Soil layer drilling hole-forming device

The utility model discloses a soil layer drilling hole-forming device which comprises a main machine frame, the upper end of the main machine frame is connected with a mounting seat, one end of the mounting seat is provided with a motor and a numerical control drop distance controller, and the other end of the mounting seat is connected with a screw rod. The lower end of the screw rod is detachably connected with a rotating cylinder, the bottom end of the rotating cylinder is provided with a soil cutting cutter head, the numerical control falling distance controller is electrically connected with a motor, and the screw rod is driven by the motor to rotationally descend and ascend. According to the utility model, the stability and accuracy of the diameter and depth of the test pit can be ensured, the test data accuracy and the test efficiency are improved, and the labor intensity of workers is reduced. 本实用新型公开了一种土层钻进成孔装置，包括主机框架，所述主机框架上端连接有安装座，所述安装座的一端设有电动机和数控落距控制器，所述安装座的另一端连接有螺杆，所述螺杆的下端可拆卸连接有旋筒.所述旋筒的底端设有切土刀盘，所