Excavation Auto Reverse Control for Tool Jamming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Excavation machines often experience unintended stoppages or jamming due to abrupt changes in load, such as encountering tree roots, which can lead to inefficient operations as existing systems struggle to adjust in time.
Innovation Solution
An auto reverse control system is implemented in excavation machines, which monitors parameters like engine speed, excavation tool speed, hydraulic pressure, and flow rate to detect impending jams and automatically reverses the ground drive system to prevent stoppages, allowing for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operator or automated speed control system adjusts the drive speed to account for increased load, then the machine can maintain operation under gradual load increases, but the system cannot respond in time to abrupt load changes causing unintended stoppages
Solution Approach 1:
The control system performs preliminary action by monitoring drive speed and detecting abrupt changes before they cause jamming. When a sudden speed reduction is detected (indicating an abrupt load change), the system automatically reverses the drive direction to free the excavation tool, preventing the stoppage before it fully occurs.
Solution Approach 2:
The system implements feedback by continuously monitoring the drive speed parameter and using this information to detect abrupt load changes. The control system compares current speed against expected speed profiles and automatically responds to deviations, creating a closed-loop control system that adapts to changing conditions in real-time.
2Productivity
If the excavation machine continues at high speed, then productivity is maintained, but abrupt load changes cause the excavation tool to jam or stall
Solution Approach 1:
The system detects abrupt load changes through sudden speed reductions and automatically reverses the drive direction before the excavation tool can jam. This preliminary protective action maintains tool operation stability while allowing the machine to continue at high speed during normal operation.
Solution Approach 2:
The patent replaces manual operator intervention with an automated control system that uses sensors and electronic controls to monitor drive speed and automatically respond to abrupt load changes, eliminating the need for operator reaction and manual speed adjustment.
3Adaptability or versatility
If the operator manually adjusts speed in response to load changes, then the machine adapts to varying conditions, but response time is delayed causing inefficient operations
Solution Approach 1:
The control system performs self-service by automatically detecting and responding to abrupt load changes without requiring operator intervention. The system monitors its own drive speed, detects anomalies, and executes corrective actions autonomously, eliminating the time delay inherent in manual operator response.
Solution Approach 2:
The patent replaces the mechanical/manual speed adjustment process with an automated electronic control system that uses sensors to monitor drive speed and electronically controls the drive motor, enabling instantaneous response to load changes without human intervention.
Data Source
AI summary
The present disclosure provides an excavation machine that is configured to minimize or otherwise account for the unintended stoppage (i.e., jamming/stalling) of a digger tool. According to an embodiment of the present disclosure a machine is provided with one or more drive systems that automatically stop and reverse to avoid excavation tool jamming. The machine and methods of the present disclosure provide an efficient method and machine for excavation operations.