Wear-Resistant Coupling Portions for Link Guides
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Solution Overview
Problem
Existing devices for guiding long objects, such as cables or hoses, experience significant wear and abrasion powder generation due to the rubbing of link plates and coupling pins, leading to inefficiencies and maintenance issues.
Innovation Solution
The device employs links with coupling portions made of a wear-resistant material, featuring a space between link portions that increases with distance from the coupling points, and uses elastomer projections and receiving portions to minimize friction and prevent direct contact between link plates, thereby reducing wear and abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If link plates are coupled together by coupling pins to enable rotational movement, then the device can accommodate and guide long objects during movement, but the coupling pins and link plates rub against each other causing wear and generating abrasion powder
Solution Approach 1:
The patent introduces a coupling portion as an intermediary element between link portions. This coupling portion includes a socket that receives a protrusion from another link portion, enabling rotational coupling while preventing direct contact between link portions. The intermediary coupling portion eliminates the harmful rubbing and abrasion powder generation that would occur with direct link plate contact.
Solution Approach 2:
The coupling portion is designed as a sacrificial element that can wear or be replaced without affecting the main link portions. By making the coupling portion replaceable and less critical than the link portions themselves, the system allows the coupling portion to bear the wear from rotational movement while protecting the more valuable link portions from abrasion.
2Strength
If link plates are made of durable material to withstand operational stresses, then the structural strength is improved, but the material generates abrasion powder when rubbed against coupling components
Solution Approach 1:
The patent applies different material properties to different parts of the coupling mechanism. The link portions are made of durable material for structural strength, while the coupling portions (sockets and protrusions) are made of wear-resistant material specifically selected to minimize abrasion powder generation during rotational movement. This local differentiation of material quality resolves the contradiction between strength and abrasion resistance.
Solution Approach 2:
The coupling mechanism uses composite construction where link portions and coupling portions are made of different materials optimized for their specific functions. The link portions use materials prioritizing structural strength, while coupling portions use materials prioritizing wear resistance and low abrasion characteristics, creating a composite system that balances both requirements.
3Stability of the object's composition
If coupling pins are designed to fit tightly into coupling pin holes for stable connection, then connection stability is improved, but the tight fit increases friction and wear during rotation
Solution Approach 1:
The coupling portion features a curved socket that receives a protrusion, allowing rotational movement along a curved path. This curved geometry provides stable connection during rotation while distributing contact forces more evenly, reducing friction and wear compared to a tight linear fit. The spherical/curved interface enables smooth rotational motion while maintaining connection stability.
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
This configuration effectively limits wear and abrasion powder generation, enhances the device's operational lifespan, and reduces noise during operation by minimizing direct contact between link components.
Implementation Method 1
The coupling portions are at least partially made of a second material having a wear resistance greater than that of the first material... The coupling portions are at least partially made of the second material having a greater wear resistance than that of the first material, which configures the link portions
Data Source
AI summary
A device for guiding long objects comprises a plurality links. Each link has a pair of link portions that face each other in a first direction. The links are disposed and respectively connected in series along a second direction. Each pair of link portions is connected by a respective pair of arms at the two ends of the respective link in a third direction. In the accommodation space enclosed and formed by each pair of link portions and the respective pair of arms, a long object is accommodated. Two link portions that are adjacent in the second direction are connected by coupling portions. The coupling portions are configured from a second material with a higher wear resistance than the first material that configures the respective link portions. A space is formed between the two link portions on the entire circumference of the coupling portions.