Slip Form Paving Machine Swelling Sensor Control
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Solution Overview
Problem
The phenomenon of concrete swelling after formation during slip form paving poses challenges in maintaining consistent concrete slab height and surface quality, as existing technologies lack effective detection and adjustment mechanisms.
Innovation Solution
A slip form paving machine equipped with height adjustable lifting columns, a swelling sensor system, and a controller that adjusts operating parameters such as travel speed, vibrator speed, concrete supply gate height, and longitudinal inclination to counteract concrete swelling, ensuring consistent slab formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If slip form paving is performed without swelling detection, then the paving process is simple and fast, but the concrete slab height consistency deteriorates due to swelling
Solution Approach 1:
The patent implements a feedback control system where swelling sensors continuously monitor the concrete slab height behind the mold, and the controller automatically adjusts machine operating parameters (travel speed, vibrator speed, gate height, inclination) based on the detected swelling to maintain consistent slab height
Solution Approach 2:
The patent replaces manual observation and mechanical adjustment methods with automated sensor-based detection and electronic control systems, using height sensors, swelling sensors, and controllers to automatically manage the paving process
2Measurement precision
If manual monitoring of concrete swelling is performed, then equipment complexity is low, but measurement precision and response time deteriorate
Solution Approach 1:
The patent replaces manual visual inspection with automated optical or electronic height sensors and swelling sensors that continuously and precisely measure concrete slab dimensions, providing accurate real-time data to the control system
Solution Approach 2:
The system enables self-monitoring and self-adjustment where the paving machine automatically detects its own operational parameters and swelling conditions through integrated sensors, and autonomously corrects deviations without external intervention
3Manufacturing precision
If machine parameters are adjusted frequently to compensate for swelling, then slab height consistency improves, but productivity deteriorates due to continuous adjustments
Solution Approach 1:
The patent implements continuous real-time monitoring and continuous automatic adjustment of machine parameters, eliminating interruptions and maintaining uninterrupted paving operation while consistently compensating for swelling to preserve both precision and productivity
4Manufacturing precision
If automated swelling control is implemented, then manufacturing precision improves, but ease of operation deteriorates due to complex control systems
Solution Approach 1:
The paving machine performs self-diagnosis and self-correction through integrated sensors and automated control algorithms, detecting swelling conditions and automatically adjusting operating parameters without requiring operator intervention or complex manual control
Solution Approach 2:
The system provides automated feedback loops where sensors monitor slab height and swelling, the controller processes this information, and adjustments are automatically made to machine parameters, replacing complex manual operation with streamlined automated control
Data Source
AI summary
A slip form paving machine includes a machine frame (10), a plurality of ground engaging wheels or tracks (30,30F,30R) and front and rear height adjustable lifting columns (32,32F,32R) supporting the machine frame from the ground engaging wheels or tracks, the lifting columns being adjustable to adjust a longitudinal inclination of the machine frame in a paving direction (12). A slip form mold (24) is supported from the machine frame for molding a mass of concrete (16A) into a formed not yet hardened concrete slab as the paving machine moves forward in the paving direction. A swelling sensor (220) is arranged to detect a swelling of the formed not yet hardened concrete slab relative to the machine frame behind the slip form mold. A method of controlling the slip form paving machine is also disclosed.