MULTI-PERCUSSION CAM MECHANISM FOR DRILLING MACHINES

摘要

FIELD: mining. ^ SUBSTANCE: invention refers to percussion mechanisms designed for implementation in drilling percussion machines for destruction of fragile mediums. The invention significantly increases drilling tool effect onto bottom thus increasing efficiency of operation. The multi-percussion cam mechanism consists of an end cam and of a puller-anvil block with a roller secured on the latter; also the cam is made with several sections of anvil block cock; sections of the cock are arranged successively and differ one from another in height of profile; this causes change of a run of the puller-anvil block from section to section of the cock. ^ EFFECT: creation of multi-percussion cam mechanism able to perform several different by force percussions to drilling tool per one turn of cam. ^ 2 dwg