| 摘要 |
<p>For securing a heavy wire rope (hawser), usually to the bow or stern of a large vessel but alternatively to an oil rig or jetty, a bollard comprises (a) a base (B) securable to a deck and having an upstanding cylinder (10) around which is an angled skirt (12) or a plurality of angled brackets (15); (b) an upper portion having a cylinder (24) which fits rotatably within the base, and on top of which is a round plate (22) on which is fixed a fin (20), usually a pear-shaped base and the upper portion of which extends at an acute angle to the horizontal and terminates in a narrow peak under which is a notch (23) for retaining the rope, and (c) for retaining the two portions in a desired non-rotating position, corresponding lateral holes (30,32) in the respective cylinders (10,24) and at least one locking bar which can be inserted through both cylinders. The upper portion can be rotated manually by inserting a bar in a hole (26) beneath the peak of the fin; or by means of a small motor. The two sections may have respective screw threads (16,18). The bollard allows a heavy rope to be secured or released by one man. <IMAGE></p> |
