CN2151964Y

CN2151964Y - Life saving device for lift when power cut-off

Info

Publication number: CN2151964Y
Application number: CN 92241199
Authority: CN
Inventors: 张广兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-14
Filing date: 1992-11-14
Publication date: 1994-01-05
Anticipated expiration: 2002-11-14

Abstract

The utility model relates to a life saving device for an ac and dc elevator lift when power cut-off caused by a fault or a power supply. The utility model is characterized in that a circuit is additionally provided with a signal detection circuit which is a detection circuit for judging a fault or a power cut or the phase lack for a power supply. The utility model respectively adopts a self aid with a local or a self aid with a self line motor which drives a traction machine. The signal detection circuit is composed of three gating circuits and two triggers. The utility model has the advantages of simple structure, long service life, small occupation area, complete functions, low cost, convenient installation, etc.

Description

Life saving device for lift when power cut-off

The utility model relates to the deliverance apparatus that the alternating current-direct current elevator hinders outage or power supply outage for some reason.

Elevator outage deliverance apparatus or emergency flat layer Design of device focus in the power supply power failure at present, by backup power to elevator rescue, and " being stranded ladder " major part takes place in actual the use is that the fault of elevator own causes, said apparatus can not solve the problem that elevator " is stranded ladder " fully.Drag in now the rescue driving style that adopts divides and drag two kinds outward, in drag three-phase inversion technology or the three T network technologies of adopting more, but can only be confined to alternating-current electrical lift, can not be used for still a large amount of now DC elevator of using, and technical sophistication, cost height, maintenance difficult, dragging some outward is to adopt DC motor rubber friction wheel form, though the method is simple, and poor reliability, friction wheel easy to wear is in case promptly cause elevator out of control, dangerous after the wearing and tearing; Some is to adopt DC motor drop-gear box--the transmission of power-transfer clutch, though more reliable, keep concentricity when requiring transmission device and main motor shaft to connect, mechanical setting accuracy is required height, floor area is big, the cost height.

No matter being handy signal deteching circuit and linear motor, the purpose of this utility model provides a kind of alternating-current electrical lift or DC elevator, the deliverance apparatus that can when fault is cut off the power supply, can when power supply outage or phase shortage, use again.

Task of the present utility model is finished like this: a kind of by function control circuit, backup power, inverter, the elevator rescue device that weight difference judging circuit and positive and negative switch are formed, in function control circuit, be equipped with by three gate circuits and two signal deteching circuits that binary pair is formed, it is power cut signal or default phase signal that first gate circuit is used for distinguishing, second gate circuit receives this signal and is connected to gate signal peace layer signal, the 3rd gate circuit receives breakdown signal and is connected to gate signal peace layer signal, second gate circuit may be sent out an outer control signal that drags of binary pair output of connecting gate signal, the 3rd gate circuit can trigger another binary pair output slow train control signal of connecting gate signal, when elevator is alternating-current electrical lift, signal deteching circuit is if detect breakdown signal, then slow train control circuit work, open drg, start main motor slow train operation, flat bed opens the door nearby; If detect when being power failure or power phase failure signal, then filling the power supply commutation circuit is single phase alternating current with the standby battery dc inverter, connect emergency lighting, control circuit is opened drg, the weight difference judging circuit is controlled positive and negative switch, make linear motor drag elevator to the operation of underloading direction, flat bed opens the door nearby.

When elevator is DC elevator, no slow train control circuit, signal deteching circuit direct control charging power supply commutation circuit, the standby battery dc inverter is become single phase alternating current, be sent to control circuit, open drg, the weight difference judging circuit is controlled positive and negative switch makes linear motor drag elevator to the operation of underloading direction, and flat bed opens the door nearby.

The utility model is simple in structure, and is applied widely, and long service life is taken up an area of for a short time, multiple functional, and cost is low, and is easy for installation.

Fig. 1 is the deliverance apparatus functional block diagram;

Fig. 2 is a linear motor actuator scheme drawing;

Fig. 3 is the signal detection functional block diagram.

With reference to Fig. 1, when elevator was alternating-current electrical lift, signal deteching circuit was if detect breakdown signal, and drg is opened in then slow train control circuit work, starts main motor slow train operation, and flat bed opens the door nearby; If detect when being power failure or power phase failure signal, then filling the power supply commutation circuit is single phase alternating current with the standby battery dc inverter, connect emergency lighting, control circuit is opened drg, the weight difference judging circuit is controlled positive and negative switch, make linear motor drag elevator to the operation of underloading direction, flat bed opens the door nearby.

With reference to Fig. 2 linear motor actuator, this linear motor is the collar plate shape linear motor, inertia wheel 4(can be the purpose made disk) as the inferior utmost point (being rotor) of linear motor, the stator 5 of electrical motor radially the side that is contained in inertia wheel 4 and be fixed on the support 6, keep uniform air gap between inertia wheel 4 and the stator 5, under the effect of stator 5 magnetic fields, inertia wheel 4 drives towing machine 1 rotation, and layer flat bed opens the door nearby to make cab.When elevator was fault, the slow train control circuit was opened drg 2, the operation of main motor 3 slow trains, drag towing machine 1 to the underloading direction nearby flat bed open the door.

This linear motor also can be plate or cast, and just time utmost point adopts flat board or pipe.

With reference to Fig. 3,7,9,10 is gate circuit, and 8,11 is binary pair, during fault, gate circuit 7 makes binary pair 8 output slow train signals finish rescue until flat bed and Men Kaihou, have a power failure or during phase shortage gate circuit 9 can make the gate circuit 10 of control binary pair 11 drag outside flat bed open the door after disappearance of signal again.

Claims

1, a kind of elevator outage deliverance apparatus, comprise function control circuit, backup power, inverter, weight difference judging circuit and positive and negative switch, it is characterized in that on deliverance apparatus, being equipped with by three gate circuits 7,9,10 and two binary pairs 8,11 signal deteching circuits of forming, the input end 12 of gate circuit 7,13,14 meet gate signal A respectively, breakdown signal B, flat bed signal C, the input end 19 of gate circuit 9,20 meet power cut signal D and default phase signal E respectively, the input end 22 of gate circuit 10,23 meet gate signal A peace layer signal C respectively, the mouth 21 of gate circuit 9 connects the input end 24 of gate circuit 10, gate circuit 7,10 mouth 15,25 connect binary pair 8 respectively, 11 trigger end 16,27, binary pair 8,11 trigger end 17,26 all connect with gate signal A, binary pair 8,11 mouth 18,28 export slow train control signal F respectively and drag control signal G outward, when elevator is alternating-current electrical lift, then adopting main motor 3 to drive towing machine 1 slow train to fault saves oneself, to have a power failure or power phase failure signal then to fill the power supply commutation circuit be single phase alternating current with the accumulator DC inversion, control circuit is opened drg 2, control positive and negative switch according to weight difference, making linear motor time polar circle dish 4 drag towing machine 1 under the stator 5 that is contained in its next door drives moves cab to the underloading direction, flat bed opens the door nearby, when elevator is DC elevator, then having a power failure or control process during the power supply phase shortage with alternating-current electrical lift.

2, elevator outage deliverance apparatus according to claim 1, it is characterized in that linear motor can be the collar plate shape linear motor, inferior very disk 4, it also can be plate linear motor, inferior very dull and stereotyped, can also be tube-type linear motor, inferior very pipe, stator keeps certain air gap to get final product with time utmost point.