Saturated soft loess foundation pit slope anchor rod drilling device

The utility model belongs to the technical field of saturated soft loess foundation pit side slope anchor rod drilling, and particularly relates to a saturated soft loess foundation pit side slope anchor rod drilling device which comprises a soft soil layer drilling assembly, a bottom fixing assembly is arranged at the bottom of the soft soil layer drilling assembly, and a sound insulation assembly is installed outside the soft soil layer drilling assembly. The soft soil layer drilling assembly comprises a hydraulic lifting device, a rotation driving device, a mounting bayonet, a fixing nut, a mounting clamping block and a drilling steel pipe, the rotation driving device is mounted at the bottom end of the hydraulic lifting device, the mounting bayonet is rotationally connected to the bottom end of the rotation driving device, and the fixing nut is in threaded connection with the exterior of the mounting bayonet; a mounting clamping block is connected to the interior of the mounting bayonet in a clamping mann