CN107522127A - A kind of drive circuit of elevator brake - Google Patents
A kind of drive circuit of elevator brake Download PDFInfo
- Publication number
- CN107522127A CN107522127A CN201710827235.1A CN201710827235A CN107522127A CN 107522127 A CN107522127 A CN 107522127A CN 201710827235 A CN201710827235 A CN 201710827235A CN 107522127 A CN107522127 A CN 107522127A
- Authority
- CN
- China
- Prior art keywords
- elevator
- elevator brake
- drive circuit
- safety relay
- gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a kind of drive circuit of elevator brake, current supply circuit including elevator brake, the control element of the switching current supply circuit on off operating mode and the elevator main control board that break-make drive signal is sent to the control element, the control element include the gate-controlled switch and safety relay being connected in current supply circuit；When elevator brings into operation, elevator-mainboard first drives safety relay to close, and gate-controlled switch conducting is driven after first scheduled time that was delayed；When elevator is out of service, elevator-mainboard first drives gate-controlled switch to disconnect, and safety relay closure is driven after second scheduled time that was delayed.The drive circuit of elevator brake provided by the invention, noise during brake action can be reduced, extend the service life of safety relay.
Description
Technical field
The present invention relates to elevator technology field, and in particular to a kind of drive circuit of elevator brake.
Background technology
Brake is most important safety guarantee part in elevator, when Lift out of order, car is promptly subtracted
Speed parking and remains stationary state.Brake is right at motor, the braked wheel being connected installed in motor reel with worm shaft
The active rotating shaft of motor is effectively controlled, and regulates and controls the operating and stopping of motor.
In the prior art, elevator brake is generally controlled using the contact series of two contactors, and contactor is dynamic
Noise is larger when making, particularly evident in villa ladder and the more quiet occasion of use environment, noise.The action of safety relay is made an uproar
Sound is much smaller relative to contactor, but the difference of the mechanical structure and contact due to safety relay and contactor, in safety
During the direct control brake of relay, electrical endurance is shorter than contactor.
The content of the invention
The invention provides a kind of drive circuit of elevator brake, and to solve, contactor noise is big, safety relay is electric
The problem of gas short life.
A kind of drive circuit of elevator brake, including the current supply circuit of elevator brake, the switching current supply circuit lead to
The control element of disconnected state and the elevator main control board that break-make drive signal is sent to the control element, the control element
Including the gate-controlled switch and safety relay being connected in current supply circuit；
When elevator brings into operation, elevator-mainboard first drives safety relay to close, and driving can after first scheduled time that was delayed
Control switch conduction；
When elevator is out of service, elevator-mainboard first drives gate-controlled switch to disconnect, and safety is driven after second scheduled time that was delayed
Relay closes.
When elevator brings into operation, elevator main control board controls two safety relay closures first, and controllable open is controlled after delay
Conducting is closed, brake is opened, elevator operation.When two safety relays act, because gate-controlled switch not yet turns on, therefore,
Almost no electric current flows through for the contact of two safety relays.
When elevator is out of service, elevator main control board controls gate-controlled switch to disconnect first, elevator main control board control two after delay
Individual safety relay synchronously disconnects, arrester close, and elevator is out of service.After gate-controlled switch disconnection, two safety relays
Act, almost no electric current flows through on the contact of two safety relays.
Because when elevator brings into operation and terminates operation, when two safety relays act, the electric current on its contact is several
It is 0 ampere, therefore the life-span of safety relay is no better than the mechanical life of safety relay, compared to directly using safety relay
The life of device control brake action is a lot.
The make-and-break signal of safety relay and gate-controlled switch both from elevator main control board, i.e., elevator main control board to safety after
Electrical equipment and gate-controlled switch send signal, to trigger break-make.
Safety relay includes the contact that control coil and controlled coil control, and the confession of elevator brake is accessed in contact
Electrical circuit, control coil control break-make electricity condition by elevator main control board.
Preferably, the current supply circuit includes rectifier bridge, the gate-controlled switch is connected to AC power and rectifier bridge
Between input side, the safety relay is connected between the outlet side of rectifier bridge and elevator brake.
AC signal is converted to direct current signal by rectifier bridge, and gate-controlled switch control rectifier bridge input side AC signal leads to
Disconnected, safety relay controls the break-make of rectifier bridge outlet side direct current signal.
Preferably, filtering and protection circuit are additionally provided between the AC power and gate-controlled switch.Filtering and protection electricity
Road is used to filter out DM EMI and common mode disturbances and absorbs surge.
Preferably, the filtering and protection circuit include：
The Y capacitance being connected between each AC power cord and ground；
The piezo-resistance being connected between two AC power cords；
The X electric capacity being connected between two AC power cords.
Preferably, the safety relay is two of synchronous break-make, the both ends of elevator brake are connected on respectively.Appoint
One safety relay of meaning disconnects, and can cut the current supply circuit of brake.
Preferably, the gate-controlled switch is bidirectional thyristor.
Preferably, it is additionally provided with and the antiparallel fly-wheel diode of elevator brake.
Because brake is inductive load, energy is stored on brake coil, after gate-controlled switch disconnects, brake coil
By with the antiparallel diode discharge of brake, almost no electric current flows through on the contact of two safety relays.
Preferably, first scheduled time was more than for second scheduled time.
After first scheduled time, slightly length was to ensure the reliable adhesive of safety relay, then gate-controlled switch power supply is turned on,
It is after being powered off for gate-controlled switch, in when separated safety relay as short as possible that second scheduled time is slightly short.
Further preferably, first scheduled time was 15~30ms.Second scheduled time was 5~15ms.
The drive circuit of elevator brake provided by the invention, noise during brake action can be reduced, extends safety
The service life of relay.
Brief description of the drawings
Fig. 1 is the theory diagram of the drive circuit of elevator brake of the present invention；
Fig. 2 is the circuit diagram of the drive circuit of elevator brake of the present invention；
Fig. 3 is the control sequential figure of gate-controlled switch and safety relay in the drive circuit of elevator brake of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the drive circuit of elevator brake of the present invention is described in detail.
As shown in figure 1, a kind of drive circuit of elevator brake, including：Filtering and protection circuit, gate-controlled switch, rectification
Bridge and safety relay, AC power are powered to filter protective circuit, and gate-controlled switch and safety relay receive elevator main control board
Control signal with the on off operating mode of switch driving circuit.
Gate-controlled switch and safety relay receive the control signal of elevator main control board to switch elevator system as control element
The on off operating mode of dynamic device current supply circuit, when elevator brings into operation, elevator-mainboard first drives safety relay to close, and delay first is pre-
Gate-controlled switch conducting is driven after fixing time；When elevator is out of service, elevator-mainboard first drives gate-controlled switch to disconnect, and delay second is pre-
Safety relay closure is driven after fixing time.
As shown in Fig. 2 the drive circuit of elevator brake includes：Filtering and protection circuit, gate-controlled switch, rectifier bridge and peace
All relay.
Filtering and protection circuit are used to filter out DM EMI and common mode disturbances, and absorb surge, filtering and protection circuit
Including：Y capacitance Y1, Y capacitance Y2, piezo-resistance RV1, X electric capacity C1, wherein, Y capacitance Y1 and Y capacitance Y2 are connected to AC power
Between ground, piezo-resistance RV1 and X electric capacity C1 is each attached to AC power.X electric capacity is used to eliminate DM EMI, Y capacitance
For eliminating common mode disturbances.
Rectifier bridge includes single-phase full bridge rectification circuit, electric capacity C1, electric capacity C2, electric capacity C3, the electricity that four diode D1 are formed
Hold C4 and be connected to the resistance R2 of rectifier bridge outlet side, each electric capacity respectively with a diodes in parallel.
Ac supply signal is converted into DC power signal by rectifier bridge, is passed through between rectifier bridge and filtering and protection circuit
Gate-controlled switch TRIAC connections, power supply of the AC power to rectifier bridge is controlled by gate-controlled switch TRIAC.Gate-controlled switch is two-way
IGCT, the control signal that gate-controlled switch receives elevator main control board trigger break-make.
Safety relay is connected between the outlet side of rectifier bridge and elevator brake, and safety relay is synchronous break-make
Two, respectively safety relay RY1 and safety relay RY2, two safety relays are each connected on elevator brake
Both ends, safety relay RY1 control coil are parallel with diode D2, and safety relay RY2 control coil is parallel with two poles
Pipe D3.In figure, SW_1 and SW_2 are respectively the control signal of two safety relays, and F_SW0 is two safety relay conducts
The tie point of the contact series of feedback, F_SW1 are the feedback point for being given to elevator main control board.
Elevator brake inverse parallel has sustained diode 4.Elevator main control board is opened according to the SECO shown in Fig. 3 is controllable
Close TRIAC, safety relay RY1 and safety relay RY2 break-make.
The course of work of the present invention is as follows：
When elevator brings into operation, elevator main control board controls safety relay RY1 and safety relay RY2 synchronously to close first
Close, be delayed t0(t0For 16ms) after the time, elevator main control board control gate-controlled switch TRIAC conductings, brake is opened.Due to safety
When relay RY1 and safety relay RY2 are closed, gate-controlled switch TRIAC is not turned on, therefore, safety relay RY1 and safety after
There is no electric current to flow through during electrical equipment RY2 contact action.
When elevator is out of service, elevator main control board controls gate-controlled switch TRIAC to disconnect first, is delayed certain time t2(t2For
After 8ms), elevator main control board control safety relay RY1 and safety relay RY2 synchronously disconnects, arrester close.Due to system
Dynamic device be inductive load, and energy is stored on brake coil, after gate-controlled switch TRIAC disconnects, brake coil by with
Almost there is no electric current stream on the antiparallel diode D4 electric discharges of brake, safety relay RY1 and safety relay RY2 contact
Cross.
To sum up, when elevator brings into operation and terminates operation, when two safety relays act, the electric current on its contact is several
It is 0 ampere, therefore the life-span of safety relay is no better than the mechanical life of safety relay, compared to directly using safety relay
The life of device control brake action is a lot.
The present invention is described in detail above, made by gate-controlled switch TRIAC and two safety relays cooperation
With extending the service life of safety relay, while noise can be reduced.
Claims (10)
1. a kind of drive circuit of elevator brake, including the current supply circuit of elevator brake, the switching current supply circuit break-make
The control element of state and the elevator main control board that break-make drive signal is sent to the control element, it is characterised in that described
Control element includes the gate-controlled switch and safety relay being connected in current supply circuit；
When elevator brings into operation, elevator-mainboard first drives safety relay to close, and controllable open is driven after first scheduled time that was delayed
Close conducting；
When elevator is out of service, elevator-mainboard first drives gate-controlled switch to disconnect, and safety relay is driven after second scheduled time that was delayed
Device closes.
2. the drive circuit of elevator brake as claimed in claim 1, it is characterised in that the current supply circuit includes rectification
Bridge, the gate-controlled switch are connected between AC power and the input side of rectifier bridge, and the safety relay is connected to rectifier bridge
Outlet side and elevator brake between.
3. the drive circuit of elevator brake as claimed in claim 2, it is characterised in that the AC power and gate-controlled switch
Between be additionally provided with filtering and protection circuit.
4. the drive circuit of elevator brake as claimed in claim 3, it is characterised in that the filtering and protection circuit bag
Include：
The Y capacitance being connected between each AC power cord and ground；
The piezo-resistance being connected between two AC power cords；
The X electric capacity being connected between two AC power cords.
5. the drive circuit of elevator brake as claimed in claim 1, it is characterised in that the safety relay is synchronous logical
Disconnected two, the both ends of elevator brake are connected on respectively.
6. the drive circuit of elevator brake as claimed in claim 1, it is characterised in that the gate-controlled switch is two-way brilliant lock
Pipe.
7. the drive circuit of elevator brake as claimed in claim 1, it is characterised in that be additionally provided with anti-simultaneously with elevator brake
The fly-wheel diode of connection.
8. the drive circuit of elevator brake as claimed in claim 1, it is characterised in that it is pre- that first scheduled time was more than second
Fix time.
9. the drive circuit of elevator brake as claimed in claim 1, it is characterised in that first scheduled time be 15~
30ms。
10. the drive circuit of elevator brake as claimed in claim 9, it is characterised in that second scheduled time be 5~
15ms。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827235.1A CN107522127A (en) | 2017-09-14 | 2017-09-14 | A kind of drive circuit of elevator brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827235.1A CN107522127A (en) | 2017-09-14 | 2017-09-14 | A kind of drive circuit of elevator brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107522127A true CN107522127A (en) | 2017-12-29 |
Family
ID=60735885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710827235.1A Pending CN107522127A (en) | 2017-09-14 | 2017-09-14 | A kind of drive circuit of elevator brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107522127A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472758A (en) * | 2002-07-31 | 2004-02-04 | 上海帆迅科技发展有限责任公司 | Electronic zero load switching device |
| CN102295242A (en) * | 2011-08-29 | 2011-12-28 | 石家庄五龙制动器股份有限公司 | Elevator-brake mute-operation control circuit |
| CN202245908U (en) * | 2011-08-29 | 2012-05-30 | 石家庄五龙制动器股份有限公司 | Control circuit for silent operation of elevator brake |
| 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 |
| CN202558543U (en) * | 2012-05-23 | 2012-11-28 | 佛山市顺德区金泰德胜电机有限公司 | Control circuit of elevator brake |
| WO2013052051A1 (en) * | 2011-10-06 | 2013-04-11 | Otis Elevator Company | Elevator brake control |
| CN203159114U (en) * | 2013-03-15 | 2013-08-28 | 杭州浙阳电气有限公司 | Driving power circuit for electromagnetic brake |
| CN102328887B (en) * | 2010-07-13 | 2014-12-24 | 东芝电梯株式会社 | Control device for brake of elevator |
| CN204096998U (en) * | 2014-08-27 | 2015-01-14 | 安徽广德昌立制动器有限公司 | Universal elevator brake voltage regulator control circuit |
| CN205709660U (en) * | 2016-05-31 | 2016-11-23 | 苏州台菱电梯有限公司 | A kind of drive circuit of elevator brake |
| CN106276674A (en) * | 2015-06-29 | 2017-01-04 | 奥的斯电梯公司 | Electromagnetic brake control circuit for elevator applications |
-
2017
- 2017-09-14 CN CN201710827235.1A patent/CN107522127A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472758A (en) * | 2002-07-31 | 2004-02-04 | 上海帆迅科技发展有限责任公司 | Electronic zero load switching device |
| CN102328887B (en) * | 2010-07-13 | 2014-12-24 | 东芝电梯株式会社 | Control device for brake of elevator |
| CN102295242A (en) * | 2011-08-29 | 2011-12-28 | 石家庄五龙制动器股份有限公司 | Elevator-brake mute-operation control circuit |
| CN202245908U (en) * | 2011-08-29 | 2012-05-30 | 石家庄五龙制动器股份有限公司 | Control circuit for silent operation of elevator brake |
| WO2013052051A1 (en) * | 2011-10-06 | 2013-04-11 | Otis Elevator Company | Elevator brake control |
| 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 |
| CN202558543U (en) * | 2012-05-23 | 2012-11-28 | 佛山市顺德区金泰德胜电机有限公司 | Control circuit of elevator brake |
| CN203159114U (en) * | 2013-03-15 | 2013-08-28 | 杭州浙阳电气有限公司 | Driving power circuit for electromagnetic brake |
| CN204096998U (en) * | 2014-08-27 | 2015-01-14 | 安徽广德昌立制动器有限公司 | Universal elevator brake voltage regulator control circuit |
| CN106276674A (en) * | 2015-06-29 | 2017-01-04 | 奥的斯电梯公司 | Electromagnetic brake control circuit for elevator applications |
| CN205709660U (en) * | 2016-05-31 | 2016-11-23 | 苏州台菱电梯有限公司 | A kind of drive circuit of elevator brake |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171229 |
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| RJ01 | Rejection of invention patent application after publication |