초록 ▼

A jack-up platform apparatus operable for effecting relative vertical motion between a leg chord of a platform and a deck of the platform. The jack-up apparatus includes at least one generally rectangular reaction member operable to be connected at one end thereof to the platform deck in a posture c

A jack-up platform apparatus operable for effecting relative vertical motion between a leg chord of a platform and a deck of the platform. The jack-up apparatus includes at least one generally rectangular reaction member operable to be connected at one end thereof to the platform deck in a posture contiguous to but spaced from a leg chord of the platform. An abutment member is connected to the other end of the reaction member and first and second leg chord engaging members are mounted for selective translation along the reaction member between the abutment member and the platform deck. A jack asembly is mounted between the first and second leg engaging members for translating the members along the reaction member wherein selective actuation of the first and second leg engaging members and the jack assembly will function to effect relative vertical motion between the platform leg chord and the platform deck while the reaction member reacts bending moments across the width thereof.

대표청구항 ▼

Jack-up apparatus operable for effecting relative vertical motion between a leg chord of an offshore platform and a deck of the platform, said jack-up apparatus comprising: reaction means operable to be connected at one end to the platform deck and operably positioned in a posture contiguous to but

Jack-up apparatus operable for effecting relative vertical motion between a leg chord of an offshore platform and a deck of the platform, said jack-up apparatus comprising: reaction means operable to be connected at one end to the platform deck and operably positioned in a posture contiguous to but spaced from the leg chord of the offshore platform; abutment means connected to the other end of said reaction means; first means for engaging with and disengaging from the leg chord of the offshore platform, said first means for engaging being mounted for sliding translation along said reaction means selectively away from and toward the deck of said offshore platform at generally said one end of said reaction means and for operably abutting against the deck portion of said offshore platform; second means for engaging with and disengaging from the leg chord of the offshore platform, said second means for engaging being mounted for sliding translation along said reaction means selectively away from and toward said abutment means at generally said other end of said reaction means and for operably abutting against said abutment means connected to the other end of said reaction means; means connected to said reaction means for maintaining the other end of said reaction means in a posture adjacent to the leg chord of the offshore platform; and hydraulic jack means comprising at least one hydraulic piston, piston rod, and cylinder jack assembly mounted between said first and second means for engaging wherein the cylinder of said jack assembly is mounted upon an upper portion of said first means for engaging the leg chord and the free end of the piston of said jack assembly is mounted upon a lower portion of said second means for engaging the leg chord and being operable for translating both of said first and second means for engaging with and disengaging from the leg chord of the offshore platform along said reaction means and between said abutment means and the deck of the offshore platform, wherein selective actuation of said first and second leg chord engaging means and said jack means will function to effect relative vertical motion between the leg chord and the deck of the offshore platform.