Automatic Calculation Techniques for Soil Digging Force Applied by Bucket Swing

摘要

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.