CN2568609Y

CN2568609Y - Anti-faling, anti-shearing elevator door safety lock

Info

Publication number: CN2568609Y
Application number: CN 02265955
Authority: CN
Inventors: 张广兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-29
Filing date: 2002-07-29
Publication date: 2003-08-27
Anticipated expiration: 2012-07-29

Abstract

The utility model discloses a crash and cutting preventing elevator safety door lock. Door locks on each floor are additionally provided with position detectors and speech alarm circuits, and an elevator machine room is additionally provided with a controller. The position detectors are respectively arranged on a door lock hook seat on each floor and are composed of elevator car position sensors, floor door switch position safety contacts, relays and other resistor capacitor elements; one of the floor door switch position safety contact is composed of a contact installed on a lock arm and a contact installed in a lock hook box and is connected with the relays after being connected with the elevator car position sensors in parallel; the controller is composed of a transformer, a bridge type rectification circuit, a voltage stabilizing integrated block, a backup power supply, an automatic charging and converting circuit and a control relay; relay normally opened contacts in each position detector are connected with the control relay after being connected in series for realizing the control of each floor to elevators. The utility model has the advantages of novel structure, low cost, high safety and convenient installation and debugging, can effectively prevent crash and cutting accidents and is easily made into a product.

Description

Dropping-and shearing-preventing elevator safety door lock

Technical field

The utility model relates to a kind of elevator accessory, relates in particular to a kind of door lock of elevator.

Background technology

Modern society's skyscraper increases day by day, elevator has become human requisite vertical transport instrument, so elevator is directly connected to people's life security as its safety performance of special equipment, in order to ensure safety, elevator is provided with multiple safety guard, but for various reasons, the elevator safety accident still takes place again and again, mainly is divided into following several types according to the type of analysis, elevator safety accident: 1, open the door operation, personnel's shear extrusion accident of elevator; 2, car is not at this layer, and personnel enter the hoistway falling accident from layer door; 3, lift car rush to summit, falling accident; 4, other contingencies.From domestic and international accident case analysis, 1,2 class accidents account for more than 90% of total accident rate, and the generation of 1,2 class accidents is all relevant with layer door lock and electric interlocking circuit thereof.Though domestic and international used door lock of elevator has the electric interlocking circuit at present, but can't prevent effectively that the electric interlocking circuit is out of order or when overhauling artificial short circuit do not recover, cause the operations staff that opens the door to be sheared the generation of extruding accident, can't prevent that more car is not at this layer, personnel open layer door with triangular key and are strayed into the fall generation of fatal accident of hoistway outside the Room, because it is more that such accident takes place, do not have technically under the situation of fine solution, each elevator company is in order to prevent the generation of such accident now, the method that can only take to work out triangular key opening door operation rules or hang warning sign on triangular key reminds operating personal to take care, but effect is unsatisfactory.

Summary of the invention

The purpose of this utility model is: overcomes the above-mentioned defective of existing layer door lock, provides a kind of multiple functional, and novel structure, reliable operation, easy to install, can prevent from effectively to fall prevents the novel elevator safety door latch sheared.

The utility model is realized by following scheme: each layer by layer door lock set up position detector and set up controller at elevator(lift) machine room, use wire coupling between each layer position detector and the controller.Position detector is arranged at respectively on each layer door lock hook seat, and is made up of car position sensor, layer door switch location security contact, relay and other Resistor-Capacitor Unit.Layer door switch location security contact by forming the contact that is contained in the contact on the hammerlock and be contained in the latch hook box, and joins be in parallel back and relay of car position sensor, in order to the switching of control relay.Controller is made up of voltage transformer, bridge rectifier circuit, integrated package of pressure-stabilizing, backup power, automatic charging conversion circuit and control relay, join with control relay after relay normally open contact in each position detector is in series, realize the control of each layer elevator.

The utility model also has additional the language alarm circuit, form by stabilivolt, speech IC, aerotron, loud speaker and other Resistor-Capacitor Unit, the stabilivolt input end connects relay normally closed contact in the car position detector by resistance, speech IC exports aerotron to, to promote the loud speaker sounding alarm.

The utility model novel structure, cost is low, and is safe and reliable, and antijamming capability is strong, and Installation and Debugging are convenient, and can effectively prevent to fall prevents the generation of shearing accident, is suitable for various types of elevator job requirements, is easy to commercialization, applies.

Description of drawings

Fig. 1 is the utility model overall structure scheme drawing;

Fig. 2 is the utility model position detector and voice alarm circuit figure;

Fig. 3 is the utility model controller circuitry figure;

Fig. 4 is the electric connection figure of the utility model;

Fig. 5 is one of a utility model car position sensor structural representation;

Fig. 6 is two structural representations of the utility model car position sensor;

Fig. 7 is three structural representations of the utility model car position sensor.

The specific embodiment

Contrasting accompanying drawing below in conjunction with embodiment is elaborated to the utility model.

Embodiment 1

Present embodiment is made up of hammerlock seat 1, roller 2, spring 3, lock hook seat 5, contact, the passive door switch position 6, latch hook 7, hammerlock 8 and layer gate interlock contact 9, and on lock hook seat 5, set up position detector 10, voice alarm circuit 12, set up a controller 13 at elevator(lift) machine room.Connect with lead between each layer position detector and the controller.Position detector is made up of car position sensors A G, layer door switch location security contact XL, relay J and elements such as resistance R 1 and LED, be connected in the relay J circuit after the contact of car position sensors A G, the contact XL parallel connection of layer door switch location security, in order to the switching of control relay.Layer door switch location security contact XL is by forming the contact that is contained in the contact on the hammerlock and be contained in the latch hook box, in order to the state of detection layers door switch; Car position sensors A G is made up of with the permanent magnet ZT that is contained in the car correspondence position the dry-reed tube ZL that is loaded on the lock hook seat 5, in order to whether to detect car in this layer position.Voice alarm circuit is by stabilivolt DW, speech IC IC1, resistance R 2, R3, capacitor C 1, C2, aerotron V and loud speaker B form, stabilivolt DW cross-over connection is in 1 of speech IC IC1 power end pin 7 and grounding leg, and succeed electrical equipment J normally closed contact one end through resistance R 2, it is in parallel after resistance R 3 is connected with capacitor C 2 with stabilivolt DW, capacitor C 1 cross-over connection is in 1 of relay J normally closed contact one end and speech IC IC1 grounding leg, speech IC IC1 mouth pin 4 connects aerotron V base stage, its collecting electrode meets loud speaker B, emitter connects speech IC IC1 pin 1, and at capacitor C 1 two ends and be connected to alert lamp XD.Controller is by voltage transformer T, bridge rectifier circuit D1-D4, integrated package of pressure-stabilizing IC2, backup power E, by diode D5, resistance R 5, the automatic charging conversion circuit that diode D6 constitutes, control relay ZJ forms, the voltage transformer T just utmost point connects the 220V power supply, the secondary D1-D4 rectifying circuit that connects, the direct current of D1-D4 rectifying circuit output direct current after integrated package of pressure-stabilizing IC2 voltage stabilizing supplied with control relay ZJ and through terminals L1, L2 supplies with each layer door lock power supply, integrated package of pressure-stabilizing IC2 output terminating diode D5 anode, resistance R 5, after the diode D6 parallel connection and the series arm cross-over connection of backup power E between diode D5 negative terminal and terminals L2, the open contact J2 of the relay J in each layer door position detector, 1J2,2J2...NJ2 series connection is after C1, in the C2 terminals Access Control relay ZJ circuit, control relay ZJ is controlled by the relay J in the arbitrary layer of latch position detector wherein, the open contact ZJ1 of control relay ZJ is through B1, the B2 terminals are serially connected with elevator safety loop, and it is logical, disconnected may command elevator moves and stops; Normally closed contact ZJ2 can control warnings such as other light through D1, D2 terminals.

The principle of work of present embodiment is as follows: whether car position sensor and layer door switch position probing safety contact detect car respectively at the on off state of this layer with layer door.When car was parked in level position, the contact of dry-reed tube AG was connected under the magnetic action of permanent magnet ZT, after car leaves level position, owing to lose the magnetic action of permanent magnet ZT, and dry-reed tube AG contact open, thus reach the purpose that detects car position.Layer door switch location security contact XL is by forming the contact that is contained in the contact on the hammerlock and be contained in the latch hook box, when layer door closed, the engagement of hammerlock latch hook, contact XL connects, when layer door opened, hammerlock breaks away from latch hook, thereby XL disconnection in contact reaches the purpose whether the detection layers door is opened.

Relay J dead electricity when AG and XL disconnect simultaneously, its normally closed contact J1 connects, signal lamp XD lights, IC1 gets electric work, promote the chimes of doom that loud speaker B sends " car not at this layer, please note safety " through V, relay normally open contact J2 disconnects simultaneously, makes the control relay ZJ dead electricity in the controller.

E is a backup power in the controller, through D5, R5 it is charged during mains-supplied, and E to relay ZJ, circuit L1, L2 power supply, guarantees when outage this protection system normal operation through D6 when outage.Control relay ZJ is subjected to relay normally open contact J2, the 1J2 in each layer latch position detector, the control of 2J2...NJ2, the relay J dead electricity in arbitrary layer of latch position detector wherein, its open contact J2,1J2,2J2...NJ2 disconnect, control relay ZJ is with dead electricity, its normal switch contact ZJ1 that inserts elevator safety loop disconnects, force elevator out of service, normally closed contact ZJ2 connects, and connects other light warning.

When car is parked in this layer, contact A G connects, and this moment is layer door switch whether no matter, and whether contact XL disconnects connection, relay J all electric adhesive, normally closed contact J1 disconnects, and the language alarm circuit is not worked, and contact J2 connects, control relay ZJ adhesive, ZJ1 connects, and elevator safety loop is connected, and elevator can normally move.

When car during not at this layer, contact A G disconnects, hammerlock and latch hook engagement when layer door closed, contact XL connects, and relay J gets electric adhesive, contact J1 disconnects, the language alarm circuit is not worked, and contact J2 connects ZJ adhesive ZJ1 and connects, and elevator safety loop is connected, if have the human triangular key to open a layer door lock this moment outside the Room, when latch hook and hammerlock were thrown off, contact XL disconnected the relay J dead electricity, and contact J1 connects, the language alarm circuit is connected the chimes of doom send " car is not at this layer; please note safety ", and simultaneously bright lamp is warned, the personnel's of preventing hoistway that falls, contact J2 disconnects simultaneously, cuts off elevator safety loop.

When car is parked in this layer position and opens the door up and down the passenger, layer door switch location security contact XL disconnects, if elevator layer car door interlock circuit breaks down or when overhauling artificial short circuit do not recover, the danger of the ladder that opens the door away will be had, this moment is if there are other landing calls, elevator starts operation, but as long as car leaves the range of control of car position sensor, the contact of sensors A G promptly disconnects, the relay J dead electricity, normally closed contact J1 connects, the language alarm circuit alarm, contact J2 disconnects, the ZJ relay electric-loss, contact ZJ1 disconnects elevator safety loop and disconnects, force elevator out of service, thereby the personnel that prevent are sheared, the generation of extruding accident.

After layer gate shuts, when elevator normally moves, so because contact XL connects the normal operation that does not influence elevator.

Embodiment 2

The car position sensors A G of present embodiment is made up of the permanent magnet that is loaded on the Hall element on the lock hook seat 5 and is contained in the car correspondence position, and other structure is with embodiment 1.

Embodiment 3

The car position sensors A G of present embodiment can be infrared or laser sensor, and its projector and receptor are loaded on the lock hook seat 5, and its reflecting plate is contained on the car correspondence position, and other structure is with embodiment 1.

Claims

1, a kind of dropping-and shearing-preventing elevator safety door lock, by hammerlock seat (1), roller (2), spring (3), lock hook seat (5), contact, the passive door switch position (6), latch hook (7), hammerlock (8) and layer gate interlock contact (9) are formed, it is characterized in that: on each layer door lock lock hook seat (5), set up position detector (10), set up a controller (13) at elevator(lift) machine room, connect with lead between each layer position detector and the controller, position detector is by car position sensor (AG), layer door switch location security contact (XL), relay (J) and resistance (R1) and light-emitting diode elements such as (LED) are formed, the contact of car position sensor (AG), be connected in relay (J) circuit after layer door switch location security contact (XL) parallel connection, layer door switch location security contact (XL) is made up of the contact that is contained in the contact on the hammerlock and be contained in the latch hook box; Car position sensor (AG) is loaded on the dry-reed tube on the lock hook seat (5) and is loaded on the permanent magnet composition of car correspondence position; Controller is by voltage transformer (T), bridge rectifier circuit (D1-D4), integrated package of pressure-stabilizing (IC2), backup power (E), by diode (D5), resistance (R5), the automatic charging conversion circuit that diode (D6) constitutes, control relay (ZJ) is formed, voltage transformer (T) the just utmost point connects the 220V power supply, the secondary rectifying circuit (D1-D4) that connects, the direct current of rectifying circuit (D1-D4) output direct current after integrated package of pressure-stabilizing (IC2) voltage stabilizing supplied with relay (ZJ) and through terminals (L1, L2) supply with each layer door lock power supply, integrated package of pressure-stabilizing (IC2) output terminating diode (D5) anode, resistance (R5), the series arm cross-over connection of diode (D6) back in parallel and backup power (E) is between diode (D5) negative terminal and terminals (L2), open contact (the J2 of the relay (J) in each layer latch position detector, 1J2,2J2...NJ2) series connection after succeed in electrical equipment (ZJ) circuit, control relay (ZJ) is subjected to wherein relay (J) control in the arbitrary layer of door position detector, and the open contact (ZJ1) of control relay (ZJ) is serially connected with elevator safety loop.

2, dropping-and shearing-preventing elevator safety door lock according to claim 1, it is characterized in that: also have additional voice alarm circuit, voice alarm circuit is by stabilivolt (DW), speech IC (IC1), resistance (R2, R3), electric capacity (C1, C2), aerotron (V) and loud speaker (B) are formed, stabilivolt (DW) cross-over connection is in 1 of speech IC (IC1) power end pin 7 and grounding leg, and succeed electrical equipment (J) normally closed contact one end through resistance (R2), it is in parallel after resistance (R3) is connected with electric capacity (C2) with stabilivolt (DW), electric capacity (C1) cross-over connection is in 1 of relay (J) normally closed contact one end and speech IC (IC1) grounding leg, speech IC (IC1) mouth pin 4 connects aerotron (V) base stage, its collecting electrode connects loud speaker (B), and emitter connects speech IC (IC1) pin 1.

3, dropping-and shearing-preventing elevator safety door lock according to claim 2 is characterized in that: electric capacity (C1) two ends are parallel with signal lamp (XD).

4, dropping-and shearing-preventing elevator safety door lock according to claim 1 and 2 is characterized in that: car position sensor (AG) is made up of with the permanent magnet that is contained in the car correspondence position the dry-reed tube that is loaded on the lock hook seat (5).

5, dropping-and shearing-preventing elevator safety door lock according to claim 1 and 2 is characterized in that: the car position sensor is made up of the permanent magnet that is loaded on the Hall element on the lock hook seat (5) and is contained in the car correspondence position.

6, dropping-and shearing-preventing elevator safety door lock according to claim 1 and 2, it is characterized in that: car position sensor (AG) can be infrared or laser sensor, its projector and receptor are loaded on the lock hook seat (5), and its reflecting plate is contained on the car correspondence position.