| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a brake of a hoisting machine for an elevator capable of maintaining the elasticity even when a shock-absorbing member including rubber provided between an electromagnetic magnet and a moving core is low at temperature. <P>SOLUTION: In order to heat a shock-absorbing member including rubber, the current in an electromagnetic coil 5 during the conduction is measured by a heating control device 60, and the estimated temperature of the electromagnetic coil 5 is calculated by calculating the resistance of the electromagnetic coil 5 from the current value. When the estimated temperature is lower than the set reference value, the current capable of heating only the shock-absorbing member 9 is allowed to run in the electromagnetic coil 5. Further, during the braking, the estimated temperature is calculated by allowing the weak current in the electromagnetic coil 5, and the shock-absorbing member 9 is heated by increasing the weak current. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
