Winch Hook Retention Load Analysis for Retraction Damage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Winches in vehicles, particularly those used in off-road conditions, lack an automatic stop mechanism, risking damage to the storage area when fully retracted, due to the application of full force, which can cause damage to the vehicle components.
Innovation Solution
A method and system for evaluating winch hook retention by determining contact locations, load vectors, plastic strains, deflections, and clearances using a preprocessor and non-linear analysis, followed by comparison to predefined limits, and generating a display for design verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the winch is designed to be powerful without an automatic stop mechanism, then the winch can provide sufficient pulling force for off-road conditions, but the storage area may be damaged when the winch is fully retracted due to full force application
Solution Approach 1:
The patent applies preliminary anti-action by designing a retention system that preemptively counteracts the harmful force of full winch retraction. The retention location and associated structures are positioned and dimensioned to engage with the winch cable or hook before full retraction force can be applied, thereby preventing damage to the storage area while maintaining the winch's powerful pulling capability.
Solution Approach 2:
The patent introduces an intermediary retention system between the winch and the storage area. This retention location acts as a mediator that intercepts the full retraction force and distributes it across multiple contact points and structural elements, preventing direct damage to the storage area while allowing the winch to maintain its full power for pulling operations.
2Ease of operation
If the winch hook is stored attached to the vehicle, then the winch is convenient for use, but the storage area could be damaged if full force is applied during rewinding
Solution Approach 1:
The retention system is designed to preemptively counteract the full retraction force before it can damage the storage area. The retention location and associated structures engage with the winch cable or hook in advance, distributing the force across multiple contact points and preventing damage to the vehicle's storage area while maintaining convenient hook storage.
Solution Approach 2:
The patent implements beforehand cushioning by designing the retention system to absorb and distribute the full retraction force across multiple structural elements and contact points. This cushioning effect protects the storage area from damage while allowing the winch hook to be conveniently stored attached to the vehicle during normal operation.
3Object-affected harmful factors
If a retention system is designed to prevent damage, then the storage area is protected, but the system complexity increases with multiple contact locations and load vectors to analyze
Solution Approach 1:
The patent applies segmentation by dividing the retention system into multiple discrete contact locations and load vectors that can be independently analyzed. The mesh model is segmented into finite elements, and the forces are divided into separate load vectors acting at specific contact points. This segmentation allows complex forces to be broken down into manageable components for systematic analysis while maintaining comprehensive damage prevention.
Solution Approach 2:
The patent utilizes parameter changes by systematically varying and analyzing multiple parameters including contact locations, load vectors, plastic strains, deflections, and clearances. By changing and evaluating these parameters through non-linear analysis, the system identifies optimal retention configurations that prevent damage while managing complexity through structured parameter evaluation rather than attempting a single complex calculation.
Data Source
AI summary
A method and system for analyzing a vehicle winch design includes a preprocessor determining contact locations for winch components from a mesh model. The preprocessor determines load vectors at a winch assembly and counter-vectors at a fairlead based on a relative position of a winch wire and a hook retention location based on a winch load rating. A non-linear analysis system determines plastic strains, deflections, and clearances under the winch load rating based on the contact locations, load vector and counter vector, and communicates the plastic strains, deflections, and clearances to a post processing system. The post processing system compares the plastic strains to strain limit at a post processor, compares the deflection to a deflection limit, compares clearances to a clearance limit and generating a display based on comparing the plastic strains, compares the deflection to the deflection limit and compares clearances to the clearance limit.