Patent ID: 8176806
Filing Date: 2012-05-15
Classification: F16H,F24S,Y02E,Y10T

Abstract:
1. A two-axle drive system for holding and moving large sunlight-absorbing, concentrating or reflecting surfaces about an azimuth axis and an elevation axis, comprising: a one-piece housing having a first housing section and a second housing section, said one-piece housing configured for rotation relative to a fastening flange, a first gear unit located in the first housing section for rotational movement about the azimuth axis, said first gear unit comprising a first worm wheel fastened to the fastening flange attached to a base and a first worm shaft driven by a first drive, and a second gear unit located in the second housing section for rotational movement about the elevation axis, said second gear unit comprising a second worm wheel fastened to a shaft rotatably supported in the second housing section and coaxial with the elevation axis and a second worm shaft driven by a second drive, wherein the second worm shaft is arranged in the one-piece housing centrally beneath the second worm wheel so as to intersect the azimuth axis, with a weight of parts supported by the shaft pressing the second worm wheel in a direction of the second worm shaft, thereby minimizing play between the second worm wheel and the second worm shaft.