Self-Propelled Construction Machine Milling Depth Control
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Solution Overview
Problem
Self-propelled construction machines face challenges in maintaining optimal milling depth due to variations in advance speed and milling drum rotational speed, leading to deviations from the desired milling depth and resulting in uneven terrain surfaces.
Innovation Solution
The control and processing unit of the construction machine is configured to determine a characteristic variable of the milling profile based on the functional relationship between advance speed and milling drum rotational speed, allowing for automatic correction of the milling depth to ensure consistency with the desired depth, regardless of the machine's speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the construction machine operates at higher advance speeds or different milling drum rotational speeds, then productivity is improved, but the milling depth deviates from the desired depth and the terrain surface becomes uneven
Solution Approach 1:
The control and processing unit continuously monitors the actual milling depth and compares it with the desired milling depth. Based on this feedback, the system automatically adjusts the milling drum height to correct deviations caused by variations in advance speed or rotational speed, ensuring consistent milling depth while maintaining high productivity
Solution Approach 2:
The system dynamically adjusts the milling drum height during operation based on real-time conditions. The lifting device automatically raises or lowers the milling drum to compensate for changes in advance speed or rotational speed, allowing the machine to maintain optimal milling depth across varying operating conditions without manual intervention
2Manufacturing precision
If manual corrections are used to maintain desired milling depth, then milling depth precision is improved, but operation complexity and time consumption increase
Solution Approach 1:
The system performs self-correction of milling depth deviations automatically. The control and processing unit monitors milling parameters and triggers the lifting device to adjust the milling drum height without requiring operator intervention. This self-service capability maintains precise milling depth while simplifying operation and reducing time consumption
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated control system. The control and processing unit uses sensors and computational logic to automatically command the lifting device, substituting the operator's mechanical adjustment actions with an automated electro-mechanical system that achieves the same precision with greater ease
Data Source
AI summary
The invention relates to a self-propelled construction machine, comprising a machine frame supported by a chassis having wheels or crawler tracks. The basic principle of the invention involves determining a variable Δ which is characteristic of the milling profile on the basis of a functional relationship between the variable which is characteristic of the milling profile and the advance speed v and/or milling drum rotational speed n. The variable Δ which is characteristic of the milling profile is a correction variable for adjusting the height of the milling drum with respect to the surface of the ground.