| 摘要 |
<p>There is described an apparatus for maintaining, repairing, cleaning and/or painting the sides of the ship. The apparatus is adapted to travel along one longitudinal wall of a dry dock by means of rollers which engage rails on the dry dock. A control cabin is located above the chassis and a boom is provided to carry a work platform and/or working appliances at its free end, the boom is pivotable about a vertical axis and about a horizontal axis. A water-tight container is located in the lower part of the chassis, which is under water when the dock is flooded, and servicing equipment such as an internal combustion engine or engines, a hydraulic station, a pressurized water station and/or a spray-painting station and supply tanks are provided within the container. A pair of fresh air tubes in the form of an inverted V connect the container with atmosphere above the water line of the dry dock when flooded and a central exhaust tube vents the container of exhaust gases and spent cooling air. The upper end of the exhaust tube also terminating above the water line of the dry dock when flooded.</p> |
