Ballast Track Stabilizing Machine With Periodic Load Control
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Solution Overview
Problem
Existing track stabilizing machines do not effectively increase compaction effectiveness of ballast and lack integrated compaction control for assessing track conditions, particularly under varying ballast and subsoil characteristics.
Innovation Solution
A machine with a control device that periodically changes the load during the stabilizing process, coupled with a vibration exciter, to enhance compaction effectiveness and integrate dynamic compaction control, using sensors to assess track conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a constant load is applied during track stabilizing, then the machine structure is simple, but ballast flowing occurs leading to reduced compaction effectiveness
Solution Approach 1:
The loading device applies a periodically varying load to the track during stabilizing operations. The load magnitude fluctuates between minimum and maximum values over time, creating periodic compression cycles that prevent ballast flowing and enhance compaction effectiveness compared to constant load application.
Solution Approach 2:
The loading device transitions from a static constant load system to a dynamic system where the load magnitude continuously varies. This dynamic load application adapts to prevent ballast flowing while maintaining effective compaction, resolving the contradiction between structural simplicity and compaction performance.
2Productivity
If the load is periodically changed during stabilizing, then compaction effectiveness is improved, but the control system complexity increases
Solution Approach 1:
The control device implements periodic load variation through programmed control cycles. The load is systematically varied between predetermined minimum and maximum magnitudes at controlled intervals, achieving enhanced compaction while maintaining manageable control system complexity through structured periodic operation.
Solution Approach 2:
The control device systematically varies the load parameter over time according to a defined periodic pattern. By controlling the magnitude and timing of load variations, the system achieves improved compaction effectiveness while keeping the control mechanism relatively simple through parameter-based regulation rather than complex mechanical systems.
3Measurement precision
If sensors and evaluation devices are added for compaction control, then track condition assessment capability is improved, but device complexity and cost increase
Solution Approach 1:
Sensors measure track parameters during stabilizing operations and feed this information to an evaluation device. The system uses this feedback to assess track conditions and monitor compaction progress, enabling data-driven control decisions that improve track condition assessment capability.
Solution Approach 2:
The patent replaces purely mechanical or empirical track assessment methods with sensor-based measurement systems. Electronic sensors and evaluation devices substitute for traditional mechanical gauges or visual inspection, providing more precise and objective track condition data while integrating seamlessly into the existing machine architecture.
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 periodic load change improves compaction effectiveness by preventing ballast flowing and provides real-time assessment of track conditions, ensuring optimal compaction even under changing conditions.
Implementation Method 1
The vibration causes the stones in the granular structure to become mobile, to let themselves be shifted, and to rearrange themselves with higher compactness
Implementation Method 2
With new track ballast, so-called ballast flowing occurs under dynamic load. In this state, the ballast stones of the granular structure shift and rearrange themselves with higher compactness. By periodically increasing the load, ballast flowing in the load application area is prevented locally
Data Source
AI summary
The invention relates to a machine for stabilising a track with a ballast bed, comprising a machine frame supported on rail-based running gears and a stabilising unit which can be rolled on rails of the track by means of work unit rollers, and which comprises a vibration exciter for generating a dynamic impact force as well as a loading device for generating a load acting on the track. Therein, the loading device is coupled with a control device for periodically changing the load during a stabilising process. The periodic change of the load alternately influences the near and far range of the load application. This leads to improved compaction effectiveness compared to a constant load.