LIFTING TRACKER AND ITS USE, EXHAUST LEAVE, EXHAUST LEAF UNIT, LOWER METHOD AND METHOD FOR REMOVING A PORTABLE TANK

摘要

it is a deck lift tractor (dht) for an unmanned platform (1) comprising an elongated base frame structure (12) carrying respective track drives (18) on each side which enable the tractor (2) move back and forth, characterized in that the tractor (2) comprises, additionally a tower frame structure (10) extending in substantially vertical direction from an end section of the base frame structure (12), whose tower frame (10) carries a cantilever top frame (11) carrying a lifting device (22, 21), wherein said caterpillar drives (18) are located at the same end section as said top frame structure (11), said base frame structure (12) being extended by respective cantilever beams (12a) separated with an opening therebetween, wherein each cantilever beam (12) has an adjustable support structure (19) adjacent its distal end (12b) from the caterpillar drive (18), said cantilever top frame structure (11) being extended to correspond vertically to said respective cantilever beams (12a), and said lifting device (20, 21) is arranged to be moved forward and backward, in addition to laterally on said top frame structure for positioning a sustained load on the lifting apparatus. The invention also relates to a temporarily installed exhaust fan (54) and a method for installing and removing a portable tank (70) in the platform (1).