Rail Fastening Cover Cap Segmentation for Position Stability
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Solution Overview
Problem
Existing fastening points for rail vehicles, especially in urban areas, face challenges in ensuring reliable and easy installation while maintaining the elastic hold-down force and minimizing noise emissions, particularly when embedded in filling materials like concrete or gravel, where the spring elements need protection from the surrounding environment.
Innovation Solution
A device comprising a covering cap with a recess to accommodate the spring element's movements, combined with a separate holding part that provides precise positioning and secure seating for the covering cap, allowing it to be fixed independently of the fastening point's components, ensuring the spring element remains shielded from environmental contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the cover cap is placed over the spring element to shield it from the environment, then the spring element is protected from environmental contact, but the cover cap may shift position unintentionally during operation
Solution Approach 1:
The device is divided into two separate components: the cover cap (2) and the retaining part (3). This segmentation allows the cover cap to be positioned independently for protection while the retaining part provides stable anchoring to the substrate, preventing unintentional shifting during operation.
Solution Approach 2:
The retaining part (3) acts as an intermediary element between the cover cap (2) and the substrate (U). It provides a stable mounting basis that prevents the cover cap from shifting while allowing the spring element to move freely within the cover cap's recess.
2Reliability
If the cover cap is fixed to the spring element or fastening point components, then position stability is improved, but installation complexity and dependency on other components increase
Solution Approach 1:
By separating the cover cap from the spring element and fastening point components, the device allows independent installation of the cover cap on the retaining part. This eliminates the need to fix the cover cap to other components, simplifying installation while maintaining position stability.
Solution Approach 2:
The retaining part (3) is designed to be self-sufficient as a mounting basis for the cover cap (2). It provides its own anchoring to the substrate without requiring additional fastening operations or dependencies on other fastening point components.
3Ease of operation
If the cover cap is designed to accommodate spring element movements freely, then the spring element can oscillate without restriction, but the cover cap may be displaced by lateral forces from filling material
Solution Approach 1:
The separation of the cover cap (2) from the substrate through the retaining part (3) creates an independent protective enclosure. The cover cap can accommodate spring element movements freely while the retaining part resists lateral forces from filling material, preventing displacement of the entire assembly.
4Ease of operation
If the device is designed for easy installation on uneven surfaces, then installation simplicity is improved, but positioning precision may be compromised
Solution Approach 1:
The retaining part (3) provides its own self-leveling and self-positioning functionality on uneven surfaces through its geometric design and contact with the substrate. This self-service capability ensures both easy installation and precise positioning of the cover cap without requiring additional adjustment operations.
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
The solution enables reliable and easy installation of the covering cap, maintaining the elastic hold-down force and reducing noise emissions, even on uneven surfaces and in varying filling materials, by providing a secure and precise fit that withstands high loads and facilitates maintenance.
Implementation Method 1
a spring element that exerts an elastic holding force on the rail
Implementation Method 2
a cover cap which is provided to be placed over the spring element in order to shield the spring element from the environment
Implementation Method 3
the cover cap is positioned precisely by means of a positive locking connection with the holding part
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a device for covering at least one component (F, S, P) of a mounting point (B) for a rail (S) of a rail vehicle on a substrate (U). The mounting point (B) comprises a spring element (F) that exerts an elastic holding force on the rail (S), and the device (1) includes a cover cap (2) which can be placed over the spring element (F) to shield it from the environment, such that the spring element (F) sits in a recess (4) of the cover cap. This recess is dimensioned such that the spring element (F) can freely follow the movements of the rail during use.To enable the correct orientation of such a device and to ensure the function of the fastening point even when embedded in a filling material (M), the invention proposes that the device (1) additionally comprises a holding element (3) that can be handled separately from the cover cap (2), is arranged in the area of the spring element (F), and has at least one shaped element (14, 15, 16, 17) that serves as a stop for precise positioning of the cover cap (2) on the holding element (3). The invention also relates to a correspondingly designed rail fastening point.