WO2020206829A1 - Appareil et procédé de test de fatigue de contact destinés à un fil d'acier dans une condition d'impact radial - Google Patents

Appareil et procédé de test de fatigue de contact destinés à un fil d'acier dans une condition d'impact radial Download PDF

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Publication number
WO2020206829A1
WO2020206829A1 PCT/CN2019/090617 CN2019090617W WO2020206829A1 WO 2020206829 A1 WO2020206829 A1 WO 2020206829A1 CN 2019090617 W CN2019090617 W CN 2019090617W WO 2020206829 A1 WO2020206829 A1 WO 2020206829A1
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WO
WIPO (PCT)
Prior art keywords
steel wire
impact
axial
contact
spring
Prior art date
Application number
PCT/CN2019/090617
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English (en)
Chinese (zh)
Inventor
王大刚
朱辉龙
张俊
高文丽
张德坤
张春雷
谭佃龙
邱从怀
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中国矿业大学
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Application filed by 中国矿业大学 filed Critical 中国矿业大学
Publication of WO2020206829A1 publication Critical patent/WO2020206829A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
    • G01N3/317—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by electromagnetic means

Definitions

  • the invention relates to a fretting fatigue device for steel wires, in particular to a fretting fatigue test device and method for steel wires under radial impact working conditions under impact working conditions.
  • Wire rope has good bending flexibility and load-bearing capacity, and is widely used in aircraft carrier arrest systems and marine moorings.
  • the speed of carrier-based aircraft can reach 220km/h-280km/h when landing, so the wire rope is the main load-bearing component of the arrest system.
  • the service life and load-bearing strength of the wire rope are of great significance for the safe landing of the carrier-based aircraft.
  • the wire rope When the arresting cable prevents the landing of the carrier aircraft, the wire rope is subjected to radial impact load and bending load, which in turn leads to the combined effect of the impact load, fatigue tension, and fatigue bending stress of the steel wire inside the wire rope.
  • the contact load and relative slip between the steel wire and the steel wire that is, the fretting fatigue phenomenon of the steel wire under impact conditions, leads to the initiation, propagation and final fracture of the steel wire, which seriously affects the fatigue strength and service life of the arresting cable.
  • Patent No. 200810304928.3 discloses an axial fatigue test method and device for applying superimposed wear load to the test piece.
  • the wear load device of the reducer structure is used to apply wear load to the components at the same time.
  • fatigue load; Patent No. 200910182122.6 discloses a steel wire fretting fatigue testing machine and method. A load load is applied to the axial steel wire through a horizontal loading device, and the axial clamping, tension and compression device acts on the steel sample in the axial direction.
  • the patent number 201110195119.5 discloses an experimental method and device for monitoring the fretting fatigue state of the steel wire, by controlling the hydraulic lifting platform
  • the up and down movement applies axial alternating load to the test wire, and the load load is applied to the axial wire through the horizontal loading device.
  • the test wire has fretting fatigue, and the tangential force is transmitted to the spoke type through the internal thread connecting rod provided on the loading block.
  • the tension and compression sensor can dynamically record the tangential force between the contact steel wires and the acoustic emission signal of the test steel wire during the experiment; the above-mentioned test devices are all aimed at the fretting fatigue test of the specimen under the axial tension.
  • Patent No. 201410728399.5 discloses an impact friction test system for winding hoisting wire ropes in kilometer-deep wells, simulating the impact friction of winding hoisting wire ropes in kilometer-deep wells, and studying wire rope friction under different rotation speeds, accelerations, impact speeds, and contact specific pressures. Learn performance.
  • none of the above devices can carry out the fretting fatigue test of the steel wire inside the wire rope under high-speed and large-load impact conditions.
  • a fretting fatigue device for steel wires under radial impact conditions is provided to detect the radial impact force, radial impact displacement, axial tension, friction between steel wires and other parameters of the steel wire under impact conditions, and can evaluate the diameter
  • the fatigue strength decline of steel wire and the evolution of remaining service life under impact conditions are of great significance to the study of how to improve the load-bearing capacity and service life of steel wire under impact conditions.
  • the purpose of the present invention is to provide a fretting fatigue test device and method for steel wire under the condition of high-speed radial impact with simple structure, simple operation and real-time monitoring.
  • the fretting fatigue test device for steel wire under radial impact conditions of the present invention includes a test bench and an axial steel wire.
  • a steel wire tensioning device is provided at both ends of the axial steel wire.
  • a radial contact device, an impact device and a spring return device are provided at the middle position;
  • the steel wire tensioning device includes an electric cylinder, a tensile force sensor, and a steel wire clamp connected in sequence.
  • One end of the tensile force sensor is connected to the piston threaded rod of the electric cylinder, and the other end is connected to the steel wire clamp;
  • the end of the steel wire is embedded in the steel wire clamp, which is clamped by screws through the cover plate to ensure that the axial steel wire does not slip when subjected to axial tension;
  • the radial contact device includes a support rail, a steel wire fixing fixture symmetrically arranged on the support rail, a fixture support and a track slider; the steel wire fixing fixture and the track slider are assembled together through the positioning hole of the fixture support;
  • the steel wire fixing jig is symmetrically embedded with the contact steel wire in contact with the axial steel wire, and the upper and lower ends are clamped and fixed by screws;
  • the impact device includes an impact electric cylinder that provides impact force, a tension and compression sensor connected to the threaded rod of the piston of the impact electric cylinder, the other end of the tension and compression sensor is connected to the punch in a threaded connection, and the center of the punch is facing the steel wire Contact position; the front side of the impact device is equipped with a displacement sensor fixed on the test bench, and the measurement position is directly on the center of the fixture support;
  • the spring reset device includes a spring fixing block and a spring.
  • the spring fixing block is fixed on the support rail with a screw, and the spring is fitted between the guide rail slider and the spring fixing block; the distance between the rail slider and the spring fixing block is adjusted , Can control the contact force on both sides of the axial steel wire.
  • the steel wire fixing fixture is formed by connecting a trapezoid-like structural block and a square plate through screws.
  • the trapezoid-like shape has a circular groove on the plane for inserting and fixing the steel wire, and the end of the groove is provided with a through hole connecting the fixing plate.
  • the upper surface of the support rail at the spring fixing block is engraved with equal interval scales, which is beneficial to control the distance between the rail slider on both sides of the support rail and the spring fixing block during assembly.
  • the axial steel wire is assembled on the steel wire tensioning device, and the electric cylinder is controlled by the controller to apply a predetermined initial tension to the axial steel wire;
  • the impact electric cylinder is controlled by the computer to impact the axial steel wire; the impact speed of the impact electric cylinder is changed, the output signals of different sensors are collected, and recorded on the computer to obtain the radial direction of the axial steel wire under different impact speeds. Impact force, radial impact displacement and axial tension;
  • the present invention has simple structure, simple operation, and can monitor the fretting fatigue test of steel wire under high-speed radial impact conditions in real time.
  • the impact condition is simulated, the radial impact is performed on the steel wire contact part, and the micro-moving contact device after the impact is reset to realize the repeated impact of the same contact position, which is realized by a displacement sensor Measurement of impact displacement.
  • the steel wires on the steel wire clamps on both sides are assembled symmetrically and parallel to meet the contact conditions; the contact between the steel wires is guaranteed by the spring tension of the spring return device.
  • the contact spring tension on both sides of the axial steel wire can be controlled; the position of the impact device can be changed to obtain the fretting fatigue study of the steel wire under different impact states.
  • the radial impact force, radial impact displacement, axial tension, friction between steel wires and other parameters of the steel wire under impact it is possible to evaluate the fatigue strength decline and the remaining service life evolution of the steel wire under radial impact conditions. How to improve the load-bearing capacity and service life of steel wire rope under impact conditions is of great significance.
  • Figure 1 is a schematic diagram of the structure of the present invention
  • FIG. 2 is a schematic structural diagram of the A-direction contact device in FIG. 1;
  • Figure 3 is a partial enlarged view of the structure of the present invention.
  • the fretting fatigue test device for steel wire under radial impact conditions of the present invention is mainly composed of test bench 16, axial steel wire 14, steel wire tensioning device, radial contact device, impact device and spring
  • the reset device is composed of two steel wire tensioning devices, which are arranged symmetrically to each other. The two ends of the axial steel wire 14 are respectively fixed on the steel wire tensioning device, and the radial contact device, the impact device and the spring reset device are located At the middle of the axial steel wire 14.
  • the steel wire tensioning device includes an electric cylinder 1, a tension sensor 2 and a steel wire clamp 3 connected in sequence.
  • One end of the tension sensor 2 is connected to the piston threaded rod of the electric cylinder 1, and the other end is connected to the steel wire clamp 3.
  • the end of the axial steel wire 14 is embedded in the steel wire clamp 3, the steel wire clamp 3 is clamped by screws through the cover plate to ensure that the axial steel wire 14 does not slip when subjected to axial tension.
  • the positioning hole 10 is used to fix the impact electric cylinder 12.
  • the position of the radial contact device is adjusted at the same time, so that the center position of the punch 13 of the impact device is facing the wire contact position. Realize the impact test on different positions of the axial steel wire 14.
  • the axial steel wire 14 is assembled on the steel wire tensioning device, and the electric cylinder 1 is controlled by the controller to apply a predetermined initial tension to the axial steel wire 14;
  • the impact electric cylinder 12 is controlled by the computer to impact the axial steel wire 14; the impact speed of the impact electric cylinder 12 is changed, the output signals of different sensors are collected, and recorded on the computer to obtain the axial steel wire 14 under different impact speeds. Radial impact, radial impact displacement and axial tension received;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

L'invention concerne un appareil et un procédé de test de fatigue de contact destinés à un fil d'acier dans une condition d'impact radial. L'appareil de test comprend un banc de test (16) et un fil d'acier axial (14) ; les deux extrémités du fil d'acier axial (14) sont pourvues séparément d'un dispositif de tension et d'étirement de fil d'acier ; la position centrale du fil d'acier axial (14) est pourvue d'un dispositif de contact radial, d'un dispositif d'impact et d'un dispositif de réinitialisation de ressort ; par la fabrication du fil d'acier axial (14) en contact radial avec un fil d'acier de contact (17), une condition d'impact est simulée, la partie de contact du fil d'acier axial (14) est impactée radialement, un dispositif de contact radial impacté est réinitialisé, la même position de contact est impactée de manière répétée, et un déplacement d'impact est mesuré au moyen d'un capteur de déplacement (15). Les fils d'acier axiaux (14) sur des brides de fixation de fil d'acier (4) sont assemblés de manière symétrique et parallèle de façon à satisfaire une condition de contact ; le contact entre les fils d'acier est garanti par la force de tension du ressort du dispositif de repos de ressort ; en ajustant une distance entre le ressort (8) et un bloc coulissant de rail de guidage (9), la force de tension du ressort venant en contact avec les deux côtés du fil d'acier axial (14) peut être commandée ; en modifiant la position du dispositif d'impact, la fatigue de contact du fil d'acier peut être recherchée dans les états d'impact de différentes positions.
PCT/CN2019/090617 2019-04-08 2019-06-11 Appareil et procédé de test de fatigue de contact destinés à un fil d'acier dans une condition d'impact radial WO2020206829A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910275581.2A CN109900566B (zh) 2019-04-08 2019-04-08 一种径向冲击工况下钢丝的微动疲劳试验装置及方法
CN201910275581.2 2019-04-08

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Cited By (1)

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CN113640096A (zh) * 2021-06-30 2021-11-12 哈尔滨工业大学（深圳） 一种用于辅助测量钢丝绳非线性刚度的装置

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CN111208022B (zh) * 2019-07-19 2021-02-26 中国矿业大学 一种横置钢丝绳径向冲击下张力振动检测分析方法及装置
CN110470543B (zh) * 2019-09-10 2024-04-26 洛阳理工学院 一种拉索预拉检测机
CN111089786B (zh) * 2020-01-21 2022-05-03 江苏师范大学 一种钢丝绳冲击破坏的试验装置及方法
CN112683502B (zh) * 2020-12-09 2022-08-19 中国航空工业集团公司沈阳飞机设计研究所 一种弯曲刚度试验测试设备
CN112683650A (zh) * 2020-12-09 2021-04-20 国核电站运行服务技术有限公司 一种高温高压水环境法向微动磨损试验装置
CN114199699B (zh) * 2021-11-26 2023-12-19 中国矿业大学 一种钢丝绳冲击快速滑移摩擦装置

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JPH06235689A (ja) * 1993-02-09 1994-08-23 Nippon Telegr & Teleph Corp <Ntt> 疲れ試験方法
CN101598647A (zh) * 2009-07-14 2009-12-09 中国矿业大学 一种钢丝微动疲劳试验机及方法
CN103411821A (zh) * 2013-08-22 2013-11-27 太原理工大学 一种钢丝绳失效的实验研究方法
CN105823696A (zh) * 2016-05-26 2016-08-03 中国矿业大学 超深立井缠绕式提升钢丝绳多轴摩擦疲劳损伤监测装置及方法
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113640096A (zh) * 2021-06-30 2021-11-12 哈尔滨工业大学（深圳） 一种用于辅助测量钢丝绳非线性刚度的装置
CN113640096B (zh) * 2021-06-30 2023-10-24 哈尔滨工业大学（深圳） 一种用于辅助测量钢丝绳非线性刚度的装置

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