Foundation excavation device for communication base station construction and construction method therefor

The invention discloses a foundation excavation device for communication base station construction and a construction method therefor.The foundation excavation device comprises a box body, a first hydraulic rod and a second hydraulic rod; a positioning plate is fixedly connected to the inner side wall of the box body; a motor is fixedly connected to the positioning plate; a driving gear is fixedlyconnected to the tail end of an output shaft of the motor; a first rotating shaft is rotatably connected to the inner side wall of the box body; a first driven gear is fixedly connected to the outerside wall of the first rotating shaft; and a first semicircular gear is fixedly connected to the outer side wall of the first rotating shaft. When a transmission rod moves to the highest point, the motor is turned off, and the first hydraulic rod is turned on; a discharge plate is pushed downwards through the elastic force of a spring, so that soil falls onto the discharge plate and then is discharged from a material outle