Coaxial contra-rotating propeller device, assembly method thereof and stratospheric airship

The invention relates to a coaxial contra-rotating propeller device, an assembly method thereof and a stratospheric airship. The coaxial contra-rotating propeller device comprises a first propeller, afirst motor connected to the first propeller through a first connecting structure, a second propeller, a second motor connected to the second propeller through a second connecting structure and a connecting rod, wherein one end of the connecting rod is connected to the first propeller and the first motor through the first connecting structure and the other end of the connecting rod is connected to the second propeller and the second motor through the second connecting structure. 本发明涉及种共轴反桨装置及其组装方法、平流层飞艇，所述共轴反桨装置包括：第螺旋桨；第电机，所述第电机通过第连接结构连接至所述第螺旋桨；第二螺旋桨；第二电机，所述第二电机通过第二连接结构连接至所述第二螺旋桨；连接杆，所述连接杆的端通过所述第连接结构连接至所述第螺旋桨和所述第电机，所述连接杆的另端通过所述第二连接结构连接至所述第二螺旋桨和所述第二电机。