Rail Vehicle Current Collector Elastic Support System
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Solution Overview
Problem
Existing rail vehicle side current collector systems experience tilting movements and uneven wear due to torsional stresses, leading to increased maintenance needs and costs.
Innovation Solution
An elastic support system with a first and second elastic bearing positioned on opposite sides of the support beam's longitudinal axis, and a floating rocker bearing arranged differently from the connecting line between them, which absorbs torques through radial or axial rigidity, reducing the risk of tilting and allowing for compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed bearing and floating bearing are used to support the support beam, then the support beam can accommodate relative movements, but tilting movements occur causing uneven wear on the contact strip
Solution Approach 1:
The support system is divided into multiple bearing components: fixed bearings at the ends of the support beam and floating rocker bearings at intermediate positions. This segmentation allows each bearing type to perform its specific function - fixed bearings provide stable support while floating rocker bearings accommodate movements without causing tilting, thus resolving the contradiction between adaptability and reliability
Solution Approach 2:
Floating rocker bearings are introduced as intermediary elements between the fixed bearings and the support beam. These intermediary components absorb and compensate for relative movements and torques, preventing them from transmitting tilting forces to the contact strip, thereby maintaining uniform wear while preserving movement accommodation
2Reliability
If the fixed bearing is dimensioned with high torsional rigidity to prevent tilting, then wear uniformity improves, but the bearing size and complexity increase
Solution Approach 1:
The torsional load-bearing function is segmented from the fixed bearing to the floating rocker bearings. This allows the fixed bearing to be designed with lower torsional rigidity and simpler structure, while the floating rocker bearings specifically handle torque compensation, maintaining wear uniformity without increasing overall system complexity
Solution Approach 2:
Floating rocker bearings serve as intermediary torque-absorbing elements that relieve the fixed bearing from high torsional loads. This mediator approach enables the fixed bearing to remain compact and simple while still achieving reliable operation with uniform wear through the torque-compensating action of the floating bearings
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 enhances stability, reduces torsional stresses, and minimizes uneven wear on the current collector contact piece, extending maintenance intervals and lowering maintenance costs.
Implementation Method 1
a first elastic bearing (19) is on a first side of a support plane (12) of a longitudinal axis (13) of the support beam (1) on the support beam (1), and a second elastic bearing (20) is on a second side opposite the first side of the support plane (12) on the support beam (1)
Implementation Method 2
The floating bearing compensates in particular for the relative movements that occur between its mounting location and that of the fixed bearing
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to an elastic support system with at least one support beam (1) and at least one adapter arm (16) for a rail vehicle with at least one car body and at least one bogie (37). It is proposed that a first elastic bearing (19) be arranged on a first side of a support plane (12) of a longitudinal axis (13) of the support beam (1), a second elastic bearing (20) be arranged on a second side of the support beam (1) opposite the first side of the support plane (12), and at least one first rocker bearing (21) be arranged at a position on the support beam (1) other than points on a connecting line (15) between the first elastic bearing (19) and the second elastic bearing (20).This reduces, for example, the uneven wear of a current collector contact strip (36) arranged on the adapter arm (16) caused by tilting movements of the support beam (1) in a support system designed as a current collector.