CN2197344Y

CN2197344Y - Safeguard controller for lift

Info

Publication number: CN2197344Y
Application number: CN 94213575
Authority: CN
Inventors: 温祺胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-30
Filing date: 1994-05-30
Publication date: 1995-05-17
Anticipated expiration: 2004-05-30

Abstract

The utility model relates to a safety controller for an elevator. The goal of safety control can be achieved through a safety control button 3TA1 controlling the switching on of the normally-closed contact point 3JC1 of a relay 3JC arranged on the forward rotating (lifting a basket) circuit of the electrical machine of a hoister. Only when a material feeding person on the ground presses the safety control button, the basket lifting control circuit can be switched on by an upstairs operator. Thus, the utility model can effectively guarantee the safety of the material feeding person on the ground, and has the advantages of simple structure and low cost.

Description

Safeguard controller for lift

The utility model relates to a kind of safety governor, especially a kind of building ground elevator safety governor.

During present newly-built skyscraper,, all be to adopt pulley, utilize hoisting machine folding and unfolding steel cable to realize the hanging basket lifting in order to promote the elevator of material; The control of hanging basket lifting is after installing material by ground charging personnel, to send signal, by layer personnel control upstairs; Though taked some safety measures, as ground charging personnel must send safety signal upstairs the layer operation personnel could control and start hoisting machine, but often cooperate bad with layer operation personnel upstairs as the charging personnel, the charging personnel also do not walk out elevator basket, upstairs the layer operation personnel just start hoisting machine, hanging basket is risen, cause casualties, accident takes place again and again.

The purpose of this utility model is to provide a kind of elevator safety governor, makes that hoisting machine can not start when ground charging personnel did not walk out hanging basket by safety rising button, and hanging basket can not rise, to stop the generation of accident.

The utility model is to realize above-mentioned purpose like this: in the bottom of elevator, a safety governor is installed, in descending process, touches hanging basket the travel switch of safety governor, make the hoisting machine rising control circuit of elevator disconnect, have only the ground charging personnel of working as to walk out elevator basket, when clicking the safety control button, circuit just may be switched on, and upstairs layer operation person could start hoisting machine and makes its rising; Otherwise no matter upstairs layer operation personnel control operation button how, hoisting machine can not start hanging basket and can not rise, and from then on reaches the purpose of safe in operation.

Because the utility model is that upstairs the layer operation personnel could connect hanging basket rising control circuit after wanting ground charging personnel to click the safety control button, so the utility model can effectively guarantee ground charging personnel's safety, and simple in structure, cost is low.

Below in conjunction with accompanying drawing the utility model is done concrete detailed description the in detail.

Fig. 1 is the utility model application example figure;

Fig. 2 is the utility model schematic circuit diagram.

With reference to Fig. 1, part 1 is a safety controller 1, it is installed in the bottom of elevator 12, signal lamp 4 is arranged at safety governor 1 top, and safety control button 3 is arranged at the bottom, and the travel switch 5 of safety governor 1 is installed on the elevator derrick safety governor 1, when travel switch 5 is installed, can contacting travel switch 5 when guaranteeing that hanging basket 8 descends, the electric bell 6 of safety governor 1 is installed on the derricks 12, guarantee the charging personnel and upstairs the layer operation personnel all can hear the sound that electric bell 6 sends; The 11st, upstairs the layer operation device has hanging basket 8 rising control buttons 10 and hanging basket 8 decline control buttons 9,2nd, hoisting machine motor, the 7th, material to be hoisted on it.

With reference to Fig. 2, contactless switch 1JC and decline control button 1QA(are 9 among Fig. 1) counter-rotating of forming the circuit motor 2 of control motor 2 counter-rotatings descends hanging basket 8, contactless switch 2JC and rising control button 2QA(are 10 among Fig. 1) form the circuit that control motor 2 is just changeing, the just commentaries on classics of motor 2 is risen hanging basket 8; Contactless switch 1JC, 2JC has three open contact 1JC1 and 2JC2 respectively, after they join with three phase mains respectively, be connected to electrical motor 2, contactless switch 2JC also has a normally closed contact 2JC2, relay 3JC has two open contact 3JC2 and 3JC3 that a normally closed contact 3JC1 is arranged, relay 3JC meets safety control button 3TA1, (being 3 among Fig. 1), the normally closed contact one relay termination 3JC of safety control button 3TA1, the end of the normally closed contact 2JC2 of another termination contactless switch 2JC, another termination travel switch 3TA2(of 2JC2 is 5 among Fig. 1), travel switch 3TA2(is 5 among Fig. 1) with after the open contact 3JC3 of relay 3JC is in parallel, be connected to three phase mains one phase; Open contact one termination three phase mains one phase of safety control button 3TA1, behind another termination electric bell 6, be connected to a termination three phase mains one phase of the open contact 3JC2 of zero-power line relay 3JC, the starter R that the other end and daylight lamp are used joins, the other end of starter R and signal lamp 4 join, when 3JC2 was closed, it is glittering that starter R is interrupted signal lamp 4 like this.

With reference to Fig. 1, Fig. 2, travel switch 3TA2(is 5 among Fig. 1) for normally closed, when hanging basket 8 declines touch travel switch 5, its normally closed point disconnects, relay 3JC does not have electric current to pass through, and its normally closed contact 3JC1 disconnects, open contact 3JC2 closure, at this moment as can be seen from Figure 2, signal lamp 4 is coruscated under starter R effect, and no matter upstairs how the layer operation personnel press hanging basket rising button 2QA, (being 10 among Fig. 1), because 3JC1 disconnects, contactless switch 2JC does not have electric current to pass through, and its open contact is also opened, motor 2 can not start, at this moment have only after charging personnel in ground put into hanging basket 8 to material 7 to be hoisted, walking out hanging basket and clicking safety control button 3TA1(is 3 among Fig. 1) time, the electric bell loop is connected in short-term, electric bell rings, and informs that the layer operation personnel can promote materials handling upstairs; 3JC energising simultaneously, normally closed contact 3JC1 closure gets final product starter motor 2 upstairs when the layer operation personnel press 2QA, realize promoting material; Normal battle of 3JC3, the 3JC2 of relay 3JC disconnect, and indicator lamp extinguishes.So just realized the safe in operation of elevator.

Claims

1, a kind of elevator safety governor, contactless switch 2JC by the rotating of control hoisting machine motor (2), 1JC forms, after it is characterized in that normally closed travel switch 3TA2 and the open contact 3JC3 of relay 3JC being in parallel, one termination three phase mains, one phase, the normally closed contact 2JC2 of the other end and contactless switch 2JC joins, the normally closed binding post of the other end of 2JC2 and normally closed safety control button 3TA1 joins, connect another phase of three phase mains behind another relay termination 3JC of safety control button 3TA1, the normally closed contact 3JC of relay 3JC is connected between 2QA and the 2JC, thereby realize after hanging basket (8) decline touches travel switch 3TA2, have only when the charging personnel click safety control button 3TA1, upstairs the layer operation personnel rise by just can make hanging basket (8) by hanging basket (8) rising control button 2QA.

2, a kind of elevator safety governor according to claim 1, open contact one termination three phase mains one phase that it is characterized in that safety control button 3TA1, the other end is with after electric bell (6) is connected, be connected to zero-power line, so that after underground charging personnel clicked Safe control switch 3TA1, electric bell sent the sound that can operate hanging basket (8) rising control button 2QA.