| 摘要 |
A winch apparatus 30 is used for deploying or taking in line, such as wireline, over a pulley 20 spaced from the apparatus. The apparatus 30 includes a winch drum 34 mounted on a frame 30 via a swivel 38, the orientation of the drum 34 on the frame 32 being controlled by a pair of hydraulically actuated arms 40, 41, which engage with the respective ends of the drum 34. A sensor, including a pair of fingers 46, 47, is linked to an actuator for the drum arms 40, 41. The fingers 46, 47 detect changes in the fleet angle A of the drum 34 relative to the wireline and as the wireline comes into contact with the fingers this actuates the arms 40, 41 to pivot the drum 34 in the appropriate direction to bring the fleet angle within a preferred range. <IMAGE> |
