What Is A Down-the-hole Drilling Rig?

The essence of down-the-hole rock drilling is to make the impactor dive into the hole during the rock drilling process to reduce the energy loss caused by the impact energy transmitted by the drill rod, thereby reducing the impact of hole depth on rock drilling efficiency. The rock drilling equipment for down-the-hole drilling is a down-the-hole drilling rig. Commonly used models in underground mines in my country include YQ-80, YQ-100 and QZ-165.
Background introduction
Figure 1 shows the appearance of the YQ-100 down-the-hole drilling rig, which consists of a rotary mechanism, a lifting mechanism, a pushing mechanism, a supporting mechanism and an impact mechanism.