本文選題：環(huán)行起重機(jī) + 吊鉤組　； 參考：《大連理工大學(xué)》2012年碩士論文

【摘要】：核電站環(huán)行起重機(jī)運(yùn)行于核反應(yīng)堆廠房上方的環(huán)形軌道上,用于吊運(yùn)反應(yīng)堆壓力容器頂蓋和堆內(nèi)構(gòu)件,對(duì)其吊裝定位精度要求極高。核電站環(huán)行起重機(jī)吊鉤組升降運(yùn)行的垂線偏差,是影響定位精度的關(guān)鍵因素。本課題屬于遼寧省科學(xué)計(jì)劃項(xiàng)目,所研究的核電站環(huán)行起重機(jī)吊鉤組升降垂線偏差,是百萬(wàn)千瓦級(jí)三代核電站起重設(shè)備重大關(guān)鍵技術(shù),課題研究為核電站環(huán)行起重機(jī)起升機(jī)構(gòu)的合理布置和鋼絲繩的平衡纏繞方法提供了理論依據(jù)�？紤]到靜力學(xué)方法忽略了模型的動(dòng)力學(xué)特性,而動(dòng)力學(xué)方法只能支持簡(jiǎn)單倍率鋼絲繩的近似模型,因此本文綜合靜力學(xué)和動(dòng)力學(xué)的方法研究吊鉤組升降垂線偏差。本文主要工作如下： (1)建立了核電站環(huán)行起重機(jī)吊鉤組的靜力學(xué)模型,開發(fā)了核電站環(huán)行起重機(jī)吊鉤組升降垂線偏差分析系統(tǒng)。假設(shè)吊鉤組在起升各個(gè)高度受力平衡,將每段鋼絲繩等效為一個(gè)力的方向,通過(guò)求解鋼絲繩空間位置求得力的方向,通過(guò)求解鋼絲繩拉力求得力的大小,從而建立力和力矩平衡方程,結(jié)合鋼絲繩繩長(zhǎng)守恒方程,中間滑輪力矩平衡方程建立吊鉤組系統(tǒng)的平衡方程,從而建立核電站環(huán)行起重機(jī)吊鉤組升降垂線偏差分析系統(tǒng)的力學(xué)模型。采用MATLAB軟件開發(fā)了核電站環(huán)行起重機(jī)吊鉤組升降垂線偏差分析系統(tǒng),分析了鋼絲繩纏繞方式、起升高度、起重量、工況對(duì)吊鉤組的運(yùn)行軌跡及垂線偏差的影響。 (2)建立了核電站環(huán)行起重機(jī)吊鉤組的動(dòng)力學(xué)模型。在Pro/E軟件中建立了核電站環(huán)行起重機(jī)吊鉤組的三維實(shí)體模型,并導(dǎo)入ADAMS/View軟件環(huán)境,采用軸套力方法建立鋼絲繩纏繞的動(dòng)力學(xué)模型,對(duì)升降垂線偏差進(jìn)行動(dòng)力學(xué)仿真,求解吊鉤組初始平衡位置,分析起重量、起升速度對(duì)吊鉤組運(yùn)行軌跡及垂線偏差的影響。 (3)采用靜力學(xué)和動(dòng)力學(xué)方法對(duì)典型算例進(jìn)行了分析。靜力學(xué)分析結(jié)果表明：滑輪組對(duì)稱布置垂線偏差小,起升高度與垂線偏差呈近似遞增關(guān)系,起重量對(duì)垂線偏差的影響不明顯,吊鉤組下降工況與起升工況相比,垂線偏差小且偏差方向相反。動(dòng)力學(xué)分析結(jié)果表明：動(dòng)力學(xué)分析結(jié)果與靜力學(xué)分析結(jié)果趨勢(shì)一致,只是存在一定程度波動(dòng),鋼絲繩纏繞平面上垂線偏差波動(dòng)峰值的連線近似為靜力學(xué)分析結(jié)果,沿卷筒軸的垂線偏差圍繞零值波動(dòng)。
[Abstract]:The annular crane of nuclear power plant runs on the annular track above the nuclear reactor building, which is used to lift the top cover and the internal components of the reactor pressure vessel, and the precision of the lifting and positioning is very high. The vertical deviation of hooks is a key factor affecting positioning accuracy. This subject belongs to the Liaoning Province science plan project, the hoisting line deviation of the hoisting hook group of the ring crane of the nuclear power station studied, is the important key technology of the three generation nuclear power station lifting equipment of the million kilowatts class. The research provides a theoretical basis for the reasonable arrangement of hoisting mechanism and the balanced winding method of wire rope in annular crane of nuclear power station. Considering that the statics method neglects the dynamic characteristics of the model, but the dynamic method can only support the approximate model of the simple rate wire rope, the method of statics and dynamics is used to study the vertical line deviation of hoisting hooks. The main work of this paper is as follows: 1) the static model of hooks of annular cranes in nuclear power station is established, and the analysis system of vertical line deviation of hooks is developed. Assuming that the hooks are balanced at each height of the hoisting, each segment of the wire rope is equivalent to the direction of a force, the direction of the force is obtained by solving the space position of the wire rope, and the size of the wire rope pulling is solved. Thus, the balance equations of force and torque are established, and the balance equations of hooks system are established by combining the conservation equation of wire rope length and the moment balance equation of intermediate pulley. The mechanical model of the vertical line deviation analysis system for hooks of ring crane in nuclear power station is established. Using MATLAB software, a lifting and vertical deviation analysis system for hooks of annular crane in nuclear power station is developed. The influence of wire rope winding mode, lifting height, lifting weight and working condition on the running track and vertical line deviation of hoist hooks is analyzed. The dynamic model of hooks for annular cranes in nuclear power station is established. The three-dimensional solid model of hooks of annular crane in nuclear power station is established in Pro/E software. The dynamic model of wire rope winding is established by using the method of shaft sleeve force, and the dynamic simulation of the deviation of lifting vertical line is carried out by introducing the ADAMS/View software environment. The initial balance position of the hook group is solved and the effects of lifting weight and lifting speed on the running track and vertical deviation of the hook group are analyzed. 3) A typical example is analyzed by statics and dynamics method. The results of statics analysis show that the vertical deviation of symmetrical arrangement of pulley group is small, the rising height is approximately increasing with the deviation of vertical line, the influence of lifting weight on vertical line deviation is not obvious, and the drop condition of hook group is compared with the lifting condition. The vertical deviation is small and the deviation direction is opposite. The results of dynamic analysis show that the trend of dynamic analysis is consistent with that of static analysis, but there is a certain degree of fluctuation, and the line of the peak value of vertical deviation fluctuation on the winding plane of wire rope is approximately the result of static analysis. The perpendicular deviation along the reel shaft fluctuates around zero.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH21

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本文編號(hào)：1918720