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鞍山科技大學本科生畢業(yè)設計 第IV頁
1.5兆牛擺動剪切機構設計
摘要
1.5兆牛擺動剪切機是安裝在500型鋼熱連機前，用于切頭切尾和卡鋼事故的處理剪。隨著國民經(jīng)濟的發(fā)展，對型鋼產(chǎn)品數(shù)量的要求更高。本設計為型鋼設計切頭的擺動剪，設計中對擺動剪的局部做了改進。
首先，本文討論了型鋼軋機在國民經(jīng)濟中的地位，并對300/500機組平面布置示意圖的概況進行了整體的介紹。并介紹了擺動剪的結構特點和研究的內(nèi)容與方法。根據(jù)現(xiàn)有設備狀況，對設備生產(chǎn)中存在的問題進行分析，對主要部件結構做了合理的選用。然后，根據(jù)機組原始參數(shù)初選主電機容量，對其進行發(fā)熱校核和過載校核，對主要零件進行強度校核。對齒輪做了強度計算，對曲軸計算了彎曲應力，彎扭合成應力；校核了危險斷面；以及滑塊損壞的改進設計及潤滑方法，簡單計算擺動剪的可靠性和經(jīng)濟評價。
通過以上工作，1.5兆牛擺動剪切機在使用壽命、產(chǎn)品質(zhì)量理論上應該有一定的提高。設計內(nèi)容有實際價值。該剪作為加熱爐前方坯切頭飛剪。
關鍵詞：剪切機，擺動，主傳動
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