Microphone support device for tire indoor noise test
By designing a microphone bracket device for indoor noise testing of tires, using lasers and adjustment screws to achieve rapid and accurate positioning and adjustment of the microphone array, the problem of time-consuming, labor-intensive and inconvenient adjustment in the prior art is solved, and the accuracy of the test is improved and efficiency.
Patent Information
- Application Number
- CN202421015410.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-11
AI Technical Summary
Existing tire indoor noise testing equipment is time-consuming and labor-intensive when accurately erecting dozens of microphones, and is inconvenient to adjust after parameters change, resulting in low accuracy.
A microphone bracket device including a linear equally spaced positioning bracket and a positioning benchmark is designed, and a laser and adjustment screws are used to achieve rapid and precise positioning and adjustment of the microphone array.
It realizes convenient and precise construction of microphone arrays before tire noise testing, and flexibly adjusts the array position after experimental conditions change, improving the accuracy and efficiency of the test.
Smart Images
Figure CN222186380U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tire noise analysis and testing equipment, in particular to a microphone bracket device used for indoor tire noise testing. Background Art
[0002] As we all know, indoor tire noise testing is of great significance for studying tire noise performance. The ISO20908 standard clearly stipulates the calculation requirements for microphone placement using the drum method. In specific experimental scenarios, accurately setting up dozens of microphones according to this standard generally requires the assistance of a large amount of experimental equipment, which is time-consuming and labor-intensive, and has low accuracy. It is also very inconvenient to adjust the microphone position after parameter changes. Summary of the invention
[0003] In order to overcome the shortcomings of the prior art, the utility model provides a microphone holder device for indoor tire noise testing, which can quickly locate the center point of a linear microphone array, quickly and accurately locate the positions between adjacent microphones, and effectively set up and fix the microphone for noise testing.
[0004] The technical solution adopted by the utility model to solve the technical problem is: a microphone bracket device for indoor noise testing of tires, including linear and evenly spaced positioning brackets and a positioning benchmark, characterized in that the positioning bracket includes a bottom support frame, a lower support frame is installed on the upper part of the bottom support frame, a middle bracket with a marking line is installed on the top of the lower support frame, an upper bracket is installed on the top of the middle bracket, and a microphone mounting hole and a marking line are provided on the upper bracket. The positioning bracket is a hollow tubular structure, and a hammer ball hanging ring is installed in the inner cavity at the top of the upper bracket, which is located at the bottom support frame. The hammer ball at the bottom of the frame is fixed to the hammer ball lifting ring through a lifting rope, a locator is installed on the top of the upper bracket, the locator includes a locator bracket, a laser mounting groove is installed on the locator bracket through an adjusting screw, a laser aiming hole is installed on the locator bracket in front of the laser mounting groove, a laser transmitter is installed in the laser mounting groove, the positioning benchmark includes a benchmark bottom support and a vertical pole installed on the top of the bottom support, a vernier is installed on the vertical pole through an adjusting bolt, the positioning benchmark is a tubular structure, and the hanging hammer at the lower part of the benchmark bottom support is fixed to the upper end of the inner cavity of the positioning benchmark through a hanging line.
[0005] The beneficial effect of the utility model is that the microphone array can be conveniently and accurately built before the tire noise test experiment, and the position of the microphone array can be flexibly adjusted after the experimental conditions change. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0007] Figure 1 A schematic structural diagram of the utility model.
[0008] Figure 2 It is a schematic diagram of the structure of positioning bracket A.
[0009] Figure 3 It is a schematic diagram of the local structure of positioning benchmark B.
[0010] In the figure, A. positioning bracket; A1. locator; A2. upper bracket; A3. middle bracket; A4. lower support frame; A5. bottom support frame; A11. laser mounting slot; A12. laser aiming hole; A13. locator bracket; A14. adjusting screw; A21. hammer ball lifting ring; A51. hammer ball; B. positioning pole; B1. vertical pole; B2. cursor. DETAILED DESCRIPTION
[0011] In the figure, the utility model includes a positioning bracket A arranged at equal intervals in a linear manner and a positioning mark B, the positioning bracket A includes a bottom support frame A5, a lower support frame A4 is installed on the upper part of the bottom support frame A5, a middle bracket A3 with a marking line is installed on the top of the lower support frame A4, an upper bracket A2 is installed on the top of the middle bracket A3, and a microphone mounting hole and a marking line are provided on the upper bracket A2. The positioning bracket A is a hollow tubular structure, and a hammer ball hanging ring A21 is installed in the inner cavity at the top of the upper bracket A2. The hammer ball A51 located at the lower part of the bottom support frame A5 is fixed to the hammer ball hanging ring A21 through a hanging rope, and the hammer ball A51 is used to locate and confirm that the structure is vertical. A locator A1 is installed on the top of the upper bracket A2, and the locator A1 includes a locator bracket A13. A laser mounting groove A11 is installed on the locator bracket A13 via an adjusting screw A14. A laser aiming hole A12 is installed on the locator bracket A13 in front of the laser mounting groove A11. A laser transmitter is installed in the laser mounting groove A11. The positioning benchmark B includes a benchmark bottom support and a vertical pole B1 installed on the top of the bottom support. A vernier B2 is installed on the vertical pole B1 via an adjusting bolt. The positioning benchmark B is a tubular structure. The pendulum at the lower part of the benchmark bottom support is fixed to the upper end of the inner cavity of the positioning benchmark B via a hanging line. The pendulum is used to locate and confirm that the structure is vertical.
[0012] The method of using the utility model is:
[0013] S1. Place the positioning pole B close to the tire sidewall, and use the internal hammer ball A51 to confirm that the pole B1 is vertical to the ground and on the tire symmetrical center plane.
[0014] S2. Align the lower end of cursor B2 on positioning bar B and fix it to the planned corresponding scale with the adjusting bolt on cursor B2.
[0015] S3. Install the y-axis locator A1 on the upper bracket A2, and fix and turn on the laser transmitter on the laser mounting slot A11, adjust the laser beam to pass through the two laser aiming holes A12, place the positioning bracket A on the symmetrical center plane of the tire, move it back and forth to adjust the distance so that the laser shines on the cursor B2, and fine-tune it back and forth according to the tire tread width so that the laser shines on the corresponding scale line. At this time, the position of the positioning bracket A can be determined.
[0016] S4. After the positioning bracket A in the center of the linear array is placed, replace the x-axis positioner and adjust the spacing between adjacent positioning brackets to the left and right sides respectively until the laser point just illuminates the corresponding scale line to determine the spacing between adjacent positioning brackets, and then locate the positions of other adjacent positioning brackets in turn so that the adjacent spacing remains consistent.
Claims
1. A microphone bracket device for indoor tire noise testing, comprising linearly arranged positioning brackets with equal spacing and a positioning pole, characterized in that: The positioning bracket includes a bottom support frame, a lower support frame is installed on the upper part of the bottom support frame, a middle bracket with a marking line is installed on the top of the lower support frame, an upper bracket is installed on the top of the middle bracket, a microphone mounting hole and a marking line are arranged on the upper bracket, the positioning bracket is a hollow tubular structure, a hammer ball hanging ring is installed in the inner cavity at the top of the upper bracket, the hammer ball located at the lower part of the bottom support frame is fixed to the hammer ball hanging ring through a hanging rope, a locator is installed on the top of the upper bracket, the locator includes a locator bracket, a laser mounting groove is installed on the locator bracket through an adjusting screw, a laser aiming hole is installed on the locator bracket in front of the laser mounting groove, a laser transmitter is installed in the laser mounting groove, the positioning benchmark includes a benchmark bottom support and a vertical pole installed on the top of the bottom support, a vernier is installed on the vertical pole through an adjusting bolt, the positioning benchmark is a tubular structure, and the hanging hammer at the lower part of the benchmark bottom support is fixed to the upper end of the inner cavity of the positioning benchmark through a hanging line.