發(fā)布時間：2018-04-26 20:11

  本文選題：雞腸 + 剖切��； 參考：《山東農(nóng)業(yè)大學》2017年碩士論文

【摘要】：本文在研究了雞、鴨腸幾何特征參數(shù)和相關力學特性的基礎上,設計并試制了一種針對雞、鴨腸進行自動剖切清洗的小型裝置,該裝置利用變頻技術,可適應不同作業(yè)速度的剖切,調(diào)速方便,裝置總體尺寸小,生產(chǎn)成本低。既能適應單機作業(yè),又能適應小規(guī)模生產(chǎn)的要求,也能以規(guī)�；a(chǎn)的前處理工序為依托,作為腸體的后處理設備,以滿足流水化作業(yè)要求。在查閱了大量資料,了解了雞、鴨腸組織結(jié)構(gòu)特點的基礎上,對屠宰加工車間中,分腺胃后的雞腸腸體的外觀幾何特征進行了測量;在自制夾具的基礎上,利用WDW-5E微機控制電子式萬能實驗機,以5 mm/min的速度,對雞腸的極限抗剪切力進行了測量;以實際測量值為依據(jù)并結(jié)合生產(chǎn)實際,對腸體輸送模塊、剖切模塊等進行了理論分析和計算,實現(xiàn)了剖腸裝置的理論化、參數(shù)化設計;按照經(jīng)驗數(shù)值和設計尺寸,對裝置進行了三維實體建模和虛擬樣機的裝配,進行了干涉檢查和整機的評估。運用SolidWorks中的simulation模塊和NX8.5中的FEM高級仿真模塊,對腸體夾緊鏈節(jié)進行了結(jié)構(gòu)靜力學分析及評估,得出了鏈節(jié)受力后的應力集中區(qū)域和節(jié)點位移趨勢。根據(jù)夾緊鏈節(jié)夾持時腸體的形狀,建立腸體模型,并對其進行了靜力學仿真分析,根據(jù)有限元解算的結(jié)果及分析表明:鏈節(jié)邊緣及導槽邊緣存在的應力集中是腸體擠壓印痕產(chǎn)生的主要原因,這為鏈節(jié)結(jié)構(gòu)的改進和優(yōu)化指明了方向。結(jié)合生產(chǎn)實際和FEM分析結(jié)果,通過改變導槽位置、增大邊緣過渡圓角以及調(diào)整滾輪位置,可有效減少印痕的產(chǎn)生,提高了產(chǎn)品的品質(zhì)。鏈節(jié)結(jié)構(gòu)改進后效果明顯,將間距調(diào)節(jié)擋板改成滾輪形式,減小了鏈節(jié)的磨損,優(yōu)化了速度的調(diào)節(jié)與控制。對傳動系統(tǒng)中,多軸鏈傳動進行了設計和理論計算,并按照鏈輪小包角條件,驗證了不需加裝惰輪,可以實現(xiàn)無跳齒和連續(xù)嚙合傳動。樣機實驗表明:在兩個剖切系統(tǒng)下,線速度與理論值0.4 m/s接近時,每小時可加工約2000條雞腸腸體,若通過變頻器調(diào)速,可適當提高加工效率。腸體剖切率在93%以上,可滿足使用要求。
[Abstract]:Based on the study of geometric parameters and related mechanical properties of chicken and duck intestines, a small device for automatic cutting and cleaning of chicken and duck sausage was designed and trial-manufactured. The device uses frequency conversion technology. It is suitable for cutting at different operating speed, convenient speed regulation, small overall size and low production cost. It can be used not only for single machine operation, but also for small-scale production. It can also be used as the reprocessing equipment of enteric body to meet the requirement of running water operation based on the pre-treatment process of large-scale production. On the basis of consulting a large amount of data and understanding the characteristics of the tissue structure of chicken and duck intestines, the appearance and geometric characteristics of chicken intestines after being divided into glands and stomach in slaughtering and processing workshop were measured, and on the basis of self-made jigs, The ultimate shear resistance of chicken sausage was measured with WDW-5E microcomputer controlled electronic universal experimental machine at a speed of 5 mm/min. The theoretical analysis and calculation of the cutting module are carried out to realize the theoretical and parameterized design of the sausage device, and the 3D solid modeling and virtual prototype assembly are carried out according to the empirical value and the design size. Interference inspection and evaluation of the whole machine were carried out. Using the simulation module in SolidWorks and the FEM advanced simulation module in NX8.5, the statics analysis and evaluation of the intestinal clamping chain joint are carried out, and the stress concentration area and the displacement trend of the joint are obtained. According to the shape of the intestinal body during clamping, the model of intestinal body was established and analyzed by static simulation. According to the results and analysis of finite element method, it is shown that the stress concentration at the edge of the chain joint and the edge of the guide groove is the main cause of the indentation of the indentation of the intestinal body, which indicates the direction for the improvement and optimization of the structure of the chain joint. Combined with the actual production and FEM analysis results, by changing the slot position, increasing the edge transition angle and adjusting the roller position, the printing mark can be effectively reduced and the quality of the product can be improved. The effect of the chain joint structure improvement is obvious. The pitch adjusting baffle is changed into the roller form, the wear of the chain joint is reduced, and the adjustment and control of the speed are optimized. The design and theoretical calculation of multi-axis chain drive are carried out. According to the condition of small packet angle of sprocket, it is verified that there is no need to install idler wheel, which can realize no gear jump and continuous meshing transmission. The prototype experiment shows that when the linear velocity is close to the theoretical value of 0.4 m / s, about 2000 chicken intestines can be processed per hour under two cutting systems. If the speed is adjusted by frequency converter, the processing efficiency can be improved appropriately. The rate of intestinal dissection was more than 93%, which could meet the requirement of application.
【學位授予單位】：山東農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TS251.3

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本文編號：1807481