Dinamik yüklerin etkisi altında abrasiv aşınma gösteren beko-loder kova tırnaklarının çalışma ömürlerinin belirlenmesi

Yıl 2023, , 1499 - 1507, 15.10.2023

Menderes Kalkat , Mehmet Bahadır , Furkan Yılmaz

https://doi.org/10.28948/ngumuh.1324598

Öz

Özellikle gelişmekte olan ülkelerde altyapı çalışmalarının ön plana çıkması, iş makinalarına olan talebi arttırmaktadır. Beko loderler; inşaat sektöründe, altyapı, yol yapımı, bakım ve onarım gibi birçok alanda kullanılan ön tarafta kova grubu, arka tarafta kepçe grubundan oluşan küçük tonajlı iş makineleridir. Kovaların ön kısmına cıvatalı veya kaynaklı olarak monte edilen dişler, toprak ve kayaların aşındırıcı etkilerine karşı kovayı korurlar. Büyük yükler altında dişlerin çok çabuk şekilde aşınması iş makinalarında önemli bir masraf gideri olarak karşımıza çıkmaktadır. Bu çalışmada, beko-loader kovalarındaki dişlerde, dinamik yüklerin etkisi altında gerilmeler belirlenmeye çalışılmıştır. Bu bağlamda sektörde sık kullanılan iki farklı model dişin, ayrık eleman ve sonlu elemanlar yöntemi yardımıyla aşınma durumlarının belirlenmesi amaçlanmıştır.

Anahtar Kelimeler

Beko Loder, Diş, Aşınma, Ayrık Elemanlar Metodu (DEM), Ömür

The determination of the working life of backhoe-loader bucket teeth showing abrasive wear under the effect of dynamic loads

Öz

Especially in developing countries, the rise of infrastructure works increases the demand for heavy machines. Backhoe loaders: These are small tonnage work machines consisting of a bucket group at the front and a bucket set at the back, which are used in many areas such as infrastructure, road construction, maintenance, and repair in the construction industry. The teeth, which are bolted or welded to the front of the buckets, protect the bucket against the abrasive effects of soil and rocks. The rapid wear of the teeth under great loads is an important cost item in construction equipment. In this study, the stresses under the effect of dynamic loads were tried to be determined in the teeth in the backhoe loader buckets. In this context, it is aimed to determine the wear conditions of two different models of teeth, which are frequently used in the sector, with the help of the discrete element and finite element methods.

Anahtar Kelimeler

Tooth, Wear, Discrete Element Method, Lifetime, Backhoe-loader

Teşekkür

We owe a debt of gratitude to the Metalon Steel company for the information about the mechanical and chemical properties of teeth and the valuable information they provided about the bucket teeth of construction machinery.

Kaynakça

• S.K. Gencer, Investigation of the effect of hardening heat treatment methods on the mechanical and wear properties of aisi 4140 quality steel. Master ’s Thesis, Gebze Technical University Graduate School of Natural and Applied Sciences, Turkey, 2020.
• J.M. Boac, R.P.K. Ambrose, M. E. Casada, R.G. Maghirang, D.E. Maier, Applications of discrete element method in modeling of grain postharvest operations. Food Engineering Reviews, 6(4), 128–149. https://doi.org/10.1007/s12393-014-9090-y 2014
• F. Yılmaz, Analysis of wear effect, fatigue, and working life of backhoe loader bucket teeth with 1 m3 capacity under dynamic loads. Master ’s Thesis, Niğde Omer Halisdemir University Graduate School of Natural and Applied Sciences, Turkey, 2023
• P. Wang, D. Si, S. Wang and Q. Yi, Study on gage widening methods for small-radius curves. China Academy of Railway Sciences Corporation Limited, Beijing 100081, China, Applied Sciences. 2021.
• M. Bahadır, M.A. Tekeli, New backhoe loader tooth model design, analysis and manufacturing. International Congress of Climate Change: Sustainability on Health, Agriculture, Food and Livestock Policies ICSAFL 2018 Amsterdam, Holland.
• S. Oz, Dynamic analysis of backhoe loader bucket teeth. Master ’s Thesis, Niğde Omer Halisdemir University Graduate School of Natural and Applied Sciences, Turkey, 2022.
• M. Ozdoğan, Bucket penetration mechanism and bucket penetration force of dragline excavators. 42, (1), 17-26. 2003
• S. Kalpak, R. Dagwar, G. Telrandhe, Excavator bucket tooth failure analysis. International Journal of Research in Mechanical Engineering and Technology, 5 (2) issn: 2249-5762 (online) 2015.
• S. Khan, M. Sheikh, Comparative analysis of wear for excavator bucket tooth using different materials. International Journal of Science and Research (IJSR), 5(5), 2016.
• S.H. Suryo, W.M. Fawwaz, Y.A. Wijaya, E.W. Saputro, H. Harto, Analysis and topology optimization structural design excavator bucket tooth using finite element method. The 5th International Conference on Industrial, Mechanical, Electrical, And Chemical Engineering (ICIMECE 2019), 2020. https://doi.org/10.1063/5.0000531 2020.
• V.A. Polovinko, A.I. Fedulov, Abrasive wear of excavator teeth. Journal of Mining Science, 29, 48–51. 1993. https://doi.org/10.1007/BF00734332.
• V. Moni, P. Klouda, T. Miletič, F. Helebrant, L. Donát, J. Blata, M. Řehoř, Evaluation of tooth no. 2674 and esco tooth 3d models. Multidisciplinary Aspects of Production Engineering – MAPE, 2 (1) 2019.
• Z. Virag & S. Sandor, Examination of an optimized replaceable cutting tooth of excavator. Geosciences and Engineering, 1 (2), 337–342 .2012.
• M. Popović, I. Milićević, G. Marković, M. Marjanović, V. Vujičić, Load analysis for the design of cutting teeth for bucket chain excavators. 8th International Scientific Conference Technics and Informatics in Education Faculty of Technical Sciences, Čačak, Serbia, 18 - 20th September. 2020
• Z. Ren, H. Sun, Y. Liang, Y. He, M. Feng, Strength analysis of excavator bucket based on normal digging trajectory and limiting digging force. Journal of Vibroengineering, 23(1), 2021
• İ. Ovalı, C. Esen, ANSYS Workbench.3 rd edition. 2018
• Q. Bader, E. Kadum, Mean stress correction effects on the fatigue life behavior of steel alloys by using stress life approach theories. International Journal of Engineering & Technology IJET-IJENS, 14 (4), 50-58. https://doi.org/10.12691/ajme-4-7-15 2014.