Rub-impact damping protection device for high-speed rotary machine

[0021] The present invention is a rubbing and damping protection device for high-speed rotating machines, which includes an upper cover plate 7, a lower cover plate 1, a casing 4 (or a corrugated ring), a slider 9, a rubbing ball head 8 and a metal rubber ring 3 . Both the shell 4 and the slider 9 are annular bodies. The middle part of the upper cover plate 7 is provided with an upper through hole 7-1, and the middle part of the lower cover plate 1 is provided with a lower through hole 1-1. Both the upper through hole 7-1 and the lower through hole 1-1 are circular holes. The rubbing ball head 8 is preferably made of bronze, graphite or polytetrafluoroethylene. The shell 4, the slider 9, the upper through hole 7-1 and the lower through hole 1-1 are coaxial. The upper end of the shell 4 is fixedly connected with the upper cover 7 , and the lower end of the shell 4 is fixedly connected with the lower cover 1 . There are many ways to fix the connection, such as bolt connection.