Cable Duct Laying Assembly With Flexible Guide Hose
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Solution Overview
Problem
Existing cable pulling devices face difficulties in accommodating the variable orientations and heights of cable duct openings in buildings, leading to instability and manual support requirements due to rigid guide pipes, especially in curved or cornered ducts.
Innovation Solution
A flexible guide, such as a hose, connects the securing head to the spool assembly, allowing independent positioning and orientation, with an abrasion-resistant outer tubular member and slippery inner tubular member to facilitate cable insertion, and a securing head with jaws for secure duct engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid guiding pipe is used to guide the lead wire from the spool assembly to the duct opening, then the structural stability and alignment are improved, but the adaptability to varying duct orientations and heights deteriorates
Solution Approach 1:
The rigid guiding pipe is replaced with a flexible hose that can adapt to varying duct orientations and heights while still providing guidance for the lead wire. The flexible hose allows the securing head to be positioned independently in terms of position and orientation relative to the spool assembly, resolving the contradiction between structural stability and adaptability.
2Manufacturing precision
If a rigid guide structure is used to maintain securing head orientation, then the orientation precision is improved, but the device complexity increases
Solution Approach 1:
The complex rigid guide structure is replaced with a simple flexible hose that naturally adapts to the spatial relationship between the spool assembly and securing head. The hose provides sufficient guidance for the lead wire while allowing the securing head to maintain its optimal orientation independently, significantly reducing device complexity while preserving orientation precision.
Data Source
Figure 1
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Figure 3~5
AI summary
A device (1) for laying cables inside a cable duct comprises a spool assembly (2) having a spool (21) and a spool support (22), a securing head (5) configured to be secured at a duct opening of a cable duct, and a lead wire (3) having a wound portion (31) at least partially wound on the spool (21), an end portion (32) projecting from the securing head (5) for insertion in the cable duct upon unwinding the lead wire (3) from the spool (21), and a connecting portion (34) extending between the wound portion (31) and the end portion (32). A flexible guide (4) connects the securing head (5) to the spool support (22), the connecting portion (34) of the lead wire (3) extending slidably along the guide (4).