Engineering Drilling Rig (GM-20A)

GM-20A Engineering drilling rig, a light weight big-hole engineering drill, is im0proved and designed based on GM-20 drill. The new type drill unites the tower and machine body.

This type of drill integrates the drill's advantages of the type's turn plates, the power heads and the main shaft drills. The drill has such advantages as high drilling efficiency and precision, powerful torque, wider ranges of speed and smaller coefficient of oversize of hole. It can drill in the ways of forcing feed or reducing bit load drilling by hydraulic system. Oil cylinders of the drill can raise or pull down the tower safely and quickly, move and fit the hole position conveniently. After moving the machine, the bit of two meter diameter can be directly lifted or run in. Height of the tower is ten and five meters, which can directly pull down the steel cages. The assistant hoist's capacity is strong. The drill is equipped with step device as to fitting the hole position conveniently. The control handlebars are collected so easy to operating. The drill can be used in the drilling technologies of normal or reverse circulation in the quaternary period gravel or hand rock ground. The drill can be mainly used for big-hole grouting pole holes drilling of high building, port and bridge.