Fiber Optic Pulling Grip Assembly With Tapered Serrated Sleeve
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Solution Overview
Problem
The installation of fiber optic cables through conduits or innerducts is challenging due to the risk of damage from excessive tension or tight bend radii, and existing pulling grip tools are cumbersome, require technical expertise, and often need frequent replacement due to damage and space constraints.
Innovation Solution
A fiber optic pulling grip assembly comprising a sleeve, connection sleeve, swivel pulling eye unit, and fitting with a tapered sleeve coupling portion and radial serrations, which allows for efficient and secure assembly without requiring multiple tools or technical expertise, minimizing diameter requirements and reducing damage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wire pulling grip is employed for longer distances, then the fiber optic cable can be pulled through conduits, but the pulling grip damages easily over time requiring frequent replacement
Solution Approach 1:
The pulling grip is divided into multiple modular components including a grip body, pulling eye, and connection elements that can be independently replaced. This segmentation allows specific damaged parts to be replaced without discarding the entire assembly, thereby improving durability and service life.
Solution Approach 2:
The pulling grip utilizes materials and structural parameters optimized for stress distribution and wear resistance. The design incorporates parameter changes in material selection and geometric configuration to enhance overall reliability and extend service life under repeated loading conditions.
2Adaptability or versatility
If multiple wire pulling grips are carried for different fiber optic cable diameters, then various cable sizes can be accommodated, but this is troublesome and increases device complexity
Solution Approach 1:
The pulling grip is designed with universal features including adjustable components and standardized interfaces that allow a single grip model to accommodate multiple fiber optic cable diameters. This multi-functionality eliminates the need to carry multiple specialized grips, reducing complexity while maintaining adaptability.
Solution Approach 2:
The pulling grip incorporates dynamic adjustment mechanisms that allow the grip dimensions and configuration to be modified during use to match different cable sizes. This dynamic adaptability enables a single device to serve multiple functions across various cable diameters.
3Force
If external wire pulling grips are used, then pulling capability is provided, but wires need to be tightened to smooth out mesh which requires gloves and technical experience
Solution Approach 1:
The pulling grip incorporates self-adjusting features and pre-configured tensioning mechanisms that automatically smooth out the mesh structure during assembly without requiring manual tightening by the operator. This eliminates the need for gloves and reduces the technical experience required for proper assembly.
Solution Approach 2:
The pulling grip is pre-assembled and pre-tensioned during manufacturing so that the mesh structure is already smoothed and secured before field deployment. This preliminary action eliminates the need for on-site tightening operations, making the device easier and safer to operate.
4Reliability
If multiple processes such as trimming, marking, inserting, jacket removal, fiber core wrapping, cable core wrapping, and tightening are performed before pulling, then proper installation is achieved, but this is time-consuming and requires technical experience
Solution Approach 1:
Multiple installation processes are merged into integrated steps where trimming, marking, inserting, and wrapping operations are combined into streamlined sequences. The pulling grip design facilitates these combined operations, reducing the total number of discrete steps required while maintaining installation quality.
Solution Approach 2:
Critical preparation steps including trimming, marking, and initial positioning are pre-performed or pre-configured as part of the pulling grip assembly process. This preliminary action reduces the number of steps that must be performed in the field, increasing productivity without compromising installation reliability.
Data Source
AI summary
A fibre optic pulling grip assembly, comprising a sleeve, connection sleeve, swivel pulling eye unit, fitting, clamp, and a securing unit is provided. The sleeve has a sleeve coupling portion and sleeve body. The connection sleeve has a connection sleeve head and connection sleeve body. The swivel pulling eye unit has a pulling eye swivel portion and pulling eye body. The connection sleeve body is configured for fixed assembly of the pulling eye body therewithin, the sleeve coupling portion is configured for fixed assembly of the connection sleeve body therewithin, and the fitting is configured for fixed assembly of the sleeve coupling portion therewithin. The clamp has a clamp securing portion and clamping portion. The securing unit moves longitudinally toward the clamping portion, such that the fitting is moved to assemble to the sleeve coupling portion, applying pressure to the sleeve coupling portion supported by the connection sleeve body.