Clamp-Type Line Post Insulator With Pivoting Cable Clamp
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Solution Overview
Problem
Conventional insulators in overhead distribution systems are prone to contamination, leading to leakage currents and flashover failures, requiring frequent manual cleaning and replacement, which increases human error and maintenance time due to complex tying procedures.
Innovation Solution
A clamp-type line post insulator with a pivoting cable clamp, adjustable fixing unit, and disc-shaped insulation units that allow easy cable insertion and secure fixing, reducing contamination risks and simplifying maintenance through a rotatable design and enhanced structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional insulators are fixed on the crossarm by tying methods (side ties, top ties, spool ties), then the insulator can be securely mounted, but the utility workers have to manually tie the electrical cable on the insulator and memorize multiple methods and procedures, which increases the time spent and human error rate
Solution Approach 1:
The insulator is divided into a body portion and a separate cable clamp assembly. The cable clamp can be independently attached to the body, allowing workers to simply secure the clamp to the cable rather than performing complex tying procedures. This segmentation transforms a complex manual tying process into a simple attachment operation.
Solution Approach 2:
The cable clamp is designed with self-gripping features that automatically secure the electrical cable when the clamp is attached to the insulator body. The clamp structure itself performs the cable securing function without requiring additional manual tying steps, making the system self-servicing in terms of cable fixation.
2Reliability
If conventional insulators are disposed outdoors, then they can support electrical cables in overhead distribution systems, but they are easily deposited with severe contamination of fine particles, moisture, dust, and salt on the outer surface, which induces leakage currents and flashover failure
Solution Approach 1:
The cable clamp and cable contact surfaces are extracted as separate components from the main insulator body. This allows the insulator body to be dedicated to providing insulation and be easily cleaned or replaced, while the clamp assembly handles the mechanical cable securing function. The separation allows for optimized contamination resistance on the insulator body surface.
Solution Approach 2:
The design allows the insulator body to be easily removed and replaced when contaminated beyond cleaning effectiveness. The simple attachment mechanism enables rapid disposal of contaminated insulators and replacement with clean ones, restoring insulation strength without complex dismantling procedures.
3Stability of the object's composition
If conventional insulators require manual tying and multiple procedures, then they can be securely fixed, but the utility workers spend a lot of time for tying the electrical cable, which increases the human error rate
Solution Approach 1:
The fixing system is segmented into a body portion and a separate cable clamp assembly. The clamp is designed to be independently attached to the cable and then secured to the insulator body through a simple attachment mechanism. This segmentation transforms complex multi-step tying procedures into a simple two-step process: attach clamp to cable, then secure clamp to body.
Solution Approach 2:
The attachment mechanism changes the fixing parameter from friction-based manual tying to mechanical interlocking through the clamp structure. The clamp uses geometric constraints and mechanical engagement features that provide secure fixation through structural design rather than manual knot-tying techniques.
Data Source
AI summary
A clamp-type line post insulator is disclosed. The clamp-type line insulator is provided with a thread clamping device, and comprises: a body, a cable clamp, an insulation unit and an adjustable fixing unit. In the present invention, the body comprises: a receiving recess, a fixing base and a cable groove. Moreover, a pivoting end of the cable clamp pivotally connected to a pivot member that is formed on the fixing base. Particularly, after placing an electrical cable in the cable groove, the cable clamp is rotated by taking the pivot member as an axle center, thereby inserting an engaging end of the cable clamp into the engagement groove to engage with it. By such arrangements, the electrical cable be pressed and fixed in the cable groove by rotating the adjustable fixing unit.