Basing on the 《Design Criterion of the Crane》 and its characteristic, this article introduces the design method of the level moving machinery for the 0.

Adjustable hydraulic brake for traveling mechanisms of overhead and gantry cranes;

The emitting cracks often emerged resulting in a hole at supported flats in a crane traveling mechanisms.

Through deep understanding and learning the concept of the visualization design, it completes visualized design software of gantry crane metal structure and gantry crane traveling mechanism based on object-oriented programming language Visual C++ on the platform of Windows, both have their distinctive features.

The paper carries out the theoretical discussion on the checking formulae of the power and the output shaft strength forthe selection of retarders of the crane operating mechanism from miscellaneous data and puts forward the idea to follow thecomputing methods of the Design Specification for Cranes.

The self-excited frictional vibration of the operating mechanism caused by the main wheelsliding on the track under quick starting or braking condition of the bridge-type crane is investigated.