CN101214897A - Elevator safety system - Google Patents
Elevator safety system Download PDFInfo
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- CN101214897A CN101214897A CNA2008100192966A CN200810019296A CN101214897A CN 101214897 A CN101214897 A CN 101214897A CN A2008100192966 A CNA2008100192966 A CN A2008100192966A CN 200810019296 A CN200810019296 A CN 200810019296A CN 101214897 A CN101214897 A CN 101214897A
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- reed tube
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 238000001514 detection method Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 17
- 230000003534 oscillatory effect Effects 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 claims description 10
- 238000003475 lamination Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 235000014676 Phragmites communis Nutrition 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Door Apparatuses (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The present invention discloses an elevator safety system which can detect and warn when an elevator floor door is opened abnormally, and the two ends of an auxiliary door lock switch at an elevator driven floor door and a dry reed pipe which is installed at the sill of the floor door at the floor are in parallel connection and then are in concatenation with detecting devices which are installed by the same manner at other floors to form a passageway; a pair of permanent magnetic steels are installed at the sill of a cabin corresponding to the position for installing the dry reed pipe to form a detecting chain circuit for detecting whether the elevator floor door and the cabin position are under the normal and safe state. When detecting, door lock switches at the driving doors of each elevator floor door are in concatenation, and the elevator floor door system state is monitored by two safe chain circuits. The present invention simplifies the former elevator driven door lock detecting establishment greatly, reduces the elevator manufacturing cost and has the alarming function which can prevent from falling into an elevator lift channel, which is fit for the requirements of the elevator safety warning in different occasions, reduces the cost of preventing from falling into the elevator lift channel greatly and improves the self reliability.
Description
Technical field
The present invention relates to a kind of elevator safety system, elevator new type of safe method of inspection and device have been given, be that a kind of circuit structure is simple, control is used for the method and the device of reporting to the police under the improper open mode of layer door, specifically a kind of new elevator safety system easily.
Background technology
When lift car leaves the district and floor door quilt artificially internally or during external opening, the party concerned might be strayed into the hoistway that falls, this moment, elevator device should send news sound near this floor, turn on the hoistway lamp simultaneously, be used to point out party concerned's present located precarious position, prevent the generation of safety misadventure, this design concept is being permitted just to have obtained many years ago practical application in elevator device, yet owing to increase the cost that these safety facilities can increase manufacturing enterprise, add existing national elevator safety standard and imperfection, do not relate to the carelessness because of self to the party concerned, general idea, the caused hoistway accident of falling of slipping up is taken precautions against requirement, nearly all elevator manufacturing enterprise and unwilling acceptance.
As elevator, its layer door driven down by gate and opens under the normal circumstances, for operator's turnover, and work as Lift out of order, car might be parked between two an animal-drawn seed plough layers, the passenger will go to open voluntarily the escape of layer door under a lot of situations, because elevator does not possess the caution facility that is used to point out party concerned's safety usually, cause some hoistway incidents of falling, the area, Hong Kong that comprises China abroad generally adopts the facility of a kind of being referred to as " gate safety lock " to take precautions against this class accident, promptly, car opens the door after the zone when leaving floor, the function that car door just can not be opened by the passenger of the inside, since do not open gate, the passenger of the inside also just can not open the layer door of outside, just this accident that is strayed into the hoistway that falls can not take place also, yet because the gate safety lock can increase the probability that elevator breaks down in practice, run into the car fault of layer door of not opening behind the flat bed of arriving at a station, cause oppressive incident, add in the middle of the enforceable elevator safety standard of China not have such functional requirement, therefore domesticly also mostly do not adopting this facility to come the generation of pre-fall arrest hoistway accident with elevator.
Moreover, elevator reparing and operating personal are opened layer behind the door with specialist tools, because mankind itself's physilogical characteristics, can not avoid fully neglecting, the appearance of situation such as general idea, add without any the facility of light, sound safety instruction and so on, cause being strayed into the hoistway incident of falling, cause serious personal safety accident, and this point is the insurmountable problem of gate safety lock.
Above-mentioned two kinds of phenomenons are topmost problem in the various accidents of elevator for many years always, still constantly take place so far.
Publication number is that CN 1401555A " dropping-and shearing-preventing elevator safety door lock controlling system " and Granted publication number have all provided how to take precautions against the concrete technical scheme that is strayed into the hoistway accident of falling for CN 2533110Y " a kind of elevator door safety alarm device " patent application document, all related to adopt and turned on the hoistway lamp, send the method for alarm sound, each layer by layer the door news that all increase corresponding language alarm circuit or other active buzzer phones and so on ring device, undoubtedly be to have increased the safety rate that elevator device essence accident prevention takes place, but thinking also needs to improve, active after all news are rung device than high many of passive news Chinese percussion instrument material price, also exist problems such as self reliability simultaneously.
In fact also to solve different elevator use occasions, its sound size problem that adapts with it, for example the annunciator sound of quiet occasion elevator such as hotel, office building just can not be equal to mutually with factory, the public arena annunciator sound intensity under being used in noisy environment, certainly will increase more costs again if realize sound intensity adjustable size.
No matter be top mentioned to two patent application documents or publication number be CN 1265371A technical schemes such as " non-lift car place is the door detecting devices that is opened and is layer by layer ", detecting device in the time of all need outside not changing original elevator device, increasing the party concerned once again and open elevator door, this certainly will increase the generation likelihood of failure again, and this point elevator design person also be the thing of being unwilling to see.
With regard to elevator device itself, when all when initiatively door and passive door are closed owing to need detect, whether be closed to the position with affirmation to the position at this two fans door place, promptly carry out with usually said door lock and secondary door lock assembly.The method that detects is exactly by on detecting, the method whether door lock of following all floors and the contact of secondary door lock assembly all are switched on realizes, formed is the door lock safety chain of a closure, quantity with regard to its contact is the twice of elevator floor quantity, because this number of switches is many, door lock and this structure of secondary door lock assembly contact exist the bigger problem of probability failure, in case occur, check that fault also comparatively bothers, carry out and adopt the short lock loop method of sealing up a door to make it lose effect invariably exceptionally when checking, owing to reasons such as forgeing of maintainer, cause the terraced incident of opening the door away easily, causing the person is outwardness by operation car shearing accident, also happen occasionally, reduce door lock quantity so, reducing the issuable fault of door lock assembly also is to have important safe meaning, thinks that therefore the form of door lock safety return circuit of present widespread use has further improved meaning.
Summary of the invention
The objective of the invention is detection alarm method and device thereof when the weak point invention of the passive door position probing that exists at existing elevator device and pre-fall arrest hoistway warning is a kind of to be realized that elevator door is improper and open, try hard to reach the original door system detecting device of minimizing elevator fault rate, simplify fall arrest hoistway facility complexity, strengthen its adaptive purpose.
One of technical scheme of the present invention is:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, two dry-reed tube GB, GC that are close together are installed, adjust its position, make that the magnet steel of being installed on the passive door can make dry-reed tube GB, GC closure, conducting when layer door closed contact; 2), a pair of magnet steel is installed, a cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjusts its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed in car sill one side; 3), will go up the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, GB with each layer and after connecting contacts mutually and inserts between detection relay J 1 and the Power Ground end in the alarm control unit again, is connected with alarm sound producer XF by the contact J1-2 in the detection relay J 1; 4) described alarm sound producer XF is made up of low-frequency oscillatory network, repeating resistance and high-frequency oscillating circuits, low-frequency oscillatory network is made up of NAND gate 1,2, it links to each other with the high frequency generator circuit of being made up of NAND gate 3,4 by resistance R 3, be connected to the regulator potentiometer W of the oscillation frequency of scalable HFS between power positive end V+ and NAND gate 3 mouths, the positive voltage of alarm sound producer XF is obtained by the normally closed contact J1-2 access that detects relay J 1; 5), be installed on door pocket or the door head dry-reed tube GC and the piezoelectric buzzer FM that is installed in same position mutually and connect, after then the C of the alarm sound producer XF in the Access Control loop of being made up of dry-reed tube GC and piezoelectric buzzer FM after also connection circuit is connected in series of all each layers being held.
Two of technical scheme of the present invention is:
A kind of elevator safety system, improve elevator essential safety performance by the following method:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, dry-reed tube GB is installed, adjust its position, make that the magnet steel of being installed on the passive door can make dry-reed tube GB closure, conducting when layer door closed contact; 2), a pair of magnet steel is installed, a cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjusts its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed in car sill one side; 3), will upward the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, the GB with each layer and after connecting contacts between the detection relay J 1 and Power Ground end in the access alarm control unit mutually again; 4), the contact JI-2 that detects in the relay J 1 meets R1 and C1, R1 other end power connection anode V+, C1 other end ground terminal GND, detect " 1 " end of the normally closed termination control relay of the contact JI-2 J2 of relay J 1, " 2 " end of control relay J2 joins " 3 " termination ground terminal GND by rest button AN and the contact JI-2 Chang Kaiduan that detects relay J 1; 5), an end of hoistway lamp relay J 3 is linked to each other with Power Ground end GND, the other end links to each other with normally closed contact J1-2 that detects relay J 1 or the contact J2-1 of control relay J2 by inspection switch K; 6), make that original safety return circuit is in series in contact J2-2 among the control relay J2 and the elevator device, finish when car to be left district's deck door be detection when opening by the people, making whether normal relation between elevator passive door position and the car relative position is reflects in the safety return circuit of elevator device, the door lock contact switch of active door one side all is chained together in all layers door, the door lock that inserts in original elevator device detects the loop, in original elevator device in all layers door the secondary door lock of passive door one side contact switch device controlled, comprising that affiliated facility all saves need not.
Three of technical scheme of the present invention is:
A kind of elevator safety system, improve elevator essential safety performance by the following method:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, two dry-reed tube GB, GC that are close together are installed, adjust its position, make that the magnet steel of being installed on the passive door can make dry-reed tube GB, GC closure, conducting when layer door closed contact; 2), a pair of magnet steel is installed, a cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjusts its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed in car sill one side; 3), will go up the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, GB with each layer and after connecting contacts mutually and inserts between detection relay J 1 and the Power Ground end in the alarm control unit again, is connected with alarm sound producer XF by the contact J1-2 in the detection relay J 1; 4), alarm sound producer XF is made up of low-frequency oscillatory network, repeating resistance and high-frequency oscillating circuits, low-frequency oscillatory network is made up of NAND gate 1,2, it links to each other with the high frequency generator circuit of being made up of NAND gate 3,4 by resistance R 3, be connected to the regulator potentiometer W of the oscillation frequency of scalable HFS between power positive end V+ and NAND gate 3 mouths, the power end of alarm sound producer XF links to each other with the normally closed contact J1-2 that detects relay J 1; 5), on door pocket or door head, install dry-reed tube GC and with the piezoelectric buzzer FM that is installed in same position mutually and connect, after then the C of the alarm sound producer XF in the Access Control loop of being made up of dry-reed tube GC and piezoelectric buzzer FM after also connection circuit is connected in series of all each layers being held; 6), after lift car leaves a district, the layer door that is opened gone up appended magnet steel quilt along with together removing, therefore this lamination electroceramics buz FM dry-reed tube in parallel with it opens a way, the tonepulse voltage that alarm sound producer XF sends can be loaded into this lamination electroceramics buz FM two ends, makes the piezoelectric buzzer of place floor and the piezoelectric buzzer FM that is positioned at elevator(lift) machine room send alarm sound simultaneously.
Four of technical scheme of the present invention is:
A kind of elevator, improve elevator essential safety performance by the following method:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, two dry-reed tube GB, GC that are close together are installed, adjust its position, make that the magnet steel of being installed on the passive door can make dry-reed tube GB, GC closure, conducting when layer door closed contact; 2), a pair of magnet steel is installed, a cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjusts its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed in car sill one side; 3), will go up the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, GB with each layer and after connecting contacts mutually and inserts between detection relay J 1 and the Power Ground end in the alarm control unit again, is connected with alarm sound producer XF by the contact J1-2 in the detection relay J 1; 4), alarm sound producer XF is made up of low-frequency oscillatory network, repeating resistance and high-frequency oscillating circuits, low-frequency oscillatory network is made up of NAND gate 1,2, it links to each other with the high frequency generator circuit of being made up of NAND gate 3,4 by resistance R 3, be connected to the regulator potentiometer W of the oscillation frequency of scalable HFS between power positive end V+ and NAND gate 3 mouths, the power end of alarm sound producer XF links to each other with the normally closed contact J1-2 that detects relay J 1; 5), make dry-reed tube GC that is installed on door pocket or the door head and the piezoelectric buzzer FM that is installed in same position mutually and connect, after then the C of the alarm sound producer XF in the Access Control loop of being made up of dry-reed tube GC and piezoelectric buzzer FM after also connection circuit is connected in series of all each layers being held; 6) after, lift car leaves a district, the layer door that is opened gone up appended magnet steel quilt along with together removing, therefore this lamination electroceramics buz FM dry-reed tube in parallel with it opens a way, the tonepulse voltage that alarm sound producer XF sends can be loaded into this lamination electroceramics buz FM two ends, makes to send alarm sound; 7), be characterised in that: regulate regulator potentiometer W, change the frequency of high frequency oscillation part, when tonepulse electric voltage frequency and two series connected piezoelectric buzzer FM natural resonance frequencies are complementary, the alarm sound that is sent is for maximum, be higher than or when being lower than resonant frequency, alarm sound reduces.
Elevator safety detection alarm device specifically of the present invention comprises the magnet steel on the passive door that is installed in the elevator door, the dry-reed tube GB that matches with magnet steel, GC, be installed in the magnet steel and the corresponding dry-reed tube GA of car sill one side, detect relay J 1, control relay J2, well lighting relay J 3, piezoelectric buzzer FM and alarm sound producer XF, be connected in series mutually after dry-reed tube GA of each layer and the dry-reed tube GB parallel connection to insert and detect between relay J 1 and the Power Ground end, be connected in series mutually after the dry-reed tube GC that it is characterized in that each layer and the piezoelectric buzzer FM parallel connection, insert between the C end and Power Ground end GND of alarm sound producer XF; Detect that relay J 1 is connected to power positive end V+ and by dry-reed tube GA, dry-reed tube GB also connects between the terminals A that afterwards is connected in series the loop that forms, the power positive end V+ also contact J2-1 of the normally closed contact JI-2 by detecting relay J 1 or control relay J2 and inspection switch K and hoistway lamp relay J 3 joins, the other end power connection ground GND of hoistway lamp relay J 3, resistance R 1 one is terminated at power positive end V+, the other end and delay capacitor C1, the normally closed contact JI-1 that detects relay J 1 joins, the other two ends of detecting the normally closed contact JI-1 of relay J 1 are connected to " 1 " end of button switch AN and control relay J2 respectively, " 2 " end of another termination control relay of button switch AN J2, " 3 " termination power ground GND of control relay J2, the operating voltage termination of alarm sound producer XF detects the normally closed contact J1-2 of relay J 1, its negative terminal power connection ground GND.
Described alarm sound producer XF is common multi-resonant oscillating circuit, it is made up of low-frequency oscillatory network, repeating resistance and high-frequency oscillating circuits, low-frequency oscillatory network is made up of NAND gate 1,2, it links to each other with the high frequency generator circuit of being made up of NAND gate 3,4 by resistance R 3, is connected to adjust the regulator potentiometer W of oscillation frequency of HFS between power positive end V+ and NAND gate 3 mouths.
Beneficial effect of the present invention:
The present invention has simplified the passive door lock checkout facility of original elevator greatly, reduced the elevator manufacturing cost, the warning function of the pre-fall arrest elevator hoistways that it had, can adapt to the needs that different occasion elevator safeties are reported to the police, reduce significantly and take precautions against the elevator hoistways warning cost that falls, improved the reliability of self.
Warning volume of the present invention can be set up according to use occasion, and is applied widely.
The present invention with minimum cost recovery the deficiency of national standard, improved safety factor.
Description of drawings
Fig. 1 is the wiring schematic diagram of detection of the present invention, alarm element.
Fig. 2 is the circuit diagram of alarm control unit of the present invention.
Fig. 3 is the circuit diagram of alarm sound producer of the present invention.
Among the figure:
A, C, GND are for inserting the point of connection code name of alarm control unit, with A, C, the corresponding access of GND among Fig. 2; GA is the dry-reed tube that is installed on the landing sill, and GB, GC are the dry-reed tube that is installed on layer every head; FM is the code name that is installed on the elevator inlay door head and is connected on the piezoelectric buzzer that has resonant cavity of alarm sound generator circuit back; The numeral of GA, GB, GC and FM back is the code name of cooresponding each element of concrete floor, and N, S are the permanent-magnet steel code names; V+, GND are respectively control setup circuit diagram power positive end and ground terminal; J1 is for detecting relay, and JI-1, JI-2 are respectively two contacts detecting relay, and J2 is a control relay, and J2-1, J2-2 are two contacts of control relay, and J3 is a hoistway lamp relay; XF is the alarm sound producer; R1 is that dropping resistor, C1 are that delay capacitor, AN use button switch for resetting, and K is an inspection switch, and 1,2,3,4 are the integrated circuit code name in the NAND gate frame, and W is a regulator potentiometer, and R1 ' is a resistance.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
Shown in Fig. 1～3.
Referring to accompanying drawing 1, a pair of magnet steel N, S are installed on the passive door in elevator door, door pocket or door head in correspondence position are gone up two dry-reed tube GB, GC that are close together of installation, adjust its position, make it when layer door closed contact, appended magnet steel can make all reliably closure, the conductings of its two auxiliary contact to dry-reed tube GB, GC effect on the passive door.In car sill one side a pair of magnet steel is installed, corresponding to the horizontal direction position, a dry-reed tube GA is installed also on the landing sill, when lift car arrived at a station flat bed, dry-reed tube GA can be subjected to the appended magnet steel magnetic field effect of car sill and reliable closed, conducting.With the dry-reed tube GA two ends on the landing sill with lead be installed in this layer door pocket or one of them dry-reed tube GB of door head place mutually and connect, each layer is serially connected by lead with quadrat method and the dry-reed tube that connects according to above-mentioned with other again, insert between the detection relay J 1 and power supply GND in the control setup circuit shown in the accompanying drawing 2, finish to car leave district's deck door by the people when opening, the detection of the hoistway accident that prevents to fall.By detecting contact J1-2 and the alarm sound producer XF in the relay J 1, contact J1-1 is connected and contact J2-1 with control relay J2 in the alarm control unit, hoistway lamp relay J 3 is by inspection switch K, can obtain the voltage of work, any when door from level to level when the party concerned opens the car that leaves a district, alarm control unit just can send alarm sound at this layer, turn on the hoistway lamp simultaneously, remind the residing precarious position of party concerned, prevent to be strayed into the generation of elevator hoistways accident of falling.
By newly-increased control relay J2 the safety return circuit in its contact J2-2 and the elevator device is in series, thereby making whether normal relation between elevator passive door position and the car relative position is reflect in the safety return circuit of elevator device.In original elevator device in all layers door the secondary door lock of passive door one side contact switch device controlled, comprising that affiliated facility all saves need not, the door lock contact switch of active door one side all is chained together in all layers door, and the door lock that inserts in original elevator device detects the loop.
Referring to accompanying drawing 1, the another one dry-reed tube GC that is installed on the elevator inlay door head is in parallel by lead with the piezoelectric buzzer FM that is installed on the head, again with other each layer according to quadrat method and the dry-reed tube that connects, piezoelectric buzzer is serially connected, be connected to after the C end of the alarm sound producer XF in the control setup circuit shown in the accompanying drawing 2, when elevator door is opened, because appended magnet steel is together removed, cooresponding dry-reed tube GC recovers open-circuit condition, when applying audio voltage in C, during the GND two ends, just can make piezoelectric buzzer FM send alarm sound.
Referring to Fig. 2, detecting relay J 1 is connected between detection line figure A shown in the accompanying drawing 1 and the power positive end V+, power supply V+ also joins by detecting relay contact JI-2 or control relay contact J2-1 and inspection switch K and hoistway lamp relay J 3, hoistway lamp relay J 3 other end ground connection GND, resistance R 1 one is terminated at power positive end V+, the other end and delay capacitor C1, detecting relay contact JI-1 joins, detect " 1 " end that the other two ends of relay J 1 contact JI-1 are connected to button switch AN and control relay J2 respectively, " 2 " end of another termination control relay of button switch AN J2, " 3 " end ground connection GND of control relay J2, the inner detailed circuit of its alarm sound generator circuit XF is shown by accompanying drawing 3, operating voltage provides negativing ending grounding GND by detecting relay J 1 contact J1-2.
Fig. 3 is the circuit diagram of alarm sound producer XF, it is the multi-vibrator that a common CMOS integrated circuit NAND gate is formed, wherein NAND gate 1,2 form the low frequency oscillator output voltage can be by resistance R 3 controls by NAND gate 3,4 form the vibration of high frequency generator, be connected to regulator potentiometer W between power positive end V+ and NAND gate 3 mouths and can adjust the oscillation frequency of HFS, the pulsetone voltage that can obtain modulating at mouth, through piezoelectric buzzer FM, again with each floor layer every head shown in the accompanying drawing 1 on the C end of the piezoelectric buzzer FM that installed be in series, can in machine room and hoistway, send the alarm sound that makes party concerned's vigilance simultaneously by arbitrary door layer by layer.
Principle of work of the present invention is:
When the elevator normal operation, state as shown in Figure 2, if car is in the operation period, layer door that certainly will every layer all is in closed condition, a pair of magnet steel N, S are installed on the passive door, the dry-reed tube of being installed on door pocket or the door head is worked and makes its closing of contact, conducting.If arriving at a station, the car flat bed opens the door, though appended a pair of magnet steel together is removed, being installed in dry-reed tube GB2 on door pocket or the door head can not get the effect of magnet steel and opens a way, but since a pair of magnet steel installed of car sill made its layer the sill dry-reed tube GA2 closure of installing, conducting, can both form a path between above-mentioned two kinds of situation passive door position probing circuit A and the ground GND, detect between relay J 1 two ends voltage is arranged, the relay adhesive, because normally closed contact J1-2 open circuit, the alarm sound generator circuit can not get the voltage of power supply V+, there is not the output of tonepulse voltage, even the dry-reed tube GC2 that is close together with dry-reed tube GB2 also is open-circuit condition, this moment, piezoelectric buzzer FM in parallel with it also can't send the sound, same hoistway lamp relay J 3 two ends no-voltages, its not adhesive of contact, the hoistway lamp does not work, control relay J2 can not get voltage J2-2 contact and still maintains closure state on the other hand, the safety return circuit of elevator device can be in normal condition, and car meets condition of service.
When lift car leave the district and floor by the party concerned during artificially from floor door inside or external opening, the dry-reed tube GB that is installed on the elevator inlay door head is opening because of layer door also, appended magnet steel is no longer opened a way to its effect, because a pair of magnet steel that car sill is installed is also along with car is removed, no longer can be to the dry-reed tube GA effect of being installed on the landing sill, be open-circuit condition, be open-circuit condition between A in the accompanying drawing 1 in the elevator passive door position probing circuit and the ground GND, accompanying drawing 2 alarm control unit circuit relay electrical equipment J1 two ends lose voltage, relay contact J1-1, J1-2 together recovers normally off and connects, the connection of J1-1 makes voltage be added to " 1 " of relay J 2 through resistance R 1, " 3 " two ends, the relay contact state exchange, the relay contact J2-2 that is in series with the vital circuit of elevator device just can open a way, and makes elevator out of service.In addition on the one hand, because the closure of relay normally closed contact J1-2, alarm sound generator circuit XF obtains operating voltage, integrated circuit NAND gate 4 mouths just can the output audio pulse voltage, ring on the circuit through being added to the piezoelectric buzzer news shown in the accompanying drawing 1 after the piezoelectric buzzer FM again, because other layers of elevator door is in closed condition, dry-reed tube GB is acted on and closure by the appended magnet steel magnetic field of each layer door, its piezoelectric buzzer FM two ends are by short circuit, only that opened by the party concerned layer by layer the piezoelectric buzzer FM two ends on every head not by short circuit, the tonepulse voltage of accompanying drawing 3 alarm sound generator circuits output in fact just has been added in these two series connected piezoelectric buzzer FM, and upward (one is arranged in machine room, another is positioned on the improper layer door of opening), machine room be opened that send very brief alarm sound on every head layer by layer, the party concerned that layer door opened in prompting notes current precarious position, the hoistway accident that prevents to fall takes place, remind the maintainer to note simultaneously, current elevator device is set to run-stopping status by the elevator door warning.
And when the elevator normal operation, though the two ends of piezoelectric buzzer FM are not by dry-reed tube GC short circuit in parallel when normally opening layer door, but do not cut off the power supply owing to detecting relay J 1 this moment, in running order, its normally closed contact J1-2 is in off-state, therefore the alarm sound producer does not have voltage to add, so warning can not sent the sound yet.
By adjusting the regulator potentiometer W in the alarm sound generator circuit shown in the accompanying drawing 3, changed the tonepulse electric voltage frequency of HFS, when tonepulse electric voltage frequency and two series connected piezoelectric buzzer FM natural resonance frequencies are complementary, the alarm sound that is sent is for maximum, be higher than or when being lower than resonant frequency, alarm sound all will reduce, and but the different actual effects that do not influence warning of the height of tone adapt to the requirement of various different occasions to the alarm sound size with this simple method.
This shows that present embodiment is the technical scheme of the best that combines an integrated form of four technical schemes of the present invention (three methods add a device), can only implement the same safety performance that can improve and improve elevator of a part wherein during concrete enforcement as required, see embodiment two, three for details.
Embodiment two.
Piezoelectric buzzer FM and corresponding dry-reed tube GC thereof when being to implement, the difference of present embodiment and embodiment one can be installed, schematic diagram and Fig. 1,2 roughly the same, institute's difference has been to cancel piezoelectric buzzer FM and corresponding dry-reed tube GC thereof wherein, also need not adopt tuning circuit shown in Figure 3.
Embodiment three.
The difference of present embodiment and embodiment one is that the volume of the piezoelectric buzzer FM that installs can not adjust, and promptly can not adjust in case set.Schematic diagram and Fig. 1,2 roughly the same, different is the FM circuit that does not adopt the described band potential device of Fig. 3.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (4)
1. elevator safety system, by forming with the lower part:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, two dry-reed tube GB, GC that are close together are installed, adjust its position, make that the magnet steel of being installed on the passive door can make dry-reed tube GB, GC closure, conducting when layer door closed contact; 2), a pair of magnet steel is installed, a cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjusts its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed in car sill one side; 3), will go up the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, GB with each layer and after connecting contacts mutually and inserts between detection relay J 1 and the Power Ground end in the alarm control unit again, is connected with alarm sound producer XF by the contact J1-2 in the detection relay J 1; 4) described alarm sound producer XF is made up of low-frequency oscillatory network, repeating resistance and high-frequency oscillating circuits, low-frequency oscillatory network is made up of NAND gate 1,2, it links to each other with the high frequency generator circuit of being made up of NAND gate 3,4 by resistance R 3, be connected to the regulator potentiometer W of the oscillation frequency of scalable HFS between power positive end V+ and NAND gate 3 mouths, the positive voltage of alarm sound producer XF is obtained by the normally closed contact J1-2 access that detects relay J 1; 5), be characterised in that: be installed on door pocket or the door head dry-reed tube GC and the piezoelectric buzzer FM that is installed in same position mutually and connect, after then the C of the alarm sound producer XF in the Access Control loop of being made up of dry-reed tube GC and piezoelectric buzzer FM after also connection circuit is connected in series of all each layers being held.
2. elevator safety system, improve elevator essential safety performance by the following method:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, dry-reed tube GB is installed, adjust its position, make that the magnet steel of being installed on the passive door can make dry-reed tube GB closure, conducting when layer door closed contact; 2), a pair of magnet steel is installed, a cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjusts its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed in car sill one side; 3), will upward the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, the GB with each layer and after connecting contacts between the detection relay J 1 and Power Ground end in the access alarm control unit mutually again; 4), the contact JI-2 that detects in the relay J 1 meets R1 and C1, R1 other end power connection anode V+, C1 other end ground terminal GND, detect " 1 " end of the normally closed termination control relay of the contact JI-2 J2 of relay J 1, " 2 " end of control relay J2 joins " 3 " termination ground terminal GND by rest button AN and the contact JI-2 Chang Kaiduan that detects relay J 1; 5), an end of hoistway lamp relay J 3 is linked to each other with Power Ground end GND, the other end links to each other with normally closed contact J1-2 that detects relay J 1 or the contact J2-1 of control relay J2 by inspection switch K; 6), be characterised in that: make that original safety return circuit is in series in contact J2-2 among the control relay J2 and the elevator device, finish when car to be left district's deck door be detection when opening by the people, making whether normal relation between elevator passive door position and the car relative position is reflects in the safety return circuit of elevator device, the door lock contact switch of active door one side all is chained together in all layers door, the door lock that inserts in original elevator device detects the loop, in original elevator device in all layers door the secondary door lock of passive door one side contact switch device controlled, comprising that affiliated facility all saves need not.
3. elevator safety system, improve elevator essential safety performance by the following method:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, two dry-reed tube GB, GC that are close together are installed, adjust its position, make when layer door closed contact, the magnet steel of being installed on the passive door can make dry-reed tube GB, GC closure, conducting: 2), in car sill one side a pair of magnet steel is installed, one cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjust its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed; 3), will go up the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, GB with each layer and after connecting contacts mutually and inserts between detection relay J 1 and the Power Ground end in the alarm control unit again, is connected with alarm sound producer XF by the contact J1-2 in the detection relay J 1; 4), alarm sound producer XF is made up of low-frequency oscillatory network, repeating resistance and high-frequency oscillating circuits, low-frequency oscillatory network is made up of NAND gate 1,2, it links to each other with the high frequency generator circuit of being made up of NAND gate 3,4 by resistance R 3, be connected to the regulator potentiometer W of the oscillation frequency of scalable HFS between power positive end V+ and NAND gate 3 mouths, the power end of alarm sound producer XF links to each other with the normally closed contact J1-2 that detects relay J 1; 5), on door pocket or door head, install dry-reed tube GC and with the piezoelectric buzzer FM that is installed in same position mutually and connect, after then the C of the alarm sound producer XF in the Access Control loop of being made up of dry-reed tube GC and piezoelectric buzzer FM after also connection circuit is connected in series of all each layers being held; 6), be characterised in that: after lift car leaves a district, the layer door that is opened gone up appended magnet steel quilt along with together removing, therefore this lamination electroceramics buz FM dry-reed tube in parallel with it opens a way, the tonepulse voltage that alarm sound producer XF sends can be loaded into this lamination electroceramics buz FM two ends, makes the piezoelectric buzzer of place floor and the piezoelectric buzzer FM that is positioned at elevator(lift) machine room send alarm sound simultaneously.
4. elevator, improve elevator essential safety performance by the following method:
1), a pair of magnet steel is installed on the passive door in elevator door, simultaneously on corresponding to the door pocket of magnet steel position or door head, two dry-reed tube GB, GC that are close together are installed, adjust its position, make that the magnet steel of being installed on the passive door can make dry-reed tube GB, GC closure, conducting when layer door closed contact; 2), a pair of magnet steel is installed, a cooresponding dry-reed tube GA is installed on landing sill simultaneously, adjusts its position, make that the magnet steel on the car sill can make dry-reed tube GA closure, conducting when lift car arrives at a station flat bed in car sill one side; 3), will go up the dry-reed tube GB that installs mutually and connect with the dry-reed tube GA that installs on the gate sill from level to level and corresponding door pocket or door head with lead, dry-reed tube GA, GB with each layer and after connecting contacts mutually and inserts between detection relay J 1 and the Power Ground end in the alarm control unit again, is connected with alarm sound producer XF by the contact J1-2 in the detection relay J 1; 4), alarm sound producer XF is made up of low-frequency oscillatory network, repeating resistance and high-frequency oscillating circuits, low-frequency oscillatory network is made up of NAND gate 1,2, it links to each other with the high frequency generator circuit of being made up of NAND gate 3,4 by resistance R 3, be connected to the regulator potentiometer W of the oscillation frequency of scalable HFS between power positive end V+ and NAND gate 3 mouths, the power end of alarm sound producer XF links to each other with the normally closed contact J1-2 that detects relay J 1; 5), make dry-reed tube GC that is installed on door pocket or the door head and the piezoelectric buzzer FM that is installed in same position mutually and connect, after then the C of the alarm sound producer XF in the Access Control loop of being made up of dry-reed tube GC and piezoelectric buzzer FM after also connection circuit is connected in series of all each layers being held; 6) after, lift car leaves a district, the layer door that is opened gone up appended magnet steel quilt along with together removing, therefore this lamination electroceramics buz FM dry-reed tube in parallel with it opens a way, the tonepulse voltage that alarm sound producer XF sends can be loaded into this lamination electroceramics buz FM two ends, makes to send alarm sound; 7), be characterised in that: regulate regulator potentiometer W, change the frequency of high frequency oscillation part, when tonepulse electric voltage frequency and two series connected piezoelectric buzzer FM natural resonance frequencies are complementary, the alarm sound that is sent is for maximum, be higher than or when being lower than resonant frequency, alarm sound reduces.
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| CN2008100192966A CN101214897B (en) | 2008-01-18 | 2008-01-18 | Elevator safety system |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157686A (en) * | 1982-03-16 | 1983-09-19 | 三菱電機株式会社 | Operating device for elevator |
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| CN100395166C (en) * | 2005-01-07 | 2008-06-18 | 陈金林 | Controller and controlling method for preventing elevator from harming event |
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2008
- 2008-01-18 CN CN2008100192966A patent/CN101214897B/en active Active
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