Brake Rigging Support Zones for Even Railway Lining Wear
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Solution Overview
Problem
Existing railway vehicle braking systems experience uneven wear of brake linings due to deformations and displacements caused by the transmission of braking forces, leading to inefficiencies and potential mechanical issues.
Innovation Solution
A braking linkage system with a discontinuous bearing surface and strategically positioned support and withdrawal zones that distribute forces evenly across the brake disc, utilizing gaskets, levers, and force transmission rods to maintain optimal contact and reduce wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous bearing surface is used on the braking linkage device, then the force transmission is stable and reliable, but the braking forces cause deformations and displacements leading to uneven wear of the lining
Solution Approach 1:
The bearing surface on the braking linkage device is segmented into discrete support zones rather than being continuous. This segmentation allows the lining to contact the brake disc only at specific localized areas, distributing the braking forces across multiple discrete contact points. This prevents concentration of forces that would cause deformations and uneven wear, while still maintaining reliable force transmission through the distributed support zones.
Solution Approach 2:
Different zones of the braking linkage device are given different functional qualities - support zones provide bearing surfaces for force transmission, while withdrawal zones provide clearance to prevent contact. This local differentiation ensures that forces are applied only where structurally appropriate, preventing deformations in critical areas while maintaining effective braking force transmission at designated contact points.
2Force
If the lining support is positioned away from the transverse central axis of the device, then the braking action is effective, but the force transmission causes deformations and displacements of the brake linkage
Solution Approach 1:
The support zones are positioned asymmetrically relative to the transverse central axis of the device, specifically at locations optimized for effective braking action. This asymmetric positioning allows the lining to apply braking forces effectively while the withdrawal zones provide compensating clearance areas. The asymmetric design enables effective braking without requiring symmetric force distribution, thereby preventing deformations and maintaining linkage stability.
Data Source
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AI summary
The invention relates to a railway braking system for a vehicle, comprising brake rigging and a service and/or parking brake designed to act on at least one braking member of said rail vehicle via said brake rigging, which is provided with at least one device (5) having at least one lining support (37) and at least one lining (38) that is mechanically attached to the at least one lining support, characterized in that said device comprises at least two bearing zones (60) in contact with the at least one braking member, and at least one recessed zone (61) located between the two bearing zones.