本文選題：電磁執(zhí)行機(jī)構(gòu) + 鮮棗��； 參考：《寧夏大學(xué)》2017年碩士論文

【摘要】：為了提高紅棗分級(jí)機(jī)的分級(jí)精度和分級(jí)速度,在第二代(氣動(dòng)式)紅棗分級(jí)分選機(jī)的基礎(chǔ)上研制第三代紅棗分級(jí)機(jī)。第三代紅棗分級(jí)機(jī)依據(jù)紅棗的外部綜合品質(zhì)(大小、顏色、形狀、蟲眼等)指標(biāo)作為分級(jí)標(biāo)準(zhǔn),實(shí)現(xiàn)紅棗的快速無損檢測(cè)分級(jí)。本文研究設(shè)計(jì)了電磁式高速執(zhí)行機(jī)構(gòu)的紅棗分級(jí)機(jī),整機(jī)由定向排布上果系統(tǒng)、圖像處理系統(tǒng)及執(zhí)行機(jī)構(gòu)組成,執(zhí)行機(jī)構(gòu)又由同步傳動(dòng)鏈輪、撥板鏈條、分級(jí)單元、電磁鐵組成。接近開關(guān)控制相機(jī)采集棗果的圖像數(shù)據(jù),圖像數(shù)據(jù)經(jīng)STM32F407圖像處理器處理并將處理后的信息傳遞給STM32F103協(xié)處理器,STM32F103協(xié)處理器控制分級(jí)執(zhí)行機(jī)構(gòu)產(chǎn)生分級(jí)動(dòng)作。分級(jí)單元與輥輪輸送同步,采用靈敏度高的電磁鐵吸附扣板開關(guān)執(zhí)行動(dòng)作。本文主要研究了以下幾方面的內(nèi)容:①第三代紅棗分級(jí)機(jī)分級(jí)執(zhí)行機(jī)構(gòu)的整體優(yōu)化。主要講述了分級(jí)機(jī)整體優(yōu)化原則與方案,闡述了第三代分級(jí)機(jī)的整機(jī)工作原理,著重介紹了分級(jí)執(zhí)行機(jī)構(gòu)的工作原理。對(duì)分級(jí)執(zhí)行機(jī)構(gòu)各部件進(jìn)行了簡(jiǎn)單的介紹。②優(yōu)化了分級(jí)執(zhí)行機(jī)構(gòu)之間的配合。經(jīng)試驗(yàn)確定了底板、撥板和扣板之間是通過軸鏈接的;通過計(jì)算確定了底板、撥板扣板的尺寸;根據(jù)磁滯回線確定了扣板中的導(dǎo)磁材料為硅鋼片;設(shè)計(jì)了撥板限位裝置(角度及尺寸);掛拉簧裝置設(shè)計(jì)為“牛角”狀;確定了拉簧的長(zhǎng)度。③電磁鐵的選型及安裝位置的確定。根據(jù)棗果的分級(jí)等級(jí),確定了電磁鐵總數(shù);通過理論計(jì)算確定了電磁鐵外形尺寸,磁力大小,及安裝位置;根據(jù)直流電磁鐵的的穩(wěn)定性高的優(yōu)點(diǎn),選擇了直流電磁鐵。④歸位裝置及保護(hù)開關(guān)的設(shè)計(jì)。硬性歸位裝置對(duì)撥板的歸位效果差,對(duì)撥板易造成了傷害,因此設(shè)計(jì)了歸位輪,其效果顯著,避免了硬性歸位裝置對(duì)撥板的損害,;因?yàn)閾馨宓倪\(yùn)動(dòng)軌跡為圓的漸開線,所以歸位輪的外邊緣也設(shè)計(jì)成圓的漸開線。為了防止撥板不能正常歸位設(shè)計(jì)了保護(hù)開關(guān)避免撥板受到損壞。⑤設(shè)備的可靠性試驗(yàn)及分級(jí)速度的測(cè)定。經(jīng)過測(cè)定紅棗分級(jí)速度達(dá)到20個(gè)/s,最大產(chǎn)能1000kg/h,較第二代紅棗分級(jí)機(jī)分級(jí)速度提高了一倍;實(shí)現(xiàn)紅棗3個(gè)大小等級(jí)和1個(gè)綠色等級(jí)的分級(jí),分級(jí)準(zhǔn)確率為93.7%,無損率為100%,疲勞性試驗(yàn)結(jié)果良好,未發(fā)生異�，F(xiàn)象。
[Abstract]:Red dates in order to improve the classifier classification precision and speed in the second generation (pneumatic) based red dates sorting machine developed on the third generation of red dates. The comprehensive quality of the third generation of external classifier classifier based on the red dates red dates (size, color, shape, bug and other indicators) as the classification standard, classification to achieve rapid and nondestructive detection of red dates the classifier is designed in this paper. Red dates high-speed electromagnetic actuator, the machine by the directional arrangement consisting of fruit system, image processing system and the implementing agencies, implementing agencies and by the synchronous drive sprocket, chain plate, grading unit, an electromagnet. The proximity switch control camera image data acquisition jujube, image data by STM32F407 image processor and transfer the processed information to the STM32F103 coprocessor, STM32F103 co processor control the grading machine from grading unit level action. Conveying synchronization to the roller, the plate high sensitivity switch electromagnet adsorption action. This paper mainly studies the following aspects: the overall optimization of third generation of red dates grading actuator. Mainly describes the overall optimization principle and scheme of classifier, expounds the working principle of the third generation classifier, emphatically introduces the working principle of the grading machine. Each component of the grading machine were introduced. The optimum matching between the grading machine. The floor, between the plate and gusset plate through the shaft link; the floor was determined by calculation, dialing plate size; according to the hysteresis loop of magnetic material in plate to determine the design of silicon steel sheet; dialing limiting device (angle and size); the spring hanging device is designed as a "horn" shape; the length of the spring. The electromagnet Selection and determination of installation position. According to the classification of jujube fruit, the total number of the electromagnet; the electromagnet dimensions, through the theoretical calculation of magnetic size and installation position; according to the advantages of high stability DC electromagnet, DC electromagnet. The choice of homing device and protection switch design. The rigid homing device dial plate homing effect is poor, easy to dial plate damage, so the design of homing wheel, the effect is obvious, to avoid the hard device on the dial plate homing trajectory; damage, because of the shifting plate for involute of circle, so the outer edge of homing wheel is designed into circular involute. In order to prevent. In normal homing designed protection switch to avoid dialing damage. Determination of reliability test and the classification speed of equipment. After determination of red dates grading speed reached 20 /s, the maximum capacity is second 1000kg/h. The grading speed of the jujube grader doubled, and the grading of 3 sizes and 1 green grades of jujube was achieved. The accuracy of classification was 93.7%, and the nondestructive rate was 100%. The fatigue test results were good, and no abnormal phenomena occurred.

【學(xué)位授予單位】：寧夏大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：S226.5

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本文編號(hào)：1732989