Safety early warning device for underneath pass railway bridge road construction

The utility model relates to the technical field of road construction. The invention relates to an early warning device, in particular to an underneath pass railway bridge road construction safety early warning device. Including a housing, the bottom of the shell is connected to a supporting plate t...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GUO YUEMEI, GUO LEI, GU RUIYI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FIXED CONSTRUCTIONS
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