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In this paper, the steering system dimension of multiple wheel heavy vehicle which is composed of center-arm linkage type steering mechanism has been designed. The steering mechanism of the vehicle is composed of five axles of Watt-II center-arm six-bar mechanism. The vehicle is designed to meet the steering requirements. Based on the Ackerman principle of vehicle steering, the mathematical model of steering mechanism is established, and the precise steering angle is determined. Then the corresponding calculation program has been written by using MATLAB software, and the Broyden’s iterative algorithm has been used. The each bar dimensions of the center-arm six-bar mechanism has been obtained through cyclic approximation. Finally, the kinematics simulation and error analysis of the steering mechanism are carried out, and the results show that the steering mechanism can meet the steering requirements of the vehicle. Keywords—heavy vehicle; six bar mechanism; dimension design; Ackerman principle

Design and Error Analysis of The Linkage Type Steering Mechanism for Multiple Wheel Heavy Vehicle