Truss Assembly Guide Rails with Chain Drive
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Solution Overview
Problem
Existing truss assembly systems are prone to noisy and unreliable operation, and susceptible to interference from construction debris due to conventional threaded rod drive systems.
Innovation Solution
A truss assembly system incorporating a locating assembly with a guide assembly made from low-friction materials, such as poly(amides) or fluorinated poly(alkylenes, and a chain-and-sprocket mechanism for precise positioning, which reduces noise and power consumption while preventing debris interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional threaded rod drive system is used to position stops, then the stops can be positioned at desired locations, but the operation becomes noisy and unreliable
Solution Approach 1:
The patent replaces the conventional threaded rod drive system with a chain-driven locating assembly system. The chain mechanism drives the locating blocks along guide rails, eliminating the noisy and unreliable threaded rod operation while maintaining precise positioning capability. The chain drive system provides smoother operation and reduced mechanical interference.
Solution Approach 2:
The patent introduces guide rails as intermediary elements between the chain drive and the locating blocks. These guide rails provide a controlled pathway that reduces friction and prevents direct metal-to-metal contact, thereby reducing noise and improving operational reliability while enabling precise movement of the locating blocks.
2Reliability
If a conventional threaded rod drive system is used, then stops can be positioned, but the system becomes susceptible to interference from construction debris
Solution Approach 1:
The guide rails serve as protective intermediaries that shield the chain drive mechanism from construction debris. The enclosed or semi-enclosed guide rail structure prevents debris from directly contacting and interfering with the chain and sprocket mechanisms, thereby maintaining reliable operation in construction environments.
Solution Approach 2:
The locating assembly is segmented into distinct components (chain drive mechanism, guide rails, locating blocks) that can be independently maintained and protected. This segmentation allows the sensitive chain drive components to be protected from debris while maintaining their positioning function.
3Use of energy by moving object
If low-friction materials are used in the guide assembly, then noise and power consumption are reduced, but manufacturing complexity increases
Solution Approach 1:
The patent changes the material parameters of the guide assembly by using low-friction materials such as polyamides or fluorinated polyalkylenes instead of conventional metals. This material substitution reduces the coefficient of friction, thereby reducing power consumption and noise during operation of the locating blocks.
Solution Approach 2:
The guide assembly utilizes composite construction combining metal components (for structural strength) with low-friction polymer materials (for reduced friction and noise). This composite approach maintains manufacturing feasibility while achieving the desired reduction in power consumption and operational noise.
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 system provides quieter, more reliable operation with improved positional stability and reduced interference from debris, enhancing the efficiency of truss assembly processes.
Implementation Method 1
A portion of the guide assembly may have a material having a low coefficient of static friction when in contact with steel
Data Source
AI summary
The disclosure generally relates to a locating assembly as a component of a locating table segment for positioning truss segments in a truss assembly system. The system generally includes a plurality of table segments aligned in parallel and adapted to position a series of locating blocks on a top surface of the system/table, where each block is a component of one of a plurality of locating assemblies in the system. The block positions collectively define an outer boundary of a support truss (e.g., as a roofing truss). Once the blocks are moved to their desired position, appropriately sized truss segments are placed within the block-defined boundary and fastened together.