| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an elevator capable of always monitoring a state of a main rope, and capable of immediately stopping the elevator when strand breakage occurs.SOLUTION: An elevating machine, for example, an elevator, includes: a plurality of tension adjustment devices having a cage 2, a balancing weight 3, a main rope 4 for lifting/lowering these cage 2 and the balancing weight 3, a wedge 5, a socket 6, a rod 7 and a connection pin 8 and the like, and adjusting the tension of the main rope 4; and an elevator control device 12 for performing operation control of the cage 2. The elevation machine also includes tension measuring devices 1A and 1B permanently installed and held at all the plurality of tension adjustment devices and measuring the tension of the main rope 4. The elevator control device 12 has a tension determination unit for determining whether or not tension 14 and 15 suddenly changed due to strand breakage, on the basis of the tension 14, 15 of the main rope 4 measured by the tension measuring devices 1A, 1B.</p> |
