CN1075693A

CN1075693A - Elevator control device

Info

Publication number: CN1075693A
Application number: CN93101277A
Authority: CN
Inventors: 岩田茂富
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1992-02-07
Filing date: 1993-02-02
Publication date: 1993-09-01
Anticipated expiration: 2013-02-02
Also published as: KR930017802A; JP3373220B2; KR960001527B1; TW207983B; JPH05213555A; CN1032053C

Abstract

A kind of elevator control device when car speed is connected VTO circuit-closing contact 30 when specified value is above, is connected BB open contact 31 during the halt instruction of output car.After second, the SD coil 33 detection out gates that detect with the SD relay that slide close instruction to the on-state of VTO circuit-closing contact 30 and BB open contact 31 through T.The SD circuit-closing contact 35 of SD relay is connected in detection by the SD coil, and door closes instruction and detects also with the DC coil 36 of DC relay that out gate closes instruction.Connect the DC open contact 38 of DC relay by the detection of DC coil 36, door open that instruction becomes no information state with the DO coil 39 of DO relay and not out gate open instruction.

Description

Elevator control device

The present invention relates to wirerope formula or hydraulic type elevator control device, relate in particular to the elevator control device that control gate opens and closes under the car sliding condition.

In elevator control device, most in recent years significant micro-computer technologies of development that utilize.Using these technology mostly constitutes.With regard to the control setup of car door that the part as elevator control device is elevator, opening as shown in the flat 2-123088 communique as the spy also all is to use microcomputer etc.

Yet, as the i.e. switching instruction of door of the important instruction of management elevator safety, though for example take place friction force because of braking ratchet wheel descend the holding torque that makes car reduce this drg that can not keep car fault, also can be output with this irrelevant unusually.

The problem that exists in the elevator control device of prior art is, if but car is in a door open region because of halted state, and then might out gate open instruction and make and open.In case braking torque descends, while then car slides and rises or descend.,, also can open the door although then car slides and do not stop if but car arrives the door open region and instruction left by out gate.And, even but car in case by a door open region, while but slide when continuing to rise or descending at car, even but outside the door open region out gate close instruction, if but but export the instruction of opening the door in next time during open region by floor, then can open the door.Therefore, when car slided, the passenger that can take place in the car took advantage of the passenger that treats of field to be held under the arm the breakneck accident in door.

The present invention finishes in order to address the above problem, its purpose is to provide a kind of elevator control device, thereby this device can stop the phenomenon of opening the door in the drg torque decline car sliding mode to guarantee interior passenger of car and the safety of taking advantage of in the field for the treatment of the passenger.

Elevator control gear of the present invention has: the speed detection device that detects car speed; Detect to the car halt instruction detection device of the halt instruction of the electrical motor that drives car; Detect the car slip detection device that car slides when above-mentioned car speed surpassed specified speed when above-mentioned halt instruction detected; The door of exporting the instruction of closing the door during above-mentioned car slides and detects opens and closes command device.

Again, above-mentioned car slip detection device, but when outside the door open region, detecting the halt instruction of giving above-mentioned electrical motor, then detect car and slide by above-mentioned car halt instruction detection device.

In the present invention, detect car speed with the car speed detection device, detect the halt instruction of the electrical motor that drives car with car halt instruction detection device, when detecting above-mentioned halt instruction with car slip detection device, when car speed surpassed specified speed, slip was detected as car.And above-mentioned car slides and closes instruction with a door switching command device out gate when detecting.

And, but when outside the door open region, detecting the halt instruction of giving above-mentioned electrical motor, then detect the car sliding condition by car slip detection device with above-mentioned car halt instruction detection device.

The present invention as mentioned above because have: the car speed detection device that detects car speed; Detect the car halt instruction detection device of the halt instruction of giving the electrical motor that drives car; Detect the car slip detection device that car slides when above-mentioned car speed surpasses specified speed when above-mentioned halt instruction detects; The above-mentioned car door that out gate when detecting closes instruction that slides opens and closes command device, and can not open the door when making car be in sliding mode, thereby reaches the effect for the treatment of passenger safety guaranteeing the passenger in the car and take advantage of.

Again, above-mentioned car slip detection device, but because when outside the door open region, detecting the halt instruction of giving above-mentioned electrical motor by above-mentioned car halt instruction detection device, slide by detecting car, sliding not as car when but action is stopped in the door open region can misoperation, and but the outer car in door open region stops that (car speed d is Om/min) can not make door open yet under the situation, so can reach passenger who guarantees in the car and the effect for the treatment of passenger safety of taking advantage of the field.

Below in conjunction with drawings and Examples explanation the present invention

Fig. 1 represents the integral structure figure of the embodiment of the invention 1;

Fig. 2 is the simulated diagram of the performed program of the microcomputer of the embodiment of the invention 1;

Fig. 3 is the block scheme of embodiments of the invention 1;

Fig. 4 is the simulated diagram by the performed program of the microcomputer of embodiments of the invention 2.

In above-mentioned figure, the 1-car; The 5-electrical motor; 9a, 9b-contactless switch contact: 10-car speed detector; 13-floor lift port ground; 30,41-VTO circuit-closing contact; The 31-BB open contact; 32-on-delay timer; The 33-SD coil; The 34-NCT circuit-closing contact; 35,42-SD circuit-closing contact; The 36-DC coil; The 37-DZ circuit-closing contact; The 38-DC open contact; The 39-DO coil; The 40-DZ open contact; 51-car speed detection device; 52-car halt instruction detection device; 53-car slip detection device; The 54-door opens and closes command device.

Embodiment 1

Fig. 1 is the integral structure figure of the embodiment of the invention 1.In the figure, 1 is the car of elevator, is equipped with that its other end is connected to bob-weight 2 and by around the wirerope 4 that twists on the twisted rope wheel 3 at car upper.

Thereby 5 for making 3 rotations of twisted rope wheel make the electrical motor of car 1 lifting.

The 9a that makes contact of magnet stopper, this restraining coil 7, internal electric source 8 and braking contactor B that the restraining coil 7 that 6 serve as reasons inserts plunger constitutes is connected in series, in case the contactless coil of not shown braking contactor B is subjected to excitation and contactless switch contact 9a is connected, then constitute C/LOOP, thereby restraining coil 7 is subjected to excitation to make the in-to-in plunger leave electrical motor 5.And for example the fruit contactless coil is as the car halt instruction and during demagnetization, then restraining coil 7 demagnetizations, thereby plunger contact electricity motivation 5 stop electrical motor 5 by friction.

Again, 9b also is the contactless switch contact of braking contactor B, if contactless coil is subjected to excitation then connects, if demagnetization then disconnect during the car halt instruction.

10 for inserting the car speed detector that detects car 1 speed of car 1 by lead 11, but but 12 drive the door open region detector of signal for the top that is installed on car 1 and with car 1 lifting out gate on plate 12 positions for the plate, 14 that stops each indication door open region of one of terrace land face corresponding to each floor that is arranged at hoist trunk in, the controlling device for doors of 15 switchings of carrying out for the lower curtate that is arranged at car 1.

16 microcomputers for the switching of the driving of electrical motor 5 and opposite house is controlled.It is by the CPU17 that carries out various calculation process; The ROM18 of the control program of storage CPU17; The RAM19 of the processing data of storage CPU17 etc.; The door of giving the torque instruction a of electrical motor 5 and giving controlling device for doors 15 according to the processing of CPU17 output is opened the delivery port 20 that instruction b and door close instruction c; But the input port 21 of the information of output e and contactless switch contact 9b is opened in input from the car speed d of speed detector 10, from the door of door open region detector 14; Constitute with the bus 22 that is connected above-mentioned CPU17, ROM18, RAM19, delivery port 20 and input port 21.

Fig. 2 is the simulated diagram by the control program of microcomputer 16 execution.

In the figure, the VTO that connects when the car speed d that is detected by speed detector 10 surpasses specified value such as 2m/min makes contact 30, at the contactless coil of above-mentioned braking contactor B demagnetization and the BB open contact 31 when contactless switch contact 9b cuts off, just connected during in the car halt instruction, if the on-delay timer 32 of output signal takes place second in above-mentioned VTO circuit-closing contact 30 and the BB open contact 31 common state continuance T that connect as time more than 0.4 second, detect the SD coil 33 of using relay SD with the slip of car 1, for being connected in series.

Again, the NCT circuit-closing contact 34 that regular door control signal is connected when door closes, detect the shunt circuit of the SD circuit-closing contact of connecting when sliding 35 when detecting with above-mentioned SD coil 33, it is to be connected in series that the door that NCT circuit-closing contact 34 or SD circuit-closing contact 35 detect when connecting and out gate closes command signal c closes the DC coil 36 that instructs with relay DC.

And, but the DZ circuit-closing contact 37 that the door of door open region detector 14 was connected when opening signal c and detecting, the DC circuit-closing contact of connecting when above-mentioned DC coil 36 detects 37, the door that regular door control signal gate is opened or above-mentioned magnet stopper 6 detects when normally not detecting the DC open contact 38 of the relay DC that connects when sliding and DZ circuit-closing contact 37 with DC open contact 38 common connections and command signal b left by out gate during the no information of above-mentioned DC coil 36 open instruction with the DO coil 39 of relay DO for being connected in series.

And the other end of VTO circuit-closing contact 30, NCT circuit-closing contact 34, SD circuit-closing contact 35 and DZ circuit-closing contact 37 is connected power supply V; The other end ground connection of SD coil 33, DC coil 36 and DO coil 39.

Below, Fig. 3 illustrated the block diagram of this embodiment 1.But but, arrive the door open region but detect car 1 by the 37 door open region detection devices 50 that constitute that make contact by door open region detector 14 and DZ; Detect car speed d by the 30 car speed detection devices 51 that constitute that make contact by car speed detector 10 and VTO; Halt instruction is promptly exported in the demagnetization that detects the contactless coil of brake on device B by the car halt instruction detection device 52 that is made of contactless coil 9b and BB open contact 31.

Again, by car slip detection device 53 as SD coil 33, though export the car halt instruction and BB open contact 31 is connected from the output of car halt instruction detection device 52, the car speed of exporting from car speed detection device 51 for example detects the slip of the on-state of VTO circuit-closing contact 30 as car 1 when 2m/min is above.

And, by constitute a switching command device 54 by NCT circuit-closing contact 34, SD circuit-closing contact 35, DC coil 36, DC open contact 38 and DO coil 39, under normal circumstances, but according to the output of door open region detection device with command signal b opened by regular door control control signal out gate or door closes command signal c; When detecting the slip of car 1 by car slip detection device 53, although be in regular door control control signal state, also out gate closes instruction c.

Below, Fig. 2 is illustrated the action of the foregoing description 1.Car 1 carries out lifting by electrical motor 5 by rope sheave 3 and wirerope 4, in the lifting process, magnet stopper 6 is by connecting contactless switch contact 9a to the contactless coil excitation of braking contactor B, restraining coil 7 excitations, the plunger 15 of inserting in the restraining coil 7 breaks away from electrical motor 5.

For wanting car 1 to stop, by car halt instruction demagnetization contactless switch contact 9a is cut off by contactless coil, magnet stopper 6 stops electrical motor 5 owing to restraining coil 7 demagnetizations make plunger contact electricity motivation 5 produce friction.

Again, if but car 1 in lifting or stop at predetermined floor and make door open region detector 14 relative with plate 12, but then car 1 is opened door as the door open region and is exported e and send into microcomputer 16.But under the situation that detects the door open region, a car door and take advantage of door (all not shown) to open.

In this case, give controlling device for doors 15 if command signal b left by slave microcomputer 16 out gates, then controlling device for doors 15 makes car door and takes advantage of a door to open; If out gate closes signal c, then close the door.

Detect car speed d and send into microcomputer 16 by car speed detector 10 again.

Below with reference to Fig. 2 the operation that control gate opens and closes is described.Car 1 is in the lifting process, and car speed d is more than 2m/min, and contactless coil is subjected to excitation and contactless switch contact 9a and 9b to be in on-state.So be in excited state owing to contactless switch contact 9a is in on-state restraining coil 7, thereby magnet stopper 6 does not produce braking.At this moment, microcomputer 16 makes BB open contact 31 connect owing to contactless switch contact 9b cuts off.

Again, car 1 is in the lifting process, because car speed d is more than 2m/min, so microcomputer 16 is connected VTO circuit-closing contact 30.Therefore, because VTO circuit-closing contact and 31 connections of BB open contact, so SD coil 33 is in no information state.

If car 1 arrives predetermined floor, export to microcomputer 16 but door is opened output e by door open region detector 14, then microcomputer 16 is connected circuit-closing contact 37.

At this state, when car 1 stops, the contactless coil demagnetization, contactless switch contact 9a and 9b cut off.If magnet stopper 6 is normal, then because contactless switch contact 9a cuts off, so restraining coil 7 demagnetizations, magnet stopper 6 actions stop electrical motor 5.

Microcomputer 16 because contactless switch contact 9b cuts off, therefore makes BB open contact 31 connect.And microcomputer 16 when car 1 stops, is Om/min or below 2m/min in case detect speed d from the output of car speed detector 10, then cuts off VTO circuit-closing contact 30.Therefore, SD coil 33 is in no information state.

As mentioned above, under magnet stopper 6 normal circumstancess, SD coil 33 is in no information state usually, and SD circuit-closing contact 35 disconnects.

Therefore, at magnet stopper 6 just often, the switching of door is controlled by regular door control signal.When but car 1 was in the door open region, if regular door control signal is opened for door, then microcomputer 16 cut off NCT circuit-closing contact 34, makes DC coil 36 no information, thereby connects DC open contact 38.

Because DZ circuit-closing contact 37 and DC open contact 38 are connected, institute is so that DO coil 39 detects and instruction b left by out gate.

Again, if when regular door control control signal closes for door, then NCT circuit-closing contact 34 is connected, and DC coil 36 is detected and out gate closes instruction c.At this moment, DC coil 36 is a detected state, so because DC open contact 38 cuts off DO coil 39 no information, instruction b do not left by out gate.

The following describes the situation that there is fault in magnet stopper 6.In this case, though contactless coil according to car halt instruction demagnetization, contactless switch contact 9a cuts off, car 1 but with as the speed more than the 2m/min rises or decline.

Microcomputer 16, according to the output of car detector 10, detecting car speed d, to reach 2m/min above and connect VTO circuit-closing contact 30, detects and then connect BB open contact 31 when contactless switch contact 9b cuts off.

On-delay timer 32, one is worked as the state continuance T second of VTO circuit-

closing contact

30 and 31 connections of BB open contact, just produces output signal.Like this, SD coil 33 is detected.

SD coil 33 makes contact 35 by detect connecting SD, and DC coil 36 detects and out gate closes instruction true signal c.

Again, detect, cut off DC open contact 38, make DO coil 39 be in no information state usually by DC coil 36.Therefore, even regular door control signal is that door open and close road contact 34 is also invalid for disconnecting, thereby irrelevant with it, out gate closes instruction, stops door to open command signal b.

Therefore, because of the fault car 1 of magnet stopper 6 slides under the situation that rises or descend with dead slow speed, close signal stopping the floor out gate, even so still slide when passing through next floor with dead slow speed, still out gate closes signal.

And microcomputer 16 carries out above-mentioned computing with the cycle of for example 50msec.

In addition, why using on-delay timer 32, is to go out for fear of the flase drop that is caused as suddenly stopping back or shaking of boarding by car 1.

As mentioned above, embodiment 1 is, if the contactless coil demagnetization of braking contactor B, when having detected halt instruction output, then connect BB open contact 31, car speed d is with as being in the state continuance that rises or descend under the situation of T second more than the 2m/min, then connect VTO circuit-closing contact 30, VTO circuit-closing contact 30 continues T during second with BB open contact 31 on-states, relay SD action detects the slip of car 1, when this slip detects, even regular door control signal is in door and opens state and also make it invalid, thereby stop door to open command signal b, make door close command signal c and effectively export, like this, when magnet stopper 6 hinders car 1 for some reason and is sliding, car door and take advantage of a Men Buhui to open then.Therefore, the passenger in the car 1 is prevented trouble before it happens with the Peril Incident that the passenger is held under the arm in door for the treatment of of taking advantage of the field.

Embodiment 2

Fig. 4 is the simulated diagram of the microcomputer executive control program of second embodiment of the invention.In the figure, but but 31～33 with Fig. 2 identical, be in the DZ open contact 40 of door open region connection when outer according to the output of door open region detector 14, when car 1, the series loop that SD circuit-closing contact two contacts of connecting when detecting the slip of car 1 when detecting as the VTO circuit-closing contact 41 that surpasses 2m/min and connect when above and SD coil 33 with car speed d constitute is for being connected in parallel, and this loop that is connected in parallel can substitute connections with the VTO circuit-closing contact 30 of Fig. 2.

In Fig. 4, omitted the 34～DO coil 39 that makes contact of the NCT among Fig. 2 again.

In embodiment 2, microcomputer detects the contactless coil demagnetization of braking contactor B from the on-state of contactless switch contact 9b, and connect BB open contact 31, but but, the output according to door open region detector 14 then connects DZ open contact 40 when car 1 is in outside the door open region when detecting.

In case above-mentioned state continuance T is more than second, then SD circuit-closing contact 42 is connected in the slip of 33 detections of SD coil and output car 1.

In case SD coil 33 detects and SD made contact 42 connect, if then car speed d is when about 2m/min is above, microcomputer connection VTO circuit-closing contact 41 continues the detected state of SD coil 33.Promptly continue the slip of car is detected.

Yet microcomputer is during detecting slip, and is identical with the foregoing description 1, stops door to open command signal and out gate closes command signal.

As mentioned above, in embodiment 2, but the stop of door in the open region moved and can not carried out flase drop as slip and go out.And, but car be parked in the door open region when outer (car speed d is Om/min) also can close to instruct and further increase safety because of stoping door drive the instruction out gate.

Embodiment 3

In the foregoing description 1 and 2, though detect car speed with car speed detector 14, the rotative speed detector of also available not shown electrical motor replaces.

Again, in the foregoing description 1 and 2, though in microcomputer, used the switch on delay timer, but in car speed detector 14, low frequency filter is set, when its output is detected by microcomputer,, then can more accurately detect the slip of car 1 if VTO circuit-

closing contact

30 and 41 is connected.

In addition, the foregoing description 1-3 though be that wirerope formula elevator is set forth, equally also is applicable to the hydraulic type elevator.In the hydraulic type elevator, cooresponding with the magnet stopper of wirerope formula elevator is the switching of valve, in case failsafe valve can not full cut-off, then car whereabouts.Certainly, it also is useful as the countermeasure of failsafe valve.

Claims

1, be that a plurality of floors are stopped in the elevator of service, a kind of elevator control device is characterized in that, it has:

Detect the car speed detection device of car speed;

Detect to the car halt instruction detection device of the halt instruction of the electrical motor that drives car;

Detect the car slip detection device that car slides when above-mentioned car speed surpassed specified speed when above-mentioned halt instruction detected;

Above-mentioned car slides, and out gate closes the door switching command device of instruction when detecting.

2, elevator control device according to claim 1 is characterized in that, above-mentioned car slip detection device, but when outside the door open region, detecting the halt instruction of giving above-mentioned electrical motor, detect car and slide by above-mentioned car halt instruction detection device.