Drying device for soil under freeze-thaw cycle

The invention discloses a drying device for soil under the freeze-thaw cycle. The drying device comprises a box body; the upper surface of the box body is provided with a first through hole, and the left side face and the right side face of the inner wall of the first through hole are fixedly connected with the left end and the right end of a slide rod correspondingly; the outer surface of the slide rod is sleeved with a slide sleeve, and the right side face of the slide sleeve is fixedly connected with the left end of a spring; the spring is connected to the outer surface of the slide rod ina sleeving mode, and the right end of the spring is fixedly connected with the right side face of the inner wall of the first through hole; the lower surface of the slide sleeve is fixedly connected with the upper surface of a first servo motor body; and an output shaft of a first servo motor is fixedly connected with fan blades. According to the drying device for the soil under the freeze-thaw cycle, by arranging the fir