Sound barrier installation device on narrow guardrail of high -speed road bridge roof beam

The utility model provides a sound barrier installation device on narrow guardrail of high -speed road bridge roof beam, including identical connecting plate and the panel of structure, vertical rigidcoupling has the riser on the terminal surface of panel, and the riser divides into the unequal two parts of area with the panel, the rigid coupling has the backup pad in the space that the less partof area is enclosed on riser and the panel, and the equipartition has four at least second connecting holes on the panel, and the panel was kept away from to the riser one end processing has quantityto be the first connecting hole of even number, the setting symmetrical for the backup pad of these all first connecting holes. This installation device utilizes wide base support in sound barrier installation basis for fixed H shaped steel stand is as the main bearing capacity structure of sound barrier, utilize the load that support structural decomposition screen riser bore to make screen riser and guardrail install int