公开(公告)号：US3778855A

公开(公告)日：1973-12-18

申请号：US3778855D

申请日：1972-12-15

申请人： WHITTAKER CORP

发明人： KARIAGIN N ,  LAIBSON J ,  HOOPER E ,  KEOGH J ,  RAGAN A

IPC分类号： B63B23/26 ,  B63B23/02

CPC分类号： B63B23/26

摘要： A davit for use in lowering and raising life crafts such as life boats and survival capsules with respect to decking upon which the davit is supported. The davit comprises a fixed hollow beam which slidably receives a travelling boom which, in turn, houses a dump-hook assembly. The latter is capable of movement along the travelling boom. A cable extends from a power source through the davit and over the dump-hook to suspend the life craft beneath the davit. The fixed beam is canted so that its outboard end extends downwardly at an angle which permits outboard-directed movement, under the influence of gravity, of the travelling boom and dump-lock assembly once the holding brake or mechanism is released. Retraction of the dump-hook assembly and travelling boom into the fixed beam is provided by the powered cable. The outboard-directed movements of the travelling boom and dumphook assembly are coordinated so that termination of such movement of the travelling boom initiates the outboard-directed movement of the dump-hook assembly. The inboard-directed movements of these components are coordinated in a similar but in reverse manner. A cut-out is provided in the top of the outboard end of the travelling boom which cooperates with certain stops to limit the outboard movement of the dump-hook assembly and to cause it to rotate about a transverse axis to permit lowering of the life craft. The davit also includes components which ensure that the dump-hook assembly is retracted before the travelling boom commences to retract into the fixed beam.

摘要翻译： 用于降低和提高救生艇和救生胶囊等生命工具的吊架，用于支撑吊架的甲板。 吊架包括固定的中空梁，该中空梁可滑动地容纳行进的吊杆，其又容纳倾卸钩组件。 后者能够沿着旅行吊杆移动。 电缆从电源通过吊架延伸，并通过倾卸钩将悬挂在吊架下方的救生艇。 固定梁是倾斜的，使得其外侧端部以一定的角度向下延伸，一旦释放保持制动器或机构，该角度允许在重力作用下行进的起重臂和倾卸锁定组件的外侧导向运动。 转向钩组件和行走吊杆向固定梁的收回由动力电缆提供。