CN205187603U

CN205187603U - Lift -cabin door interlock circuit safety circuit fault detection device

Info

Publication number: CN205187603U
Application number: CN201520941163.XU
Authority: CN
Inventors: 黄一宸
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-23
Filing date: 2015-11-23
Publication date: 2016-04-27
Anticipated expiration: 2025-11-23

Abstract

The utility model provides a lift -cabin door interlock circuit safety circuit fault detection device, the utility model discloses a whether the mode judge door interlock circuit safety circuit whether judge door interlock circuit safety circuit's resistance value is zero is by the short circuit to take notes corresponding resistance. The utility model discloses a judge the size of lift -cabin door interlock circuit safety circuit resistance, come judge door interlock circuit safety circuit whether to work in normal security range, and the variation tendency through building opposite interlock circuit safety circuit resistance, come lift -cabin door interlock circuit safety circuit potentially, the early warning is carried out to the problem of gradual change nature, reminded before the elevator trouble that gate interlock circuit safety circuit leads to, play nip an evil in the bud's effect, when gate interlock circuit safety circuit's resistance is close perhaps above prior set for safe worth, the alarm can be carried out, remind the maintenance personal to overhaul.

Description

A kind of elevator door interlock circuit/vital circuit failure detector

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, be whether whether 0 trouble hunt ing personnel forget and take off gate interlock circuit/vital circuit shorting stub by gate interlock circuit/vital circuit resistance, and judge by the resistance 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 switching contactor, measurement of resistance device, the warning device that are connected with controller respectively, controller is connected to elevator shorting switch, switching contactor connection door interlocking circuit/vital circuit two ends, measurement of resistance device connects switching contactor.

The utility model by judge gate interlock circuit/vital circuit resistance be whether zero mode judge 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.

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.

Further, controller is connected with guidance panel, 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/vital circuit resistance 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/vital circuit resistance, 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 resistance 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 resistance value 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 gate interlock circuit access elevator door interlock circuit/vital circuit failure detector.

Fig. 2 is view vital circuit being accessed elevator door interlock circuit/vital circuit failure detector.

Fig. 3 is by the using state schematic diagram of gate interlock circuit access elevator door interlock circuit/vital circuit failure detector.

Fig. 4 is using state schematic diagram vital circuit being accessed elevator door interlock circuit/vital circuit failure detector.

In figure,

1, vital circuit contactless switch; 2, vital circuit; 3, photosensor; 4, gate interlock circuit; 5, door lock contactless switch; 6, measurement of resistance device; 7, controller; 8, switching contactor.

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 switching signal of operational mode from maintenance model, as shown in Figure 2, gate interlock circuit 4/ vital circuit 2 is broken from whole lift circuit, accesses detecting device, detecting device measures the resistance value Rn of gate interlock circuit 4/ vital circuit 2, judges whether resistance value Rn is 0.

If resistance value Rn is 0, then judge that gate interlock circuit 4/ vital circuit 2 is by short circuit, send warning, elevator quits work, and notice service personnel pulls out shorting stub.

If resistance value Rn is not 0, the resistance value Rn that detection device records detecting device gathers at every turn, the threshold value Rv of Rn and setting is contrasted; Threshold value Rv comprises the resistance of the wire of door lock electrical contact resistance and gate interlock circuit 4/ vital circuit 2, door lock electrical contact resistance is almost nil for early stage, the resistance relative constancy of wire, threshold value Rv should be producer according to the degree of aging of different floor and door lock electrical contact, do not affecting one under the condition that elevator normally runs comprehensively not fixed value, or the authority value provided by national technical supervising department.

If Rn is less than Rv, then gate interlock circuit 4/ vital circuit 2 normally can work and gate interlock circuit 4/ vital circuit 2 be broken from detecting device, accesses whole lift circuit, this process generally will continue N second, in the present embodiment, the value of N is 0.1 to 5, through the switching time of 0.1 to 5 second, above-mentioned time span can meet the needs that detecting device carries out testing, and gate interlock circuit 4/ vital circuit 2 accesses in whole lift circuit again.If Rn is more than or equal to Rv, detecting device gives the alarm, and prompting maintainer opposite house interlocking circuit 4/ vital circuit 2 is overhauled.Elevator door interlock circuit 4/ vital circuit 2 fault is overhauled, concrete detection comprises the detection of contactless switch, circuit etc. in opposite house interlocking circuit 4/ vital circuit 2, then solves the large problem of gate interlock circuit 4/ vital circuit 2 resistance by modes such as polishing, replacing contacts.The utility model constantly records the resistance value of gate interlock circuit 4/ vital circuit 2, prevents trouble before it happens, and solves gate interlock circuit 4/ vital circuit 2 problem before the elevator faults caused in gate interlock circuit 4/ vital circuit 2 occurs.For the elevator of the different number of plies, the detection threshold of setting of the present utility model is different, the value of concrete threshold value Rv is according to gate interlock circuit 4 or vital circuit 2, be divided into two kinds of situations, it is the resistance value of the condition Xiamen interlocking circuit 4 meeting the normal adhesive of door lock contactless switch 5 for gate interlock circuit 4, threshold value Rv; For vital circuit 2, threshold value Rv is the resistance value of vital circuit 2 under the condition meeting the normal adhesive of vital circuit contactless switch 1.The voltage meeting door lock contactless switch 5 or the normal adhesive of vital circuit contactless switch 1 is the lowest reliable operating voltage of door lock contactless switch 5 or vital circuit contactless switch 1, now needs to ensure that door lock contactless switch 5 or vital circuit contactless switch 1 are operated in lowest reliable operating voltage.

The utility model realizes the function to elevator door interlock circuit 4/ vital circuit 2 fault by elevator door interlock circuit/vital circuit failure detector, the switching contactor 8 comprising controller 7 and be connected with controller 7, measurement of resistance device 6, warning device, controller 7 is connected to elevator shorting switch, obtain elevator returns to operational mode switching signal from maintenance model, switching contactor 8 connection door interlocking circuit 4/ vital circuit 2 two ends, controlled gate interlock circuit 4/ vital circuit 2 to cut out in measurement of resistance device 6 from lift loop by controller 7, measurement of resistance device connects switching contactor 8.The utility model is by memory storage elevator door interlock circuit 4/ vital circuit 2 resistance value and corresponding time thereof, memory device is connected with controller 7, by means of Internet of Things, the utility model also comprises the network equipment, be connected with controller 7, by gate interlock circuit 4/ vital circuit 2 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 7 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 3 be connected with controller 7, faces on the gate of the Room door electrical contact when photosensor 3 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 this feature of arcing 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 3 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 7 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 4/ vital circuit 2 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 probe 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 4/ vital circuit 2 resistance value to judge elevator door interlock circuit 4/ vital circuit 2 whether et out of order, gate interlock circuit 4 comprises Room door in building, electrical contact and the wire being connected these door contacts of gate, whether the resistance judging gate interlock circuit 4/ vital circuit 2 may et out of order, and current gate interlock circuit 4/ vital circuit 2 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, do not take elevator.In addition, the utility model utilizes elevator technology of Internet of things, the resistance of relevant gate interlock circuit 4/ vital circuit 2 and pressure drop information are 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 4/ vital circuit 2 mode of operation also can judge gate interlock circuit 4/ vital circuit 2 whether et out of order, magnitude of voltage as gate interlock circuit 4/ vital circuit 2 has increased to certain value, the normal voltage worked of virtual voltage out of reach door lock contactless switch 5 of the door lock contactless switch 5 of then connecting with gate interlock circuit 4/ vital circuit 2, elevator door is caused not close, relative to the method for detecting gate interlocking circuit 4/ vital circuit 2 resistance value, namely, " off-line " mode that gate interlock circuit 4/ vital circuit 2 is disconnected from whole loop, the method of detecting gate interlocking circuit 4/ vital circuit 2 magnitude of voltage is without the need to isolating gate interlock circuit 4/ vital circuit 2, belong to " online " mode.

In addition, under technology enlightenment of the present utility model, those skilled in the art also can detect the resistance of other parts in lift circuit or voltage to judge other failure problems of elevator, simultaneously can a part of circuit in detecting gate interlocking circuit 4/ vital circuit 2.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

1. elevator door interlock circuit/vital circuit failure detector, it is characterized in that: this device comprises the switching contactor (8), measurement of resistance device (6), the warning device that are connected with controller (7) respectively, controller is connected to elevator shorting switch, switching contactor connection door interlocking circuit (4)/vital circuit (2) two ends, measurement of resistance device connects switching contactor.

2. elevator door interlock circuit/vital circuit failure detector according to claim 1, it is characterized in that: controller is also connected with photosensor (3), 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.

3. elevator door interlock circuit/vital circuit failure detector according to claim 1 and 2, is characterized in that: controller also distinguishes connected storage and the network equipment.

4. elevator door interlock circuit/vital circuit failure detector according to claim 1, is characterized in that: warning device is buzzer phone.

5. elevator door interlock circuit/vital circuit failure detector according to claim 4, is characterized in that: controller is connected with guidance panel, and guidance panel is touch-screen/button panel.