Self-control rotary hammer

• Main Authors: LI PENGCHENG, WANG DONGWEI, YIN YONGQING, HU HAIXU, WU YUNDUO, LIU ZHEN, YIN AOBO
• Format: Patent
• Language: Chinese; English
• Published: 28.12.2021
• 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 provides a self-control rotary hammer. The self-control rotary hammer comprises a drill body; an upper oscillation mechanism, a motor assembly, a lower oscillation mechanism and a transmission shaft are sequentially arranged on the drill body; the upper oscillation mechanism is connected with the motor assembly through an upper universal shaft and used for controlling the flow of drilling fluid to change periodically; and the lower oscillation mechanism is connected with the motor assembly through a lower universal shaft and used for providing periodic thrust for the transmission shaft. According to the technical scheme of the self-control rotary hammer, the upper oscillation mechanism is arranged in the drill body, so that the flow of the drilling fluid can be controlled to change periodically, and the hydraulic pulse is formed for the motor assembly; the lower oscillation mechanism is connected with the transmission shaft and is driven by the motor assembly, and the rock breaking efficiency of