A method for controlling the orientation of a load suspended from a bearing wire about said bearing wire and a winch arrangement

摘要

A method of controlling the orientation of a cargo (18) suspended from a support wire (16) about the support wire (16), comprising the steps of: a. Wherein each winch includes a main winch and at least one auxiliary winch and a winch control system wherein each winch includes a winch motor and a plurality of tag lines, And the tag lines 40 and 42 are connected to each other via the support wire 16 and the cargo 18 And the control system 31 comprises tension sensor means 48 for determining the tag line tension and spool rotation sensor means 50 for determining the spool rotation, The control system (31) comprises a winch device (10) controllably connected to each winch motor (58) for controlling spool rotation, b. Placing winches (32, 34) without cargo (18) and connecting attachment means (44, 46) to cargo (18), or b. Placing the winches 32,34 in the cargo 18 and connecting the attachment means 44,46 to the ground 68 c. Rotating the winch spools 54 until a preset tag line tension is detected by the tension sensor means 48 on the two tag lines 40, 42; d. In order to determine the desired orientation of the cargo 18 suspended from the support wire 16 about the support wire 16 based on the determined tag line tension during horizontal and / or vertical movement of the cargo 18, Rotating the spool (54) at a predetermined rotational speed, e. Reducing the tag line tension by rotating the spool 54, and f. Separating the attachment means (44, 46).