Railway Sidewall Locking Catch Mechanism

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Solution Overview

Problem

Existing covered freight railway wagons with sliding sidewalls experience inadmissible cross clearance issues, leading to problems with dustiness, water leakage due to rain or snow, despite existing securing methods that are not universally applicable.

Innovation Solution

A locking mechanism featuring a socket adjustably fulcrumed on the sidewall holder, with a locking catch that secures from above or below, utilizing a lever and draw-bar to lock the sidewall against the wagon frame, providing stability without complicating the opening and closing operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If existing securing elements (pin or cog) are added to stabilize sidewall position, then cross clearance is reduced, but device complexity increases and not all securing elements are suitable for all wagon types

Engineering Contradiction:

Improvesidewall closing precisionVSAvoidsecuring mechanism complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The locking catch is designed to be movable along the longitudinal axis of the rotating shaft, allowing it to dynamically adjust its position. The catch can be locked in place by the lever during closing operation, then unlocked and repositioned for different wagon types or adjustment needs, providing both precision and adaptability without permanent complexity

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The securing mechanism is divided into separate functional components: the locking catch that engages with the sidewall holder, the lever that actuates the catch, and the rotating shaft that provides the locking action. This segmentation allows each component to be optimized independently and facilitates adaptation to different wagon configurations

Inventive Principle:

Principle #1Segmentation

2Stability of the object's composition

If securing elements are added to prevent cross clearance, then sidewall stability is improved, but ease of operation deteriorates due to additional securing activities

Engineering Contradiction:

Improvesidewall stabilityVSAvoidopening and closing operation simplicity

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The locking catch functionality is merged with the existing rotating shaft mechanism. The catch rides on the shaft and is actuated by the lever that is already part of the closing mechanism, combining the locking function with the existing structure to prevent cross clearance without adding separate operating steps

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The locking catch is designed to engage automatically with the sidewall holder during the closing operation. The lever, when actuated, automatically positions and locks the catch, eliminating the need for separate manual securing actions while maintaining sidewall stability

Inventive Principle:

Principle #25Self-service

3Manufacturing precision

If a locking catch secured from below is used, then cross clearance is prevented, but the mechanism requires complex adjustment procedures

Engineering Contradiction:

Improvesidewall positioning accuracyVSAvoidmechanism adjustment ease

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The locking catch is designed with universal applicability to different wagon types through its adjustable position on the rotating shaft and its engagement geometry with the sidewall holder. The same basic catch design can be used across different wagon configurations, simplifying manufacturing while maintaining positioning accuracy through adjustment rather than redesign

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

The mechanism effectively secures the sidewall, preventing cross clearance and ensuring stability during wagon operation, applicable to various types of covered freight railway wagons with sliding sidewalls.

Implementation Method 1

a locking catch (1) and a lever (2) with a socket (3), whereby 1 and 2 are connected by means of a draw-bar (4). The lever (2) is through the socket (3) adjustably connected with a rotating shaft (6) and the locking catch (1) fits from above into the opening of a holder (5) firmly connected with the sidewall and it traps a holder pin (5)

Methodology Applied

Scientific EffectMechanical Force: Force

Implementation Method 2

a lever (2) with a socket (3), whereby 1 and 2 are connected by means of a draw-bar (4). The lever (2) is through the socket (3) adjustably connected with a rotating shaft (6)

Methodology Applied

Scientific EffectLever mechanism: Lever

Implementation Method 3

1 and 2 are connected by means of a draw-bar (4)

Methodology Applied

Scientific EffectMechanical Fastening: Mechanical Fastener

Data Source

PatentEP2325066B1Mechanism for locking the sidewall of a railway freight wagon

Publication Date: 2021.01.27 TATRAVAGONKA AS

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AI summary

Mechanism for locking the sidewall of freight railway consists of the locking catch (1) connected through the draw-bar (4) with the lever (2) equipped with the socket (3), whereby the locking catch (1) is created to secure the sidewall from above, or from below, and it is, through the draw-bar (4), lever (2) and the socket (3), connected with the rotating shaft (6) adjustably.