Bir Ekskavatör Kol Mekanizması için Kineostatik Analiz ve Kol Silindiri Tasarımı
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Abstract
Ekskavatör kol mekanizmalarının tasarımında maksimum penetrasyon ve kazma kuvvetlerine göre
mekanizmanın kineostatik performansı incelenir. Bu çalışmada dört serbestlik dereceli düzlemsel
bir mekanizma olarak modellenen bir ekskavatör kol mekanizmasının kinematik modeli ile
sunulmuştur. Daha sonra virtüel iş prensibi ile silindir tahrik kuvvetleri ile kepçe penetrasyon
kuvvetinin ilişkisi çıkarılarak maksimum penetrasyon kuvvetinin elde edildiği mekanizma
konfigürasyonu analitik olarak bulunmuştur. Vektörel mekanik yerine analitik mekanik
kullanıldığında mekanizma modelleme ve tasarımındaki basitleşme vurgulanmıştır. Elde edilen
basit kuvvet analizi modeli ile kol silindiri için yeni konum tasarımına yönelik yöntem
sunulmuştur. Son olarak yeni tasarımın bir prototipine yer verilmiştir.
In designing excavator arm mechanisms the kineostatic performance of the mechanism is examined by considering the maximum penetration and digging forces. In this study, first the kinematic model of a excavator arm mechanism, which is modelled as a 4-degree-of-freedom planar mechanism, is presented. Then the relationship of the bucket penetration with the cylinder actuation forces is derived using virtual work principle and the mechanism configuration for which the maximum penetration force is obtained is determined analytically. It is emphasized that using analytical mechanics instead of vectorial mechanics quite much simplifies the mechanism model and design. A method is presented for the desing of the position of the arm cylinder using the simple force analysis model. Finally a prototype of the new design is presented.
In designing excavator arm mechanisms the kineostatic performance of the mechanism is examined by considering the maximum penetration and digging forces. In this study, first the kinematic model of a excavator arm mechanism, which is modelled as a 4-degree-of-freedom planar mechanism, is presented. Then the relationship of the bucket penetration with the cylinder actuation forces is derived using virtual work principle and the mechanism configuration for which the maximum penetration force is obtained is determined analytically. It is emphasized that using analytical mechanics instead of vectorial mechanics quite much simplifies the mechanism model and design. A method is presented for the desing of the position of the arm cylinder using the simple force analysis model. Finally a prototype of the new design is presented.
Description
19. Ulusal Makina Teorisi Sempozyumu (UMTS 2019), İskenderun, September 4-6, 2019
Keywords
Ekskavatör kol mekanizması, Virtüel iş prensibi, Kol silindiri tasarımı, Excavator arm mechanism, Virtual work principle, Arm cylinder design
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WoS Q
Scopus Q
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Start Page
199
End Page
204
