Pickup Truck Floor Reinforcement Panel for Fifth Wheel Pedestal
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Solution Overview
Problem
The floor of a pickup truck bed above the fifth wheel cross member experiences unacceptable deflection, known as 'oil canning,' due to limited structural support and clearance constraints, which complicates reinforcement while requiring lightweight solutions to meet fuel economy goals.
Innovation Solution
A reinforcement panel with downwardly extending flanges, transversely extending stiffening ribs, and a grid pattern of longitudinally extending ribs is attached to the pickup truck bed floor, avoiding contact with the fifth wheel cross member and enhancing structural integrity without increasing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcement is added to the pickup truck floor above the fifth wheel cross member, then structural strength and stiffness are improved, but the available height is limited due to clearance constraints
Solution Approach 1:
The reinforcement panel extends laterally beyond the edges of the fifth wheel cross member, utilizing the transverse dimension to provide structural support. This dimensional extension allows the reinforcement to achieve sufficient stiffness and strength without requiring additional height, as the lateral overhang creates a broader load-distributing structure that reduces deflection in the floor panel.
Solution Approach 2:
The reinforcement panel includes a central portion and two lateral portions that extend beyond the cross member edges. This segmentation allows different regions of the reinforcement to serve different functions: the central portion provides direct support above the cross member, while the lateral portions extend outward to increase the moment of inertia and provide stiffness without interfering with the fifth wheel pedestal receptacles.
2Stability of the object's composition
If reinforcement is added to the pickup truck floor, then structural stiffness is improved, but weight increases which affects fuel economy
Solution Approach 1:
The reinforcement panel is strategically positioned and shaped to provide stiffness precisely where needed - in the central region above the fifth wheel cross member and extending laterally to resist deflection. The panel's geometry is optimized to achieve maximum structural efficiency with minimum material, concentrating reinforcement in high-stress areas rather than uniformly across the entire floor.
3Strength
If the reinforcement panel extends laterally beyond the fifth wheel cross member edges, then structural effectiveness is improved, but clearance for fifth wheel pedestal receptacles may be reduced
Solution Approach 1:
The reinforcement panel extends laterally in the transverse dimension beyond the edges of the fifth wheel cross member, utilizing the available width space. This lateral extension provides structural effectiveness by increasing the moment of inertia and distributing loads more effectively, while the vertical clearance in the longitudinal dimension is maintained to accommodate the fifth wheel pedestal receptacles.
Data Source
AI summary
A reinforcement panel for the floor of a pick-up truck bed. The reinforcement panel is assembled between the floor of the pick-up truck and a fifth wheel cross member. The reinforcement panel includes transversely extending reinforcing or stiffening ribs. The stiffening ribs resist deflection in the area of the gooseneck ball receptacle.