Optimization: Toronto Transit Commission Program Design & - - PowerPoint PPT Presentation

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Optimization: Toronto Transit Commission Program Design & - - PowerPoint PPT Presentation

Mar 16, 2023 119 likes •412 views

Wheel/Rail Interface Optimization: Toronto Transit Commission Program Design & Initial Findings 1 TTC WRI OPTIMIZATION Overview Project Background Project Objectives Project Approach Project Work Completed Project

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Wheel/Rail Interface Optimization: Toronto Transit Commission Program Design & Initial Findings

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TTC WRI OPTIMIZATION

Overview

 Project Background  Project Objectives  Project Approach  Project Work Completed  Project Interim Results

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Project Background

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Project Background

 TTC Recognized several opportunities for improvements on its subway and LIM systems

 Wheel life being dominated by the slid flats  Non-optimal lubrication  Rail surface damage on Subway and SRT (Lim System) RCF, Corrugation, Rail Wear  Wheel/Rail Noise

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Project Background Treat the issues as being related instead of treating each separately Attack project as a team with complete participation and active involvement of all departments

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Project Objectives

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  • Project Objectives

 Reduce System Noise  Improve Wheel Life  Minimize and Control Rail Surface Damage  Improve System Lubrication Network

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Project Approach

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Project Objectives:

  • ARM developed a

project based around a systems approach with the Wheel/Rail Interface at its core

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Friction Management Wheel & Rail Profile Design Vehicle & Track Design Grinding & Truing Metallurgy

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  • Project Approach:
  • Inspection of Existing Conditions
  • Education of Staff
  • Measure acoustics across system
  • Assess compatibilities of Wheel & Rail Profiles
  • Evaluate current state of Friction Management
  • Develop a Maintenance & Monitoring Plan

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Don Eadie

System Assessment/Maintenance & Monitoring Wheel/Rail Profile Compatibility System Noise Friction Mgt

ARM Project Team

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Work Completed

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  • Vehicle Inspection

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Axle Alignment Wheel Truing Wheel Condition

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  • Track Inspection

Corrugations Restraining Rail Wear RCF

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  • Lubrication Review

Flange Lubricator Efficacy Reservoir Condition Grease Application

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  • Education

– WRI Principles Course – 4 One Day Classes – Nearly 100 Attendees

Insert Photo(s) From Short Course

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Power/DAQ MIC Radar Speed Laptop

Acoustic Measurement Setup

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Awt, dBA TCI, decibels Speed, kph Distance from Platform, ft 770 Hz  23 mm=0.9” Corrugations Track joints (every 39’)

Example Acoustic Measurements

3K

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Reporting Based on Acoustic Measurements Including Grinding Priority Report

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  • Wheel/Rail Profile Analysis
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  • Wheel/Rail Profile Analysis
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Project Interim Results

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  • Wayside Lubrication Opportunities for

Improvement

– Large reservoir tanks where the grease may sit more than a year – Lubricator placement in curves – Older equipment that lacks accuracy to control grease application compared to current technology

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  • Recommended Gage Face Lubricator Actions

– Standardization of equipment – Proper placement of lubricator in curves

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  • Vehicle Mounted Lubricator Opportunities for

Improvement

– Current mounting locations provide insufficient wheel flange coverage

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Solid Stick Applicator

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  • Recommended Train Mounted Friction

Management

– Solid Sticks Placed Optimally Throughout Trainset

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Solid Stick Applicator

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  • Top of Rail Friction Control

– Reduce rate of RCF occurrence and growth – Reduce rate of corrugation occurrence and growth

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Positive Friction Curve Negative Friction Curve

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  • Acknowledgements

– Toronto Transit Commission – National Research Council Canada – ATS Consulting – Don Eadie

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