CLEARANCE REDUCING DEVICE AND HELIOSTAT WITH CLEARANCE REDUCED STRUCTURE

摘要

Heliostat with dual-axis tracking capacity, comprising: a pedestal (1); a torque tube (2); a plurality of arms (9) to which a plurality of facets (11) configuring the heliostat grid is fixed; an azimuth drive (3) of the torque tube (2) arranged in the pedestal (1); a horizontal support (4) arranged at the upper end of the pedestal (1), connected with the torque tube (2) through cooperating zenith pivots (5) and zenith lugs (8), connected by hinge pins (20); and a zenith drive (7) of the torque tube (2), connected in a pivoting manner to the horizontal support (4) and to said torque tube (2) by means of a zenith anchor (6) and/or lugs (8). Advantageously, said heliostat comprises an anti-astigmatism system, made up of a lattice system attaching consecutive arms (9) of the heliostat, reinforcing the heliostat grid support; and a structural reinforcement of the torque tube (2) comprising a central support (17) which is projected from the center of said torque tube (2); and wherein the end of said central support (17) is finished with two or more front tie rods (18).