Design And Kinematic Simulation For Manipulate Machine With Concentrative Link Lever On Bulldozer

It is one of the development directions for bulldozer that advance its maneuverability and improve driver's labor circumstances. However, the existing manipulate mechanism of bulldozer in China for shifting and steering lies in many problems, such as redundant operating lever and difficult in arrangement, etc, and disadvantages driver's operation. So, it is necessary to design new-style manipulate mechanism.At present, adoptive new-style manipulate mechanisms abroad are mainly manipulate mechanism with concentrative link lever and that linked forerunner with link lever. Thereinto, the former cancels traditional operating lever for steering, shift and operating direction, integrates these functions into one operating lever and controls it to realize all the operations of bulldozer using elbow joint's action. Manipulate mechanism with concentrative link lever has important significance to improve maneuverability of bulldozer currently.This thesis includes: designing manipulate mechanism with concentrative link lever and simply calculating force and displacement for operation, based on the referring existing manipulate mechanism of bulldozer; using high-grade 3-dimensional plotting software UG ( Unigraphics ) to sculpt; using ADAMS (Automatic Dynamic Analysis of Mechanical Systems) to establish virtual prototyping model and do kinematic simulation. The results verify the rationality of this mechanism and provide the basis for trial-manufacture of physical prototyping and betterment design.