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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
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。
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公开(公告)号：EP0991819A1
公开(公告)日：2000-04-12
申请号：EP98930253.4
申请日：1998-06-12
申请人： LETOURNEAU, INC.
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.
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公开(公告)号：EP0991819B1
公开(公告)日：2005-11-09
申请号：EP98930253.4
申请日：1998-06-12
申请人： LETOURNEAU, INC.
IPC分类号： 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.
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公开(公告)号：EP0495891B1
公开(公告)日：1995-02-01
申请号：EP90915911.3
申请日：1990-10-10
申请人： LeTOURNEAU, INC.
IPC分类号： G01G19/10
CPC分类号： G01G19/10
摘要： A method and an apparatus for load weight determination of the truck (10) including the steps of loading the truck, sensing the pressure of the tilting cylinders (20) to determine the amount of load, indicating the load weight, providing feedback on the effect of variations in the center of gravity of load to correct the load weight determined and providing a corrected load weight. The apparatus includes a tilting bed truck (10) with the bed (16) hinged to the truck frame (12) and tilted to its dumping position by tilting cylinders (20), a sensing device (34) for sensing the pressure in the tilting cylinders (20) when they are supporting the bed (16) above its support pad (22), a data processor (30) having data on truck loading and receiving information on the pressure sensed by the sensing device (34) and having an output to indicating devices of the load weight.
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公开(公告)号：EP0502951B1
公开(公告)日：1995-05-10
申请号：EP91900469.7
申请日：1990-11-23
申请人： LETOURNEAU, INC.
CPC分类号： B60L11/123 , B60K6/46 , B60L7/04 , B60L7/12 , B60L11/007 , B60L2210/20 , B60L2220/20 , B60L2220/44 , F02B3/06 , Y02T10/6217 , Y02T10/646 , Y02T10/7077 , Y02T10/725
摘要： An improved method and apparatus for powering and controlling the operation of large diesel-electric off-road haulers of the type in which hauler drive wheels are propelled and retarded by DC electric wheel motors powered from on-board generators, optionally supplemented by DC power, from external trolley lines. In the disclosed system, thyristor-type converters connected into the system AC power grid are used to receive supplemental external power from DC trolley lines and supply it into the AC power distribution grid in the propel mode. The use of such thyristor-type converters makes possible the use of supplemental trolley line power without provision of separate switching or control gear to operate the DC wheel motors when trolley line power is received. Thyristor-type converters also may be used to supply current generated by wheel motors in the retarding mode to retarding resistors, making possible the use of the initial electrical power generated by the wheel motors to replace load requirements of the diesel engine, resulting in substantial fuel savings.
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