| 摘要 |
A load compensating device, especially one for lifting appliances, includes a detector for detecting an overload or an underload and designed to cause actuation of the compensating device. The device comprises an actuator attached to one of ends of a Grope or ropes+that support the load ( 11 ) eapableofor producing positive or negative displacement of the rope or ropes over a short distance compared with the length of the rope or ropes. The actuator is operated by brushless electric motor connected to an infinitely variable-speed transmission. The transmission is connected to the detector.
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