Drilling device for civil engineering

The drilling device for the civil engineering relates to the technical field of the civil engineering and comprises a bottom plate, a support is fixedly connected to the top of the bottom plate, a drilling mechanism is arranged on the inner side of the support and used for drilling a construction site, and top plates are fixedly connected to the top ends of the two sides of the support. Lifting supporting mechanisms are arranged between the top plate and the bottom plate, the lifting supporting mechanisms are used for being synchronously switched into corresponding supporting modes in different working states, and a second fixing plate is fixedly connected between the top of the support and the top of the top plate. The hydraulic cylinder is arranged to push the lifting plate to move, downward pressure is provided for the spiral drill bit to be matched with drilling, so that rapid drilling is achieved, meanwhile, the hydraulic cylinder can accurately and flexibly control the pressure of the hydraulic cylinder