Concrete Screed Bar Mount System for Structural Integrity

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing concrete screeds face challenges in maintaining structural integrity while allowing for the attachment of vibrators and bar movers, limiting the length of the screed bar and efficiency in leveling freshly placed concrete.

Innovation Solution

A mount system with a core positioned in the interior region of the screed bar and anchors that secure the bar mover without extending into the interior, facilitating easy coupling and uncoupling and promoting structural integrity, enabling longer screed bars and vibration for efficient concrete leveling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the attachment portion extends into the interior region of the screed bar to secure the bar mover, then the structural integrity of the screed bar deteriorates, but the attachment strength improves

Engineering Contradiction:

Improveattachment strengthVSAvoidstructural integrity

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The attachment system is divided into separate components: the attachment portion remains outside the interior region while the core provides internal reinforcement. This segmentation allows the attachment to secure the bar mover effectively without compromising the screed bar's structural integrity, as the core acts as a separate reinforcing element within the interior region.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The core serves as an intermediary element between the attachment portion and the screed bar interior region. It provides a secure anchoring point for the attachment portion without requiring the attachment to extend into and potentially damage the interior region, thus maintaining both attachment strength and structural integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If the screed bar is made longer to increase productivity, then the structural integrity deteriorates, but the productivity improves

Engineering Contradiction:

Improveleveling efficiencyVSAvoidstructural integrity

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The screed bar is constructed as a composite structure with an interior region containing a core. This composite design allows the screed bar to be made longer for increased productivity while the core provides internal reinforcement that maintains structural integrity throughout the extended length.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The screed bar is segmented into an exterior region and an interior region containing a core. This segmentation allows the interior core to provide structural reinforcement that enables the overall bar to be made longer without compromising integrity, thus improving productivity.

Inventive Principle:

Principle #1Segmentation

3Reliability

If the attachment portion extends into the interior region to secure the bar mover, then the coupling strength improves, but the ease of operation deteriorates

Engineering Contradiction:

Improvecoupling strengthVSAvoidcoupling ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The core acts as an intermediary that provides secure coupling points for the attachment portion without requiring the attachment to extend into the interior region. This maintains reliable coupling strength while keeping the attachment mechanism accessible and easy to operate from the exterior.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of having the attachment portion extend into the interior region to achieve secure coupling, the solution inverts the approach by keeping the attachment portion outside and providing reinforcement from the interior core. This maintains coupling strength while improving ease of operation.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS7651296B2Concrete screed with reinforced screed bar

Publication Date: 2010.01.26 HITACHI KOKUSAI ELECTRIC INC

AI summary

A concrete screed includes a screed bar, a bar mover adapted to move the screed bar over concrete, and a mount coupling the bar mover to the screed bar.