The present invention discloses a trenching
machine for concrete
asphalt ground, including a frame, a
power unit, a traveling mechanism, a
cutting and crushing device, a trenching and soil dividing device and a hydraulic
system. There are two traveling mechanisms, which are symmetrically arranged on both sides of the frame, and the
power unit is connected to the traveling mechanism. The trenching and soil dividing device is arranged on the rear side of the vehicle body. The
cutting and crushing device is arranged at the front end of the frame through a front support frame, and includes a transmission shaft, a crushing
assembly, and a
cutting blade. The transmission shaft is connected to the
power unit through a first
transmission belt. The cutting blade is arranged on the cutting blade
drive shaft, and the cutting blade
drive shaft is connected to the front support frame through a cradle. The crushing
assembly includes a sleeve, an
impact rod and an eccentric wheel. The
impact rod is vertically movably arranged below the transmission shaft through the sleeve, and an
impact head is arranged at the lower end thereof. The eccentric wheel is arranged on the transmission shaft. The structural design of the present invention is reasonable, cutting and crushing are performed first, and then rapid excavation is performed. The trenching depth can be adjusted to achieve
deep excavation, replacing manual trenching, saving time and labor, and having high work efficiency.