Coal bunker mediation is bored with digging brokenly soon to encircle

The utility model discloses a coal bunker mediation is bored with digging brokenly soon to encircle, including drill bit and hydraulic power unit, drill bit connection of after section has the pneumatic cylinder, the pneumatic cylinder bottom is provided with A circular base, base side equipartition articulates there are four flanks, the inboard articulated connecting rod that has of flank, the connecting rod other end is articulated with drill bit and pneumatic cylinder junction, the base is kept away from and is connected with hydraulic motor on the side of pneumatic cylinder. This technical scheme's coal bunker mediation is bored with digging brokenly soon to encircle, simple structure, low in manufacturing cost, work safe and reliable, the suitability is strong, encircles the motion through digging soon with break, dredge efficiently, avoids the manual work to dredge the potential safety hazard of bringing, dredges effectually under the high viscosity environment. 本实用新型公开了种煤仓疏通用旋挖破拱钻，包括钻头和液压泵站，所述钻头尾部连接有液压