Rotatable Pulley Shackle Assembly for Multi-Angle Traction
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Solution Overview
Problem
Current traction and rescue operations face inefficiencies due to limited traction angles, leading to stress concentration and equipment damage, with traditional pulleys and shackles exhibiting low coordination efficiency and cumbersome installation processes.
Innovation Solution
A pulley fastener designed for trailer shackles, featuring a bolt with a pulley body, rotatably connected split shackles, and adjustable components like interlock blocks, magnetic sheets, and a limit structure, allowing for multi-angle adjustments and secure rope threading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional pulleys and shackles are used separately, then each component can perform its basic function, but the coordination efficiency is low and the installation process is cumbersome
Solution Approach 1:
The patent combines the pulley and shackle into a single integrated fastener assembly. The pulley body is directly connected to the shackle body through a connecting structure, eliminating the need for separate installation of two components. This integration improves coordination efficiency while simplifying the installation process, as the entire assembly can be installed as one unit.
Solution Approach 2:
The integrated fastener assembly serves multiple functions simultaneously: it acts as both a pulley for rope guidance and a shackle for structural connection. The assembly can also accommodate different rope configurations and loading conditions, providing versatile functionality that improves productivity without requiring multiple separate components.
2Object-affected harmful factors
If traditional shackles are used with limited traction angles, then the connection is simple, but stress concentration occurs and equipment damage risk increases
Solution Approach 1:
The pulley body is designed to be rotatable relative to the shackle body, allowing the traction angle to dynamically adjust according to the loading conditions and rope position. This dynamic adjustment capability distributes stress more evenly across different angles, reducing stress concentration while maintaining adaptability to various operational requirements.
Solution Approach 2:
The invention adds rotational freedom in a new dimension, allowing the pulley to orient itself optimally in response to applied forces. This dimensional freedom enables the system to accommodate forces from multiple directions, reducing stress concentration by distributing loads across different angular positions rather than being constrained to fixed angles.
3Ease of operation
If a fixed pulley-shackle assembly is used, then the structure is simple, but the adjustment process is cumbersome in complex operations
Solution Approach 1:
The rotatable connection between the pulley body and shackle body enables automatic adjustment of the traction angle without requiring manual intervention. The assembly can adapt to different operational configurations dynamically, improving ease of operation while maintaining relatively simple structural design through the use of a single rotating joint.
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
The pulley fastener enhances traction efficiency, reduces equipment damage, and simplifies complex operations by providing a flexible, adaptable, and safe connection system compatible with various shackles, thereby improving operational efficiency and safety.
Implementation Method 1
the first split shackle and the second split shackle each is provided with a magnetic sheet
Data Source
AI summary
A pulley fastener for connecting with trailer shackles is provided, including a bolt. A pulley body is provided on an outside surface of the bolt, a first split shackle and a second split shackle are rotatably connected to the outside surface of the bolt and located on both sides of the pulley body, respectively. Both ends of the bolt are screwed with nuts for fixing the first split shackle and the second split shackle. By fastening the first and second split shackles, a closed structure and a semi open structure can be formed, which can facilitates the threading and fixing of ropes. The pulley body can provide higher traction efficiency and a safer operating environment by being compatible and cooperated with any shackles. And the multi angle adjustment function of the pulley body can reduce equipment damage caused by stress concentration, thereby enhancing the smoothness of the traction process.