Rail Air Spring Bellows With Electromagnetic Lateral Rigidity Control
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Solution Overview
Problem
Existing air spring systems for rail vehicles cannot adjust lateral rigidity, which is crucial for damping properties, as it is determined by the material and shape of the air spring bellows and pressure within the system, and cannot be influenced once these parameters are set.
Innovation Solution
Incorporating a circumferential electrical conductor around the air spring bellows' annular wall section, connected to a control device that applies a voltage to generate a magnetic field interacting with a ferromagnetic core section, allowing adjustment of lateral rigidity by varying the current flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lateral rigidity is determined by the material and shape of the air spring bellows and pressure in the working space, then the structural simplicity is maintained, but the lateral rigidity cannot be adjusted once these parameters are set
Solution Approach 1:
The patent applies parameter changes by introducing an electrical conductor that can change the magnetic field parameters within the air spring bellows. By varying the current through the conductor, the magnetic field strength changes, which directly adjusts the lateral rigidity of the system. This allows dynamic adjustment of a key parameter without fundamentally changing the structural design.
Solution Approach 2:
The patent replaces the traditional mechanical adjustment method (changing material properties, shape, or pressure) with an electromagnetic field-based adjustment mechanism. Instead of mechanically modifying the air spring bellows structure or pressure systems, an electrical conductor generates a magnetic field that interactively adjusts lateral rigidity, substituting mechanical adjustment with electromagnetic control.
2Reliability
If the lateral rigidity is increased to improve damping properties, then the damping performance is enhanced, but the resistance to lateral movement becomes excessive
Solution Approach 1:
The patent applies dynamics by making the lateral rigidity adjustable rather than fixed. The magnetic field generated by the electrical conductor can be dynamically controlled to provide varying degrees of resistance to lateral movement. This allows the system to adapt its damping characteristics in real-time, optimizing performance based on operating conditions without being locked into a single rigidity level.
Solution Approach 2:
By changing the current parameter through the electrical conductor, the magnetic field strength is adjusted, which directly modifies the lateral rigidity parameter. This enables continuous adjustment of the force resistance特性, allowing optimization of damping performance while avoiding excessive resistance that would hinder normal lateral movements.
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
Enables precise adjustment of lateral rigidity by controlling the current through the conductor, enhancing the system's resistance to movement perpendicular to the axis, thus improving damping properties.
Implementation Method 1
a control device which is designed to apply a voltage to the circulating conductor in such a way that a current flows through the circulating conductor
Implementation Method 2
this magnetic field interacts with the core section, which can be formed, for example, by the connection part and/or the fastening plate or forms a section of each, and which is formed from paramagnetic or ferromagnetic material. Since this core section is formed from said material, a force is generated due to the magnetic field caused by the current in the electrical conductor
Data Source
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AI summary
An air spring system for rail vehicles (1) is shown and described, comprising a mounting plate (13) designed to be attached to the body (3) of a rail vehicle (1), a connecting part (15) designed to be attached to a chassis part (7) of the rail vehicle (1), an air spring bellows (17) which is connected at a first end (19) to the mounting plate (13) and which is connected at a second end (21) opposite the first end (19) to the connecting part (15), wherein the air spring bellows (17) is connected to the mounting plate (13) and the connecting part (15) such that an airtight working space (29) is formed between the mounting plate (13) and the connecting part (15), wherein the air spring bellows (17) has an annularly circumferential wall section (25), wherein a [missing element] is attached to the circumferential wall section (25) around the wall section (25). circumferential electrical conductor (33) is provided,which is rigidly connected to the wall section (25), wherein the air spring system has a core section made of para- or ferromagnetic material, the projection of which onto the plane (39) in which the circulating conductor (33) extends is arranged within the circulating conductor (33), and with a control device (37) configured to apply a voltage to the circulating conductor (33) such that a current flows through the circulating conductor (33).