Dropper Suspension Assembly With Cam Lever Positioning
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Solution Overview
Problem
Existing suspension assemblies for overhead electric railway lines face difficulties in accurately mounting droppers to maintain the correct tension or slack in messenger and contact lines, leading to challenges in securing the elongate support and member effectively.
Innovation Solution
A suspension assembly with a securing arrangement comprising a gripping device and a clamping device, where the gripping device has hooks and a cam lever to secure the elongate support, and the clamping device uses springs and clamping mechanisms to securely attach the elongate member, allowing for adjustable and reliable electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual clamps with predetermined length wire ropes are used for dropper installation, then the dropper can be secured to the messenger wire, but it is difficult to mount them in the right place to gain correct support and avoid tension or slack in the messenger or contact lines
Solution Approach 1:
The gripping device incorporates a cam lever mechanism that allows dynamic adjustment of the dropper position along the messenger wire. The cam lever can be moved between different positions to adjust the gripping strength and position, enabling installers to achieve correct support and eliminate tension or slack in the contact lines during installation and maintenance operations.
2Device complexity
If clamps and predetermined length wire ropes are used for dropper assembly, then the dropper structure can be simplified, but difficulties arise in mounting them in the right place to gain correct support
Solution Approach 1:
The cam lever mechanism provides dynamic positioning capability that allows the dropper to be mounted at precise locations along the messenger wire. By adjusting the cam lever position, installers can achieve accurate mounting positions without requiring complex pre-fabricated assemblies with predetermined lengths, thereby maintaining simple device structure while improving mounting position accuracy.
3Ease of manufacture
If traditional securing devices are used, then the installation process can be completed with standard components, but installation time is increased and efficiency is reduced
Solution Approach 1:
The gripping device is segmented into distinct functional components: the main body with hooks for engaging the messenger wire, and the cam lever mechanism for securing and positioning. This segmentation allows for quick assembly and disassembly during installation, enabling installers to work more efficiently while still using standard manufacturing processes for each component.
Solution Approach 2:
The cam lever mechanism enables rapid adjustment and securing of the dropper during installation. The dynamic nature of the cam lever allows for quick positioning and locking, significantly reducing installation time compared to traditional static clamping mechanisms, thereby improving overall productivity without requiring non-standard components.
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 enables easy and adjustable installation of suspension assemblies on existing or new overhead electric lines, reducing installation time, ensuring continuous electrical contact, and providing a fail-safe mechanism with minimal tools required, thus enhancing safety and efficiency.
Implementation Method 1
The urging member may be resilient. The urging member may comprise a spring. The spring may be a compression spring.
Data Source
AI summary
The present disclosure relates to a securing arrangement (102), a suspension assembly (100), and a method. The securing arrangement (102) is for suspending an elongate member (10). The securing arrangement (102) comprises a first securing device (1, 34) for securing an elongate support (6). The securing arrangement (102) further includes a second securing device (30, 44, 70) for securing the elongate member (10). Each of the first and second securing devices (1, 34 and 30, 44, 70) comprises a main part (2, 36, 111), a securing member (15, 117A, 117B, 38, 60) movably mounted on the main part (2, 36, 111), and an urging member (21, 42, 64, 122A, 122B) for urging the securing member (15, 117A, 117B, 38, 60) from a release position to a securing position in which the elongate support (6) or the elongate member (10) are secured by the securing member (15, 117A, 117B, 38, 60).