Central Node Locking for Fast Multi-Strut Framework Assembly
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Solution Overview
Problem
Existing connection systems for rods in frameworks, such as those in aircraft construction, are complex and heavy, requiring multiple fastening elements and long assembly times, and lack a simple and efficient method to interlock multiple rods at a single node.
Innovation Solution
A locking arrangement featuring a central node bearing with mounting ports and actuation pins that allow connection rods to be plugged in from various directions, utilizing toothed locking elements and a central actuation system to switch between locked and unlocked states, enabling easy assembly and disassembly of multiple rods at a single node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fastening elements and interconnecting means are used to connect rods at a node, then the connection is secure and reliable, but the assembly becomes complex and heavy with multiple components
Solution Approach 1:
Multiple separate fastening elements and interconnecting means are merged into a single integrated node bearing with multiple mounting ports. The node bearing consolidates what would otherwise require multiple discrete brackets, holders, and fasteners into one unified component that can accommodate multiple connection rods simultaneously.
Solution Approach 2:
The node bearing is designed as a universal connection element with multiple mounting ports that can accommodate various connection rods from different directions. This multi-functional design replaces the need for multiple specialized fastening elements, each designed for specific directional connections.
2Reliability
If traditional multiple fastening elements are used to secure rods, then the connection is stable, but the assembly weight increases
Solution Approach 1:
Multiple separate fastening elements are combined into a single node bearing structure, eliminating the cumulative weight of multiple discrete components. The integrated design reduces total material usage while maintaining connection stability through the unified structure.
3Strength
If complex interconnecting means are used to affix elements to the framework, then the connection strength is sufficient, but the assembly time and installation costs increase
Solution Approach 1:
The connection system is segmented into modular components: the node bearing with pre-configured mounting ports and the connection rods with corresponding engagement features. This segmentation allows for pre-assembly and standardization, enabling quick installation by simply plugging rods into the node bearing without complex field assembly procedures.
Solution Approach 2:
The node bearing is pre-configured with multiple mounting ports positioned and oriented correctly during manufacturing. This preliminary arrangement of connection points eliminates the need for complex field measurements and adjustments during installation, significantly reducing assembly time.
4Device complexity
If a single central node bearing is used to connect multiple rods, then the assembly is simplified and weight is reduced, but the mechanism for securing and releasing rods must be efficient
Solution Approach 1:
The locking mechanism is designed to automatically engage when connection rods are inserted into the mounting ports. The self-locking feature eliminates the need for separate manual locking operations, allowing workers to simply plug in the rods and have them automatically secured, thereby maintaining ease of operation while simplifying the overall assembly process.
Data Source
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AI summary
A locking arrangement (10) for connecting and interlocking rods at a node within a framework comprises several connection rods (1); and a central node bearing (2) configured to be engaged from different directions by each of the connection rods at respective mounting ports (3) through plugging each connection rod onto a respective mounting port, wherein the central node bearing is configured with at least one locking element (4) at each mounting port to be actuated between a locked state, in which the at least one locking element resides in an outward position and the respective connection rod plugged onto the respective mounting port is clutched to the central node bearing by the at least one locking element, and an unlocked locked state, in which the at least one locking element resides in an inward position and the respective connection rod is released from the central node bearing.