Guide vane shaft is to thrust device

The utility model discloses a guide vane shaft is to thrust device, including thrust ball bearing, limiting plate, spacing bolt and safety cover, thrust ball bearing fix the center part at the stator upper end cover, the limiting plate locate thrust ball bearing's top, the limiting plate both ends are through axle sleeve fixed connection on spacing bolt and the stator, the safety cover be equipped with between thrust ball bearing and the limiting plate, limiting plate center department be equipped with the recess that matches with the safety cover, be equipped with the spring in the recess. The utility model discloses be equipped with on the limiting plate with safety cover assorted recess, be equipped with the spring simultaneously, avoided the direct contact of safety cover and limiting plate, strengthen this thrust device's practicality, increase of service life, use the utility model discloses a thrust device need not the annual abrasion part who adjusts the thrust clearance and repair the thrust piece, a