Work Implement Load Control for Automatic Digging Wall Excavation
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Solution Overview
Problem
Existing work machines lack an efficient method for automatically controlling the digging of digging walls, particularly in terms of determining the optimal dig starting conditions and managing load thresholds during the digging process.
Innovation Solution
A system and method for controlling a work machine with a load sensor and processor that detects load thresholds and adjusts the machine's position to either adjacent slots when the load exceeds a certain threshold, allowing for automatic digging and load reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the work machine continuously digs the digging wall without moving, then the digging operation can proceed, but the load on the work implement becomes excessively high
Solution Approach 1:
The system proactively monitors load during digging and triggers a relocation action to an adjacent slot before the load becomes excessively high or causes damage. This preliminary intervention maintains productivity while preventing harmful load conditions.
Solution Approach 2:
The digging operation transitions from a static continuous process to a dynamic intermittent process, where the work machine alternates between digging at the current location and relocating to adjacent slots based on real-time load conditions, optimizing both productivity and load management.
2Force
If the work machine moves to adjacent slots frequently to reduce load, then the load on the work implement is reduced, but the digging productivity decreases
Solution Approach 1:
The load monitoring system provides continuous feedback on the current load conditions during digging. This feedback enables intelligent decision-making about when to relocate, ensuring moves occur only when necessary to maintain optimal load levels, thus balancing load management with productivity.
Solution Approach 2:
The system changes the operational parameter of work machine position by moving to adjacent slots when load conditions warrant it. This parameter change (position) directly affects the load on the work implement, allowing dynamic adjustment between load reduction and productivity maintenance.
3Extent of automation
If automatic control system is implemented for digging wall, then the digging operation can be automated, but the system complexity increases
Solution Approach 1:
The work machine equipped with load monitoring capability performs self-assessment of its operational conditions and autonomously decides when to relocate to adjacent slots. This self-service approach to load management achieves automation without requiring complex external control systems.
Solution Approach 2:
The control system integrates multiple functions including load monitoring, decision-making, and relocation control into a single integrated system. This multi-functionality reduces overall system complexity compared to having separate systems for each function while achieving comprehensive automatic control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the work machine to automatically dig digging walls while reducing the load on the work implement by moving to adjacent slots when the load becomes too high, enhancing operational efficiency.
Implementation Method 1
a load sensor configured to detect a load acting on the work implement
Data Source
AI summary
A system controls a work machine including a work implement. The system includes a load sensor and a processor. The load sensor detects a load acting on the work implement. The processor controls the work machine to dig a digging wall formed between adjacent slots. The processor moves the work machine to either one of the adjacent slots adjacent to the digging wall when the load during digging the digging wall is equal to or greater than a first threshold. A method is executed by a processor to control the work machine. The method includes detecting a load acting on the work implement, controlling the work machine to dig the digging wall, and moving the work machine to one of the adjacent slots when the load during digging the digging wall is equal to or greater than a first threshold.