The invention relates to a rotating
power output built-in hydraulic rock drilling
machine. The rotating
power output built-in hydraulic rock drilling
machine comprises a box cover, a box body, a transmission part and a
power output part. The transmission part comprises a
drill shank, a gland, a water sleeve, a guide sleeve and a gear shaft; the power output part comprises a long linkage shaft, a
stator and rotor pair, a valve disc, a flow distribution disc, a short linkage shaft, an oil distributing disc, an end cover, a transmission shaft, an oil
inlet channel and an oil returning channel; the power output part is located below the
drill shank, the oil distributing disc, the flow distribution disc, the valve disc and the
stator and rotor pair are sequentially arranged in the box cover from left to right, the left end of the long linkage shaft is in spline fit in a cycloidal rotor, the left end of the short linkage shaft is in spline fit in the flow distribution disc, and the right endof the short linkage shaft is in spline fit in the cycloidal rotor. The number of bearings and gear components is reduced, direct transmission output is achieved,
kinetic energy losses are reduced, transmission stability is improved, space size and weight are saved, field mounting and maintaining are facilitated, the influence of field stone falling and work water is avoided, the field productionefficiency is improved, and worker labor intensity is reduced.