Rail Car Support Frame With Diagonal Load Paths for Continuous Bulk Haulage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rail transport systems for bulk materials are inefficient in terms of labor, energy, and material costs, and pose environmental and aesthetic concerns, with limitations in capacity, energy efficiency, and maintenance requirements, particularly in transporting bulk materials over long distances or in varied terrain.
Innovation Solution
The development of support frames and rail cars with side drive plates and diagonal support members that accommodate drive tires for frictional contact, allowing for efficient force distribution and reduced weight, combined with a rail transport system using drive stations with variable frequency drives and flexible flaps to prevent spillage, enabling continuous troughs for bulk material transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hopper cars are used for bulk material transport, then loading and unloading can be performed, but the batch loading and unloading process is time-consuming and labor-intensive, reducing productivity
Solution Approach 1:
The rail car is designed with a continuous trough structure that allows continuous loading and unloading operations instead of batch processing. The trough can be continuously filled at the loading end and emptied at the unloading end, eliminating the downtime associated with batch operations and achieving continuous material flow throughout the train.
Solution Approach 2:
The train is divided into multiple rail cars coupled together, each with its own loading and unloading capabilities. This segmentation allows different parts of the train to operate independently or in parallel, with some cars being loaded while others are being unloaded, thereby maintaining continuous productivity without requiring the entire train to stop for batch operations.
2Use of energy by moving object
If conventional rail cars without internal drive are used, then energy efficiency is improved, but the support structure requires heavy diagonal support members to handle coupling forces
Solution Approach 1:
The support frame uses diagonal support members strategically positioned only where coupling assemblies are located to handle the specific forces generated at those points. This localized reinforcement provides the necessary structural strength at critical areas without adding unnecessary weight to the entire frame, optimizing the strength-to-weight ratio.
Solution Approach 2:
The diagonal support members are pre-positioned and integrated into the support frame structure before operation. This preliminary structural arrangement ensures that coupling forces are immediately directed to the diagonal members, which are already in place to handle these forces, eliminating the need for heavier reactive bracing and reducing overall frame weight.
3Productivity
If conventional rail transport systems are used, then bulk material transport is achieved, but spillage occurs over curves and varied terrain, requiring additional containment structures
Solution Approach 1:
The rail car trough is designed with flexible side walls that can bend and conform to the track geometry, including curves and varied terrain. This flexibility allows the trough to maintain its enclosed shape and contain the bulk material effectively even when navigating curves or uneven ground, preventing spillage without requiring additional rigid containment structures.
Solution Approach 2:
The support frame and trough structure are designed with dynamic characteristics that allow them to adapt to changing track conditions. The flexible side walls and appropriately designed rigid components work together to maintain structural integrity and material containment during movement over curves and varied terrain, eliminating spillage through dynamic adaptation rather than static rigid containment.
4Strength
If heavy support frames with multiple cross members are used, then structural strength is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts and eliminates unnecessary cross members from the support frame design, retaining only the essential longitudinal side drive plates and minimal transverse connectors needed for structural integrity and drive tire engagement. This simplification reduces the number of parts, lowers manufacturing complexity, and reduces material costs while maintaining sufficient strength through optimized use of remaining components.
Solution Approach 2:
The support frame utilizes composite construction combining longitudinal side drive plates made from high-strength materials with minimal transverse connectors, creating a structurally efficient design. The side drive plates are designed to carry the primary loads and forces, allowing the reduction of less critical transverse members while maintaining overall frame strength through the superior properties of the longitudinal components.
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 enhances the efficiency and reliability of bulk material transport by reducing maintenance costs, improving energy efficiency, and allowing for continuous operation without batch loading, while maintaining a sealed integrity over varied terrain and curves.
Implementation Method 1
side drive plates and diagonal support members that accommodate drive tires for frictional contact
Data Source
AI summary
Support frames and rail cars include first and second side drive plates, first and second cross members connecting the respective ends of the side drive plates, third and fourth cross members connecting the side drive plates at a select distance from the first and second cross members, a coupling assembly situated at the first cross member and adapted to connect another rail car thereto, and first and second diagonal support members connected to the first cross member at an angle sufficient to substantially direct forces from the coupling assembly to the third cross member and side drive plates. The support frames and rail cars may be used for conveying bulk materials on a rail transport system.