Patent ID: 6793203
Filing Date: 2004-09-21
Classification: B66D,E21B

Abstract:
Lifting gear for raising and lowering a load with flexible tension means (4) attached to the load, with a drum (5) mounted to rotate about an axis (S) for winding up the tension means (4), with a first rotary driving device (19), which incorporates a first rotary driving motor (21) acting on the drum (5) through a first change-speed gearbox (25), by which the drum (5) is driven in rotation at will in the direction for winding-up or unwinding the tension element (4), wherein the first rotary driving device (19) is mounted alongside the drum (5) in relation to the axis of rotation (S) of the drum (5) in such a way that the drum (5) and the rotary driving device (19) overlap in a projection perpendicular to the axis of rotation (S) of the drum (5), the drum (5) being secured to a rotatably mounted drum shaft (6), the drum shaft (6) being coupled at one end to a mechanically acting braking device and at the other end to an electromagnetically acting braking device, and with a second rotary driving device (20) complete with a second rotary driving motor (22) and a second change-speed gearbox (26).