Single-Wheel Knuckle Carrier for One-Person Rail Transport
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Solution Overview
Problem
Existing knuckle carriers for trains are bulky, heavy, and require two persons to carry a 100-pound knuckle over long distances, leading to fatigue and potential injury, while wheeled dollies occupy significant space and are difficult to maneuver.
Innovation Solution
A compact single-wheeled knuckle carrier with a handle, a single wheel, a support plate, and a slidable lock plate to secure the knuckle, allowing easy transport over rough terrain and minimal space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two persons carry a knuckle using a solid straight bar, then the knuckle can be transported over long distances, but the carriers experience fatigue and potential injury due to the full weight plus bar weight
Solution Approach 1:
The carrier divides the load-bearing function between the wheeled support (which carries the knuckle weight) and the handle (which the operator controls). This segmentation allows the operator to maneuver the carrier without supporting the full knuckle weight, resolving the contradiction between ease of operation and weight.
Solution Approach 2:
The wheeled carrier acts as an intermediary device between the knuckle and the operator. Instead of the operator directly carrying the knuckle, they control the carrier which transports the knuckle, reducing physical strain while maintaining transport capability.
2Ease of operation
If wheeled dollies with two wheels and significant support system are used, then the stress on the user is alleviated, but the carrier occupies large space and is difficult to maneuver
Solution Approach 1:
The patent extracts only the essential wheel support function from traditional dolly designs, removing unnecessary structural complexity. The single wheel combined with the frame and handle provides sufficient support while minimizing the carrier's size and simplifying its structure, thus reducing both user stress and device complexity.
Solution Approach 2:
Instead of using a traditional dolly design where the wheel supports are complex and space-consuming, the patent inverts the approach by using a minimal single-wheel configuration where the frame and handle provide the necessary structural support, achieving simplicity and maneuverability.
3Reliability
If traditional two-person tandem carrying method is used, then the knuckle can be transported safely, but it requires significant time and results in fatigue
Solution Approach 1:
The wheeled carrier is designed to be self-supporting for the knuckle weight, requiring only minimal operator effort for maneuvering. This self-service capability allows a single operator to safely transport the knuckle without the fatigue and time loss associated with two-person carrying, while maintaining transport reliability.
Data Source
AI summary
A compact single wheeled knuckle carrier which may be easily stowed and take up minimal space within the engine while simultaneously being easily maneuverable and robust enough to assist a person in carrying a train knuckle over rough terrain and over distance. The compact single wheeled knuckle carrier has a support member that couples the knuckle to the carrier and can include a slide lock to secure the knuckle to the support member. The compact single wheeled knuckle carrier has a pin holder that carries a pin that is used with the knuckle.