CN209427900U - A kind of elevator high pressure detection protection circuit - Google Patents
A kind of elevator high pressure detection protection circuit Download PDFInfo
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- CN209427900U CN209427900U CN201821323839.9U CN201821323839U CN209427900U CN 209427900 U CN209427900 U CN 209427900U CN 201821323839 U CN201821323839 U CN 201821323839U CN 209427900 U CN209427900 U CN 209427900U
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Abstract
The utility model relates to elevator technology fields; protection circuit is detected more particularly to a kind of elevator high pressure; the protection circuit includes the high pressure monitor input terminal being sequentially connected, rectification filtering module, light-coupled isolation module, voltage comparison module and high pressure monitoring output; it is characterized in that; the output end of the voltage comparison module is connected with switch module, and the output end of the switch module is connected with braking relay module.The utility model can be realized direct stop elevator when safety return circuit or loop of the door lock power-off, achieve the purpose that safeguard protection.
Description
Technical field
The utility model relates to elevator technology fields, and in particular to a kind of elevator high pressure detection protection circuit.
Background technique
Safety return circuit is exactly equipped with a safety switch in each safety component of elevator, and all safety switches are connected,
Control a safety relay.All in the case where connection, safety relay is attracted only all safety switches, and elevator could obtain
Electricity operation, otherwise elevator stops running immediately.
Loop of the door lock all fills in every fan hall door and gate to guarantee that elevator must could be run after the closing of whole doors
There is an electric interlock switch.Only whole door electric interlock switches are in the case where being all turned on, the door lock relay of control flow
It can be attracted, elevator could be run.
It is respectively arranged with corresponding safety relay and door lock relay in traditional elevator safety loop and loop of the door lock,
Alarm input signal of the corresponding normally opened contact of its safety relay and door lock relay as electric life controller, electric life controller
After receiving the alarm input signal, the corresponding relay stop elevator of stop elevator is capable of in control.
The unlatching of band-type brake is swashed contactor by force by band-type brake and band-type brake relay is directly controlled, safety relay and door lock relay
Device must assure that before elevator normal operation and be closed.In elevator starting, frequency converter inputs contactor, frequency converter output contact
Device, band-type brake swash by force relay and band-type brake relay is attracted, and band-type brake fully opens.When occur safety return circuit or loop of the door lock power-off
In the case where, frequency converter inputs contactor, frequency converter output contactor, band-type brake and swashs relay and the disconnection of band-type brake relay by force, real
Existing elevator emergency band-type brake stop avoids that safety accident occurs.
The detection circuit of existing safety return circuit are as follows: safety relay of connecting between safety return circuit and high voltage input terminal
Device, by the data input pin of the first normally opened contact access electric life controller of the safety relay, band-type brake relay is connected across electricity
Between the output end of terraced controller and the second normally opened contact of safety relay.When high voltage input terminal power-off, then safety relay
Device power-off, the first normally opened contact of safety relay and the second normally opened contact disconnect at this time, at this point, elevator internal contracting brake stop electricity
Ladder, at the same elevator main controller receive elevator relay the first normally opened contact disconnect signal after, control system is carried out into one
The safeguard protection of step acts.
The detection circuit of existing loop of the door lock and the detection circuit of safety return circuit are similar.
Above-mentioned detection circuit needs to pass through elevator controlling in the case where safety return circuit or loop of the door lock power off
Device controls the state of its relay brake module, and circuit response time is slower.
Summary of the invention
The purpose of this utility model is to provide a kind of elevator high pressure detect protection circuit, can be realized safety return circuit or
Loop of the door lock direct stop elevator when powering off, achievees the purpose that safeguard protection.
In order to reach above-mentioned technical purpose, technical solution used by the utility model is as follows:
A kind of elevator high pressure detection protection circuit, the protection circuit include the high pressure monitor input terminal being sequentially connected, rectification
Filter module, light-coupled isolation module, voltage comparison module and high pressure monitoring output, which further includes braking relay
Module, it is characterised in that: the signal of the high pressure monitor input terminal enters interface connection elevator safety loop and loop of the door lock
High pressure detects signal output end, and the signal output interface of high pressure monitor input terminal connects the signal input part of rectification filtering module,
The signal input part of the signal output end connection light-coupled isolation module of rectification filtering module, the signal output end of light-coupled isolation module
Connect the signal input part of voltage comparison module, the signal of the signal output end connection high pressure monitoring output of voltage comparison module
Entrance, the signal outlet control connection electric life controller of high pressure monitoring output；The braking relay module is connected across switch
Between the output end and electric life controller of module；The braking relay module includes data with the electric life controller respectively
Elevator frequency converter output contactor, the band-type brake of port parallel connection swash by force relay, band-type brake relay, frequency converter input contact
Device；
The output end of the voltage comparison module is connected with switch module, the output end and braking relay of the switch module
Device module is connected.
The elevator high pressure detection protection circuit, it is characterised in that: the rectification filtering module includes bridge rectifier electricity
Road module, the first filter capacitor, bridge rectifier module are in parallel with the first filter capacitor；The bridge rectifier module is
It is made of the first, second, third, fourth diode, first, third Diode series the first series circuit of composition, the second, the 4th
Diode series constitute the second series circuit, and the first series circuit, the second series circuit are in parallel.
The elevator high pressure detection protection circuit, which is characterized in that the switch module uses the NPN of common base connection
Type triode, the base stage of the triode are connected with the output end of the voltage comparison module, and the collector of the triode is made
For the output end of the switch module.
A kind of described elevator high pressure detection protection circuit, which is characterized in that the signal input port of the high pressure monitoring side with
The output end of the voltage comparison module is connected, and signal outlet is connected with the electric life controller for controlling elevator operation.
A kind of elevator high pressure detection protection circuit, which is characterized in that the voltage comparison module uses compared with
Compared with device, the reverse input end of the voltage comparison module connects reference voltage.
The utility model has the following beneficial effects:
1, protection circuit disclosed in the utility model, by by high pressure after a series of rectifying and wave-filtering with benchmark electricity
Pressure is compared to obtain the starting voltage of switch module, no can be connected by switch module to control leading for braking relay module
Whether logical, and then control the operating status of elevator.
2, the collected high-voltage signal of institute is passed through a series of conversion, led to by protection circuit disclosed in the utility model
It crosses high pressure monitoring output and signal is passed into electric life controller, electric life controller executes phase according to the corresponding signal received
The movement answered illustrates power cut-off in front-end circuit if detecting no signal, then electric life controller can control elevator device into
The a series of safeguard procedures of row.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model.
In figure: 1- high pressure monitor input terminal, 2- rectification filtering module, 3- light-coupled isolation module, 4- voltage comparison module, 5-
High pressure monitoring output, 6- switch module, 7- braking relay module.
Specific embodiment
The utility model is described in detail below by specific embodiment combination attached drawing, it should be noted that do not conflicting
In the case where, the feature in the embodiments of the present invention and embodiment can be combined with each other, the protection model of the utility model
It encloses and is not limited to this.
The utility model provides a kind of elevator high pressure detection protection circuit, for elevator safety loop and loop of the door lock
High pressure detection, can not only realize the detection to safety return circuit and loop of the door lock on-off, and can be realized safety return circuit and door
Lock loop direct stop elevator when powering off, achievees the purpose that safeguard protection.When occur safety return circuit or loop of the door lock power-off
When situation, the control by elevator main controller is not needed, it being capable of timely direct stop elevator.
As shown in Figure 1, a kind of elevator high pressure detection protection circuit, the protection circuit include high pressure monitor input terminal 1, rectification
Filter module 2, light-coupled isolation module 3, voltage comparison module 4, switch module 6 and high pressure monitoring output 5, the protection circuit is also
Including braking relay module 7, high-voltage signal is input in the protection circuit by high pressure monitor input terminal 1, high pressure letter
Number by rectification filtering module 2 carry out full-wave rectification and filtering after, by light-coupled isolation module 3 carry out signal isolation transmit,
Then pass through voltage comparison module 4, the output signal of voltage comparison module 4 is exported by high pressure monitoring output 5, while voltage
Starting voltage of the output signal of comparison module 4 as switch module.When the output signal of voltage comparison module 4 is high level
When, then module is started switch, the output end of switch module 6 exports corresponding switching signal.The switching signal is braking relay
The voltage signal of device module 7, the braking relay module 7 are connected across between the output end of switch module and electric life controller,
The braking relay module 7 includes that the elevator frequency converter respectively with the data port of electric life controller parallel connection exports
Contactor KMY, band-type brake swash by force relay KMZ, band-type brake relay KMB, frequency converter and input contactor KMC.In the defeated of switch module 6
When the switching signal of outlet has voltage signal output, 7 one end of braking relay module is in the state of conducting, elevator controlling at this time
Device can control lift car normal operation.When the output signal of voltage comparison module 4 is low level, then 6 nothing of switch module
Method starting, the output end of corresponding switch module 6 is without output voltage, and one end of braking relay module 7 is without conducting voltage at this time,
Braking relay module 7 is not turned on, then the corresponding relay and contactor power loss in braking relay module 7, and then band-type brake system
Stop lift car.
As shown in Fig. 2, the rectification filtering module 2 is composed in parallel by bridge rectifier module and filter capacitor C1.
The high-voltage signal is accessed by the resistance R1 and resistance R2 of the input terminal of the bridge rectifier module respectively, the bridge-type
Exported after the output end of rectification circuit module is in parallel with filter capacitor C1, the bridge rectifier module be by diode D1 ~
D4 composition, by concatenated diode D1 and D3 it is in parallel with concatenated diode D2 and D4 after, institute in parallel with filter capacitor C1 progress
Resistance R1 is stated to be connected with the node of diode D1 and D3；The resistance R2 is connected with the node of diode D2 and D4.It is described
AC signal can be made into direct current signal and exported by bridge rectifier.It is defeated that the high-voltage signal successively passes through high pressure detection
Enter end, divider resistance access rectification filtering module in bridge rectifier carry out full-wave rectification, by the high pressure of full-wave rectification
Signal exports after filter capacitor is filtered.
The light-coupled isolation module 3 includes photoelectrical coupler, and isolation of the photoelectrical coupler for signal is transmitted.Resistance
In parallel with filter capacitor C1 after R3 and resistance R4 series connection, resistance R3 and R4 play the role of dividing current limliting.The photoelectrical coupler
Input voltage be resistance R4 input voltage；Emitter ground connection in the output end of photoelectrical coupler, collector pass through pull-up
Resistance R5 is controlled to a power supply, and power supply is grounded by filter capacitor C3, and the pull-up resistor plays signal pull-up, can be guaranteed
When photoelectrical coupler does not export, output signal is power supply signal；The filter capacitor C3 can be filtered for power supply signal.
The collector is grounded by filter capacitor C2, and by resistance R5, by treated, signal exports collector, while current collection
Pole is by the resistance R5 and resistance R6 series connection ground connection, and filter capacitor C2, resistance R5 and resistance R6 are together constituted defeated here
Filter circuit out is filtered for the output signal of photoelectrical coupler, prevents signal jitter.
The voltage comparison module 4 includes voltage comparator (same to phase comparator), the positive input of the voltage comparator
End is connected by resistance R7 with the collector of photoelectrical coupler, and the reverse input end of the voltage comparator passes through resistance R8 and base
Quasi- power supply is connected, while the reverse input end passes through resistance R9 and capacitor C4 ground connection respectively, and resistance R8 and R9 are for dividing, for electricity
Comparator is pressed to provide voltage benchmark, capacitor C4 realizes benchmark voltage input filter.Feedback resistance R7 is connected across voltage
Between the signal output end and positive input of comparator.The output end of voltage comparator passes through pull-up resistor R10 connection power supply,
It is connected across between the output end of voltage comparator and power supply after resistance R11 and Light-emitting diode LED series connection, for realizing output letter
Number state instruction.Output signal exports after the filtering of resistance R12 and capacitor C5, the output signal of the voltage comparator
By being connected after resistance R12 with high pressure monitoring output, one end of the capacitor C5 is connected with high pressure monitoring output, capacitor C5
The other end ground connection.
The switch module 6 includes triode Q1, and the base stage of triode Q1 passes through base resistance R13 and voltage comparator
Output end is connected, which uses NPN type triode, and the emitter of triode connects bias supply, the emitter with
It is connected between base stage by pull-up resistor R14, output end of the collector of triode Q1 as the switch module.When voltage compares
The on-off of the output signal control triode Q1 of device, when triode Q1 conducting, the output end output voltage letter of the switch module
Number be used as switching signal, elevator control system work normally；When triode Q1 is not turned on, the output end of the switch module is not defeated
Voltage out, elevator frequency converter output contactor KMY, band-type brake swash by force relay KMZ, band-type brake relay KMB, frequency converter input contact
The corresponding disconnection of device KMC, urgent stop carriage, corresponding signal is passed to elevator main control by high pressure monitoring output at this time
Device, elevator main controller can make further safety measure according to the signal, but cannot normally control at this time corresponding
Relay work on.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (5)
1. a kind of elevator high pressure detection protection circuit, which includes the high pressure monitor input terminal being sequentially connected, rectification filter
Wave module, light-coupled isolation module, voltage comparison module and high pressure monitoring output, the protection circuit further include braking relay mould
Block, it is characterised in that: the signal of the high pressure monitor input terminal enters the height of interface connection elevator safety loop and loop of the door lock
Pressure detection signal output end, the signal input part of the signal output interface connection rectification filtering module of high pressure monitor input terminal are whole
The signal input part of the signal output end connection light-coupled isolation module of filter module is flowed, the signal output end of light-coupled isolation module connects
The signal input part of voltage comparison module is connect, the signal of the signal output end connection high pressure monitoring output of voltage comparison module enters
Mouthful, the signal outlet control connection electric life controller of high pressure monitoring output；The braking relay module is connected across switching molding
Between the output end and electric life controller of block；The braking relay module includes the data terminal with the electric life controller respectively
Elevator frequency converter output contactor, the band-type brake of mouth parallel connection swash by force relay, band-type brake relay, frequency converter and input contactor；
The output end of the voltage comparison module is connected with switch module, the output end and braking relay mould of the switch module
Block is connected.
2. elevator high pressure detection protection circuit as described in claim 1, it is characterised in that: the rectification filtering module includes bridge
Formula rectification circuit module, the first filter capacitor, bridge rectifier module are in parallel with the first filter capacitor；The bridge rectifier electricity
Road module is made of the first, second, third, fourth diode, first, third Diode series the first series circuit of composition,
The second, the 4th Diode series constitute the second series circuit, and the first series circuit, the second series circuit are in parallel.
3. a kind of elevator high pressure detection protection circuit according to claim 1 or 2, which is characterized in that the switch module
Using the NPN type triode of common base connection, the base stage of the triode is connected with the output end of the voltage comparison module, institute
State output end of the collector of triode as the switch module.
4. a kind of elevator high pressure detection protection circuit according to claim 1 or 2, which is characterized in that the high pressure monitoring
The signal input port at end is connected with the output end of the voltage comparison module, signal outlet and the electricity for controlling elevator operation
Terraced controller is connected.
5. a kind of elevator high pressure detection protection circuit according to claim 1 or 2, which is characterized in that the voltage compares
Module uses same phase comparator, and the reverse input end of the voltage comparison module connects reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821323839.9U CN209427900U (en) | 2018-08-16 | 2018-08-16 | A kind of elevator high pressure detection protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821323839.9U CN209427900U (en) | 2018-08-16 | 2018-08-16 | A kind of elevator high pressure detection protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209427900U true CN209427900U (en) | 2019-09-24 |
Family
ID=68001476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821323839.9U Expired - Fee Related CN209427900U (en) | 2018-08-16 | 2018-08-16 | A kind of elevator high pressure detection protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209427900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123088A (en) * | 2020-01-04 | 2020-05-08 | 广东卓梅尼技术股份有限公司 | Elevator door lock detection circuit |
| CN111650494A (en) * | 2020-05-27 | 2020-09-11 | 上海新时达电气股份有限公司 | Safety loop detection device and detection method thereof |
| CN112684359A (en) * | 2020-12-03 | 2021-04-20 | 上汽通用汽车有限公司 | Voltage pulse isolation protection device and battery test bench comprising same |
-
2018
- 2018-08-16 CN CN201821323839.9U patent/CN209427900U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123088A (en) * | 2020-01-04 | 2020-05-08 | 广东卓梅尼技术股份有限公司 | Elevator door lock detection circuit |
| CN111650494A (en) * | 2020-05-27 | 2020-09-11 | 上海新时达电气股份有限公司 | Safety loop detection device and detection method thereof |
| CN111650494B (en) * | 2020-05-27 | 2023-02-14 | 上海新时达电气股份有限公司 | Safety loop detection device and detection method thereof |
| CN112684359A (en) * | 2020-12-03 | 2021-04-20 | 上汽通用汽车有限公司 | Voltage pulse isolation protection device and battery test bench comprising same |
| CN112684359B (en) * | 2020-12-03 | 2024-04-02 | 上汽通用汽车有限公司 | Voltage pulse isolation protection device and battery test bed comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 461000 south section of Yanan Road, Xuchang economic and Technological Development Zone, Henan Patentee after: Xiji Xunda Elevator Co., Ltd Address before: 461000 south section of Yanan Road, Xuchang economic and Technological Development Zone, Henan Patentee before: XJ SCHINDLER (XUCHANG) ELEVATOR Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190924 Termination date: 20200816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |