| 摘要 |
The invention relates to a double drum traction winch (1) of which the rotatable drums (3,4) are both provided with adjustable grooves (7,8). Each drum comprises multiple, for example three or more, curved segments (11), each segment defining a section of a circumferential groove, such that multiple circumferential grooves on the outer surface of the drum are each composed of several curved segments. The curved segments are each movably supported by a core body (10) for movement in a substantial radial direction relative to the rotational axis of the drum. An actuator mechanism for the curved segments is provided, that comprises actuators (12) that cause essentially radial displacement of the curved segments, such that the circumference of the grooves can be adjusted. |
| 主权项 |
1. Double drum traction winch comprising a frame supporting a first and second rotatable drum such that a wire can be wound about the two drums, further comprising one or more drives for rotating both drums about their respective rotational axis, wherein the outer surface of each drum is provided with parallel circumferential grooves perpendicular to the rotational axis of the drum for carrying the wire that is wound about both drums, and wherein in use the tension in the wire carried by the grooves increases with each groove it passes through from a low tension end of a drum, where tension in the carried wire is low, towards a high tension end of a drum, were the tension in the carried wire is high, wherein, the rotatable drums are both drums with adjustable grooves, each drum comprising:
a core body, mounted in the frame for rotation about the rotational axis of the drum by said one or more drives; multiple, for example three or more, curved segments, each segment defining a section of a circumferential groove, such that multiple circumferential grooves are each composed of several curved segments, which curved segments are each movably supported on the core body for movement in a substantial radial direction relative to the rotational axis of the drum, an actuator mechanism for the curved segments, comprising actuators that cause essentially radial displacement of the curved segments, and that: a) allow to move curved segments into an outward position to increase the circumference of the grooves, and b) allow to move curved segments into an inward position to reduce the circumference of the grooves, and wherein the actuator mechanism allows the curved segments to be positioned such that the circumference of a groove at the low tension end of the drum is smaller than the circumference of a groove at the high tension end of the drum. |
