Concrete Casting Nozzle Vertical Vibration Design
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Solution Overview
Problem
Existing concrete casting apparatuses face issues with stiff concrete mixes sticking to the nozzle, obstructing the flow and reducing casting speed due to compaction within the nozzle.
Innovation Solution
The apparatus employs a vibrator assembly within the nozzle that transitions from horizontal to vertical vibrating motion, enhanced by protrusions and serrated surfaces, ensuring only vertical vibration to improve concrete mix flow, and incorporates rotatable eccentrics for increased vibratory force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If horizontal vibrating motion is used in the nozzle, then concrete mix is compacted, but stiff concrete mix sticks to the nozzle inner surfaces and obstructs flow
Solution Approach 1:
The patent inverts the conventional horizontal vibrating motion by using vertical vibrating motion instead. This inversion prevents the concrete mix from sticking to the nozzle inner surfaces while still achieving proper compaction, thereby eliminating the flow obstruction problem and maintaining casting speed.
Solution Approach 2:
The patent changes the vibration direction parameter from horizontal to vertical. This parameter change fundamentally alters how the concrete mix is treated during compaction, preventing adhesion to the nozzle walls while maintaining the compaction effect, thus resolving the contradiction between reliable compaction and sustained casting speed.
2Productivity
If vertical vibrating motion is used in the nozzle, then concrete mix flow is enhanced and nozzle blockage is prevented, but vibratory force must be increased
Solution Approach 1:
The patent employs mechanical vibration through a vibrator assembly with eccentric weights that generate vertical vibrating motion. This mechanical vibration enhances concrete mix flow through the nozzle and prevents blockage of stiff concrete mixes while providing sufficient vibratory force through the eccentric mechanism design.
Solution Approach 2:
The vertical vibrating motion creates dynamic phase changes in the concrete mix flow, transforming it from a static or horizontally vibrating state to a vertically dynamic state that enhances flow characteristics and prevents adhesion, thereby achieving both improved flow and sufficient vibratory force.
3Productivity
If protrusions and serrated surfaces are added to the vibrator assembly, then concrete mix flow is enhanced, but device complexity increases
Solution Approach 1:
The patent applies local quality modifications by adding protrusions and serrated surfaces only in specific areas of the vibrator assembly where they are most effective for enhancing concrete mix flow. This localized approach improves productivity without requiring complete redesign of the entire vibrator assembly, thus limiting the increase in device complexity.
Solution Approach 2:
The vibrator assembly is segmented into functional components including the vibrator body, protrusions, and serrated surfaces. This segmentation allows each component to perform its specific function optimally while maintaining overall system manageability and reducing the perceived complexity by breaking down the vibrator assembly into distinct functional elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration prevents nozzle blockage, enhances concrete mix flow, and maintains casting speed by effectively handling stiff concrete mixes through vertical vibration and optimized nozzle design.
Implementation Method 1
the concrete mix is vibrated with a vibrator assembly located at least partially in the area inside a nozzle of the casting apparatus, wherein the concrete mix is vibrated in the area inside the nozzle with the vibrator assembly performing only vertical vibrating motion
Data Source
AI summary
A method and an apparatus for casting concrete products by mold casting, where concrete mix is fed in a casting mold from a casting apparatus moved above the mold, and the concrete mix is vibrated with a vibrator assembly located at least partially in the area inside a nozzle of the casting apparatus, wherein the concrete mix is vibrated in the area inside the nozzle with the vibrator assembly performing only vertical vibrating motion.