发明名称 |
ELECTROMAGNETIC BRAKE DEVICE |
摘要 |
<p>PURPOSE:To detect unusual operation at an early stage by means of a small number of temp. sensors by providing temp. sensors around the outer periphery of a rotor in an electromagnetic brake device and by interrupting power supplies to a motor and an electromagnetic brake. CONSTITUTION:Temp. sensor 4a is mounted on a rod 8 for interconnecting a core 2 to an outer disk 5. When a shoe 3 is not completely opened due to any failure in the core 2, the poor operation of the shoe 3, or poor adjustment of gap g, a disk 4 keeps contact with the shoe 3 to generate heat at its contact part. A part of the shoe 3 may experience temp. rise. but since the disk 4 generates heat on its whole area, the resulting heat causes the temp. sensor 4a to detect temp. rise in the disk 4 so as to suspend electrification of an electromagnetic brake as well as of a motor. The above constitution can detect unusual temp. rise in the disk 4 or the shoe 3 by only providing a small number temp. sensors 4a.</p> |
申请公布号 |
JPH05196073(A) |
申请公布日期 |
1993.08.06 |
申请号 |
JP19920008592 |
申请日期 |
1992.01.21 |
申请人 |
HITACHI BUILDING SYST ENG & SERVICE CO LTD |
发明人 |
HINO HITOSHI;SHIMODERA MAKOTO |
分类号 |
B66B5/02;B66B11/08;B66B23/02;B66B29/00;B66D5/00;B66D5/30;F16D65/18;F16D66/00 |
主分类号 |
B66B5/02 |
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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