Manhole cover maintenance and installation device and maintenance method

The manhole cover maintenance and installation device comprises a support, the support is provided with a threaded column in the vertical direction, the upper end of the threaded column is fixedly connected with a multi-edge rod, the support is provided with a positioning pipe used for limiting rota...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MA JUAN, WANG KANG, LEI XIN, YONG QIANGE, ZHENG PENGFEI, PEI YONGSHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	HAULING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD LIFTING PERFORMING OPERATIONS TRANSPORTING
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