For elevators used for wire rope elevators
1 How does the elevator work?
The elevator has a car and a counterweight, which are connected by wire ropes. The wire ropes are driven by the traction of the driving device (traction machine) so that the elevator car and the counterweight move up and down on the inner guide rails of the elevator.
For elevators used for wire rope elevators, the country has special regulations and requirements. The configuration of the wire rope is not only to bear the building elevator and the rated load but also to consider the size of the traction force. Therefore, the tensile strength of the steel wire rope is greatly greater than the load capacity of the elevator, and their safety factors are all above 12. The general elevators are With more than four wire ropes, one elevator wire rope will not break.
If an unexpected power outage or failure of the power supply line occurs during the operation of the elevator, the elevator will automatically stop running and there will be no danger. Because the elevator itself is equipped with electrical and mechanical safety devices, once the power is cut off, the actuator of the electric body will automatically brake so that the elevator cannot operate. In addition, if there is a planned power outage by the power supply department, the elevator or the elevator will be stopped in advance if it is notified in advance.
The running speed of the elevator, whether up or down, shall be operated within the specified rated speed range. Generally, it will not be over-speed. If there is Overspeed, there is an anti-Overspeed device in the elevator control system. At this time, the device will automatically operate. Decelerate or stop the elevator.