...

The term 'rotary' in the name refers to the unique mechanism that sets it apart from other drilling tools. Unlike traditional drills, a rotary jackhammer employs a combination of rotation and hammering action, making it highly effective in breaking through hard materials like concrete, rock, and masonry. Its operational principle is based on a reciprocating piston, which generates a series of rapid blows, driving a chisel into the surface with immense force.

...

The evolution of coal mine tools reflects humanity's ceaseless quest for improvement and innovation. Each advancement in tool technology signifies a step toward greater efficiency, lower costs, and most importantly, enhanced safety measures. As we look to the future, the coal mining industry will undoubtedly continue to embrace technological improvements, balancing the need for energy production with responsible stewardship of both human life and environmental health.

...