Glasshouse construction

Abstract

A glasshouse construction, comprising a number of uprights which jointly support a light-transmitting roof construction and which, with the aid of girders, are connected in rows, and at least one screen construction, arranged between two successive rows. The screen construction is provided with a screen which is movable between a retracted position in which the screen is located as a package along a row of uprights and an extended position in which the screen extends substantially flat between two successive rows of uprights. At least one of the girders comprises a section having an open cross section, while in retracted position of the screen, the package formed by the screen is at least partly surrounded by the section.

1 . A glasshouse construction, comprising a number of uprights which jointly bear a light-transmitting roof construction and which, with the aid of girders, are connected in rows, and at least one screen construction, arranged between two successive rows, having a screen which is movable between a retracted position in which the screen is disposed as a package along a row of uprights and an extended position in which the screen extends substantially flat between two successive rows of uprights, characterized in that at least one of the girders comprises at least one section having an open cross section, which, at the level of the screen, is located next to one or more uprights from a row and which extends along one or more of the uprights, and whose opening faces away from the one or more uprights, such that in retracted position of the screen, the package formed by the screen is at least partly surrounded by the section.  
     
     
         2 . The glasshouse construction of  claim 1 , wherein the section having an open cross section comprises a U-section.  
     
     
         3 . The glasshouse construction of  claim 2 , wherein a back part of the section having a U-shaped cross section, which connects the legs, abuts against a side surface of at least one upright.  
     
     
         4 . The glasshouse construction of  claim 1 , wherein at least one girder comprises two sections having open cross sections, which are arranged with the open sides of their cross sections facing away from each other, on opposite sides of at least one upright from a row.  
     
     
         5 . The glasshouse construction of  claim 4 , wherein the sections having an open cross section are arranged in spaced apart relation in the vertical direction of the upright.  
     
     
         6 . The glasshouse construction of  claim 4 , wherein the sections are connected via a support construction, preferably a lattice construction.  
     
     
         7 . The glasshouse construction of  claim 6 , wherein the support construction connects a lower leg of the upper section with an upper leg of the lower section.  
     
     
         8 . The glasshouse construction of  claim 6 , wherein one or more girders are designed as a construction element which comprises two parallel extending sections having a U-shaped cross section, which are spaced apart an intermediate distance both transversely to the back parts and transversely to the legs and are connected via a lattice construction.  
     
     
         9 . The glasshouse construction of  claim 8 , wherein the construction element is provided with mounting plates which connect the sections adjacent their ends in the manner of steps of a ladder.  
     
     
         10 . The glasshouse construction of  claim 1 , wherein the screen construction is provided with at least two lead beams which are coupled by means of a coupling piece.  
     
     
         11 . The glasshouse construction of  claim 10 , wherein the lead beam is provided with an auxiliary chamber for receiving the coupling piece, which auxiliary chamber is set back relative to a front edge of the lead beam over at least the length of the cross section of an upright.  
     
     
         12 . The glasshouse construction of  claim 1 , further comprising a construction element for glasshouse construction, comprising two parallel extending sections having a U-shaped cross section, each with a back part which connects two parallel legs of the section, while the sections, with the back parts proximal to each other, are spaced apart an intermediate distance both transversely to the back parts and transversely to the legs, and the legs are connected via a lattice construction.  
     
     
         13 . The glasshouse construction of  claim 1 , further comprising a lead beam for use in the screen construction of a glasshouse construction, comprising an extruded section having a substantially L-shaped cross section and an auxiliary chamber for receiving a coupling beam which is set back relative to a front edge of the lead beam over at least the length 1 of the cross section of the upright.  
     
     
         14 . The glasshouse construction of  claim 1 , further comprising an assembly of girders and uprights, comprising a number of uprights which are arranged to bear a light-transmitting roof construction and which are connected in rows by means of girders, while at least one girder comprises two sections having open cross sections, which are arranged, with the open sides of their cross sections facing away from each other, on opposite sides of at least one upright from one row and are spaced apart in the vertical direction of the upright and are connected via a lattice construction.