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1. WO2013055196 - METHOD AND EQUIPMENT OF STEEL ROPE QUALITY DIAGNOSTICS

Publication Number WO/2013/055196
Publication Date 18.04.2013
International Application No. PCT/LT2012/000001
International Filing Date 16.03.2012
Chapter 2 Demand Filed 10.12.2012
IPC
G01N 3/08 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
3Investigating strength properties of solid materials by application of mechanical stress
08by applying steady tensile or compressive forces
CPC
G01M 7/00
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
7Vibration-testing of structures; Shock-testing of structures
G01M 7/04
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
7Vibration-testing of structures; Shock-testing of structures
02Vibration-testing ; by means of a shake table
04Monodirectional test stands
G01N 2203/006
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
0058Kind of property studied
006Crack, flaws, fracture or rupture
G01N 2203/028
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
02Details not specific for a particular testing method
026Specifications of the specimen
0262Shape of the specimen
0278Thin specimens
028One dimensional, e.g. filaments, wires, ropes or cables
G01N 2203/0688
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
02Details not specific for a particular testing method
06Indicating or recording means; Sensing means
067Parameter measured for estimating the property
0688Time or frequency
G01N 2291/262
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
26Scanned objects
262Linear objects
Applicants
  • VILNIUS GEDIMINAS TECHNICAL UNIVERSITY [LT]/[LT] (AllExceptUS)
  • AUGUSTAITIS, Vytautas Kazimieras [LR]/[LT] (UsOnly)
  • BUČINSKAS, Vytautas [LT]/[LT] (UsOnly)
  • ŠUTINYS, Ernestas [LT]/[LT] (UsOnly)
Inventors
  • AUGUSTAITIS, Vytautas Kazimieras
  • BUČINSKAS, Vytautas
  • ŠUTINYS, Ernestas
Agents
  • EINORIS, Vytautas
Priority Data
2011 09213.10.2011LT
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND EQUIPMENT OF STEEL ROPE QUALITY DIAGNOSTICS
(FR) PROCÉDÉ ET ÉQUIPEMENT DE DIAGNOSTIC POUR LA QUALITÉ DE CÂBLES EN ACIER
Abstract
(EN) This invention is intended to use for diagnostics of various ropes in lifting equipment. Aim of invention - to create new and quite simple non-destructive method for rope quality diagnostics and estimate special equipment for realization of such method. Proposed method is based on obtaining fact of broken rope wires on rope surface. To achieve this rope is tensed by permanent axial load, rope is excited by transverse vibrations using vibrator, which are inducing transverse rotational vibrations. Oscillations of free ends of broken wires are measured by set of sensors and after signals are processed, presence and positions of broken wires are detected. Vibrator for rope excitation and set of sensors are mounted on special frame, which is tightly clamped on rope and separated fragment of rope, where vibrations are excited, set of sensors are moved along tested rope fragment. Procedure is repeated in next fragment of rope until all length of rope is tested.
(FR) La présente invention concerne l'utilisation de diagnostics pour des câbles variés d'équipement de levage. L'objectif de l'invention est de créer un nouveau procédé non destructif relativement simple pour diagnostiquer la qualité de câble, et d'évaluer un équipement spécial destiné à la mise en oeuvre d'un tel procédé. Le procédé selon l'invention est basé sur l'obtention de faits concernant des fils métalliques rompus à la surface du câble. A cette fin, le câble est soumis à une traction par une charge axiale permanente, et à des vibrations transversales qui induisent des vibrations rotatives transversales, à l'aide d'un vibreur. Les oscillations des extrémités libres des fils métalliques rompus sont mesurées par un ensemble de capteurs, et après le traitement des signaux, la présence et les positions des fils métalliques rompus sont détectées. Le vibreur qui sert à faire vibrer le câble et l'ensemble de capteurs sont montés sur une ossature spéciale qui est étroitement serrée sur le câble et sur un fragment de câble séparé. Pendant les vibrations, l'ensemble de capteurs se déplace le long du fragment de câble testé. Cette procédure est répétée pour le fragment de câble suivant jusqu'à ce que le câble soit testé en totalité.
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