【摘要】：社會的進步和經(jīng)濟的高速發(fā)展促進了建筑行業(yè)的發(fā)展。塔式起重機作為建筑行業(yè)中不可或缺的施工設(shè)備,在這一過程中起到了舉足輕重的作用,我國已經(jīng)邁入了塔機大國這一行列。針對撫順永茂建筑機械有限公司的需求,研究開發(fā)了20000KNm級的ST80/238塔式起重機,其新穎的倒三角形起重臂結(jié)構(gòu)形式,目前市場上很少能見到。本文研究了起重臂結(jié)構(gòu)的工作狀態(tài)和受到的載荷,并運用ANSYS軟件全面地分析了臂架的受力狀態(tài),為起重臂的安全可靠工作提供了保證,也為未來同類產(chǎn)品的研究開發(fā)奠定了技術(shù)基礎(chǔ)。主要的研究內(nèi)容如下： (1)對起重臂桿件的受力狀態(tài)進行研究,得出了起重臂臂根處桿件,起重臂腹桿及主肢的受力特點及原因；研究了斜桁架斜腹桿布局方式對周圍桿件受力狀態(tài)的影響,指出了倒三角形起重臂與正三角形起重臂腹桿的傳力方式和受力的特點不同之處,并根據(jù)研究的成果對倒三角形起重臂桿件的選取提出了建議,為倒三角形起重臂系統(tǒng)的設(shè)計和研究提供參考； (2)分析了無輪壓作用的下弦桿單節(jié)間結(jié)構(gòu)的受力狀態(tài),得出了下弦桿上翼緣板、腹板及下翼緣板的受力特點并分析原因； (3)通過改變翼緣板和腹板厚度,研究了下弦桿單節(jié)間結(jié)構(gòu)的受力狀態(tài),得出了上翼緣板及腹板厚度變化對斜桁架腹桿與下弦桿連接位置的受力及撓度影響,為下弦桿的研究提供相關(guān)數(shù)據(jù)及信息： (4)研究了下弦桿在輪壓作用下的受力狀態(tài),得到了輪壓的作用位置與下弦桿翼緣板和腹板受力的關(guān)系,指出了輪壓對腹板和下翼緣板的翹曲有影響,應(yīng)嚴格考核它們的剛度； (5)根據(jù)ST80/238塔機的倒三角形起重臂自身特點,本著設(shè)計合理,結(jié)構(gòu)新穎,經(jīng)濟合理,方便安拆,安全可靠的原則,結(jié)合ANSYS軟件對拉索受力分析結(jié)果,得出了拉索的受力特點,設(shè)計了雙吊點-四拉索結(jié)構(gòu)。該拉索結(jié)構(gòu)能夠?qū)崿F(xiàn)起重臂的動作要求、有別于以往拉桿的結(jié)構(gòu)形式、安裝和拆卸簡單易行、并嚴格考核強度條件,確定了該拉索結(jié)構(gòu)的設(shè)計是合理的。 本課題的研究成果對倒三角形起重臂塔式起重機的研究設(shè)計提供了可參考的數(shù)據(jù),有利于塔式起重機的發(fā)展和技術(shù)創(chuàng)新。
[Abstract]:Social progress and high-speed economic development have promoted the development of the construction industry. Tower crane, as an indispensable construction equipment in the construction industry, has played an important role in this process. According to the demand of Fushun Yongmao Construction Machinery Co., Ltd, the ST80/238 tower crane of 20000KNm class is researched and developed. In this paper, the working state and load of the lifting arm structure are studied, and the stress state of the boom is analyzed by using ANSYS software, which provides a guarantee for the safe and reliable work of the lifting arm. Also for the future research and development of similar products laid a technical foundation. The main research contents are as follows: (1) the stress state of the lifting arm member is studied, and the force characteristics and reasons of the lifting arm root member, the lifting arm web rod and the main limb are obtained. In this paper, the influence of the layout of oblique web bar of oblique truss on the stress state of the surrounding member is studied, and the difference between the force transfer mode and the force characteristics of the inverted triangle lifting arm and the equilateral triangle lifting arm web member is pointed out. According to the results of the research, some suggestions are put forward for the selection of the inverted triangle lifting arm, which provides a reference for the design and research of the inverted triangle lifting arm. (2) the stress state of the single section structure of the lower chord without wheel compression is analyzed, and the stress characteristics of the upper flange plate, web plate and lower flange plate of the lower chord are obtained and the reasons are analyzed. (3) by changing the thickness of the flange plate and the web plate, the stress state of the single section structure of the lower chord is studied, and the influence of the thickness of the upper flange plate and the web plate on the connecting position of the web bar and the lower chord of the oblique truss is obtained. This paper provides relevant data and information for the study of the lower chord: (4) the stress state of the lower chord under the wheel pressure is studied, and the relationship between the position of the wheel pressure and the force on the flange plate and web plate of the lower chord is obtained. It is pointed out that wheel pressure has an effect on the warpage of web plate and lower flange plate, and their stiffness should be evaluated strictly. (5) according to the characteristics of the inverted triangle lifting arm of ST80/238 tower crane, based on the principle of reasonable design, novel structure, reasonable economy, convenient installation, safe and reliable, combined with the result of the analysis of cable force by ANSYS software, The stress characteristics of cable are obtained, and the double-point-four-cable structure is designed. The cable structure can realize the action requirement of the lifting arm, which is different from the structure form of the traditional pull rod. The installation and disassembly are simple and easy, and the strength condition is strictly checked. The design of the cable structure is determined to be reasonable. The research results of this paper provide the reference data for the research and design of the inverted triangle jib crane, which is beneficial to the development and technical innovation of the tower crane.
【學(xué)位授予單位】：沈陽建筑大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH213.3

【參考文獻】

相關(guān)期刊論文 前10條

1 張瑞軍;張明勤;張青;韓立芳;李海青;;塔式起重機多吊點吊臂結(jié)構(gòu)的受力計算[J];工程機械;2007年08期

2 劉佩衡;國內(nèi)外塔式起重機發(fā)展概況[J];工程機械與維修;1997年08期

3 武力;;中國塔式起重機市場特征及發(fā)展展望[J];工程機械與維修;2010年07期

4 楊波;羅金橋;;基于ANSYS汽車驅(qū)動橋殼的有限元分析[J];機械研究與應(yīng)用;2005年06期

5 李守林;我國塔式起重機的現(xiàn)狀與發(fā)展[J];建筑機械化;2000年06期

6 劉佩衡;我國塔式起重機行業(yè)發(fā)展歷程(一)[J];建筑機械化;2003年10期

7 劉佩衡;我國塔式起重機行業(yè)發(fā)展歷程(二)[J];建筑機械化;2003年11期

8 劉佩衡;我國塔式起重機行業(yè)發(fā)展歷程(三)[J];建筑機械化;2003年12期

9 楊慧勇;殷晨波;姚克恒;;基于ANSYS的塔機起重臂靜力學(xué)及模態(tài)分析[J];建筑機械化;2010年04期

10 謝劍剛,張勇;門座式起重機小拉桿提前損壞的原因探討[J];建筑機械;2004年04期

，

本文編號：2396315