Rail Fastening Spring Adjustment Mechanism
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Solution Overview
Problem
Conventional railway rail fastening systems face challenges in maintaining the pinch point of the rail pad during transverse adjustment, leading to alterations in the pinching quality due to the dependency on stop position and lag screw placement.
Innovation Solution
A rail fastening system featuring a spring mechanism with an adjustment device that maintains constant contact with the rail's lateral edge, utilizing a support and anchoring system with a sliding interface to ensure the spring's position remains unchanged during adjustment, thereby maintaining consistent pinching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the stop position is adjusted to change rail position, then the rail can be positioned laterally, but the spring position changes and pinching quality deteriorates
Solution Approach 1:
The device is divided into independent functional modules: the stop (70) for lateral positioning, the spring means (30) for pinching, and the support means (50) that couples them. This segmentation allows the stop to adjust rail position independently while the support means maintains spring position stability, resolving the contradiction between adjustability and pinching quality.
Solution Approach 2:
The support means (50) acts as an intermediary element between the stop (70) and the spring means (30). It absorbs the lateral movement of the stop and prevents this movement from being transmitted to the spring, thereby maintaining consistent pinching quality while allowing rail position adjustment.
2Adaptability or versatility
If the lag screw position is fixed, then the spring position is determined, but rail position adjustment becomes limited
Solution Approach 1:
The support means (50) is designed with movable elements including a movable support portion (53) that can shift laterally. This dynamic capability allows the system to adapt to different rail positions while maintaining spring function, increasing adjustability without proportionally increasing complexity.
Solution Approach 2:
The support means (50) performs multiple functions simultaneously: it anchors the spring means to the crosspiece, allows lateral adjustment of the stop, and maintains spring position stability. This multi-functionality reduces the need for separate adjustment mechanisms, managing device complexity while enhancing adaptability.
3Ease of operation
If the stop is equipped with ramps for adjustment, then rail position can be modified, but the spring position is altered and pinching quality changes
Solution Approach 1:
The adjustment function is extracted from the spring mounting system and placed in the stop mechanism. The stop (70) with its movable support portion (53) handles all lateral adjustment, while the spring means (30) remains isolated from adjustment movements, ensuring consistent pinching quality regardless of rail position changes.
Solution Approach 2:
The support means (50) is designed to cushion and absorb the effects of lateral adjustments before they can affect the spring position. The movable support portion (53) and its connection mechanisms pre-compensate for position changes, maintaining pinching consistency throughout the adjustment range.
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 system effectively maintains the rail's position and pinching quality during transverse adjustment, preventing alterations in the pinching action and ensuring reliable rail fixation.
Implementation Method 1
a spring means (30) capable of bearing on the upper face of the slider (2a) of the rail (2)
Implementation Method 2
a means (9) for adjusting the position of the support means (7) relative to the anchoring means (8), comprising a cooperation interface (9b) causing the sliding of the support means (7) with respect to the anchoring means (8)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a system (1) for securing a rail (2) by pinching the rail, comprising: a spring (3) bearing on the rail base (2a), a means (5) for securing the spring to a structure (4) carrying the rail, characterized in that the spring means bears against a device (6) for adjusting the spring comprising: a means (7) for supporting the spring, intended to be in contact with an edge of the rail, the spring being unable to move in translation with the support means, a means (8) for anchoring to the structure supporting the rail, a means (9) for adjusting the position of the support means with respect to the anchoring means.