Rail Joint Welding Alignment With Transverse Rail Displacement
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Solution Overview
Problem
Current mobile welding units for rail joints can only compensate for rail material consumption through longitudinal displacement, limiting their use when replacing old rail joints or inserting intermediate pieces, as transverse displacement is not possible.
Innovation Solution
A device with rail clamping devices coupled to a transverse displacement system, utilizing a hydraulic cylinder and support mechanisms to align rail ends flush for welding, allowing for zero compressive stress and enabling efficient replacement of short rail pieces by compensating material consumption through transverse alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile welding units are used to weld rail joints, then welding can be performed without foreign materials, but the rails must be longitudinally displaced to compensate for material consumption
Solution Approach 1:
The invention introduces transverse displacement capability to the welding device, moving from purely longitudinal adjustment to two-dimensional adjustment. The transverse displacement device with hydraulic cylinder and support device enables the rail ends to be shifted perpendicular to the rail axis, providing an additional degree of freedom to compensate for material consumption without requiring longitudinal rail displacement.
2Force
If rail ends are pressed apart by push rods, then longitudinal tension can be adjusted, but the rail ends cannot be aligned flush for welding
Solution Approach 1:
The invention introduces a transverse displacement device as an intermediary mechanism between the push rods and the welding process. This device, comprising a hydraulic cylinder and support device, mediates the alignment of rail ends by providing transverse displacement capability, ensuring that the rail ends are flush-aligned before welding while maintaining the longitudinal tension adjustment function of the push rods.
3Manufacturing precision
If transverse displacement device with hydraulic cylinder is added, then rail ends can be aligned flush, but device complexity increases
Solution Approach 1:
The transverse displacement device is designed with multi-functionality to reduce overall device complexity. The hydraulic cylinder serves both as the actuator for transverse displacement and as part of the support mechanism. The support device with its support point and guide structure provides both alignment and stability functions, consolidating multiple functions into integrated components rather than separate elements.
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
Enables cost-effective and time-saving rail joint welding, allowing for the replacement of short rail pieces and maintaining desired longitudinal tension, regardless of ambient temperature, by aligning and welding rail ends transversely, thus overcoming the limitations of existing technologies.
Implementation Method 1
the transverse displacement device comprises a hydraulic cylinder for applying a transverse displacement force
Data Source
AI summary
A device for welding a rail joint of a track, comprising two rail clamping devices spaced from one another in a rail longitudinal direction which are connected to one another via push rods to press rail ends apart prior to welding. In this, it is provided that at least one rail clamping device is coupled to a transverse displacement device for flush-aligning the rail ends after being pressed apart.