The utility model discloses a join in marriage experimental stationary gantry of net aims at solving depositing and being experimental of various components such as the unsuitable arrester of supporter, fuse, insulator, and the stationarity is not good in the various component processs of the test such as arrester, fuse, insulator, rocks easily, for experimental the not enough of potential safetyhazard that has brought. The utility model discloses an including being the rack body of stairstepping, all install on each grade step of rack body and lead electrical drainage, be equipped with a plurality of cartridge holes on leading electrical drainage, the cartridge hole is equipped with the insulation board in lining up the rack body on the rack body trailing flank, all be equipped with on the left and right side of rack body and hang the handle, is close to the upper end position on the rack body trailing flank and is connected with the locating lever, is equipped with the cartridge clearance between locating lever and the rack body trailing flank. It is good that the in -process stationarity is deposited and test in the examination of various components such as arrester, fuse, insulator, is difficult for rocking, has ensured that experimental safe and reliable goes on.