Form assembly for pouring concrete beams

Abstract

This invention relates to a form assembly for pouring a concrete beam, which form assembly comprises at least a basic element ( 1 ) with a bottom ( 3 ) and two side walls ( 4, 5 ) standing thereupon and extending in the longitudinal direction thereof, whereby the upper edges of the side walls ( 4, 5 ) of the basic element ( 1 ) are connected to each other by means of connecting means, for example, an upper wall ( 6 ) with openings ( 7 ). On one or both extremities of said basic element ( 1 ), an end piece ( 2 ) or a connecting piece can be slid and fixed thereupon.

1 .- Form assembly for pouring a concrete beam, for example, a lintel or another horizontal support element made of concrete, which form assembly at least comprises a basic element ( 1 ) with a bottom ( 3 ) and at least two side walls ( 4 , 5 ) standing thereupon and extending in the longitudinal direction thereof, characterized in that at least the upper edges of the side walls ( 4 , 5 ) of the basic element ( 1 ) are connected to each other by means of connecting means.  
     
     
         2 .- Form assembly according to  claim 1 , characterized in that the connecting means comprise an upper wall ( 6 ) which is fixed to the two side walls ( 4  and  5 ) and connects the upper edges thereof to each other and which is provided with a number of openings ( 7 ).  
     
     
         3 .- Form assembly according to  claim 2 , characterized in that the bottom ( 3 ) and the side walls ( 4 , 5 ) of the basic element ( 1 ) are formed in one piece.  
     
     
         4 .- Form assembly according to  claim 1 , characterized in that the bottom ( 3 ) and the side walls ( 4 , 5 ) of the basic element ( 1 ) are connected to each other in a detachable manner and that the connecting means comprise a number of bows ( 33 ) which cooperate with collars ( 8 , 10 ) at the upper edge, lower edge, respectively, of the side walls ( 4 , 5 ).  
     
     
         5 .- Form assembly according to  claim 4 , characterized in that the extremities of the bows ( 33 ) are bent in hook-shape and engage behind an edge ( 9 , 11 ) of the collar ( 8 , 10 ).  
     
     
         6 .- Form assembly according to any of the preceding claims, characterized in that coupling means for coupling auxiliary parts such as end pieces ( 2 ), bows ( 33 ) or connecting pieces ( 36 ) to the basic element ( 1 ) are provided at the exterior side of the side walls ( 4 , 5 ).  
     
     
         7 .- Form assembly according to  claim 6 , characterized in that these coupling means are guides allowing for a coupling by sliding.  
     
     
         8 .- Form assembly according to  claim 7 , characterized in that these guides are collars ( 8 , 10 , 12 ), whereby thus each side wall ( 4 , 5 ) comprises at least one collar ( 8 , 10 , 12 ) which preferably extends over the entire length.  
     
     
         9 .- Form assembly according to any of the preceding claims, characterized in that it comprises at least one end piece ( 2 ) which can be slid over an extremity of the basic element ( 1 ), and means to connect it to a basic element ( 1 ).  
     
     
         10 .- Form assembly according to  claim 9 , characterized in that the means for connecting an end piece ( 2 ) to the basic element ( 1 ) comprise locking means for locking the end piece ( 2 ) and preventing a displacement thereof.  
     
     
         11 .- Form assembly according to any of the  claims 6  to  8  and according to  claim 9  or  10 , characterized in that the means for connecting an end piece ( 2 ) to the basic element ( 1 ) partially consist of said coupling means on side walls ( 4 , 5 ), and complementary coupling means cooperating therewith on the end piece ( 2 ).  
     
     
         12 .- Form assembly according to claims  8  and  10 , characterized in that the end piece ( 2 ) comprises an end wall ( 22 ) and two side walls ( 20 , 21 ) connected thereto, which side walls are provided with channels ( 25 , 26 ) which are slid over the collars ( 8 , 12 ) on the side walls ( 4 , 5 ).  
     
     
         13 .- Form assembly according to  claim 12 , characterized in that the channels ( 25 , 26 ) of the end piece ( 2 ) and the collars ( 8 , 10 ) cooperating therewith of the basic element ( 1 ) are formed such that they engage into each other.  
     
     
         14 .- Form assembly according to  claim 5  and  claim 12  or  13 , characterized in that one pair of these collars ( 8 , 12 ) over which channels ( 25 , 26 ) of the end piece ( 2 ) have been slid, are the collars ( 8 ) along the upper edges of the side walls ( 4 , 5 ) with which the bows ( 33 ) connecting the upper edges of the side walls ( 4 , 5 ) to each other are cooperating.  
     
     
         15 .- Form assembly according to any of the  claims 10  to  14 , characterized in that the locking means comprise a row of recesses ( 27 ) at least on each of the side walls ( 4 , 5 ) of the basic element ( 1 ), and in the end piece ( 2 ) springy tongues ( 28 ) with a thickening ( 29 ), said tongues cooperating with said recesses in a pawl-like fashion.  
     
     
         16 .- Form assembly according to  claim 10 , characterized in that the locking means comprise at least one screw which is screwed through at least one side wall ( 20 , 21 ) of the end piece ( 2 ) and pushes against a side wall ( 4 , 5 ) of the basic element.  
     
     
         17 .- Form assembly according to any of the preceding claims, characterized in that the basic element ( 1 ) comprises a row of cavities ( 15 ) in both side walls ( 4 , 5 ) in longitudinal direction, at the height of which cavities it is possible to perforate the side walls ( 4 , 5 ).  
     
     
         18 .- Form assembly according to  claim 17 , characterized in that it comprises at least one pin ( 16 ) which is passed through two opposed cavities ( 15 ) and in between the two side walls ( 4 , 5 ) possibly is surrounded by a sleeve ( 17 ).  
     
     
         19 .- Form assembly according to any of the preceding claims, characterized in that it comprises, apart from at least one straight-lined basic element ( 1 ), at least a second basic element ( 1 ) or a constructively similar form element ( 35 ) of another shape, for example, a form element ( 35 ) with an L-shape, a T-shape or cross-shape, which is connected to the first-mentioned basic element ( 1 ) by means of a connecting piece ( 36 ).  
     
     
         20 .- Form assembly according to any of the  claims 6  to  8  and  19 , characterized in that the connecting piece ( 36 ) comprises an upper wall ( 38 ), possibly provided with an opening ( 39 ) and two lateral walls ( 40 , 41 ), whereby these side walls ( 40 , 41 ) are connected to the side walls ( 4 , 5 ) of a basic element ( 1 ) and a second basic element ( 1 ) or a form element ( 35 ) of another shape by means of coupling means.  
     
     
         21 .- Form assembly according to  claim 20 , characterized in that it comprises locking means for locking the connecting piece ( 36 ) at the basic element ( 1 ) as well as at the other element, whereby these locking means are formed, for example, like the locking means of an end piece ( 2 ), as defined in  claim 15  or  16 .