High-speed shafting device

The invention discloses a high-speed shafting device, relates to the related technical field of ship propulsion shafting, and is used for solving the problem of unstable sealing performance of an existing high-speed shafting device. The high-speed shafting device provided by the invention comprises a transmission shaft; the two diaphragm couplings are connected to the two ends of the transmission shaft respectively; the liquid film type sealing mechanism comprises a first sealing assembly and a second sealing assembly, the first sealing assembly is fixedly installed on the periphery of the transmission shaft, the second sealing assembly is rotationally connected with the first sealing assembly and located on the periphery of the first sealing assembly, and the second sealing assembly is used for being connected with the cabin wall of a cabin. The sealing structure is used for improving the stability of the sealing performance of the high-speed shafting device. 本申请公开了高速轴系装置，涉及船舶推进轴系相关技术领域，用于解决现有的高速轴系装置密封性能不稳定的