Vertical scarifier

The utility model discloses a vertical scarifier which comprises a case, a plurality of upright shafts, gear wheels and scarifying vanes; wherein the upright shafts thread through the upper wall and the lower wall of the case; bearings are arranged between the upright shafts and the upper and lower walls of the case; the gear wheels are hitched and fixed on the upright shafts in the case; two adjacent gear wheels are meshed with each other to transfer power; one of the upright shafts is connected with an external power device to obtain power; the power device can be an internal combustion engine or an electromotor; scarifying vanes are fixed on the upright shafts at the lower part of the case; and when the upright shafts rotate, the upright shafts drive the scarifying vanes to rotate to break and scarify the soil. The vertical scarifier is simple in structure, low in manufacturing cost, cheap in price, convenient to maintain, big in scarifying depth and good in scarifying effect. The vertical scarifier can be