旋耕机与旋耕刀.ppt

Rotary Tillers And Rotary Blades 旋耕机与旋耕刀 Background ? Rotary tiller (rotary hoe) is widely used for soil cultivation ? In south of China, more than 80% soil tillage work is finished by rotary tillers Rotary tiller used in dry lands L-shaped rotary blades with straight-line edges Rotary tiller used in China Rotary blades with curved edges, used in paddy fields Howard rotavator An Innovation in Australia A long row to hoe The Howard Rotavator In 1912, 16-year-old Cliff Howard had an idea that would change the way small farms were cultivated. To make hoeing more efficient, Howard introduced power to the hoe ’ s blades, so that they would dig the earth and help push the hoe forward at the same time. All the farmer had to do was steer.