Drop-Frame Trailer Cross-Dock for Floor-Height Goods Transfer
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Solution Overview
Problem
The challenge of transferring goods between vehicles with differing floor heights in cross-docking operations often requires additional infrastructure or human intervention, leading to inefficiencies and potential obstacles.
Innovation Solution
A mobile cross-dock system with a drop-frame trailer featuring adjustable deck heights and a conveyor system that aligns with vehicle floor levels, allowing seamless transfer of goods without the need for additional equipment or manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the mobile cross-dock floor height is higher than the vehicle floor height, then the structural stability of the mobile cross-dock is improved, but additional infrastructure or human intervention is required to prevent objects from falling during transfer
Solution Approach 1:
The mobile cross-dock employs an adjustable height platform that can dynamically change its elevation. The platform transitions between a raised position (for structural stability and cross-docking operations) and a lowered position (aligned with vehicle floors for safe object transfer). This dynamic adjustment eliminates the need for permanent additional infrastructure while maintaining stability during operations.
Solution Approach 2:
The system changes the height parameter of the platform to resolve the contradiction. By adjusting the platform height to match the vehicle floor level during transfer operations, the system prevents objects from falling without requiring additional infrastructure. The height parameter is modified based on operational requirements.
2Stability of the object's composition
If the mobile cross-dock floor height is higher than the vehicle floor height, then the structural stability of the mobile cross-dock is improved, but human intervention is required to transfer objects safely
Solution Approach 1:
The adjustable height platform automates the height adjustment process, eliminating the need for manual human intervention. The platform automatically lowers to align with vehicle floors and raises to its operational height, enabling automated object transfer while maintaining structural stability during cross-docking operations.
Solution Approach 2:
The system automatically modifies the height parameter of the platform based on operational mode. During vehicle loading/unloading, the platform automatically adjusts its height to match the vehicle floor level, enabling automated object transfer without human intervention while preserving structural integrity.
3Reliability
If additional infrastructure is used to transfer objects between different heights, then object safety during transfer is improved, but the device complexity and cost increase
Solution Approach 1:
Instead of using complex fixed infrastructure like ramps or elevators, the system employs a single dynamic platform that adjusts its height. This movable platform provides object safety by aligning with vehicle floors during transfer, eliminating the need for complex permanent infrastructure while maintaining reliability.
Solution Approach 2:
The system changes the height parameter of the platform to match vehicle floors during transfer operations, ensuring object safety without requiring additional complex infrastructure. The parameter adjustment is achieved through mechanical height adjustment mechanisms integrated into the mobile cross-dock.
4Reliability
If manual intervention is used to transfer objects between different heights, then object safety is improved, but productivity and transfer speed decrease
Solution Approach 1:
The adjustable height platform enables automated object transfer by aligning with vehicle floors, eliminating slow manual handling. The platform's dynamic height adjustment allows rapid positioning, significantly increasing transfer speed while maintaining object safety through automated control.
Solution Approach 2:
The system automatically adjusts the platform height parameter to match vehicle floors, enabling high-speed automated object transfer. This eliminates the time-consuming manual intervention process while ensuring object safety through precise automated height control and alignment.
Data Source
AI summary
A mobile cross-dock includes a drop-frame trailer including: a first deck having a first height above the ground; a second deck having a second height above the ground that is greater than the first height, the second deck being located in a front portion of the trailer above a coupler assembly; side doors arranged on at least one longitudinal side wall of the drop-frame trailer; a back door on a back-end of the drop-frame trailer; a nose door on a front-wall of the drop-frame trailer; and a conveyor mounted longitudinally within the drop-frame trailer and extending from the back door towards the nose door.