Rebar Cage Assembly Machine Carriage Insertion
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Solution Overview
Problem
The construction of large rebar cages is labor-intensive and difficult due to the need for manual handling and insertion of heavy, oversized rebar rods, which increases effort and time in reinforcing concrete and masonry structures.
Innovation Solution
A rebar cage assembly machine with a support frame, axial rollers, and a drive mechanism that assists in rotating and translating rebar rods into cylindrical wire cages, reducing manual labor through controlled insertion and alignment, and includes features like a carriage system, alignment elements, and a discharge mechanism for efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual handling and insertion of rebar rods is used, then direct worker control and flexibility are maintained, but labor intensity and time consumption increase significantly
Solution Approach 1:
The patent introduces a mechanical intermediary system consisting of a carriage, drive mechanism, and rollers that mediate between the worker and the rebar rods. The carriage travels along the cage perimeter and automatically feeds rebar rods through wire loops, eliminating the need for workers to manually handle and insert each rod while maintaining controlled operation through simple mechanical interfaces.
Solution Approach 2:
The assembly machine performs self-service by automatically feeding rebar rods through the wire loops without continuous human intervention. Once a worker positions the initial rebar rod in the carriage, the drive mechanism automatically advances subsequent rods, and the system continues the assembly process autonomously until completion.
2Ease of operation
If manual transportation of rebar rods is performed, then flexibility in positioning is maintained, but physical effort and labor cost increase
Solution Approach 1:
The carriage acts as a mechanical intermediary that transports rebar rods along the cage perimeter. It receives rebar rods from the support frame and delivers them to the insertion point, eliminating the need for workers to physically carry heavy rods manually while maintaining positioning flexibility through the carriage's travel along the cage.
Solution Approach 2:
The support frame and carriage system provide mechanical support that counteracts the weight of rebar rods. The rollers and carriage structure bear the load of the rods during transportation and insertion, reducing the physical effort required by workers to handle heavy materials.
3Productivity
If automated insertion mechanism is implemented, then assembly speed and efficiency improve, but device complexity increases
Solution Approach 1:
The assembly machine is segmented into distinct functional modules: a support frame for storing rebar rods, a movable carriage for transportation, a drive mechanism for propulsion, and rollers for support. This segmentation allows each component to perform a specific function simply, reducing overall complexity while maintaining high assembly speed through coordinated operation of the segments.
Solution Approach 2:
The carriage is designed to be dynamically movable along the cage perimeter rather than a fixed complex mechanism. It travels on simple rails or guides and can be easily repositioned, allowing the system to adapt to different cage sizes and shapes without requiring complex adjustable mechanisms, thus maintaining simplicity while achieving automated insertion.
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 machine significantly reduces the effort and time required to assemble rebar cages, making the process easier, quicker, and less expensive by automating the insertion and alignment of rebar rods within the cage structure.
Implementation Method 1
axial rollers mounted to the support frame for rotatably supporting a cylindrical wire cage for axial rotation
Implementation Method 2
A carriage is movably mounted to the support frame for translation to and fro, with the carriage being adapted for driving an elongate rebar rod in a first axial direction
Implementation Method 3
a drive mechanism is mounted to the support frame for driving the carriage in translation back and forth
Data Source
AI summary
A machine for assembling rebar cages includes a support frame, axial rollers mounted to the support frame for rotatably supporting a cylindrical wire cage for axial rotation about an axis of elongation, a carriage movably mounted to the support frame for translation, with the carriage adapted for driving an elongate rebar rod in a first axial direction. A drive mechanism is mounted to the support frame for driving the carriage in translation back and forth between a retracted position and an extended position for driving rebar rods into the rebar cages for assembly.