Automatic sampling system for wheat

The utility model discloses an automatic wheat sampling system which comprises a connecting body, an extension mechanism is arranged on the lower surface of the connecting body, an insertion mechanism is arranged on the lower surface of the extension mechanism, a fixed disc is rotatably connected to the upper surface of the connecting body, and a motor is fixedly connected to the upper surface of the fixed disc. The output end of the motor penetrates through the fixing disc to be fixedly connected with a connecting body, a connecting block is fixedly connected to the surface of the fixing disc, a handle is fixedly connected to the side face of the connecting block, the extension mechanism comprises an extension body, and a sampling hole is formed in the upper surface of the extension body. According to the utility model, the threaded rod is rotated to enter the screw hole to connect the extension bodies, so that the overall length is increased, or the threaded rod is rotated to detach the extension bodies and