| 摘要 |
The invention discloses a sound-absorbing method for a magnetic levitation traffic line. Sound-absorbing devices are arranged on the lower-middle part of a track beam, and a plurality of sound-absorbing devices are arranged on the whole track beam one by one. During installation, the sound-absorbing devices are connected with the track beam through expansion bolts, and damping rubber gaskets are arranged between the sound-absorbing devices and the track beam. The sound-absorbing devices comprise cavity frameworks, sound-absorbing plates and facing plates, wherein the sound-absorbing plates are arranged on the upper parts of the cavity frameworks; the facing plates are connected to the outer side faces of the sound-absorbing plates. According to different shapes and structures of the cavity frameworks, the sound-absorbing devices comprise triangular sound-absorbing devices and L-shaped sound-absorbing devices. In the sound-absorbing devices, the sound-absorbing plates are made of a light porous metal material, so that the functions of ventilating and reducing pressure are realized while sound energy reflection is reduced according to the principles of resistive sound absorption and throttling-expansion-depressurization. |
