CN212400793U - Tire envelope test device - Google Patents
Tire envelope test device Download PDFInfo
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- CN212400793U CN212400793U CN202020918655.8U CN202020918655U CN212400793U CN 212400793 U CN212400793 U CN 212400793U CN 202020918655 U CN202020918655 U CN 202020918655U CN 212400793 U CN212400793 U CN 212400793U
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Abstract
The utility model provides a tire envelope test device, include: the spherical reflection bracket is arranged on the tire and is provided with a spherical reflection part which protrudes out of one side surface of the tire along the axial direction of the tire; the distance meter support surrounds the spherical reflection part and is arranged around the spherical reflection part; the range finder is arranged on the range finder bracket and emits and receives light beams towards the spherical reflection part; and the workstation is in communication connection with the distance measuring instrument. The distance measuring instrument sends distance measuring light beams to the spherical reflection part and receives the light reflected by the spherical reflection part for distance measurement, so that the influence of the environment is small.
Description
Technical Field
The utility model relates to an automobile field specifically is a tire envelope test device.
Background
During the running process of the automobile, the wheels jump up and down and the whole wheels are steered to form a motion track. At present, test equipment for testing tire envelopes exists in the industry, the main principle of the equipment is that a high-definition camera imaging principle is adopted, and the equipment adopts a laser ranging method to obtain the movement track of a tire through a series of calculations.
However, the cost problem of the existing equipment is that the cost of the high-definition camera is very high, and the accuracy of the test is greatly reduced due to the shaking of the camera when the vehicle is driven violently because the camera is installed on the vehicle. In addition, in severe environment, such as dust, water stain, rainy days, cloudy days, strong light irradiation and the like, the imaging function of the high-definition camera has great influence, and the high-definition camera can only simulate the movement condition of the tire approximately, but cannot accurately calculate the real movement track of the wheel axis.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the actual movement track of the wheel axis can not be accurately calculated when the severe environment is met in the prior art. The distance measuring instrument for the tire enveloping test device is provided, and is used for sending distance measuring light beams to the spherical reflection part and then receiving the reflected light rays of the spherical reflection part for distance measurement, so that the influence of the environment is small.
Provided is a tire wrap test device including: the spherical reflection bracket is arranged on the tire and is provided with a spherical reflection part which protrudes out of one side surface of the tire along the axial direction of the tire; the distance meter support surrounds the spherical reflection part and is arranged around the spherical reflection part; the range finder is arranged on the range finder bracket and emits and receives light beams towards the spherical reflection part; and the workstation is in communication connection with the distance measuring instrument.
By adopting the scheme, the automobile can move along the movement track formed by the up-and-down jumping and steering of the wheels during the running process. Because the sphere reflection part is the hemisphere, then can obtain the displacement and the turned angle of each direction in space through this sphere to according to the tangent line angle who shines the sphere, can also utilize a light beam to obtain the displacement of two directions through mathematical conversion, thereby minimize distancer and set up quantity and conversion efficiency. The spherical reflection support capable of reflecting the ranging light is arranged on the tire, the range finder emits the ranging light beam to the spherical reflection part of the spherical reflection, and the spherical reflection part reflects the light beam back to the range finder so as to obtain the motion track of the wheel, the displacement of the center of the spherical reflection part in each direction in space and the rotation angle of a hemisphere, namely the rotation angle of the wheel, according to a phase method or a triangular ranging method, and the technical problem that the real motion track of the wheel axis cannot be accurately calculated in severe environment is solved.
According to another specific embodiment of the present invention, the tire enveloping test device disclosed in the embodiments of the present invention, the distance measuring device comprises at least 2 horizontal distance measuring devices and at least 2 vertical distance measuring devices; wherein the horizontal distance meter emits a distance measuring beam towards the spherical reflection part along the horizontal direction; the vertical rangefinder emits a ranging beam in a vertical direction toward the spherical reflecting portion.
By adopting the scheme, the vertical distance meter is used for measuring the vertical jumping of the wheel and the swinging of the wheel in the moving process, namely the rotation angles TX and TY and the displacement in the Z direction; the horizontal distance meter is mainly used for measuring the rotation of the wheel, namely calculating the rotation angle TZ and the displacement in the X, Y direction of the wheel in the movement, and the measuring and calculating precision is higher.
According to the utility model discloses a further embodiment, the utility model discloses a tire envelope test device that embodiment discloses, the distancer support includes along 2 vertical pillars of vertical direction parallel arrangement and the horizontal strut that sets up along the horizontal direction, and the both ends of horizontal strut are connected with the top of 2 vertical pillars respectively.
Specifically, the both ends of horizontal strut are connected with the top of 2 vertical struts respectively and can be the welding, also can be through mode such as threaded connection, joint can dismantle the connection, can also be at forging in-process integrated into one piece.
By adopting the scheme, the structure of the distance measuring instrument support is simplest, and meanwhile, the stability of the distance measuring instrument can be ensured.
According to another specific embodiment of the present invention, in the tire enveloping test device disclosed in the embodiments of the present invention, at least 2 horizontal distance meters include 4, and each vertical pillar is provided with 2 horizontal distance meters, and the light beam emitting end of the horizontal distance meter is located on one side of the vertical pillar near the spherical reflection part; at least 2 vertical distancers include 4 to vertical distancer evenly sets up on horizontal strut, and vertical distancer's beam transmitting end is located one side that horizontal strut is close to spherical reflecting part.
By adopting the scheme, the measuring and calculating precision is higher, the light beam transmitting end of the vertical distance meter is positioned on one side of the horizontal support close to the spherical reflection part, and the light beam transmitting end of the horizontal distance meter is positioned on one side of the vertical support close to the spherical reflection part, so that the light beam transmitting end is favorable for strengthening and fixing, and the interference of the transmitted distance measuring light beams can be avoided.
According to the utility model discloses a further embodiment, the utility model discloses a tire envelope test device that embodiment discloses, vertical pillar includes first pillar and second pillar, and per two horizontal distance meters set up with highly corresponding respectively on first pillar and second pillar along vertical direction.
By adopting the scheme, the measurement, calculation and correction can be correspondingly carried out, and the measurement and calculation precision is higher.
According to the utility model discloses a further embodiment, the utility model discloses a tire envelope test device that embodiment discloses, 4 horizontal distancers on the horizontal strut divide into two sets ofly, and every group horizontal distancer is the same to the distance of spherical reflection portion.
By adopting the method, the distance between the two distance meters in one group can be used as a parameter for measurement and calculation, the structure is simple, and the measurement is accurate.
According to the utility model discloses a further embodiment, the utility model discloses a tire envelope test device, distancer are laser sensor that embodiment discloses.
By adopting the scheme, the laser collected data is less influenced by the environment.
According to the utility model discloses a further embodiment, the utility model discloses a tire envelope test device that embodiment discloses, the setting of sphere reflection support is close to the position of wheel center at the tire.
By adopting the scheme, the wheel track can be more accurately simulated.
According to the utility model discloses a further embodiment, the utility model discloses a tire envelope test device that embodiment discloses, the distancer support sets up the position that is close to the tire in one side of automobile body along the width direction of automobile body.
By adopting the scheme, the setting space can be saved.
The utility model has the advantages that:
the tire enveloping test device is provided, so that the automobile can move along the movement track formed by the whole wheel due to the vertical jumping and steering of the wheel in the running process. Because the spherical reflection part is hemispherical, displacement and rotation angle in all directions in space can be obtained through the spherical surface, the tire is provided with the spherical reflection support capable of reflecting ranging light, the range finder emits ranging light beams to the spherical reflection part reflected by the spherical surface, and the spherical reflection part reflects the light beams back to the range finder, so that the motion track of the wheel, the displacement of the center of the spherical reflection part in all directions in space and the rotation angle of the hemisphere, namely the rotation angle of the wheel are obtained according to a phase method or a triangular ranging method, and the technical problem that the real motion track of the axis of the wheel cannot be accurately calculated in severe environment is solved.
Drawings
Fig. 1 is a schematic structural diagram of a tire enveloping test device in embodiment 1 of the present invention;
fig. 2 is a front view of a tire enveloping test device according to embodiment 1 of the present invention;
fig. 3 is a side view of a tire wraparound test apparatus according to embodiment 1 of the present invention;
fig. 4 is a top view of a tire enveloping test apparatus according to embodiment 1 of the present invention.
Description of reference numerals:
1: a tire;
10: a spherical reflective support; 11: a spherical reflection part;
20: a distance meter bracket;
21: a vertical pillar; 211: a first support; 212: a second support; 22: a horizontal strut;
30: a range finder;
31: a horizontal range finder; 311: a first horizontal rangefinder; 312: a second horizontal rangefinder;
32: a vertical rangefinder; 321: a first vertical rangefinder; 322: a second vertical rangefinder.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Examples
There is provided a tire wrap test apparatus, as shown in fig. 1 to 4, comprising: the spherical reflection bracket 10, the spherical reflection bracket 10 is installed on the tire, and the spherical reflection bracket 10 has a spherical reflection part 11 protruding from one side surface of the tire along the axial direction of the tire; the distance meter bracket 20, the distance meter 30 bracket 20 surrounds the spherical reflection part 11 and is arranged around the spherical reflection part 11; a distance meter 30, the distance meter 30 being disposed on the distance meter 30 holder 20 and emitting and receiving a light beam toward the spherical reflection part 11; and the work station is in communication connection with the distance measuring instrument 30.
Specifically, the spherical reflective support 10 may be screwed to the hub by means of a snap-fit screw or the like, so as to remain rotating simultaneously with the wheel and remain relatively stationary while the wheel is rotating. The specific structure of the spherical reflecting portion 11 is as shown in fig. 1, and the "surface protruding from one side of the tire" is the left side surface of the wheel as shown in fig. 1. The surface of the spherical reflection part 11 can reflect light, and the surface reflectivity of the spherical reflection part 11 can have different requirements according to the optical ranging principle of the range finder 30, for example, when the range finder 30 is a laser range finder 30, the reflectivity requirement of the spherical reflection part 11 is low, and the reflectivity of the spherical reflection part can not be a mirror surface, and can be a generally smooth metal surface or plastic surface, and even if muddy water exists, the influence is not great. That is, in the present embodiment, the material of the spherical reflecting portion 11 and the type of the distance meter 30 are not particularly limited.
The distance meter 30 may be a laser distance meter 30, such as a pulse type laser distance meter 30 using infrared laser, or other optical distance meters 30 to measure the distance from the spherical reflecting part 11 to the distance meter 30, and the specific model and the number of the distance meters 30 are not limited in the present embodiment.
The workstation includes a data acquisition computing device (e.g., a computer) and a data line or wireless receiver for connecting with the rangefinder 30 (when the rangefinder 30 is wireless transmission capable), and the present embodiment is not particularly limited to a specific model and type of workstation.
The distance meter bracket 20 may be fixed according to a test site, and may be disposed at a side of the vehicle extending to a wheel. The distance meter holder 20 may have a ring-shaped or rectangular frame structure as long as it surrounds the spherical reflecting portion 11 and is disposed around the spherical reflecting portion 11. The distance meter bracket 20 can be selected according to the size, the shape and the like of the bracket according to the type of a tire and an automobile.
The calculation method of the simultaneous data processing may be a phase method or a triangulation method, for example, a displacement in two directions can be obtained by using one light beam through mathematical conversion according to the tangential angle of the irradiated spherical surface. When the wheel shakes, the reflection angles of the light beams emitted at the same angle at the first position and the second position are different, and the connecting line of the first position and the second position forms an angle with the light rays of the emitted light beams, and the deviation in at least two directions can be obtained through a sin function or a cos function. That is, the present embodiment also does not limit the specific algorithm.
By adopting the scheme, the automobile can move along the movement track formed by the up-and-down jumping and steering of the wheels during the running process. Since the spherical reflection part 11 is hemispherical, the displacement and rotation angle in each direction in space can be obtained by one spherical surface, and the displacement in two directions can be obtained by one light beam through mathematical conversion according to the tangential angle of the irradiated spherical surface, thereby reducing the number of the distance measuring instruments 30 and the conversion efficiency as much as possible. The spherical reflection support 10 capable of reflecting ranging light is arranged on a tire, the range finder 30 emits ranging light beams to the spherical reflection part 11 of the spherical reflection, and the spherical reflection part 11 reflects the light beams back to the range finder 30, so that the motion track of a wheel, the displacement of the center of the spherical reflection part 11 in each direction in space and the rotation angle of a hemisphere, namely the rotation angle of the wheel are obtained according to a phase method or a triangular ranging method, and the technical problem that the real motion track of the axis of the wheel cannot be accurately calculated in a severe environment is solved.
In a preferred embodiment, as shown in fig. 1-4, rangefinder 30 includes at least 2 horizontal rangefinders 31 and at least 2 vertical rangefinders 32; wherein the horizontal distance meter 31 emits a distance measuring beam toward the spherical reflecting part 11 in the horizontal direction; the vertical distance meter 32 emits a distance measuring beam toward the spherical reflecting part 11 in the vertical direction.
Specifically, for convenience of explanation, as shown in fig. 1 to 4, 2 horizontal rangefinders 31 are defined as a first horizontal rangefinder 311 and a second horizontal rangefinder 312, respectively, and a vertical rangefinder 32 is defined as a first vertical rangefinder 321 and a second vertical rangefinder 322, respectively. The present embodiment does not specifically limit the installation position of each distance meter 30 as long as the distance measuring beams can be emitted in the horizontal direction and the vertical direction, respectively.
More specifically, for convenience of explanation, as shown in fig. 1 to 4, the vertical distance meter 32 is used to measure the vertical run-out of the wheel and the oscillation of the wheel during the movement process, and obtain the vertical variation of the surface of the spherical reflection part 11, so as to calculate the Z-direction displacement of the center of the spherical reflection part 11 and the rotation angles TX and TY of the wheel; the horizontal distance meter 31 is mainly used for measuring the rotation of the wheel, and the measured longitudinal change and transverse change of the spherical surface can calculate the X-direction displacement and Y-direction displacement of the center of the spherical surface and the rotation angle of the hemisphere around the TZ, namely the rotation angle of the wheel.
With the above scheme, the vertical distance meter 32 is used for measuring the up-down run-out of the wheel and the swing of the wheel in the moving process, namely, the rotation angles TX and TY and the displacement in the Z direction; the horizontal distance meter 31 is mainly used for measuring the rotation of the wheel, namely calculating the rotation angle TZ of the wheel in motion and the displacement in the direction X, Y, and the measuring and calculating precision is higher.
In a preferred embodiment, as shown in fig. 1 to 4, the support 20 of the distance measuring device 30 includes 2 vertical pillars 21 arranged in parallel in a vertical direction and a horizontal pillar 22 arranged in a horizontal direction, and both ends of the horizontal pillar 22 are respectively connected to the top ends of the 2 vertical pillars 21.
Specifically, the two ends of the horizontal strut 22 are respectively connected with the top ends of the 2 vertical struts 21 by welding, or detachably connected by means of threaded connection, clamping connection and the like, or integrally formed in the forging process.
By adopting the scheme, the structure of the distance measuring instrument 30 bracket 20 is simplest, and meanwhile, the stability of the distance measuring instrument 30 can be ensured.
In a preferred embodiment, as shown in fig. 1-4, the at least 2 horizontal distance meters 31 include 4, and each vertical support 21 is provided with 2 horizontal distance meters 31, respectively, and the light beam emitting end of the horizontal distance meter 31 is located on one side of the vertical support 21 close to the spherical reflecting part 11; the at least 2 vertical distance meters 32 include 4, and the vertical distance meters 32 are uniformly arranged on the horizontal support column 22, and the beam emitting end of the vertical distance meter 32 is located on the side of the horizontal support column 22 close to the spherical reflecting part 11.
Specifically, the present embodiment does not specifically limit the arrangement manner of the 4 horizontal distance meters 31 and the 4 vertical distance meters 32, and those skilled in the art can design the arrangement manner according to a specific algorithm.
By adopting the scheme, the measuring and calculating precision is higher, the light beam emitting end of the vertical distance meter 32 is positioned on one side of the horizontal support 22 close to the spherical reflection part 11, and the light beam emitting end of the horizontal distance meter 31 is positioned on one side of the vertical support 21 close to the spherical reflection part 11, so that the strengthening and the fixing are facilitated, and the interference of the emitted distance measuring light beams is avoided.
In a preferred embodiment, as shown in fig. 1 to 4, the vertical support 21 includes a first support 211 and a second support 212, and each two horizontal distance meters 31 are respectively disposed at the same height on the first support 211 and the second support 212 in the vertical direction.
Specifically, the first horizontal distance meter 311 is on the first support 211 and the second horizontal distance meter 312 is on the second support 212, and the first horizontal distance meter 311 and the second horizontal distance meter 312 are located at the same height in the vertical direction.
In a preferred embodiment, as shown in fig. 1-4, the 4 horizontal distance meters 31 on the horizontal strut 22 are divided into two groups, and the distance from each group of horizontal distance meters 31 to the spherical reflecting part 11 is the same.
Specifically, the first vertical distance meter 321 is two distance meters 30 in one group on the horizontal strut 22, the second vertical distance meter 322 is two distance meters 30 in the other group on the horizontal strut 22, the distances from the two distance meters 30 in the first vertical distance meter 321 to the spherical reflection part 11 are the same, and the distances from the two distance meters 30 in the second vertical distance meter 322 to the spherical reflection part 11 are the same.
By adopting the method, the distance between the two distance meters 30 in one group can be used as a parameter for measurement and calculation, the structure is simple, and the measurement is accurate.
In a preferred embodiment, the distance meter 30 is a laser sensor.
Specifically, the laser sensor may be the above-mentioned pulsed laser rangefinder 30 of infrared laser or other laser sensors, such as Nikon rangefinder 30, U.S. LTI rangefinder 30, and the like.
By adopting the scheme, the laser collected data is less influenced by the environment.
In a preferred embodiment, as shown in fig. 1-4, the spherical reflective support 10 is positioned near the center of the wheel of the tire.
By adopting the scheme, the wheel track can be more accurately simulated.
In a preferred embodiment, the bracket 20 of the range finder 30 is provided at a position close to a tire on one side of the vehicle body in the width direction of the vehicle body.
Specifically, the bracket 20 of the range finder 30 may be directly mounted on the vehicle or may be mounted on the ground when there is a wheel spin.
By adopting the scheme, the setting space can be saved.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (9)
1. A tire envelope test device, comprising:
the spherical reflection bracket is arranged on a tire and is provided with a spherical reflection part which protrudes out of one side surface of the tire along the axial direction of the tire;
the distance measuring instrument bracket surrounds the spherical reflection part and is arranged around the spherical reflection part;
a range finder disposed on the range finder support and emitting a range finding light beam toward the spherical reflection part and receiving a reflected light beam;
and the workstation is in communication connection with the range finder.
2. The tire envelope testing apparatus of claim 1, wherein the rangefinder comprises at least 2 horizontal rangefinders and at least 2 vertical rangefinders; wherein
The horizontal distance meter emits the distance measuring light beam towards the spherical reflection part along the horizontal direction;
the vertical distance meter emits the distance measuring beam toward the spherical reflection part in a vertical direction.
3. The tire envelope testing device of claim 2, wherein the distance measuring instrument support comprises 2 vertical pillars arranged in parallel in a vertical direction and a horizontal pillar arranged in a horizontal direction, and two ends of the horizontal pillar are respectively connected with the top ends of the 2 vertical pillars.
4. The tire envelope testing apparatus of claim 3,
the number of the at least 2 horizontal distance meters is 4, each vertical support is provided with 2 horizontal distance meters, and the light beam emitting end of each horizontal distance meter is positioned on one side of the vertical support close to the spherical reflection part;
the at least 2 vertical distance measuring instruments comprise 4 vertical distance measuring instruments, the vertical distance measuring instruments are uniformly arranged on the horizontal support, and the light beam emitting ends of the vertical distance measuring instruments are positioned on one side, close to the spherical reflection part, of the horizontal support.
5. The tire envelope testing apparatus of claim 4, wherein the vertical column includes a first column and a second column, and each two of the horizontal distance meters are respectively disposed at the same height on the first column and the second column in a vertical direction.
6. The tire envelope testing apparatus of claim 5, wherein said 4 horizontal distance meters on said horizontal support column are divided into two groups, and the distance from each group of said horizontal distance meters to said spherical reflecting portion is the same.
7. A tyre envelope testing device as claimed in any one of claims 1 to 6 wherein the distance meter is a laser sensor.
8. The tire envelope testing apparatus of claim 7, wherein the spherical reflective mount is disposed at a location of the tire proximate to a wheel center.
9. The tire envelope testing device of claim 7, wherein the range finder support is provided at a position close to the tire on one side of the vehicle body in a width direction of the vehicle body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020918655.8U CN212400793U (en) | 2020-05-27 | 2020-05-27 | Tire envelope test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020918655.8U CN212400793U (en) | 2020-05-27 | 2020-05-27 | Tire envelope test device |
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| CN212400793U true CN212400793U (en) | 2021-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686598A (en) * | 2021-06-30 | 2021-11-23 | 中汽研汽车检验中心（天津）有限公司 | Tire wheel cover interference inspection method based on K & C test bed |
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2020
- 2020-05-27 CN CN202020918655.8U patent/CN212400793U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686598A (en) * | 2021-06-30 | 2021-11-23 | 中汽研汽车检验中心（天津）有限公司 | Tire wheel cover interference inspection method based on K & C test bed |
| CN113686598B (en) * | 2021-06-30 | 2023-09-01 | 中汽研汽车检验中心（天津）有限公司 | K & C test bench-based tire wheel cover interference inspection method |
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