Special drill for beat resistance rocks

The invention discloses a special drill for beat resistance rocks. The drill comprises a drill stock and a drill body, wherein the drill body comprises at least two groups of screw tool bits; the screw tool bits are fixedly connected with the front side of the drill stock; a cooling water channel is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG SONGLIN, GAO XU, OUYANG GUANGCHEN, WEI BINGXIANG, WANG CHUANHUI, LI LIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The invention discloses a special drill for beat resistance rocks. The drill comprises a drill stock and a drill body, wherein the drill body comprises at least two groups of screw tool bits; the screw tool bits are fixedly connected with the front side of the drill stock; a cooling water channel is formed in the middle of the drill stock; the cooling water channel penetrates through the two endsof the drill stock in the length direction; a channel opening and closing device is arranged at one end, close to the drill body, of the cooling water channel; when water is supplied to the interior of the cooling water channel, the cooling water channel is communicated with the outside; when water is not supplied to the interior of the cooling water channel, the channel opening and closing deviceisolates the communication of the cooling water channel from the outside. The drill can ensure that the cooling water channel is communicated with the outside through the channel opening and closingdevice when water is suppli