Pallet Unloading Platform With Winch for Dock-Free Containers
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Solution Overview
Problem
Existing methods for unloading palletized cargo from intermodal shipping containers require a loading dock, a ramp, or lowering the container to the ground, which are inconvenient and cumbersome.
Innovation Solution
A system comprising a platform with conveyer rollers, a winch, and a hook that attaches to pallets within the container, allowing pallets to be pulled out onto the platform without the need for a loading dock or ramp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a forklift is used to unload palletized cargo from an intermodal container, then the cargo can be efficiently removed, but a loading dock or ramp is required which adds complexity and inconvenience to the operation
Solution Approach 1:
A platform with conveyor rollers is introduced as an intermediary device between the container and the ground. The platform receives pallets from the container via the winch system and automatically conveys them to the ground, eliminating the need for a loading dock or ramp while maintaining forklift-based unloading efficiency
Solution Approach 2:
The unloading system is divided into separate functional components: a winch for extracting pallets from the container, a platform for receiving and conveying pallets, and a forklift for final removal. This segmentation allows each component to perform its specific function optimally without requiring a loading dock
2Ease of operation
If the container is lowered to the ground or a ramp is used to access the container, then the forklift can reach the container doors, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The platform is positioned and leveled adjacent to the container before the unloading process begins. The winch system is pre-configured to extract pallets directly onto the platform, eliminating the need for time-consuming container lowering or ramp setup during the actual unloading operation
3Productivity
If a loading dock is used for unloading, then the forklift can efficiently remove pallets, but the system requires fixed infrastructure that is not always available at delivery locations
Solution Approach 1:
The system uses a mobile platform with adjustable legs for leveling and a winch system that can be deployed at any location with a truck trailer, rather than requiring a fixed loading dock infrastructure. This dynamic setup provides the same unloading efficiency as a loading dock while being adaptable to any delivery location
Solution Approach 2:
The platform serves multiple functions: it acts as a receiving surface for pallets extracted by the winch, provides a conveyor mechanism to move pallets to the ground, and serves as a stable platform for forklift operation. This multi-functionality replaces the need for specialized loading dock infrastructure
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
Enables efficient unloading of palletized cargo from intermodal containers without the need for a loading dock, ramp, or lowering the container, allowing for smooth operation on a truck trailer.
Implementation Method 1
a platform having conveyer rollers, wherein the platform has a proximal edge in contact with the shipping container
Implementation Method 2
a winch positioned on the distal edge of the platform... the cable pulls the pallet from the container onto the rollers of the platform
Data Source
AI summary
A system and method for unloading palletized cargo from an intermodal shipping container is provided, including a platform of conveyer rollers and a winch with a motor and cable connected to a hook. The hook may have prongs with grappling hooks that can be attached to a pallet at the base and can pull the pallet from the container onto the platform where the pallet can be picked up with a forklift. The platform can be adjusted to the height of the floor of the container. The hook may have a V-shape with two arms with grappling hooks at the distal end of each arm and a bolt in the apex to control the spreading of the arms.