Hunan ElevatorThe assembly and switch

1.governor

The speed limiter is used in the elevator overspeed device to limit the car or weight falling speed, and is an important part of the overspeed protection device。It can rotate under normal conditions and protect the speed limit under abnormal conditions according to the running speed of the car, and make the elevator stop moving or make the safety clamp stop the car on the guide rail through the electrical and mechanical action。

2. Safety forceps

Safety pliers YesHunan ElevatorA safety device used directly in the overspeed protection device to brake the speeding car or the weight。The safety clamp device is installed on the car frame or counterweight frame, which is composed of two parts, namely, the stopping mechanism and the operating mechanism。The stopping mechanism is called the safety clamp, and its action is to stop the car or the counterweight and clamp on the guide rail。

3. buffer

The buffer is a mechanical safety device of the elevator, which is installed in the pit。A buffer safety device used to absorb the kinetic energy of the car or counterweight when the car or counterweight is squatting or jacking。Its type is divided into two kinds of storage buffer and energy dissipation buffer。

4. Layer door lock locking device and verification door closure device

In order to prevent falling and shearing accidents, the floor door is locked by the door lock, so that people can not use the lock device outside the floor can not open the floor door。The door lock is an electromechanical interlocking device, and the opening and closing of the locking device (door lock) on the floor door is driven by the door door through the door knife。The floor door is passive, the car door is active, and the opening and closing of the floor door is inserted (clamped) by the car door door knife on the car door, so that the lock arm is unhooked and the car door moves together。

5.Safety circuit and safety switch of elevator

Safety loop function: In order to ensure the safe operation of the elevator, many safety parts are installed on the elevator。Only when each security device is in normal condition, the elevator can run, otherwise the elevator will stop running immediately。

Common safety circuit switches are:

Machine room: control panel scram switch, phase sequence relay, thermal relay, governor switch

Shaft: 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: rope break protection switch, pit inspection box emergency stop switch, buffer switch Inside the car: control box emergency stop switch

Car top: safety window switch, safety clamp switch, car top inspection box emergency stop switch

Fault status: WhenHunan ElevatorIn the stopped state, all signals can not be registered, the express local train can not run, the first suspect is the safety circuit fault。You should go to the control panel of the equipment room to observe the status of the safety relay。If the safety relay is in the release state, it should be judged that the safety circuit is faulty。