Articulating a-frame to save time

Posted: 12/22/2011 in all marine news

Hydro International –

To make A-frame adjusting and equipment change faster, easier and safer, MacArtney (Denmark) has designed and developed a new A-frame system.

This new system makes it possible to access the top of the A-frame from the deck of the ship.

This clever hydraulic design, using just 2 rams, articulates the A-frame a full 149° from the 20° angle for launching equipment over the side or the rear of the vessel to 11° over the deck of the vessel.

It has a high total safe working load of 89 kN throughout the entire process. Equipment, for example a full ROV launch system, can be installed on the A-frame on deck by operators working at deck level and readied for launch.

With all operators clear of the frame, the A-frame can be lifted up, past 90° and then onwards over the side or the rear of the vessel and lowered down to 20° for launch into the water.

For retrieval, the process is reversed and the A-frame raised past the 90° point and lowered to 11° over the vessel deck, which makes a 149 degree range of movement.

From here, operators can conveniently remove and replace equipment and make any necessary adjustments to the A-frame without having to be hoisted up the frame.

Lowering the A-frame to 11° from the deck also makes any service and maintenance work easier and faster to perform.

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