Sorghum stalk harvester

The invention relates to the field of crop harvesting, in particular to a sorghum stalk harvester. The sorghum stalk harvester comprises a walking mechanism, a clamping mechanism and spike scraping mechanisms. The walking mechanism comprises walking wheels and a walking plate, an air cylinder I is arranged at the front end of the walking plate, and a cutter is connected to an output shaft of the air cylinder I. The clamping mechanism comprises a fixing block and two clamping strips, wherein the upper end of a supporting rod is fixedly connected with the fixing block, the lower end of the supporting rod is fixedly connected with a stepping motor, the clamping strips are horizontally connected to the fixing block in a sliding mode, an air cylinder II for driving the clamping strips to slide is arranged on the fixing block, each clamping strip is provided with the corresponding spike scraping mechanism, and the two spike scraping mechanisms are oppositely arranged. Each spike scraping mechanism comprises an air