1.Column spacing can be mobile, can meet a variety of maintenance requirements for car body. 2.Stand column track,one take of molding machinery processing,uniform load,run more smoothly. 3.Lifting bracket extraposition orientation,bearing capacity of large. 4.Using planetary cycloidal of pinwheel for reduce the speed,lead screw drive. 5.The nut with drive bracket,supporting forks for rise and fall,ensure the lifting level and steady. 6.The material of nut adopt macromolecule,abrasion resistance is high,maintenance-free, oil-free operation can be a short time.