Collapse detection alarm device

The utility model discloses a collapse detection alarm device. A line pipe is fixedly arranged in the road surface, a metal ball is fixedly arranged in the road surface, a connecting line is fixedly bound on the metal ball, and the connecting line is inserted into the line pipe in a penetrating mann...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHOU SHIKUN, LIU ZHAOBO, LYU JIAN, CU BAOPING, WANG XIAOWEN, MA XIAOLI, ZENG YILONG, BAI ENLI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!