CN205187602U - Lift -cabin door interlock circuit safety circuit fault detection device - Google Patents
Lift -cabin door interlock circuit safety circuit fault detection device Download PDFInfo
- Publication number
- CN205187602U CN205187602U CN201520935038.8U CN201520935038U CN205187602U CN 205187602 U CN205187602 U CN 205187602U CN 201520935038 U CN201520935038 U CN 201520935038U CN 205187602 U CN205187602 U CN 205187602U
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- circuit
- elevator
- vital
- terminal
- interlock circuit
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Abstract
The utility model provides a lift -cabin door interlock circuit safety circuit fault detection device, the device are including the voltage measurement ware, alarm device, the operating panel that are connected with the controller respectively, and the voltage measurement utensil has terminal A, B, C, and on terminal A was connected to the node between power and the safety circuit, on terminal B was connected to the node between the safety circuit AND gate interlock circuit, terminal C was connected to on the node between gate interlock circuit and the lock circuit contactor. The utility model discloses a judge the size of lift -cabin door interlock circuit safety circuit magnitude of voltage and judge whether it works in security range to the early warning is carried out to problem latent to lift -cabin door interlock circuit safety circuit through the variation tendency to the magnitude of voltage, gradual change nature, reminds before the trouble emergence, plays nip an evil in the bud's effect, when gate interlock circuit safety circuit's magnitude of voltage is close perhaps above prior set for safe worth, then reports to the police, reminds the maintenance personal to overhaul.
Description
Technical field
The utility model relates to elevator technology field, and specifically, relating to safety and the stability of elevator door interlock circuit/vital circuit, is a kind of elevator door interlock circuit/vital circuit failure detector.
Background technology
Annual " in spite of illness the elevator " in the whole nation is that problem is continuous, elevator malfunction, and the thing waited for rescue makes this be too tired to deal with regard to a limited number of maintenance personnel.Data show, in all elevator faults running, maximum is gate interlock fault, accounts for 72% of total failare number, and the fault accounting 6%, two of vital circuit is added together close to 78%.
Along with the rapid growth of elevator, the recoverable amount of whole nation elevator is close to 4,000,000, there is several hundred million people secondary riding elevator every day, various pernicious event of hurting sb.'s feelings about elevator also emerges in an endless stream every year, the event of hurting sb.'s feelings for elevator takes place frequently, and finds through a large amount of observational studies: vital circuit, gate interlock fault are that elevator is hurted sb.'s feelings the one of the main reasons of event.
Why does can high fault rate like this fall?
The elevator of first any vertical transport, no matter how high-end its elevator control chain is, certain for vital circuit and gate interlock circuit in its electric wiring.Vital circuit includes: the various safety switchs of elevator, are in electrical series connection, include elevator safety clamp switch, governor switch, high-low limit switch, emergency stop switch, buffer switch, broken step chain device etc.And door interlock switch loop comprises: the Room door electric switch having building all from top to bottom, the wire of car door electric switch and these switches of connection.
For the reason of generator gate interlocking circuit/vital circuit fault, major embodiment is following two kinds:
One, service personnel forgets the shorting stub of dismounting door lock after having overhauled elevator, and elevator is run by when short circuit at gate interlock electric loop:
When Lift out of order, especially during door lock et out of order, service personnel in order to enable elevator run up and down, easy-to-look-up fault, often use elevator(lift) machine room, elevator is made to enter maintenance model, the mode of short circuit door lock circuit makes elevator people operate maintenance slow running, by converge two short circuits of all Rooms door at machine room, equal all Room doors of elevator temporarily by short circuit, forever be in conducting state, even if Room door is opened, apparatus for controlling elevator also thinks that hoistway door shuts possibly.Because at this moment elevator is in inspecting state, whether run and controlled by service personnel, so be safe from danger.Then service personnel enters into the car top in hoistway, starts the upper and lower operation of overhauling elevator and carries out malfunction elimination.After latch failure is got rid of, service personnel ejects from hoistway sedan-chair and comes door ground, the Room, turns round and the switch of elevator car top is converted to normal mode from maintenance model, and elevator can run by express automatically.But often at this moment, many service personnels have forgotten gets back to the shorting stub of elevator(lift) machine room dismounting gate interlock, causes elevator to be run by when short circuit at gate interlock circuit.In this case, apparatus for controlling elevator thinks that loop of the door lock is communicated with all the time, and Room door is closed well, can run by express.Such as elevator express runs to certain layer of door-opened elevator turnover people, but due to gate interlock electric loop at machine room by short circuit, also be considered to door even if open the door shut, elevator when Room door is opened probably occur and runs up and down, the generation of the extremely miserable accident causing elevator " shearing " to be hurted sb.'s feelings.
At present for the problem of " forget after service personnel maintenance elevator and remove door lock shorting stub ", industry often adopts modes such as maintainer's preach, criticism, punishment.But there are nearly 4,000,000 elevators in the whole nation, thousands upon thousands maintenance repair and maintenance personnel, the attainment of individual, quality of repair and maintenance unit etc. varies, and it is perfectly safe to accomplish by people.Some service personnel still can be forgotten because of the reason in self or the external world and removes gate interlock shorting stub, and the accident causing elevator to be hurted sb.'s feelings occurs.
Two, the long-time elevator door interlock circuit/vital circuit resistance constantly run increases:
Along with the operation that elevator is long-term, the reason such as binding post oxidation, gate interlock circuit/safety circuit conductor oxidation in the arcing of elevator door electrical contact, oxidation, gate interlock circuit/vital circuit, gate interlock circuit/vital circuit resistance is finally caused to increase, especially to the elevator being operated in hectic fever environment, low temperature environment, seashore many salts air ambient, the resistance of gate interlock circuit/vital circuit more easily increases.
Below for certain office block elevator of 20 layers:
| The elevator time limit | Room door resistance | Gate resistance |
| 3 months | 7 ohm | 6 ohm |
| 1 year | 9.4 ohm | 6 ohm |
| 2 years | 11.7 ohm | 6.7 ohm |
| 3 years | 13 ohm | 7 ohm |
| 4 years | 14 ohm | 7.2 ohm |
| 5 years | 18 ohm | 7.5 ohm |
| 8 years | 34 ohm | 10 ohm |
As can be seen from the above data, the resistance of elevator hall, car door lock is all increasing with elevator tenure of use, and particularly Room door resistance, has turned over more than one times at 5 years internal resistance values, and after 8 years, resistance reaches original 5 times unexpectedly.Of course not every platform elevator all can have so significant change, but the rule of change is the same, early or late.Once this phenomenon occurs, from first few months, within tens days, go out once, within slowly several days, go out once, phenomenon is hidden, is not easy to find.
But for service personnel, elevator shows as failure warning, cannot normally run, even elevator malfunction.Above-mentioned elevator faults performance the service personnel at scene can be allowed to think only contactless switch itself there occurs problem, but after having changed contactless switch, may deal with problems temporarily, but also often can there is alarm issue in elevator in the near future; Sometimes after people rescues from elevator solution by service personnel, elevator power-off, power on after, elevator alarm eliminates temporarily, but do not cross and how long can produce alarm issue again, sometimes just reported fault, service personnel is being rushed on on-the-spot road, and elevator is again good, repeatedly such " soft " fault, but result in service personnel and often overhaul and cannot tackle the problem at its root.
Therefore, for elevators field, special in old elevator just at work, how fundamentally can solve elevator door interlock circuit/vital circuit due to long-term use arcing, oxidation and the elevator problem that causes can carry out predicting and early warning before fault occurs, become the target of emphasis that those skilled in the art study all the time and pursuit.
Utility model content
For solving the problem of existing elevator door interlock circuit/vital circuit fault, the utility model provides a kind of elevator door interlock circuit/vital circuit failure detector, whether forgotten by the angle trouble hunt ing personnel of gate interlock circuit/safety circuit voltage value and take off gate interlock circuit/vital circuit shorting stub, and judge by the magnitude of voltage of gate interlock circuit/vital circuit the requirement that can gate interlock circuit/vital circuit meet elevator and normally run, play the object prevented trouble before it happens.
The utility model provides a kind of elevator door interlock circuit/vital circuit failure detector, this device comprises the Voltage measure, warning device, the guidance panel that are connected with controller respectively, Voltage measure has terminal A, B, C, terminal A is connected on the node between power supply and vital circuit, terminal B is connected on the node between vital circuit and gate interlock circuit, and terminal C is connected on the node between gate interlock circuit and door lock circuit contactless switch.
The utility model is by judging that the mode of gate interlock circuit/safety circuit voltage value judges that whether gate interlock circuit/vital circuit is by short circuit, as by short circuit, detecting device is reported to the police, it is out of service to control elevator, shorting stub is dismantled by mandatory prompting service worker, avoids forgetting due to service worker and takes off shorting stub and the elevator accident caused.
Further, gate interlock loop comprises Room door lock circuit and the car door lock circuit of series connection, and Voltage measure has terminal D, and terminal D is connected on the node between Room door lock circuit and car door lock circuit.
The utility model is before elevator door interlock circuit/vital circuit goes wrong, and the problem whether opposite house interlocking circuit/vital circuit exists potentiality judges, reports to the police, avoided the generation of the elevator accident that door lock circuit causes before accident occurs.In addition, the utility model alleviates the work capacity of repair and maintenance personnel, does not need to check gate interlock contact during each customary elevator maintain and protection, but is detected by elevator door interlock circuit of the present utility model/vital circuit failure detector.
Further, controller is also connected with photosensor, by the electrical contact that photosensor is located at Room door/Elevator landing time gate just to Room door electrical contact on; Counting machine is provided with in controller.
The utility model innovatively have employed the technological means of monitoring electrical contact arcing, by the information such as the probability of the number of times of concrete electrical contact arcing, intensity, generation effectively accomplish fault occur before maintenance elevator, prevent trouble before it happens.
Further, controller also distinguishes connected storage and the network equipment.
Further, warning device is buzzer phone, and guidance panel is touch-screen/button panel.
The beneficial effects of the utility model are: the utility model is by judging that the size of elevator door interlock circuit/safety circuit voltage value judges whether gate interlock circuit/vital circuit is operated in safe range, and it is potential to elevator door interlock circuit/vital circuit by the variation tendency of opposite house interlocking circuit/safety circuit voltage value, the problem of gradually changeable carries out early warning, reminded before the elevator faults that gate interlock circuit/vital circuit causes, play the effect checked erroneous ideas at the outset, when gate interlock circuit/vital circuit magnitude of voltage close to or when exceeding the safety value of in advance setting, then report to the police, remind maintainer's maintenance.
The utility model can be applied, be installed in all elevators of using on; particularly for the old elevator used; the utility model does not need to carry out large change to the elevator of work on hand; the effect to elevator door interlock circuit/vital circuit fault detection can be played, can say that the owner for vast use elevator has propped up one " umbrella ".
In addition, the utility model adopts technology of Internet of things, the magnitude of voltage of gate interlock circuit/vital circuit is sent to monitoring and control centre or service worker in real time, is convenient to solve a problem promptly.
Accompanying drawing explanation
Fig. 1 is by the view of elevator door interlock circuit/vital circuit failure detector access lift loop.
Fig. 2 is by the using state schematic diagram of elevator door interlock circuit/vital circuit failure detector access lift loop.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed explanation and explanation are carried out to elevator door interlock circuit/vital circuit failure detector of the present utility model.
As shown in Figure 1, 2, a kind of elevator door interlock circuit/vital circuit fault detection method, elevator to be keeped in repair or after annual test at service personnel, can elevator operation mode be changed to the normal pattern run from maintenance model, after detecting device of the present utility model detects that elevator returns to the detection signal of operational mode from maintenance model, comprise the steps
S1: after controller receives detection signal, the magnitude of voltage U of control voltage detector respectively between detection terminal A, B
aB, the magnitude of voltage U between terminal A, D
aD, the magnitude of voltage U between terminal A, C
aC;
S2: controller obtains magnitude of voltage U
aB, U
aD, U
aC;
S3: controller judges that whether gate interlock circuit/vital circuit is by short circuit in the following way:
If U
aB=U
aD< U
aC, warning device sends Room door lock circuit and is reminded by short circuit, controller export elevator cannot automatically run, can only the signal of inspection travel;
If U
aB=U
aD=U
aC≠ 0V, warning device sends Room door lock circuit, car door lock circuit is all reminded by short circuit, controller export elevator cannot automatically run, can only the signal of inspection travel;
If U
aB=U
aD=U
aC=0V, warning device sends vital circuit, Room door lock circuit, car door lock circuit are all reminded by short circuit, controller export elevator cannot automatically run, can only the signal of inspection travel;
If U
aB< U
aD< U
aC, gate interlock circuit, vital circuit be not all by short circuit, and controller exports the automatic run signal of elevator, and elevator enters automatic running state.
It should be noted that, detection signal of the present utility model includes but not limited to door lock contactless switch on-state feedback signal, generally, needs door lock contactless switch to connect the voltage detecting just carrying out gate interlock circuit, vital circuit.But, as long as after meeting gate interlock circuit, vital circuit formation power circuit, conducting, just detecting device of the present utility model and method of inspection can be used, the concrete setting when detecting or detect frequency, those skilled in the art can carry out the rationally selection of wisdom under enlightenment of the present utility model.The problem pulling up shorting stub is forgotten for solving maintainer specially, this detection signal can comprise elevator enters operational mode signal from maintenance model, that is, under the prerequisite of setpoint frequency/time detecting, when elevator enters operational mode from maintenance model, namely the utility model carries out one-time detection, forgets pull out shorting stub and the safety problem produced thoroughly to solve maintainer.
Judge that gate interlock circuit/vital circuit is by after short circuit, warning device of the present utility model sends warning, and elevator quits work, and notice service personnel pulls out shorting stub.
The magnitude of voltage U that controller will be measured at every turn
aCupload and be stored to cloud data bank; By magnitude of voltage U
aCwith the threshold value U of setting
tcontrast, if U
aCbe greater than U
t, then maintainer's opposite house interlocking circuit/vital circuit electrical contact is pointed out to overhaul; Concrete detection comprises the detection of contactless switch, circuit etc. in opposite house interlocking circuit/vital circuit, is then solved the problem of gate interlock circuit/vital circuit fault by modes such as polishing, replacing contacts; Threshold value U
tfor the voltage sum of the condition Xiamen interlocking circuit and vital circuit that meet the normal adhesive of door lock circuit contactless switch.
Certainly, under technology enlightenment of the present utility model, also the magnitude of voltage of door lock electrical contact can be taken into account, threshold value U in this case
tcomprise door lock electrical contact voltage, gate interlock circuit, vital circuit pressure drop and, the voltage relative constancy of wire, threshold value U
tshould be producer according to the degree of aging of different floor and door lock electrical contact, not affect one under the condition that elevator normally runs comprehensively not fixed value, or the authority value provided by national technical supervising department.
If U
aCbe less than U
t, then elevator normally works.
The utility model constantly records the voltage drop value of gate interlock circuit/vital circuit, prevents trouble before it happens, and solves gate interlock circuit/vital circuit problem before the elevator faults caused in gate interlock circuit/vital circuit occurs.For the elevator of the different number of plies, the detection threshold of setting of the present utility model is different, concrete threshold value U
tvalue according to gate interlock circuit or vital circuit, be divided into two kinds of situations, for gate interlock circuit, the voltage sum that threshold value Rv is the condition Xiamen interlocking circuit and vital circuit that meet the normal adhesive of door lock circuit contactless switch, in other words, be lowest reliable operating voltage that the voltage meeting door lock contactless switch or the normal adhesive of vital circuit contactless switch is door lock contactless switch or vital circuit contactless switch.
The utility model realizes the function to elevator door interlock circuit/vital circuit fault by elevator door interlock circuit/vital circuit failure detector, this device comprises the Voltage measure, warning device, the guidance panel that are connected with controller respectively, Voltage measure has terminal A, B, C, terminal A is connected on the node between power supply and vital circuit, terminal B is connected on the node between vital circuit and gate interlock circuit, and terminal C is connected on the node between gate interlock circuit and door lock circuit contactless switch.Gate interlock loop comprises Room door lock circuit and the car door lock circuit of series connection, and Voltage measure has terminal D, and terminal D is connected on the node between Room door lock circuit and car door lock circuit.Controller is also connected with photosensor, by the electrical contact that photosensor is located at Room door/Elevator landing time gate just to Room door electrical contact on; Counting machine is provided with in controller.Controller also distinguishes connected storage and the network equipment.Warning device is buzzer phone, and guidance panel is touch-screen/button panel.
The utility model is by memory storage elevator door interlock circuit/safety circuit voltage value and corresponding time thereof, memory device is connected with controller, by means of Internet of Things, the utility model also comprises the network equipment, be connected with controller, by gate interlock circuit/vital circuit resistance value information, temporal information, elevator address information, alarm message, elevator reparing information displaying in handling at the bottom of railway carriage or compartment/sedan-chair top/sedan-chair wall/sedan-chair/place easily observed of the other wall etc. of Room door/Room door, by Internet of Things, above-mentioned information is sent to service worker handheld client end or each elevator producer simultaneously, the terminal etc. of government regulator.More specifically, warning device of the present utility model is buzzer phone, each electrical contact, controller are connected with guidance panel, and guidance panel is touch panel, can be set and control elevator door interlock circuit/vital circuit failure detector by guidance panel.Controller of the present utility model can adopt the computing machine that micro controller system, PLC are even common.
In addition, elevator door interlock circuit/vital circuit failure detector of the present utility model also comprises the photosensor be connected with controller, faces on the gate of the Room door electrical contact when photosensor is located at each electrical contact side or Elevator landing; Counting machine is provided with in controller 7.
For the process of door lock electrical contact oxidation above, be that arcing causes mostly, and arcing can produce certain high light, contact also has certain temperature rise.Therefore, the utility model from the instant angle detecting door lock of elevator contact arc discharge, by the number of times of arcing or intensity as the foundation judging elevator whether et out of order.
The utility model is at the other photosensor adding detection phenomenon of arc discharge and occur of the Room door electrical contact of elevator, can be photoconductive cell, photodiode, aerotron etc., whether arcing is had during for detecting the closing of contact, disconnection, the utility model controller can detect arcing number of times, when exceeding the number of times of setting, illustrate that phenomenon of arc discharge may cause gate interlock circuit/vital circuit et out of order, now send warning, for arcing number of times, those skilled in the art are rationally arranged according to the actual conditions of elevator and experience.Also position that can be corresponding on gate installs photosensitive, temperature sensing element additional, the utility model can by the switch position of sensor terminal facing to the electrical contact of Room door, so only need install a set of photosensitive, temperature sensing element additional, the moment of flat bed open and close door just can be run at elevator, arcing or the temperature rise situation of door lock electrical contact detected, as basis for estimation.Certainly, in order to improve the accuracy that electrical contact arcing judges, the contact temperature rise comprehensive descision that preferably high light and arcing produce comes the most accurate.But considering cost factor, also can only lean on the judgement of photosensor to determine, can be that the intensity index of the light of arcing is reported to the police.
What the utility model adopted is utilizes the mode obtaining gate interlock circuit/safety circuit voltage value to judge elevator door interlock circuit/vital circuit whether et out of order, gate interlock circuit comprises the electrical contact of Room door, gate in building and is connected the wire of these door contacts, judge that gate interlock circuit/vital circuit whether may et out of order, and current gate interlock circuit/vital circuit is presented on the telltale of each floor, the public also can learn, if may exception be there is in elevator, remind public attention, prompting elevator has problem, does not take elevator.In addition, the utility model utilizes elevator technology of Internet of things, the pressure drop information of relevant gate interlock circuit/vital circuit is passed out the long-range monitoring and control centre of elevator maintain and protection unit, the monitoring and control centre of elevator producer far away from strange land, the monitor supervision platform of local offices, as problem analysis, the foundation of pinpointing the problems and cloud data, and judged whether to carry out check processing to loop of the door lock by professional.
Under technology enlightenment of the present utility model, the magnitude of voltage obtained under gate interlock circuit/vital circuit mode of operation also can judge gate interlock circuit/vital circuit whether et out of order, magnitude of voltage as gate interlock circuit/vital circuit has increased to certain value, the voltage that the virtual voltage out of reach door lock contactless switch of the door lock contactless switch of then connecting with gate interlock circuit/vital circuit normally works, elevator door is caused not close, the method of detecting gate interlocking circuit/safety circuit voltage value, without the need to gate interlock circuit/vital circuit being isolated, belongs to " online " mode.
In addition, under technology of the present utility model enlightenment, those skilled in the art also can detect other portion voltage in lift circuit to judge other failure problems of elevator, simultaneously can a part of circuit in detecting gate interlocking circuit/vital circuit.Under technology enlightenment of the present utility model, elevator door interlock circuit/vital circuit fault detection method of the present utility model can be applied in the control setup and function being integrated into whole elevator in whole elevator control method, by elevator door interlock circuit/vital circuit failure detector of the present utility model and function.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all do in the utility model flesh and blood any amendment, equivalent to replace and simple modifications etc., all should be included within protection domain of the present utility model.
Claims (5)
1. elevator door interlock circuit/vital circuit failure detector, it is characterized in that: this device comprises the Voltage measure, warning device, the guidance panel that are connected with controller respectively, Voltage measure has terminal A, B, C, terminal A is connected on the node between power supply and vital circuit, terminal B is connected on the node between vital circuit and gate interlock circuit, and terminal C is connected on the node between gate interlock circuit and door lock circuit contactless switch.
2. elevator door interlock circuit/vital circuit failure detector according to claim 1, it is characterized in that: gate interlock loop comprises Room door lock circuit and the car door lock circuit of series connection, Voltage measure has terminal D, and terminal D is connected on the node between Room door lock circuit and car door lock circuit.
3. elevator door interlock circuit/vital circuit failure detector according to claim 2, it is characterized in that: controller is also connected with photosensor, by the electrical contact that photosensor is located at Room door/Elevator landing time gate just to Room door electrical contact on; Counting machine is provided with in controller.
4. the elevator door interlock circuit/vital circuit failure detector according to Claims 2 or 3, is characterized in that: controller also distinguishes connected storage and the network equipment.
5. elevator door interlock circuit/vital circuit failure detector according to claim 1, is characterized in that: warning device is buzzer phone, guidance panel is touch-screen/button panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520935038.8U CN205187602U (en) | 2015-11-23 | 2015-11-23 | Lift -cabin door interlock circuit safety circuit fault detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520935038.8U CN205187602U (en) | 2015-11-23 | 2015-11-23 | Lift -cabin door interlock circuit safety circuit fault detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205187602U true CN205187602U (en) | 2016-04-27 |
Family
ID=55780619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520935038.8U Withdrawn - After Issue CN205187602U (en) | 2015-11-23 | 2015-11-23 | Lift -cabin door interlock circuit safety circuit fault detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205187602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236251A (en) * | 2015-11-23 | 2016-01-13 | 黄一宸 | Fault detection device and method for door interlock circuit/safety circuit of elevator |
| CN109626163A (en) * | 2018-12-21 | 2019-04-16 | 深圳技术大学（筹） | The monitoring method and device of door-opened elevator operation troubles |
-
2015
- 2015-11-23 CN CN201520935038.8U patent/CN205187602U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236251A (en) * | 2015-11-23 | 2016-01-13 | 黄一宸 | Fault detection device and method for door interlock circuit/safety circuit of elevator |
| CN105236251B (en) * | 2015-11-23 | 2017-07-11 | 黄一宸 | A kind of elevator door interlock circuit/safety circuit failure detector and method |
| CN109626163A (en) * | 2018-12-21 | 2019-04-16 | 深圳技术大学（筹） | The monitoring method and device of door-opened elevator operation troubles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20170711 |
|
| AV01 | Patent right actively abandoned |