| The crayfish commonly known in my country,the scientific name Procambarus clarkii,is a kind of crustacean that grows in fresh water.It is loved by people because of its delicious taste.Since Japan introduced crayfish to my country in the 1830 s,people’s demand for crayfish has been increasing.However,until now,my country’s crayfish processing mainly relies on manual processing by workers.Faced with such a huge processing volume,it is urgent to implement mechanized production.In order to solve the above problems,this paper studies the key technology of a multifunctional crayfish processing device design scheme.First of all,the crayfish was subjected to an experimental study of straight cutting and removing the head and spinning the shrimp thread.The straight cutting and head removal experiment was carried out using the texture analyzer,and the stress-strain curve of crayfish cutting was obtained.The experimental results show that the maximum shear stress is about 80 N,which occurs at about 2/3 of the cracking degree of the shrimp shell,and the average maximum shear stress is about 67.5N.An electronic universal testing machine was used to carry out an experimental study of the shrimp thread.The experimental results show that the breaking force at a tensile speed of 6mm/s is greater than the breaking force at 3mm/s.The size of the breaking force directly affects the quality of the extracted shrimp thread.If the breaking force is too large,more shrimp will be pulled out,and it may cause the shrimp thread to break before it is completely pulled out.Secondly,on the basis of the above experiments,the three crayfish processing plans were compared and analyzed,and the final processing plan was determined and the plan was designed.This program integrates clamping,opening back,head removal,intestine pulling,and belly brushing.It is a new type of multifunctional crayfish processing device.The main execution system,transmission system and power system of the device are designed.Finally,the three key components of the machine: frame structure design,motor base structure design and cylinder support structure design and finite element simulation.After the preliminary structure design,the finite element analysis software ANSYS was used to carry out the strength simulation,and based on the light-weight principle,the structure was improved and simulated many times,and finally the optimized design results of each structure were given.This research takes the urgently-needed crayfish processing device on the market as the object,and uses literature research,experimental research and simulation research to design a new type of multifunctional crayfish processing device on this basis.Analysis and simulation show that the scheme is simple and efficient,and provides a new idea for the rapid development of crayfish processing mechanization. |
