Soil deep ploughing device

The utility model discloses a soil deep ploughing device which comprises a main fixing frame, first sliding blocks are symmetrically connected to the two ends of the interior of the main fixing frame in a sliding mode, open grooves are symmetrically formed in the two ends of the front side of the main fixing frame, connecting blocks are connected to one ends of the open grooves in a sliding mode, and one ends of the connecting blocks are fixedly connected with the corresponding first sliding blocks. The lower ends of the connecting blocks are fixedly connected with extension rakes, the upper end of the main fixing frame is fixedly connected with a connecting frame, the rear side of the connecting frame is fixedly connected with a transverse frame, one end of the interior of the transverse frame is slidably connected with a second sliding block, and the lower end of the second sliding block is fixedly connected with a hydraulic cylinder. According to the utility model, through the arrangement of the main fixin