Mining clamping type three-legged reamer bit

The utility model discloses a mining clamping type three-legged reamer bit which comprises a Y-shaped clamping jaw, the clamping jaw can be matched with the top of a compact bit in a clamping mode, three end points of the clamping jaw are respectively provided with a vertical scraping drill rod in a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHEN PING, SU HUI, MA GANG, WANG YONGSHUN, LIAN YONGSHUAI, SUN SONG, HOU QINGSONG
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:The utility model discloses a mining clamping type three-legged reamer bit which comprises a Y-shaped clamping jaw, the clamping jaw can be matched with the top of a compact bit in a clamping mode, three end points of the clamping jaw are respectively provided with a vertical scraping drill rod in a welding mode, and the three scraping drill rods are distributed around the compact bit. The drill scraping rod and the Y-shaped clamping jaw form a three-foot type drill bit structure, when the drill bit is used, the drill bit is directly connected to a groove in the top of the compact drill bit ina clamped mode, the compact drill bit does not need to be disassembled and then a new drill bit does not need to be installed, work efficiency is improved, and meanwhile operation risks are reduced. 本实用新型公开一种矿用卡接式三足扩孔钻头,包括呈Y形的卡爪,卡爪能够与复合片钻头的顶部形成卡接配合,卡爪的三个端点分别焊接有竖直的刮钻杆,三根刮钻杆围绕复合片钻头分布;刮钻杆与Y形的卡爪形成三足式的钻头结构,使用时,该钻头直接卡接于复合片钻头的顶部凹槽,无需将复合片钻头拆卸再安装新的钻头,提高工作效率,同时降低了操作危险。