A corn straw total returning combined soil preparation machine

The invention relates to the field of autumn ploughing and soil preparation operation tools, in particular to a corn straw total returning combined soil preparation machine which is composed of a machine frame, a soil straw mechanical processing system, a front depth limiting unit, a rear depth limiting mechanism and a hydraulic adjusting system. The soil straw mechanical processing system is sequentially composed of a straw cutting unit, a leftward turning and throwing unit, a long straw rapid falling unit, a rightward turning and throwing unit, a long straw separating unit, a straw strip deep mixing unit and a soil crushing and leveling unit from front to back. The hydraulic adjusting system is composed of a hydraulic cylinder. 本发明涉及秋季耕整地作业机具领域，具体为一种玉米秸秆全量还田联合整地机，由机架、土壤秸秆机械处理系统、前限深单元、后限深机构、液压调节系统构成；土壤秸秆机械处理系统从前到后依次由切秆单元、左向翻抛单元、长秸秆速落单元、右向翻抛单元、长秸秆分离单元、秸秆条带深混单元、碎土平整单元组成；液压调节系统由液压缸组成。