公开(公告)号：EP0991819A4

公开(公告)日：2004-03-31

申请号：EP98930253

申请日：1998-06-12

申请人： LETOURNEAU INC

发明人： DARWICHE MAHMOUD K M ,  DOWDY MICHAEL J ,  BOWES JULIAN F

IPC分类号： B66F7/12 ,  B66F17/00 ,  E02B17/08

CPC分类号： E02B17/0818 ,  E02B17/06

摘要： A locking mechanism (28) is disclosed for use on the legs (14) of a jack-up offshore platform (10). Each chord (18) of the legs (14) includes a rack (22) cooperating with pinions (26) used in raising and lowering the legs. The locking mechanism (28) includes a rigid frame attached to the hull (12) of the platform (10) and housing (36) and a plurality of vertically aligned toothed chock segments (30, 32, 38) to engage the teeth (24) of the rack (22) on a leg (14). The chock segments have upper and lower inclined surfaces cooperating with upper and lower movable wedges (48, 52) for supporting the chock segments (30, 32, 38). Subsequent engagement and retention of the supporting wedges (48, 52) securely locks the chock segments (30, 32, 38) into mating engagement with the rack teeth (24), to thereby lock the platform legs (14) in place.

摘要翻译： 公开了一种用于自升式海上平台的腿上的锁定机构。 腿的每个和弦都包括一个与用于升高和降低腿部的小齿轮配合的支架。 本发明的锁定机构包括连接到平台的船体的刚性框架，并且容纳多个垂直对齐的齿形节段段，其适于与支架上的齿条啮合。 轴承座具有上和下倾斜表面，其与用于支撑轴承座段的上部和下部可移动楔配合。 该设计使得轴承座段足够可调，用于独立对准和接合每个轴承座部分的齿与机架的相应齿。 齿轮间距的尺寸变化由制造公差产生，从而被容纳并且齿条齿和轴承座齿之间的力集中被最小化。 随后的支撑楔的接合和保持将楔块段牢固地锁定成与齿条齿配合接合，从而将平台支脚锁定就位。