950熱軋帶鋼生產(chǎn)線卷取機設(shè)備能力校核及部件設(shè)計（本科畢業(yè)論文設(shè)計）

摘    要

地下卷取機是卷取帶鋼的重要設(shè)備，其用途是吧軋制后的成品熱軋帶鋼卷成鋼卷。該設(shè)備廣泛應(yīng)用在帶鋼熱連軋線、薄板坯連鑄連扎線和中板坯連鑄連扎線。
現(xiàn)今我國各大鋼鐵企業(yè)所使用的地下卷取機都是從國外進口，由于該設(shè)備的使用即改造具有很大的緊急效益和社會效益，為此必須是國內(nèi)鋼鐵企業(yè)具備獨立設(shè)計地下卷取機的能力。針對此情況，由中國第二重型機械集團公司和共同承擔了以川威集團公司的950熱軋帶鋼生產(chǎn)線卷取機改造的研究任務(wù)，目的是要從理論上解決地下卷取機的設(shè)計問題。
首先計算卷取電機所需提供的力矩，包括彎曲力矩、摩擦力矩、張力力矩、慣性力矩。其中，慣性力矩的變化是最為復(fù)雜的，故本文將其重點研究對象。先對卷取機卷筒及其傳動部分進行三維建模，得出卷筒及其傳動部分的慣性力矩隨卷取時間的變化曲線；再研究卷筒上所纏繞的帶卷的慣性力矩隨卷取時間的變化。得到總慣性力矩后，將四類力矩總和，最終確定卷筒電機的力矩隨時間的變化曲線，并通過力矩求出卷筒電機所需提供的功率，從而對電機進行了校核。
然后分析帶鋼在卷取時所需要提供的助卷輥壓緊力，并對助卷臂驅(qū)動液壓缸進行了校核，同時分析卷取溫度，材料，帶鋼寬度、帶鋼厚度對壓緊力的影響。
最后研究了夾送輥的主要參數(shù)包括下夾送輥直徑，下夾送輥中心和卷筒中心的相互位置。
該課題的研究工作，不僅運用了材料力學、高等數(shù)學、軋鋼機械等基礎(chǔ)知識，也運用了MATLAB、Pro/E等現(xiàn)代軟件知識，后者具有很強的工具作用，幫助設(shè)計人員分析和論證參數(shù)的合理性。
本課題的研究方法和結(jié)論，為威集團公司的熱軋生產(chǎn)線上的卷取機進行改進提供了技術(shù)依據(jù)。另外，也可以為同類的課題研究提供參考，推進我國冶金設(shè)備國產(chǎn)化進程。

關(guān)鍵詞：熱軋，卷取機，力矩，助卷輥壓緊力,校核
 

ABSTRACT

Down coiler is one of the most important equipment for coiling strip. It is used to coil hot strip into coiled steel, and widely used in hot strip mill, thin and middle hickness slab cast&rolling mill。
At present, all down coilers used in large steel enterprises of our nation were imported. It has great economic benefit and social benefit to apply and maintain this equipment. So, domestic steel enterprises must have the ability to design down coiler in whole independently.Under the circumstance, China National Erzhong Group Co. took on the researching task,which is the corporation’s 950 Chuanwei hot strip production line for the study, as the product specifications must change its production line coiling machine improvements ,together with Chongqing University aimming at fundamentally solving the basic design problem for down coiler from theory. This paper mainly contains the following parts:
Firstly, the moments that the coiling motor offers must be calculated. It consists of bending moment, friction moments, tension moments, and inertia moments. Inertia moment, which is the most complex, is the stress of this part. At first, the model of the reel block and its transmission components must be established. Then the revolving angular acceleration also has to be  established. According to the above two factors, the inertia moment expression can be concluded finally. Adding the four moments, we can get the requested moment of the coiling motor,and based on the moment,we can get the requested power of the coiling motor.
Secondly, the pressure of the coil wrapper and the factors that act on the pressure must be analyzed. The practical requirements in construction may be met through the analysis on the intensity of the hydraulic cylinder。
Finally,this paper analyze the main parameter of bottom pinch roll model that we have created include: the diameter of top-bottom pinch rolls  and the distance between two centers of bottom pinch roll and mandrel.
In this researching task, it is applied that not only the basic knowledge such as mechanics of materials mechanics, higher mathematics, steel rolling engineering, but also the modernistic design software such as MATLAB、Pro/E.In addition, it is provided with the implemental function, which can help technical personnel analyze and testify the disciplinarian of the parameters and the rationality of the certain result.
The conclusions and the methods used in Chuanwei will offer the technical basis; It can also offer the reference for the problem resemble.

Key words：Hot rolling, Colier, moment, Pressure force of the coil wrapper rolls,check
 

目   錄
摘    要 I
ABSTRACT II
1  熱軋帶鋼卷取機介紹 1
1.1 熱軋帶鋼卷取機簡述 1
1.2 熱軋帶鋼卷取機的分類 2
1.2.1按其助卷輥數(shù)目分為： 2
1.2.2按其卷筒結(jié)構(gòu)分： 2
1.2.3按其滑架移動方式分: 2
1.2.4按其布置形式分： 2
1.3 卷取機結(jié)構(gòu) 2
1.3.1側(cè)導板 2
1.3.2夾送輥 3
1.3.3助卷輥 3
1.3.4卷筒 3
1.3.5卸卷小車 4
1.3.6打捆機 4
1.3.7運輸鏈 4
1.4 卷取機卷取工藝 4
1.4.1卷取準備 4
1.4.2帶鋼卷取 4
1.4.3卷取機切換 6
1.4.4卷取系統(tǒng)的控制 6
1.5 卷取機發(fā)展的趨勢 6
1.6 課題來源、背景 7
1.7卷取機的技術(shù)性能參數(shù) 7
2  彈塑性變形理論基礎(chǔ) 9
2.1 彈性變形理論 9
2.2 塑性變形理論 10
3  彎曲過程慣性力矩補償 12
3.1 力矩分析 12
3.2 慣性力矩的分析及推導 13
3.3 卷筒及傳動部分轉(zhuǎn)動慣量計算 14
3.3.1卷筒各組成部分建模 14
3.3.2電機軸上總轉(zhuǎn)動慣量的計算 15
3.4 帶鋼的轉(zhuǎn)動慣量及其變化率的分析 16
3.5 卷筒轉(zhuǎn)角速度及其隨時間變化率的分析 17
3.6 卷取機總慣性力矩補償 18
3.6.1總慣性力矩的計算 18
3.6.2總慣性力矩隨時間的變化曲線 19
3.7 本章小結(jié) 20
4  電機總負載力矩 21
4.1 張力矩  21
4.2 彎曲力矩  23
4.2.1彎曲過程中帶鋼變形的分析 23
4.2.2 彎曲力矩的確定 23
4.3摩擦力矩  24
4.4電機總負載力矩的計算 26
4.5卷筒電機校核 27
4.6本章小結(jié) 28
5  助卷輥的運動及受力分析 29
5.1 助卷輥運動過程分析 29
5.2 助卷輥壓緊力的確定方法 29
5.3 助卷輥壓力校核 32
5.4 影響助卷輥壓力的因素 32
5.4.1沖擊力的影響 32
5.4.2帶厚、帶寬、卷取溫度和帶鋼材料的影響 32
5.5 本章小結(jié) 33
6  夾送輥結(jié)構(gòu)參數(shù)的確定 34
6.1 對夾送輥裝置的工藝要求 34
6.2下夾送輥直徑的確定 34
6.3下夾送輥中心與卷筒中心相互位置的兩個參數(shù)的確定 35
6.3.1垂直距離A值的求解 36
6.3.2水平距離B值的確定 36
6.4 本章小結(jié) 37
7 結(jié)論 38
參 考 文 獻 39