GEAR GUIDING FLEXIBLE ELEMENTS TO HAMMER DRILL Russian patent published in 2001 - IPC

FIELD: mining industry, design of carriages for drilling equipment. SUBSTANCE: proposed gear is meant to guide flexible elements such as hoses around drum along feeding beam towards moving hammer drill. According to invention flexible elements are set around one and same drum in two consecutive layers in radial direction of drum. Each radial layer is set on axle in such manner that it can rotate about axis of drum independent of other layers. Structure of drum includes several discs between which grooves to accommodate at least one of flexible elements are formed. Two flexible elements as minimum are capable of rotation around drum and each flexible element can rotate about axle of drum independent of other flexible elements. EFFECT: raised functional reliability of drilling carriages. 9 cl, 4 dwg