CN113418589B - Wheel core excitation testing device in whole vehicle state - Google Patents
Wheel core excitation testing device in whole vehicle state Download PDFInfo
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- CN113418589B CN113418589B CN202110672920.8A CN202110672920A CN113418589B CN 113418589 B CN113418589 B CN 113418589B CN 202110672920 A CN202110672920 A CN 202110672920A CN 113418589 B CN113418589 B CN 113418589B
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- rim
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 230000005284 excitation Effects 0.000 title claims abstract description 29
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000009191 jumping Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
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- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/045—Allowing translations adapted to left-right translation movement
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- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a wheel core excitation testing device in a whole vehicle state, which mainly comprises a rim fixing support, a slip ring, an adjustable telescopic rod and a telescopic fixing rod, wherein the slip ring comprises a slip ring rotor and a slip ring stator, and BNC wire harness interfaces are respectively arranged on the slip ring rotor and the slip ring stator and are used for connecting a vibration sensor and transmitting vibration signals; the slip ring rotor is connected with the rim through the rim fixing support and rotates along with the rim, the rear end of the slip ring stator is connected with one end of an adjustable telescopic rod, the other end of the adjustable telescopic rod is connected with a telescopic fixing rod, and the telescopic fixing rod is used for being fixedly connected with a wheel cover. The invention realizes the high-precision wired test of the vibration of the wheel core under the high-speed horizontal running of the whole vehicle, realizes the function of testing the excitation (vibration) of the wheel core under the high-speed running state of the whole vehicle, and meets the development requirement of road noise performance.
Description
Technical Field
The invention relates to equipment for carrying out high-precision measurement on vibration excitation of a wheel core in the development process of a vehicle, in particular to a wheel core excitation testing device in a whole vehicle state.
Background
Along with the increasing of the NVH (noise and vibration) performance requirements of vehicles, the problem of road noise (road noise for short) is an important index for influencing the NVH performance development of the whole vehicle, road excitation (wheel core excitation condition) needs to be measured in the normal vehicle development process, and noise and vibration response in the vehicle is calculated through simulation and test according to the excitation size and frequency. The prior art schemes are generally two types:
first, a wired vibration sensor is used.
Because the tire is a rotating part in the whole vehicle running state, the wired vibration sensor cannot be arranged at the wheel core (the tail wire harness of the sensor is wound and pulled apart), so that a tester can only arrange the wired vibration sensor at the steering column, and the vibration condition is taken as an excitation source of road noise, but the excitation is transmitted through parts such as a brake disc, and the like, so that the simulation calculation process is not accurate enough.
Second, a wireless vibration sensor is used.
As shown in fig. 1, the measurement is performed using a wireless vibration sensor (composed of a piezoelectric vibration sensor, a processor, a wireless transmission device, and the like): the sensor is arranged (magnetically attracted or glued) at the wheel core, and the piezoelectric vibration sensor tests the vibration condition of the wheel core under the low-speed running state of the vehicle, and is transmitted to the receiving end (devices such as a mobile phone, a computer and the like) by the wireless transmission device (Bluetooth and the like) after being processed by the processor.
The wireless vibration sensor is limited in the aspects of volume, power supply and the like, and the sampling rate of equipment and the bandwidth of acquisition frequency are affected, so that the wireless vibration sensor can only meet the test requirement of low-rotation-speed vibration, cannot accurately measure the high-rotation-speed vibration test, and the test data are not matched with the main flow analysis software, so that the road noise test requirement cannot be met.
Meanwhile, the anti-interference capability of the wireless sensing equipment in the measuring and data transmission processes is weak, and the wireless sensing equipment is easily influenced by the outside.
That is, the sampling rate and the anti-interference capability of the wireless vibration sensor cannot meet the test requirement of high rotation speed.
In summary, the existing test equipment technology cannot meet the requirement of measuring the excitation of the wheel core in the high-speed running state of the whole vehicle. There is a strong need for a device for testing excitation (vibration) of a wheel core to meet the development requirements of vehicle road noise performance.
Disclosure of Invention
The invention aims to provide a wheel core excitation testing device in a whole vehicle state, which is used for carrying out high-precision measurement on wheel core vibration excitation in a high-rotation-speed running state of the whole vehicle and meeting the development requirement of road noise performance.
In order to solve the technical problems, the invention adopts the following technical scheme:
the wheel core excitation testing device in the whole vehicle state mainly comprises a rim fixing support, a slip ring, an adjustable telescopic rod and a telescopic fixing rod, wherein the slip ring comprises a slip ring rotor and a slip ring stator, and BNC wire harness interfaces are respectively arranged on the slip ring rotor and the slip ring stator and used for connecting a vibration sensor and transmitting vibration signals; the slip ring rotor is connected with the rim through the rim fixing support and rotates along with the rim, the rear end of the slip ring stator is connected with one end of an adjustable telescopic rod, the other end of the adjustable telescopic rod is connected with a telescopic fixing rod, and the telescopic fixing rod is used for being fixedly connected with a wheel cover.
The slip ring stator comprises a stator shell, a connecting support and a stator BNC wire harness interface; the connecting support is positioned at the rear end of the stator shell and is used for being connected with the adjustable telescopic rod; the stator BNC wire harness interface is used for connecting a data acquisition circuit;
the slip ring rotor comprises a rotor body and a rotor BNC wire harness interface, wherein the rotor body is rotatably arranged in the stator shell, and the front end of the rotor body is connected with a rim through a rim fixing bracket and rotates along with the rim; the rotor BNC wire harness interface is used for connecting a vibration sensor wire harness.
The front end of the rotor body of the slip ring rotor is provided with an annular rotor chute, the rim fixing support comprises a plurality of sliding seats which are arranged on the rotor chute in a arrayed manner, the sliding seats are in sliding fit with the rotor chute, a first locking knob is arranged on the sliding seats, and the sliding seats can slide in the rotor chute and are fixed with the rotor chute through the first locking knob; each sliding seat is connected with a support arm, and the front end of the support arm is provided with a support seat which is connected with the rim.
The rotor chute is positioned at the periphery of the front end of the rotor body.
The support arms diverge forwardly and outwardly.
The support seat is connected with the rim through gluing.
The adjustable telescopic rod comprises a telescopic rod body, and a fixed support is arranged at the lower end of the telescopic rod body and is in matched connection with a connecting support on the slip ring stator;
the connecting support on the slip ring stator is a spherical support, the spherical support consists of a rectangular cylinder and a sphere, the rectangular cylinder is fixedly connected with the stator shell, and the sphere is fixed at the end part of the rectangular cylinder;
the fixed support comprises a base body and a spherical groove at the center of the base body, wherein a horizontal rectangular slot is outwards arranged from the spherical groove, the rectangular slot is matched with a rectangular column of the slip ring stator, and the spherical groove is matched with a sphere of the slip ring stator.
The telescopic rod body comprises a vertical telescopic sleeve arm and a vertical telescopic arm which is inserted into the vertical telescopic sleeve arm in a sliding manner, the upper end of the vertical telescopic arm stretches into the vertical telescopic sleeve arm, and the lower end of the vertical telescopic arm stretches out to the telescopic sleeve arm and is connected with the fixed support;
a spring and a sliding block are sequentially arranged at the upper end of the vertical telescopic arm upwards in the vertical telescopic sleeve arm, and two ends of the spring are respectively in butt fit with the upper end of the vertical telescopic arm and the sliding block; the vertical telescopic sleeve arm is further provided with a vertical sliding groove, the sliding block is connected with a sliding block wrench outwards, the sliding block wrench extends out of the vertical sliding groove, the sliding block wrench is provided with a second locking knob, and the sliding block wrench can drive the sliding block to slide in the vertical telescopic sleeve arm and be locked through the second locking knob.
The telescopic fixed rod comprises a horizontal telescopic sleeve arm and a horizontal telescopic arm which is inserted into the horizontal telescopic sleeve arm in a sliding manner, a third locking knob is arranged on the horizontal telescopic sleeve arm, and the horizontal telescopic arm can slide in the horizontal telescopic sleeve arm and is locked through the third locking knob;
the end of the horizontal telescopic arm, which extends out of the horizontal telescopic sleeve arm, is coaxially and rotatably connected with a stud, a clamping plate in threaded connection with the stud is sleeved on the stud, a horizontal guide plate is further arranged on the clamping plate, the guide plate is in sliding connection with the horizontal telescopic arm, and the stud rotates and drives the clamping plate to move.
The other end of the stud is provided with an adjusting knob.
The invention has the beneficial effects that:
the invention realizes the high-precision wired test of the vibration of the wheel core under the high-speed horizontal running of the whole vehicle, realizes the function of testing the excitation (vibration) of the wheel core under the high-speed running state of the whole vehicle, and meets the development requirement of road noise performance.
The structural design of the adjustable telescopic rod can realize the function of adjusting the telescopic height, and simultaneously prevent the tire from jumping up and down to damage the testing device in the testing process, thereby meeting the measurement of the large-amplitude jumping working condition of the whole vehicle tire.
The structural design of the rim fixing support is suitable for the excitation (vibration) test of wheel cores of tires of different types.
According to the invention, the matching structure design of the fixed support and the spherical support is that the rectangular slot is matched with the rectangular column body of the slip ring stator, and the spherical slot is matched with the sphere of the slip ring stator, so that the slip ring stator can rotate along the vertical axis of the adjustable telescopic rod, namely horizontally swing, and meanwhile, the slip ring stator is limited by the adjustable telescopic rod and does not rotate along with the slip ring rotor, so that the measurement of the steering working condition of the wheel core in the whole vehicle state is satisfied.
Drawings
FIG. 1 is a schematic diagram of a prior art wireless vibration sensor;
FIG. 2 is a schematic view of the overall structure of the present invention in the front view direction;
FIG. 3 is a schematic view showing the overall structure of the present invention in the rear view direction;
FIG. 4 is a schematic structural view of a rim support bracket according to the present invention;
FIG. 5 is a schematic view of a slip ring rotor according to the present invention;
FIG. 6 is a schematic diagram of a slip ring stator according to the present invention;
FIG. 7 is a schematic view of an adjustable telescopic rod according to the present invention;
FIG. 8 is a cross-sectional view of an adjustable telescoping rod of the present invention;
FIG. 9 is an enlarged view of the mount of FIG. 8;
fig. 10 is a schematic structural view of a telescopic rod according to the present invention.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings.
Term interpretation referred to in this embodiment: 1. slip ring: the electrical component is responsible for communicating and transferring energy and signals for the rotating body, wherein the slip ring rotor rotates along with the rotating member, and the stator is fixed; 2. sampling rate: the number of acquisitions per unit time; 3. road noise: tire noise in a running state of a vehicle and vibration and noise caused in the vehicle by transmission of road surface excitation (vibration).
As shown in fig. 2 to 10, the wheel core excitation testing device in the whole vehicle state mainly comprises a rim fixing support 1, a slip ring, an adjustable telescopic rod 4 and a telescopic fixing rod 5, wherein the slip ring comprises a slip ring rotor 2 and a slip ring stator 3, and BNC wire harness interfaces are respectively arranged on the slip ring rotor 2 and the slip ring stator 3 and are used for connecting a vibration sensor and transmitting vibration signals; the slip ring rotor 2 is connected with the rim through the rim fixing support 1 and rotates along with the rim, the rear end of the slip ring stator 3 is connected with one end of the adjustable telescopic rod 4, the other end of the adjustable telescopic rod 4 is connected with the telescopic fixing rod 5, and the telescopic fixing rod 5 is fixedly connected with the wheel cover.
The specific structure of each component is as follows:
the slip ring stator 3 comprises a stator housing 13, a spherical support 14 and a stator BNC wire harness interface 15; the spherical support 14 is positioned at the rear end of the stator housing 13 and is used for being connected with the adjustable telescopic rod 4; the stator BNC harness interface 15 is used for connecting data acquisition lines.
The slip ring rotor 2 comprises a rotor body 11 and a rotor BNC wire harness interface 12, wherein the rotor body 11 is rotatably arranged in a stator shell 13, and the front end of the rotor body 11 is connected with a rim through a rim fixing bracket 1 and rotates along with the rim; the rotor BNC harness interface 12 is used to connect a vibration sensor harness.
The periphery of the front end of the rotor body is provided with an annular rotor chute 10, the rim fixing support 1 comprises three sliding seats 8 which are arranged on the rotor chute 10, the sliding seats 8 are in sliding fit with the rotor chute 10, the sliding seats 8 are provided with first locking knobs 9 (the first locking knobs are of screw structures), and the sliding seats 8 can slide in the rotor chute 10 and are fixed with the rotor chute 10 through the first locking knobs 9; each sliding seat 8 is connected with a support arm 7, the support arms 7 spread forwards and outwards, the front ends of the support arms 7 are provided with support seats 6, and the support seats 6 are connected with the rims through gluing.
The adjustable telescopic rod 4 comprises a telescopic rod body, and the lower end of the telescopic rod body is provided with a fixed support 18 which is matched and connected with the spherical support 14 on the slip ring stator 3.
The spherical support 14 is composed of a rectangular cylinder 16 and a sphere 17, the rectangular cylinder 16 is fixedly connected with the stator housing 13, and the sphere 17 is fixed at the end part of the rectangular cylinder 16.
The fixed support 18 comprises a base 25 and a spherical groove 27 at the center of the base, a horizontal rectangular slot 26 is arranged outwards from the spherical groove 27, the rectangular slot 26 is matched with the rectangular column 16 of the slip ring stator, the spherical groove 27 is matched with the sphere 17 of the slip ring stator, and therefore the slip ring stator 3 can rotate along the vertical axis of the adjustable telescopic rod 4, namely horizontally swing, and the slip ring stator 3 is limited to rotate along with the slip ring rotor 2; .
The telescopic rod body comprises a vertical telescopic sleeve arm 20 and a vertical telescopic arm 19 which is inserted into the vertical telescopic sleeve arm 20 in a sliding manner, the upper end of the vertical telescopic arm 19 stretches into the vertical telescopic sleeve arm, and the lower end of the vertical telescopic arm 19 stretches out of the telescopic sleeve arm and is fixedly connected with the fixed support 18.
A spring 21 and a sliding block 22 are sequentially arranged at the upper end of the vertical telescopic arm 19 in the vertical telescopic sleeve arm 20 upwards, and two ends of the spring 21 are respectively in abutting fit with the upper end of the vertical telescopic arm 19 and the sliding block 22; the vertical telescopic sleeve arm 20 is further provided with a vertical sliding groove, the sliding block 22 is connected with a sliding block wrench 23 outwards, the sliding block wrench 23 extends out of the vertical sliding groove, the sliding block wrench 23 is provided with a second locking knob 24, and the sliding block wrench 23 can drive the sliding block 22 to slide in the vertical telescopic sleeve arm 20 and be locked through the second locking knob 24, so that the spring 21 is compressed, and the expansion and the contraction of the vertical telescopic arm 19 are controlled. Through the structure, the function of adjusting the telescopic height is realized, and the tyre is prevented from jumping up and down to damage the testing device in the testing process.
In this embodiment, the second locking knob 24 has a screw structure, and the portion of the slide wrench 23 passing through the vertical chute is narrower, and the outer portion is wider, so that the screw end of the second locking knob 24 can be propped against the vertical telescopic sleeve arms 20 at two sides of the vertical chute, thereby realizing the locking function.
The telescopic fixed rod comprises a horizontal telescopic sleeve arm 28 and a horizontal telescopic arm 29 which is inserted into the horizontal telescopic sleeve arm in a sliding manner, a third locking knob 33 (the third locking knob is of a screw structure) is arranged on the horizontal telescopic sleeve arm 28, and the horizontal telescopic arm 29 can slide in the horizontal telescopic sleeve arm 28 and be locked through the third locking knob 33, so that a telescopic function is realized.
The one end that horizontal telescopic arm 29 stretches out horizontal telescopic arm 28 is connected with double-screw bolt 30 in coaxial rotation, the cover is equipped with rather than threaded connection's splint 31 on the double-screw bolt 30, still is equipped with horizontal deflector on splint 31, the deflector extends to horizontal telescopic arm and with horizontal telescopic arm sliding connection, the other end of double-screw bolt still is equipped with adjust knob 32, adjust knob 32 can drive double-screw bolt 30 rotatory and drive splint 31 and remove to this realizes the fixed function of flexible dead lever 5 and wheel casing lower extreme.
The structural design of the adjustable telescopic rod 4 in the invention can realize the function of adjusting the telescopic height, and simultaneously prevent the tire from jumping up and down to damage the testing device in the testing process, thereby meeting the measurement of the large-amplitude jumping working condition of the whole vehicle tire.
The structural design of the rim fixing support 1 is suitable for the excitation (vibration) test of wheel cores of tires of different types.
According to the invention, due to the matched structural design of the fixed support 18 and the spherical support 14, the slip ring stator can rotate along the vertical axis of the adjustable telescopic rod, namely horizontally swing, and meanwhile, the slip ring stator is limited by the adjustable telescopic rod and does not rotate along with the slip ring rotor, so that the measurement of the steering working condition of the wheel core in the whole vehicle state is satisfied.
The test function (method) implementation of the invention is described as follows:
(1) Firstly, pasting a wired vibration sensor to a wheel core and connecting the wired vibration sensor to a rotor BNC wire harness interface 12 of the slip ring rotor 2 through a wire harness (short wire);
(2) The position of the rim fixing support 1 is adjusted according to the structure of the tire rim to be tested, and the tire rim is fixed with the rotor chute 10 through the first locking knob 9;
(3) The rim fixing support 1 is in adhesive connection with the rim through the support seat 6;
(4) The telescopic quantity of the telescopic arm 19 and the relative position of the slip ring rotor 2 and the slip ring stator 3 are adjusted through the slide wrench 23 of the telescopic rod 4, so that the telescopic fixed rod 5 is flush with the lower edge of the wheel cover and vertical to the lower edge of the wheel cover, and the knob 32 drives the stud 30 to rotate and drives the clamping plate 31 to move, thereby realizing the fixing function of the telescopic fixed rod 5 and the lower edge of the wheel cover;
(5) The stator BNC harness interface 15 is connected with a data acquisition device by using a data wire, and the excitation condition of the wheel core is calculated by a computer.
The device realizes high-precision wired test of the vibration of the wheel core of the whole vehicle under high-speed horizontal running.
The invention realizes the function of testing the excitation (vibration) of the wheel core in the high-speed running state of the whole vehicle, can perform high-precision measurement on the vibration excitation of the wheel core, and meets the development requirement of road noise performance.
The above embodiments are only for illustrating the technical solution of the present invention, and it should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, which is intended to be encompassed by the claims.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.
Claims (4)
1. The utility model provides a wheel core excitation testing arrangement under whole car state which characterized in that: the device mainly comprises a rim fixing support, a slip ring, an adjustable telescopic rod and a telescopic fixing rod, wherein the slip ring comprises a slip ring rotor and a slip ring stator, and BNC wire harness interfaces are respectively arranged on the slip ring rotor and the slip ring stator and are used for connecting a vibration sensor and transmitting vibration signals; the slip ring rotor is connected with the rim through a rim fixing support and rotates along with the rim, the rear end of the slip ring stator is connected with one end of an adjustable telescopic rod, the other end of the adjustable telescopic rod is connected with a telescopic fixing rod, and the telescopic fixing rod is used for being fixedly connected with a wheel cover;
the slip ring stator comprises a stator shell, a connecting support and a stator BNC wire harness interface; the connecting support is positioned at the rear end of the stator shell and is used for being connected with the adjustable telescopic rod; the stator BNC wire harness interface is used for connecting a data acquisition circuit;
the slip ring rotor comprises a rotor body and a rotor BNC wire harness interface, wherein the rotor body is rotatably arranged in the stator shell, and the front end of the rotor body is connected with a rim through a rim fixing bracket and rotates along with the rim; the rotor BNC wire harness interface is used for connecting a vibration sensor wire harness;
the front end of the rotor body of the slip ring rotor is provided with an annular rotor chute, the rim fixing support comprises a plurality of sliding seats which are arranged on the rotor chute in a arrayed manner, the sliding seats are in sliding fit with the rotor chute, a first locking knob is arranged on the sliding seats, and the sliding seats can slide in the rotor chute and are fixed with the rotor chute through the first locking knob; each sliding seat is connected with a support arm, and the front end of the support arm is provided with a support seat which is connected with the rim;
the support arms diverge forwardly and outwardly;
the adjustable telescopic rod comprises a telescopic rod body, and a fixed support is arranged at the lower end of the telescopic rod body and is in matched connection with a connecting support on the slip ring stator;
the connecting support on the slip ring stator is a spherical support, the spherical support consists of a rectangular cylinder and a sphere, the rectangular cylinder is fixedly connected with the stator shell, and the sphere is fixed at the end part of the rectangular cylinder;
the fixed support comprises a base body and a spherical groove at the center of the base body, wherein a horizontal rectangular slot is outwards arranged from the spherical groove, the rectangular slot is matched with a rectangular column of the slip ring stator, and the spherical groove is matched with a sphere of the slip ring stator;
the telescopic rod body comprises a vertical telescopic sleeve arm and a vertical telescopic arm which is inserted into the vertical telescopic sleeve arm in a sliding manner, the upper end of the vertical telescopic arm stretches into the vertical telescopic sleeve arm, and the lower end of the vertical telescopic arm stretches out to the telescopic sleeve arm and is connected with the fixed support;
a spring and a sliding block are sequentially arranged at the upper end of the vertical telescopic arm upwards in the vertical telescopic sleeve arm, and two ends of the spring are respectively in butt fit with the upper end of the vertical telescopic arm and the sliding block; the vertical telescopic sleeve arm is also provided with a vertical chute, the sliding block is outwards connected with a sliding block wrench, the sliding block wrench extends out of the vertical chute, the sliding block wrench is provided with a second locking knob, and the sliding block wrench can drive the sliding block to slide in the vertical telescopic sleeve arm and be locked through the second locking knob;
the telescopic fixed rod comprises a horizontal telescopic sleeve arm and a horizontal telescopic arm which is inserted into the horizontal telescopic sleeve arm in a sliding manner, a third locking knob is arranged on the horizontal telescopic sleeve arm, and the horizontal telescopic arm can slide in the horizontal telescopic sleeve arm and is locked through the third locking knob;
the end of the horizontal telescopic arm, which extends out of the horizontal telescopic sleeve arm, is coaxially and rotatably connected with a stud, a clamping plate in threaded connection with the stud is sleeved on the stud, a horizontal guide plate is further arranged on the clamping plate, the guide plate is in sliding connection with the horizontal telescopic arm, and the stud rotates and drives the clamping plate to move;
the test method is as follows:
(1) Firstly, pasting a wired vibration sensor to a wheel core and connecting the wired vibration sensor to a rotor BNC harness interface of a slip ring rotor through a harness;
(2) The position of a rim fixing support is adjusted according to the structure of the tested tire rim and is fixed with a rotor chute through a first locking knob;
(3) The rim fixing support is in adhesive connection with the rim through the support seat;
(4) The telescopic quantity of the telescopic arm and the relative position of the sliding ring rotor and the sliding ring stator are adjusted through a sliding block wrench of the telescopic rod, so that the telescopic fixed rod is flush with the lower edge of the wheel cover and vertical to the lower edge of the wheel cover, and the knob drives the stud to rotate and drives the clamping plate to move, thereby realizing the fixing function of the telescopic fixed rod and the lower edge of the wheel cover;
(5) And the stator BNC wire harness interface is connected with the data collector by using a data wire, and the excitation condition of the wheel core is calculated by a computer.
2. The wheel core excitation testing device under a whole vehicle state according to claim 1, wherein: the rotor chute is positioned at the periphery of the front end of the rotor body.
3. The wheel core excitation testing device under a whole vehicle state according to claim 1, wherein: the support seat is connected with the rim through gluing.
4. The wheel core excitation testing device under a whole vehicle state according to claim 1, wherein: the other end of the stud is provided with an adjusting knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110672920.8A CN113418589B (en) | 2021-06-17 | 2021-06-17 | Wheel core excitation testing device in whole vehicle state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110672920.8A CN113418589B (en) | 2021-06-17 | 2021-06-17 | Wheel core excitation testing device in whole vehicle state |
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| Publication Number | Publication Date |
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| CN113418589A CN113418589A (en) | 2021-09-21 |
| CN113418589B true CN113418589B (en) | 2023-08-11 |
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| CN202110672920.8A Active CN113418589B (en) | 2021-06-17 | 2021-06-17 | Wheel core excitation testing device in whole vehicle state |
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| JP2001165820A (en) * | 1999-12-10 | 2001-06-22 | Toyota Motor Corp | Vehicle exciting method, exciter and vibration characteristic detecting method |
| CN101968403A (en) * | 2010-10-11 | 2011-02-09 | 山东交通学院 | Multi-degree-of-freedom vehicle dynamics test platform |
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