| 摘要 |
FIELD: mining industry. ^ SUBSTANCE: device has chisel, body, rock-destroying means placed in side grooves of body with guides, stabilizer, mounted moveably on the body and provided with connection sleeve and rock-destroying means, additional connection sleeve, moveably mounted on body and made with side stopping ports, wherein rock-destroying means are placed. ^ EFFECT: broader functional capabilities, higher efficiency. ^ 3 cl,1 dwg |
