Safe automatic drill rod feeding-discharging device

• Main Authors: CHEN YI, WU JUNFENG, WANG PENG, ZANG PENG, ZHONG JIU'AN, LI QIAOBIN, WANG BIN
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2020
• Subjects: 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

The invention discloses a safe automatic drill rod feeding-discharging device which comprises a lifting drilling machine head (3), a drilling machine seat (1) used for driving the lifting drilling machine head (3) to move up and down, and a hole sealing device (8) arranged at the top of the mouth of a well; an output shaft of the lifting drilling machine head (3) is connected with a drill rod fixture (5), and the drill rod fixture (5) is arranged over the hole sealing device (8); the right side of the hole sealing device (8) is provided with a drill rod rotation feeding device (6), and the drill rod rotation feeding device (6) is provided with a plurality of drill rod clamping devices (11) in the circumferential direction; and the top of each drill rod is provided with a conical internal thread (12) arranged in the axial direction, the column surface of the bottom of each drill rod (7) is provided with a conical external thread, and the column surface of the upper end portion of each drill rod (7) is provided