Dragline Bucket Geometry and Arm Layout for Lower Weight Loading

The patent applies parameter changes by optimizing the dimensional ratios of the bucket (W/L, FH/L, BH/L, BH/FH) and modifying the sidewall thickness distribution to achieve reduced weight while maintaining strength. The sidewall thickness transitions from thicker at the base to thinner at the top, changing the mass distribution parameter to reduce overall weight without compromising structural integrity during operation.

The patent applies local quality by giving different thicknesses to different portions of the sidewalls. The sidewalls have increased thickness at the base portion where structural strength is most needed, and reduced thickness at the upper portions where less strength is required. This localized variation in geometry optimizes both performance and manufacturing efficiency.

The patent establishes specific dimensional ratio parameters (W/L between 0.91-1.30, FH/L between 0.47-0.63, BH/L between 0.52-0.70, and BH/FH between 1.06-1.18) that define the optimized geometry. These parameter specifications provide clear design guidelines that balance operational efficiency with manufacturability, transforming complex optimization into manageable parameter ranges.