发明名称 |
MAGNETIC BRAKE SYSTEM AND ELEVATOR TROUBLE DETECTION SYSTEM |
摘要 |
To accurately detect a trouble of a magnetic brake (2) by eliminating any effect of a temperature of a location at which an elevator is installed, a temperature sensor (3) is arranged to measure a temperature of the magnetic brake (2). When an armature (2c) has been attracted responsive to a brake release command, the temperature of the magnetic brake is measured as a first temperature, and before the armature returns responsive to a brake actuation command, the temperature of the magnetic brake is measured as a second temperature. The first and second temperatures are compared with each other. When a result of the comparison between the first and second temperatures is determined to be greater than a predetermined value, the magnetic brake (2) is determined to have been locked and hence, to have developed a trouble. |
申请公布号 |
SG111096(A1) |
申请公布日期 |
2005.05.30 |
申请号 |
SG20020007490 |
申请日期 |
2002.12.10 |
申请人 |
HITACHI BUILDING SYSTEMS CO., LTD. |
发明人 |
YASUSHI WATANABE;HIROSHI KIYOSUGI;MIKIO NAKAI;YUKI ISHIDA;TOSHIAKI MATSUO;TAKASHI SEKIYA |
分类号 |
B66B5/16;B60T13/66;B66B5/00;F16D66/00;(IPC1-7):F16D66/00;B66B5/02 |
主分类号 |
B66B5/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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