How can an elevator stop at the floor where you want to dock? Why the general height of the error is very small, very few elevator doors open, the elevator is not the ground and the ground alignment of the situation? If the wire rope encountered thermal expansion or contraction or long harvest and make up the ancient use of the current period, will not produce the length of change? This will not make the elevator dock can not be aligned with the floor of the floor? There is no possibility of docking with the ground floor height error of tens of centimeters, people need to climb out of the situation? More
Generally not in the elevator car above the elevator deck, in each layer have a flat device, installed before the measurement positioning, and then enter the data into the main version. Upstairs said incomplete, and now the elevator has automatic Flat layer, that is, after the power outage it will be near the leveling layer.
Oh, your question is very interesting. To be honest, my unit to do the product is about this. do you know? In fact, the elevator floor positioning is not only on the rope to capture and make up the ancient cast off the rough, but also in the floor of each layer on the positioning. Also, now the general elevator electronic core board are used in the intelligent positioning system. So this problem is generally not out of the problem. Of course, do not rule out special problems, such as all blackouts and so on.
In the outer door of the elevator along a limit switch! Under normal circumstances under the control of the elevator in front of the floor will be close to the front of the deceleration! And then slowly cut into pieces and make up the old table, The bar stopped the switch, the car stopped! Basically there is no "occurred when the ground with the ground floor height error of tens of centimeters" of the situation! Because it is mechanical control, so when the power outage does not matter! People are trapped inside the elevator! And the elevator car did not reach the position before the floor will not open the door! Because there is a layer of the door lock! Must be when the top of the car on the top of the top of the roof lock, Open! This is also purely mechanical!
