Grating-Mounted Rope Protector for Abrasion and Anti-Fall Control

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Solution Overview

Problem

Conventional rope protectors for industrial rope access are prone to abrasion and damage from sharp edges and acute loading angles, and often require complex securing methods, which can lead to unintended movement and reduced rope strength.

Innovation Solution

A rope protector with an enclosed channel, a head portion, and a foot portion, designed to be rotated within grating holes, featuring a flared inner surface and a gripping mechanism to securely engage with the grating, reducing the need for additional securing methods and minimizing rope damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional rope protectors are used with sharp grating edges, then the rope is protected from direct contact with edges, but the protectors are prone to abrasion and damage reducing their effectiveness

Engineering Contradiction:
Improverope damage from sharp edgesVSAvoidprotector durability against abrasion
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The rope protector incorporates a hardened wear surface (such as a hard oxide coating or hardened polymer layer) specifically at the contact points with the grating edges, while the rest of the body remains made of lighter, more flexible material. This localized hardening protects against abrasion and damage from sharp edges without compromising the overall flexibility and protection function of the device.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If conventional rope protectors use simple passage through grating holes, then installation is quick, but the protectors are prone to unintended movement and falling

Engineering Contradiction:
Improveinstallation speedVSAvoidsecuring stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The rope protector is divided into distinct functional segments: a passage portion for quick insertion through the grating hole, and a separate securing mechanism (such as a claw, hook, or expandable element) that engages with the grating structure after passage. This segmentation allows the device to be quickly installed while also providing reliable anti-fall protection through the dedicated securing component.

Inventive Principle:
Principle #1Segmentation

3Reliability

If conventional rope protectors require complex securing methods, then stability is improved, but installation time and complexity increase

Engineering Contradiction:
Improveanti-fall protectionVSAvoidsecuring mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The rope protector incorporates a self-securing mechanism that automatically engages with the grating structure upon insertion, without requiring additional tools, cords, or complex assembly steps. The securing element (such as an expandable claw or spring-loaded hook) activates automatically when the protector is passed through the grating hole, providing reliable anti-fall protection while maintaining simple, quick installation.

Inventive Principle:
Principle #25Self-service

4Adaptability or versatility

If acute loading angles are applied to rope protectors, then rope access flexibility is improved, but the protectors suffer from increased abrasion and reduced rope strength

Engineering Contradiction:
Improverope access angle flexibilityVSAvoidrope breaking strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The rope protector is designed with a three-dimensional orientation feature that allows it to accommodate loading angles from multiple directions, not just a single plane. The securing mechanism and body geometry are configured to distribute forces across different spatial dimensions, enabling the rope to handle acute loading angles while maintaining full breaking strength by preventing stress concentration at any single point.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11402049B2Rope protector and associated methods
Publication Date: 2022.08.02 DORENBOS DIRK OTTO
  • US11402049B2 patent drawing
  • US11402049B2 patent drawing
  • US11402049B2 patent drawing

AI summary

A rope protector for protecting a rope as it passes through a grating. The rope protector comprises an enclosed channel portion, a head portion and a foot portion. The channel portion is waisted to allow the rope to be rotated within a hole in a grating. The head portion extends laterally from one end of the channel portion to prevent passage of the rope protector through the grating hole and the foot portion extends laterally from the other end of the channel portion to be passed through the grating hole when aligned with the grating hole and to prevent the foot portion being removed from the grating hole when rotated.