BUCKET OVERLOADING RATIO OF MINING SIZE WHEEL LOADERS & LOAD DISTRIBUTION CURVES - A CASE STUDY

Elektrik tekerli yükleyicinin kepçe yükünü izlemek, hem operatörün hem de ekipmanın başarımını değerlendirmek bakımından olağanüstü önemlidir. Kepçeyi makina üreticisi tarafından önerilen hedef yükten az  ya da çok yüklemekten kaçınmalıdır. Optimum yükten az doldurmak araç üretkenliği bakımından, çok doldurmak ise araç ömrü ve sağlığı açısından önerilmez. Kepçenin aşırı yüklenmesi makinadan beklenen ömrün ve arızalar arası sürenin kısalmasına neden olur.  Ege Bölgesinde, Uşak’da bir altın madeninde çalışan bir LeTourneau L-1350 model (21m3) elektrik tekerlekli yükleyicinin başarımı özellikle kepçe yükü ve aşıurı kepçe yükleri yönünden izlenen beş vaka verilmiştir. Vardiya ve günlük kepçe yükü dağılım eğrileri, aşırı ve kritik aşırı yük sayıları ve yüzdeleri irdelenmiştir.

BUCKET OVERLOADING RATIO OF MINING SIZE WHEEL LOADERS & LOAD DISTRIBUTION CURVES - A CASE STUDY

It is extremely important to monitor bucket payload of mining wheel loader in terms of evaluating both performance of the operator and the equipment. Both underloading and overloading should be avoided. It is better sticking to the optimum payload recommended by the Original Equipment Manufacturer (OEM) which represents the optimum load for the equipment. Neither overloading nor underloading of wheel loader (WL) is recommended. Underloading is not good from productivity point of view; whereas, overloading will be shortening the life expectancy of the machine in the long run and lower the Mean Time Between Failures, (MTBF).  A LeTourneau L-1350 model (21m3) Electric Wheel Loader (EWL) operating in a gold mine in Uşak, Aegean Turkey, was monitored via onboard device for five cases. The payloads, overloads and critical overloads; load distribution curves of shifts with respect to overloads investigated. The overload and critical payload counts are given and ratios in total bucket counts are calculated and illustrated for the cases reviewed.

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