Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: łyżka koparki

Sortuj według:

Ogranicz wyniki do:

Implementation of experimental method of determining modal characteristics of surface mining machinery in the modernization of the excavating unit

Rusinski E., Dragan S., Moczko P., Pietrusiak D.

Archives of Civil and Mechanical Engineering

2012

Vol. 12, no. 4

471--476

This paper presents a method of determining modal characteristics of surface mining machines, which was used to establish the optimal number of buckets based on experimental studies of an existing machine. An experimental and operational modal analysis was implemented to determine the dynamic characteristics. Based on the technical requirements of the excavator, the quantity of buckets was set so as to avoid resonance during operation.

Dynamics, failures, redesigning and environmentally friendly technologies in surface mining systems

Bosnjak S. M., Zrnic N. D.

Archives of Civil and Mechanical Engineering

2012

Vol. 12, no. 3

348--359

Failures caused by heavy duty conditions, as well as the changes of technological requirements, are basic reasons for the redesign of specific substructures of the high performance machines (HPM). This paper presents solutions of reconstruction and comparative stress analyses for original and redesigned representative HPM subsystems. The efficiency of these reconstructions is unquestionably confirmed by experimental investigations as well as failureless service of mentioned subsystems.

Wpływ parametrów geometrycznych zęba na przebieg procesu urabiania ośrodka spoistego łyżką koparki

Maciejewski J., Jarzębowski A., Trąmpczyński W., Cendrowicz J., Sokołowski K.

Systems : journal of transdisciplinary systems science

2003

Vol. 8, No. sp.

374-382

W pracy przedstawiono program badań eksperymentalnych mający na celu zbadanie wpływu geometrii układu zębów, która modelowała różne etapy zużycia zęba, na mechanikę procesu urabiania łyżką koparki. Przedstawiono wpływ parametrów procesu takich jak: kąt skrawania i rozstaw zębów na wielkość siły urabiania. Badania przeprowadzono dla różnych gęstości modelowego ośrodka spoistego, zwracając szczególna uwagę na różnice pomiędzy generującymi się mechanizmami urabiania.

The new experimental program of laboratory test was presented, performed in a soil bin on cohesive soil. Model tools in a shape of an excavator's bucket equipped with teeth of different geometry were used in thai study. The change in geometry simulated different subsequent slages of material wear. Two different types of soil samples (dense and medium dense) were used.