Cylinder type draw gear of deep hole boring lathe protecting cover

The utility model discloses a cylinder type draw gear of deep hole boring lathe protecting cover, including support component, power part, power supply part, stay cord, the support component is including supporting riser, pulley, and the connecting axle of pulley is fixed on supporting the riser, power part is including drawing disc, gear, piston cylinder body, base, rack, pivot, the base is provided with disc fixed bolster and cylinder body fixed bolster, pulls the disc, the gear is fixed in the pivot, and the both ends of pivot are connected on the disc fixed bolster, the piston cylinder body includes piston rod, front end housing, cylinder, rear end cap, piston, and front end housing, rear end cap set up respectively at the cylinder both ends, and piston rod one end is connected on thepiston, the rack is fixed on the piston rod, and the rack meshes with the gear mutually, the cylinder is fixed on the cylinder body fixed bolster, the power supply part passes through tube coupling front end housing or rear e