Hydraulic height adjustment device for installing ultra-heavy structure

An apparatus for installing a heavy-weight offshore structure to place an upper structure on a lower structure installed to a seabed, the apparatus comprising:

• a carrier;
• and
• a hydraulic height adjusting device installed to an upper portion of the carrier at plural positions to support the upper structure and adjust a height thereof,
• the hydraulic height adjusting device including
• a lower frame which is installed on a top surface of the carrier and is provided with a plurality of receiving portions formed in an upwardly opened shape;
• and
• a hydraulic cylinder which is disposed in and engaged to the respective receiving portions of the lower frame, the hydraulic cylinder being movable in a vertical direction to adjust the height of the upper structure, in a state in which an upper end thereof supports the upper structure,
• wherein the receiving portion is provided with a support guide which is interposed between an inner wall of the receiving portion and the hydraulic cylinder to annually enclose the hydraulic cylinder and thus prevent the hydraulic cylinder from being tilted
• wherein four outer sides of the support guide are respectively provided with a lateral support part to support the support guide from a lateral direction,
• wherein the lateral support part includes a support cylinder body installed to the lower frame, a support cylinder rod disposed in the support cylinder body and horizontally moving toward or away from the receiving portion to apply bearing power to the support guide, an opening/closing valve for controlling flow of operating oil into or from the support cylinder body, and a controller for controlling operation of the opening/closing valve.