Slip Form Paver Inclination Control for Concrete Roll Size
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Solution Overview
Problem
The formation of a 'roll' of not yet hardened concrete material in front of the oscillating beam during slip form paving poses a challenge, necessitating improved monitoring and control mechanisms.
Innovation Solution
A slip form paving machine equipped with a roll size sensor to detect the size of the roll, a controller to adjust the machine's longitudinal inclination, and actuators to adjust the lifting columns to counteract deviations in roll size, ensuring precise control of the concrete slab formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the longitudinal inclination of the machine frame is adjusted to reduce roll size, then the roll size decreases, but the productivity may be reduced due to slower paving speed
Solution Approach 1:
The machine frame's longitudinal inclination is made dynamically adjustable during the paving process. The controller continuously monitors roll size sensor data and automatically adjusts the inclination angle in real-time, allowing the system to adapt to varying concrete flow conditions while maintaining optimal paving speed and productivity.
Solution Approach 2:
The system changes the physical parameter of the machine frame's longitudinal inclination angle to control roll size. By varying this parameter based on sensor feedback, the system can reduce roll size when necessary without requiring fundamental changes to the paving process or equipment.
2Stability of the object's composition
If the longitudinal inclination is frequently adjusted to maintain roll size, then the roll size remains consistent, but the device complexity increases due to additional sensors and control systems
Solution Approach 1:
A feedback control loop is implemented where the roll size sensor continuously monitors the actual roll dimensions and sends data to the controller. The controller compares this feedback with the desired roll size parameters and automatically adjusts the machine frame inclination to maintain consistency, creating a self-regulating system that reduces roll size variability without requiring complex manual intervention.
Data Source
AI summary
A slip form paving machine includes a machine frame, a plurality of ground engaging wheels or tracks, and front and rear height adjustable lifting columns 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. A slip form mold is supported from the machine frame for molding a mass of concrete into a formed not yet hardened concrete slab as the paving machine moves forward in the paving direction. An oscillating beam is supported from the machine frame behind the slip form mold for engaging and oscillating transversely to the paving direction upon an upper surface of the formed not yet hardened concrete slab to smooth the upper surface. A roll size sensor is configured to detect a size of a roll of not yet hardened concrete created in front of the oscillating beam.