Self-Locking Cable Holder for Secure Overhead Line Fastening
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Solution Overview
Problem
Existing methods for fixing cable ends on cable fixing devices are labor-intensive, prone to loosening, and damage the cable's insulation due to the large diameter of the cables, especially in high-altitude applications where manual bending and tightening are challenging, and lack a uniform standard for bundling.
Innovation Solution
A self-locking cable fastening holder comprising a U-shaped male holder and a female holder with non-return ring teeth and locking threads, along with a locking spring mechanism that allows for easy and secure locking of the cable end, preventing loosening and providing insulation protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual bending and tightening methods are used for cable ends, then labor intensity is reduced, but the cable end becomes prone to loosening and falling off
Solution Approach 1:
The cable holder employs a self-locking mechanism where the locking block automatically engages with the locking rod through spring force, eliminating the need for continuous manual tightening while ensuring the cable end remains securely fixed without loosening
Solution Approach 2:
The cable holder is divided into independent male and female holder components with separate locking mechanisms, allowing each part to perform its specific function (holding or locking) independently, improving both ease of installation and reliability of fixation
2Reliability
If cable ties are used to bundle and fix the cable end, then the cable end is secured, but the cable insulation is damaged due to reduced insulation from metal wire contact
Solution Approach 1:
The cable holder introduces insulating components (insulating layer on male holder, insulating pad on female holder) as intermediaries between the metal locking mechanism and the cable, ensuring secure fixation while preventing direct metal-to-cable contact that would damage insulation
3Reliability
If bolts and nuts are used to connect cable holders, then the connection is secure, but the installation process becomes time-consuming and labor-intensive for single person working at heights
Solution Approach 1:
The traditional bolt-nut mechanical connection system is replaced with a spring-loaded locking block mechanism that automatically engages with the locking rod, achieving secure connection through simple insertion motion without requiring threading, tightening, or multiple fastening operations
4Device complexity
If conventional cable holders are used without self-locking mechanism, then the structure is simple, but the cable end becomes loosened and falls off posing safety hazards
Solution Approach 1:
The locking block is designed to automatically engage with the locking rod through spring force without requiring additional locking operations, providing self-locking functionality that prevents cable end loosening while maintaining relatively simple structural composition
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 self-locking mechanism ensures the cable end is securely fixed without manual effort, reducing the risk of loosening and insulation damage, making it suitable for high-altitude wiring with ease of operation and improved safety.
Implementation Method 1
the other end of the locking block abuts against a locking spring. When the locking rod is inserted from the inlet of the locking hole, the locking spring pushes the locking block to enable the locking thread of the locking block to abut against the non-return ring teeth of the locking rod
Data Source
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AI summary
A self-locking cable fastening holder comprises a U-shaped male holder (21) and a female holder (22). A first cable holding part (211) is arranged at a bent portion of the U-shaped male holder (21). A second cable holding part (221) is arranged at the female holder (22). The first cable holding part (211) and the second cable holding part (221) cooperate to hold a cable. Locking rods (212) are arranged at two sides of the U-shaped male holder (21), and corresponding locking holes (222) are arranged at the female holder (22). A non-return shaft (2121) is arranged at each of the locking rod (212), and a movable locking block (223) is arranged at a side edge of the locking holes (222) and has a corresponding locking thread (2231). The locking block (223) abuts against a locking spring (224) such that the locking spring (224) pushes the locking block (223) against the non-return shafts (2121) of the locking rods (212), so as to limit the locking rod (212) to only move forwards and not in reverse, forming a non-return self-locking mechanism. The U-shaped male holder (21) can only move forwards, and not in reverse, in the female holder (22). When in use, the U-shaped male holder (21) is directly inserted into the female holder (22) and is automatically locked. When opening the lock, the locking spring (224) is pushed to retract the locking block (223), so as to freely remove the U-shaped male holder (21) from the female holder (22). The embodiment is simple in operation and easy to use, and is particularly suitable for use in overhead power line installation.