Support system for roof formworks

Abstract

A support system for roof formworks object of this invention with elements for providing greater stability to the system while facilitating the assembly and disassembly thereof, having a purlin with an anchoring system to a purlin holder, a purlin holder with an anchoring system to a head, a head with a seat for purlins, a head with an overlapping accessory for purlin holders and a distance fixer for purlins.

1 . a purlin for a support systems for roof formworks, defined by a profile, the purlin comprising:
 a flat lower surface supportable on the upper surface of one or more purlin holders longitudinally slotted on said upper surface,   wherein at least one end of the profile comprises a terminal having a descending extension configured as a bearing point in the slot of said slotted purlin holders.   
     
     
         2 . The purlin according to  claim 1 , wherein the external edge of the extension forms an angle less than 90°, being defined as the bearing point in the slot, while the extension has a sufficient length to be able to remove the purlin from the slotted purlin holder by pivoting it downwards with respect to said external edge without the purlin raising the supported formwork. 
     
     
         3 . The purlin according to  claim 2 , wherein the length of the extension is such that, in the resting condition in said slot, the lower surface of the profile is at the same level as the upper surface of the purlin holder, while the terminal has a base defined by an inner corner adjacent to the profile and an outer corner longitudinally opposite from the previous one, the descending extension being in the outer corner, the base comprising at the same time a groove in the lower face thereof, transverse to the longitudinal direction of the profile and located between the inner corner and the outer corner, the depth and width dimensions of which enable there to be the necessary space in order to remove the purlin from the purlin holder by pivoting it downwards with respect to said outer edge without the purlin raising the supported formwork. 
     
     
         4 . The purlin according to  claim 1 , wherein the upper corner of the outer face of the terminal is rounded. 
     
     
         5 . A slotted purlin holder for support systems for roof formworks, defined by a profile, the slotted purlin comprising:
 a flat upper surface,   wherein it comprises at least one slot in the longitudinal direction in the upper surface, suitable for receiving the descending extension of a purlin.   
     
     
         6 . The slotted purlin holder according to  claim 5 , wherein it comprises two longitudinal slots in the entirety of the upper surface, symmetrical to each other with respect to a longitudinal vertical middle plane, suitable to enable the reception of two purlins aligned with each other, one on each side of the slotted purlin holder. 
     
     
         7 . The slotted purlin holder according to  claim 5 , wherein it comprises at least one terminal with an upper extension projected in the shape of a hook, configured in its condition of use to rest in the slot of a slotted purlin holder, both slotted purlin holders being in a transverse position therebetween and with the upper surfaces having the same height. 
     
     
         8 . A head for posts of support systems for roof formworks, of the type comprising support elements for purlin holders, the head comprising:
 at least one supporting seat for the terminals for the purlins, the at least one supporting seat consisting of a slotted surface or with a stop flange, and positioned at a height with respect to the support elements for purlin holders, such that in its condition of use the seat provides continuity, as a bearing point of said terminals, for the slots of the slotted purlin holder.   
     
     
         9 . The head according to  claim 8 ,
 wherein the posts of support systems for roof formworks, comprising a horizontal support surface for purlin holders which extends from the two opposite sides of the head,   wherein it comprises two cylindrical crossbeams, parallel to each other, in a horizontal position, symmetrical with respect to a vertical middle plane of the head and fastened to said horizontal surface above the ends thereof.   
     
     
         10 . The head according to  claim 9 , wherein it comprises a column collinear to the post and a mechanism for lowering the crossbeams and the horizontal surface through said column. 
     
     
         11 . The head according to  claim 10 , further comprising
 at least one supporting seat for the terminals for the purlins, the at least one supporting seat consisting of a slotted surface or with a stop flange, and positioned at a height with respect to the support elements for purlin holders, such that in its condition of use the seat provides continuity as a bearing point of said terminals, for the slots of the slotted purlin holder.   
     
     
         12 . The head according to  claim 11 , wherein the horizontal support surface for purlin holders is joined to the supporting seat for purlins. 
     
     
         13 . A purlin holder supportable on a head for support systems for roof formworks, wherein it comprises at least one terminal, the base of which is defined by an inner corner adjacent to the profile and an outer corner longitudinally opposite from the previous one, each corner having a descending extension, which are at a suitable distance in order to fit one of the crossbeams of the head comprising a column collinear to the post and a mechanism for lowering the crossbeams and the horizontal surface through said column, therebetween with a very reduced clearance, the external descending extension of one crossbeam being such that it is the only bearing point of the purlin holder in said head. 
     
     
         14 . The purlin holder supportable on a head according to  claim 13 , wherein the end of the external descending extension is chamfered or rounded, or ends in an angle (α) less than 90°. 
     
     
         15 . The purlin holder supportable on a head according to  claim 13 , wherein it comprises the features of the slotted purlin holder comprising a flat upper surface wherein it comprises at least one slot in the longitudinal direction in the upper surface suitable for receiving the descending extension of a purlin.