The invention relates to the technical field of
forestry planting, and discloses a
forestry planting pit digging device which comprises a mounting plate and a soil drilling
assembly connected to the mounting plate and further comprises a
control rod for driving the soil drilling
assembly to move up and down and a transmission
assembly for driving the soil drilling assembly to rotate. The soil drilling assembly comprises a
drill rod, a
drill bit located at the bottom of the
drill rod and a
universal joint connected between the top of the drill rod and the
control rod, and the two ends of the
universal joint are rotationally connected with the drill rod and the
control rod correspondingly. The
drill bit penetrates through the mounting plate and is positioned below the mounting plate; the transmission assembly comprises a first
bevel gear, a rotating sleeve, a second
bevel gear, a first transmission gear, a second transmission gear and a mounting sleeve, the first
bevel gear is fixedly arranged on the rotating sleeve in a sleeving mode, the rotating sleeve is rotationally mounted on the mounting plate, the drill rod is arranged in the rotating sleeve in a penetrating mode, and a connecting sleeve is arranged at the bottom end of the control rod; the connecting sleeve is fixedly connected to a rotating shaft of the first transmission gear; and rollers are arranged at the bottom of the mounting plate. The device can adapt to the
terrain of the forest land and is convenient to move in the forest land.