Gravity exhaust type loess sampling device

The utility model provides a gravity exhaust type loess sampling device, which is used for geological sampling of loess strata and comprises a winch, a steel wire rope, a support frame and a soil sampler, the winch is arranged on the ground, the winding end of the winch is connected with one end of the steel wire rope, and the other end of the steel wire rope is connected with the soil sampler through the supporting frame erected above the soil sampling point. The soil sampler is vertically arranged and is provided with a sampling tube and a connecting part fixed at the upper end part of the sampling tube, the lower end part of the sampling tube is an open sampling opening, at least one exhaust groove penetrating through the wall surface is formed in the wall surface, close to the sampling opening, of the sampling tube along the circumferential direction, and a through hole is formed in the upper end part of the connecting part; and the other end of the steel wire rope penetrates through and is fixed. Therefo