Multi-Layer Road Paving Using First-Layer Screed Path Data
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Solution Overview
Problem
Existing methods for installing multi-layer road surfaces require manual steering and adjustment of screed width, leading to inefficiencies and inconsistencies in road surface quality.
Innovation Solution
A method that records installation data during the first layer's installation, using this data to control the second layer's placement, ensuring alignment and consistency through partial manual or automatic steering and screed adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual steering and manual adjustment of screed width are used during multi-layer road surface installation, then operational flexibility is maintained, but road surface quality consistency deteriorates due to human error and inefficiency
Solution Approach 1:
The system records installation data during the first layer installation, including the actual path of the outer edge of the screed. This preliminary data capture enables automatic control during the second layer installation, eliminating manual steering and adjustment operations while ensuring consistent road surface quality across multiple layers.
Solution Approach 2:
The installation data recorded during the first layer serves as feedback for controlling the second layer installation. The system uses this feedback information to automatically adjust the paver's path and screed width, replacing manual operations and ensuring precise alignment between layers for consistent quality.
2Measurement precision
If separate data acquisition steps are performed before multi-layer installation, then planning accuracy is improved, but installation time increases due to additional preparation steps
Solution Approach 1:
The system merges the data acquisition process with the installation process itself. Installation data including the actual path of the screed outer edge is recorded during the first layer installation, eliminating the need for separate pre-installation survey steps. This combined approach maintains precise path determination while reducing total installation time.
Solution Approach 2:
The first layer installation process automatically generates the installation data needed for the second layer, without requiring separate data acquisition operations. The system serves its own data needs by capturing necessary information during normal installation operations, eliminating wasted time on dedicated survey steps.
3Manufacturing precision
If the second layer is installed without using installation data from the first layer, then installation speed is improved by avoiding data processing, but alignment precision between layers deteriorates
Solution Approach 1:
The system performs preliminary data capture during the first layer installation, storing the actual path of the screed outer edge. This pre-captured data is then used to automatically control the second layer installation, ensuring precise alignment between layers without adding significant time to the overall installation process.
Solution Approach 2:
The system replaces manual alignment operations with automatic control based on recorded installation data. The control system automatically adjusts the paver's path and screed width during the second layer installation, substituting manual positioning with data-driven automation to achieve precise layer alignment while maintaining high installation efficiency.
Data Source
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AI summary
To install a multi-layer pavement, a first layer is laid along a straight section using a first paver (1). A second layer is then laid over the first layer using either the first paver (1) or a second paver (1). During the installation of the first layer, paving data is recorded, which at least allows for the determination of a track (43, 45) traversed by the outer edge (31, 33) of the screed of the first paver (1) during the installation of the first layer. This paving data is used to control the first paver (1) or the second paver (1) during the installation of the second layer.