1results about How to "Avoid incompatibility" patented technology

The application relates to a speed reducer and a middle shaft structure thereof. The middle shaft structure of the speed reducer comprises a rotating adjusting piece, an extension assembly and a barrel. In the process of installing the middle shaft structure of the speed reducer into the main beam of a photovoltaic assembly, the extension assembly is moved close to the axis of the barrel through the cooperation between the rotating adjusting piece and the extension assembly, the middle shaft structure of the speed reducer is put into the main beam of the photovoltaic assembly, the extension assembly is moved away from the axis of the barrel through the cooperation between the rotating adjusting piece and the extension assembly, and the extension assembly is matched with the inner wall of the main beam, the outer diameter of the middle shaft structure of the speed reducer is matched with the inner diameter of the main beam, the middle shaft structure of the speed reducer is driven by a driving mechanism to drive the main beam to rotate, and the photovoltaic assembly is kept facing the sun. The middle shaft structure of the speed reducer can be mass-produced to be suitable for main beams with different inner diameters, the problem that the middle shaft structure of the speed reducer is not matched with the main beam due to size errors is avoided, the installation efficiency is improved, and the production and installation costs are reduced.