Concrete pile hole drilling device

The invention relates to the technical field of drilling construction, in particular to a concrete pile hole drilling device which comprises a support module, and a driving module is mounted on the support module; the drilling unit is connected to the driving module, the drilling unit comprises a connecting rod component connected to the driving module, a connecting component is installed at the lower end of the connecting rod component, and a drill bit component is detachably installed at the lower end of the connecting component; the limiting unit is connected to the support module and used for limiting transverse movement of the connecting rod component. The connecting component is matched with the drill bit component, so that the connecting rod component and the drill bit component can be quickly mounted and dismounted, the replacement efficiency of the drill bit component is improved, and the replacement difficulty of the drill bit component is reduced. 本发明涉及钻孔施工技术领域，特别涉及一种混凝土桩孔钻挖装置，包括支架模块，所述支架模块上安装有驱动模块