| At present,the intelligent seedling raising of economic tree species plays a more and more important role in forestry production.Seedling raising containers are used in the seedling raising stage of main afforestation economic tree species in our province,such as pecan,Torreya grandis,Camptotheca acuminata and camphor camphora.During soil loading and sowing,the soil loading stage is time-consuming and laborious,affecting the seedling raising efficiency.Seedlings are cultivated through traditional containers,and most of the cultivated seedlings have nest roots,partial roots Poor root nutrition such as sparse roots and weak roots,so it has become a trend to raise seedlings in forest non-woven fabric seedling bags.However,at present,the transplanting process from primary non-woven fabric seedling bags to secondary non-woven fabric seedling bags completely depends on labor,with low cost and high efficiency,which is not conducive to improving the mechanization of seedling raising.Therefore,aiming at this problem,this paper develops a transplanting machine between seedlings in large and small containers of forest non-woven fabric,The prototype design process is introduced in detail and analyzed in combination with relevant tests:(1)Through the research on non-woven seedling raising machines at home and abroad,combined with the non-woven seedling bag seedling raising method of Lin’an pecan,the operation scheme of automatic seedling raising assembly line is put forward.The implementation method of supporting scheme is given.Then the main structure and key dimensions of secondary transplanting of non-woven seedling bags were determined.(2)Combined with the actual demand and relevant dimensions,this paper puts forward the assumption of the large and small container seedling machine of forest non-woven fabric,designs the preliminary prototype,makes in-depth research on the prototype,finally determines the design model of the actual prototype,carries out modeling and analysis,and determines the design of the mechanical structure of the whole machine.(3)According to the seedling raising requirements of the secondary transplanting operation,based on the PLC control system,the whole machine is controlled through multiple electronic components such as motor and cylinder,the hardware selection and software programming of the machine control system are completed,the control system is added on the basis of the mechanical structure,and the software debugging is completed through PLC simulation.(4)Complete the processing and manufacturing of parts,build a prototype,and test the prototype.The test results show that the prototype can meet the automatic transplanting process between seedlings of large and small containers of forest non-woven fabric,and can operate for a long time.The machine is easy to operate and use,and the operation is stable and reliable.The automatic transplanting machine of non-woven fabric container seedlings in this subject basically meets the design requirements,can realize the automatic transplanting operation between forest non-woven fabric container seedlings,and realize the mechanization of secondary transplanting.At the same time,aiming at the existing problems of the machine,the solution is given.In short,the research and development of the machine fills the gap in the secondary transplanting machine of non-woven seedling raising in China,and is of great significance to improve the mechanized cultivation of forest seedling raising in China. |
