Rail Vehicle Sliding Step with Segmented Drive Housing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sliding step arrangements for rail vehicles face challenges in winter conditions due to space constraints and susceptibility to temperature extremes, and their integration can weaken the car body structure or expose drive components to harsh weather.
Innovation Solution
A sliding step arrangement with a separate housing for the drive device, which is hermetically separated from the step housing, allowing for independent placement and protection from external elements, optimizing space usage and maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the sliding step arrangement is mounted under the car body, then installation space is available, but the drive components are exposed to harsh weather and extreme temperatures
Solution Approach 1:
The housing is divided into two separate compartments: a first housing for the step mechanism and a second housing for the drive device. This segmentation allows the drive components to be protected from weather exposure while maintaining compact installation under the car body.
Solution Approach 2:
The drive device is extracted from the step housing and placed in a separate second housing. This extraction protects the drive components from harmful external factors such as snow, ice, and extreme temperatures while keeping the overall system compact.
2Strength
If the sliding step arrangement is integrated into the shell construction, then structural integrity is maintained, but installation space is constrained
Solution Approach 1:
The housing is designed as a compact, space-efficient structure that utilizes available installation space under the car body without compromising the shell construction. The separated housing design allows for optimized spatial arrangement.
3Reliability
If the drive device is integrated into the step housing, then device complexity is reduced, but drive components are vulnerable to winter conditions
Solution Approach 1:
The housing is segmented into two functional compartments: the first housing accommodates the step and its guide elements, while the second housing protects the drive device. This segmentation improves reliability in winter conditions while maintaining manageable device complexity.
Solution Approach 2:
The drive device is taken out from the step housing and placed in a separate protected environment. This extraction ensures that drive components are shielded from snow, ice, and extreme temperatures, thereby improving winter resistance.
4Object-affected harmful factors
If a separate housing is provided for the drive device, then protection from weather is improved, but device complexity increases
Solution Approach 1:
The housing structure is segmented into two compartments, providing targeted protection for the drive device while maintaining overall structural efficiency. This segmentation protects against harmful factors without excessive complexity.
Solution Approach 2:
The first and second housings are combined into a single integrated housing structure with an internal partition wall. This merging provides weather protection for the drive device while avoiding the complexity of completely separate housing units.
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a sliding step arrangement (1) for a rail vehicle with a first housing (3) attachable to a car body (2) of the rail vehicle, having a first housing opening (3.1), with a step (4) which is movably mounted in a starting position in the first housing (3) and is movable through the first housing opening (3.1) between the starting position and an end position in which the step (4) protrudes at least partially from the first housing (3), and with a drive device (5) for the step (4) comprising a motor (5.1) and at least one movable connecting element (5.2) which transmits a movement generated by the motor (5.1) to the step (4).To create a sliding step arrangement (1) that occupies as little installation space as possible while simultaneously being sufficiently suitable for winter use, the invention proposes that a separate second housing (6) be provided in which the drive unit (5) is arranged, wherein the interior of the first housing (3) is spatially separated from the interior of the second housing (6). Furthermore, the invention relates to a rail vehicle with such a sliding step arrangement (1).