发明授权
- 专利标题： Process and device for monitoring and controlling the speed of rotation of an electric drive with frequency converter for hoisting gears
- 专利标题（中）： 用于起动齿轮变频器监控和控制电动驱动器转速的过程和装置
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申请号： US547986申请日： 1995-10-25
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公开(公告)号： US5818185A公开(公告)日： 1998-10-06
- 发明人: Holger Freitag , Anton Munzebrock
- 申请人： Holger Freitag , Anton Munzebrock
- 申请人地址： DEX Dusseldorf
- 专利权人： Mannesmann Aktiengesellschaft
- 当前专利权人： Mannesmann Aktiengesellschaft
- 当前专利权人地址： DEX Dusseldorf
- 优先权： DEX4440420.4 19941107
- 主分类号： B66D1/12
- IPC分类号： B66D1/12 ; B66C13/26 ; B66D1/48 ; B66D1/58 ; H02P27/04 ; H02P7/00
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.
公开/授权文献
- US3979795A Decorative eyeglass holder 公开/授权日：1976-09-14
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