Rainproof cover of transmission shaft connecting piece

The utility model relates to a rain cover of a transmission shaft connecting piece, a transmission shaft is rotatably connected to a mechanism box, the transmission shaft is rotatably connected with a vertical connecting rod through a metal clamping piece, and the rain cover is arranged at the position of the metal clamping piece and comprises a fixing piece covering the transmission shaft and the metal clamping piece. The bottom of the fixing part is arranged on the mechanism box in a sealed mode, the top of the rotating part is arranged on the vertical connecting rod in a sealed mode, and the fixing part and the rotating part are partially overlapped but not in contact. According to the utility model, equipment problems such as corrosion of a metal clamping piece and aging and damage of an internal shaft seal caused by long-term influence of rainwater on a transmission shaft connecting piece are avoided from the source, and the device can also be used as a remedial measure for mechanism box water seepage ca