公开(公告)号：US4399764A

公开(公告)日：1983-08-23

申请号：US280607

申请日：1981-07-06

Applicant: D. Darrell Menz

Inventor： D. Darrell Menz

IPC: B63B59/02 ,  B63B59/00

CPC classification number: B63B59/02

Abstract: Passive apparatus for absorbing the kinetic energy of a collision to prot an underwater structure from damage in a collision which includes a ring suspended by a ring support system so that the ring is positioned between the structure and the expected path of potentially impacting objects. The ring support system includes eight rigid rods which have one end coupled to one of four symmetrically disposed supporting pylons by spherical sleeve bushings and their other end coupled by spherical rod ends to one of four standoff members that are fixed to the top surface of the ring at equal intervals around its circumference. A shock absorber is coupled between each supporting pylon and the ring midway between standoff members by spherical rod ends. The dimensions of the rigid rods and their attachment points to the supporting pylon and the ring are chosen so that the ring may pivot on the rods against the resistance of the shock absorbers in response to an impact, but cannot strike the enclosed object. The preferred embodiment employs a shock absorber in which forces are dissipated when two concentric cylinders are compressively displaced to force sea water from an interior chamber formed by the cylinders. As the cylinders are forced together, the sea water is forced out of the chamber through tapered slots in the outside surface of the inner cylinder. As the cylinders are forced together, the size of the orifices provided by the tapered slots is continuously reduced so that progressively greater force is required to eject the sea water from the chamber.

Abstract translation: 用于吸收碰撞的动能的被动装置，以保护水下结构免受碰撞中的损坏，包括由环支撑系统悬挂的环，使得环位于结构和潜在的撞击物体的预期路径之间。 环支撑系统包括八个刚性杆，其一端通过球形套筒衬套联接到四个对称布置的支撑架中的一个，并且其另一端通过球形杆端连接到固定到环的顶表面的四个支撑构件之一 围绕其圆周等间隔。 减震器通过球形杆端部联接在每个支撑塔和支架之间的中间环之间。 选择刚性杆及其与支撑塔和环的连接点的尺寸，使得环可以响应于冲击而抵抗抗震器的阻力在杆上枢转，但是不能撞击封闭物体。 优选的实施例采用减震器，其中当两个同心圆柱体被压缩位移以迫使来自由气缸形成的内部室的海水时，力被消散。 当气缸被压在一起时，海水通过内筒外表面上的锥形槽被迫离开室。 当气缸被压在一起时，由锥形槽提供的孔的尺寸被连续地减小，从而需要逐渐增大的力来从室喷出海水。