Track Stabilizer Vibration Exciter Phase Shift Control
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Solution Overview
Problem
Existing track stabilizing machines have intricate structures and complex control systems, making it difficult to adjust the impact force effectively, particularly in varying conditions such as bridges or tunnels.
Innovation Solution
The machine employs a vibration exciter with variably adjustable imbalance masses that can be driven with a phase shift, allowing for precise control of the impact force by canceling out undesired directional components and using separate or common drives for each imbalance mass, enabling optimal energy introduction into the track.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjustable imbalance masses are used to control impact force, then the impact force can be adjusted, but the structure becomes intricate and control becomes complicated
Solution Approach 1:
The patent changes the parameter of phase shift between imbalance masses to control the impact force. Instead of adjusting the mass itself, the system adjusts the phase difference between rotating imbalance masses, which simplifies the control mechanism while maintaining adaptability in impact force adjustment.
Solution Approach 2:
The system uses dynamically adjustable phase shifts between imbalance masses to adapt the impact force in real-time. The control device adjusts the phase relationship between multiple imbalance masses, allowing dynamic control of the stabilizing effect without requiring complex mechanical adjustments.
2Measurement precision
If multiple imbalance masses with separate drives are used, then precise control of impact force is achieved, but the device complexity increases
Solution Approach 1:
The patent combines multiple imbalance masses into a single vibration exciter unit with a common drive mechanism. The control device coordinates the phase shifts between multiple imbalance masses driven by a common source, reducing the number of separate drives while maintaining precise control over the impact force through phased coordination.
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 solution allows for quick and precise adjustment of the impact force, ensuring effective track stabilization by optimizing the phase shift and direction of the impact force, adapting to local conditions and simplifying the control system.
Implementation Method 1
a vibration exciter with rotating imbalance masses for generating an impact force acting dynamically in a track plane perpendicularly to a track longitudinal direction
Data Source
AI summary
The invention relates to a machine for stabilizing a track, including a machine frame supported on on-track undercarriages and a vertically adjustable stabilizing unit designed to roll on rails of the track by means of unit rollers, the stabilizing unit comprising a vibration exciter with rotating imbalance masses for generating an impact force (FS) acting dynamically in a track plane perpendicularly to a track longitudinal direction and a vertical drive for generating a vertical load acting on the track. In this, it is provided that the vibration exciter comprises at least two imbalance masses which are driven applying a variably adjustable phase shift (Δφ1, Δφ2). The invention further relates to a method for operating such a machine.