The Self-propelled Boom Sprayer And Oil-gas Suspension’s Simulation And Experiment Based On Ride Comfort

It is bound to cause large-scale self-propelled lance spray machine body shaking and hence to cause the bearing liquid to impact the medicine cabinet and vibration of the spray beam when work in the environment of complex land form of agriculture and forestry.Liquid shaking is not only caused impulsive load from liquid to the structure of medicine box,lead to fatigue damage of the structure,but also can cause the change of the liquid gravity,may change the spray machine’s center of distribution of gravity and impact the efficiency of load lance spray machine and spray effect.On the basis of consulting a large number of literature and investigation work,take the large boom sprayer of chassis suspension of oil-gas as the object of study,by analyzing the study of oil-gas suspension to improve the balance of the chassis,reduce the body shaking caused by the ground ups and downs,improve the balance between boom sprayer’s body and spray lance.Taking the MAZZOTTI MAF5240 sprayer as the test model,build the 3D modeling,the vehicle dynamics modeling and the oil-gas hydraulic pressure modeling for test model and combine ADAMS and AMESim simulation and running test of comfort by random input on the real vehicle and oil-gas suspension system test experiment.Thus evaluate the riding comfort of spray machine and performance of oil-gas suspension.The main study is as follows: Prepare for the topic conception and expand by referring to the domestic and foreign document and material,understanding the study status of the boom sprayer chassis suspension and oil-gas suspension.The nonlinear mathematical model of interconnect oil-air spring is established,considering the influence of the actual state of gas,oil compression and one-way valve open and close on damping force,analysis the performance and working principle of interconnect oil-air spring system.The 3D model of large-scale self-propelled lance spray machine is established,the multi-body dynamics model for vehicle is established by using the multi-body dynamics software ADAMS.Suspension hydraulic model is established by applying the AMESim hydraulic module and make a joint simulation for the whole vehicle model,through the simulation analysis get the vehicle’s comfort and suspension travel on different road surface,and shows that oil-gas suspension has a good vibration damping performance.Real vehicle experiment and random inputting of ride comfort on running was carried out.The vibration frequency and vibration acceleration amplitude are analyzed from the cabin seat convey to the body in the case of different drug loading.The test make a effective evaluation,which is the influence of the spray machine vibration on the driver and the liquid and make a objective evaluation for ride comfort of the test vehicle.In the oil-gas suspension system test,compared to the frame of acceleration root-mean-square value before and after the certain conditions change in the case of different load and speed,different road surfaces cases,all other things being equal.The performance of the oil-gas suspension are analysed and contrasted in different conditions.