Rolling Lifting Assembly for Dual Concrete Panel Trusses
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Solution Overview
Problem
The challenge lies in efficiently lifting and moving large dual panel prefabricated trusses without damaging them, as existing methods are costly and time-consuming due to the need for robust structural attachments to support the weight and adapt to different loading forces, making them less adaptable for floor or roofing applications.
Innovation Solution
A lifting assembly comprising an elongated lifting beam with grasping members, lifting cables, shackles, and wheel assemblies that can be rolled onto the truss surface to position lifting hooks, allowing for secure lifting and tilting of the truss using a crane or winch, with built-in grasping members on the truss ends to receive hoisting hooks, enabling the lifting of heavy dual panel composite trusses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If robust welded steel trusses with structural attachments are used to support the weight of large dual panel prefabricated trusses, then the lifting capacity and structural strength are improved, but the manufacturing cost and time significantly increase
Solution Approach 1:
The patent incorporates lifting eyes and attachment means directly into the truss structure during the manufacturing process, before the truss needs to be lifted. This preliminary integration eliminates the need for adding robust structural attachments later, thereby reducing manufacturing cost and time while maintaining the necessary lifting capacity.
Solution Approach 2:
The truss structure is designed to be self-sufficient by including built-in lifting eyes and attachment means that are integral parts of the truss itself. This self-service approach eliminates the need for separate robust structural attachments, reducing both manufacturing complexity and cost while ensuring the truss can support its own weight during lifting operations.
2Strength
If robust welded steel trusses with structural attachments are used to support the weight of large dual panel prefabricated trusses, then the lifting capacity is improved, but the device complexity increases
Solution Approach 1:
The patent merges the lifting attachment means with the truss structure itself, making the lifting eyes and attachment features integral parts of the truss. This consolidation eliminates the need for separate robust structural attachments, thereby reducing device complexity while maintaining sufficient lifting capacity.
Solution Approach 2:
The built-in lifting eyes and attachment means serve multiple functions: they provide structural reinforcement at critical points and simultaneously serve as attachment points for lifting operations. This multi-functionality reduces the need for additional specialized components, simplifying the overall device while maintaining lifting capacity.
3Reliability
If attachment techniques are used to manufacture framing structures for composite trusses, then the structural support capability is improved, but the manufacturing time and cost increase
Solution Approach 1:
The lifting eyes and attachment means are incorporated into the truss structure during the initial manufacturing process, before the truss is assembled or shipped. This preliminary action ensures structural support capability is built-in without requiring additional time-consuming attachment operations later, thereby improving productivity.
4Strength
If conventional lifting methods are used for large dual panel prefabricated trusses, then the structural support during lifting is improved, but the risk of damaging the truss panels increases
Solution Approach 1:
The patent uses lifting eyes and attachment means as intermediary elements between the lifting equipment and the truss panels. These intermediaries are strategically positioned and integrated into the truss structure to distribute lifting forces evenly, providing structural support during lifting while minimizing the risk of damaging the truss panels.
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 solution allows for safe and efficient lifting of heavy dual panel composite trusses, reducing manufacturing costs and time by providing a versatile and adaptive lifting mechanism that can handle the weight and size of the trusses, making them more adaptable for various applications.
Implementation Method 1
The lifting assembly is rolled on a surface of a generally flat concrete panel to position a plurality of sling lifting hooks for connection to the grasping members
Implementation Method 2
A plurality of lifting cables are attached to the lifting beam for lifting the lifting beam
Implementation Method 3
each wheel assembly has a beam tilting cam thereon
Data Source
AI summary
This invention relates to a process for the lifting of a dual concrete panel composite truss and especially to the process of lifting of a composite truss having a pair of spaced apart prestressed concrete panels. A lifting assembly can be rolled on the surface of a generally flat concrete panel to position a plurality of sling hooks for connection to a plurality of said lifting eye members on the generally flat concrete panel for lifting the concrete panel.