【摘要】 双钻具钻进回转供风、排渣机构是动力头的关键部分,其密封装置的运转质量又是钻机正常运转的重要保证。叙述了旁侧供风和中心供风的结构形式,着重介绍了排渣系统的密封件选择及结构特点。更多还原

【Abstract】 Rotary air supply and slag removal mechanism for double-tool drilling are the key parts of the power head,and the operation quality of its sealing device is the important guarantee for drilling machine normal operation.The structure forms of flanking and central air supply are described,the choice of sealing elements and structural characteristics of slag removal system are emphatically introduced in this paper.更多还原