Integrated retaining ring and bushing

A piston-actuated drilling tool includes a housing, a top joint, a piston, and a drive joint; a piston having a nose at the front end thereof, the nose being slidably mounted for reciprocating movement within the housing and striking a spindle located at the front end of the housing; wherein there is an integrated retaining and bushing system comprising a retaining ring for preventing the mandrel from disengaging from the remainder of the tool, the retaining ring surrounding a bushing for cooperating with the nose of the piston to help stabilize and guide the piston and provide a timing action for an impact. 一种活塞致动钻进工具，其包括壳体、顶部接头、活塞和传动接头；该活塞在其前端处具有鼻部，该鼻部以可滑动方式安装，以用于在所述壳体内进行往复运动，并且该鼻部撞击位于所述壳体的前端处的心轴；其中，存在集成式保持和衬套系统，该集成式保持和衬套系统包括保持环，该保持环用于防止所述心轴从所述工具的其余部分脱离，该保持环包围衬套，该衬套用于与所述活塞的鼻部协作，以帮助稳定和引导所述活塞，并为冲击提供正时动作。