The utility model discloses a fixed knot that oil pipe way is inhaled to mining dump truck major diameter constructs, inhale oil pipe including fixing device and three major diameter, fixing device is the box structure, can inhale oil pipe with three major diameter and parallel unsettled fixing on the frame, every major diameter is inhaled the oil pipe way and is included steel pipe I, hose, steel pipe II and hose, and the hose is passed through to steel pipe II's one end, clamp I is connected with steel pipe I, and steel pipe II's the other end passes through clamp II and hose connection, the steel pipe II install in fixing device. The utility model discloses an in car shelf location fixing device's mode, provide and arranged big pipe diameter, low flow resistance, the effective fixed mode of the compact pipeline in space has guaranteed to inhale the fixed safe and reliable in oil pipe way, and the friction of having avoided big span to inhale oil pipe way shake and pipeline and frame and equipment when the vehicle goes has improved and has inhaled the life -span on oil pipe way and the security of vehicle.