Brushless motor installation device and installation method

The invention belongs to the technical field of brushless motor installation, and particularly relates to a brushless motor installation device and method. The brushless motor installation device comprises a supporting plate, supporting columns are fixedly installed on the periphery of the supporting plate, a top plate is fixedly connected to the tops of the supporting columns, pressing blocks are slidably installed on the left side and the right side of the top plate, and the pressing blocks are connected with the supporting plate through springs; a supporting seat is placed between every two adjacent pressing blocks, a brushless motor body is installed on the surface of each supporting seat, a mounting frame is fixedly arranged on the outer side of each brushless motor body, mounting assemblies are arranged on the front side and the rear side of a supporting plate, shear type lifters are installed on the front side and the rear side of each supporting seat, and sliding frames are installed on the tops of th