Thrust ball bearing type guide vane thrust device

Provided is a thrust ball bearing type guide vane thrust device. A thrust ball bearing is installed on a center portion of an upper end cover of a guide vane, a limiting rod is arranged on the top portion of the thrust ball bearing, two ends of the limiting rod are respectively and fixedly connected with an upper shaft sleeve of the guide vane through a limiting bolt, and a protecting jacket is arranged between the thrust ball bearing and the limiting rod. The thrust ball bearing type guide vane thrust device uses the thrust ball bearing on a center point of the top portion of the guide vane to serve as a thrust braking point, frictional force during rotation of the thrust ball bearing is extremely small, a whole set of the thrust brake, a top cover, the upper shaft sleeve of the guide vane, a guide vane arm and the guide vane form a whole during rotation, and influences caused by deformation of the top cover and the upper shaft sleeve of the guide vane, nonperpendicularity of the guide vane, unbalanced force