A Research on the Evaluation of Front Hard Point Part of Agricultural and Forestry Tractors

Abstract

In this study, in order to determine the strength characteristics of front hard point of tractor’s bonnet, two different loading conditions, which would be reference for OECD Codes, were planned and conducted. For this purpose, two NH TD 65 tractors were selected for the tests. At the end of the tests, test materials could resist against the simulated load, and it was seen that the front hard point of these tractors were found strong enough and the simulated ground bar was not enter the clearance zone. The applied loads were measured as 53 kN and 51.83 kN. These loads were two times more than the tractor mass that was considered as a reference load during the test

Keywords

• Tractor
• roll-over protective structure
• overturning

Tarım ve Orman Traktörlerinde Ön Sert Bölgenin Değerlendirilmesi Üzerine Bir Araştırma

Abstract

Bu çalışmada, OECD traktör Kod’larına referans olabilecek, traktör kaportası ön sert bölgesinin dayanım özelliklerini belirlemek için iki farklı yükleme koşulu planlanmış ve uygulanmıştır. Bu amaçla, aynı özelliğe sahip iki NH TD 65 traktörü seçilmiştir. Yükleme sonunda, araştırma materyali traktörler, uygulanan yüke dayanmış, traktörün ön sert bölgesi yeterince güçlü bulunmuş ve güvenli yaşam bölgesine giriş olmamıştır. Traktörlere uygulanan maksimum yükler 53 kN ve 51.83 kN olarak ölçülmüştür. Bu yükler test sırasında referans olarak alınan traktör kütlesinin iki katından daha fazladır

Keywords

• Traktör
• yuvarlanmaya karşı koruyucu yapı
• devrilme

References

1. Chisholm, C. J. 1979. A mathematical model of tractor overturning and impact behaviour. Journal of Agricultural Engineering Research 3(24): 375-394.
2. Çay, C.,İ., H. Taşbaş, A. Aygül ve H. Silleli. 2003. Tarım veya Orman Traktörlerine Takılan Koruyucu Yapılara Uygulanan Statik Test Yöntemi. Tarımsal Mekanizasyon 21. Ulusal Kongresi, 157-166 Konya.
3. EEC 1987. Directive 87/402/EEC, modified with Dir. EEC 89/681, 2000/22. European Economic Community, Strasbourg.
4. Myers, M. L. 2000. Prevention effectiveness of rollover protective structures, Part I: Strategy evolution. Journal of Agricultural Safety and Health 6(1): 29-40.
5. OECD 2003. A new proposal for Roll-Over Protective Structures (ROPS)=Self deployable protective structures for agricultural tractors. AGR/CA/T(2003)23. Organisation for Economic Co-operation and Development, Paris, France
6. OECD 2005a. Hard points to use as reference for the determination of the simulateed plane: proposal from Italy/Turin. AGR/CA/T/RD(2005)19. Organisation for Economic Co-operation and Development, Beijing, China.
7. OECD 2005b. Determining the front hard point in Japan. AGR/CA/T/RD(2005)29. Organisation for Economic Co-operation and Development, Beijing, China.
8. OECD 2007. Front hard point selection. TAD/CA/T/RD(2007)8. Organisation for Economic Cooperation and Development, Ankara, Turkey.

9. OECD 2008a. Standard Codes for The Official Testing of Agricultural and Forestry Tractors. Organisation for Economic Co-operation and Development, Paris, France
10. OECD 2008b. OECD Code 6. Standard Code for the official testing of front mounted roll-over protective structures on narrow-track wheeled agricultural and forestry tractors. Organisation for Economic Co-operation and Development, Paris, France
11. Schwanghart, H. 1982. Umsturzverhalten von tractoren und auswirkungen auf die schutzvorrichtunden und die sicherheit. Institut für Kraftfahrtechnik, Forderwesen und Agrartechnik Lehrstuhl für Landmaschinen, Munchen, Germany.
12. Silleli, H., M. A. Dayıoğlu, A. Gültekin, K. Ekmekçi, M. A. Yıldız E. Akay ve G. Saranlı. 2007. Anchor mechanism to increase the operator clearance zone on narrowtrack wheeled agricultural tractor: Prototype and first tests. Biosystems Engineering 97(2): 153-161.
13. Silleli, H., 2007. Research on applying an anchor mechanism to orchard and vineyard tractors produced in Turkey. Turkish Journal of Agriculture and Forestry 31:389- 398