Quadruple cutting ring bulldozer

The utility model discloses a quadruple cutting ring bulldozing device which comprises a sliding rod, a pressure spring, a ball bearing, a push block, a clamping groove, a cross beam, a pressing handle, an operation table, a support and a cushion block. The bottom of the operation table is supported by the bracket; a plurality of clamping grooves which are distributed in parallel are formed in theoperation table, and each clamping groove corresponds to one push block; each cutting ring is placed in a clamping groove, a pressing handle is rotated to control a rotating shaft to rotate, then a ball bearing at the cantilever end of a cantilever steel pipe is converted into a horizontal beam downward acting force, a sliding rod pushes a push block to overcome friction force between the inner wall of the cutting ring and a soil sample, soil in the cutting ring in the clamping groove is pushed out, and a pressure spring is compressed at the moment; and the pressing handle is rotated reversely, the sliding rod resets