Cutting ring sampling device

The utility model relates to the technical field of soil sampling equipment, in particular to a cutting ring sampling device, which comprises a cutting ring striking component provided with a striking disc, a screw and a chassis, the top of the screw is fixed in the center of the striking disc, and the bottom of the screw is fixed in the center of the chassis; the outer ring assembly is provided with a rotating disc, a connecting rod, a fixed disc and an outer ring body, the top of the connecting rod is fixed to the center of the rotating disc, a channel is formed from the top of the rotating disc to the bottom of the connecting rod, the screw is arranged in the channel, the bottom of the connecting rod is fixed to the center of the fixed disc, and the fixed disc is provided with a through hole opposite to the channel; the top of the outer ring body is fixedly arranged on the outer arm of the fixed disc; the cutting ring is arranged in the outer ring body and located below the chassis, and the bottom of the o