Sample loading device for refractory matter test and loading and unloading method

The invention relates to a sample loading device for refractory matter test and a loading and unloading method. The device comprises a loading weight, a lift, a lifting steel wire rope, a loading steel wire rope, a combined pulley, a metal pressing rod, a spherical supporting seat, an upper pressurizing bar and a lower pressurizing bar, wherein the metal pressing rod, the spherical supporting seat, the upper pressurizing bar and the lower pressurizing bar are coaxially arranged from top to bottom; the lower part of the upper pressurizing bar and the upper part of the lower pressurizing bar are correspondingly arranged in a heating furnace; a sample is loaded between the upper pressurizing bar and the lower pressurizing bar; the combined pulley which is connected to the lift through the lifting steel wire rope is arranged on the top part of the metal pressing rod, and the combined pulley is connected to the loading weight through the loading steel wire rope; the combined pulley can be pulled through the corres