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鞍山科技大學(xué)本科生畢業(yè)設(shè)計(jì) 第IV頁
1.5兆牛擺動(dòng)剪切機(jī)構(gòu)設(shè)計(jì)
摘要
1.5兆牛擺動(dòng)剪切機(jī)是安裝在500型鋼熱連機(jī)前，用于切頭切尾和卡鋼事故的處理剪。隨著國民經(jīng)濟(jì)的發(fā)展，對(duì)型鋼產(chǎn)品數(shù)量的要求更高。本設(shè)計(jì)為型鋼設(shè)計(jì)切頭的擺動(dòng)剪，設(shè)計(jì)中對(duì)擺動(dòng)剪的局部做了改進(jìn)。
首先，本文討論了型鋼軋機(jī)在國民經(jīng)濟(jì)中的地位，并對(duì)300/500機(jī)組平面布置示意圖的概況進(jìn)行了整體的介紹。并介紹了擺動(dòng)剪的結(jié)構(gòu)特點(diǎn)和研究的內(nèi)容與方法。根據(jù)現(xiàn)有設(shè)備狀況，對(duì)設(shè)備生產(chǎn)中存在的問題進(jìn)行分析，對(duì)主要部件結(jié)構(gòu)做了合理的選用。然后，根據(jù)機(jī)組原始參數(shù)初選主電機(jī)容量，對(duì)其進(jìn)行發(fā)熱校核和過載校核，對(duì)主要零件進(jìn)行強(qiáng)度校核。對(duì)齒輪做了強(qiáng)度計(jì)算，對(duì)曲軸計(jì)算了彎曲應(yīng)力，彎扭合成應(yīng)力；校核了危險(xiǎn)斷面；以及滑塊損壞的改進(jìn)設(shè)計(jì)及潤滑方法，簡單計(jì)算擺動(dòng)剪的可靠性和經(jīng)濟(jì)評(píng)價(jià)。
通過以上工作，1.5兆牛擺動(dòng)剪切機(jī)在使用壽命、產(chǎn)品質(zhì)量理論上應(yīng)該有一定的提高。設(shè)計(jì)內(nèi)容有實(shí)際價(jià)值。該剪作為加熱爐前方坯切頭飛剪。
關(guān)鍵詞：剪切機(jī)，擺動(dòng)，主傳動(dòng)
A Design of 1.5 Swing Scissors
1.5 swing scissors is installed before the 500 sharp steel of hot continuous rolling mills, which is used to cut the head and end of the steel and deal with the jamming of the steels.With the development of the national economy, the request of the sharp steels’s quality is higher than before. In the thesis, the cutting of the head of the 1.5 swing scissors is researched, and makes some improvments of partial strcture.
First, the thesis has discussed the position of the rolling mill of sharp steel in the national economy, and makes the general instruction for 300/500 unit plane arrangement. Next, introducing the structural characteristic of the swing cutting and the method and content of the research .According to exising equipment condition, analysing the exist problem in equipment production, the strcture of the major parts are reasonable to choosed. Then,according to the primitive parameter of the unit, I primarily choose the capacity of the main motor, and make the heat examination and overload examination, choose if satisfying the requirement, otherwise choose again until the examination is satisfyed. I make the strength examination for major element. As to gears, I make the strength calulation; as to crank, I caculated the curving stress and the crooked synthesis stress, examinationing the dangerous cross section, as well as the improment of the damages of the slide and the method of lubrication. Finally I caculated the economy appraisal and the reliablity of swing scissors.
Through the work of this thesis, 1.5 swing scissors should certain raise in service life and product quality theoretically, but need the unceasing improvement in practice.
Key-word: scissors, swing, main drive