REDUCTION GEAR FOR ANTENNA SYSTEM CONTROL Russian patent published in 2002 - IPC

FIELD: mechanical gear trains; electric servo drives. SUBSTANCE: proposed reduction gear includes rigid gear wheel, flexible gear wheel, wave generator and output shaft. Wave generator is made in form of hollow cylinder whose one end is supported by bearing over its inner surface and is engageable with gear wheel of drive electric motor over its outer surface. Other end of hollow cylinder is floating; this end is engageable with flexible gear wheel through hold-down bearings which are located on flexible cantilever beams formed by slots along axis of hollow cylinder thus ensuring backlashless engagement of flexible gear wheel with rigid gear wheel. Supporting bearings are secured on rigid base on hollow cylinder for reduction of elastic backlash of gear train. Flexible gear wheel is rigidly connected with output shaft which is secured in radial-thrust ball bearings and has output ends on either side for securing the antenna assembly. EFFECT: enhanced precision of gear train. 1 dwg