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Method for checking integrity of composite load bearing member

A technology for composite components and load-bearing components, used in household components, material defect testing, elevators, etc., to solve the problem of not being able to reliably reveal all types of fiber composite components

Pending Publication Date: 2019-06-14
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It has now been found that prior art inspection methods such as those monitoring electrical properties do not reliably reveal all types of defects in fiber composite components

Method used

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  • Method for checking integrity of composite load bearing member
  • Method for checking integrity of composite load bearing member
  • Method for checking integrity of composite load bearing member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] figure 1 Shows the steps of a preferred embodiment of the method for checking the quality and / or condition of an elongated composite member 1 which is a load-bearing member such as a rope 2, 2' of a hoisting device of an elevator or such Precursor of the load bearing member. The method comprises providing 100 an elongated composite member 1 made of a composite material comprising non-metallic reinforcing fibers f embedded in a polymer matrix m, said reinforcing fibers being preferably carbon fibers or glass fiber. The elongated composite member 1 is a load-carrying member of ropes 2, 2' of a hoisting device, such as an elevator, or a precursor of such a load-bearing member. Thereafter, the method comprises varying 200 the temperature of said elongated composite member 1 by heating or cooling said elongated composite member 1 from its lateral sides substantially via its sides 1a, 1b relative to The longitudinal direction of the elongated composite member 1 faces the t...

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PUM

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Abstract

The invention relates to a method for inspecting quality and / or condition of an elongated composite member (1), which is a load bearing member of a rope (2) of a hoisting apparatus, such as an elevator, or a precursor of such a load bearing member, the method comprising providing (100) an elongated composite member (1); and changing (200) the temperature of the elongated composite member (1) by heating or cooling the elongated composite member (1) via a flank (la,lb) thereof; and scanning (300) the elongated composite member (1) from a lateral side thereof with a thermal imaging device (3) after the changing (200) of the temperature; and creating (400) thermographic images (4) of the elongated composite member (1).

Description

technical field [0001] The invention relates to checking the condition of elongated composite members of ropes of lifting equipment. The lifting device is preferably an elevator for vertical transport of passengers and / or goods. Background technique [0002] In hoisting devices such as elevators, one or more ropes are used as means for suspending the load to be lifted. Each elevator rope generally comprises one or more load-bearing members elongate in the longitudinal direction of the rope, each load-bearing member forming a continuous uninterrupted structure over the entire length of the rope. A load-carrying member is a member of the rope which is capable of carrying the load exerted on the rope in its longitudinal direction. A load such as a weight suspended by a rope creates a tension on the load-bearing member which can be transmitted by said load-bearing member all the way from one end of the rope to the other end of the rope. The rope may also include non-load-bear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B7/12G01N25/18G01N25/72
CPCB66B7/1215G01N25/72B29L2031/707
Inventor K.安廷S.博苏特A.哈西宁J.赫伦纽斯J.杭卡宁M.琼图宁P.克雷M.拉西拉H.莱蒂宁A.纳雷科M.普拉宁K.罗特萨莱宁P.瓦尔尤斯
Owner KONE CORP