KG420/KG420H型露天潜孔钻车是应国家对柴油机排放要求进行升级改进的一款设备。配备有玉柴动力非道路四缸国三发动机，满足国家对排放和环保的要求。采用折边履带架和工程四轮一带，增加履带调平，柱塞行走马达，提高工作压力，增大回转扭矩和转速，加大提升油缸和链条，提高提升力和可靠性。罩壳采用加厚型材折边，增加其强度和刚性。增加起吊吊环，方便装卸吊装。
The KG420KG420H down the hole drill rig for open use is an improved device in compliance with national requlations on diesel-engineemissions. Equipped with the Yuchai four-cylinder engine (China ), the drll rig meets national standards for emissions and environmentThe folding frame track and fourwheel drive are adopted; Add track leveling cylinders and the plunger piston tramming motor improveshe working pressure and increase the rolary toraue and revolving speed: and the ifing oi cylinder and chain are expanded to promolethe lifing force and reliability. The thickened profle folder is used for the housing, thus improving its level of intensity and rigidity; and theadditional ring makes handling and lifting convenient.
KG420H型露天潜孔钻车增加集尘器，工作时更环保、可靠。
The KG420H down the hole drll rig for open use is equipped with a dust collector, thus making operaton more environment-friendly and
reliable.
