Unitary Multi-Gate Assembly for Railroad Hopper Car Discharge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional railroad hopper cars are too long and require significant space and time to unload cargo due to separate hoppers and large transversely-oriented ridges, limiting the efficiency of cargo discharge and the number of cars that can be loaded on a train.
Innovation Solution
A railroad hopper car design with a single, continuous cargo hopper and a unitary multi-gate closure assembly that spans the length of the car body, featuring multiple cargo discharge openings and a mechanism for simultaneous opening and closing, allowing for quicker and more efficient cargo discharge without the need for a large transversely-oriented ridge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional hopper cars use separate hoppers with transverse ridges, then cargo containment is achieved, but car length increases and unusable space is created
Solution Approach 1:
The patent merges multiple separate hoppers into a single continuous hopper structure, eliminating the transverse ridges that separated individual hoppers in conventional designs. This consolidation maintains the total cargo capacity while removing the unusable space beneath transverse ridges, thereby reducing the overall car length required to achieve the same volumetric cargo capacity.
Solution Approach 2:
The patent introduces longitudinal discharge gates arranged in a line along the length of the car, replacing the conventional transverse arrangement. This dimensional reorganization allows cargo to be discharged sequentially from different longitudinal positions, enabling shorter car length while maintaining cargo capacity and enabling faster unloading operations.
2Productivity
If large gravity outlet cargo discharge gate assemblies are used, then cargo discharge speed increases, but car length increases
Solution Approach 1:
The patent divides the cargo discharge function into multiple smaller gravity outlet gates arranged longitudinally, rather than using one or two large transverse gates. Each gate can operate independently or simultaneously, providing high discharge capacity while occupying less longitudinal space, thus increasing productivity without proportionally increasing car length.
Solution Approach 2:
The patent enables sequential activation of multiple discharge gates along the car length, allowing periodic discharge operations. This periodic action across multiple gates provides continuous high-speed cargo discharge capability, maintaining productivity while distributing the mechanical space requirements along the car rather than concentrating them in one location.
3Adaptability or versatility
If multiple separate discharge gates are used, then cargo discharge flexibility increases, but unloading time increases
Solution Approach 1:
The patent implements periodic action by enabling sequential or simultaneous operation of multiple longitudinal discharge gates. Different gates can be activated in sequence or at the same time depending on the discharge requirements, providing flexibility in discharge patterns while reducing total unloading time through parallel operations across multiple gate locations.
Solution Approach 2:
The patent achieves continuity of useful action by arranging discharge gates longitudinally so that cargo can flow continuously from the hopper through multiple gates in sequence or simultaneously. This continuous discharge path eliminates idle time between gate operations, maintaining adaptability while minimizing unloading time through uninterrupted cargo flow.
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 faster cargo discharge and allows for more cars to be loaded on a train of a given length, improving the use of locomotive power and reducing unloading time, while maintaining the same volumetric cargo capacity as longer cars.
Implementation Method 1
A gravity outlet cargo discharge gate assembly includes a cargo discharge opening that allows cargo to flow out of the hopper car under the force of gravity
Implementation Method 2
A unitary multi-gate closure assembly may include a like plurality of gate closure members connected with each other and movable as a unit, to open or close all of the cargo discharge openings simultaneously
Data Source
AI summary
A railroad hopper car having a single cargo-receiving hopper extending over substantially the length of a car body having a cargo discharge portion occupying most of the available distance between the wheeled trucks supporting opposite ends of the car body. The car has no pair of slope sheets separating longitudinally-adjacent hoppers and defining unusable space beneath the slope sheets, and so the overall length of such a hopper car capable of carrying a desired volume of cargo can be less than that of one with multiple separate hoppers. Cargo discharge openings are arrayed along the length of the cargo discharge portion, and a unitary multi-gate assembly is supported within the cargo discharge portion of the car body so as to be movable longitudinally of the car body to open or close all of the cargo discharge openings simultaneously.