Modular Strut Attachment Device for Reusable Halls
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Solution Overview
Problem
Existing roof and wall construction methods for reusable halls and tents face high production costs and limited flexibility in connecting main struts to cross struts, making the attachment process inefficient.
Innovation Solution
The attachment device features two extension devices with supporting webs and form-fitting means that limit the mobility of the holder on the main strut, providing a simple, flexible, and cost-effective connection method, which can be enhanced with screws or bolts, and includes retaining grooves to prevent tilting and separation, allowing for easy assembly and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If screw connections are used to connect main struts to cross struts, then structural stability is improved, but production costs increase and flexibility in arranging cross struts decreases
Solution Approach 1:
The connection system is divided into separate modular components: attachment devices mounted on main struts, holders attached to cross struts, and interacting form-fitting means. This segmentation allows each component to be manufactured independently using simpler, more cost-effective processes while maintaining structural stability through precise geometric interfacing.
Solution Approach 2:
The holder acts as an intermediary component between the cross strut and the attachment device on the main strut. This intermediary element enables flexible positioning and simple connection without requiring complex screw joints, reducing manufacturing costs while preserving structural integrity through the form-fitting interaction.
2Stability of the object's composition
If screw connections are used to connect main struts to cross struts, then structural stability is improved, but flexibility in arranging cross struts decreases
Solution Approach 1:
The connection system enables dynamic reconfiguration of the framework structure. Cross struts can be easily attached at different positions along main struts by simply mounting holders at desired locations, allowing the structure to adapt to various spatial requirements while maintaining stability through the form-fitting attachment mechanism.
Solution Approach 2:
Attachment devices are pre-mounted on main struts at various positions during manufacturing. This preliminary action enables flexible on-site assembly where cross struts can be quickly connected at different locations without requiring complex drilling or fastening operations, enhancing both flexibility and structural integrity.
3Strength
If U-shaped fastening brackets welded to main struts are used, then connection strength is improved, but device complexity and production cost increase
Solution Approach 1:
The complex welded U-shaped bracket structure is extracted and replaced by simpler attachment devices that achieve equivalent or superior connection strength through form-fitting geometric interfaces. This extraction eliminates unnecessary structural complexity while maintaining connection strength.
Solution Approach 2:
The attachment devices and holders are designed as simple, easily manufacturable components that can be produced at low cost. Rather than using expensive welded metal brackets, the invention employs simpler geometric forms that achieve the required connection strength through precise fitting and interaction mechanisms.
Data Source
Figure 1
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AI summary
The roof or wall structure has a main rod (20) extended in an extending direction (2). A mounting unit has two supporting rods (28,34) extended in the extending direction with mutually facing support surfaces (28a,34a) to both sides of a fixing area (36). A holder is arranged partially in the fixing area by the supporting surfaces. The holder is fixed transversely to the extending direction on the main rod.