The flexible drawing of the tractor trailer combinations has been optimized, the simulation analysis of the dynamics equations and the riding comfort tests have been performed.

By making example of QCL03 bunker-cleaner,this paper proposes the qualitative analysis methods on the pulling performance of full hydraulic-driving vehicles whose power installation is explosion-proof electric motor and gains the practical performance curves of the real electric motor,then makes substitution of the formulas to make a quantitative analysis on the pulling performance.

By making example of the double drive loader,this paper proposes the qualitative analysis methods on the pulling performance of full hydraulic-driving vehicles whose explosion-proof electric motor and diesel engine, at gaining the actual performance curve of the electric motor or diesel engine, then makes substitution of the formulas to make a quantitative analysis on the pulling performance.

Objective: A modification of the traditional arch wire splint craniomandibular elastic traction in maxilla fracture reduction, observation the effectiveness.

Numerical simulation of tractive performance for planetary rover vehicle wheel by discrete element method;

Research on Tractive Performance Matching for Wheel Loader;

Based on the construction conditions of the four track slipform paver,the occurrence of the tractive effort of the four track drive vehicle and the law on which tractive effort changes on different work conditions are analyzed and it is drawn that the tractive performance can be improved by increasing the velocity rigidity of hydraulic drive system of tracks.