Hejseværk og fremgangsmåde til anvendelse af hejseværk

摘要

A winch system and methods for operating a winch system are disclosed. A wire (126) is spooled onto a drum (122) rotatably mounted to a shaft (206). A permanent magnet is mounted to the drum (122) such that, when an electric current is applied to a coiled winding mounted to the shaft (206), the drum (122) rotates about the shaft (206). The winch (120) comprises a first braking system that controls the rotation of the drum (122) about the shaft (206) by controlling the application of the electric current to the coiled winding. The winch (120) also comprises a second braking system (210) that mechanically engages the drum (122) so as to prevent the rotation of the drum (122) about the shaft (206). The winch (120) is used in conjunction with a control system that facilitates the use of the winch (120) with lifting and supporting personnel working in elevated environments.