CONNECTING MECHANISM OF EXPANSION PART ON MOVABLE BED BASE

PURPOSE:To cope with movement in the curving direction in the case of drilling a tunnel by connecting a front end part or a rear end part of a cylinder free to adjust to expand it to alternately slide a front bed base and a rear bed base through a universal joint by way of simultaneously expanding a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KAKEGAWA KATSUYUKI, SHIMANOE YOSHINOBU, UTSUNOMIYA SHUNJI, NAKAJIMA YOSHIO, KOBAYASHI HIROMI
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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