Laterally Opening Hopper Car Gate Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hopper cars face limitations in carrying capacity due to wasted space beneath sloped hopper surfaces and difficulties in discharging sticky materials like dried distillers' grains through standard gates, which require larger discharge openings.
Innovation Solution
A hopper car gate design with laterally opening doors and a drive system that allows for perpendicular movement of doors, eliminating the need for spacing between adjacent gates and enabling larger openings, facilitated by rails and a gear-driven mechanism that synchronizes the opening and closing of adjacent gates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the spacing between adjacent hopper openings is reduced, then the carrying capacity of the hopper car is increased, but the door operation of adjacent gates interferes with each other
Solution Approach 1:
The door movement direction is changed from lateral (parallel to the hopper car length) to perpendicular (across the hopper car width). This dimensional change allows adjacent doors to move in opposite directions without interfering with each other, enabling reduced spacing between hopper openings while maintaining operational independence of adjacent gates
2Productivity
If a larger discharge opening is used, then sticky materials can be discharged effectively, but the gate structure becomes more complex
Solution Approach 1:
The gate structure is divided into multiple sections with individual doors that can operate independently. Each door is supported by its own rail system, allowing the large discharge opening to be segmented into manageable sections while maintaining structural simplicity and operational efficiency
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 design increases cargo carrying capacity, allows for effective discharge of sticky substances by eliminating interference between adjacent gates and enabling larger openings, and simplifies the operation of individual gate doors through a centralized drive system.
Implementation Method 1
At least one gear rack and preferably two gear racks are mounted on the door in a direction parallel to the direction of movement of the door, a shaft extends in a direction perpendicular to the direction of movement of the door, and one or more gears are mounted on the shaft to engage each gear rack
Data Source
AI summary
A hopper car gate for discharging cargo from a hopper car having a length greater than its width. The gate has opposed generally upright side walls and opposed generally upright end walls coupled with the side walls. The coupled walls present a top opening and a bottom opening. A first rail extends between and is coupled with the side walls adjacent the bottom opening. A first door is supported on the first rail and is moveable in a direction that is perpendicular to the length of the hopper car that the gate is joined with between a closed position which blocks the bottom opening and an open position which allows cargo to exit through the bottom opening.