Removable Truck Bed Tail Extension for Material Containment
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Solution Overview
Problem
Haul trucks with dump bodies often experience material loss due to upward sloping bottoms and uneven road conditions, leading to material escape, especially on steep inclines and bumpy roads, as the load is not adequately contained.
Innovation Solution
A removable tail extension for truck beds, comprising a main extension flap and a lower reinforcing flap, forms a sandwich connection to extend the rear edge of the dump body, providing additional support and containment by overlapping the top surface and extending rearwardly and upwardly, with fasteners securing the assembly to prevent material loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the dump body has an upward sloping bottom to facilitate material flow, then loading efficiency is improved, but material containment deteriorates on steep inclines
Solution Approach 1:
The tail extension is divided into two separate flaps (main extension flap and lower reinforcing flap) that can be independently positioned and secured. This segmentation allows the upward-sloping main flap to contain material while the lower reinforcing flap provides structural support without interfering with loading operations.
Solution Approach 2:
The solution adds a vertical dimension to material containment by extending the tail extension upward at an angle. Instead of only horizontal extension, the upward slope creates a three-dimensional barrier that effectively contains material on inclines while maintaining compatibility with the existing upward-sloping bottom design.
2Productivity
If the dump body has an open back for efficient unloading, then unloading speed is improved, but material escape increases on uneven roads
Solution Approach 1:
The tail extension is designed as a removable and adjustable component rather than a fixed structure. Users can install or remove the extension based on road conditions, and adjust its positioning to optimize both material containment on uneven roads and efficient unloading when conditions permit.
Solution Approach 2:
The tail extension acts as an intermediary element between the open back design and material containment requirements. It provides conditional containment - present when needed for material security, removable when not needed for unloading efficiency - thus mediating between conflicting operational requirements.
3Loss of substance
If a fixed tail gate is added to prevent material loss, then material containment is improved, but adaptability to different work conditions deteriorates
Solution Approach 1:
The removable tail extension allows the dump body configuration to dynamically adapt to different work conditions. The extension can be installed when material containment is prioritized and removed when unloading efficiency or other operational factors take precedence, providing flexibility that fixed structures cannot offer.
Solution Approach 2:
The tail extension is designed to be installed only at specific locations and orientations based on work requirements. The local installation approach allows users to apply containment measures only where and when needed, rather than permanently modifying the entire dump body structure.
4Strength
If a reinforced structure is used to withstand loading and impact, then structural strength is improved, but device complexity increases
Solution Approach 1:
The reinforcement structure is segmented into two separate flaps with distinct functions. The main extension flap provides the upward-sloping containment surface, while the lower reinforcing flap specifically addresses structural reinforcement needs. This segmentation allows each component to be optimized for its specific function without requiring a completely complex integrated structure.
Solution Approach 2:
The tail extension utilizes composite construction with the main extension flap and lower reinforcing flap working together as a unified but structurally distinct assembly. This composite approach provides enhanced strength and stiffness while maintaining modularity and relatively simple manufacturing of individual components.
Data Source
AI summary
An extension for a truck bed may include a main extension flap configured to overlap a top surface of the truck bed and extend rearwardly beyond a rear edge of the truck bed and a lower reinforcing flap configured for arrangement below the truck bed and extending rearwardly and upwardly to support the main extension flap, wherein the main extension flap and the lower reinforcing flap are configured to form a removable sandwich connection on the rear edge of the truck bed.