Design And Optimization Of Automatic Loading Machine With Adjustable Width

With the investment of infrastructure in our country,the cement industry has also developed rapidly,and the consumption of bagged cement is also increasing.However,the loading technology of cement is still in a relatively backward state.At present,the loading of cement mainly adopts manual loading and semi-automatic loading,which have the disadvantages of low loading efficiency and unable to adapt to a variety of models.This paper puts forward a scheme of adjustable width automatic loading machine and optimizes it according to the shortage of existing loading machine which can not adapt to different models.The main work of this paper is as follows:(1)This paper puts forward a scheme of high efficiency loading machine which can adapt to different models,and introduces the structure and loading process of the loading machine in detail.The loading machine designed in this paper consists of four parts: flat conveying device,mobile lifting device,bag placing device and stacking device.(2)In order to realize the stable and efficient work of the truck loader,it is necessary to ensure that its overall structure can have good mechanical properties under different working conditions.Therefore,this paper analyzes the stress of the important parts of the truck loader.The static analysis of lifting frame,swing package frame and palletizing device is carried out by using ANSYS Workbench,and the stress and deformation of lifting frame,swing package frame and palletizing device under different working conditions are analyzed The results of workbench analysis show that all parts can work well under the specified working conditions,which shows the rationality of the structural design of the loader.The first six natural frequencies are selected as the analysis object,and the vibration modes of each step are explained in detail.Comparing the natural frequency of each component with the excitation frequency of the loading machine system,it is found that the lifting frame,the swing package frame and the stacking device will not form resonance with the loading machine system in the working process.(3)The mathematical model of the telescopic mechanism of the truck loader is established,and the relationship between the displacement,speed and acceleration ofthe platform is obtained.Then the kinematics and dynamics simulation of the telescopic mechanism is carried out by using ADAMS,and the motion parameter image and the force characteristics of the mechanism under acceleration and deceleration are obtained,which verifies the stability of the telescopic mechanism of the truck loader.(4)According to the previous static analysis,the mass redundancy of lifting frame,swing package frame and palletizing device can be obtained,and the lightweight design can be further carried out.The topology optimization method in ANSYS Workbench is used to lightweight the swing package frame and lifting frame.The optimized structure meets the requirements of strength and rigidity,and the mass is reduced by 16.41% and14.18% respectively compared with that before optimization.At the same time,the response surface optimization method is used in the lightweight design of the palletizing device,and the quality of the front and rear palletizing devices is reduced by 15.61%.Based on the finite element method,this paper analyzes and optimizes the key parts of the loading machine,which has high feasibility and practical significance for improving the working performance of the bagged cement loading machine,and provides theoretical guidance and practical support for the actual production and debugging of the loading machine in this scheme.