CN101941631A

CN101941631A - Anti-short-circuit system of elevator door lock

Info

Publication number: CN101941631A
Application number: CN2010102723933A
Authority: CN
Inventors: 余金洪
Original assignee: GUANGDONG WINONE ELEVATOR CO Ltd
Current assignee: GUANGDONG WINONE ELEVATOR CO Ltd
Priority date: 2010-09-01
Filing date: 2010-09-01
Publication date: 2011-01-12

Abstract

The invention discloses an anti-short-circuit system of an elevator door lock. The system comprises a serial loop 1 consisting of a car door lock SW1 and hoistway door locks SW2-SW5 of all floors, an overhaul loop 6, a short-circuit relay 21 and a special short-circuit needle 22, wherein the head end and the tail end of the serial loop 1 are respectively provided with two connecting points A and B; the overhaul loop 6 is provided with a common end 7; the special short-circuit needle 22 is provided with four contacts, and two of the four contacts form a serial loop 2 with the short-circuit relay 21; the serial loop 2 is connected with the serial loop 1 in parallel through the connecting points A and B; the other two contacts of the special short-circuit needle 22 form a serial loop 3 with the short-circuit relay 21, and a direct current power supply 4 is used for supplying power to the serial loop 3; and the common end 7 is electrically connected with the short-circuit relay 21. The system has the advantages of simple structure, safety and reliability, can guarantee the safety of elevator passengers and maintenance personnel and can be widely applied to various elevators.

Description

Door lock of elevator is prevented the short circuit system

Technical field

The invention belongs to the elevator field, relate to the door lock of elevator system, specifically, relate to the anti-short circuit system of door lock of elevator.

Background technology

Elevator brings the various whiles easily to people, a lot of hidden danger that also lie dormant, and wherein door-locking system relevant (ladder for example opens the door away) is all followed in the generation of most problems.Therefore; elevator door has crucial effect in the safe operation of elevator; it is as the fender guard of a kind of fall arrest and shearing; the normal operation of elevator depends on effectively closing of layer door; and under normal conditions; the means that checking layer door effectively closed are gate, door loop, the Room to be together in series deliver to control loop as a signal and detect mostly, with one of this condition of moving as necessity (see figure 1).But in the elevator reparing working process, sometimes need the short circuit loop of the door lock, as the A among direct short circuit Fig. 1, B 2 points, but after work is finished, since the carelessness do not pull down shorting stub or since unforeseen circumstances cause the door lock short circuit, elevator is moved under the situation of opening the door, then very likely cause falling and shearing of maintainer.

At present, the part elevator has adopted door lock contact tension sampling input media on the market, but still the generation that can not stop above-mentioned situation fully, promptly when the short circuit door lock, still can cause the elevator operation, to return this step of flat bed the most dangerous for elevator when particularly elevator entered inspecting state and recovers normally to move again, and causes the injury to the maintainer especially easily.All there is such potential safety hazard in the loop of the door lock of comprehensive all elevator company's elevators, and passenger and maintainer's personal safety is all had threat.

Summary of the invention

Weak point at existing door lock control loop, the special anti-short circuit system of door lock of elevator that proposes of the present invention, it makes elevator in the short circuit door lock, elevator changes inspecting state by force over to, prevent the maintainer having overhauled that the back recovers on sedan-chair top that the elevator(lift) machine room door lock shorting stub of normal back is not removed elevator fly start and the maintainer is produced the danger of shearing.

Door lock of elevator is prevented the short circuit system, comprise the series loop 1 that the Room door lock SW2-SW5 by gate lock SW1 and each layer forms, the two ends of described series loop 1 have two point of connection of A, B respectively, also comprise maintenance loop 6, maintenance loop 6 is provided with common port 7, and it also comprises short circuit relay 21, special-purpose short circuit pin 22, and special-purpose short circuit pin 22 has 4 contacts, wherein 2 contacts and short circuit relay 21 form series loops 2, and series loop 2 is by point of connection A, B and series loop 1 parallel connection; Other 2 contacts of special-purpose short circuit pin 22 and short circuit relay 21 form series loop 3, and series loop 3 is by direct supply 4 power supplies; The normally closed contact of common port 7 and short circuit relay 21 is electrically connected.

For whether show elevator door intuitively locks short circuit, the two ends connect in parallel door lock short circuit indicator lamp 5 of short circuit relay 21.

According to the electrical property difference that circuit is touched the concrete vigour part of piece, the voltage of direct supply 4 is 15V-30V.

Principle of work of the present invention is: when needs short circuit door lock carries out maintenance activity, only need plug special-purpose short circuit pin 22 just can realize short circuit, when special-purpose short circuit pin 22 short circuits, short circuit relay 21, door lock short circuit indicator lamp 5 will be lighted simultaneously, the normally closed contact of short circuit relay 21 will disconnect, and promptly disconnect maintenance loop 6, the elevator forced inspecting state that enters.

Outstanding effect of the present invention is: (1) can ensure the safety to passenger and maintainer.Because above-mentioned setting, during short circuit pin 22 short circuits of the present invention, the elevator forced inspecting state that enters is stopped elevator and is moved under the situation of opening the door, and ensures passenger and maintainer's safety; (2) simple in structure, reliable and stable.Used electronic element kind of the present invention and quantity are few, simple in structure, all can install the technology of the present invention device additional on the elevator of any kind of, and operation that can be reliable and stable.

Because above-mentioned outstanding effect, the present invention is widely used in all kinds of elevators.

Description of drawings

Fig. 1 is the structure principle chart of prior art door lock;

Structure principle chart when Fig. 2 is a door lock short circuit of the present invention;

Fig. 3 is the structure principle chart of door lock short circuit indicator lamp 5 of the present invention;

Fig. 4 is the structure principle chart that maintenance loop 6 is electrically connected with short circuit relay 21 among the present invention.

The specific embodiment

Describe in further detail below in conjunction with accompanying drawing and to the present invention.

As shown in Figure 2, door lock of elevator is prevented the short circuit system, comprise the series loop 1 that the Room door lock SW2-SW5 by gate lock SW1 and each layer forms, the two ends of described series loop 1 have two point of connection of A, B respectively, it also comprises short circuit relay 21, special-purpose short circuit pin 22, special-purpose short circuit pin 22 has 4 contacts, and wherein 2 contacts and short circuit relay 21 form series loops 2, and series loop 2 is by point of connection A, B and series loop 1 parallel connection.

As shown in Figure 3, other 2 contacts of special-purpose short circuit pin 22 and short circuit relay 21 form series loop 3, and series loop 3 is by direct supply 4 power supplies, and power line voltage can be made as 24V.For whether show elevator door intuitively locks short circuit, the two ends connect in parallel door lock short circuit indicator lamp 5 of short circuit relay 21.

As shown in Figure 4, the present invention also comprises maintenance loop 6, and maintenance loop 6 is provided with common port 7, and the normally closed contact of common port 7 and short circuit relay 21 is electrically connected.

Comprehensive above-mentioned 3 accompanying drawings, working process of the present invention is: when the maintainer carries out maintenance activity to elevator, only need plug special-purpose short circuit pin 22 just can realize the door lock short circuit, when special-purpose short circuit pin 22 short circuits, short circuit relay 21, door lock short circuit indicator lamp 5 will be lighted simultaneously, show the short circuit state of door lock this moment.Simultaneously, the normally closed contact of short circuit relay 21 will disconnect, and promptly disconnect maintenance loop 6, the elevator forced inspecting state that enters.

Claims

1. door lock of elevator is prevented the short circuit system, comprise the series loop (1) that the Room door lock (SW2-SW5) by gate lock (SW1) and each layer forms, the two ends of described series loop (1) have A respectively, two point of connection of B, also comprise maintenance loop (6), described maintenance loop (6) is provided with common port (7), it is characterized in that: also comprise short circuit relay (21), special-purpose short circuit pin (22), described special-purpose short circuit pin (22) has 4 contacts, wherein 2 contacts and the described short circuit relay (21) of described special-purpose short circuit pin (22) form series loop (2), and described series loop (2) is by described point of connection A, B and described series loop (1) parallel connection; Other 2 contacts of described special-purpose short circuit pin (22) and described short circuit relay (21) form series loop (3), and described series loop (3) is powered by direct supply (4); The normally closed contact of described common port (7) and described short circuit relay (21) is electrically connected.

2. door lock of elevator according to claim 1 is prevented the short circuit system, it is characterized in that: the two ends connect in parallel door lock short circuit indicator lamps (5) of described short circuit relay (21).

3. door lock of elevator according to claim 1 is prevented the short circuit system, it is characterized in that: the voltage of described direct supply (4) is 15V-30V.