Removable Well Car Hitch Frame for Trailer-Container Flexibility
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Solution Overview
Problem
Traditional well cars configured for intermodal container transport are less efficient when equipped with hitches for carrying semi-trailers, due to added weight and reduced load capacity.
Innovation Solution
A universal hitch intermodal well car system that includes a frame with sockets to engage well car support castings, a hitch for attaching trailers, and decks for holding trailer wheels, allowing conversion between intermodal container transport and semi-trailer transport without sacrificing load capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hitch is permanently installed on a well car for carrying semi-trailers, then the well car can transport both intermodal containers and semi-trailers, but the empty weight increases and load capacity decreases
Solution Approach 1:
The hitch system is divided into separate modular components: a frame assembly with sockets that attaches to the well car, and a removable hitch mechanism that can be installed only when needed for semi-trailer transport. This segmentation allows the well car to remain lightweight for container transport while gaining trailer capability when required.
Solution Approach 2:
The hitch system transitions from a static permanent installation to a dynamic removable configuration. The hitch can be installed by coupling to the frame assembly's sockets when semi-trailer transport is needed, and removed when not needed, allowing the well car to adapt its weight and functionality based on operational requirements.
2Adaptability or versatility
If a hitch is permanently installed on a well car for carrying semi-trailers, then the well car can transport both intermodal containers and semi-trailers, but the load capacity is reduced
Solution Approach 1:
By segmenting the hitch system into removable components rather than a permanent installation, the weight of the hitch structure is only present when actually needed for semi-trailer transport. This maintains maximum load capacity for container transport while providing trailer capability when required.
Solution Approach 2:
The system changes the weight parameter dynamically - the hitch components are absent from the well car during container transport operations, maximizing load capacity, and are installed only when semi-trailer transport is required, thus optimizing the load capacity parameter based on operational needs.
3Weight of moving object
If a hitch system is designed for easy installation without permanent attachment, then the empty weight is reduced, but the complexity of the system increases
Solution Approach 1:
The frame assembly with standardized sockets serves multiple functions: it provides structural support for the hitch when installed, attaches to the well car's existing support castings, and enables easy installation and removal of the hitch mechanism. This multi-functionality reduces overall system complexity despite the removable design.
Solution Approach 2:
The frame assembly acts as an intermediary component between the well car's support castings and the removable hitch mechanism. It provides standardized coupling points (sockets) that simplify the connection process, reducing the complexity of installing and removing hitches while maintaining lightweight design.
Data Source
AI summary
A system for a well car includes a frame, a hitch coupled to the frame near the first end of the frame, and a first deck coupled to the frame. The frame includes a first pair of sockets located near a first end of the frame and a second pair of sockets located near a second end of the frame. Each socket of the first pair of sockets is configured to engage a support casting of a first pair of support castings located at a first position along a length of a well car. Each socket of the second pair of sockets is configured to engage a support casting of a second pair of support castings located at a second position along the length of the well car. The first deck is configured to hold wheels of a trailer when the trailer is coupled to the hitch.