Work Machine Heap Height Prediction from Mechanical Dimensions
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Solution Overview
Problem
The challenge in efficiently filling a material accumulation site, such as a stockyard, lies in accurately predicting the height of the material heap formed during stacking work, which is crucial for optimizing the filling process.
Innovation Solution
A system comprising a work machine with a travel body, a work implement, and a controller that determines the height of the material heap based on mechanical dimensions of the machine and implement, allowing precise prediction of the heap height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the heap height is predicted using empirical methods or trial-and-error approaches, then the filling process can proceed, but the accuracy of heap height prediction is insufficient leading to inefficiency in material accumulation
Solution Approach 1:
The patent applies preliminary action by calculating and determining the heap height in advance before actual material stacking operations. The controller computes the predicted heap height based on bucket capacity, number of stacking operations, and material properties, allowing the system to plan and execute stacking more efficiently without trial-and-error adjustments during the process.
Solution Approach 2:
The patent uses copying by creating a virtual model or calculation representation of the heap formation process. Instead of physically trial-stacking material to determine height, the system uses computational modeling to predict heap height based on input parameters, effectively copying the physical process into a computational prediction that guides actual operations.
2Productivity
If the stacking work is performed without accurate heap height prediction, then the operation can proceed quickly, but the material accumulation site cannot be efficiently filled
Solution Approach 1:
The patent implements feedback by using the predicted heap height information to guide and adjust the stacking operations. The controller continuously monitors the stacking process and uses the pre-calculated heap height as a reference target, allowing the system to optimize material accumulation by knowing in advance what the final heap height should be, thus preventing both under-filling and unnecessary over-filling.
Data Source
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AI summary
The height of a heap of material formed by a stacking work is appropriately determined. A work machine main body includes a travel body. A work implement is attached to the work machine main body and includes a bucket. A controller commands operation of the travel body and the work implement. The controller determines a stacking height (H1) that is a height of a heap of material formed by the material in the bucket being discharged onto a ground in a state where the travel body is grounded to the ground from a mechanical dimension including a dimension of the work machine main body and a dimension of the work implement.