本文選題：塑料粉碎機(jī) + 刀架軸�。� 參考：《江西理工大學(xué)》2015年碩士論文

【摘要】：社會(huì)經(jīng)濟(jì)的發(fā)展推動(dòng)了各行各業(yè)的飛速發(fā)展,社會(huì)資源日趨枯竭,尋求新材料、新技術(shù)已成為社會(huì)的共同目標(biāo)。近年來,由于先進(jìn)制造技術(shù)在社會(huì)生產(chǎn)中的運(yùn)用,使得“以塑代鋼,以塑代木”成為現(xiàn)實(shí),隨之帶來了巨大的塑料垃圾,造成環(huán)境污染,同時(shí)也造成了社會(huì)資源的嚴(yán)重浪費(fèi)。塑料的破碎是塑料回收、再利用中的重要環(huán)節(jié)之一,而塑料粉碎機(jī)是塑料破碎的必要設(shè)備。目前,塑料粉碎機(jī)粉碎效率低、刀架軸易斷成為制約塑料粉碎回收利用的主要障礙。本文針對(duì)上述問題,并在已有產(chǎn)品SG-4360型塑料粉碎機(jī)的基礎(chǔ)上,設(shè)計(jì)了一款新型片刀式塑料粉碎機(jī)。本文的主要研究工作如下:(1)結(jié)合粉碎機(jī)的現(xiàn)有結(jié)構(gòu)及粉碎機(jī)的設(shè)計(jì)要求,對(duì)塑料粉碎機(jī)進(jìn)行了整體布局設(shè)計(jì),并對(duì)粉碎機(jī)的主要部件進(jìn)行結(jié)構(gòu)設(shè)計(jì)及校核計(jì)算;針對(duì)粉碎機(jī)的工作狀態(tài),提出一種變頻結(jié)構(gòu)設(shè)計(jì)方案,實(shí)現(xiàn)降低粉碎機(jī)無用功輸出及社會(huì)能源浪費(fèi)的目的;(2)通過對(duì)設(shè)計(jì)的六刀架軸進(jìn)行ANSYS靜力學(xué)及模態(tài)分析,結(jié)果顯示,其在工作范圍內(nèi)不會(huì)出現(xiàn)共振現(xiàn)象,但存在局部應(yīng)力集中及布局應(yīng)變較大現(xiàn)象,研究了六刀架式刀架軸斷裂的原因及存在的主要問題;(3)對(duì)六刀架式刀架軸進(jìn)行結(jié)構(gòu)改進(jìn),并對(duì)改進(jìn)后的刀架軸進(jìn)行有限元靜力學(xué)分析、模態(tài)分析、動(dòng)態(tài)特性實(shí)驗(yàn)及動(dòng)平衡測(cè)試,分析得出,改進(jìn)后刀架軸消除了局部應(yīng)力集中及局部應(yīng)變較大的問題,且改進(jìn)后刀架軸ANSYS分析與實(shí)驗(yàn)得到的刀架軸振型及固有頻率間誤差在4.5%以內(nèi),改進(jìn)后刀架軸動(dòng)平衡度達(dá)到95%以上,動(dòng)態(tài)性能良好;分析V型刀具的受力情況,對(duì)刀具進(jìn)行了靜力學(xué)分析,分析結(jié)果顯示刀具設(shè)計(jì)結(jié)構(gòu)滿足使用要求;(4)試制樣機(jī),采用隔音棉降噪,并對(duì)樣機(jī)噪聲評(píng)估,進(jìn)行了噪聲測(cè)試實(shí)驗(yàn),結(jié)果顯示,樣機(jī)噪聲大小符合國(guó)家機(jī)器設(shè)備噪聲指標(biāo)要求;(5)為避免塑料粉塵對(duì)環(huán)境的污染及對(duì)工作人員身體的傷害,對(duì)現(xiàn)有除塵裝置進(jìn)行改進(jìn),設(shè)計(jì)了一款二級(jí)旋風(fēng)除塵系統(tǒng),可進(jìn)行二次除塵,除塵率達(dá)到97%以上,除塵更徹底,除塵效率更高。
[Abstract]:The development of social economy has promoted the rapid development of various industries, and the social resources have been increasingly depleted, seeking new materials and new technologies has become the common goal of the society. In recent years, due to the application of advanced manufacturing technology in social production, "plastic substitute for steel, plastic for wood" has become a reality, which has brought huge plastic garbage, resulting in environmental pollution, but also caused a serious waste of social resources. The crushing of plastics is one of the most important steps in the recovery and reuse of plastics, and the plastic crusher is the necessary equipment for the crushing of plastics. At present, the grinding efficiency of plastic grinder is low and the cutter shaft is easy to break. In order to solve the above problems, and on the basis of the existing SG-4360 plastic pulverizer, a new type of blade plastic pulverizer is designed in this paper. The main research work of this paper is as follows: (1) combined with the existing structure of the pulverizer and the design requirements of the pulverizer, the overall layout design of the plastic pulverizer is carried out, and the structural design and checking calculation of the main parts of the pulverizer are carried out. In view of the working state of the pulverizer, a design scheme of frequency conversion structure is put forward, which can reduce the useless output of pulverizer and the waste of energy in society. Through the ANSYS statics and modal analysis of the designed six-tool holder shaft, the result shows that, There is no resonance phenomenon in the range of work, but there exists the phenomenon of local stress concentration and larger distribution and strain. The reason and main problem of the fracture of the six-blade frame tool holder shaft are studied in this paper, and the structure of the six-knife frame tool holder shaft is improved. Finite element static analysis, modal analysis, dynamic characteristic experiment and dynamic balance test of the improved tool holder shaft are carried out. It is concluded that the improved tool holder shaft eliminates the problems of local stress concentration and large local strain. The error between vibration and natural frequency of the tool holder shaft obtained by the improved ANSYS analysis and experiment is less than 4.5%, the dynamic balance of the improved tool holder shaft is more than 95%, and the dynamic performance of the improved tool holder shaft is good. The statics analysis of the tool shows that the design structure of the tool meets the requirement of application. The prototype is trial-produced, and the noise is reduced by using soundproof cotton. The noise of the prototype is evaluated, and the noise test results show that, In order to avoid the pollution of plastic dust to the environment and harm to the workers, the existing dust removal device was improved, and a two-stage cyclone dust removal system was designed. Secondary dust removal can be carried out, the dust removal rate is over 97%, the dust removal is more thorough and the dust removal efficiency is higher.
【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ051.91

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1 于志恒;SG-4390型塑料粉碎機(jī)的設(shè)計(jì)與開發(fā)[D];江西理工大學(xué);2015年

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本文編號(hào)：1945589