Optimization of the control on the falling reference of the grab bucket of ore ship unloader;

Application of laser measurement and alignment system to proper alignment of reel shaft of ship unloader;

Properties of bridge-type grab-bucket ship unloaders in Taishan Power Station;

The emphases were characteristics of the multidrive AC variable-frequency control system which was firstly used on the ship-unloader in our country.

Taking ship-unloader as objective of study,the paper builds beam-shell mixed model by means of plate and shell theory and finite element method,analyzes details of structure of ship-unloader and puts forward a better way to dealing with details of steel structure of large port machine.

In order to reduce the high fault rate occurring in the induction motor of the ship-unloader,this paper presents a new method for motor fault diagnosis of the ship-unloader,which combines the technology of wavelet packet decomposing and nerve network technology.

Modeling and Simulation for Electrical Driving System of Electrical Differential Driving and Four Drumms Bridge Grab Bucket Unloader;

This paper brings a novel four-drum electrical differential control system of bridge-type grab ship unloader.

Finite element models of double-trolley container overhead traveling crane and grab shipunloader are built, Dynamic response coefficients of the two kinds of harbor machines are worked out and are compared to those specified in related crane design specifications, The methods and results given in this paper can be a reference for the related.

The method is used in grab shipunloader parameterized design and the comparison of the results and the ones from overseas shows that the method is correct and practical.

Calculation of double-hopper grab ship unloader;

New performance evaluation method of grab ship unloader;