Formwork Column

Abstract

Formwork column ( 1 ) comprising two flexible, thin-plate elements ( 2, 3 ) of mainly cylindrical shape and arranged mutually telescopically extendable with an outer element ( 2 ) and an inner element ( 3 ). Both thin-plate elements ( 2, 3 ) are provided with longitudinal, extending flanges ( 4, 5 ) provided with holes ( 6, 7 ) in a row in the longitudinal direction of the flanges, for closing of the formwork column ( 1 ) by means of locking plugs ( 8 ), while insertion of locking plugs ( 8 ) in adjacent holes ( 6, 7 ) also arrests the formwork length. The locking plugs ( 8 ) are tightened preferably by means of wedge shaped tightening members not requiring use of tools therefore.

1 - 10 . (canceled) 
     
     
         11 . A formwork column ( 1 ) comprising at least two flexible, thin-plate elements ( 2 ,  3 ) of mainly cylindrical shape, arranged mutually telescopically extendable with an outer element ( 2 ) and an inner element ( 3 ), wherein each of the outer element ( 2 ) and inner element ( 2 ) is provided with a longitudinal extending flange ( 4 ,  5 ) provided with holes ( 6 ,  7 ) arranged in a row in the longitudinal direction for closing of the formwork column ( 1 ) by means of locking plugs ( 8 ), while insertion of locking plug ( 8 ) in adjacent holes ( 6 ,  7 ) of both thin-plate elements ( 2 ,  3 ) also arrests the formwork length. 
     
     
         12 . The formwork column of claim  1 , wherein the outer element flanges ( 4 ) are arranged to be covered by reinforcing rails ( 9 ) with holes corresponding to the holes of the flanges ( 4 ,  5 ) of the inner element and outer element before the formwork is closed by locking plugs ( 8 ). 
     
     
         13 . The formwork column of claim  1 , wherein the locking plugs ( 8 ) are arranged to be tightened by wedge-shaped tightening members ( 10 ). 
     
     
         14 . The formwork column of claim  1 , wherein at least one of the inner element ( 2 ) and outer element ( 3 ) holes ( 6 ,  7 ) is oblong in the longitudinal direction, thereby allowing a stepless fine-tuning of the length of the formwork ( 1 ). 
     
     
         15 . The formwork column of claim  1 , configured for use in manufacturing of square columns, comprising inner square thin-plate profiles ( 52 ) adapted to be supported by the thin-plate elements ( 2 ,  3 ) at their corners and having flanges which correspond substantially to the longitudinal flanges ( 4 ,  5 ) of the thin-plate profiles ( 2 ,  3 ) for closing of the square profiles by means of same locking plugs ( 8 ) which close the thin-plate profiles ( 2 ,  3 ). 
     
     
         16 . The formwork column of  claim 15 , wherein the square profiles ( 52 ) are externally supported by oblique support profiles ( 54 ) extending from the thin-plate profiles inside the cylindrical profile in an area between corners of the square profile ( 52 ). 
     
     
         17 . The formwork column of  claim 16 , wherein the square profiles ( 52 ) are supported by longitudinal and lightweight bodies ( 64 ) arranged inside the cylindrical profile, in an area between corners of the square profile ( 52 ). 
     
     
         18 . The formwork column of claim  1 , wherein the locking plugs ( 8 ) have the form of a cassette lock. 
     
     
         19 . The formwork column of claim  1 , wherein the thin-plates are made of steel and have a thickness of 1.0 mm or less. 
     
     
         20 . The formwork column of claim  1 , wherein an expansion profile ( 41 ) is positioned in an area along the longitudinal flanges ( 4 ,  5 ) at the inside of the thin-plate profiles ( 2 ,  3 ), allowing fine-tuning of the diameter of the profile cross-section. 
     
     
         21 . The formwork column of claim  1 , wherein the thin-plates are made of steel with a thickness of approximately 0.9 mm.