like this.
A kind of control circuit of elevator brake comprises voltage transformer, safety switch, band-type brake switch and brake coil, and the input end or the mouth of said brake coil are in series with emergency stop switch.
Technique scheme also can be done following further perfect.
A kind of improved mode is that said Secondary winding of transformer two mouths connect rectifying circuit respectively; Said safety switch, band-type brake switch and brake coil are connected between the positive pole and negative pole of rectifying circuit; Be parallel with backward diode between the input end of said brake coil and the mouth; The mouth of backward diode is towards the positive pole of rectifying circuit; Emergency stop switch and backward diode block brake coil current jointly when elevator emergency brake, also be in series with economic variable resistance between the positive pole of said rectifying circuit and the negative pole, are parallel with the economy resistance switch between the economic variable-resistance two ends.
Another kind of improved mode is to be in series with commutation controller between said Secondary winding of transformer two mouths; Safety switch, band-type brake switch are connected between secondary winding two mouths; Brake coil and emergency stop switch are connected between the positive pole and negative pole of commutation controller, and emergency stop switch and backward diode block brake coil current jointly when elevator emergency brake.Said commutation controller includes rectifying circuit, reduction voltage circuit and mu balanced circuit.
When the drg band-type brake; Because brake coil is perceptual components and parts, if, can produce very big voltage between the lock of coil two ends and coil with brake coil moment disconnection; Drg long-term work meeting damages brake coil; So must have an oppositely directed diode in the control circuit and discharge resistance, backward diode discharges remaining electric current in the brake coil with the effect that discharges resistance exactly, and the release rate of electric current has just determined drg band-type brake speed and band-type brake noise; In circuit, increase an emergency stop switch, emergency stop switch is exactly the size of the release resistance in the release resistance/commutation controller in the control circuit.Its special feature is: when elevator needed snap catch, the resistance that discharges resistance through emergency stop switch control was maximum, can make the drg fast speed with elevator brake like this; When elevator was in normal operation, the resistance that discharges resistance through emergency stop switch control was minimum, and the brake noise of drg is reduced.
Because integrated circuit control does not change, and has just increased an emergency stop switch at control circuit, this switch is controlled by apparatus for controlling elevator fully; Elevator is when normal operation; Emergency stop switch is failure to actuate, and when elevator is in when needing emergency braking, emergency stop switch just can move.So because elevator emergency brake belongs to few cases and can ignore the damage of brake coil.But because the existence of emergency stop switch; Can the drg braking be divided into two kinds, a kind of is elevator braking just often, the braking when another kind is in emergency for elevator; This mode not only can reduce the drg brake noise greatly, can make the stop of elevator safer again.
Description of drawings
Fig. 1 is the schematic circuit diagram of existing elevator brake.
Fig. 2 is another schematic circuit diagram of existing elevator brake.
Fig. 3 is the schematic circuit diagram of embodiment 1.
Fig. 4 is the schematic circuit diagram of embodiment 2.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment 1; In conjunction with Fig. 3; A kind of control circuit of elevator brake; Comprise voltage transformer, safety switch K3, band-type brake K switch 2, economic variable resistance R1, emergency stop switch K5 and brake coil L, voltage transformer comprises primary winding AC1 and secondary winding AC2 again, and secondary winding two mouths connect rectifying circuit 1 respectively; Safety switch K3, band-type brake K switch 2, economic variable resistance R1, emergency stop switch K5 and brake coil L are connected between the positive pole and negative pole of rectifying circuit 1; Be parallel with backward diode D between the input end of said brake coil L and the mouth, the mouth of backward diode D is towards the positive pole of rectifying circuit 1, and emergency stop switch K5 is located at brake coil L input end.Emergency stop switch K5 and backward diode D block brake coil L electric current jointly when elevator emergency brake.Be parallel with economy resistance K switch 1 between the two ends of economic variable resistance R1.It all is closed that elevator emergency stop switch K5 and safe shape when the normal standby state are closed K3, and when elevator is received operating instruction, band-type brake K switch 2 is closed simultaneously with economy resistance K switch 1; Drg is normally opened a sluice gate through the too high voltages excitation; Open a sluice gate the economic resistance switch K1 in back and break off, drg gets into the situation of keeping, after elevator arrives the purpose floor; Band-type brake K switch 2 is broken off; Electric current in the brake coil L discharges the back band-type brake through backward diode D, and elevator normally stops, and the band-type brake speed of drg is slow at this moment, noise is low; When elevator is in emergency, need the drg emergency braking, this moment, apparatus for controlling elevator can break off emergency stop switch K5 moment; Brake coil L moment breaks off, since brake coil L open circuit, drg moment band-type brake; This moment, the retro-speed of drg was fast; Noise is big, but because elevator goes wrong, this is in the noise of drg is not considered in.This invention is that the braking situation with drg is divided into two kinds, and a kind of is elevator braking just often, and this moment, the drg retro-speed was slow, and noise is low; Another kind of situation be elevator when emergency, the drg retro-speed is fast, noise is big.Drg braking situation is divided into two kinds not only can reduces the drg brake noise greatly, can make the stop of elevator safer again.
Embodiment 2; In conjunction with Fig. 4, a kind of control circuit of elevator brake comprises voltage transformer, safety switch K3, band-type brake K switch 2, emergency stop switch K5 and brake coil L; Voltage transformer comprises primary winding AC1 and secondary winding AC2 again; The commutation controller 1 that is connected in series between secondary winding AC2 two mouths, safety switch K3, band-type brake K switch 2 are connected between secondary winding AC2 two mouths, and brake coil L and emergency stop switch K5 are connected between the positive pole and negative pole of commutation controller 1.Said commutation controller (for prior art) includes rectifying circuit, reduction voltage circuit and mu balanced circuit.Elevator emergency stop switch K5 and safety switch K3 when the normal standby state are closed, when elevator is received operating instruction, and band-type brake K switch 2 closures; 1 rectification changes into drg acceptable direct current (DC) to alternating current through commutation controller, and drg is opened, kept, after elevator arrives the purpose floor; Band-type brake K switch 2 is broken off; The interior electric current of brake coil L discharges circuit through commutation controller 1 and discharges the back band-type brake, and elevator normally stops, and the band-type brake speed of drg is slow at this moment, noise is low; When elevator is in emergency, need drg band-type brake at once, this moment, apparatus for controlling elevator can break off emergency stop switch K5 moment; Brake coil L moment breaks off, since the brake coil open circuit, drg moment band-type brake; This moment, the retro-speed of drg was fast; Noise is big, but because problem has appearred in elevator, this is in the noise of drg is not considered in.This invention is that the braking situation with drg is divided into two kinds, and a kind of is elevator braking just often, this moment the drg retro-speed slow, noise is low; Another kind of situation be elevator when emergency, the drg retro-speed is fast, noise is big.Drg braking situation is divided into two kinds not only can reduces the drg brake noise greatly, can make the stop of elevator safer again.
Claims (5)
1. the control circuit of an elevator brake comprises voltage transformer, safety switch, band-type brake switch and brake coil, it is characterized in that: the input end or the mouth of said brake coil are in series with emergency stop switch.
2. according to the control circuit of the said elevator brake of claim 1; It is characterized in that: said Secondary winding of transformer two mouths connect rectifying circuit respectively; Said safety switch, band-type brake switch and brake coil are connected between the positive pole and negative pole of rectifying circuit; Be parallel with backward diode between the input end of said brake coil and the mouth; The mouth of backward diode is towards the positive pole of rectifying circuit, and emergency stop switch and backward diode block brake coil current jointly when elevator emergency brake.
3. according to the control circuit of the said elevator brake of claim 2, it is characterized in that: also be in series with economic variable resistance between the positive pole of said rectifying circuit and the negative pole, be parallel with the economy resistance switch between the economic variable-resistance two ends.
4. according to the control circuit of the said elevator brake of claim 1; It is characterized in that: be in series with commutation controller between said Secondary winding of transformer two mouths; Safety switch, band-type brake switch are connected between secondary winding two mouths, and brake coil and emergency stop switch are connected between the positive pole and negative pole of commutation controller.
5. according to the control circuit of the said elevator brake of claim 4, it is characterized in that: said commutation controller includes rectifying circuit, reduction voltage circuit and mu balanced circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220234169XU CN202558543U (en) | 2012-05-23 | 2012-05-23 | Control circuit of elevator brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220234169XU CN202558543U (en) | 2012-05-23 | 2012-05-23 | Control circuit of elevator brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202558543U true CN202558543U (en) | 2012-11-28 |
Family
ID=47208224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220234169XU Expired - Lifetime CN202558543U (en) | 2012-05-23 | 2012-05-23 | Control circuit of elevator brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202558543U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674194A (en) * | 2012-05-23 | 2012-09-19 | 佛山市顺德区金泰德胜电机有限公司 | Control circuit of elevator brake |
| CN104743466A (en) * | 2013-12-31 | 2015-07-01 | 刘培 | Elevator band-type brake power supply |
| CN107522127A (en) * | 2017-09-14 | 2017-12-29 | 杭州优迈科技有限公司 | A kind of drive circuit of elevator brake |
| CN109802602A (en) * | 2019-03-08 | 2019-05-24 | 日立电梯（中国）有限公司 | Band-type brake freewheeling circuit, brake sticking brake system and band-type brake afterflow control method |
-
2012
- 2012-05-23 CN CN201220234169XU patent/CN202558543U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674194A (en) * | 2012-05-23 | 2012-09-19 | 佛山市顺德区金泰德胜电机有限公司 | Control circuit of elevator brake |
| CN104743466A (en) * | 2013-12-31 | 2015-07-01 | 刘培 | Elevator band-type brake power supply |
| CN104743466B (en) * | 2013-12-31 | 2017-12-15 | 重庆顺心仪器设备有限公司 | A kind of elevator internal contracting brake power supply |
| CN107522127A (en) * | 2017-09-14 | 2017-12-29 | 杭州优迈科技有限公司 | A kind of drive circuit of elevator brake |
| CN109802602A (en) * | 2019-03-08 | 2019-05-24 | 日立电梯（中国）有限公司 | Band-type brake freewheeling circuit, brake sticking brake system and band-type brake afterflow control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |