Railway Coupler Body Upper Lock Chamber Material Addition

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Solution Overview

Problem

Railroad coupler assemblies often experience jamming in the lock set position due to knuckle and lock interference, which prevents proper knuckle rotation, and existing solutions focus too narrowly on the lock and thrower interface, lacking comprehensive measurement and simulation capabilities.

Innovation Solution

The coupler body is enhanced by adding material to the upper lock chamber's front face, increasing its height and modifying the thrower support surface to improve the lock's position in lock set, allowing for better knuckle rotation without altering the coupler assembly's fundamental design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the focus is only on the lock and thrower interface, then existing solutions can be applied, but comprehensive measurement and simulation capabilities are lacking

Engineering Contradiction:

Improveknuckle rotation reliabilityVSAvoidmeasurement and simulation capability

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention segments the coupler body into distinct regions (upper lock chamber, lower lock chamber, front face) and applies localized material additions to specific segments. This allows targeted modification of the lock chamber area to improve knuckle rotation without requiring comprehensive redesign of the entire coupler assembly, thus improving reliability while managing complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by adding material specifically to the front face of the upper lock chamber where it is most needed to prevent knuckle jamming. This localized modification improves the specific function of knuckle rotation without altering the entire coupler body, resolving the contradiction between improving reliability and avoiding excessive complexity.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If material is added to the upper lock chamber front face, then knuckle rotation is improved, but manufacturing complexity increases

Engineering Contradiction:

Improveknuckle rotation smoothnessVSAvoidcoupler body fabrication

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The invention changes the physical parameter of the coupler body by adding material to the front face of the upper lock chamber. This parameter change (increased material volume in a specific location) directly improves knuckle rotation smoothness while the modification approach remains compatible with traditional manufacturing processes, thus improving ease of operation without significantly complicating manufacturing.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If traditional design methods are used, then existing coupler designs can be maintained, but accurate measurement and simulation of all surfaces is not possible

Engineering Contradiction:

Improvesurface measurement accuracyVSAvoidengineering investigation time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent employs CAD modeling to create a digital copy of the coupler body and its components. This virtual model allows precise measurement and simulation of all surfaces without requiring time-consuming physical measurement and assembly. The digital copy enables engineers to investigate interference issues and test design changes rapidly, resolving the contradiction between measurement precision and time loss.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS8746473B2Railway coupler body improvements to improve knuckle rotation

Publication Date: 2014.06.10 BEDLOE IND LLC

AI summary

An improved coupler body having an area of increased material in the upper lock chamber.