Semi-Trailer Transfer Arrangement for Railway Wagon Loading
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Solution Overview
Problem
Current methods for transferring semi-trailers onto intermodal pocket wagons are complex, expensive, and require significant infrastructure investments, especially for non-cranable semi-trailers, as they necessitate specialized lifting points, cranes, and heavy lift trucks, making them unsuitable for standard railway operations.
Innovation Solution
A transfer arrangement using base and wagon roller beams with hydraulic cylinders and a drive mechanism allows for the vertical lifting and lateral transfer of semi-trailers onto intermodal pocket wagons from a ground location, eliminating the need for large terminal installations and enabling the use of standard wagons, which includes foldable lifting means and a mobile base structure for positioning and guiding the semi-trailer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cranes or heavy lift trucks are used to load semi-trailers onto railway wagons, then the loading capability is improved, but the infrastructure cost and device complexity increase significantly
Solution Approach 1:
A portable transfer arrangement with base roller beams and wagon roller beams acts as an intermediary device between the ground and the railway wagon. This transfer arrangement includes hydraulic lifting means and a drive mechanism that enables semi-trailers to be transferred without requiring cranes or heavy lift trucks, thus reducing infrastructure complexity while maintaining loading capability
Solution Approach 2:
The lifting and transfer functionality is extracted from the terminal infrastructure and integrated into a portable transfer arrangement that can be positioned beside the wagon. This eliminates the need for fixed terminal installations with cranes and heavy lift trucks, reducing both device complexity and infrastructure investment
2Ease of operation
If specialized lifting points and cranable semi-trailers are used, then the loading process is simplified, but the semi-trailer complexity and cost increase
Solution Approach 1:
The transfer arrangement enables semi-trailers to be loaded onto railway wagons using their own wheels and chassis without requiring specialized lifting points or cranable configurations. The base roller beams and wagon roller beams support the semi-trailer body directly, allowing standard semi-trailers to be transferred without modifications, thus reducing semi-trailer complexity while maintaining ease of operation
3Ease of operation
If lateral opening pocket wagons are used for loading, then the loading procedure is simplified, but the wagon weight and cost increase
Solution Approach 1:
A portable transfer arrangement serves as an intermediary loading system that enables lateral loading of semi-trailers onto standard pocket wagons without requiring the wagons themselves to have lateral opening capabilities. The transfer arrangement includes base roller beams for ground-level support and wagon roller beams that can be elevated to match the wagon height, allowing the semi-trailer to be transferred sideways and then lowered into the pocket, thus simplifying the loading procedure while avoiding increased wagon weight and cost
4Productivity
If fixed terminal installations are used, then the loading capacity is improved, but the infrastructure investment increases
Solution Approach 1:
The transfer arrangement is designed as a mobile and adaptable system rather than a fixed installation. The base structure can be positioned beside the wagon, and the roller beams can be elevated and lowered as needed. This dynamic configuration maintains loading capacity while eliminating the need for expensive fixed terminal installations with reinforced ground structures and permanent equipment
Solution Approach 2:
The loading functionality is extracted from fixed terminal infrastructure and consolidated into a portable transfer arrangement. This includes removing the need for fixed lifting equipment, reinforced ground structures, and permanent installations, thereby maintaining loading capacity while significantly reducing infrastructure investment
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
This solution simplifies the transfer process, reduces costs by avoiding expensive terminal installations, and allows for the use of standard wagons, making it more efficient and economically viable for non-cranable semi-trailers, while maintaining the ability to handle semi-trailers with or without a pocket insert.
Implementation Method 1
base roller beams of first lifting means, supported by the ground at the ground location and intended for lifting the semi-trailer by said beams substantially vertically up from the ground
Implementation Method 2
a drive mechanism for transferring the semi-trailer sideways from the base roller beams to the wagon roller beams
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
A transfer arrangement (13) for transferring a semi-trailer (8) onto an intermodal pocket wagon (1) from a ground location beside the wagon, or vice versa, includes base roller beams (15) of first lifting means (15, 20´) supported by the ground at the ground location and intended for lifting the semi-trailer (8) up from the ground, corresponding wagon roller beams (17) of second lifting means (16-18) to be supported by the rail or the ground under the wagon and intended for being elevated to substantially the same height as the base roller beams (15) or for being lowered towards the ground, and transfer means (19) for transferring the semi-trailer (8) sideways from the first to the second lifting means in the elevated condition thereof.