Abstract
Aiming to solve the severe wear of wire of rocker arm on crown-mounted compensator, the working principle of rocker mechanism is analyzed and mechanical properties of wire is calculated by a model based on Simulink. To reduce the contact stress amplitude between the wire rope and three pulleys on the rocker mechanism, the multi-objective optimization design model of rocker mechanism is constructed. In addition, the length of rocker and linkage arm are considered as design parameters by using MATLAB software. The results showed that the contact stress of wire rope decreased by 21.6%, when the length of rocker and linkage arm is respectively 3450mm and 5900mm, which significantly reduced the possibility of fatigue failure and the wear loss of wire rope.
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