The vertical adjustment feature of the subject locking mechanism insures accurate and complete alignment of the chock and rack teeth to facilitate lull engagement of the locking mechanism。
Lateral hydraulic actuation of the chock provides a first driving force which serves to securely position the chock in engagement and the chock frame is held in a fixed position for long term operation by the provision of mechanical loclt members。
Horizontal engagement of the chock is maintained by the securing wedge 92 which drives against a compati- ble surface on the chock and maintains the chocl‹ teeth in full engagement with the rack while reacting any couple created on the chock by the force of the rack teeth。
In describing the invention, reference has been made to a preferred embodiment and illustrative advantages of the invention。 Those skilled in the art, however, and familiar with the instant disclosure of the subject inven- tion, may recognize additions, deletions, modifications, substitutions and/or other changes which will fall within the purview of the subject invention and claims。
or locking member 70 is fashioned with a sloping sur- 45 What is claimed is:
face 100 designed to cooperate and engage with the wedge 92。 Upon actuation of the motor 96 the wedge cooperates with the sloping surface of the chock to lock the clnoci: into engagement with the rack and resist the
1。
A jack-up platform locking apparatus for at least partially securing a vertically adjustable leg of an off- shore platform with respect to a deck of the platform, said locking apparatus comprising:
tendency of axial forces on the leg to push the chock 70 50 frame means operable to tie securely connected to the
laterally out of engagement with the rack。 While the motor f6 is disclosed as being hydraulic it will be appre- ciated that a mechanical actuation assembly may be substitutecl by one of ordinary skill in the art。
deck of the offshore platfo r。m;
lock means having at least one tooth for engaging a compatibly configured surface on the vertically adjustable leg of the offshore platform;
in operation the platform is jacked to its desired ele- 55 means for vertically adjusting said lock means with
vatioi through the actuation of a pinion drive assem- blies engaging the rac1‹s 42。 Upon achieving the desired elevation and placement of the chord 34 in a general posture relative to the locking assemblies 50 such that horizontal loading will be directed through the horizon- tal bracing junctions of the 14 chock 70 is vertically adjusted through the provision of the hydraulic motor
$2 until the teeth 72 of the chock are in alignment with the teeth in t!ie rack '12。 The actuating motor 74 then
respect to said declt and said leg;
means for horizontally actuating or deactivating said lock means with respect to said leg for engaging and disengaging said at least one tooth with respect
6O to the compatibly configured surface on said verti- cally adjustable leg;
means for vertically securing said lock means with respect to said deck and said leg; and
means for horizontally securing said lock means with
drix’es the chock teeth 72 into firm and supporting en- 65 自升式平台锁定装置英文文献和中文翻译(6):http://www.youerw.com/fanyi/lunwen_96548.html