Movable Trailer Decks for Damage-Free ULD Transport
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Solution Overview
Problem
The transportation of Unit Load Devices (ULDs) is hindered by their unique shape and size variations, leading to damage from improper handling, shifting, and inadequate securing methods, as well as inefficiencies in using standard trailers and trucks, which lack the necessary support and adjustability for ULDs.
Innovation Solution
A trailer system with movable decks and advanced control systems, including actuators and guide mechanisms, allows for precise positioning and secure transport of ULDs, featuring a movable tailgate with rollers and stop devices to prevent shifting and ensure proper support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a forklift is used to load ULDs onto a typical truck trailer, then loading efficiency is improved, but the thin tray-like bottom of ULDs is easily damaged
Solution Approach 1:
The patent introduces a specialized trailer bed with a support structure that acts as an intermediary between the ULD and the transport vehicle. The support structure includes a plurality of support elements that distribute the weight of the ULD across its entire bottom surface, preventing localized stress concentrations that would damage the thin tray-like bottom during loading and transport operations
Solution Approach 2:
The patent changes the physical parameters of the trailer bed by incorporating adjustable support elements that can be positioned to match the specific geometry of different ULDs. This allows the support structure to adapt to varying ULD sizes and shapes, ensuring optimal weight distribution and protection during handling operations
2Reliability
If ULDs are secured using typical tie-down straps, then cargo securing is achieved, but the thin ULD construction is damaged from over-tightening
Solution Approach 1:
The patent introduces protective pads or cushions as intermediaries between the tie-down straps and the ULD body. These protective elements distribute the securing forces across larger surface areas of the ULD, preventing localized stress concentrations that would occur with direct strap contact on the thin-walled construction
Solution Approach 2:
The patent modifies the securing mechanism by using adjustable support elements that can be positioned to provide optimal support at different locations on the ULD. This allows for distributed force application during securing operations, preventing over-tightening damage while maintaining cargo security
3Adaptability or versatility
If standard van-type semi-trailer or flatbed truck is used, then transport capability is provided, but space utilization is inefficient due to unique ULD shapes and sizes
Solution Approach 1:
The patent incorporates adjustable and movable support elements that can be repositioned to accommodate different ULD configurations. The support structure includes elements that can be raised, lowered, or repositioned along the trailer bed to match the specific dimensions and shapes of various ULDs, maximizing space utilization while maintaining transport capability
Solution Approach 2:
The patent creates a universal trailer bed system that can handle multiple types and sizes of ULDs through its adjustable support structure. The same trailer bed can be configured to accommodate different cargo arrangements, making it versatile for various transport needs while optimizing space utilization for each specific load configuration
4Ease of operation
If ULDs are slid into position on prior art trailers, then loading is simplified, but the thin tray-like bottom is damaged from scraping on trailer structure
Solution Approach 1:
The patent introduces a protective interface layer between the ULD bottom and the trailer bed structure. This interface consists of protective pads or cushioning elements that are positioned along the path where ULDs are slid during loading, preventing direct contact between the thin tray-like bottom and the potentially abrasive trailer bed surface
Solution Approach 2:
The patent modifies the surface characteristics of the trailer bed by incorporating protective coatings or cushioning materials that reduce friction and prevent scraping damage. This allows ULDs to be slid into position more easily while protecting the bottom surface from mechanical damage during the loading operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The trailer system effectively prevents damage to ULDs during transport by providing robust support and secure positioning, accommodating various ULD sizes and shapes, and optimizing the use of space for efficient cargo management.
Implementation Method 1
Each actuator may comprise at least one of a hydraulic system, a pneumatic system, and/or an electric system.
Implementation Method 2
Each actuator may comprise at least one of a hydraulic system, a pneumatic system, and/or an electric system.
Implementation Method 3
The movable deck may comprise a plurality of first rollers for engaging and translating cargo.
Implementation Method 4
The movable tailgate may further comprise a plurality of second rollers for engaging and translating cargo when the movable tailgate is in a second position.
Data Source
AI summary
A trailer system may have a first cargo area having a movable deck. The movable deck may be moved by an actuator. The movable deck may include a plurality of first rollers for engaging and translating cargo. And a movable tailgate may close the first cargo area when it is in a first position. The movable tailgate may have a plurality of second rollers for engaging and translating cargo when the movable tailgate is in a second position. The trailer system may have a plurality of movable decks, where each movable deck is coupled and moved by an actuator. Each actuator may comprise at least one of a hydraulic, pneumatic, and/or electromechanical system. The trailer system may further have a set of lower movable decks and a set of upper movable decks. The set of upper movable decks may be coupled to the lower movable decks by actuators.