| This paper, based on the engineering practice, performs the construct static analysis on automatic ladder by the soft of ANSYS5. 5, which is the accepted internationally soft of the finite element analysis, and achieves the scheme of the structure design and processing treatment to enhance the reliability of the ladder to work, and to eliminate the factor of the risk, and to produce the huge the economical and social benefit.Through the finite element analysis of ANSYS5. 5, such results as the list of the reaction force, deformation figure of the truss the contour of the nodes displacement, the contour of the element stress, and the contour of the node stress, are attained under the static force, the analysis of the finite element show that the maximum stress reaches the value of 285Mpa, and then the frame body has thelarger stress concentration in this position, if the welding around is not adopted. So the circumjacent welding should be applied at this spot and another join symmetrical to it, all sides of the place at which angle iron join are welded around with the main beam. Only through such construction, the automatic ladder could meet the requirement of the design intensity. |
