Adjustable Stringing Block Base for Wire Alignment and Safer Loading
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Solution Overview
Problem
Current stringing block systems for guiding utility cables during installation face challenges such as difficulty in lowering wires onto the catch arm, cumbersome rotation to align with successive structures, and durability issues during transportation, increasing safety risks and labor costs.
Innovation Solution
A stringing block system with an extendable guide arm and an adjustable base that allows for rotation without disengaging from the structure, featuring protective flanges and a periphery design to safeguard sheaves from damage, enabling easier wire alignment and reduced manual labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stringing block assembly is made heavy-duty to improve durability, then reliability is improved, but the weight increases making it difficult to rotate and reposition
Solution Approach 1:
The stringing block assembly is divided into multiple components: a base portion that remains attached to the structure, and a stringing block portion that can be detached and repositioned. This segmentation allows the heavy-duty stringing block to be replaced without moving the entire heavy assembly, resolving the contradiction between durability and ease of repositioning
Solution Approach 2:
The stringing block is extracted as a separate removable component from the base assembly. The base remains fixed on the structure while the stringing block can be easily removed and repositioned, eliminating the need to move the entire heavy assembly and solving the weight-related repositioning difficulty
2Adaptability or versatility
If the stringing block assembly is designed to rotate for alignment with successive structures, then adaptability is improved, but the operation becomes more complex requiring disengagement and reattachment
Solution Approach 1:
The system is segmented into a fixed base and a movable stringing block. The base provides stable attachment to the structure while the stringing block can be independently repositioned and rotated, simplifying the alignment process without requiring complex rotation mechanisms on the entire assembly
Solution Approach 2:
The base is pre-installed on the structure with alignment markings and guide features that facilitate proper positioning of the stringing block before attachment. This preliminary setup enables quick alignment and reduces the complexity of repositioning operations
3Ease of operation
If the guide arm is extended to provide greater working area, then ease of operation is improved, but the device complexity increases
Solution Approach 1:
The guide arm is designed with telescopic sections that can extend and retract as needed. This dynamic configuration provides greater working area when required while maintaining a compact form when retracted, avoiding the need for a permanently complex extended structure
Data Source
AI summary
A stringing block system is disclosed. The stringing block system includes a plurality of plates forming a housing coupled to a base, at least one sheave coupled to the housing, and a side gate. In some embodiments, the base is an adjustable base configured to rotate the stringing block system forward or backward such that one or more sheaves will form an angle with the respect to a ground surface. A desired angle can easily be achieved to create proper alignment with a successive structure. The adjustable base is structured such that rotating the stringing block system does not require disengaging the entire system from a structure. In some embodiments, the stringing block system includes an extendable guide arm coupled to the housing, which provides a greater area for a helicopter pilot to work with when lowering a wire onto the stringing block system.