CN203976151U

CN203976151U - A kind of normal open switch that can distinguish the short circuit Room, gate lock on sedan-chair top

Info

Publication number: CN203976151U
Application number: CN201420293611.5U
Authority: CN
Inventors: 姚长云
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-27
Filing date: 2014-05-27
Publication date: 2014-12-03
Anticipated expiration: 2024-05-27

Abstract

A kind of normal open switch that can distinguish the short circuit Room, gate lock on sedan-chair top, the utility model has only been done less change to the original maintenance box of elevator circuit, after the Room, the maintenance of gate lock, when maintainer exits sedan-chair top, inspection switch is returned to after normal condition, and elevator can drop into normal operation.Now, the Room, gate normal open switch all can be in the state of disconnection.So just can avoid because maintainer forgets that taking out the shorting stub of the Room, gate lock brings the accident of shearing passenger to occur, and has also alleviated the work capacity of elevator service personnel simultaneously.

Description

A kind of normal open switch that can distinguish the short circuit Room, gate lock on sedan-chair top

Technical field

The utility model relates to the safety method of vertical lift, is a kind of normal open switch that can distinguish the short circuit Room, gate lock on sedan-chair top that is arranged on specifically.

Background technology

Elevator is the conventional instrument of people in modern society, in recent years, because many so tragic that one cannot bear to look at it casualty accidents have in use occurred elevator, makes some passenger forbidding to elevator.And many elevators shearing passengers' serious accident is all because maintainer is after maintenance work completes, forgets the Room in machine room control housing, car door lock shorting stub are taken out and occurred.For this reason, some elevator companies are to being used the Room, the shorting stub of gate lock to formulate strict regulation, once violate, the lighter carries out huge fine and processes, and severe one removes name from the rolls processing, and obviously, these regulations neither preferred plan.

The utility model just can address the above problem.First analyze maintainer and why want the short circuit Room, gate lock loop, because when elevator is due to the Room, gate lock bad contact or the Room, gate is stuck and after stopping, maintainer does not also know it is Room door or the bad contact of gate lock of which floor, and to check each layer of Room door lock, just must allow elevator can make inspection travel, but when any one Room door or gate lock-switch are obstructed, elevator all can not be made inspection travel, so, maintainer has to all Room doors or gate to lock short circuits, then, with inspection speed, in hoistway, hoistway door door lock is successively checked.This work capacity is very large, so, after long inspection work, although the fault of the Room, gate lock has been got rid of, may forget that machine room takes out the Room, the shorting stub of gate lock.Because each maintainer will maintain many elevators, so stress is larger, easily forget thing, the immediate cause of elevator generation shearing accident that Here it is.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of improvement project: two Rooms, gate normal open switch are installed on car top inspection station.After Lift out of order, maintainer must first rotate inspection switch on sedan-chair top, pin respectively again two Rooms of often opening, gate switch and uplink and downlink button and see that can elevator make inspection travel, just can judge whether the Room of elevator, gate break down, thereby elevator is keeped in repair.When maintainer leaves behind sedan-chair top, two normal open switch just remain on the state of disconnection automatically, forget the problem of taking out the Room, the shorting stub of gate lock like this with regard to fundamentally having solved maintainer.

When elevator stops upper and lower passenger under normal operating condition, if do not rotate inspection switch, can not the disconnecting Room even if maintainer presses the Room, gate normal open switch, gate lock, so just can prevent that the shearing that maintainer causes passenger because of maloperation from injuring.

The utility model has only been done less change to the original maintenance box of elevator and circuit, can avoid said in background technology and forget to take out and bring the accident of shearing passenger to occur due to the shorting stub of the Room, gate lock, also alleviate the work capacity of elevator service personnel simultaneously.

Accompanying drawing explanation

Fig. 1 is the utility model car top inspection station embodiment schematic diagram.

Fig. 2 is a kind of connection embodiment schematic diagram of safety return circuit.

In figure: 1-car top inspection station, 2-inspection switch, 3-Room door normal open switch, 4-gate normal open switch, 5-jigger wheel switch, 6-security window switch, 7-sedan-chair top emergency stop switch, 8-safety gear switch, 9-governor switch, 10-limes superiors switch, 11-smallest limit switch, 12-buffer switch, 13-expansion tightening wheel switch, 14-pit emergency stop switch, the urgent motor switch of 15-, 16-safety return circuit relay coil, 17-bottom Room door lock, 18-interlayer Room door lock, 19-top layer Room door lock, 20-gate lock.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated: as shown in Fig. 1,2, the described a kind of normal open switch that can distinguish the short circuit Room, gate lock on sedan-chair top, comprising: car top inspection station 1, inspection switch 2, Room door normal open switch 3, gate normal open switch 4.Described car top inspection station 1 is arranged on car top guard and (in figure, does not draw), described inspection switch 2, Room door normal open switch 3, gate normal open switch 4, be arranged in car top inspection station 1, the line connection of described safety return circuit is as follows: when elevator normally moves, 110V alternating current flows into circuit from A point, through following series connection normally closed switch, jigger wheel switch 5, security window switch 6, sedan-chair top emergency stop switch 7, safety gear switch 8, governor switch 9, limes superiors switch 10, smallest limit switch 11, water bumper switch 12, expansion tightening wheel switch 13, pit emergency stop switch 14, bottom Room door lock 17, interlayer Room door lock 18, top layer Room door lock 19, gate lock 20, finally from I point, through two pairs of open contacts (not drawing figure) of safety return circuit relay 16, flow into host control panel.

A contact of Room door normal open switch 3 is connected with the open contact C of inspection switch 2, and another contact of Room door normal open switch 3 is connected with the G point of top layer Room door lock 19; The G of gate normal open switch 4, H bis-ends are in parallel with two ends of gate lock 20.

When the Room, gate are opened upper and lower passenger, as pin Room door switch 3, gate switch 4, because the C of inspection switch 2 point does not all exchange 110V voltage with Room door switch 19 G point below, therefore it is electric that host control panel can not obtain, so elevator can not move, therefore passenger can be not dangerous.

The Room when elevator, gate lock can not cut out because of various reasons, while causing H point without interchange 110V electricity, maintainer can first rotate inspection switch 2, normally closed contact D, E disconnects, safety return circuit relay coil 16 dead electricity, elevator can not normally move, the open contact C of inspection switch 2 order electric after, maintainer can press Room door switch 3 or gate switch 4, exchange 110V electricity and will through Room door switch 3, flow to G point from C point, or flow to H point from gate switch 4, maintainer just can be upper by press simultaneously like this, descending button sees whether car moves to judge the Room of elevator, whether gate lock is obstructed.The D of inspection switch 2, E contact are normally closed contact, and D, C contact are open contact, and D is common point.

After the Room, the maintenance of gate lock, when maintainer exits sedan-chair top, inspection switch is returned to after normal condition, elevator can drop into normal operation.Certainly the Room, gate normal open switch all can be in the state of disconnection.With regard to fundamentally having solved maintainer, forget the problem of taking out the Room, the shorting stub of gate lock like this, thoroughly avoid car that passenger's accident generation occurs to shear.

Claims

1. on sedan-chair top, can distinguish the short circuit Room for one kind, the normal open switch of gate lock, comprise: car top inspection station (1), inspection switch (2), Room door normal open switch (3), gate normal open switch (4), described car top inspection station (1) is arranged on car top guard, described inspection switch (2), Room door normal open switch (3), gate normal open switch (4), be arranged in car top inspection station (1), it is characterized in that: a contact of Room door normal open switch (3) is connected with the open contact C of inspection switch (2), another contact of Room door normal open switch (3) is connected with the G point of top layer Room door lock (19), the G of gate normal open switch (4), H bis-ends are in parallel with two ends of gate lock (20).

2. a kind of normal open switch that can distinguish the short circuit Room, gate lock on sedan-chair top according to claim 1, is characterized in that: the D of described inspection switch (2), E contact are normally closed contact, and D, C contact are open contact, and D is common point.