发明名称 |
Process and device for monitoring and controlling the speed of rotation of an electric drive with frequency converter for hoisting gears |
摘要 |
A process and a device for monitoring and/or controlling the speed of rotation of an electric drive having an asynchronous motor equipped with a braking device (11) and connected via a frequency adapter (13) to an alternating current system (12), e.g. three-phase system, to provide safe lifting and lowering of a load. The maximum torque (16) produced by the drive for lifting the load is set to be smaller than a holding torque (17) needed by the braking device (11) to hold the load in a stationary position.
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申请公布号 |
US5818185(A) |
申请公布日期 |
1998.10.06 |
申请号 |
US19950547986 |
申请日期 |
1995.10.25 |
申请人 |
MANNESMANN AKTIENGESELLSCHAFT |
发明人 |
FREITAG, HOLGER;MUENZEBROCK, ANTON |
分类号 |
B66D1/12;B66C13/26;B66D1/48;B66D1/58;H02P27/04;(IPC1-7):H02P7/00 |
主分类号 |
B66D1/12 |
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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