Hull construction method employing hull construction units and a facility therefor

Claim 2

A hull construction facility comprising a trolly type work unit having a housing movable upon rails laid upon the bottom plating of a hull, a mast carrying a predetermined number of stagings for erecting said platings and longitudinal bulkheads of the hull; a pole type work unit in which poles each carrying a predetermined number of vertically spaced apart load arms are mounted upon a girder movable upon said rails so that the erection and welding of struts may be accomplished by using the upper surfaces of said load arms; a carriage type work unit which is movable along rails laid upon the uppermost struts erected and welded by said pole type work unit and carries a predetermined number of stagings; said stagings being adapted to support tack welding machines, welding machines and equipments for improving the working conditions possessed in each of said units.

Claim 3

A hull construction facility according to claim 1 including a trolly type work unit comprising a housing movable upon rails laid upon the inner bottom plating of a hull being constructed in the longitudinal direction thereof, a movable mast mounted at the front of said housing for providing a stage, a fixed mast which is erected at the rear center of said housing and carries a plurality of vertically spaced apart stagings which extend transversely and are retractable inwardly, and a plurality of stagings transversely mounted upon both sides of said housing, said trolly type work unit being used for erection and welding of side plates, longitudinal bulkheads and the like.

Claim 4

A hull construction facility according to claim 1 including a pole type work unit for erection and welding of struts comprising a girder movable upon said rails, two poles mounted upon said girder in transversely spaced apart relation and for transverse movement, a plurality of vertically spaced apart load arms longitudinally carried by each of said poles for vertical movement, and a plurality of movable stagings mounted upon each of said load arms.

Claim 5

A hull construction facility according to claim 1 including a carriage work unit which is longitudinally movable along rails laid upon the uppermost struts erected by said pole type work unit and carries a plurality of stagings which extend transversely and are transversely extended or retracted inwardly.

Claim 6

A hull construction facility comprising a trolly type work unit comprising a housing movable upon rails laid upon the inner bottom plating of a hull being constructed in the longitudinal direction thereof, a movable mast mounted at the front of said housing for providing a stage, a mast erected at the rear center of said housing and carrying a plurality of vertically spaced apart stagings which extend transversely and are retractable inwardly, and a plurality of stagings transversely mounted upon both sides of said housing, said trolly type work unit being usable for erection and welding of side plates, and longitudinal bulkheads; a pole type work unit for erection and welding of struts comprising a girder movable upon said rails, two poles mounted upon said girder in transversely spaced apart relation and for transverse movement, a plurality of vertically spaced apart load arms longitudinally carried by each of said poles for vertical movement, and a plurality of movable stagings mounted upon each of said load arms; a A carriage unit which is longitudinally movable along rails laid upon the uppermost struts erected by said pole type work unit and carries a plurality of stagings which extend transversely and are transversely extended or retracted inwardly; said stagings being constituted as means for supporting tack welding machines, welding machines and other equipment for improving the working conditions mounted upon each of said work units.

Claim 7

A hull construction facility comprising a trolly type work unit comprising a housing movable upon rails laid upon the inner bottom plating of a hull being constructed in the longitudinal direction thereof, a movable mast mounted at the front of said housing for providing a stage, a mast erected at the rear center of said housing and carrying a plurality of vertically spaced apart stagings which extend transversely and are retractable inwardly, and a plurality of stagings transversely mounted upon both sides of said housing, said trolly type work unit being usable for erection and welding of side plates, and longitudinal bulkheads; a pole type work unit for erection and welding of struts comprising a girder movable upon said rails, two poles mounted upon said girder in transversely spaced apart relation and for transverse movement, a plurality of vertically spaced apart load arms longitudinally carried by each of said poles for vertical movement, and a plurality of movable stagings mounted upon each of said load arms; a A carriage unit which is longitudinally movable along rails laid upon the uppermost struts erected by said pole type work unit and carries a plurality of stagings which extend transversely and are transversely extended or retracted inwardly; said stagings being constituted as means for supporting tack welding machines, welding machines and other equipment for improving the working conditions mounted upon each of said work units.