Angled Rail Tension Clamp Reduces Wear
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Solution Overview
Problem
Existing rail tensioning systems experience excessive abrasive wear and limited ability to exert high spring forces due to the narrow contact area between the holding arms and the rail foot, especially under alternating transverse movements, and face challenges with alignment and wear-induced displacement.
Innovation Solution
A tension clamp design featuring an angled end section that forms a linear contact surface over the rail foot, reducing abrasive wear and allowing for optimal distribution of hold-down forces, with the end section angled to sit linearly on the rail foot's surface, and a holding arm configuration that focuses spring force generation through torsion, minimizing deformation and maximizing elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the end section of the holding arm is angled away from the torsion section to shift the support area toward the rail web, then the rail is held securely with improved operational reliability, but increased abrasive wear occurs in the contact area between the holding arm and rail foot
Solution Approach 1:
The patent changes the geometric parameters of the holding arm by angling the end section relative to the torsion section. This angular parameter modification shifts the support area position and optimizes the contact characteristics between the holding arm and rail foot, achieving both secure rail holding and reduced abrasive wear through optimized force distribution.
2Duration of action of moving object
If the contact area between the holding arm and rail foot is reduced to a narrow support area, then the holding arm can cover maximum spring travel, but excessive abrasive wear occurs especially during alternating transverse movements
Solution Approach 1:
The patent optimizes the contact area parameters by angling the end section of the holding arm. This creates an optimized contact geometry that maintains sufficient contact area to reduce abrasive wear during alternating transverse movements, while preserving the holding arm's ability to cover maximum spring travel through proper dimensional relationships.
3Object-affected harmful factors
If the end section is angled to create line contact over the length of the end section, then abrasive wear is reduced and hold-down forces are optimally distributed, but the tension clamp requires sufficient installation space
Solution Approach 1:
The patent optimizes the geometric parameters of the end section, including its length, angle, and cross-sectional dimensions, to achieve line contact that reduces abrasive wear while minimizing the installation space required. The parameter optimization ensures that the reduced contact pressure and linear contact geometry provide wear protection without excessive space requirements.
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 effectively reduces abrasive wear, ensures reliable hold-down forces even with misalignment or wear-induced displacement, and allows for easy adaptation to different guide plate widths, maintaining secure rail positioning and minimizing stress on the tension clamp.
Implementation Method 1
a tension clamp (1) for fastening a rail (S) with a middle section (3), with at least one torsion section (9, 10) extending laterally from the middle section (3)
Implementation Method 2
at least one torsion section (9, 10) extending laterally from the middle section (3)
Implementation Method 3
the friction surface, which is essential for the frictional resistance opposing a transverse movement of the rail
Data Source
AI summary
A tension clamp (1) for fastening a rail (S), having a central portion (3), having at least one torsion portion (9, 10) which extends in the lateral direction from the central portion (3), having at least one transition portion (7, 8) which adjoins the torsion portion (9, 10), and having at least one holding arm (13, 14) which is connected to the transition portion (7, 8) and of which the end portion (19, 20), which is assigned to the free end of the holding arm (13, 14), is aligned in an angled manner in relation to the torsion portion (9, 10) as seen in a plan view of the tension clamp (1), wherein, on the angled end portion (19, 20) of the holding arm (13, 14), there is formed a support region (21, 22) which extends over the length of the end portion (19, 20), and the end portion (19, 20) is angled in relation to a part (15, 16), which adjoins said end portion, of the holding arm (13, 14) such that, when the tension clamp (1) is in the fully installed state, the support region (21, 22) is supported over its entire length (Le) in a linear manner on the associated surface (O) of the rail foot (F) of the rail (S) to be fastened.