Gantries
Gantries
VOSTA LMG’s gantries are available in a wide range of sizes. The gantry is located near the draghead and mainly consists of a fixed gantry part, a pivoting A-frame, a hydraulic cylinder and a guide sheave for the hoisting wire. A VOSTA LMG swell compensator system should be installed to compensate the swell.
Draghead Gantries
The fixed part of the draghead gantry is a closed steel construction, welded on deck. The gantry is equipped with a swiveling sheave, which adjusts automatically to the direction of the hoisting wire and provided with proximity switches for detecting of pipe positions. The winch is remote controlled and includes a multi-turn encoder and a rope limit switch.
Intermediate Gantries
The fixed part of the intermediate gantry is a closed steel construction, welded on deck. The gantry is equipped with a swiveling sheave, which adjusts automatically to the direction of the hoisting wire and provided with proximity switches for detecting of pipe positions. The winch is remote controlled and includes a multi-turn encoder and a rope limit switch.
Trunnion Gantries
The fixed part of the trunnion gantry is a closed steel construction, welded on deck. The portal frames support a guide frame, which remains vertical during movements of the gantry and guides the sliding piece with the trunnion elbow. A service frame carries measuring cables to the sliding piece and suction pipe.
