Menderes KALKAT, Mehmet BAHADIR, Furkan YILMAZ

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

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

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.

Keywords:

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

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