CN2210172Y

CN2210172Y - Safety monitoring and controlling device for construction lifting machine

Info

Publication number: CN2210172Y
Application number: CN 94220151
Authority: CN
Inventors: 黄文辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-27
Filing date: 1994-08-27
Publication date: 1995-10-18
Anticipated expiration: 2004-08-27

Abstract

The utility model relates to a safety monitor for construction elevators, which is composed of a motor control circuit, a main control circuit, a floor control circuit and a floor indicating circuit. The utility model achieves the purposes of controlling the rotation and stop of a motor by the actions of self locking and contracting brake which are achieved by main components such as a relay, a contactor, etc. The utility model has the functions of floor display, automatic floor alignment, accurate travel range, misoperation resistance, pointing control, top impulsion resistance and bottom resistance and the utility model has the advantages of simple structure, high safety, convenient operation and low cost.

Description

Safety monitoring and controlling device for construction lifting machine

The utility model is a kind of building hoist security monitor.

At present, the automatic floor approaching mechanism of building hoist can be divided into digital control type automatic floor approaching mechanism and electric-controlled type automatic floor approaching mechanism.The circuit part of digital control type automatic floor approaching mechanism is to adopt integrated circuit and form, and its shortcoming is: because the camp site environment is abominable, therefore, integrated circuit fault rate height; Complex structure, maintenance trouble costs an arm and a leg, and inconvenience is applied etc.The shortcoming of electric-controlled type automatic floor approaching mechanism is: control line of each layer needs and concentration line are controlled, the number of plies is many more, control line is just many more, therefore in skyscraper, often, complex circuit maintains difficulty owing to causing, in addition owing to there is not a floor Presentation Function, can only be by the position of range estimation elevator, therefore dangerous in use, unreliable and inconvenient, and influenced the efficient of working.

The purpose of this utility model be exactly provide in order to overcome above-mentioned weak point a kind of simple in structure, safe and reliable, use building hoist security monitor easy to maintenance.

The utility model is made up of circuit for controlling motor, main control circuit, floor control circuit and floor indicating circuit.

Below in conjunction with accompanying drawing the utility model is explained in detail:

Fig. 1 is a profile front schematic view of the present utility model.

Fig. 2 is a circuit for controlling motor schematic diagram of the present utility model.

Fig. 3 is a main control circuit schematic diagram of the present utility model.

Fig. 4 is a floor control circuit schematic diagram of the present utility model.

Fig. 5 is a floor indicating circuit schematic diagram of the present utility model.

Referring to Fig. 2, circuit for controlling motor of the present utility model is made up of open contact (SC1-SC3, XC1-XC3, ZC1-ZC2) and the band-type brake device J of Three-phase knife switch DK, wire fuse RD, contactless switch SC, XC, ZC.The open contact of contactless switch SC and XC (SC1-SC3, XC1-XC3) becomes positive opposition method with three phase electric machine with three phase mains, the open contact of band-type brake device J and contactless switch ZC (ZC1, ZC2) is connected in series on two phase lines of three phase mains.

Referring to Fig. 3, main control circuit of the present utility model is that open contact 1ZJ1, the 12ZJ1 of contactless switch SC, XC, ZC and normally closed open contact (SC4, SC5, SC6, XC4, XC5, XC6) relay 1ZJ, 12ZJ, 13ZJ, 13ZJ1 form by the interlock button XA that descends, rise interlock button SA, the button TA that stops to link.Main control circuit is the ac power supply by 220 volts, descend interlock button XA with after the open contact XC5 of contactless switch KC is in parallel, one end is connected with phase line of power L, the normally closed contact SC4 of the other end and contactless switch SC, the be connected in series other end of open contact 1ZJ1 of the open contact 1ZJ1 of contactless switch XC and relay 1ZJ is connected the interlock button SA and after contactless switch SC5 is in parallel of rising with the normally closed button of the button TA that stops to link, one end is connected with phase line of power L, the normally closed contact XC4 of the other end and contactless switch XC, the open contact 12ZJ1 of contactless switch SC and relay 12ZJ is connected in series, the other end of open contact 12ZJ1 interconnects with normally closed button and the open contact 1ZJ1 of the button TA that stops to link, and the other end of the normally closed button of the button TA that stops to link is connected with the zero line N of power supply with the open contact 13ZJ1 series connection back of relay 13ZJ, what stop to link knob TA often opens button and contactless switch XC, the open contact XC6 of SC, after SC6 is connected in parallel, one end is connected with phase line of power L, and the other end is connected with contactless switch ZC afterwards and the end of the open contact 13XJ1 of the zero line N of power supply and relay 13ZJ interconnects.

Referring to Fig. 4, floor control circuit of the present utility model by 13 relays (1ZJ-13ZJ), 10 turn round sub-gang switch (K2-K11), 10 buttons (2LA-11LA), 10 indicator lamps (L2-L11), 12 travel switches (1XK-12XK), reset button QA, the interlock button XA that descends, rise interlock button SA and electric bell DL form.The floor control circuit is the DC power supply by 24 volts, the open contact 2ZL1 of travel switch 2XK and relay 2ZJ is connected in parallel, one end is connected with the anodal E1 of power supply, and the other end is connected with the negative pole of power supply after being connected in series with relay 2ZJ, reset button QA, the interlock button SA that rises, the interlock button XA that descends again.The end of the normally closed contact 2ZJ2 of relay 2ZJ is connected with the anodal E1 of power supply, and the other end and button gang switch K2 be connected with the negative pole of power supply again after relay 13ZJ is connected in series.The end of button 2LA is connected with the anodal E1 of power supply, and the other end and button gang switch K2 and indicator lamp L2 interconnect, and interconnects with an end of indicator lamp and the negative pole of power supply after turning round sub-gang switch K2 and electric bell DL and being connected in series again.The method of attachment of the second layer to the eleventh floor is identical, the end and the reset button QA that are the relay (2ZJ-11ZJ) of each layer interconnect, and the two ends of turning round sub-gang switch (K2-L11) of each layer interconnect with relay 13ZJ and electric bell DJ respectively.Normally closed travel switch 1XK is with after relay 1ZJ connects, and two ends are connected with negative pole with the anodal E1 of power supply respectively.Normally closed travel switch 12XK is connected with negative pole with the anodal E1 of power supply respectively with two ends, relay 12ZJ series connection back.

Referring to Fig. 5, floor indicating circuit of the present utility model is made up of normally closed interlock (1ZJ2,12ZJ2), open contact (2ZJ3-11ZLJ3) and 12 indicator lamps (1L-12L) of 12 relays.The floor indicating circuit is the ac power supply by 6 volts, the connection of each layer is all identical, be that normally closed, the open contact (1ZJ2,12ZJ2,2ZJ3-11ZJ3) of the relay back of connecting with indicator lamp (1L-12L) is in parallel with each layer, two ends are connected with negative pole with the anodal E2 of power supply again.

Principle of work of the present utility model is: referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, under normal circumstances, because the effect of normally closed travel switch 1XK and 12XK makes relay 1ZJ and 12ZJ conducting, thereby makes open contact 1ZJ1,12ZJ1 closure.When dial certain floor down turn round sub-gang switch (as the sub-gang switch K2 of turning round of second floor) time, relay 13ZJ conducting, make open contact 13ZJ1 closure, at this moment press rising (or decline) interlock button SA(or XA) time, contactless switch SC(or XC) conducting, make open contact SC5(or XC5) closed and form self-locking state, guarantee contactless switch SC(or XC) the maintenance conducting state, meanwhile and make open contact SC1, SC2, SC3, SC6(or XC1, XC2, XC3, XC6) closure, and cause contactless switch ZC conducting, make open contact ZC1 and ZC2 closure, at this moment, the J conducting of band-type brake device also is in " declutching " state, (or counter-rotating) just changeed in three phase electric machine M conducting simultaneously immediately, make elevator rising (or decline), when elevator rises (or decline) during to the floor be scheduled to (as the second layer), touched travel switch 2XK, make relay 2ZJ conducting, and cause open contact 2ZJ1, closed and the normally closed contact 2ZJ2 disconnection of 2ZJ3, and formation self-locking state, at this moment relay 13ZJ opens circuit, cause making contactless switch SC(or XC because of open contact 13ZJ1 disconnects) and ZC open circuit, and make three phase electric machine M open circuit and band-type brake device J be in " braking " state, like this, elevator is just out of service and stop at (being the second layer) on the predetermined floor, the indicator lamp 2L of this floor this moment (second layer) luminous indication simultaneously.In the process of elevator rising (or decline), owing to touched travel switch (2XK-11XK), make relay (2ZJ-11ZJ) conducting and self-locking, make open contact (2ZJ3-11ZJ3) closure, thereby elevator is when each floor, the indicator lamp of this floor (2L-11L) will keep luminous indication and successively show the situation of the residing floor of elevator and rising or decline, stops to operate to up to elevator and ends.As long as press reset button QA, rising (or decline) interlock button SA(or XA), the floor indicator lamp just can extinguish, and successively shows the residing position of elevator by the situation of elevator rising (or decline) again.

Form the anti-protective circuit of rushing to summit by normally closed travel switch 12XK and relay 12ZJ; form protective circuit at the bottom of the erosion control by normally closed travel switch 1XK and relay 1ZJ; rise to uppermost storey and et out of order when the machine of liter and continue to rise to the top; owing to touched normally closed travel switch 12XK; electrical equipment 12ZJ is opened circuit; thereby open contact 12ZJ1 is disconnected; contactless switch SC and ZC open circuit in succession like this; make three phase electric machine M stop operating and band-type brake device J be in " braking " state; make elevator stop to rise; and play anti-effect of rushing to summit, prevent rushing to summit the luminous demonstration of indicator lamp 12L this moment.In like manner, when elevator drops to the bottom, owing to touch normally closed switch 1XK, thereby contactless switch XC and ZC are opened circuit in succession, make elevator stop to descend, and play effect at the bottom of the erosion control, the luminous demonstration of indicator lamp 1L at the bottom of this moment erosion control, avoided simultaneously since the pine of steel rope disorderly and arrange the possibility that the whole damage of steel cable that causes very causes fracture.When elevator needs a spot of during to bottom offset, can press and stop to link button TA, at this moment contactless switch ZC conducting, when making band-type brake device J be in " declutching " state, this moment, three phase electric machine M did not have conducting, and glided by deadweight own, when relieving stops to link button TA, elevator just stops immediately, thereby realizes crawl control.

When using the utility model, as long as need elevator to press the button (2LA-11LA) as certain layer, indicator lamp (L2-L11) will luminously be indicated, operating personal will know that one deck needs elevator, and dial this layer down turn round sub-gang switch (K2-K11), when pressing rising (or decline) interlock button SA(or XA) time, elevator will rise (or decline) to this floor, and stops at this floor.At this moment, when if this floor is pressed knob LA again, luminous and sounding type (at this moment simultaneously, when only pressing the knob LA of this layer, the acoustic luminous indication simultaneously of electric bell DL and indicator lamp, and other floor just can not sounding when pressing the button LA, can only be luminous, so just can avoid operating personal to listen electric bell sound faulty operation the possibility of safety misadventure takes place because of mistake, thereby guarantee safety in production), the operation that the indication operating personal rises or descends, simultaneously, the utility model monitors the situation of the residing position of elevator and rising or decline by indicator lamp (2L-11L).

When being used in skyscraper (12 layers-30 multilayers), do not need to increase the control line of elevator, just can use as long as cooresponding floor control line is connected in parallel.For example that the control line of second, 12, two Floor 12s is continuously in parallel, so analogize.When elevator will rise to the 15 layer, just dial down the sub-gang switch K5 of turning round of layer 5 and press the interlock knob SA that rises, elevator just begins to rise, when rising to layer 5, need only press zero clearing knob QA, elevator just can continue to rise, indicator lamp this moment (2L-11L) extinguishes, and show again and the position at elevator place directly cause when being raised to the 15 layer that elevator just can be out of service.In like manner, in the time of need rising to Floor 12, just stir the sub-gang switch K2 of turning round of the second layer, elevator just can be parked in Floor 12.Therefore, when skyscraper used, the bonded assembly control line was simple, was convenient to maintenance.

The utility model has the advantages that: 1, have floor and show, automatic leveling, stroke accurately, anti-misoperation, crawl control, prevent the function of rushing to summit and rushing the end; 2, simple in structure, safe and reliable, convenient maintenance; 3, cost low, be convenient to promote etc.

Claims

A kind of building hoist security monitor is characterized in that being made up of circuit for controlling motor, main control circuit, floor control circuit and floor indicating circuit; Circuit for controlling motor is made up of open contact (SC1-SC3, XC1-XC3, ZC1-ZC2) and the band-type brake device J of contactless switch SC, XC, ZC, the open contact of contactless switch SC and XC (SC1-SC3, XC1-XC3) becomes positive and negative with three phase electric machine M with three phase mains and is connected, and the open contact of band-type brake device J and contactless switch ZC (ZC1, ZC2) is connected in series on two phase lines of three phase mains; Governor circuit is by the interlock button XA that descends, interlock button SA rises, button TA stops to link, contactless switch SC, XC, ZC and normally closed, open contact (SC4, SC5, SC6, XC4, XC5, XC6), relay 1ZJ, 12ZJ, the open contact 1ZJ1 of 13ZJ, 12ZJ1,13ZJ1 forms, descend interlock button XA with after the open contact XC5 of contactless switch XC is in parallel, one end is connected with phase line of power L, the normally closed contact SC4 contactless switch XC of the other end and contactless switch SC and the open contact 1ZJ1 of relay 1ZJ are connected in series, the other end of open contact 1ZJ1 is connected with the normally closed button of the button TA that stops to link, rise interlock button SA with after the open contact SC5 of contactless switch SC is in parallel, one end is connected with phase line of power L, the normally closed contact XC4 contactless switch SC of the other end and contactless switch XC and the open contact 12ZJ1 of relay 12ZJ are connected in series, the other end of open contact 12ZJ1 interconnects with normally closed button and the open contact 1ZJ1 of the button TA that stops to link, and the other end of the normally closed button of the button TA that stops to link is connected with the zero line N of power supply with the open contact 13ZJ1 series connection back of relay 13ZJ, what stop to link button TA often opens button and contactless switch XC, the open contact XC6 of XC, after SC6 is connected in parallel, one end is connected with phase line of power L, and the other end is connected with contactless switch ZC afterwards and the end of the open contact 13ZJ1 of the zero line N of power supply and relay 13ZJ interconnects; The floor control circuit is by 13 relays (1ZJ-13ZJ), turn round sub-gang switch (K2-K11) for 10,10 buttons (2LA-11LA), 10 indicator lamps (L2-L11), 12 travel switches (1XK-12XK), reset button QA, interlock button XA descends, interlock button SA and electric bell DL composition rises, the open contact 2ZJ1 of travel switch 2XK and relay 2ZJ is connected in parallel, one end is connected with the anodal E1 of power supply, and the other end and relay 2ZJ, reset button QA, interlock button SA rises, descend and be connected with the negative pole of power supply again after interlock button XA is connected in series, the end of the normally closed contact 2ZJ2 of relay 2ZJ is connected with the anodal E1 of power supply, and the other end with turn round sub-gang switch K2 and relay 13ZJ be connected in series after be connected with power cathode again, the end of button 2LA is connected with the anodal E1 of power supply, the other end with turn round sub-gang switch K2 and indicator lamp L2 interconnects, interconnect with the end of indicator lamp L2 and the negative pole of power supply again after turning round sub-gang switch K2 and electric bell DL and being connected in series, the method of attachment of the second layer to the eleventh floor is identical, the end and the reset button QA that are the relay (2ZJ-11ZJ) of each layer interconnect, the two ends of turning round sub-gang switch (K2-K11) of each layer interconnect with relay 13ZJ and electric bell DL respectively, normally closed travel switch 1XK is connected with negative pole with the anodal E1 of power supply respectively with two ends, relay 1ZJ series connection back, and normally closed travel switch 12XK is connected with negative pole with the anodal E1 of power supply respectively with two ends, relay 12ZJ series connection back; The floor indicating circuit is made up of normally closed contact (1ZJ2-12ZJ2), open contact (2ZJ3-11ZJ3) and 12 indicator lamps (1L-12L) of 12 relays, the connection of each layer is all identical, be that normally closed, the open contact (1ZJ2,12ZJ2,2ZJ3-11ZJ3) of the relay back of connecting with indicator lamp (1L-12L) is in parallel with each layer, two ends are connected with negative pole with the anodal E2 of power supply again.