Design Of Electric Self-propelled Double Track Transporter

The terrain of the hilly orchards in China is complex and rugged.Conventional wheel and track transportation methods cannot solve the problems of high labor intensity and high labor costs during fertilization and harvesting.How to improve the transport capacity in orchards is an urgent problem to be solved.At present,orchard transportation mainly includes ropeway transportation,rail transportation and wheeled or tracked transportation.Planned lands for planting can use conventional wheel conveyors and track conveyors.This mode of transport is generally applicable to large areas of plains.In the rugged hills and mountains,wheeled and tracked transport cannot be performed,and it is only possible to rely on the original manpower.At present,most young people in rural areas work outside the home,leaving only old and young to stay in the rural areas,the labor shortage is serious,and the labor cost is high,which directly hinders the development of agriculture.The ropeway transportation method is time-consuming and has a relatively small capacity,and is only applicable to very steep mountains.Therefore,whether it is in the cost of investment,operating efficiency,or electric energy-saving environmental protection,the rail transport mode is the most suitable for the transport of goods on hillside and hilly areas.In view of these problems in the process of agricultural mechanization in China,it is of great significance to study the electric self-propelled double-track transport aircraft.The rail transport machine studied in this paper is specifically designed for agricultural transportation machinery with complex terrain and slightly larger slopes.The track conveyor can not only be used for picking fruits,but also can transport pesticides,fertilizers and seedlings.In this paper,the electric self-propelled double-track transporter is selected as the research object.Based on summarizing and comparing the performance parameters of other singletrack and double-track transport aircrafts,an electric self-propelled double-track transport aircraft is developed,and the theoretical design goal and general layout design plan of the transport aircraft are described.Drive system,brake system and travel mechanism design.The research method is to design the transport system,transmission system,traveling system,braking system,electric control system,frame and track of the transporter first according to the mechanical theory.Second,the computer software Solidworks was used to establish transport model,ADAMS was introduced for dynamic analysis,and ANSYS was used to analyze the stress and deformation of the dual-track orbit under different working conditions.The safety factor of the track was calculated and the stiffness and strength of the dual-track track were analyzed.Finally set up a test platform to carry out relevant tests.The tests mainly include speed test,energy consumption test,maximum grade test,parking brake test and rollover test.Two sets of experiments were used for running speed and energy consumption.Each set of experiments was conducted under five different loads and the data was fitted with curve analysis.At the same time,it verifies the maximum climbing ability,rollover prevention ability and half-slope parking brake capability of the transporter.The main research conclusions are as follows: The battery used in the electric selfpropelled double-track transporter is a lithium iron phosphate battery.The motor model is Santo GW114165.The transmission system adopts a worm gear and a specially designed brake parking system to ensure the safety of the transport aircraft.After software analysis,the stiffness and strength of the track meet the requirements,and the safety factor also meets the requirements.The transporter can achieve forward,backward,stop and any point of parking,etc.,with good parking performance on half slope,good rollover prevention,and the maximum test climbing angle is about 25.03°.This transporter is suitable for transporting fruits and fertilizers in orchards in hilly and mountainous regions and is a practical equipment for agricultural mechanization.