Dovetail clamp type combined installing part

The utility model discloses a dovetail clamp type combined installing part which comprises inserting piece devices and inserting groove devices. Each inserting piece device comprises a base and a polygonal inserting block. Each inserting groove device comprises a substrate and dovetail clamp clamping pieces. The dovetail clamp type combined installing part is simple and fast in installation process, after the dovetail clamp type combined installing part is installed, the plate surface is flat and stable, the installing part is enough for installing of the large-scale stone plate surface, and an empty drum can not be formed; meanwhile, the functions of being detachable and replaceable are achieved, and installation cost is reduced. Out of consideration of stability and durability, preferably, elastic gaskets are arranged between the dovetail clamp clamping pieces and the substrates. In order to adapt to the elastic direction of the dovetail clamp clamping pieces, preferably, the front portion of each polygonal inserting block is of a diamond.