Rail Vehicle Housing Structure With External Support Arms
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Solution Overview
Problem
Existing support arms for attaching housings to rail vehicle car bodies result in limitations on space utilization and flexibility, particularly in vehicles with limited roof and underbody space, leading to reduced installation height, increased length, or restricted internal width due to their arrangement.
Innovation Solution
A housing design with frame structures and trough-shaped side walls that bear the load, allowing support arms to be positioned outside the housing, reducing the need for internal support arms and minimizing width restrictions, while maintaining load-bearing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If support arms are arranged laterally outside the housing, then the housing can fill previously unused installation space and reduce installation height, but the housing requires greater length along the longitudinal axis
Solution Approach 1:
The support arms are segmented into two separate sections: a first support arm section connected to the housing and a second support arm section connected to the car body. This segmentation allows the support arms to be positioned laterally outside the housing while maintaining compact overall dimensions, resolving the contradiction between maximizing housing volume and minimizing housing length.
Solution Approach 2:
The support arms transition from a single continuous element to a two-section structure that can be positioned in different spatial dimensions. The first section extends laterally from the housing while the second section connects to the car body, utilizing three-dimensional space more efficiently to avoid increasing the housing's longitudinal length.
2Length of moving object
If support arms are arranged laterally inside the housing, then the housing length is reduced, but the internal width is locally limited and flexibility for device arrangement is reduced
Solution Approach 1:
The support arm structure is extracted from the housing interior and repositioned to connect to the car body externally. This extraction removes the support arms from the housing's internal space, eliminating their interfering effect on device arrangement flexibility while maintaining their load-bearing function, thus resolving the contradiction between housing length and adaptability.
Solution Approach 2:
The car body serves as an intermediary structure that receives the second support arm section. By transferring the connection point from the housing interior to the car body, the support function is maintained while the housing internal space is freed for flexible device arrangement, resolving the contradiction between compact length and arrangement flexibility.
3Strength
If continuous support arms are used to bear the housing load, then the load-bearing capacity is sufficient, but the internal width of the housing is restricted
Solution Approach 1:
The continuous support arm is divided into two separate sections connected to different structures (housing and car body). This segmentation allows the support function to be distributed, maintaining load-bearing capacity while removing the physical obstruction from the housing interior, thus resolving the contradiction between strength and internal width.
Solution Approach 2:
The support arm configuration changes from a single interior element to a multi-section structure utilizing external space. The first section connects to the housing while the second section extends laterally to connect to the car body, maintaining load-bearing capacity through spatial redistribution rather than internal placement, resolving the contradiction between strength and internal width.
Data Source
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AI summary
The invention relates to housings for arrangement on the car body of a rail vehicle, wherein the housing comprises a fundamentally cuboid-shaped, closed housing base body with two side walls, two end walls, an upper wall, and a lower wall, wherein the housing base body has an interior space in which electrical, electronic, and/or pneumatic devices can be arranged, is characterized in that it has four support arm sections with a respective mounting area for attaching the housing to supports of the car body, wherein the support arm sections are arranged completely outside the housing base body, and has two frame structures, each made of at least one metal profile, wherein the frame structures are each connected to two of the support arm sections and to edge areas of one of the side walls, the upper wall, and the lower wall, and wherein the frame structures are configuredtogether with the support arm sections, to fully bear the load of the housing body with devices arranged therein, or has two support arms each made of a continuous metal profile, wherein the support arms each form or are connected to two of the support arm sections, wherein the side walls are each made of a metal sheet in a trough shape, wherein a respective trough edge is connected to edge areas of at least the upper wall and the lower wall, wherein the support arms are each arranged on a concave inner surface of one of the side walls facing the interior of the housing and are connected to this side wall, and wherein the side walls are designed to partially bear the load of the housing body with the devices arranged therein.