The conductor leader movement mechanism is the most important and complicated among the transmission systems of the semi-pantograph outdoors high-voltage disconnector.

That the simulation of oscillating guard bar mechanism is the principal part of the traction drive apparatus designed by the authors based on the Simulink of MATLAB is discussed in this paper.

Kinematic simulation of crank shaper mechanism based on Matlab;

This paper introduced the practical application of moving leader mechanism in designing feeding,analyzed the movement parameters and the dynamical static parameters of the mechanism,discussed the questions on designing its components geometrical parameters.