What is the meaning of the upper limit of the ceiling?
To prevent the elevator out of control, in the end also put the wire, or to the top of the winding wire, or to the door that the reaction was slow, the elevator stopped in the middle of the floor, are limiter tube limit switch can be divided into upper and lower limits, Simply put on the stop switch and stop the switch. General limit and slowdown switch, limit switch installed together, from high to down in order, the upper limit - upper limit - on the strong reduction. The elevator pit and the top floor of the other group. When the elevator to run to the top of the time (from bottom to top), if the speed is very fast, will first encounter on the strong reduction, that is forced to slow down, the elevator began to slow down, and then hit the upper limit, this time the elevator should stop, Fast, it will encounter the last safety switch, the limit, this time the elevator safety circuit open, the elevator in the shock state, there will be crowded, if the speed soon soon, continue upward, this time the governor action, security Clamp the guide rails. The elevator stops.
Work protection measures.
To prevent the elevator out of control, in the end of the dryness of the dry spot duties to run the wind gradually put the wire, or to the top of the winding wire, or to the door that the reaction was slow, the elevator stopped in the middle of the floor, are the limiter tube
