Drilling mechanical arm

The invention belongs to the technical field of subway construction, and particularly relates to a drilling mechanical arm. The drilling mechanical arm comprises a base 2 and is characterized in thata rotating base 9 is arranged on the base 2, a main mechanical arm motor 11 is arranged on the rotating base 9, a rotating shaft of the main mechanical arm motor 11 is connected with the lower end ofa main mechanical arm 12, a height adjusting arm motor is arranged at the upper end of the main mechanical arm 12, a rotating shaft of the height adjusting arm motor is connected with the lower end ofthe height adjusting arm, an angle adjusting arm motor 18 is arranged at the upper end of the height adjusting arm, the angle adjusting arm motor 18 is connected with the lower end of an angle adjusting arm 17, and a drilling arm 21 is arranged at the upper end of the angle adjusting arm 17. 一种钻孔机械臂属于地铁施工技术领域，尤其涉及一种钻孔机械臂。本发明提供一种钻孔机械臂。本发明包括底座2，其特征在于底座2上设置有旋转底座9，旋转底座9上设置有主机械臂电机11，主机械臂电机11的转轴与主机械臂12下端相连，主机械臂12上端设置有高度调节臂电机，高度调