Shovel Load Detection Using Multi-Mode Sensor Timing
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Solution Overview
Problem
Existing shovel technologies face challenges in accurately detecting earth load during tasks that involve minimal boom raising or turning operations, such as unloading earth onto a dump truck, as these operations do not significantly engage the boom or turning mechanisms, making it difficult to determine the earth weight effectively.
Innovation Solution
A shovel system equipped with an attachment and a processor that calculates the weight of the load using multiple modes based on different detection timing, incorporating sensors and hydraulic systems to accurately measure the earth weight even during operations where boom raising or turning is minimal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the shovel uses traditional boom raising or turning operation detection methods, then the earth load can be detected during significant operations, but the detection accuracy deteriorates when minimal boom raising or turning is performed
Solution Approach 1:
The system dynamically switches between multiple detection modes (boom raising mode, turning mode, and combined mode) based on the actual operation being performed. This allows the detection method to adapt to different operational scenarios, including minimal boom raising or turning tasks, thereby maintaining high measurement precision across diverse working conditions
Solution Approach 2:
The system changes the detection parameters and calculation methods based on the operational mode. By adjusting which sensors are activated and how the load is calculated according to the specific operation (boom raising, turning, or both), the system maintains accurate earth load detection even when operations are minimal
2Productivity
If the shovel performs unloading operations with minimal boom raising or turning, then operational efficiency is improved, but the ability to detect earth weight effectively deteriorates
Solution Approach 1:
The system continuously monitors operational parameters and provides feedback to determine which detection mode should be active. This feedback mechanism ensures that the correct sensors and calculation methods are applied based on the actual operation being performed, maintaining accurate weight detection even during high-efficiency unloading operations with minimal boom movement
3Adaptability or versatility
If multiple detection modes are implemented to cover all operational scenarios, then adaptability improves, but device complexity increases
Solution Approach 1:
The system uses a universal detection framework that can handle multiple operation types (boom raising, turning, and combinations) through a single integrated control unit and sensor system. This multi-functional approach allows the system to adapt to various operational scenarios without requiring separate dedicated detection systems for each mode, thereby managing complexity while achieving broad adaptability
Data Source
AI summary
A shovel includes an attachment attached to an upper turning body and a processor configured to calculate a weight of a load carried in the attachment in accordance with a mode selected from a plurality of modes with respect to timing of detection.