Biaxial solar tracker

Abstract

The invention includes a fixed platform bearing a circular rail, supporting rolling elements to which is attached a mobile frame with a sloping structure which holds a number of solar panels, grouped in rows, the panels of each row being connected to corresponding support shafts, supported on the sloping structure, and a device for moving the frame and shafts in accordance with a predetermined configuration. The frame includes a base with attached thereto the rolling elements and the sloping structure is raised above the base, at a distance from the fixed platform and formed by two supporting beams that delimit an oblique plane and are separated from each other by a distance greater than the diameter of the rail.

1 .- 10 . (canceled) 
     
     
         11 . A biaxial solar tracker applicable to a photovoltaic solar installation, of the type comprising
 a horizontal fixed platform, bearing a circular track or rail;   a rotatable frame provided with rolling elements supported on said rail;   a sloping structure with fixed inclination, joined to said frame and having associated thereto a plurality of solar panels, grouped in rows, the panels of each row being connected to a corresponding support shaft which is rotatable about itself or adapted to rotate with respect to another parallel shaft, supported on said sloping structure, and   first means for rotating the mentioned frame and second means for rotating the mentioned support shafts to orient at all times the solar panels in accordance with a predetermined configuration,   wherein the frame comprises support columns and a base with attached thereto said rolling elements,   the sloping structure is raised above, and seated on, said base through said support columns spacing it from the mentioned fixed platform, and   said sloping structure is formed by at least two supporting beams that delimit an oblique plane, said beams being separated from each other by a distance greater than the diameter of the circular rail.   
     
     
         12 . The solar tracker according to  claim 11 , wherein said frame comprises a starting portion integrating several divergent columns joined at points close to their free ends by transverse reinforcing beams, an upper section which is enlarged with respect to the base, encompassed by said free ends, defining a support for square parts or brackets attached to said inclined supporting beams forming the sloping structure. 
     
     
         13 . The solar tracker according to  claim 12 , wherein said supporting beams are inclined an angle substantially equal to the minimum angle of inclination adoptable by each panel plus the mean angle between said minimum angle of inclination and the maximum angle of inclination adoptable by each panel, all of said angles being taken with respect to the horizontal. 
     
     
         14 . The solar tracker according to  claim 13 , wherein said supporting beams are inclined an angle of substantially 45 degrees, said minimum angle of inclination adoptable by each panel is of substantially 10 degrees and said maximum angle of inclination adoptable by each panel is of substantially 80 degrees, all of said angles being taken with respect to the horizontal. 
     
     
         15 . The solar tracker according to  claim 13 , wherein said supporting beams are inclined an angle of substantially 50 degrees, said minimum angle of inclination adoptable by each panel is of substantially 10 degrees and said maximum angle of inclination adoptable by each panel is of substantially 90 degrees, all of said angles being taken with respect to the horizontal. 
     
     
         16 . The solar tracker according to  claim 13 , wherein said support shafts of each row of solar panels are transverse to said supporting beams separated from each other by a sufficient distance so that in none of the positions adoptable by each row of panels does the perpendicular incidence of the sun on the panels of a row cause a shadow on another row of panels, provided that said angle of inclination of the panels is comprised between the minimum angle and the maximum angle. 
     
     
         17 . The solar tracker according to  claim 11 , wherein said second means for moving the support shafts of the rows of solar panels comprise a driving mechanism applied to a shaft and a transmission mechanism formed by connecting rods and levers to transmit the movement to the other shafts. 
     
     
         18 . The solar tracker according to  claim 17 , wherein said driving mechanism and said transmission mechanism are configured to rotate said support shafts about themselves, each of said levers being fixed at a first end to a respective one of said support shafts and articulated at a second end with respect to the end of at least one of said connecting rods. 
     
     
         19 . The solar tracker according to  claim 17 , wherein said driving mechanism and said transmission mechanism are configured to rotate said support shafts with respect to said parallel shafts, each of said levers being articulated at a first end to a respective one of said parallel shafts, fixed at a portion at a distance from said first end to a respective one of said support shafts and articulated at a second end with respect to the end of at least one of said connecting rods. 
     
     
         20 . The solar tracker according to  claim 11 , wherein said support shafts of the rows of solar panels project at their two ends beyond said supporting beams.