Elevator electrical door lock protective circuit again
Technical field
The utility model relates to elevators field, particularly relates to a kind of elevator electrical door lock protective circuit again.
Background technology
The electric door lock circuit of elevator is serially connected in after vital circuit, rearward, can just carry out the detection of electric door lock circuit at vital circuit regular event.
First detecting element of electric door lock circuit is contactless switch, and the enterprising line level of entrance point on the open contact of electric door lock circuit on contactless switch and controller (in PLC machine or microcomputer) shifts.Controller is have entrance point signal, without the condition criterion carried out before elevator operation in programming logic computing.
When contactless switch obtains electric adhesive, the entrance point of controller there is signal, as long as elevator has run signal (main order is registered or called registration outward) elevator to get final product starting operation under normal auto state, arrive the parking of target stop flat bed to open the door, the registering signal (calling registration outside main order registration or same direction) of target stop is disannuled a call automatically simultaneously, electric door lock circuit disconnects, contactless switch dead electricity.
But, in use due to various reason, as service worker carries out artificial short circuit, the adhesion of door lock contactless switch et out of order makes the contact on contactless switch not be separated, the entrance point of controller is burnt to connect always and is had signal, the testing result of controller is normal starting operation at any time, no matter now open door or shut up the door carefully, on controller, testing result is all the same, under the electric door lock of elevator is in runaway condition, if there is run signal, elevator is starting operation at once, now elevator door is likely opened, enabling starting operation elevator is least safe, likely there is passenger and crash into hoistway or by danger such as car shearings, cause personal injury accidents.Therefore, need electric wiring to be improved in this case, the electric door lock circuit of elevator is protected again.
Summary of the invention
Technical problem to be solved in the utility model is, provides the simple elevator electrical door lock of a kind of structure protective circuit again, can be the status information that electric life controller provides more perfect, expands the signal source of electric life controller.
Technical problem to be solved in the utility model is also; a kind of elevator electrical door lock protective circuit is again provided; the logic state of car door interlock contactless switch, landing interlock contactless switch, enabling location switch and door-closing in-place switch can be understood intuitively, be easy to search and maintenance failure.
In order to solve the problems of the technologies described above, the utility model provides a kind of elevator electrical door lock protective circuit again, comprising: the landing interlock circuit of each layer, car door interlock circuit, car door interlock contactless switch and landing interlock contactless switch; The landing interlock circuit of described each layer, car door interlock circuit, car door interlock contactless switch are connected in series successively, access described landing interlock contactless switch between the landing interlock circuit of described each layer and car door interlock circuit; The input end of the mouth access electric life controller of described car door interlock contactless switch and described landing interlock contactless switch.
As the improvement of such scheme, described car door interlock contactless switch and landing interlock contactless switch access the input end of electric life controller by open contact.
As the improvement of such scheme, the input end of the enabling location switch mouth of elevator and door-closing in-place output switching terminal access electric life controller.
As the improvement of such scheme, the enabling location switch mouth of parallel communications elevator and door-closing in-place output switching terminal access the input end of electric life controller in a parallel fashion.
As the improvement of such scheme, enabling location switch mouth and the door-closing in-place output switching terminal of serial communication elevator access the input end of electric life controller in a serial fashion by trailing cable line.
As the improvement of such scheme, described elevator electrical door lock again protective circuit is serially connected with the mouth of elevator safety circuit by the landing interlock circuit of described each layer.
As the improvement of such scheme, described electric life controller is provided with multiple LED, described LED and described car door interlock contactless switch, landing interlock contactless switch, the action of enabling location switch, door-closing in-place switch one_to_one corresponding.
As the improvement of such scheme, described electric life controller comprise in controller main frame, programmable logic controller (PLC), microcomputer any one.
Enforcement the beneficial effects of the utility model are:
The mouth of car door interlock contactless switch, landing interlock contactless switch, enabling location switch and door-closing in-place switch is accessed the input end of electric life controller by elevator electrical door lock again protective circuit; the Real-time Logic state of electric life controller to car door interlock contactless switch, landing interlock contactless switch, enabling location switch and door-closing in-place switch, elevator safety circuit is detected; for electric life controller provides more perfect status information; expand the signal source of electric life controller, facilitate electric life controller to the control of elevator and protection.
Simultaneously, by arranging respectively and described car door interlock contactless switch, landing interlock contactless switch, the action of enabling location switch, door-closing in-place switch LED one to one on electric life controller, make car door interlock contactless switch, landing interlock contactless switch, the Real-time Logic state of the action of enabling location switch and door-closing in-place switch shows with bright, the state of going out of LED, be convenient to handler very clear in maintaining, be easy to fault cause is found and fixes, make handling labor more simple.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model elevator electrical door lock protective circuit again;
Fig. 2 is another structural representation of the utility model elevator electrical door lock protective circuit again.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, described elevator electrical door lock again protective circuit comprise landing interlock circuit M, the car door interlock circuit N of each layer, car door interlock contactless switch 2 and landing interlock contactless switch 3.The landing interlock circuit M of described each layer, car door interlock circuit N, car door interlock contactless switch 2 are connected in series successively, access described landing interlock contactless switch 3 between the landing interlock circuit M of described each layer and car door interlock circuit N.The input end of the mouth access electric life controller of described car door interlock contactless switch 2 and described landing interlock contactless switch 3.
Particularly; build elevator electrical door lock again protective circuit time; first the landing interlock circuit M of each layer is connected on after elevator safety circuit P; to connect again car door interlock circuit N and car door interlock contactless switch 2, increase a landing interlock contactless switch 3 at landing interlock circuit M and car door interlock circuit N centre simultaneously.
The landing interlock contactless switch 3 of each layer is for detecting the closed situation of each layer Room door; Car door interlock contactless switch 2 is for detecting the closed situation of gate.
It should be noted that, under normal circumstances, when elevator door reaches position (opening completely) completely, landing interlock contactless switch 3 and car door interlock contactless switch 2 disconnect; When elevator door closes put (cutting out completely) in place completely, landing interlock contactless switch 3 and car door interlock contactless switch 2 close.
During work; landing interlock contactless switch 3 and car door interlock contactless switch 2 detect the closed situation of each layer Room door and gate in real time; and export detected closed situation to electric life controller; for electric life controller provides more perfect status information; expand the signal source of electric life controller; facilitate electric life controller to the control of elevator, realize again protecting the electric door lock circuit of elevator.
More preferably, described electric life controller can be any one in controller main frame, programmable logic controller (PLC), microcomputer.
More preferably, described car door interlock contactless switch 2 and landing interlock contactless switch 3 access the input end of electric life controller by open contact, and alerting ability is strong.
More preferably, described elevator electrical door lock again protective circuit be serially connected with the mouth of elevator safety circuit P by the landing interlock circuit M of described each layer.
It should be noted that, when just carrying out the detection of elevator electrical door lock protective circuit again after elevator safety circuit P normal reliable, realize the second protection to elevator, reliability is strong.
As shown in Figure 2, the input end of the mouth access electric life controller of described car door interlock contactless switch S1 and described landing interlock contactless switch S4, the input end of the enabling location switch S2 mouth of elevator and door-closing in-place switch S 3 mouth access electric life controller.
Enabling location switch S2 is for detecting the switching value of opening the door and putting in place; Door-closing in-place switch S 3 is for detecting the switching value of door-closing in-place.
It should be noted that, under normal circumstances, when elevator door reaches position (opening completely) completely, enabling location switch S2 disconnects; When elevator door closes put (cutting out completely) in place completely, door-closing in-place switch S 3 disconnects.
During work; enabling location switch S2 and door-closing in-place switch S 3 detect the switch conditions of elevator door in real time; and export detected switch conditions to electric life controller; for electric life controller provides more perfect status information; expand signal source; facilitate electric life controller to the control of elevator, realize again protecting the electric door lock circuit of elevator.
More preferably, the enabling location switch mouth of parallel communications elevator and door-closing in-place output switching terminal access the input end of electric life controller in a parallel fashion, and independence is strong.
More preferably, enabling location switch mouth and the door-closing in-place output switching terminal of serial communication elevator access the input end of electric life controller in a serial fashion by trailing cable line, the on-off signal of enabling location switch and door-closing in-place switch is transmitted by trailing cable line, effectively can prevent communication countermeasures.
More preferably, described electric life controller is provided with multiple LED, described LED and described car door interlock contactless switch, landing interlock contactless switch, the action of enabling location switch, door-closing in-place switch one_to_one corresponding.
It should be noted that, handler records bright, the state of going out of each LED in electric life controller each entrance point in all cases when elevator normally runs.When Lift out of order, bright, the go out state of handler to the LED on electric life controller corresponding to car door interlock contactless switch, landing interlock contactless switch, enabling location switch, door-closing in-place switch are observed, LED state under faulty condition is carried out contrast with LED state when normally running judge, be convenient in maintaining very clear, be easy to fault cause is found and fixes, make handling labor more simple.
As from the foregoing; the mouth of car door interlock contactless switch, landing interlock contactless switch, enabling location switch and door-closing in-place switch is accessed the input end of electric life controller by elevator electrical door lock again protective circuit; the Real-time Logic state of electric life controller to car door interlock contactless switch, landing interlock contactless switch, enabling location switch and door-closing in-place switch, elevator safety circuit is detected; for electric life controller provides more perfect status information; expand signal source, facilitate electric life controller to the control of elevator and protection.Simultaneously, by arranging respectively and described car door interlock contactless switch, landing interlock contactless switch, the action of enabling location switch, door-closing in-place switch LED one to one on electric life controller, make car door interlock contactless switch, landing interlock contactless switch, the Real-time Logic state of the action of enabling location switch and door-closing in-place switch shows with bright, the state of going out of LED, be convenient to handler very clear in maintaining, be easy to fault cause is found and fixes, make handling labor more simple.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.