Supporting device

The utility model provides a supporting device which comprises a supporting frame, first connecting pieces and holding assemblies, the supporting frame comprises a main support and a plurality of branch supports, the branch supports are connected with the main support through the first connecting pieces respectively, the holding assemblies are arranged on the branch supports respectively, and the main support is provided with a plurality of first connecting pieces. The holding assembly comprises a first holding single piece and a second holding single piece, the first holding single piece is arranged on the corresponding branch support in a sliding mode, the second holding single piece is connected with the first holding single piece, and the distance between the second holding single piece and the first holding single piece is adjustable. According to the utility model, the construction difficulty of high-altitude installation of spare parts is reduced, the quality control is convenient, the installation pre