Design And Test Of Remote Control Spray

Wheat growth process,plant diseases and insect pests prevention is an important link,its control effect is good or bad not only directly related to the production of wheat,and pesticide residues may also affect the wheat grain safe to eat.Wheat plant protection machinery of spray on the market at present,there are almost all rear wheel drive to the separation of power distribution is not balanced,the man-machine not cause poisoning,the operator at the same time,the energy crisis increasingly prominent.Aiming at these problems,according to the actual situation of our country agriculture development,urgent need to develop a remote controlled spracy machine in the mid to late wheat plant protection work.This article main research content is as follows:(1)through force analysis of four-wheel drive self-propelled spray,mainly analyzing the rolling resistance of resistance,air resistance and acceleration resistance and ramp,then introduces the theoretical research on wheel hub motor power and torque,followed by a study on the performance of the vehicle,mainly studies the vehicle turning ability,gradeability and battery life,through the above research results to be prepared for the vehicle design and type selection.(2)according to the vehicle overall design requirements,determine the basic working principle and the vehicle’s steering system,control system,monitoring system,such as design,around the system design scheme of the system need to use hub motor,stepping motor,power lithium batteries and other components for selection,finally,four-wheel drive self-propelled sprayer has carried on the overall 3d model design,3 d model including frame design,selection of parts reverse 3 d model design and 3 d model design of the machine.(3)by ADAMS simulation software frame finite element analysis of the whole machine,mainly the result of the modal analysis of the vehicle frame and frame mechanics analysis,through the simulation analysis results concluded that the frame of the first order frequency of 10.55 Hz,the formation is difficuit to swing,the design of the frame will not cause the whole of the whole machine resonance;The maximum stress value of the vehicle frame is 136.99 Mpa,is far less than frame using the material yield limit,maximum stress appears in the installation of horizontal gasolineengine support position,maximum deformation of the frame is 2.22 mm,appear on the tail of truss.Then carries on the kinematics simulation’s turn on the machine and climbing,through the simulation analysis results under the working condition of the vehicle in the clay ground turning radius of about 1.9 m;The machine under 30 °slope can climb up hill,at 30 ° to 40 ° slope grudgingly uphill,the maximum climbing Angle of 40 °.(4)according to the 3 d model of the machine design and finite element simulation analysis result,to manufacture of four-wheel drive self-propelled sprayer,according to the frame of the trial production and trial production of steering system,steering system of manufacture,power system and spray system of qualification test of an orderly.After completion of the whole machine manufacture,for the machine,the obstacles to experiment and wheat field spray experiment,the experimental results show that the vehicle,the minimum turning radius of 2.1 m,the largest for 42 °climbing Angle,the machine in the wheat field experiments provides,driving stability,spray power plant protection effect is good,etc can meet the practical requirements.