Transmission shaft assembly

The utility model relates to a transmission shaft assembly which comprises a main shaft, a plurality of transmission modules and a plurality of umbrella skirts, the transmission modules and the umbrella skirts are installed on the main shaft, the transmission modules and the umbrella skirts are arranged alternately, and each transmission module is arranged between two adjacent umbrella skirts. The umbrella skirt comprises an inner sleeve and a skirt edge arranged on the periphery of the inner sleeve, a mounting hole is formed in the inner sleeve, and the mounting hole is in interference fit with the main shaft. According to the utility model, reliable connection between the umbrella skirts and the transmission shaft can be effectively ensured, interphase short circuit faults are avoided, and the safety of a power grid is improved. 本实用新型涉及一种传动轴组件，包括主轴，以及安装在主轴上的多个传动模块和多个伞裙，传动模块和伞裙为交替布置，且每个传动模块分别设置有两个相邻的伞裙之间；伞裙包括内套筒，以及设置在内套筒外围的裙边，内套筒内设置有安装孔，安装孔与主轴过盈配合。本实用新型能够有效地保证伞裙与传动轴之间的可靠连接，避免产生相间短路故障，提高电网的安全性。