Screed Assembly Temperature Gating for Preset Setting Changes
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Solution Overview
Problem
Existing paving machines face premature wear and damage to screed assemblies due to transitioning from a neutral state to a preset setting before the screed assembly reaches a required temperature, leading to inconsistent performance and potential distortion of components.
Innovation Solution
A system that adjusts the setting of a screed assembly based on temperature data from sensors, preventing adjustments until the components reach a temperature threshold to avoid distortion and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the screed assembly transitions from neutral state to preset setting before reaching required temperature, then the operation time is reduced and productivity is improved, but the components suffer premature wear and damage
Solution Approach 1:
The system performs preliminary heating of the screed assembly components before allowing setting transitions. Temperature sensors monitor the components and only enable setting changes once the required temperature threshold is reached, preventing premature mechanical stress on cold components while maintaining operational efficiency.
Solution Approach 2:
The control system continuously receives temperature feedback from sensors mounted on the screed assembly components. Based on this real-time temperature data, the controller dynamically enables or disables setting adjustments, ensuring components are at optimal temperature before mechanical transitions occur, thus preventing wear and damage.
2Loss of time
If the screed assembly transitions to preset setting before reaching required temperature, then the setup time is reduced, but the frame may be damaged due to thermal stress
Solution Approach 1:
The system implements preliminary temperature conditioning of the frame and screed assembly components before allowing setting transitions. This ensures the frame reaches thermal equilibrium and avoids thermal shock or stress damage that would occur if setting changes were made to cold components.
Solution Approach 2:
The system replaces manual judgment of component readiness with automated temperature sensing and control. Temperature sensors and a controller objectively determine when the frame is ready for setting transitions, eliminating guesswork and preventing damage from premature mechanical adjustments.
3Use of energy by moving object
If the screed assembly operates below required temperature, then energy consumption is reduced, but the performance becomes inconsistent and components wear prematurely
Solution Approach 1:
The control system uses temperature feedback from sensors to determine when the screed assembly has reached optimal operating temperature. Only when the temperature threshold is met does the system enable setting adjustments and paving operations, ensuring consistent performance while avoiding unnecessary energy consumption from prolonged heating.
Solution Approach 2:
The system monitors temperature as a critical parameter and uses it to control the operational state of the screed assembly. By changing the operational parameter (enabling/disabling setting adjustments) based on temperature conditions, the system ensures consistent performance only when thermal conditions are appropriate.
Data Source
AI summary
In some implementations, a controller may receive a command to adjust a setting of the screed assembly. The controller may obtain temperature data from one or more sensor devices of the screed assembly. The controller may determine, based on the temperature data, a corresponding temperature of one or more components of the screed assembly. The controller may selectively cause the setting to be adjusted or preventing the setting from being adjusted based on the corresponding temperature of the one or more components, the setting being adjusted based on determining that the corresponding temperature satisfies a temperature threshold, or the setting being prevented from being adjusted based on determining that the corresponding temperature does not satisfy the temperature threshold.