What are the specific elevator safety circuits, I only know approximately

In order to ensure the safe operation of the elevator, many safety components are installed on the elevator. The elevator can only operate if every safety component is in normal condition, otherwise the elevator will stop running immediately.

The so-called safety loop is that each safety component of the elevator is equipped with a safety switch, and all the safety switches are connected in series to control a safety relay. Only when all safety switches are turned on and the safety relay is engaged, can the elevator be energized. Common safety loop switches are:

Machine room: control screen emergency stop switch, phase sequence relay, thermal relay, speed limiter switch.

Hoistway: upper limit switch, lower limit switch (some elevators put these two switches in the safety loop, and some use these two switches to directly control the power supply).

Pit: broken rope protection switch, pit maintenance box emergency stop switch, buffer switch.

In the car: control box emergency stop switch.

Car roof: safety window switch, safety gear switch, car roof maintenance box emergency stop switch Fault status:

When the elevator is in a stopped state, all signals cannot be registered, and the fast and slow trains cannot run, and the first suspicion is that the safety loop is faulty. You should go to the control panel of the computer room to observe the status of the safety relay. If the safety relay is in the released state, it should be judged as a safety loop fault.

Possible causes of failure:

The phase sequence relay operation is caused by the wrong phase sequence of the input power supply or the lack of phase.

The elevator is running under overload or stalled for a long time, causing the thermal relay to act.

It is possible that the governor is overspeeding and the governor is switching on and off.

The elevator rushes to the top or sinks to the bottom, causing the limit switch action.

Pit broken rope switch action. It could be a speed limiter rope jumping out or extra-long.

Safety gear action. The cause should be identified. It may be the speed limiter overspeeding, the speed limiter oil loss misoperation, the pit rope wheel oil loss, the pit rope wheel has foreign objects (such as rats, etc.) involved, the safety deed block gap is too small, etc.

The safety window is lifted by someone, causing the safety window to open and close.

There may be an emergency stop switch that has been pressed by someone.

If each switch is normal, check whether its contacts are in good contact, whether the wiring is loose, etc.

In addition, at present, although the safety circuit of many elevators is normal, and the safety relay is also engaged, it is usually taken on the safety relay.

The elevator safety circuit includes phase sequence relay, control cabinet emergency stop switch, speed limiter switch, broken rope switch, disc wheel switch, car top emergency stop switch, safety window switch, and safety gear.

Switches, pit emergency stop switches, limit switches, buffers.

Switches, tensioner switches, hall door lock switches, car door lock switches, etc.

I believe that everyone will be familiar with the elevator, but everyone has heard that if it is not operated correctly, it will bring some harm, so it is better to understand it in advance before operation. Let's introduce to you what are the elevator safety circuits.

There are three safety circuits of machine room, hoistway pit and car, and in order to make the elevator run safely, each circuit is equipped with at least one switch control; For example, the car has safety gear, car top emergency stop, safety window, the pit of the shaft has limits, emergency stop, buffer these categories, and the machine room is divided into speed limiter, emergency stop, etc.

What are the safety precautions for elevator use?

1. The elevator can not be overloaded, when there is an alarm, you must take the initiative to exit, wait for the next trip and then sit, you must know that if the elevator is overloaded, it is very dangerous.

2. You can't resist the elevator door, when the door is about to close, you must not force you to rush in, and you can't put one foot in the elevator and the other outside, which is also very harmful.

3. Don't press the emergency button casually, this is set to deal with unexpected situations, and you must not press it during normal operation, otherwise it will bring trouble.

4. When taking the elevator, when the door is not closed and it starts to run, in this case, it means that it is a fault, do not take it, and tell the maintenance personnel.

5. When a fire occurs, the elevator should be parked on the floor where the fireworks have not spread, and the elevator should not be used to escape, but should escape from the safety exit.

6. When there is a failure, you must not panic at this time, you should press the walkie-talkie to notify the maintenance personnel to repair, do not press randomly, and waiting is a wise choice.

7. After the elevator stops, it is necessary to observe whether the elevator car floor and the floor are horizontal, if it is not usual, in this case, it means that there is a fault, and the maintenance personnel must be called to overhaul to ensure the safety of passengers.

Summary: What are the relevant contents of the elevator safety circuit, which are the machine room, the hoistway pit, and the car. If you want to know more about related knowledge, you can consult Qijia.com.

Fourteen switches.

The elevator safety circuit is divided into the safety circuit of the machine room, the safety circuit of the car, and the safety circuit of the hoistway to make the front laughing pit. The machine room has a turning switch, a speed limiter switch, and an emergency stop switch for the control cabinet. The car has a car top emergency stop switch, a safety gear switch, a safety window switch, and a car emergency stop switch.

There are limit switches, buffer switches, broken rope switches, and pit emergency stop switches.

Summary. Safety loop switch: A motor overheating protection switch, B upper limit switch, C lower limit switch, D machine room emergency stop switch, E car top emergency stop switch, F pit emergency stop switch, G car, counterweight buffer reset protection switch, H speed limiter overspeed, broken rope protection switch.

Hello, I have seen your question and am sorting out the answer, please wait a while How many switches are there in the safety loop on the elevator.

Safety loop switch: Peiyuchen A electric distribution Zen motor overheat protection switch, B upper limit switch, C lower limit switch, D machine room emergency stop switch, E car top emergency stop switch, F pit emergency stop switch, G car, counterweight buffer reset protection switch, H limit virtual land speed device overspeed, broken rope protection switch.

There are several types of safety circuits for elevators:

In the machine room: emergency stop of the control cabinet, emergency stop next to the main engine, speed limiter switch, rope clamp switch, phase sequence relay, disc parking switch.

In the hoistway: upper and lower limit switches, emergency stop on the bottom door opening side, emergency stop at the bottom pit, buffer switch, broken rope switch in the car: car emergency stop, car top emergency stop, safety window switch, safety gear switch, car top near the door opening emergency stop.

There is also a car fixture switch in the machine room.

I wouldn't have found it somewhere else, thanks for the original.