It can increase the hole inclination Angle range and drill elevation Angle holes, while setting the top drive power head and hole top plate toward the opposite direction.
动力头及孔口板调转方向，可直接钻凿仰孔，大大增加钻孔倾角范围。
2
A fixing baffle plate is provided above two ends of the top of a rubber chamber to restrict the rubber chamber to move up and a vertical Angle stand-wedge to sway over or move up too.