Solar tracker

Abstract

Solar tracker comprising a pedestal ( 1 ) upon which a structural support ( 10 ) is fixed for a reflective surface ( 15 ), which comprises: a fixed base ( 2 ) anchored to the floor, which comprises a flat upper surface ( 7 ) with an opening, a vertical axis mechanical rotation element ( 3 ) arranged in the opening of the flat surface ( 7 ) of the fixed base ( 2 ) and fixed to the pedestal ( 1 ) and an azimuthal rotation actuator cylinder ( 4 ) of the structural support ( 10 ), comprising a first end fixed to the floor by an anchoring means ( 16, 2 ) and a second end fixed to the mechanical rotation element ( 3 ) by fixation means, the mechanical rotation means being configured in such a way that when the actuator cylinder carries out its movement, the mechanical rotation element transmits the rotational movement of the second end of the actuator cylinder to the pedestal ( 1 ).

1 . Solar tracker comprising:
 a pedestal upon which a structural support for a reflective surface is fixed,   a fixed base anchored to the floor, which comprises a flat upper surface with an opening,   a vertical axis mechanical rotation element arranged in the opening of the flat surface of the fixed base and fixed to the pedestal and   an azimuthal rotation actuator cylinder of the structural support, which comprises a first end fixed to the floor by an anchoring means and a second end fixed to the mechanical rotation element by fixation means,   
       the mechanical rotation element being configured in such a way that when the actuation cylinder carries out its movement, the mechanical rotation means transmits the rotational movement of the second end of the actuation cylinder to the pedestal. 
     
     
         2 . Solar tracker according to  claim 1 , wherein mechanical rotation element comprises a fixed ring, fixed to the fixed base and a mobile ring which comprises an upper face to which a lower end of the pedestal is fixed and a lower face to which the second end of the actuator cylinder is fixed. 
     
     
         3 . Solar tracker according to  claim 2 , wherein the fixed base anchored to the floor comprises a lateral opening. 
     
     
         4 . Solar tracker according to  claim 3 , wherein the actuator cylinder is arranged below the flat surface of the fixed base anchored to the floor and crossing the lateral opening. 
     
     
         5 . Solar tracker according to  claim 4 , wherein the fixed base comprises a second lateral opening opposite to the first opening. 
     
     
         6 . Solar tracker according to  claim 5 , wherein a second cylinder is arranged below the flat surface of the fixed base anchored to the floor and crossing the second lateral opening, which comprises a first end fixed to the floor by an anchoring means and a second end fixed tangentially to the lower face of the mobile ring of the mechanical element by means of a mobile anchoring piece, to which the second end of the first cylinder is also anchored. 
     
     
         7 . Solar tracker according to  claim 1 , wherein an elevation cylinder is anchored to the pedestal by a first end by means of a first anchoring and anchored by a second end to the structural support of the reflective surfaces by means of a second anchoring. 
     
     
         8 . Solar tracker according to  claim 1 , wherein an upper bench is fixed to an upper end of the pedestal, which comprises a rotation system which rotates in relation to a horizontal axis fixed to the structural support, operable by means of the second end of the elevation cylinder. 
     
     
         9 . Solar tracker according to  claim 8 , wherein the rotation system comprises two articulations, each one of which comprises two rotating side plates fixed to the structural support with a fixed support arranged between both and joined to them by means of a horizontal rotation axis of the structural support. 
     
     
         10 . Solar tracker according to  claim 1 , wherein the cylinder is an oleohydraulic cylinder. 
     
     
         11 . Solar tracker according to  claim 10 , wherein a pressurised oil supply system for supplying the oleohydraulic cylinder comprises a motor-pump unit, an oil deposit, regulatory means for regulating the velocity of the cylinders and oil supply means. 
     
     
         12 . Solar tracker according to  claim 11 , wherein a piece of pressurised oil supply system control equipment comprises configuration, calibration, motorisation, diagnostic and management means for the operating settings of the oil supply system. 
     
     
         13 . Solar tracker according to  claim 1 , wherein the anchoring means comprises:
 a base fixed to the floor by anchoring means, with a circular opening or drill hole,   a piece which is parallel to said base, with a circular coaxial opening which is concentric to the opening or drill hole in the base,   a piece which is perpendicular to the base and to the piece which is parallel to the base, located between both, upon which the piece parallel to the base is fixed, at a distance such that it is possible to locate the ball joint of the hydraulic cylinder between the base and the parallel piece and,   a vertical fixation axis which crosses the drill holes or openings in the base and the parallel piece and the ball joint.   
     
     
         14 . Solar tracker according to  claim 1 , wherein the means for anchoring to the floor comprise the fixed base anchored to the floor. 
     
     
         15 . Solar tracker according to  claim 14 , wherein the fixed base comprises at least one arm in the form of a U. 
     
     
         16 . Solar tracker according to  claim 1 , wherein the rotating mechanical element is an element selected from a bearing or a slew ring. 
     
     
         17 . Solar tracker according to  claim 1 , wherein the hydraulic cylinders have a diameter of between 120 and 240 mm. 
     
     
         18 . Solar tracker according to  claim 1 , wherein the radius of the mechanical rotation element is greater than 700 mm.