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CN-224231280-U - Tire modal testing device

CN224231280UCN 224231280 UCN224231280 UCN 224231280UCN-224231280-U

Abstract

The utility model discloses a tire modal testing device which comprises a vibration exciter, a supporting component and a hanging component, wherein the vibration exciter is used for exciting a tire, the supporting component comprises a frame and a supporting plate arranged at the bottom of the frame, the supporting plate is provided with a first guide rail along a first direction, the vibration exciter is arranged on the first guide rail, the vibration exciter can move along the first guide rail, the hanging component is arranged along a second direction, the second direction is perpendicular to the horizontal plane where the first direction is located, and the hanging component is used for hanging the tire so as to arrange the tire above the vibration exciter. The vibration exciter is arranged on the first guide rail of the support plate and can move along the first guide rail, so that the working area of the vibration exciter is enlarged, and the vibration exciter is suitable for tire modal testing requirements of various working conditions.

Inventors

  • SHI SHUO
  • HAN XIAO
  • JIANG QINGJUN

Assignees

  • 万力轮胎股份有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (10)

  1. 1. A tire modal testing apparatus, comprising: The vibration exciter is used for exciting the tire; The support assembly comprises a frame and a support plate arranged at the bottom of the frame, wherein the support plate is provided with a first guide rail along a first direction, the vibration exciter is arranged on the first guide rail, and the vibration exciter can move along the first guide rail; The suspension assembly is arranged along a second direction, the second direction is perpendicular to the horizontal plane where the first direction is located, and the suspension assembly is used for suspending the tire so as to enable the tire to be arranged above the vibration exciter.
  2. 2. The tire modal testing apparatus of claim 1, wherein the suspension assembly includes a mounting post having a mounting shaft disposed on a side of the mounting post proximate the exciter, the mounting shaft for mounting the tire.
  3. 3. The tire testing device of claim 2, wherein the mounting post is provided with a second rail disposed along the second direction, the mounting shaft being mounted to the second rail, the mounting shaft being movable along the second rail.
  4. 4. A tyre modal testing device according to claim 2 or 3, wherein the side of the support plate remote from the mounting post is provided with a weight for balancing the centre of gravity.
  5. 5. The tire modal testing apparatus of claim 1, wherein the suspension assembly further comprises a plurality of suspension tubes and a suspension string, the plurality of suspension tubes being disposed on top of the frame, the plurality of suspension strings having ends connected to the suspension tubes, the suspension string being for suspending the tire.
  6. 6. The tire testing device of claim 5, wherein strong magnets are respectively disposed at two ends of the suspension tube, and the strong magnets are magnetically connected with the frame to limit the suspension tube.
  7. 7. Tyre modal testing device according to claim 1 or 5, characterized in that the bottom of the frame is provided with a load bearing for stabilizing the frame.
  8. 8. The tire testing device of claim 1 or 5, wherein the frame comprises four first bars disposed in the first direction, four second bars disposed in the second direction, and four third bars disposed in a third direction, the first bars, the second bars, and the third bars being end to end with one another, the third direction being perpendicular to a plane in which the first direction and the second direction lie.
  9. 9. The tire testing device of claim 8, wherein the support assembly further comprises a plurality of reinforcement members, the top of the second rod being connected to the first and second rods to form a mounting angle, the plurality of reinforcement members being disposed within the corresponding mounting angles, respectively.
  10. 10. The tire testing device of claim 8, wherein the frame is provided with reinforcing bars on opposite sides parallel to the first direction, one end of the reinforcing bars being connected to the first bar, and the other end of the reinforcing bars being connected to the second bar.

Description

Tire modal testing device Technical Field The utility model relates to the technical field of tire testing, in particular to a tire modal testing device. Background Under the running condition of the automobile, road surface excitation acts on the tires to induce vibration, the tires are filtered and then transmit the excitation into the automobile through transmission paths such as a vehicle suspension, a chassis and a steering system, and finally low-frequency noise and vibration are formed and perceived by drivers and passengers. Therefore, intensive studies on tire modes and force transfer characteristics become a key technical path for solving the NVH (noise, vibration and harshness) problem of automobiles. The mechanical characteristics of the tire under different working conditions can be analyzed by a researcher through modal testing, and key parameters such as the vibration mode, the natural frequency and the damping ratio of the tire can be known, which is important for the design and optimization of the tire. In the related art, a tire is usually lifted by adopting a soft rope in a tire modal test, measuring points are uniformly arranged on the surface of the tire, then the measuring points of the tread of the tire are knocked by a hammer, and finally the acquired test data are captured by sensors arranged on two sides of the center of a rim of the tire, so that key modal parameters such as the natural frequency, the damping ratio, the vibration mode and the like of the tire are acquired. However, the tire modal test is performed manually, an operator is required to have certain experience, the knocking force and accuracy are quite required, a plurality of persons are required to cooperatively operate in the test process, the excitation effectiveness is judged by observing the waveform acquired by a computer in real time, the operation flow is complicated, the detection efficiency is low, and the test data deviation is caused by the fact that artificial factors are easily introduced. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the tire modal testing device which can improve the detection efficiency of the tire modal test and improve the accuracy of test data. The tire modal testing device comprises a vibration exciter, a supporting assembly and a hanging assembly, wherein the vibration exciter is used for exciting a tire, the supporting assembly comprises a frame and a supporting plate arranged at the bottom of the frame, a first guide rail is arranged on the supporting plate along a first direction, the vibration exciter is installed on the first guide rail, the vibration exciter can move along the first guide rail, the hanging assembly is arranged along a second direction, the second direction is perpendicular to the horizontal plane where the first direction is located, and the hanging assembly is used for hanging the tire so as to enable the tire to be arranged above the vibration exciter. The tire mode testing device provided by the embodiment of the utility model has the advantages that the vibration exciter is adopted to excite the tire, so that the detection efficiency of the tire mode test can be improved, the problem that the strength and accuracy are difficult to control when the tire is manually knocked is avoided, the deviation of test data caused by human factors is reduced, and the accuracy of the test data is improved. In addition, the vibration exciter is arranged on the first guide rail of the supporting plate and can move along the first guide rail, so that the working area of the vibration exciter is enlarged, and the requirements of tire modal testing under various working conditions are met. According to some embodiments of the utility model, the suspension assembly comprises a mounting post provided with a mounting shaft on a side of the mounting post adjacent to the exciter, the mounting shaft being for mounting the tyre. According to some embodiments of the utility model, the mounting post is provided with a second rail arranged along the second direction, the mounting shaft being mounted to the second rail, the mounting shaft being movable along the second rail. According to some embodiments of the utility model, a weight is provided on a side of the support plate remote from the mounting post, the weight being used to balance the center of gravity. According to some embodiments of the utility model, the suspension assembly further comprises a plurality of suspension tubes arranged on top of the frame, and suspension ropes, both ends of which are connected to the suspension tubes, the suspension ropes being used for suspending the tire. According to some embodiments of the utility model, strong magnets are respectively arranged at two ends of the hanging pipe, and the strong magnets are magnetically connected with the frame so as to limit the ha