Rail Vehicle Wheel Set Intermediate Frame Mounting
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Solution Overview
Problem
The current methods for mounting rail vehicle wheel sets directly on a car body require extensive machining and significant technical effort due to small tolerances and numerous attachment points, necessitating large machining stations.
Innovation Solution
A rail vehicle wheel set intermediate frame with pre-defined mounting interfaces on its underside simplifies the attachment of chassis components, allowing for easier alignment and positioning without the need for extensive machining, as the interfaces are arranged on a compact frame that can be easily integrated with the car body's sub-frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wheel sets are mounted directly on a car body, then the attachment structure is simplified, but the machining requirements become extremely complex due to small tolerances and numerous attachment points
Solution Approach 1:
The patent introduces an intermediate frame as a mediator component between the wheel sets and the car body. This intermediate frame carries multiple mounting interfaces for chassis components (longitudinal follower, suspension, drive suspension, braking device, damping unit) and connects to the car body sub-frame through a single defined mounting interface. This intermediary structure simplifies the overall attachment system while eliminating the need for complex multi-point machining on the car body itself.
Solution Approach 2:
The patent segments the attachment system into two distinct parts: the intermediate frame with multiple mounting interfaces for chassis components, and the single defined mounting interface for connection to the car body sub-frame. This segmentation allows the complex multi-interface assembly to be manufactured separately and then installed as a unit, avoiding the need for comprehensive machining of the car body at multiple locations.
2Adaptability or versatility
If multiple attachment points are created on the car body, then all chassis components can be mounted, but large machining stations and considerable technical effort are required
Solution Approach 1:
The intermediate frame serves as a mediator that consolidates multiple mounting functions into a single attachable unit. It provides mounting interfaces for the longitudinal follower, suspension, drive suspension, braking device, and damping unit, while connecting to the car body through only one defined mounting interface. This eliminates the need for large machining stations that would be required to create and position multiple attachment points directly on the car body.
Solution Approach 2:
The intermediate frame is manufactured in advance with all necessary mounting interfaces for chassis components already positioned and prepared. This preliminary preparation of the attachment structure allows for precise positioning and reduced on-site machining requirements when installing the wheel set assembly on the car body.
Data Source
AI summary
A wheel set intermediate frame for a rail vehicle includes a plurality of mounting interfaces for chassis components at predetermined positions. Part of the wheel set intermediate frame for a rail vehicle is also at least one defined mounting interface for fixing to a subframe of a car body of a rail vehicle. A rail vehicle and a method for producing a wheel set intermediate frame for a rail vehicle are also provided.