Green fodder harvester chopping knife with knife sharpening structure

The utility model provides a green fodder harvester chopping knife with a knife sharpening structure, which comprises a chopping frame, the top of the chopping frame is fixedly connected with four fixing rods, one ends of the four fixing rods are jointly connected with a knife sharpening frame in a penetrating manner, one ends of the four fixing rods are all in threaded connection with adjusting nuts which are positioned above the knife sharpening frame, and the adjusting nuts are arranged on the knife sharpening frame. A first spring is arranged between the chopping frame and the knife sharpening frame and arranged on the fixing rod in a sleeving mode. According to the green feed harvester chopping knife with the knife sharpening structure, the knife sharpening grinding wheel can polish the chopping blade, so that harvesting and polishing can be carried out at the same time in the green feed harvesting process of the harvester, the harvesting efficiency and quality are improved, and the situation that the ch