Loading Machine Swing Speed Control to Prevent Bucket Interference
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Solution Overview
Problem
In automatic loading control of loading machines, there is a risk of interference between the bucket and the loading target due to mismatched rising and swing speeds, potentially causing collisions during the swinging motion.
Innovation Solution
A control device that generates operation signals for moving the bucket to a loading point and adjusts the target swing speed to prevent interference by determining the interference avoidance position and changing the swing speed accordingly, ensuring the bucket and loading target do not collide during automatic loading operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the swing speed is increased to improve loading efficiency, then productivity is improved, but the risk of interference between the bucket and loading target increases
Solution Approach 1:
The patent applies dynamics by making the swing speed adjustable and adaptive rather than fixed. The control device dynamically changes the swing speed based on real-time conditions, specifically adjusting it when the bucket's rising speed is insufficient or when interference with the loading target is detected. This allows the system to optimize loading efficiency while preventing collisions by varying the swing speed according to actual operational parameters.
Solution Approach 2:
The patent implements feedback control by continuously monitoring the bucket's position, rising speed, and proximity to the loading target. The control device receives information about the bucket's actual performance and automatically adjusts the swing speed in response. This closed-loop feedback mechanism ensures that the swing speed is optimized for productivity while simultaneously preventing interference by responding to real-time operational conditions.
2Productivity
If the rising speed of work equipment is increased to reduce loading time, then productivity is improved, but the synchronization with swing speed becomes more difficult to maintain
Solution Approach 1:
The patent applies parameter changes by adjusting the swing speed parameter in response to changes in the bucket's rising speed. When the rising speed deviates from expected values or when interference is detected, the control device modifies the swing speed parameter to maintain proper synchronization. This dynamic parameter adjustment allows the system to handle variations in rising speed while maintaining coordinated operation between the work equipment and swing body.
3Ease of operation
If automatic loading control is implemented to reduce operator workload, then ease of operation is improved, but the risk of interference due to speed mismatch increases
Solution Approach 1:
The patent implements self-service by enabling the control device to automatically monitor and adjust operational parameters without continuous operator intervention. The system autonomously detects speed mismatches between the bucket rising and swing motion, and automatically corrects them by adjusting the swing speed. This self-regulating capability maintains safety and prevents interference while reducing the operator's workload to simple oversight rather than active control.
Data Source
AI summary
A movement processing unit generates a work equipment operation signal for moving a bucket to a loading point and a swing operation signal related to a target swing speed, based on a command for starting an automatic movement of the bucket. A target speed changing unit changes the target swing speed so that the work equipment does not interfere with the loading target during a swing of a swing body.