The main principle of a hydraulic drilling machine is to convert liquid pressure into mechanical power through a hydraulic system to achieve drilling operation. The specific process is as follows:

Hydraulic system oil supply: The hydraulic system converts liquid pressure into power through a pump and sends hydraulic oil to various hydraulic components of the drilling machine.

Drill pipe down: Driven by hydraulic cylinder, the drill bit is down to contact the bottom of the drilling well. The hydraulic system controls the movement of the hydraulic cylinder so that the drill rod can be moved to a designated position.

Drill Pipe Rotation: The hydraulic motor drives the drill pipe to rotate through the power provided by the hydraulic system. The rotation of the drill rod allows the drill bit to perform drilling operations quickly and stably.

Lifting drill pipe: When the drill pipe needs to be lifted, the hydraulic system will lift the drill pipe through the hydraulic cylinder, causing the drill bit to leave the bottom of the drilling well. The hydraulic system will control the movement of the hydraulic cylinder and lift the drill rod to the designated position smoothly.

Flushing the bore: The hydraulic system can also provide pressure through a water pump to inject clean water from the drill rod into the drilling well, flushing the borehole to ensure the smooth progress of drilling operations.