| 摘要 |
<p>A small-resistance high-efficiency mining device with multiple layers of percussion heads comprises a percussion power box (3) and percussion heads (2). The percussion heads (2) are disposed at one end or two ends of the percussion power box (3). Each end of the percussion power box (3) is provided with two or more percussion heads (2). The two or more percussion heads (2) are arranged one above the other or laterally, thereby increasing the mining height and/or mining width. The device has reliable performance and strong manufacturability, is easy to process and manufacture, and has a long service life.</p> |
