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公开(公告)号:US4576517A
公开(公告)日:1986-03-18
申请号:US663055
申请日:1984-10-19
申请人: James McCann , James Langley , Ian Hopper , Steven Durham , Thomas Scott , Eric R. McOmish
发明人: James McCann , James Langley , Ian Hopper , Steven Durham , Thomas Scott , Eric R. McOmish
摘要: A marine heave compensating device comprises a hydraulic piston and cylinder unit (15,16) with its cylinder (15) secured to a support (10,11). The piston is connected via a piston rod (16) to a cross-head (17) on which a first set of pulleys (18) are rotatably mounted. Chains (19) secured at one end to the support (10,11) are entrained around pulleys (18) and support a yoke (20) on which is mounted a crown block (21). A cable (22) is reeved around crown block (21) and around a travelling block (23) which carries a tool carrier (24). The two ends of cable (22) are reeved around two second pulleys (26A,26B) rotatably mounted on the cross-head (17). End (22A) of cable (22) is connected to a draw-works and end (22B) of cable (22) is connected to a tie-down.
摘要翻译: 海洋沉降补偿装置包括液压活塞和气缸单元(15,16),其气缸(15)固定到支撑件(10,11)上。 活塞通过活塞杆(16)连接到十字头(17)上,第一组滑轮(18)可旋转地安装在该十字头上。 在一端固定到支撑件(10,11)上的链条(19)被夹带在滑轮(18)周围并且支撑安装有冠块(21)的轭(20)。 电缆(22)围绕冠块(21)围绕运送工具架(24)的行进块(23)周围。 电缆(22)的两端围绕可旋转地安装在十字头(17)上的两个第二滑轮(26A,26B)。 电缆(22)的端部(22A)连接到牵引装置,电缆(22)的端部(22B)连接到固定装置。