Hoisting gear
AssigneeWirth Maschinen-und Bohrgeratefabrik GmbH
InventorsPeter Heinrichs, Albrecht Heinrichs
Life of this patent
Estimating the term…
Abstract
The lifting gear includes a rotatably mounted drum (5) for winding up tension means (4), which is driven in rotation by at least one rotary driving device (19) comprising a rotary driving motor (21) acting on the drum (5) through at least one change-speed gearbox (25). The at least one rotary driving device (19) is—in relation to the axis of rotation (S) of the drum (5)—arranged alongside the drum (5) in such a way that the drum (5) and the rotary driving device (19) at least partially overlap in a projection perpendicular to the axis of rotation (S) of the drum (5).
Claims9
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).
Dependencies are inferred from the claim text.