Stabilizing Unit Longitudinal Displacement for Track Uniformity

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Solution Overview

Problem

Existing track stabilization machines face challenges in controlling the stabilizing unit during operations, leading to uneven work results due to prolonged action at the same position during the stopping phase of the tamping machine, causing excessive lowering of the track in certain areas.

Innovation Solution

A machine configuration that allows the stabilizing unit to move continuously forward along the track while the machine frame is moved in steps, utilizing a longitudinal displacement drive and hydraulic drives for flanged rollers, enabling controlled movement and adjustment to prevent excessive lowering by matching the forward motion with the tamping machine's pace.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the stabilizing unit remains stationary during the stopping phase of the tamping machine, then the track is stabilized at that position, but the track is lowered too much in places causing uneven work results

Engineering Contradiction:
Improvestabilization qualityVSAvoidtrack position uniformity
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The stabilizing unit is made dynamically movable along the track via a longitudinal displacement drive during the stopping phase of the tamping machine. This allows the stabilizing unit to continuously advance forward while the tamping machine is stationary, preventing excessive stabilization at any single location and ensuring uniform track lowering across the entire working section.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If the stabilizing unit moves continuously forward, then uniform track stabilization is achieved, but control complexity increases

Engineering Contradiction:
Improvetrack position uniformityVSAvoidcontrol system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

A control system receives signals from a speedometer about the forward motion of the coupled tamping machine and stabilizer. Based on this feedback, the control system automatically adjusts the longitudinal displacement drive to move the stabilizing unit at the appropriate speed, ensuring it advances during the tamping machine's stopping phase while maintaining simple operational control.

Inventive Principle:
Principle #23Feedback

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

This configuration ensures an even work result by preventing excessive lowering of the track in one place, allowing for optimal stabilization and maintaining a consistent track position during tamping operations.

Implementation Method 1

lowers the track into a target position in a controlled way by means of vibrations under vertical load

Methodology Applied
Scientific EffectVibration: Vibration

Implementation Method 2

Each flanged roller 16 is connected to a separate, independently actuatable hydraulic drive 35

Methodology Applied
Scientific EffectHydraulic force: Hydraulic Press

Implementation Method 3

the stabilizing unit 4 is mounted during working operations via flanged rollers 16 on rails 17 of the track 2

Methodology Applied
Scientific EffectRolling: Roller

Data Source

PatentUS10260203B2Machine for stabilizing a track
Publication Date: 2019.04.16 PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN GMBH
  • US10260203B2 patent drawing

AI summary

A machine (1) for stabilization of a track (2) has a machine frame (5), mobile on the track by means of on-track undercarriages, on which a stabilizing unit (4) is arranged which has vertical adjustment drives (6) as well as a vibration exciter (7). The stabilizing unit is designed to be displaceable relative to the machine frame (5) in a longitudinal direction (23) of the machine by means of a longitudinal displacement drive (24).