4,255,069
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which compatibly receive the free end of alignment of
rods 54。
Vertical actuation of the frame 52 is achieved by at least one hydraulic motor 62 comprising a typical piston and cylinder combination wherein one end of the motor 5 is operably connected to the deck via a connecting bar
64。The other end of the motor 62 is connected to the frame such that vertical raising and lowering of the somewhat heavy locking mechanism may be facilely
and reliably achieved。 10
The frame 52 serves to carry a locking member '70 such as a chock having teeth 72 operable for engage- ment with the teeth of the rack 42。 The exact spacing and depth of the teeth are selected such that upon full
engagement of the chock as depicted in FIG。 5 the lands 15
of the chock and rack teeth do not engage with the tips of the teeth and the sloping side surfaces thereof mutu- ally interfere to provide a firm supporting connection。 Actuation of the chock toward and away from the rack 42 is achieved by a second hydraulic motor assem- bly 74 which is mounted at one end 76 upon an outer most portion of the frame 52 and at the inner end 78 upon a baci: surface of the chock 70。 As depicted in FIGS。 5 anal 6 it will be seen that actuation of the sec-
ond motor 74 serves to drive the chocl‹ 70 into firm 25
engagement with the rack 42。
The vertical position of the frame 52 is advanta- geoosly assured throughout the operating life of the lock by the provision of a plurality of mechanical secur-
ing or holding members 80, note particularly FIG。 5。 30 The securing members 80 are threaded through holding ams 82 fixedly connected to the deck。 These mechani-
cal securing or locking members C0 include an upper end portion 114 containing wrench flats or the 1il:e de- signed to cooperate with an appropriate accuating tool。 35 Upon locking of the frame 52 in vertical position with
the lock screws fiO hydraulic pressure on the motor 64 iriay be relieved as desired。
The chock 70 is horizontally secured in operative position by the provision of a securing or locking wedge assembly。 In this regard a wedge 92 having a sloping surface 94 is vertically actuated by a hydraulic motor assembly IS。 The motor f6 is connected to the frame 52 through channel irons 98。 A back portion of the chock
tained in a pressurized posture as desired。 Horizontal engagement of the chock 70 with the racl: '12 is secured by downward actuation of the wedge 92 which bears against a sloping surface of the cliock and provides a resultant horizontal force which will prevent the chock 78 from becoming disengaged from the rack 42。
SUMMARY OF MAJOR ADVANTAGES OF THE
INVENTION
After reading and understanding the foregoing de- scription of the invention, in conjunction with the drawings, it will be appreciated that several advantages of the subject jack-up platform locking apparatus are obtained。
Without attempting to set forth all of these desirable features of the instant locking assembly, at least some of the major advantages of the invention include the provi- sion of a lock which will secure the jack-up leg chords with respect to the deck through bracing junctions and will react bending moments occasioned upon the legs and deci: from environmental sources without damag- ing the leg chords。 自升式平台锁定装置英文文献和中文翻译(5):http://www.youerw.com/fanyi/lunwen_96548.html