Catenary Lifting Assembly With Vertical and Lateral Adjustment
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Solution Overview
Problem
Existing hydraulic lifting devices for railway overhead lines are not universally available on all railway construction vehicles, leading to inefficiencies and increased costs for equipping intervention teams, and existing devices lack the ability to perform precise adjustments perpendicular to the overhead line for maintenance and assembly tasks.
Innovation Solution
A lifting device with a horizontal support plate that can be mounted on support struts or lifting platforms, featuring a vertically movable support element and horizontal arms, allowing manual or actuated movement, and equipped with retaining elements for secure cable lifting and stabilization, suitable for various cross-sections and shapes, including curved sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hydraulic lifting devices are permanently mounted on lifting platforms of railway construction vehicles, then lifting capability is provided, but availability is limited to vehicles equipped with such devices and cost increases
Solution Approach 1:
The lifting device is extracted from the railway construction vehicle and designed as a standalone unit that can be mounted directly on overhead line support structures. This eliminates the need to equip all construction vehicles with lifting capabilities, reducing costs while maintaining availability wherever overhead lines are present.
Solution Approach 2:
The lifting device is designed with universal mounting capabilities on different support strut types (tubular, I-beam, H-beam) and can be used by any intervention team working on overhead lines, not just those with specialized vehicles. This multi-functionality increases availability without requiring vehicle-specific equipment.
2Ease of operation
If a vertically movable support arm is used to raise and lower the catenary suspension, then lifting capability is achieved, but precise adjustment perpendicular to the overhead line is not possible
Solution Approach 1:
The support structure is segmented into a vertical support element for lifting and horizontal support elements with support arms for lateral positioning. This segmentation allows independent optimization of vertical lifting capability and lateral adjustment capability, resolving the contradiction between ease of vertical operation and versatility of positioning.
Solution Approach 2:
The device transitions from one-dimensional vertical movement to two-dimensional positioning by adding horizontal support elements with support arms that can be adjusted perpendicular to the overhead line. This dimensional expansion provides both easy vertical lifting and precise lateral adjustment capability.
3Adaptability or versatility
If the lifting device is mounted on support struts with different cross-sections, then universal applicability is achieved, but mounting complexity increases
Solution Approach 1:
The mounting bracket is designed with universal adaptability to accommodate different support strut cross-sections (tubular, I-beam, H-beam) through adjustable clamping mechanisms and interchangeable mounting plates, achieving wide compatibility without requiring multiple specialized mounting systems.
Solution Approach 2:
The mounting system uses adjustable parameters such as clamping force, mounting plate orientation, and bracket positioning to adapt to different support strut geometries. This parametric adjustment capability provides universal applicability while keeping the mounting mechanism relatively simple and standardized.
Data Source
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AI summary
Lifting device for carrying out interventions on railway overhead lines, comprising a support plate (1) with a vertical fixed support element (1d) which can be fastened to a support strut (A, A1) of the support structure of a railway overhead line or to a horizontal tubular support on the fixed or liftable work platform of a railway construction vehicle, wherein a vertically displaceable (1v) support element (1e) is guided on said fixed support element (1d), which carries at the upper end a horizontal support element (2), from the ends of which two horizontal support arms (2a) protrude at right angles, wherein said displaceable support element (1e) is movable manually by means of a threaded rod or gear with rack or by means of an electric or hydraulic linear adjustment mechanism (2m), and wherein on each of said support arms (2a) a longitudinally displaceable (2h) sliding, by means of a threaded rod (2i) with a handwheel (2g) or adjusting knob operable,Support element (2b) is mounted.,