National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Farming comprises of land preparation, sowing, plant protection, harvesting and post harvesting. The power source of farm machinery in every aspect is an engine, which is the costliest one in relation with the remaining parts of that machinery. If we could use the same source of power for different aspects, investment could be benefitted with multipurpose operations. Most of the farmers own some frequently required equipment like sprayer for fertigation. The engine of the common sprayer is 1hp 2-stroke or 4-stroke with an RPM of 3000 to 9000. If we could use this engine for weeding and harvesting of the crop, that could be an economical practice. Various types of mechanical weeders have been developed by researchers. In human operated weeders, muscular power is required and so it cannot be operated for long time. The traditional weeding is time consuming and demands high man power. To economically use the knapsack sprayer engine a single row power weeder is designed and developed in Department of Applied Engineering, VFSTR, Vadlamudi. The developed weeder is a 0.81 kW, a 2-stroke petrol engine, with compact and light weight, having a durable floating system. It is centrally driven with worm gear box for transmission. The working width of the developed machine is 180 mm. It is equipped with rotating blades, having 200 rpm. Due to compactness and light weight it is easy to carry and operate. The power transmission from the engine to the blade is done by means of a flexible shaft. The shaft dimensions were designed for the adequate strength by using standard formulae for torque and power transmission. The developed machine was field tested and found working effectively.
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