FAN GUIDING APPARATUS Russian patent published in 2000 - IPC

FIELD: fan engineering. SUBSTANCE: guiding apparatus may be used in big fans of main ventilation for works of mining, coal mining, metallurgical, and chemical branches of industry. Device for turning the blades is made as coupling on which radial thrust bearing with thrust washer on inner race is positioned. Force is transmitted through inner race to blade. By means of fork, force is transmitted to blade provided with eccentric. Shaft has slits to ensure free motion of coupling. Blades are secured to rod mounted of shaft. Spring is secured in one of rod ends, spring other end being attached to blade or to eccentric. Manufacture and servicing of guiding apparatus are easy. EFFECT: enhanced reliability and maintainability. 3 cl, 1 dwg