Mixing Machine Discharge Door Control for Variable Concrete Flow
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Solution Overview
Problem
Existing control methods for the discharge door of mixing machines are inefficient, leading to spillage and scattering due to fixed opening positions and manual operation, which cannot adapt to the varying fluidity of different concrete properties.
Innovation Solution
A system and method that dynamically control the opening degree of the discharge door based on the concrete discharge amount, using a controller to switch between sensing-control positions and a time-control position, where the time-control position's opening proportion is determined by the concrete's strength and slump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed opening positions are used for the discharge door, then the control system is simple, but spillage and scattering occur due to inability to adapt to varying concrete fluidity
Solution Approach 1:
The discharge door opening degree is changed from fixed to dynamic adjustment. The control system dynamically adjusts the opening degree based on real-time detection of concrete discharge amount and properties, allowing the system to adapt to varying concrete fluidity while maintaining reasonable control complexity through automated sensing and control algorithms.
Solution Approach 2:
The opening degree parameter of the discharge door is made variable based on concrete properties. The system detects concrete discharge amount and properties, then adjusts the opening degree parameter accordingly, enabling adaptation to different concrete fluidity conditions while using automated control to manage system complexity.
2Productivity
If manual control of discharge door is used, then the control system is simple, but work efficiency is low and spillage cannot be avoided timely
Solution Approach 1:
The system performs self-monitoring and self-control of the discharge door. Sensors automatically detect concrete discharge amount and properties, and the control system automatically adjusts the opening degree without manual intervention, improving work efficiency and enabling timely response to prevent spillage while maintaining reasonable automation complexity.
Solution Approach 2:
The system implements closed-loop feedback control by detecting concrete discharge amount and properties in real-time, comparing them with target values, and automatically adjusting the discharge door opening degree accordingly. This feedback mechanism improves productivity and enables timely spillage prevention while managing automation level through intelligent control algorithms.
3Productivity
If fixed countdown timing is used for discharge, then the control system is simple, but discharge efficiency is affected and spillage is liable to occur
Solution Approach 1:
The system performs preliminary detection of concrete discharge amount and properties before adjusting the discharge door opening degree. By detecting potential spillage conditions in advance and proactively adjusting the opening degree, the system improves discharge efficiency and prevents spillage without requiring lengthy manual response times, managing control response time through automated real-time monitoring.
Data Source
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AI summary
The present application provides a system and method for controlling an opening degree of a discharge door of a mixing machine, and relates to the field of automatic control. The system includes a controller and a plurality of discharge positions, wherein the controller is configured to switch between the discharge positions according to a concrete discharge amount in a receiving hopper; the discharge positions are used to adjust the opening degree of the discharge door; the discharge positions include sensing-control positions and a time-control position; the sensing-control positions include a fully-closed position and a preset proportion position; the preset proportion position is provided between a middle position and the fully-closed position, the middle position being a conventional half-open position; and the time-control position is provided between the preset proportion position and a fully-open position, and an opening proportion of the time-control position is determined according to a strength and/or slump of concrete to be discharged. The present application can solve the problem of spillage and scattering and improve the concrete discharge efficiency.