دانلود رایگان مقاله انگلیسی تکنیک های محاسباتی خودکار برای نیروی به کار رفته در حفاری خاک توسط تاب باکت - الزویر 2017

Abstract

The article describes the procedure of automatic calculation techniques for soil digging force applied by a bucket swing using Mathcad software. There are also foundations of calculation of soil digging force applied by a bucket swing depending on swing angle provided. The digging force is one of important parameters of a single-bucket excavator attachment and depends on the dimensions of the components of working attachment, their angles of swing and C is a number of blows by dynamic densimeter (DorNII rammer); s is a thickness of side plate (cm); α is a digging angle (degree); β0 is a side plate tapering factor; μ is a soil excavation technique factor. μ = 1 (for locking excavation) and others parameters of soil. In a digging operation using a bucket swing relative to joint Ok its teeth travel along a circle arc, and the bucket rotates by the angle φ determined by the equation of volume of displaced part of drag prism having bk high and characterized by a segment-shaped cross-section and the volume of soil in the filled bucket. The bucket-filling angle is determined by the successive approximations method. The developed procedure makes such calculation and various investigations possible given with minimum expenses and maximum visualization.

4. Conclusion

The proposed procedure of calculation of digging force applied by a swing of bucket of a single-bucket excavator equipped with backhoe using Mathcad software enables to decrease by an order of magnitude the time of labour inputs of such calculation, as well as pursue investigations related to changing parameters of attachment components.