KR101729421B1 - Device for checking wear tyre - Google Patents

Device for checking wear tyre Download PDF

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Publication number
KR101729421B1
KR101729421B1 KR1020150184722A KR20150184722A KR101729421B1 KR 101729421 B1 KR101729421 B1 KR 101729421B1 KR 1020150184722 A KR1020150184722 A KR 1020150184722A KR 20150184722 A KR20150184722 A KR 20150184722A KR 101729421 B1 KR101729421 B1 KR 101729421B1
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KR
South Korea
Prior art keywords
tire
measuring
pin
guide
present
Prior art date
Application number
KR1020150184722A
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Korean (ko)
Inventor
고경득
Original Assignee
금호타이어 주식회사
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Priority to KR1020150184722A priority Critical patent/KR101729421B1/en
Application granted granted Critical
Publication of KR101729421B1 publication Critical patent/KR101729421B1/en

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    • 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
    • G01B5/18—Measuring arrangements characterised by the use of mechanical techniques for measuring depth
    • 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
    • G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
    • 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
    • G01B5/0025—Measuring of vehicle parts
    • 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
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
    • G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Tires In General (AREA)

Abstract

The present invention provides an apparatus to inspect abrasion of a tire. According to the present invention, the apparatus to inspect abrasion of a tire comprises: a tire supporter which fixates the tire; an elevator bar fixated on a measuring module, rising and falling to elevate or lower the tire measuring module placed on a top of a tread unit of the tire towards the tread unit; and a guide member inserted into a guide hole on one side to guide the measuring module to rise and fall. The measuring module comprises: a measuring pin flow hole formed on a bottom surface which faces the tread unit, and which is penetrated to guide a measuring pin to move straight; and a shape memory alloy plate material which fixates an end unit of the measuring pin and which is deformed only for the displacement of the other end unit of the measuring pin by the tire. Accordingly, the present invention is able to precisely measure a status of abrasion of the tire with almost no measurement error with a contact method; be excellently reliable; allow movement; and have less environmental limitations.

Description

[0001] The present invention relates to a device for checking wear wear,

More particularly, the present invention relates to a tire wear condition inspection apparatus capable of precisely measuring a wear state of a tire with little measurement error in a contact method, and thus has excellent reliability, is movable, To a tire wear condition inspection apparatus.

BACKGROUND OF THE INVENTION [0002] Treads made of tread, carcass, and bead are generally one of the major components that determine the driving safety of an automobile. Especially, Braking force and steering performance.

Tread wear of an automobile tire may cause uneven wear due to driving habit of a driver of an automobile, an automobile condition, and an air pressure condition of a tire as well as natural wear which tread wear occurs uniformly depending on the use time of the tire, Wear and lap wear also have a significant impact on vehicle safety.

As an apparatus for inspecting the condition of a tread of such a tire, Korean Patent Publication No. 2012-55071 discloses an apparatus for inspecting a tread state of a tire, comprising an image acquisition unit for photographing a tire image of a passing automobile installed on an entrance / exit road of a parking lot or a highway toll gate, An image analysis control unit for analyzing a tire image photographed by the image acquisition unit and controlling an operation state of the image acquisition unit, a display unit for displaying the state analysis information of the tire analyzed by the image analysis control unit to the vehicle driver, An image analysis control unit, and a power supply unit for supplying power to the display unit, thereby detecting the tread wear, the air pressure, and the curing condition of the automobile tire. However, since the equipment is large and expensive, The environmental factors of the test were limited.

In addition to these technologies, there are devices for checking the abnormality of the tire tread by measuring the reflected amount by irradiating (irradiating) the tire using ultrasonic waves, radiation or a general light source (Light Source, Laser) The EMED and the footprint had to be removed from the tire and tested with the test equipment, so that the longer the distance from the test site to the test equipment, the more time was spent.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a tire wear state inspection apparatus which can precisely measure a wear state of a tire with little measurement error in a contact manner, .

In order to solve the above-described problems, the present invention provides a tire testing apparatus for testing a tire, comprising: a tire support for fixing a tire; and a measuring module fixed to the measuring module for raising or lowering the tire measuring module located above the tread portion of the tire, A guide member inserted into a guide hole at one side thereof for guiding the measurement module to ascend and descend, and a measurement member having a measurement pin And a shape memory alloy plate which fixes an end of the measuring pin and is deformed by a displacement of the other end of the measuring pin by a tire.

According to an embodiment of the present invention, a displacement sensor may be provided in the measurement pin flow hole to sense displacement moving along the measurement pin flow hole of the measurement pin.

According to another embodiment of the present invention, the shape memory alloy plate material may further include a heating portion.

According to the tire wear condition inspecting apparatus of the present invention, it is possible to precisely measure the wear state of a tire with little measurement error in a contact method, and therefore, the reliability is excellent, and movement is possible, so that environmental restriction factors are small.

1 is a schematic view showing the overall structure of an inspection apparatus according to the present invention,
Fig. 2 is a view showing a shape in which a tire is mounted on a tire support and a measurement module is placed.
3 is a sectional view showing the internal configuration of the measurement module,
4 is a view showing a shape in which a displacement of a measuring pin occurs when the measuring module of the present invention touches the tread portion of the tire,
Fig. 5 is a graph showing an operating state (a, b) for measuring the reference height Ho up to the reference tire tread by lowering the measurement module at the start position SP and an operating state c, and d, respectively.

Hereinafter, the present invention will be described in detail.

It is to be noted, however, that the technical terms used in the present invention are used only for describing specific embodiments, and are not intended to limit the present invention.

In addition, the technical terms used in the present invention should be construed in a sense generally understood by a person having ordinary skill in the art to which the present invention belongs, unless otherwise defined in the present invention, Or technical terms used in the present invention are erroneous technical terms that do not accurately represent the spirit of the present invention, it is to be understood that the technical terms used herein are not to be construed in a technical sense And the generic term used in the present invention should be construed in accordance with the predefined or prior context and should not be construed in an excessively reduced meaning, The expression of the plural, unless the context clearly dictates otherwise. In the present invention, terms such as "comprising" or "comprising" and the like should not be construed as encompassing various elements or various steps of the invention, It should be understood that the steps may not be included, or may be further comprised of additional components or steps, and in the description of the present invention, if it is determined that the detailed description of the related art is not sufficient to overcome the gist of the present invention A detailed description thereof will be omitted.

FIG. 2 is a view showing a configuration in which a tire is mounted on a tire support and a measurement module is placed. FIG. 3 is a cross-sectional view showing the internal configuration of the measurement module, Respectively,

FIG. 4 is a view showing a shape in which the measuring pin is displaced when the measuring module of the present invention touches the tread portion of the tire. FIG. 5 is a view showing a state in which the measuring module is lowered at the start position SP, (C, d) before and after the operation for measuring the measurement height Hs from the state (a, b) before and after the operation for measuring the hoop Ho to the worn tire and the description thereof with reference to the drawings.

The apparatus for testing wear of a tire according to the present invention comprises a tire support 300 for fixing a tire 100 and a tire measurement module 400 located above the tread 110 of the tire in a direction toward the tread portion A guide member 600 inserted into a guide hole at one side thereof for guiding the measurement module to ascend and descend, and the measurement module 400, A measurement pin flow hole 430 penetrating the lower surface 410 facing the tread portion 110 to guide the linear movement of the measurement pin 420 and the other end of the measurement pin And a shape memory alloy plate 450 which is deformed by a displacement displaced by a tire.

The tire wear inspection apparatus 1000 includes a pedestal 700 for supporting the load of the inspection apparatus and a vertical member 800 standing on the pedestal for supporting the tire support 300, And a horizontal member 900 extending in one direction from the vertical member so that the lifting bar 500, the guide member 600, and the lifting operation portion M are fixed.

The pneumatic tire may include a tire support 300 extending in one direction of the vertical member in a state where the air is injected, The tire support 300 includes a bolt 310 through which a tire can be fixed by passing through a bolt hole 210 formed in a tire wheel and is fixed to a fastening member 320 such as a nut can do.

The elevating bar 500 is fixed on one surface of the measuring module to elevate or lower the tire measuring module 400 located on the tread portion 110 of the tire in the direction toward the tread portion 110, And a piston that is fixed to the horizontal member 900 and operated by an elevating operation portion M for supplying hydraulic pressure or air pressure. In addition, the elevating operation portion M may be provided with a servo When the servomotor is employed, one gear is provided at the end portion of the rotary shaft of the servo motor. To the elevating bar, gears meshing with the teeth of the one gear are gear- .

One end of the guide member 600 inserted into the guide hole 440 at one side thereof is fixed to the horizontal member 900 to guide the measurement module 400 to ascend and descend, To guide the linear motion of the measuring module.

The detailed configuration of the measuring module 400 that ascends and descends along the guide member 600 includes a measuring pin 420, a measuring pin flow hole 430, and a shape memory alloy plate 450, And the other end fixed to the shape memory alloy plate 450 and the other end portion contacting the tread portion of the tire and the measuring pin flow hole 430 provided in the bottom portion 402 of the measurement module, And the cross section may be formed in a circular shape, a 3, 4, or a polygonal shape within a range in which deformation does not occur when the tread portion is touched.

The end of the shape memory alloy plate 450 which is pressed by the other end of the measuring pin 420 is welded or fixed by a bolt / nut fastening structure, The shape memory alloy plate material may be deformed, and the shape memory alloy plate material is not particularly limited as long as it is a material that can be recovered by the heat applied by the heating portion after the shape is deformed, but an alloy of nickel and titanium ) Nitinol (55-nitinol) can be used.

The shape of the shaped alloy plate is deformed by the measuring pin according to the curvature and the wear state of the tread portion. The displacements (d1, d2) falling down to the surface of the tread portion to which the measuring pin touches are different according to the measuring position of the tread portion, In this case, the displacement sensors s1, s2, ..., sn disposed adjacent to the measuring pin flow hole 430 measure the displacement (d1, d2, .., dn ) Can be read.

In detail, the operation of the inspection apparatus of the present invention will be described in detail. The reference tire 100 ', which is unused after manufacture and has no wear, is mounted on a tire support table, the elevation bar is lowered at the start position SP, (Ho) to the position where the shape memory alloy plate material is deformed by being brought into close contact with the tire tread portion and the displacement pin (sn) sensed by the displacement sensor (sn) (d10, d20, .. dn0) in the control unit (not shown), and then returns the elevation bar to the start position SP.

Then, the worn tire 100 '' to be measured is placed on the tire support, the elevation bar is lowered at the start position SP, and the measurement pin is brought into close contact with the tire tread portion to measure the position of the shape memory alloy plate The displacement value sensed by the displacement sensor sn is stored as the measured values d1s, d2s, ... dns at the time when additional deformation occurs in the formed memory alloy plate material, The wear of each tread part can be checked through comparison (Hs-Ho) between the height (Ho) and the measured height (Hs) of the measuring tire and comparison between the measured value and the reference value (dns-dn0) After completion, the shape memory alloy plate material is heated by applying power to the heating portion, and the wear state of the next measuring tire can be inspected by restoring the original state.

The tire 100, the reference tire 100 '
The worn tire 100 '', the tread portion 110,
The tire wheel 200, the bolt hole 210,
A tire support 300, a bolt portion 310,
The fastening member 320, the measurement module 400,
Measurement module bottom 402, measurement module bottom 410,
The measurement pin 420, the measurement pin flow hole 430,
A guide hole 440, a shape memory alloy plate 450,
A lifting bar 500, a guide member 600,
The pedestal 700, the vertical member 800,
A horizontal member 900, a tire wear state inspection apparatus 1000,
The elevating operation portion M, the displacement sensors s1, s2, ..., sn,
The displacements d1, d2, ..., dn,
The starting position SP, the reference height Ho,
Measurement height Hs, measurement pin reference displacement values d10, d20, ..dn0,
Additional displacement values d1s, d2s, ..dns

Claims (3)

A tire support for fixing the tire;
A lifting bar fixed to the measuring module to ascend or descend the tire measurement module in a direction toward the tread portion;
A guide member inserted into the guide hole at one side thereof to guide the measurement module up and down; And
The measuring module includes a measuring pin flow hole penetrating the lower surface opposite to the tread portion so as to guide the linear movement of the measuring pin and an end portion of the measuring pin being fixed to the other end portion of the measuring pin by a displacement And a shape memory alloy plate.
The method according to claim 1,
And a displacement sensor is provided in the measurement pin flow hole to sense a displacement that moves along the measurement pin flow hole of the measurement pin.
The method according to claim 1,
Wherein the shape memory alloy plate material further comprises a heating portion.
KR1020150184722A 2015-12-23 2015-12-23 Device for checking wear tyre KR101729421B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108304638A (en) * 2018-01-26 2018-07-20 中国航空工业集团公司沈阳飞机设计研究所 A kind of aero tyre largest amount of subsidence computational methods taken off under pressured state
CN112539690A (en) * 2020-12-14 2021-03-23 合肥市极点科技有限公司 Binocular-based visual tire wear measurement method
CN114739269A (en) * 2022-04-19 2022-07-12 通力轮胎有限公司 Device for acquiring tire outer contour deformation and model taking method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2957108B2 (en) 1995-05-10 1999-10-04 住友ゴム工業株式会社 Tire surface rubber thickness measuring device
JP5552925B2 (en) 2010-07-01 2014-07-16 横浜ゴム株式会社 Tire wear measurement system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2957108B2 (en) 1995-05-10 1999-10-04 住友ゴム工業株式会社 Tire surface rubber thickness measuring device
JP5552925B2 (en) 2010-07-01 2014-07-16 横浜ゴム株式会社 Tire wear measurement system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108304638A (en) * 2018-01-26 2018-07-20 中国航空工业集团公司沈阳飞机设计研究所 A kind of aero tyre largest amount of subsidence computational methods taken off under pressured state
CN112539690A (en) * 2020-12-14 2021-03-23 合肥市极点科技有限公司 Binocular-based visual tire wear measurement method
CN114739269A (en) * 2022-04-19 2022-07-12 通力轮胎有限公司 Device for acquiring tire outer contour deformation and model taking method

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