The creation system provides an improved transmission structure of the cultivating machine, and solves the shortage of the driving torque of the cultivating machine, and provides an innovative transmission structure with a simplified structure and a one-stage large power output and a lifting transmission torque, in particular: the transmission structure mainly includes There are: an engine that provides a power source; and a clutch transmission that connects the power to output a large power and high torque. The engine has a power output to a power transmission shaft; the clutch transmission includes at least: a casing, a conical friction ring, a conical joint, a lever and an outer cover, thereby forming a swing lever The cone-to-joint can be manipulated to fit the conical friction ring, so that the required large torque can be connected and output, so as to overcome various arable environments in implementation, and at the same time reduce the cost in manufacturing, and obtain the best practical and economical. benefit.本創作係提供一種耕耘機傳動結構改良,在解決耕耘機傳動扭力上的不足,提供一具有精簡構造及一段式大動力輸出和提升傳動扭力的創新傳動結構,特別是:該傳動結構主要結合包括有:一提供動力源之引擎;及一連結動力以利輸出大動力、高扭力之離合器傳動裝置。該引擎具有一提供動力輸出於一動力傳動軸;該離合器傳動裝置至少包含有:一外殼、一圓錐摩擦環、一圓錐對接頭、一撥桿及一外蓋,藉此組成,當擺動撥桿時可操控該圓錐對接頭與該圓錐摩擦環的貼合,使所需大扭力能被連結輸出,以在實施上克服各種耕地環境,同時在製造上達到降低成本,獲致最佳之實用、經濟效益。