Based on common characteristics in crane design, a new procedure of intelligent CAD for crane travelling mechanisms is proposed. The CAD used for crane travelling mechanisms is usually involved in choosing electrical ...Based on common characteristics in crane design, a new procedure of intelligent CAD for crane travelling mechanisms is proposed. The CAD used for crane travelling mechanisms is usually involved in choosing electrical motors.gear reducers,brakes and couplings, arranging travelling wheels and equilibrium beams.checking temperature increase of motors and slippage of driving wheels,estimating the time used for starting and stopping the cranes, drawing up the travelling mechanism.and so on. By enhancing the CAD, the related expert system and overall intelligent con trol are further developed here in treated as individual module. Accordingly,the intelligent CAD is constructed by combing the CAD with the two modules.展开更多
In this paper modelling of the translational motion of transportation rail-guided cart with rope suspended payload is considered. The linearly moving cart,driven by a travel mechanism,is modelled as a discrete six deg...In this paper modelling of the translational motion of transportation rail-guided cart with rope suspended payload is considered. The linearly moving cart,driven by a travel mechanism,is modelled as a discrete six degrees of freedom (DOF) dynamic system. The hoisting mechanism for lowering and lifting the payload is considered and is included in the dynamic model as one DOF system. Differential equations of motion of the cart elements are derived using Lagrangian dynamics and are solved for a set of real-life constant parameters of the cart. A two-sided interaction was observed between the swinging payload and the travel mechanism. Results for kinematical and force parameters of the system are obtained. A verification of the proposed model was conducted.展开更多
文摘Based on common characteristics in crane design, a new procedure of intelligent CAD for crane travelling mechanisms is proposed. The CAD used for crane travelling mechanisms is usually involved in choosing electrical motors.gear reducers,brakes and couplings, arranging travelling wheels and equilibrium beams.checking temperature increase of motors and slippage of driving wheels,estimating the time used for starting and stopping the cranes, drawing up the travelling mechanism.and so on. By enhancing the CAD, the related expert system and overall intelligent con trol are further developed here in treated as individual module. Accordingly,the intelligent CAD is constructed by combing the CAD with the two modules.
文摘In this paper modelling of the translational motion of transportation rail-guided cart with rope suspended payload is considered. The linearly moving cart,driven by a travel mechanism,is modelled as a discrete six degrees of freedom (DOF) dynamic system. The hoisting mechanism for lowering and lifting the payload is considered and is included in the dynamic model as one DOF system. Differential equations of motion of the cart elements are derived using Lagrangian dynamics and are solved for a set of real-life constant parameters of the cart. A two-sided interaction was observed between the swinging payload and the travel mechanism. Results for kinematical and force parameters of the system are obtained. A verification of the proposed model was conducted.
