Journal of Food, Agriculture and Environment

Development of blades for rotary tiller for use in Thai soils

Author(s):

Tanya Niyamapa *, Sirisak Chertkiattipol

Recieved Date: 2010-06-07, Accepted Date: 2010-10-18

Abstract:

Three prototype rotary blades designed to reduce the tilling torque, impact force and specific tilling energy were tested in a laboratory soil bin. These new blades were planned to fix on the rotor of a rotary tiller attached to a two-wheel tractor. The shape of the prototype rotary blade was simple for easy production. The experiments with the prototype rotary blades and Japanese C-shaped blade were carried out at forward speeds of 0.069 and 0.142 m/s and at rotational speeds of 150, 218, 278 and 348 rpm (or 3.30, 4.79, 6.11 and 7.65 m/s) by down-cut process in clay soil. Also tests with European L-shaped blade and European C-shaped blade at 0.069 m/s forward speed and the same rotational speeds were conducted. The experimental results of the prototype rotary blades with 15°, 30° and 45° lengthwise slice angle and 6.5 cm tilling width indicated that their torque was evidently less than the Japanese C-shaped blade. The impact force was eliminated. The specific tilling energy per tillage round for new blades was less than the Japanese C-shaped and the European C-shaped blades.

Keywords:

Prototype rotary blade, torque, specific tilling energy

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Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Environment
Pages: 1336-1344

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