Constant-resistance anchor rod tray

The invention discloses a constant-resistance anchor rod tray. The constant-resistance anchor rod tray comprises a shell, a piston body and a sidewall protection disc. The sidewall protection disc is fixedly installed on the shell in a sleeving and welded mode. The piston body is installed closely a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHOU ZE, LI QINGFENG, ZHU CHUANQU
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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