Noise eliminating device for pneumatic tire
A noise reduction device and pneumatic tire technology, applied to tire parts, transportation and packaging, vehicle parts, etc., can solve problems such as difficult manufacturing, complex structure, and inability to eliminate broadband noise well, so as to achieve strong adaptability and avoid detachment effect
Active Publication Date: 2021-07-23
HEFEI UNIV OF TECH
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- Application Information
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Problems solved by technology
[0005] 1. When the Helmholtz resonator eliminates noise, it is necessary to change the volume or neck size of the Helmholtz resonator and to use multiple Helmholtz resonators of different sizes together. Its structure is complex and practical Difficult to manufacture in applications
[0006] 2. The resonator composed of a single Helmholtz resonant tube cannot eliminate broadband noise very well, but it is difficult to ensure that the combined resonator of multiple Helmholtz resonant tubes or multiple resonators are installed on the rim wheel balance
Method used
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Embodiment Construction
[0028] In this embodiment, the pneumatic tire noise reduction device is to set a resonator in the annular tire cavity formed by the tire and the rim.
[0029] see figure 1 , figure 2 , image 3 and Figure 4 , the resonator 1 is composed of several arc-shaped lumens 2 arranged in parallel; each lumen 2 is provided with a baffle plate 10, such as image 3 As shown, the lumen 2 is divided into front and rear two sections by the baffle plate 10, one section is an anechoic pipe section, and the anechoic pipe section is a quarter-wavelength tube with one end open and one end closed; the other section is a balanced pipe section, and the balanced pipe section has two ends closed cavities; such as Figure 4 As shown, tenons are provided on both sides of the resonator 1 respectively, and the resonator 1 is installed on the rim 4 by using the tenons.
[0030] In this embodiment, the resonator 1 is set as resonators at two relative positions, namely the first resonator and the seco...
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The invention discloses a noise eliminating device for a pneumatic tire. A resonator is arranged in an annular tire cavity formed by a tire and a rim; the resonator is formed by arranging a plurality of arc-shaped tube cavities in parallel; a baffle plate is arranged in each pipe cavity, each pipe cavity is divided into a front section and a rear section by the baffle plate, one section is a silencing pipe section which is a quarter-wave pipe with one open end and one closed end, and the other section is a balance pipe section, and the balance pipe section is a cavity with two closed ends; tenons are arranged on the two sides of the resonator respectively, and the resonator is installed on the rim through the tenons. The noise eliminating device is simple in structure and can effectively realize broadband noise reduction.
Description
technical field [0001] The invention relates to a noise silencing device for reducing tire cavity resonance noise, more particularly, a noise silencing device for pneumatic tires. Background technique [0002] With the advancement of science and technology and the development of the automobile industry, the noise of vehicle engines has been effectively improved, so the proportion of tire noise in vehicle noise has increased. The cavity resonance of tires is an important mechanism for tire noise. [0003] Tire cavity resonance noise refers to the resonance generated in the circular cavity inside the tire due to the uneven road surface, which causes the wheel to vibrate. When the vibration is transmitted to the vehicle body through the suspension, it generates noise in the cabin. Specifically, it means that during the tire movement, a huge peak value will be generated between 150Hz and 300Hz. The origin of cavity resonance noise is the first-order resonance phenomenon inside t...
Claims
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IPC IPC(8): B60C19/00
CPCB60C19/002
Inventor 张永斌王晓龙张小正毕传兴
Owner HEFEI UNIV OF TECH