Dig many grades of mode control devices of rig unit head soon and dig rig soon

The utility model relates to a dig many grades of mode control devices of rig unit head soon, including switch, battery, pressure sensor, unit head mode conversion switch, controller, ratio adjusting valve, the utility model discloses it digs the rig including above-mentioned controlling means soon also to relate to one kind. The utility model discloses the output torque and the rotational speed that enable the unit head can be according to the geological conditionss of difference and the change to make the geology operating mode of digging the rig soon and can adapt to the difference, especially adapt to the construction operating mode of hard formation more, satisfy the different demands of multiple geological conditions to unit head moment of torsion and rotational speed.