Soil sampling device with protection structure

The utility model relates to a soil sampling device with a protection structure. The device comprises a machine body and protection devices, a supporting rod is fixedly installed at the bottom end of the machine body, a sampling part is fixedly installed at the bottom end of the supporting rod, a heat dissipation opening is formed in the surface of the machine body, the protection devices are arranged on the surfaces of the sampling part and the machine body and comprise supporting rings, and the inner walls of the supporting rings are in threaded connection with the outer surface of the sampling part; the surface of the supporting ring is fixedly connected with two supporting blocks, the two supporting blocks are symmetrically distributed relative to the central axis of the supporting ring, the surfaces of the supporting blocks are slidably connected with sliding blocks, a cleaning device is arranged at the position, close to the heat dissipation opening, of the surface of the machine body and comprises a ho