Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mechanics performance of three-degree-of-freedom excavating mechanism for an electric shovel
Electric shovel is one of the most important equipment in surface-mining operations. The medium-tool interaction model is an essential basis in the process of machine design. Therefore, it is important to make the model accurate compared to the actual situation. This article proposes a new medium-tool interaction model based on the analysis of medium-tool interaction mechanism taking into account the actual excavating process. The result of the new model is quite in agreement with the full-scale tests. In order to make the excavating process more efficient, the traditional two-degree-of-freedom (DOF) excavating mechanism is redesigned and a new three-DOF excavating mechanism is obtained. A new electric shovel with three-DOF excavating mechanism is more flexible in that it will perform the excavation process with a favourable excavating angle that can reduce the resistance force involved in medium-tool interaction. Based on the new medium-tool interaction model, the dynamic model of the three-DOF excavating mechanism is established for the mechanics performance analysis. The numeric validation shows that the new excavating mechanism is more efficient in the excavating process.
Mechanics performance of three-degree-of-freedom excavating mechanism for an electric shovel
Electric shovel is one of the most important equipment in surface-mining operations. The medium-tool interaction model is an essential basis in the process of machine design. Therefore, it is important to make the model accurate compared to the actual situation. This article proposes a new medium-tool interaction model based on the analysis of medium-tool interaction mechanism taking into account the actual excavating process. The result of the new model is quite in agreement with the full-scale tests. In order to make the excavating process more efficient, the traditional two-degree-of-freedom (DOF) excavating mechanism is redesigned and a new three-DOF excavating mechanism is obtained. A new electric shovel with three-DOF excavating mechanism is more flexible in that it will perform the excavation process with a favourable excavating angle that can reduce the resistance force involved in medium-tool interaction. Based on the new medium-tool interaction model, the dynamic model of the three-DOF excavating mechanism is established for the mechanics performance analysis. The numeric validation shows that the new excavating mechanism is more efficient in the excavating process.
Mechanics performance of three-degree-of-freedom excavating mechanism for an electric shovel
Mechanische Leistungsfähigkeit eines Schaufelmechanismus mit drei Freiheitsgradenfür einen elektrisch betriebenen Bagger
2011
15 Seiten, 21 Bilder, 6 Tabellen, 12 Quellen
Aufsatz (Zeitschrift)
Englisch
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