KR20170061508A - The Footprint Measuring Equipment of Tire with Camber Angle - Google Patents

The Footprint Measuring Equipment of Tire with Camber Angle Download PDF

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Publication number
KR20170061508A
KR20170061508A KR1020150166654A KR20150166654A KR20170061508A KR 20170061508 A KR20170061508 A KR 20170061508A KR 1020150166654 A KR1020150166654 A KR 1020150166654A KR 20150166654 A KR20150166654 A KR 20150166654A KR 20170061508 A KR20170061508 A KR 20170061508A
Authority
KR
South Korea
Prior art keywords
tire
camber angle
ground
ground plane
shaft
Prior art date
Application number
KR1020150166654A
Other languages
Korean (ko)
Inventor
김동오
Original Assignee
금호타이어 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 금호타이어 주식회사 filed Critical 금호타이어 주식회사
Priority to KR1020150166654A priority Critical patent/KR20170061508A/en
Publication of KR20170061508A publication Critical patent/KR20170061508A/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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • 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
    • G01M17/021—Tyre supporting devices, e.g. chucks
    • 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
    • G01M17/027—Tyres using light, e.g. infrared, ultraviolet or holographic techniques

Abstract

The present invention relates to an apparatus for measuring a ground surface of a tire having a camber angle, wherein a tire installed in an actual vehicle improves the running stability of the vehicle by giving an arbitrary camber angle through an alignment operation. Therefore, real ground plane shape can be obtained through a ground plane measuring device of a tire having a camber angle, and realistic test data can be obtained. In addition, it is impossible to provide a mechanical camber angle on the load plate because glass is installed on the load plate and the camera is installed on the bottom for measuring the ground shape and ground pressure of the optical system. A device for measuring a ground surface of a tire having a camber angle in which an end of a tire supporting shaft supported by a tire fixing device is formed in a spherical shape so as to be movable at an angle equal to a camber angle to a shaft on which a tire is mounted is combined with a circular bearing .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tread surface measuring apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tread surface measuring apparatus for measuring the shape of a tire's footprint, in which a ground surface measuring apparatus has a camber angle so as to obtain ground data To a tire ground plane measuring apparatus having a camber angle.

As shown in Figs. 1 and 2, a conventional tread surface measuring apparatus includes a fixed support for supporting a tread surface on both sides of a test tire such that the tread surface is spaced from the ground by a predetermined distance, And a load device for applying a vertical load to the tire through the load plate. In this case, as shown in Fig. 1, a method of raising the load plate in a state in which the tire supporting shaft is fixed as shown in Fig. 1, or a method of lifting the load plate in a state in which the load plate is fixed It is possible to measure the ground surface shape or the pressure distribution of the deformed tire according to the vehicle load when the tire is grounded on the road surface by adjusting the vertical load applied to the tire of the actual vehicle.

In the conventional method of measuring the ground surface, a paper is placed on the top of the plate, and ink is applied to the surface of the tire to be measured, and a foot print taken on the paper is obtained by applying a load. Recently, As shown in Fig. 1, a glass plate and a light source are provided at both ends of the glass plate using optical grounding method to obtain a ground plane image by applying a load to the tire and using a camera installed at the bottom of the ground plane.

However, the characteristics of the ground surface in the conventional vertical load can not represent the characteristic of the tire in a real vehicle.

Meanwhile, Patent Document 1 of KR2007-0097253 B1 is a tester capable of measuring a ground surface by giving a camber angle to a tire, and is a patent designed to give a camber angle to the load plate structure. It is possible to measure the ground plane of a tire by giving a camber angle, but it is impossible to make a complicated plate structure to mount a camera on an optical glass plate and a bottom.

JP2000-186982 A Patent Document 2 discloses an indoor tire tread surface analysis apparatus capable of adjusting a camber angle. In order to constitute a load device for giving a vertical load to a tire, a circular rail There is a problem that the device configuration is complicated and the volume of the device becomes large.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tire ground plane measuring apparatus and a tire ground plane measuring apparatus, And a tire ground plane measuring device having a camber angle that allows a tire to be designed using realistic data.

In order to achieve the above object, according to the present invention, there is provided an apparatus for measuring a ground surface of a tire having a camber angle, comprising: a glass plate and a camera for photographing a ground shape between the tire and the ground, So that the ends of the respective tire support shafts on which the tires are mounted are fluidically moved so as to impart a camber angle to the tires.

It is also desirable that each of the tire shaft securing apparatuses supported on the two fixed support rods can independently move so that the tire support shaft can be moved and moved at an angle.

It is also preferable that the ends of the respective tire support shafts supported by the respective tire shaft fixing devices are formed in a spherical shape and the circular bearings are engaged.

It is preferable that an end of the one tire supporting shaft to which the circular bearing is coupled is fixed to the tire shaft fixing device and an end of the other tire supporting shaft to which the circular bearing is coupled is axially movable according to the angle.

As described above, according to the tread surface measuring apparatus of the present invention having the camber angle, it is possible to obtain the actual ground surface shape of the tire provided in the vehicle and having the camber angle, and realistic test data can be obtained.

Further, according to the tread surface measuring apparatus of the present invention having the camber angle, the same result can be obtained by a simple configuration as compared with a device for directly measuring the tread surface of a tire installed in a real vehicle, There are other effects that can be.

FIG. 1 is a plan view of a conventional vertical load ground plane measuring apparatus
Fig. 2 is a view showing a tire supporting shaft moving method
FIG. 3 is a view illustrating a measurement method using a glass plate and a light source using an optical system,
4 is a schematic view of a ground plane measurement test apparatus used in the present invention.
Fig. 5 is a schematic view of a test apparatus for measuring a ground plane when a camber angle is given

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a ground plane measuring apparatus for a tire having a camber angle according to the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

Tires in a real vehicle are not grounded vertically on the road surface but tilted at a certain angle, which is called a camber. Therefore, it is desirable to measure the camber angle in consideration of the ground plane of the tire or the ground pressure distribution. Thus, the tires installed in the vehicle actually provide an arbitrary camber angle through the alignment operation to improve the stability of the vehicle.

FIG. 4 is a schematic view of a ground plane measurement test apparatus used in the present invention, and FIG. 5 is a schematic diagram of a ground plane measurement test apparatus when a camber angle is given.

As shown in FIGS. 4 and 5, the glass plate 1 and the camera 2 in the ground plane measuring method using the optical system are configured in the present invention to constitute the ground plane measuring apparatus of the tire having the camber angle, Is used to fix the glass plate 1 and to correspond to the camber angle of the test tire T by using the tire shaft fixing device 3 and the tire supporting shaft 4 supported thereon.

In order to provide the camber angle to the ground surface measuring apparatus in accordance with the camber angle of the test tire T, the tire supporting shaft 4 on which the test tire T is mounted is maintained at the same angle as the camber angle, ) And the ground.

To this end, in the present invention, the camera 2 grounds the test tire T on the lower glass plate 1, and the fixed support 5, which is installed on both sides of the test tire T, The tire supporting shaft 4 is connected to each of the tire shaft fixing devices 3 so as to be connected to the center axis of the test tire T, It is.

It is necessary that the tire shaft fixing devices 3 move independently from each other at the two fixed support rods 5 supporting the tire support shaft 4 and move up and down on the two fixed support rods 5 at different positions, The ends of the respective tire supporting shafts 4, which are respectively supported by the fixing device 3, must be fluidly moved, not fixed. To this end, each end of the tire supporting shaft 4 is formed into a spherical shape, and the end of the spherical shape is wrapped around the circular bearing 6 so that the tire supporting shaft 4 can be moved in a fluid manner even if the tire supporting shaft 4 has a camber angle .

In order to have a camber angle while the tire shaft fixing device 3 moves independently and vertically on the two fixed support rods 5, the end of one tire supporting shaft 4 wrapped with the circular bearing 6, that is, 4 and 5, the end of the right tire support shaft 4 is fixed to the tire axis fixing device 3, and the end of the other tire support shaft 4, that is, The end of the tire supporting shaft 4 is supported by the tire shaft fixing device 3 so that it can move in the axial direction.

Although the present invention has been described with reference to the drawings, it is to be understood that the invention is not limited to the disclosed embodiments, It is needless to say that various modifications can be made by those skilled in the art within the scope of technical thought.

1: Glass plate
2: Camera
3: Tire shaft fixing device
4: Tire support shaft
5: Fixed support
6: Circular bearing
T: Test tire

Claims (4)

A ground plane measuring apparatus provided with a glass plate and a camera so as to photograph a shape of a ground between a tire and the ground,
Characterized in that the end of each of the tire support shafts on which the tires are mounted is movably supported so as to give a camber angle to the tires, Ground plane measuring device. The method according to claim 1,
Characterized in that each of the tire shaft securing devices supported by the two fixed support rods is independently movable so as to move the tire support shaft in an alternating manner. 3. The method of claim 2,
Wherein an end of each of the tire supporting shafts supported by each of the tire shaft fixing devices is formed into a spherical shape and a circular bearing is coupled to the grounding surface of the tire. The method of claim 3,
Wherein an end of one of the tire supporting shafts to which the circular bearing is coupled is fixed to the tire shaft fixing device and an end of the other tire supporting shaft to which the circular bearing is coupled is axially movable according to an angle. Tire ground plane measuring device.
KR1020150166654A 2015-11-26 2015-11-26 The Footprint Measuring Equipment of Tire with Camber Angle KR20170061508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150166654A KR20170061508A (en) 2015-11-26 2015-11-26 The Footprint Measuring Equipment of Tire with Camber Angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150166654A KR20170061508A (en) 2015-11-26 2015-11-26 The Footprint Measuring Equipment of Tire with Camber Angle

Publications (1)

Publication Number Publication Date
KR20170061508A true KR20170061508A (en) 2017-06-05

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KR1020150166654A KR20170061508A (en) 2015-11-26 2015-11-26 The Footprint Measuring Equipment of Tire with Camber Angle

Country Status (1)

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KR (1) KR20170061508A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102145349B1 (en) 2019-09-10 2020-08-18 금호타이어 주식회사 Pressure Calibration Kit and Calibration Method for Optical Tire Contact Pressure Measuring Tester
KR20210045598A (en) 2019-10-17 2021-04-27 금호타이어 주식회사 Measuring method of tread block friction energy of finished tire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102145349B1 (en) 2019-09-10 2020-08-18 금호타이어 주식회사 Pressure Calibration Kit and Calibration Method for Optical Tire Contact Pressure Measuring Tester
KR20210045598A (en) 2019-10-17 2021-04-27 금호타이어 주식회사 Measuring method of tread block friction energy of finished tire

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