CN203451025U - Power failure delay control circuit used in escalator additional brake - Google Patents
Power failure delay control circuit used in escalator additional brake Download PDFInfo
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- CN203451025U CN203451025U CN201320426399.0U CN201320426399U CN203451025U CN 203451025 U CN203451025 U CN 203451025U CN 201320426399 U CN201320426399 U CN 201320426399U CN 203451025 U CN203451025 U CN 203451025U
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- escalator
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Abstract
The utility model discloses a power failure delay control circuit used in an escalator additional brake. The power failure delay control circuit comprises a transformer, a starting circuit and a retaining circuit, wherein a power circuit is connected to the primary side of the transformer, the starting circuit and the retaining circuit are respectively used for supplying power to the escalator additional brake, and power is supplied to the retaining circuit through the auxiliary side of the transformer. The power failure delay control circuit further comprises an energy storage element, a first switch and a first control unit, wherein the first switch is connected to the starting circuit, the first control unit sends a power-on signal to the first switch after detecting that the starting circuit and the power circuit are both powered on, and sends a power-off signal to the first switch after a first set time, and the energy storage element is connected with the input end of the transformer and supplies power to the transformer after the power circuit is powered off. According to the power failure delay control circuit used in the escalator additional brake, when power failure occurs, operation of the additional brake can be delayed relative to operation of a main brake, and therefore the brake distance can meet the requirements of the national standard.
Description
Technical field
The utility model relates to time delay circuit field, is specifically related to a kind of power cut off delay control circuit for additional brake of escalator.
Background technology
Under some special occasions, in escalator and moving sidewalk equipment, need to configure a foundation brakes and an additional brake simultaneously, wherein foundation brakes is for motor braking, and additional brake is for brake transsmission device.
Stopping distance regulation in standard GB/T 16899-1997 during not to additional brake is strict with, so foundation brakes and additional brake allow to move simultaneously, when there is power failure or power fail, the coil of foundation brakes and additional brake is dead electricity simultaneously, and both realize braking simultaneously.
Granted publication number be CN102180399B disclosure of the invention a kind of progressive additional brake of escalator, comprise and be fixed on the friction disc on ladder sprocket wheel and be assembled in the additional brake being connected with electromagnet on truss, the U-shaped laminated spring of additional brake is fixed on truss, the both sides of U-shaped spring are assembled respectively and are determined voussoir, the moving voussoir of inside face fixed friction sheet is set along the sliding surface of determining voussoir, the end of moving voussoir is hinged on respectively the open end of the active open groove of electromagnet rank bar, and the friction lining that makes voussoir along with rank bar move axially with ladder sprocket wheel on friction disc clutch.
In revised standard GB/T 16899-2011, escalator, moving sidewalk stopping distance are had to strict regulation, when there is power failure or power fail, if foundation brakes and additional brake move simultaneously, stopping distance does not likely meet the requirement of standard GB/T 16899-2011.
Utility model content
The utility model provides a kind of power cut off delay control circuit for additional brake of escalator, and when there is power failure or power fail, additional brake is delayed action with respect to foundation brakes, makes the stopping distance of drg meet GB16899-2011 requirement.
For a power cut off delay control circuit for additional brake of escalator, comprise that former edge joint has the voltage transformer of power circuit, and open circuit and lock-out circuit for powering to additional brake of escalator respectively; Wherein lock-out circuit is powered by the secondary of voltage transformer, is also provided with energy-storage travelling wave tube, the first switch and the first control unit; Described the first switch is connected in open circuit, after all powering on, described the first control unit detection open circuit and power circuit send Continuity signal to the first switch, and after the first setting-up time, to the first switch, send cut-off signal, described energy-storage travelling wave tube be connected with the input end of described voltage transformer and after power circuit dead electricity to transformer-supplied.
Power circuit, to the former limit power supply of voltage transformer, charges to energy-storage travelling wave tube simultaneously, after the first control unit detects open circuit and power circuit and all powers on, to the first switch, send Continuity signal, now additional brake is opened, utilize open circuit (due to the higher cut-in voltage of needs, so open circuit generally can external 220V source of AC) open the band-type brake of additional brake, after the first setting-up time, the first control unit sends cut-off signal to the first switch, after the first switch disconnects, the power supply of lock-out circuit is provided by the secondary of voltage transformer, the band-type brake of additional brake maintains the state of opening, when there is power fail (power circuit and open circuit all have a power failure), foundation brakes action, motor is stopped operating, energy-storage travelling wave tube is to transformer-supplied, maintain the power supply of lock-out circuit, make additional brake continue to maintain the state that band-type brake is opened, after the electric energy of storing in energy-storage travelling wave tube exhausts, the band-type brake of additional brake is closed, realize the braking of driving device.
As preferably, described voltage transformer at least has two secondary, and wherein the first secondary is powered to described lock-out circuit, and the second secondary is to described the first control unit power supply.
After power circuit and open circuit et out of order, energy-storage travelling wave tube is to the former limit power supply of voltage transformer, and the first secondary continues to lock-out circuit power supply, and the second secondary continues to the first control unit power supply.
As preferably, described the first switch is relay, and the conducting of this relay control coil is controlled by described the first control unit, and the open contact of this relay accesses in described open circuit.
After the first control unit detects open circuit and power circuit and all powers on, make relay control coil energising, open circuit conducting, after the first setting-up time, relay control coil dead electricity, is powered to additional brake by lock-out circuit.
As preferably, the loop of described relay control coil is provided with optical coupled switch, and the conducting of described optical coupled switch is controlled by described the first control unit.
Described the first control unit is by controlling the conducting of optical coupled switch, thus the energising of control relay control coil.
As preferably, described power circuit comprises second switch and the second control unit, wherein the former limit of voltage transformer is connected in series with second switch and forms power supply branch road, described the second control unit and energy-storage travelling wave tube respectively with power supply branch circuit parallel connection, and described the second control unit has the signal output part that sends make-and-break signal to second switch.The branch road of wherein powering is connected (for example connecting 24V direct supply) with outside power supply.
As preferably, described the second control unit also has the signal input part being connected with the first control unit, and described the first control unit also, for when the power circuit dead electricity, sends cut-off signal by the second control unit to second switch after the second setting-up time.
When power circuit dead electricity, through the second setting-up time, if still have power storage in energy-storage travelling wave tube, the first control unit sends instruction, by the second control unit, to second switch, send cut-off signal, i.e. the former limit power-off of control transformer, causes the secondary power-off of voltage transformer, the band-type brake of additional brake is closed, realizes the braking of driving device.
When power circuit dead electricity, the electric energy of storing in energy-storage travelling wave tube is for maintaining opening of additional brake band-type brake, make additional brake delay action with respect to foundation brakes, when the electric energy stored is more, after the second setting-up time, in energy-storage travelling wave tube, still have electric energy in energy-storage travelling wave tube, braking for fear of additional brake is too delayed, produce danger, the second control unit forwards cut-off signal to second switch, makes additional brake action; When if the electric energy of storing in energy-storage travelling wave tube is less, after the electric energy of storing in energy-storage travelling wave tube exhausts, annex drg realizes braking.
As preferably, second switch is semiconductor switch, and the second control unit is for for controlling the pwm signal circuit for generating of semiconductor switch.Second switch can be MOSFET or IGBT etc.
As preferably, described energy-storage travelling wave tube is chemical capacitor.
The capacitance of the unit volume of chemical capacitor is larger than similar electric capacity, and the capacitance of chemical capacitor is selected according to needs, can meet the time delay demand of annex drg action.
As preferably, the first control unit is also provided with the port that gathers energy-storage travelling wave tube voltage signal, and described the first control unit is also for sending alerting signal during lower than setting value at energy-storage travelling wave tube voltage.
When energy-storage travelling wave tube is aging because of long-time use, the electric energy of storing is limited, and in the time of cannot meeting the time delay demand of annex drg, the first control unit sends alerting signal, carries out in time the replacing of energy-storage travelling wave tube.
As preferably, be also provided with for receiving the go forward side by side warning device of line output of described alerting signal.Warning device can be the elements such as status indicator lamp or buzzer phone.
The utility model is for the power cut off delay control circuit of additional brake of escalator, when there is power failure or power fail, can make additional brake delay action with respect to foundation brakes, make stopping distance meet GB requirement, avoid passenger that the emergency braking because of escalator causes because inertia is fallen down simultaneously.
Accompanying drawing explanation
Fig. 1 is that the utility model is for the schematic diagram of the power cut off delay control circuit of additional brake of escalator;
Fig. 2 is that the utility model is for the circuit diagram of the power cut off delay control circuit of additional brake of escalator.
The specific embodiment
Below in conjunction with accompanying drawing, the power cut off delay control circuit to the utility model for additional brake of escalator is described in detail.
As shown in Figure 1, a kind of power cut off delay control circuit for additional brake of escalator, comprises that former edge joint has the voltage transformer of power circuit, and open circuit and lock-out circuit for powering to additional brake of escalator respectively; Wherein lock-out circuit is powered by the secondary of voltage transformer, is also provided with energy-storage travelling wave tube, the first switch and the first control unit; The first switch is connected in open circuit, after all powering on, the first control unit detection open circuit and power circuit send Continuity signal to the first switch, and after the first setting-up time, to the first switch, send cut-off signal, energy-storage travelling wave tube be connected with the input end of voltage transformer and after power circuit dead electricity to transformer-supplied.
Voltage transformer has two secondary, and wherein the first secondary is powered to lock-out circuit, and the second secondary is powered to the first control unit.
Power circuit comprises second switch and the second control unit, wherein the former limit of voltage transformer is connected in series with second switch and forms power supply branch road, the second control unit and energy-storage travelling wave tube respectively with power supply branch circuit parallel connection, and the second control unit has the signal output part that sends make-and-break signal to second switch.
The second control unit also has the signal input part being connected with the first control unit, and the first control unit also, for when the power circuit dead electricity, sends cut-off signal by the second control unit to second switch after the second setting-up time.
The first control unit is also provided with the port that gathers energy-storage travelling wave tube voltage signal, and the first control unit is also for sending alerting signal at energy-storage travelling wave tube voltage during lower than setting value, and is provided with for receiving the go forward side by side warning device of line output of alerting signal.
During work, power circuit, to the former limit power supply of voltage transformer, charges to energy-storage travelling wave tube simultaneously, after the first control unit detects open circuit and power circuit and all powers on, to the first switch, send Continuity signal, additional brake is opened, after the first setting-up time, the first control unit sends cut-off signal to the first switch, after the first switch disconnects, the power supply of lock-out circuit is provided by the secondary of voltage transformer, the band-type brake of additional brake maintains the state of opening, when there is power fail, foundation brakes action, motor is stopped operating, energy-storage travelling wave tube is to transformer-supplied, make additional brake continue to maintain the state that band-type brake is opened, when the electric energy of storing in energy-storage travelling wave tube exhausts or the first control unit sends cut-off signal to second switch after the second setting-up time, make voltage transformer dead electricity, the band-type brake of additional brake is closed, realize the braking of driving device.
The utility model for a kind of specific embodiment of the power cut off delay control circuit of additional brake of escalator as shown in Figure 2, comprise being connected with+the voltage transformer T1 of 24V power supply, and respectively to open circuit and the lock-out circuit of additional brake of escalator power supply (powering to additional brake by BZ+ and BZ-), being also provided with chemical capacitor E1(is energy-storage travelling wave tube), relay (i.e. the first switch) and MCU(be the first control unit).
The former limit of voltage transformer T1 is by+24V Power supply, voltage transformer T1 has the first secondary (i.e. the output of winding between the 6th pin and the 7th pin) and the second secondary (i.e. the output of winding between the 9th pin and the 10th pin), wherein the first secondary is powered to lock-out circuit, and the second secondary is powered to the first control unit.
Relay is connected in open circuit, and the loop of relay control coil K1-1 is provided with optical coupled switch U2, and the conducting of optical coupled switch is controlled by MCU, in the open contact K1-2 of relay and open contact K1-3 access open circuit.
After MCU detects the cut-in voltage (220V) of additional brake and voltage transformer+24V power line voltage and all powers on, by optical coupled switch U2 control relay control coil, K1-1 obtains electric, the open contact K1-2 of relay and open contact K1-3 are closed, the band-type brake of additional brake is opened, for example, after the first setting-up time (5s), by optical coupled switch U2 control relay control coil K1-1 dead electricity, additional brake is powered by the second secondary of voltage transformer, maintains the open mode of band-type brake.
Chemical capacitor E1 is in parallel with the former limit of voltage transformer T1, by+24V power line voltage, is charged, and when+24V power supply has a power failure, to the former limit of voltage transformer T1, continues power supply.
Power circuit also comprises that semiconductor switch Q3(is second switch) and i.e. the second control unit of PWM circuit for generating U3(), the former limit of voltage transformer T1 is connected in series with semiconductor switch Q3 and forms power supply branch road, PWM circuit for generating U3 and chemical capacitor E1 respectively with power supply branch circuit parallel connection, and PWM circuit for generating U3 has the signal output part that sends make-and-break signal to semiconductor switch Q3.
PWM circuit for generating U3 is connected with MCU, when+24V power supply has a power failure, for example, through the second setting-up time (5s) MCU, by PWM circuit for generating U3, to semiconductor switch Q3, sends cut-off signal.
MCU is provided with the port that gathers energy-storage travelling wave tube voltage signal, the voltage of chemical capacitor E1 during lower than setting value MCU send alerting signal, be provided with for receiving the go forward side by side warning device (figure omits) of line output of alerting signal.
During work ,+24V power supply, to the former limit power supply of voltage transformer T1, charges to chemical capacitor E1 simultaneously, detect+24V of MCU power line voltage and+after 220V cut-in voltage all powers on, by optical coupled switch U2 control relay control coil, K1-1 switches on, relay normally open contact K1-2 and open contact K1-2 are closed, the band-type brake of drg is opened, after 5s, MCU is by optical coupled switch U2 control relay control coil K1-1 dead electricity, the first secondary of voltage transformer T1 is powered to additional brake, the band-type brake that maintains additional brake maintains the state of opening, when there is power fail (+24V power supply or+220V power failure), foundation brakes action, motor is stopped operating, chemical capacitor E1 powers to voltage transformer T1, make additional brake continue to maintain the state that band-type brake is opened, after 5s, if the electric energy of storing in chemical capacitor E1 not yet exhausts, MCU warp-wise semiconductor switch Q3 sends cut-off signal, make voltage transformer T1 dead electricity, the band-type brake of additional brake is closed, realize the braking of driving device.
Claims (10)
1. for a power cut off delay control circuit for additional brake of escalator, comprise that former edge joint has the voltage transformer of power circuit, and open circuit and lock-out circuit for powering to additional brake of escalator respectively; Wherein lock-out circuit is powered by the secondary of voltage transformer, it is characterized in that, is also provided with energy-storage travelling wave tube, the first switch and the first control unit; Described the first switch is connected in open circuit, after all powering on, described the first control unit detection open circuit and power circuit send Continuity signal to the first switch, and after the first setting-up time, to the first switch, send cut-off signal, described energy-storage travelling wave tube be connected with the input end of described voltage transformer and after power circuit dead electricity to transformer-supplied.
2. the power cut off delay control circuit for additional brake of escalator as claimed in claim 1, it is characterized in that, described voltage transformer at least has two secondary, and wherein the first secondary is powered to described lock-out circuit, and the second secondary is to described the first control unit power supply.
3. the power cut off delay control circuit for additional brake of escalator as claimed in claim 1, it is characterized in that, described the first switch is relay, and the conducting of this relay control coil is controlled by described the first control unit, and the open contact of this relay accesses in described open circuit.
4. the power cut off delay control circuit for additional brake of escalator as claimed in claim 3, is characterized in that, the loop of described relay control coil is provided with optical coupled switch, and the conducting of described optical coupled switch is controlled by described the first control unit.
5. the power cut off delay control circuit for additional brake of escalator as claimed in claim 1, it is characterized in that, described power circuit comprises second switch and the second control unit, wherein the former limit of voltage transformer is connected in series with second switch and forms power supply branch road, described the second control unit and energy-storage travelling wave tube respectively with power supply branch circuit parallel connection, and described the second control unit has the signal output part that sends make-and-break signal to second switch.
6. the power cut off delay control circuit for additional brake of escalator as claimed in claim 5, it is characterized in that, described the second control unit also has the signal input part being connected with the first control unit, described the first control unit also, for when the power circuit dead electricity, sends cut-off signal by the second control unit to second switch after the second setting-up time.
7. the power cut off delay control circuit for additional brake of escalator as claimed in claim 5, is characterized in that, second switch is semiconductor switch, and the second control unit is for controlling the pwm signal circuit for generating of semiconductor switch.
8. the power cut off delay control circuit for additional brake of escalator as claimed in claim 1, is characterized in that, described energy-storage travelling wave tube is chemical capacitor.
9. the power cut off delay control circuit for additional brake of escalator as claimed in claim 1, it is characterized in that, the first control unit is also provided with the port that gathers energy-storage travelling wave tube voltage signal, and described the first control unit is also for sending alerting signal during lower than setting value at energy-storage travelling wave tube voltage.
10. the power cut off delay control circuit for additional brake of escalator as claimed in claim 9, is characterized in that, is also provided with for receiving the go forward side by side warning device of line output of described alerting signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320426399.0U CN203451025U (en) | 2013-07-16 | 2013-07-16 | Power failure delay control circuit used in escalator additional brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320426399.0U CN203451025U (en) | 2013-07-16 | 2013-07-16 | Power failure delay control circuit used in escalator additional brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203451025U true CN203451025U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320426399.0U Expired - Lifetime CN203451025U (en) | 2013-07-16 | 2013-07-16 | Power failure delay control circuit used in escalator additional brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203451025U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692226A (en) * | 2015-01-14 | 2015-06-10 | 浙江西子重工机械有限公司 | Delayed parking system and method for automatic escalator or moving walk |
| CN105967035A (en) * | 2015-03-13 | 2016-09-28 | 株式会社日立制作所 | Passenger conveying device and control method thereof |
| CN107994674A (en) * | 2017-11-07 | 2018-05-04 | 中铁第四勘察设计院集团有限公司 | A kind of escalator dual power supply switching auxiliary device and method |
| CN110376941A (en) * | 2019-07-04 | 2019-10-25 | 江西鑫通机械制造有限公司 | A kind of wet-spraying machine control method |
| WO2022000988A1 (en) * | 2020-06-30 | 2022-01-06 | 迅达（中国）电梯有限公司 | Elevator brake control system |
-
2013
- 2013-07-16 CN CN201320426399.0U patent/CN203451025U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692226A (en) * | 2015-01-14 | 2015-06-10 | 浙江西子重工机械有限公司 | Delayed parking system and method for automatic escalator or moving walk |
| CN104692226B (en) * | 2015-01-14 | 2016-09-07 | 浙江西子重工机械有限公司 | A kind of delayed shutdown system and method for escalator or moving sidewalk |
| CN105967035A (en) * | 2015-03-13 | 2016-09-28 | 株式会社日立制作所 | Passenger conveying device and control method thereof |
| CN105967035B (en) * | 2015-03-13 | 2017-10-24 | 株式会社日立制作所 | Passenger conveying appliance and its control method |
| CN107994674A (en) * | 2017-11-07 | 2018-05-04 | 中铁第四勘察设计院集团有限公司 | A kind of escalator dual power supply switching auxiliary device and method |
| CN110376941A (en) * | 2019-07-04 | 2019-10-25 | 江西鑫通机械制造有限公司 | A kind of wet-spraying machine control method |
| CN110376941B (en) * | 2019-07-04 | 2022-02-15 | 江西鑫通机械制造有限公司 | Wet spraying machine control method |
| WO2022000988A1 (en) * | 2020-06-30 | 2022-01-06 | 迅达（中国）电梯有限公司 | Elevator brake control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
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| CX01 | Expiry of patent term |