Rail Vehicle Undercarriage Adapter Rocker for Sensor Mounting
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Solution Overview
Problem
Rail vehicles with internally mounted bogies face challenges in arranging train protection sensors and pantographs near the rail top edge due to spatial constraints and interference with wheel pairs, limiting their interaction with external track components.
Innovation Solution
A running gear design featuring an adapter rocker connected to the chassis frame with low longitudinal rigidity, allowing relative movements between the chassis and wheels, enables the placement of components like train protection sensors and pantographs, ensuring compatibility with vertical adjustments and minimizing interference with other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If internally mounted bogies are used, then space utilization is improved, but train protection sensors cannot be arranged near the rail top edge
Solution Approach 1:
The bogie frame is segmented into a main bogie frame and a separate adapter rocker that can be independently positioned. This segmentation allows the adapter rocker to extend beyond the wheel pairs and provide mounting positions for train protection sensors near the rail top edge, while the main bogie frame remains internally mounted for space efficiency.
Solution Approach 2:
The adapter rocker acts as an intermediary component between the internally mounted bogie frame and the train protection sensors. It provides the necessary extension and mounting surface to position sensors near the rail top edge without requiring the entire bogie to be externally mounted, thus resolving the contradiction between space utilization and sensor arrangement capability.
2Shape
If internally mounted bogies are used, then structural compactness is improved, but pantograph connection to rail infrastructure is hindered
Solution Approach 1:
The pantograph mounting function is segmented from the main bogie frame and placed on the extended adapter rocker. This allows the main bogie to remain compact and internally mounted, while the adapter rocker provides the necessary reach and positioning for pantograph connection to the rail infrastructure.
Solution Approach 2:
The adapter rocker extends the mounting capability in a longitudinal direction beyond the wheel pairs, creating a new dimensional space for pantograph attachment. This dimensional extension allows pantograph connection without compromising the vertical compactness of the internally mounted bogie structure.
3Stability of the object's composition
If adapter rocker is rigidly connected to chassis frame, then structural stability is improved, but relative movements between chassis and wheels are restricted
Solution Approach 1:
The connection between the adapter rocker and the chassis frame is made dynamic rather than rigid, allowing relative movements between the chassis and wheels while maintaining structural stability. This dynamic connection enables the adapter rocker to move independently to accommodate wheel suspension movements while keeping the overall structure stable for sensor and pantograph mounting.
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a chassis for a rail vehicle, wherein the chassis comprises at least one chassis frame (1) and at least one internally mounted first pair of wheels (14). To create advantageous design conditions, it is proposed that an adapter swing arm (8) be arranged on at least one outer side of the chassis, pivotally connected to the chassis frame (1) and a first wheel (2). This offers the advantage that interface components such as pantographs or train protection sensors, etc., can be arranged near railway infrastructure, thus facilitating interaction of these interface components with train protection devices located outside of tracks, for example, in a track bed.