发明授权
- 专利标题： Safety device for elevator and rope slip detection method
- 专利标题（中）： 电梯和绳索滑移检测方法的安全装置
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申请号： US13440029申请日： 2012-04-05
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公开(公告)号： US08261886B2公开(公告)日： 2012-09-11
- 发明人: Hiroshi Kigawa , Naoyuki Maruyama , Eiji Ando
- 申请人： Hiroshi Kigawa , Naoyuki Maruyama , Eiji Ando
- 申请人地址： JP Tokyo
- 专利权人： Mitsubishi Electric Corporation
- 当前专利权人： Mitsubishi Electric Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 主分类号： B66B1/34
- IPC分类号： B66B1/34
摘要：
In a safety system for an elevator, slip detection means detects a slip between a drive sheave and a main rope. A safety gear is mounted to a car, the safety gear being electrically operated by an actuator to cause the car to make an emergency stop regardless of whether a running direction of the car is upward or downward. A safety gear controller cuts power supply to a hoisting machine motor and causes the safety gear to make a braking operation upon detection of the slip between the drive sheave and the main rope by the slip detection means.
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