Rail Rig Apparatus One-Handed Rope Securing Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current methods for securing cables and ropes, especially when draped over handrails and other barriers, are inefficient and pose safety hazards due to the need for proper knot-tying skills, potential for premature release, and the inconvenience of using two hands.

Innovation Solution

A rail rig apparatus with adjustable fasteners and a unidirectional self-adjusting upper rope guide mechanism that securely attaches to handrails, allowing for quick and effective tie-offs of cables and ropes, featuring a releasable jaw and optional securing cleat and tending bracket for heavy-duty applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional knot-tying methods are used to secure ropes and cables over handrails, then the ropes can be secured, but the operation requires two hands and proper training, making it cumbersome and inconvenient

Engineering Contradiction:

Improvesecurity of rope attachmentVSAvoidease of tying off rope

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The rope guide mechanism features a self-adjusting jaw that automatically grips the rope when pulled through, eliminating the need for manual knot-tying operations. The mechanism serves itself by using the rope's own tension to secure it in place, requiring no special training or two-handed manipulation.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the manual knot-tying mechanical system with a mechanical jaw mechanism that automatically secures the rope. This substitution transforms the complex human skill-based operation into a simple one-handed device operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If knots are tied too tight to ensure security, then the attachment is secure, but it becomes difficult to release the rope in a timely manner

Engineering Contradiction:

Improvesecurity of rope attachmentVSAvoidspeed of rope release

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The jaw mechanism is designed to be dynamically adjustable - it grips tightly when the rope is pulled through (securing it), but can be quickly released by applying pressure to the release portion. This dynamic behavior allows the system to maintain both security and rapid release capability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The jaw acts as an intermediary between the rope and the handrail, providing a controlled gripping and releasing mechanism. This intermediary component mediates between the need for secure attachment and the need for quick release, eliminating the direct trade-off present in traditional knot-tying.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If knots are not tied secure enough to allow easy release, then the rope can be released quickly, but there is risk of premature release of the cable

Engineering Contradiction:

Improvespeed of rope releaseVSAvoidsecurity of rope attachment

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The jaw mechanism dynamically adapts its gripping force based on the rope tension. When the rope is pulled through, the jaw automatically tightens to secure it. The operator can quickly release it by applying pressure to the release portion, but the rope cannot prematurely release under normal tension conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The mechanism incorporates feedback through the rope tension itself - the tension generated when pulling the rope through the jaw automatically triggers the gripping action, ensuring secure attachment. The release mechanism provides feedback through operator pressure, enabling controlled release only when intentionally activated.

Inventive Principle:

Principle #23Feedback

4Reliability

If traditional two-handed knot-tying is used, then proper knots can be tied, but the operation is time-consuming and inefficient

Engineering Contradiction:

Improveproper knot formationVSAvoidtime required for tie-off operation

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The rope guide mechanism performs the securing function automatically as the rope is pulled through, eliminating the time-consuming manual knot-tying process. The mechanism serves itself by using the rope's own movement to trigger the gripping action, reducing the operation to a simple one-handed motion.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent extracts the complex knot-tying skill requirement from the operation and replaces it with a simple mechanical device. This extraction removes the time-consuming element of learning and executing proper knots, leaving only the simple action of pulling the rope through the guide mechanism.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS7644894B1Cable management and tie-off apparatus

Publication Date: 2010.01.12 PURE SAFETY GROUP INC

AI summary

A rail rig apparatus includes a body having a middle portion, lower end and an upper end, a lower support having a lower support recess with a lower recess opening, the lower support connected to the lower end of the body, a rig fastener member having a first fastener body end connected to one side of the body, a second fastener body end connected to an opposite side of the body, and a fastener member body extending from the first fastener body end around the lower support recess to the second fastener end, an upper support having an upper support recess with an upper recess opening connected to the upper end of the body, and an upper rope guide mechanism connected to the upper support wherein the upper rope guide mechanism has a pair of opposed jaws defining a space therebetween to receive and secure a rope.