Excavator Bucket Bottom Plate Inclination Design
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Solution Overview
Problem
Existing buckets for excavating machines are inefficient in loading large amounts of soil due to suboptimal design, leading to reduced excavation capacity.
Innovation Solution
A bucket design featuring a bottom plate with inclined portions, a bracket for pivotability, and a front lip, optimized to maximize soil loading capacity by adjusting angles and recessed portions for improved soil movement and penetration resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the bucket uses a conventional bottom plate design, then the structure is simple, but the soil loading capacity is insufficient
Solution Approach 1:
The bottom plate is segmented into multiple functional zones: a first inclined portion for initial soil entry, a second inclined portion for soil redirection, and a deepest portion for maximum soil accumulation. This segmentation allows each zone to perform a specific function in the soil loading process, thereby increasing overall loading capacity while maintaining a relatively simple monolithic structure.
Solution Approach 2:
Different regions of the bottom plate are designed with different inclination angles and depths to optimize soil flow and accumulation in specific areas. The first inclined portion has a shallower angle for easy soil entry, while the second inclined portion has a steeper angle for efficient soil redirection toward the deepest portion, creating local optimizations that collectively enhance loading capacity.
2Quantity of substance
If the bucket has a larger opening to load more soil, then the loading capacity increases, but the penetration resistance increases
Solution Approach 1:
The bottom plate incorporates curved inclined surfaces instead of flat planes, creating a smooth, continuous flow path for soil. The curved geometry of the first and second inclined portions guides soil particles along optimized trajectories into the deepest portion, reducing turbulence and improving loading efficiency without requiring a larger opening.
Data Source
AI summary
The bucket includes a bottom plate including a first deepest portion, a bracket provided on a back surface of the bottom plate, and a front lip. The bottom plate includes a first inclined portion on a side where the bracket is attached. A first reference straight line is defined that passes through a pivot axis of a bucket and a tip end of the front lip. A second reference straight line is defined that is orthogonal to the first reference straight line and passes through the first deepest portion. An angle formed between the second reference straight line and the front lip is smaller than an angle formed between the second reference straight line and the first inclined portion. An intersection point between the first reference straight line and the second reference straight line is located close to the front lip on the first reference straight line.