Elevator Rope Installation Using Car-Mounted Clamping and Guides

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional elevator rope installation is challenging due to the need for robust handling of heavy steel ropes and careful management of lightweight, flexible ropes with sensitive coatings, requiring a simple, quick, and well-controlled installation method.

Innovation Solution

A method involving arranging ropes from rope reels to a rope wheel and a clamping device on the elevator car, with vertical movement of the car to pull ropes while using guides and clamping devices to ensure controlled routing and installation, facilitated by guides and clamping devices mounted on the car.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional steel ropes are used, then strength and durability are improved, but weight and handling difficulty increase

Engineering Contradiction:

Improverope strengthVSAvoidrope weight

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The patent changes the material parameters of the ropes from conventional steel to synthetic materials (such as polyethylene or polypropylene), fundamentally altering the density and strength-to-weight ratio. This enables the ropes to be significantly lighter while maintaining sufficient strength for elevator applications, directly resolving the contradiction between strength and weight

Inventive Principle:

Principle #35Parameter changes

2Weight of moving object

If lightweighted ropes with sensitive coatings are used, then weight is reduced, but handling complexity and risk of damage increase

Engineering Contradiction:

Improverope weightVSAvoidhandling ease

Core Design Contradiction:

Weight of moving objectVSEase of operation

Solution Approach 1:

The patent applies preliminary protective actions by coating the lightweight ropes with protective layers before installation. These coatings protect the sensitive rope surfaces from damage during handling and installation, making the lightweight ropes easier to handle without risk of coating damage, thus resolving the contradiction between weight reduction and handling ease

Inventive Principle:

Principle #10Preliminary action

3Weight of moving object

If multiple thin ropes are used, then weight is reduced, but control and alignment difficulty increase

Engineering Contradiction:

Improverope weightVSAvoidrope alignment precision

Core Design Contradiction:

Weight of moving objectVSManufacturing precision

Solution Approach 1:

The patent introduces intermediary guiding components (such as guide pulleys and alignment devices) that act as mediators between the multiple thin ropes and the installation system. These intermediaries provide controlled pathways for each rope, ensuring precise alignment and positioning during installation, thereby resolving the contradiction between weight reduction through thin ropes and the difficulty of controlling their alignment

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12606419B2Method of installing ropes of an elevator and arrangement therefor

Publication Date: 2026.04.21 KONE OYJ

AI summary

A method of installing ropes of an elevator includes arranging a plurality of ropes to pass from one or more rope reels mounted on an elevator car to a rope wheel mounted separately from the car, around the rope wheel, and from the rope wheel to a clamping device mounted on the car; and thereafter moving the elevator car vertically relative to the rope wheel while each rope is clamped by the clamping device in particular for thereby pulling ropes from the one or more rope reels with the clamping device moving together with the car. An arrangement for installing ropes of an elevator implements the method.