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南昌航空大學(xué)科技學(xué)院學(xué)士學(xué)位論文
自落式混凝土攪拌混合機(jī)的設(shè)計(jì)研究
學(xué)生姓名：鐘武 班級(jí)：078105133
指導(dǎo)老師：張緒坤
摘要：最近幾年，建筑行業(yè)蓬勃發(fā)展。而在建筑機(jī)械里，混凝土攪拌機(jī)械是其中的基本設(shè)備之一。攪拌的混凝土關(guān)系到建筑的質(zhì)量，而過(guò)去的機(jī)型如鼓筒型混凝土攪拌機(jī)存在許多問(wèn)題如攪拌質(zhì)量差、時(shí)間長(zhǎng)、能耗高。自落式混凝土攪拌機(jī)尤其是其中之一的錐形反轉(zhuǎn)出料攪拌機(jī)能更好的解決上述問(wèn)題。
本文通過(guò)綜合優(yōu)化設(shè)計(jì)和類比的方法，結(jié)合以往的參數(shù)、數(shù)據(jù)和給出的原始資料、技術(shù)要求，對(duì)自落式混凝土攪拌機(jī)進(jìn)行了設(shè)計(jì)。利用攪拌筒直徑d=1560mm和其他條件，計(jì)算出攪拌筒的轉(zhuǎn)速n=18r/min。根據(jù)原始數(shù)據(jù)——分批混合：1000kg/批、攪拌筒厚度h=4mm、裝機(jī)容量：7.5千瓦、生產(chǎn)率：8-10噸/時(shí)等條件，計(jì)算出攪拌筒和混合料、支撐滾輪間相互作用的總力矩M，傳動(dòng)裝置的總效率=0.89，從而得出減速電機(jī)額定功率=7.5kw，減速比i=23，轉(zhuǎn)速n=1500r/min。考慮攪拌機(jī)傳動(dòng)系統(tǒng)的要求，對(duì)托滾軸和減速電機(jī)之間采用鏈傳動(dòng)的連接方式，鏈傳動(dòng)比i=1.19，小鏈輪齒數(shù)Z=17，從動(dòng)鏈輪齒數(shù)Z=20，鏈長(zhǎng)L=2.5146mm,中心距a=1020.5mm。再確定要安裝鏈輪和拖輪的托滾軸，材料為45#，調(diào)質(zhì)處理，軸的最小處直徑d=69mm。根據(jù)材料和載荷，設(shè)計(jì)出托滾軸的各段的長(zhǎng)度和直徑，最后進(jìn)行校核驗(yàn)證。
關(guān)鍵詞：減速電機(jī) 混合單元摩擦傳動(dòng) 托滾軸設(shè)計(jì) 鏈傳動(dòng)
指導(dǎo)老師簽名：
gravity type concrete mixing mixer design
Student name: ZhongWu Class: 078105133
Supervisor:Zhang Xukung
Abstract: In recent years, the construction industry develops rapidly. In the construction machinery, the concrete mixing machine is one of the basic equipment. The mixing concrete related to the quality of construction, but the past models such as the type of drums concrete mixer has many problem such as poor mixing quality, long duration and high energy consumption. The gravity type concrete mixing mixer especially one of these： cone reversal discharging mixer can solve the above problem for the better.
Considering the previous parameters,data and original data,technical requirements which has given,this papers design the gravity type concrete mixing mixer taking the methods of integrated optimal design and analog. Using the mixing tube diameter d = 1560mm and other conditions to calculate the speed of mixing tube n = 18r/min. According to the original data - batch mixed: 1000kg / batches, the mixing tube thickness h = 4mm, capacity: 7.5 kW, 8-productivity of 10 tons / h and other conditions, to calculate the total moment M between mixing tube and mixture as well as interaction support rollers, the overall efficiency of gear=0.89, so as to receive the gear motor rated power=7.5kw, reduction ratio i = 23, rotational speed n = 1500r/min. Considering the request of the mixer drive system， the placement between the care roller and the gear motor is connected by chain drive ，chain drive ratio i = 1.19, the small sprocket number of teeth Z = 17, and the driven sprocket number of teeth Z = 20, chain length L = 2.5146mm, center distance a = 1020.5mm. Next,confirming the care roller which demand installing the chain wheel and tug ，to determine its material is 45#、quenching and tempering, the minimum diameter of shaft is d = 69mm. According to the material and the loading, we design the roller care of all of the length and diameter , and check verification finally.
Key words: Geared Motor Mixed friction drive unit Care roller design Chain drive
Signature of Supervisor: