Cable Positioning Assembly for Low-Force Conduit Pulling
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Solution Overview
Problem
The installation of cables into electrical or conduit boxes requires significant force due to cable weight and resistance, making it difficult to pull cables through conduits efficiently, especially when terminating inside enclosures.
Innovation Solution
A cable positioning assembly and pulling system with a winch mount, boom mount, and pivotable pulleys that allow for lateral and vertical adjustments, enabling precise alignment and reduced resistance during cable pulling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cables are pulled through conduit using conventional methods, then cable installation can be completed, but significant force is required and the process becomes difficult and time-consuming
Solution Approach 1:
The cable pulling system incorporates a winch that can be dynamically positioned and adjusted during the cable pulling operation. The winch mount includes a lateral positioning joint with pivotable pulleys that allow the system to adapt its configuration based on the specific installation requirements, enabling more efficient force application and reducing the overall pulling force needed.
Solution Approach 2:
A cable positioning assembly acts as an intermediary device between the winch and the cable. This assembly includes pulleys and positioning mechanisms that redirect and distribute the pulling force, reducing friction and resistance against the conduit, thereby decreasing the total force required to pull the cable through.
2Productivity
If conventional cable pulling methods are used, then cable installation can be completed, but the assembly and alignment process takes significant time
Solution Approach 1:
The cable positioning assembly is pre-configured with lateral positioning joints and pivotable pulleys that can be quickly deployed into position. The winch mount and positioning mechanisms are designed to be assembled and aligned rapidly before the cable pulling operation begins, reducing setup time and enabling faster installation.
Solution Approach 2:
The system uses dynamically adjustable positioning joints that allow for quick alignment adjustments during setup. The pivotable pulleys and lateral positioning mechanisms can be rapidly configured to match the specific conduit layout, minimizing the time required for assembly and alignment while maintaining installation speed.
3Force
If cable pulling is performed without precise positioning, then the process is simpler, but resistance against the conduit increases significantly
Solution Approach 1:
The cable positioning assembly serves as an intermediary that precisely positions the cable relative to the conduit. The pulleys and positioning mechanisms are configured to align the cable with the conduit path, minimizing contact points and friction, thereby reducing the pulling force required despite the added device complexity.
Solution Approach 2:
The positioning system applies localized precision at critical points along the cable path. The lateral positioning joints and pivotable pulleys are positioned at specific locations where alignment is most needed, providing precise cable positioning only where necessary to reduce resistance, rather than requiring complex positioning throughout the entire system.
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
Facilitates efficient cable pulling into electrical boxes or enclosures by minimizing operational forces and reducing the time required for assembly and alignment, allowing single-person operation.
Implementation Method 1
The resistance against the conduit... A significant amount of force is required due to the weight of the cables, the resistance against the conduit
Data Source
AI summary
A cable pulling system and associated method are shown. Examples include positioning joints that allows a pulling boom to move up or down and side to side, while maintaining alignment of a pulling cable between pulleys. Example methods include positioning a pulling boom within a conduit box and pulling an electrical cable through a conduit into the conduit box.