Paver Head Assembly for Concrete Surface Finishing
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Solution Overview
Problem
Existing paver heads for concrete screeding machines are ineffective in handling pervious concrete and denser concrete mixes used in road and parking lot construction, as they damage the porosity of pervious concrete and struggle with the stickier consistency of these materials.
Innovation Solution
A paver head assembly with a frame, plow, cylindrical auger, roller, and finish blade, equipped with a hydraulic system and vibration mechanism, allowing for adjustable components and customized rotation speeds to accommodate varying concrete consistencies and porosities, ensuring a smooth finish without sealing air pockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional vibrating finish blade is used to smooth concrete, then the concrete surface is leveled and smoothed, but the porosity of pervious concrete is damaged and air pockets are sealed
Solution Approach 1:
The paver head is divided into multiple functional segments: plow for initial contact, auger for homogenization, roller for smoothing, and finish blade for final leveling. Each segment performs a specific function to achieve surface finishing without using vibration that would seal pores
Solution Approach 2:
Instead of using vibration to work air bubbles out as in conventional blades, this invention uses a series of non-vibrating mechanical components (plow, auger, roller, blade) that physically move and smooth the concrete without creating vibratory motion that would seal pores
2Ease of manufacture
If conventional paver heads are used on denser, stickier concrete mixes for roads and parking lots, then the equipment is simpler, but the concrete cannot be properly smoothed
Solution Approach 1:
The plow makes initial contact with the concrete to level the surface before the auger processes the material. This preliminary action prepares the dense, stickier concrete for subsequent homogenization and smoothing operations
Solution Approach 2:
The auger rotates to dynamically process and homogenize the dense concrete mix, adapting to varying viscosities and consistencies of road and parking lot concrete mixes through rotational motion rather than static contact
3Ease of operation
If manual leveling and smoothing is used for large poured areas, then labor intensity is high and consistency is difficult to maintain, but equipment complexity is avoided
Solution Approach 1:
The paver head combines multiple functions in one assembly: plowing, augering, rolling, and finishing. This multi-functional design handles various concrete types and surface conditions while maintaining consistent results across large poured areas
Solution Approach 2:
The components can be adjusted in position and configuration to adapt to different concrete pour conditions, depths, and desired finish qualities, allowing the same machine to handle varied applications consistently
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
The paver head assembly effectively screeds and trowels a wide range of concrete surfaces, including pervious and denser mixes, maintaining porosity and achieving a consistent, smooth finish across large areas with reduced labor and equipment limitations.
Implementation Method 1
an auger for contacting the concrete to produce a homogeneous surface
Implementation Method 2
the finish blade is provided with a source of vibratory motion, to further work air bubbles and imperfections out of the concrete surface
Implementation Method 3
a roller positioned adjacent the auger for contacting and smoothing the concrete
Data Source
AI summary
This application is for an improved paver head for smoothing and finishing poured concrete surfaces. It includes a strike-off plow for initial leveling of concrete, an auger for mixing and smoothing surface imperfections, a roller for smoothing and leveling, and a finish blade for final surface finishing of a poured concrete surface.