Design, manufacturing and preliminary evaluation of a wheeltrimmer

Document Type : Research article

Authors

1 Senior Expert, Research Institute of Forests and Rangelands

2 Senior Research Expert, Research Institute of Forests and Rangelands

3 Research Expert, Research Institute of Forests and Rangelands

Abstract

     Control of weed is one of the most important problems in the botanic gardens, tree nurseries and plant research centers which generally are man made with high cost and time investment. In this investigation a wheel trimmer (brush cutter) was designed and manufactured which not only is used for weed controlling but also is applicable for seedling and bush cutting, harvesting medicinal plants and lawn mowering. The process of design and manufacturing of this machine consist mechanism selection, calculation of required power, design of the power transmission mechanism, parts design, preparing 2nd and 3rd dimensional drafts, parts manufacturing and assembling. After manufacturing, investigation on application and comparing with other methods and machines especially for time efficiency has been done. Results showed that cultivating, forage harvesting in agroforestry field, medicinal plants harvesting and mowering of old, bushy and uneven lawn are applicable and has better time efficiency compare to manual and other general methods. In bushy nurseries with high density of narrow and high young seedlings, using of this machine with circular saw blade has more efficiency in comparison to chain saw. However, in low density nurseries with thick seedlings (diameter more than 5 cm), chain saw is applicable. This wheel trimmer is a multi purpose machine with four kind knives. It is cheap, high efficient, safe and suitable for gardens, plant research centers and nurseries with low maintenance and repairing costs.

Keywords

References

- رحیمیان، ح.، راشد، م. ح. و بنایان، م.، 1369. علفهای هرز و کنترل آنها. انتشارات جاوید، مشهد، چاپ اول، 288 صفحه.
- شیگلی، ج.، 1378. طراحی اجزاء ماشین. انتشارات آذرنگ، تهران، چاپ چهارم، 981 صفحه.
- منصوری‌راد، د.، 1377. تراکتور و ماشینهای کشاورزی، جلد دوم، انتشارات دانشگاه بوعلی‌سینا، همدان، چاپ سوم، 519 صفحه.
- ولی نژاد، ع.، 1376. جداول استانداردهای طراحـی و ماشـین‌سـازی. انتـشارات تابان، تهران، چاپ پنجم، 322 صفحه.
- Avallone, E.A. and Baumeister, T., 1997. Mark’s Standard Handbook for Mechanical Engineers. McGraw-Hill, New York, 10, 1792 p.
- Anonymous, 1967. Drive type fastenings without taper action; parallel keys, keyways, deep pattern for machine tools; dimensions and application. Din standard No.: 6885-2.
- Anonymous, 1976. Narrow V-belts for industrial engineering purposes; calculation of drives; power ratings. Din standard No.: 7753-2.
- Anonymous, 1988. Endless narrow V-belts for mechanical engineering purposes; dimensions. Din standard No.: 7753-1.
- Oberg, E., Jones, F.D., Horton, H.L., and Ryffel, H.H., 1996. Machinery’s Handbook 25. Industrial Press, New York, 25: 2547 p.
- SKF, 1992. General catalogue. Carl Gerber, first ed., 974 p.
- www.allenpower.com
- www.drpower.com
- www.stihl.com
Iranian Journal of Forest and Poplar Research
Volume 16, Issue 3 - Serial Number 33
December 2008
Pages 367-354

Files

Share

How to cite

Statistics