To improve the poor design method of overhead traveling crane

this paper analyzes the configuration characteristics of overhead traveling crane's bridge structure

partitions bridge structure into modules with modularization idea

proposes an efficient parametric modeling way

adopts parametric program design and introduces database design to manage primary parameter data

discusses the automatic drawing adjustment design based on the parametric environment

then achieves automatic design from 3D model to 2D drawing.The practical application in Taiyuan Heavy Machinery Group Corporation shows that the technology greatly improves design efficiency and quality.