Lashing Rail Composite Profile for Vehicle Cargo Stability
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Solution Overview
Problem
Existing lashing rails attached to additional loading floors in vehicles lack sufficient stability and rigidity to effectively absorb forces from lashing elements, as they are typically made of less rigid materials like wood or metal-plastic compounds compared to the vehicle body.
Innovation Solution
The lashing rail design incorporates an elongate base body with both an at least largely open profile for accommodating lashing elements and an at least largely closed profile arranged parallel to it, enhancing overall strength and rigidity. This design, often produced as a single extruded profile from an aluminum alloy, allows for secure attachment to the vehicle body and additional loading floors through adhesive and fastening means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lashing rails are attached to additional loading floors made of wood or metal-plastic composites, then the vehicle loading area is protected and a level loading surface is created, but the lashing rails lack sufficient stability and rigidity to effectively absorb forces from lashing elements
Solution Approach 1:
The lashing rail is constructed as a composite structure combining an aluminum alloy base body with a rigid profile section. The aluminum alloy provides corrosion resistance and weight advantages, while the rigid profile section (with closed or partially closed cross-section) provides the necessary stiffness and strength to absorb lashing forces, effectively compensating for the lower rigidity of the wood or metal-plastic composite loading floor.
Solution Approach 2:
The lashing rail features a differentiated structure where the profile section has a closed or partially closed cross-section specifically at the regions where lashing forces are applied. This local reinforcement provides high rigidity and strength exactly where needed to absorb lashing element forces, while other portions of the rail can remain lighter and more flexible for mounting and adaptation purposes.
2Strength
If screw or rivet connection is used directly to the vehicle body, then a very strong and stable bond is created, but numerous screw or rivet holes are created which are potential points of entry for corrosion
Solution Approach 1:
The invention extracts the fastening function from the lashing rail itself and relocates it to separate fastening elements that attach the entire lashing rail assembly to the vehicle body. This allows the lashing rail to maintain its structural integrity and corrosion resistance while still achieving strong attachment through dedicated fastening points on the loading floor.
Solution Approach 2:
The loading floor (whether original vehicle floor or additional floor) serves as an intermediary component between the lashing rail and the vehicle body. The lashing rail attaches to the loading floor using minimal fasteners or adhesive, and the loading floor itself attaches to the vehicle body, thereby protecting the vehicle body from direct corrosion while maintaining attachment strength.
3Object-affected harmful factors
If adhesive bonding is used to attach the lashing rail to the cargo floor, then corrosion holes are avoided, but removing or replacing the lashing rail becomes difficult or impossible
Solution Approach 1:
The lashing rail assembly is segmented into separable components: the aluminum alloy base body with profile section, mounting flanges, and fastening elements. This segmentation allows the rail to be attached using minimal fasteners or removable adhesive at discrete locations, enabling easy removal and replacement while maintaining corrosion protection through the protected fastening points.
Data Source
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AI summary
The invention relates to a lashing rail (10) for securing cargo to a vehicle by means of lashing elements, wherein the lashing rail (10) can be arranged on a loading area (50) of the vehicle with an elongated base body (11), and wherein the base body (11) has a profile (20) that is at least largely open in cross-section for receiving the lashing elements. According to the invention, the lashing rail (10) further comprises a profile (30) that is at least largely closed in cross-section and is arranged parallel to the at least largely open profile (20).