KR20070051497A - Shear strain measurement apparatus of tire - Google Patents

Shear strain measurement apparatus of tire Download PDF

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Publication number
KR20070051497A
KR20070051497A KR1020050109133A KR20050109133A KR20070051497A KR 20070051497 A KR20070051497 A KR 20070051497A KR 1020050109133 A KR1020050109133 A KR 1020050109133A KR 20050109133 A KR20050109133 A KR 20050109133A KR 20070051497 A KR20070051497 A KR 20070051497A
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South Korea
Prior art keywords
tire
shear deformation
measuring
load
support frame
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KR1020050109133A
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Korean (ko)
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KR100725864B1 (en
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손재홍
임동규
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한국타이어 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
    • B60C25/002—Inspecting tyres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/09—Testing or calibrating during manufacturing

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

본 발명은 타이어에 하중이 작용하였을 때 벨트부의 전단변형을 측정하는 타이어의 전단변형 측정장치에 관한 것으로, 더욱 상세하게는 하중 부가장치에 설치된 전단변형 측정부를 이용하여 벨트부에서 발생하는 변형을 정량적으로 측정하여 타이어 주행 내구성 향상에 도움을 주는 데이터를 얻기 위한 타이어의 전단변형 측정장치에 관한 것이다.The present invention relates to a shear deformation measuring apparatus of a tire for measuring shear deformation of a belt when a load is applied to the tire. The present invention relates to a shear deformation measuring apparatus of a tire for obtaining data to help improve tire running durability.

즉, 이를 위해 측정할 타이어(1)를 지지축(2)을 이용하여 고정하는 고정대(3)와, 상기 타이어(1)의 측정부분(1a)에 하중을 가하는 하중 부가부(4) 및, 이 하중 부가부(4)의 일측변에 설치되어 타이어(1)의 측정부분(1a)을 관측할 수 있는 전단변형 측정부(5)로 이루어지되, 상기 전단변형 측정부(5)는 지지프레임(6)과 이 지지프레임(6)을 가로질러 설치되는 안내봉(7) 및 이들 지지프레임(6)과 안내봉(7)을 따라 상하좌우 이동이 자유로운 전단변형 측정창(8)으로 이루어져 있다.That is, for this purpose, a fixing table 3 for fixing the tire 1 to be measured using the support shaft 2, a load adding unit 4 for applying a load to the measuring portion 1a of the tire 1, and It is composed of a shear deformation measuring part 5 which is installed on one side of the load adding part 4 to observe the measuring part 1a of the tire 1, and the shear deformation measuring part 5 is a support frame. (6) and a guide rod (7) installed across the support frame (6) and a shear deformation measurement window (8) free to move up, down, left and right along these support frames (6) and guide rods (7). .

Description

타이어의 전단변형 측정장치{Shear strain measurement apparatus of tire}Shear strain measurement apparatus of tire

도 1은 본 발명에 따른 타이어의 전단변형 측정장치를 나타낸 구성도,1 is a configuration diagram showing a shear deformation measuring apparatus of a tire according to the present invention,

도 2는 본 발명에 따른 전단변형 측정장치의 확대 정면도,2 is an enlarged front view of a shear deformation measuring apparatus according to the present invention;

도 3은 타이어가 하중을 받은 상태에서 변형이 생긴 것을 본 발명에 의하여 그 변형선을 측정한 상태의 사진이다.3 is a photograph of a state in which deformation lines are measured according to the present invention that deformation occurs in a state where a tire is loaded.

-도면의 주요부분에 대한 부호의 설명-Explanation of symbols on the main parts of the drawing

1 : 타이어, 2 : 지지축,1: tire, 2: support shaft,

3 : 고정대, 4 : 하중 부가부,3: fixing rod, 4: loading part,

5 : 전단변형 측정부, 6 : 지지 프레임,5: shear deformation measuring unit, 6: support frame,

7 : 안내봉, 8 : 전단변형 측정창,7: guide rod, 8: shear strain measurement window,

9a,9b : 수직 및 수평 기준선,9a, 9b: vertical and horizontal baseline,

10 : 쇼울더부.10: shoulder part.

본 발명은 타이어에 하중이 작용하였을 때 벨트부의 전단변형을 측정하는 타이어의 전단변형 측정장치에 관한 것으로, 더욱 상세하게는 하중 부가장치에 설치 된 전단변형 측정부를 이용하여 벨트부에서 발생하는 변형을 정량적으로 측정하여 타이어 주행 내구성 향상에 도움을 주는 데이터를 얻기 위한 타이어의 전단변형 측정장치에 관한 것이다.The present invention relates to a shear deformation measuring apparatus of a tire for measuring the shear deformation of the belt when a load is applied to the tire, and more particularly to the deformation occurring in the belt unit by using the shear deformation measuring unit installed in the load adding device. The present invention relates to a shear deformation measuring apparatus of a tire for obtaining data that helps to improve tire running durability by measuring quantitatively.

타이어는 도로 위를 주행하므로 다양한 사고를 발생할 수 있는바, 주행 중 타이어에서 발생하는 사고는 벨트부와 비드(Bead)부로 크게 분류할 수 있으며, 이중 후자인 저압의 고하중에 의한 비드부 사고를 제외하고는 대부분 벨트부에서 사고가 발생하게 된다.Since tires travel on the road, various accidents can occur, and accidents occurring in tires can be classified into belt parts and bead parts, except for the latter due to the high load of low pressure. In most cases, an accident occurs in the belt part.

주행중인 타이어의 벨트부에서 주로 사고가 발생하는 이유는 타이어가 가지고 있는 구조적 특징 때문으로, 타이어의 벨트층은 스틸코드와 고무의 복합재료로 구성되어 있어서 이 복합재료 특성상 벨트 끝단에서는 타이어의 트레드가 접지면에서 하중을 받을 때 전단변형(Shear strain)을 가장 많이 발생하게 된다.The main cause of accidents in the belt part of a running tire is due to the structural characteristics of the tire. The belt layer of the tire is made of a composite of steel cord and rubber. Shear strain occurs most frequently when loaded on the ground plane.

즉 전단변형이 가장 크게 발생하는 벨트층 끝단에서 가장 높은 발열이 발생하게 되고, 이로 인해 고무물성이 약화되어 크랙(Crack)이 시작된다.That is, the highest heat generation occurs at the end of the belt layer where shear deformation occurs the most, which causes the rubber property to be weakened and cracks begin.

여기서 크랙이란 타이어의 트레드부와 사이드부에 생기는 고무 갈라짐 현상으로 타이어가 주행 중에 타이어 변형으로 인하여 트레드 고무에 반복신축이 일어나서 발생하게 된다.In this case, the crack is a rubber cracking phenomenon occurring in the tread part and the side part of the tire and is caused by repeated stretching and contraction of the tread rubber due to the tire deformation while the tire is running.

따라서 타이어 벨트부의 전단변형을 측정하는 것은 타이어 주행 내구성 측면에서 중요한 의미를 갖으며, 정확한 전단변형의 측정은 타이어 내구성 개선에 도움을 줄 수 있는 기초 데이터로 활용될 수가 있다.Therefore, measuring the shear deformation of the tire belt portion has an important meaning in terms of tire running durability, and accurate shear deformation measurement can be used as basic data that can help improve tire durability.

이에 본 발명은 이와 같은 점을 참고하여 발명된 것으로, 타이어의 벨트부에서 발생하는 전단 변형량을 정량적으로 측정하여 타이어의 벨트 내구성 평가를 수행할 수 있는 타이어의 전단변형 측정장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been invented with reference to the above-mentioned point, and an object thereof is to provide a shear deformation measuring apparatus of a tire capable of quantitatively measuring shear deformation occurring in a belt portion of a tire to evaluate belt durability of the tire. have.

상기와 같은 목적을 달성하기 위한 본 발명은 측정할 타이어를 지지축을 이용하여 고정하는 고정대와, 상기 타이어의 측정부분에 하중을 가하는 하중 부가부 및, 이 하중 부가부의 일측변에 설치된 전단변형 측정부로 이루어지되, 상기 전단변형 측정부는 지지프레임과 이 지지프레임을 가로질러 설치되는 안내봉 및 이들 지지프레임과 안내봉을 따라 상하좌우 이동이 자유로운 전단변형 측정창으로 이루어져 있다.The present invention for achieving the above object is a support for fixing the tire to be measured by using a support shaft, a load addition portion for applying a load to the measurement portion of the tire, and a shear deformation measurement unit provided on one side of the load addition portion Wherein, the shear deformation measuring section is composed of a support frame and a guide rod installed across the support frame and a shear deformation measurement window free to move up and down, left and right along these support frames and guide rods.

이하, 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명이 설치된 전체 구성도이고, 도 2는 본 발명에 따른 전단변형 측정창의 정면도이다.1 is an overall configuration diagram installed the present invention, Figure 2 is a front view of a shear deformation measurement window according to the present invention.

본 발명은 도면에 도시된 바와 같이 측정할 타이어(1)를 지지축(2)을 이용하여 고정하는 고정대(3)와, 상기 타이어(1)의 측정부분(1a)에 하중을 가하는 하중 부가부(4) 및, 이 하중 부가부(4)의 일측변에 설치되어 타이어(1)의 측정부분(1a)을 관측할 수 있는 전단변형 측정부(5)로 이루어지되, 상기 전단변형 측정부(5)는 지지프레임(6)과 이 지지프레임(6)을 가로질러 설치되는 안내봉(7) 및 이들 지지프레임(6)과 안내봉(7)을 따라 상하좌우 이동이 자유로운 전단변형 측정창(8)으로 이루어져 있다.According to the present invention, as shown in the drawing, a support 3 for fixing the tire 1 to be measured by using the support shaft 2 and a load applying unit for applying a load to the measurement portion 1a of the tire 1 (4) and a shear deformation measuring part 5 provided at one side of the load adding part 4 to observe the measuring portion 1a of the tire 1, wherein the shear deformation measuring part ( 5 is a support frame (6) and a guide rod (7) installed across the support frame (6) and a shear deformation measurement window free to move up and down, left and right along these support frame (6) and guide rod (7) 8)

여기서 상기 전단변형 측정창(8)에는 수직 및 수평 기준선(9a,9b)을 따라 각도가 표시되어 있다.Here, the shear deformation measurement window 8 is marked with angles along vertical and horizontal reference lines 9a and 9b.

그리고 상기 타이어(1)의 측정부분(1a)은 쇼울더부(10)의 고무를 제거하여 타이어(1)의 측면에서 이 타이어(1)의 벨트층이 보이도록 하는데, 이때 고무를 제거하는 측정부분(1a)의 크기는 길이가 약 10㎝ 정도가 적당하며, 고무를 제거한 단면에서 수직선을 만들어 측정기준이 되도록 한다.In addition, the measuring portion 1a of the tire 1 removes the rubber of the shoulder portion 10 so that the belt layer of the tire 1 is visible from the side of the tire 1, in which the measuring portion removes the rubber. The size of (1a) is about 10cm in length, and make a vertical line from the cross section where rubber is removed to be the standard of measurement.

이어 본 발명의 작업방법을 설명한다.Next, the working method of the present invention will be described.

측정할 타이어(1)의 측정부분(1a)을 준비하여 측정준비가 끝나면, 고정대(3)의 지지축(2)에 타이어(1)를 고정시킨 후 하중 부가부(4)를 이용하여 도 1의 화살표 방향으로 하중을 가한다.After the measurement part 1a of the tire 1 to be measured is prepared and the measurement preparation is completed, the tire 1 is fixed to the support shaft 2 of the holder 3 and then the load adding part 4 is used to FIG. 1. Apply the load in the direction of the arrow.

이렇게 하중을 부가하면 타이어(1)의 전단변형을 측정하기 위한 준비가 완료된 상태로서, 전단변형 측정부(5)의 전단변형 측정창(8)을 이용하여 타이어(1)의 전단변형 측정창(8)은 상하좌우로 이동이 가능하여 타이어(1)에 표시된 기준선과 0점을 맞춘 상태에서 각도를 측정한다.When the load is applied in this way, the preparation for measuring the shear deformation of the tire 1 is completed, and the shear deformation measurement window of the tire 1 using the shear deformation measurement window 8 of the shear deformation measurement unit 5 ( 8) can be moved up, down, left and right, and the angle is measured in a state where 0 points are aligned with the reference line marked on the tire (1).

도 3의 사진의 수직선을 그은 기준선이 하중을 받으면서 심하게 변형이 생기는 현상을 확인할 수 있으며, 변형 기준선(11)은 곡선이 아니라 직선이기 때문에 정확한 변형각도(θ)를 측정할 수 있다.It can be seen that the deformation occurs severely while the reference line drawn the vertical line of the photo of Figure 3, and the deformation reference line 11 is a straight line rather than a curve, it is possible to measure the exact deformation angle (θ).

여기서 상기 변형각도(θ)가 클수록 타이어(1)의 벨트부에서 발생하는 전단 변형량이 많다는 것을 의미하기 때문에 타이어 설계 측면에서는 이 측정 변형각도(θ)가 작게 발생하는 방향으로 설계를 해야 타이어의 벨트 내구성을 개선시킬 수가 있다.Here, the larger the deformation angle θ, the greater the amount of shear deformation that occurs in the belt portion of the tire 1. Therefore, in terms of tire design, the design should be designed in a direction in which the measured deformation angle θ occurs small. Durability can be improved.

상기와 같이 본 발명에 따른 타이어의 전단변형 측정장치는 타이어의 벨트부에서 발생하는 전단 변형량을 정확하게 정량적으로 측정하여 타이어 벨트 내구성을 평가하는 데이터를 제공하여 타이어 내구성 향상에 도움을 줄 수 있는 이점을 갖는다.As described above, the apparatus for measuring the shear deformation of a tire according to the present invention provides an advantage of helping to improve tire durability by providing data evaluating tire belt durability by accurately and quantitatively measuring the amount of shear deformation occurring in the belt portion of a tire. Have

Claims (2)

측정할 타이어(1)를 지지축(2)을 이용하여 고정하는 고정대(3)와, 상기 타이어(1)의 측정부분(1a)에 하중을 가하는 하중 부가부(4) 및, 이 하중 부가부(4)의 일측변에 설치되어 타이어(1)의 측정부분(1a)을 관측할 수 있는 전단변형 측정부(5)로 이루어지되, 상기 전단변형 측정부(5)는 지지프레임(6)과 이 지지프레임(6)을 가로질러 설치되는 안내봉(7) 및 이들 지지프레임(6)과 안내봉(7)을 따라 상하좌우 이동이 자유로운 전단변형 측정창(8)으로 이루어진 타이어의 전단변형 측정장치.A holding table 3 for fixing the tire 1 to be measured using the support shaft 2, a load adding unit 4 for applying a load to the measuring portion 1a of the tire 1, and the load adding unit (4) is provided on one side of the shear strain measurement section (5) for observing the measuring portion (1a) of the tire (1), the shear deformation measurement section (5) is the support frame (6) and Measuring shear deformation of a tire comprising a guide rod 7 installed across the support frame 6 and a shear deformation measurement window 8 freely moving up, down, left, and right along the support frame 6 and the guide rod 7 Device. 제 1항에 있어서, 상기 전단변형 측정창(8)에는 수직 및 수평 기준선(9a,9b)을 따라 각도가 표시되어 이루어진 것을 특징으로 하는 타이어의 전단변형 측정장치.2. The shear deformation measuring apparatus according to claim 1, wherein the shear deformation measuring window (8) has an angle displayed along vertical and horizontal reference lines (9a, 9b).
KR1020050109133A 2005-11-15 2005-11-15 Shear strain measurement apparatus of tire KR100725864B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009151745A2 (en) * 2008-04-03 2009-12-17 Tufts University Shear sensors and uses thereof
KR200475756Y1 (en) * 2013-08-19 2015-01-02 한국타이어 주식회사 Measuremewnt apparatus for tire groove strain
CN111473981A (en) * 2020-04-22 2020-07-31 西安航空制动科技有限公司 Wheel temperature-height test device and use method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604357B (en) * 2013-04-26 2016-09-07 中国人民解放军后勤工程学院 A kind of Vertical Steel Oil Tank roof deformation measurement method and instrument

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Publication number Priority date Publication date Assignee Title
FR2841336A1 (en) * 2002-06-24 2003-12-26 Michelin Soc Tech MEASURING THE MAXIMUM ADHESION COEFFICIENT FROM MEASURING STRESSES IN A TIRE STICK

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009151745A2 (en) * 2008-04-03 2009-12-17 Tufts University Shear sensors and uses thereof
WO2009151745A3 (en) * 2008-04-03 2010-02-25 Tufts University Shear sensors and uses thereof
KR200475756Y1 (en) * 2013-08-19 2015-01-02 한국타이어 주식회사 Measuremewnt apparatus for tire groove strain
CN111473981A (en) * 2020-04-22 2020-07-31 西安航空制动科技有限公司 Wheel temperature-height test device and use method thereof

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