Anti-disengaging connecting device and anti-disengaging connecting assembly for drill rod
The invention provides an anti-disengaging connecting device for a drill rod, and anti-disengaging connecting assembly for the drill rod. The anti-disengaging connecting device comprises a connectingsleeve and an anti-disengaging member, wherein the connecting sleeve and a bit shank are coaxially ar...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides an anti-disengaging connecting device for a drill rod, and anti-disengaging connecting assembly for the drill rod. The anti-disengaging connecting device comprises a connectingsleeve and an anti-disengaging member, wherein the connecting sleeve and a bit shank are coaxially arranged, the bit shank is connected to one side of a jackdrill, one end of the connecting sleeve isinstalled on the periphery of the bit shank in a sleeving mode, and the drill rod is installed at the other end of the connecting sleeve; and the anti-disengaging member is installed on the connectingsleeve wall of the connecting sleeve, and is connected with a groove or a step part on the peripheral surface of the bit shank in an abutting mode so as to block the connecting sleeve in the axial direction of the bit shank to move towards the disengaging direction of the bit shank. The anti-disengaging member comprises bolts or expanding pins. The anti-disengaging connecting device and the anti-disengaging connecting asse |
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