Rail Holding Clamp Assembly for Precise Sleeper Installation
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Solution Overview
Problem
Existing rail systems lack sufficient lateral support during installation, leading to frequent slipping and repositioning of rails, which is tedious and time-consuming, especially for long rails with gaps on one or both sides, affecting precise and rapid installation.
Innovation Solution
A rail system with a movably mounted holding device that is pivotally mounted in the support structure, featuring a clamping device with a spreading spring mechanism and interlocking profiles to ensure secure positioning and prevent detachment, allowing for easy assembly and firm fixation without external tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional concrete sleepers with fastening elements are used, then the rail system has established structural support, but the fastening elements create stress concentrations that lead to cracking and reduced service life
Solution Approach 1:
The invention removes traditional fastening elements (clamps, anchors, concrete anchors) from the sleeper structure entirely. The rail is fastened directly to the sleeper body without separate fastening components, eliminating the source of stress concentrations that cause cracking and extend sleeper service life.
Solution Approach 2:
The fastening function is merged into the sleeper body itself. The sleeper incorporates integral fastening features such as recesses, slots, or cavities that directly receive and secure the rail, combining the support and fastening functions into a single unified structure that avoids stress concentrations at fastening element interfaces.
2Reliability
If conventional sleepers with separate fastening components are used, then the rail can be securely attached, but the number of parts increases device complexity and maintenance requirements
Solution Approach 1:
The sleeper and fastening system are merged into a single integrated component. The sleeper contains built-in fastening features such as recesses, slots, or cavities that directly secure the rail, eliminating the need for separate clamps, anchors, and fastening hardware, thus reducing device complexity while maintaining attachment security.
Solution Approach 2:
The sleeper performs multiple functions simultaneously: it provides structural support, acts as the mounting surface for the rail, and incorporates integral fastening features. This multi-functionality eliminates the need for dedicated fastening components and simplifies the overall rail system architecture.
3Ease of manufacture
If wooden sleepers are used, then the sleepers are easier to manufacture and install, but they require frequent replacement due to rot and degradation
Solution Approach 1:
The invention uses concrete or other durable materials to manufacture sleepers that combine the ease of formwork and casting from wooden templates with the superior durability, rot resistance, and structural strength of concrete. The concrete sleepers can be precast using wooden molds, capturing the manufacturing simplicity while achieving long-term durability.
4Reliability
If steel sleepers are used, then the sleepers have high strength and durability, but they are more difficult to manufacture and increase device complexity
Solution Approach 1:
The invention employs concrete sleepers that can be precast using standardized formwork and manufacturing processes. Concrete offers high compressive strength and durability comparable to steel, while being easier to manufacture through precasting techniques. The sleepers can be produced in controlled environments, allowing for consistent quality and integration of fastening features without the complexity of steel fabrication.
Data Source
Figure 1
Figure 2
AI summary
Rail system (1) comprising a rail (20), a support device (10) for the rail (20) and a clamping device (40) for firmly clamping the rail (20) in the support device (10), wherein the clamping device (40) firmly clamps the rail (20) in the support device (10) only in one operating situation, and wherein in the operating situation a holding device (30) is arranged between the clamping device (40) and the rail (20), which releasably clamps the rail (20) in a predetermined position in the support device (10) in an assembly position.