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固定式带式输送机设计【7张CAD图纸和毕业论文】【矿山输送机械】

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引言 1
1 带式输送机的概述 2
1.1运输连续机可分为 2
 1.2带式输送机具有的特点 2
1.3带式输送机的不足 3
1.4带式输送机的分类 3
1.5特种带式输送机及特点 3
1.6带式输送机的工作原理 4
1.7发展历史及现状 5
1.8带式输送机使用中存在的问题及原因 6
1.8.1带式输送机基础部件的改进设计 6
1.8.2 采取的对策 7
2   方案的论证 10
2.1 方案的确定 10
2.2带式输送机的主要部件 13
2.3 带式输送机的结构和布置形式 15
2.3.1 带式输送机的结构 15
2.3.2 布置方式 16
3  带式输送机的设计计算 20
3.1  设计参数 20
3.2输送带类型的选择 20
3.2.1选择的原则 20
3.2.2具体选择 20
3.2. 3对输送带的主要要求 21
3.3 带速的确定 22
3.4带宽的确定 22
3.5带式输送机的驱动功率计算 23
3.5.1主要阻力 23
3.5.2传动滚筒上所需圆周力的计算 24
3.5.3特种主要阻力 25
3.5.4 附加特种阻力计算 26
3.5.5 倾斜阻力的计算 26
3.6输送带不打滑条件校核 27
3.7输送带下垂度校核 27
3.8减速器的设计与计算 28
3.8.1电动机的选型 29
3.8.2 减速器 传动方案及传动件设计计算 29
3.9轴的设计 39
3.10减速器箱体的结构设计 42
3.11轴承的校核 44
3.12键的选择及校核 45
3.13减速器附件的设计 46
3.14 拉紧力的计算及选择 46
3.15托辊的选取 49
3.16静载荷计算 50
4  带式输送机的操作、维护和安装 52
4.1 启机和停机 52
4.2带式输送机的维护 52
4.3皮带打滑的解决办法 55
4.3.1重锤张紧皮带运输机皮带的打滑 55
4.3.2螺旋张紧或液压张紧皮带机的打滑 55
4.3.3其它 55
4.4皮带运输机皮带跑偏的调整 56
4.4.1 调整承载托辊组 56
4.4.2安装调心托辊组 56
4.4.3调整驱动滚筒与改向滚筒位置 56
4.4.4张紧处的调整 57
4.4.5 转载点处落料位置对皮带跑偏的影响 57
4.4.6双向运行皮带运输机跑偏的调整 57
4.5带式输送机的安装 58
结论 60
参考文献 61
英文翻译 62
中文译文 67
致谢 73


引言
带式输送机是连续运行的运输设备,在冶金、采矿、动力、建材等重工业部门及交通运输部门中主要用来运送大量散状货物,如矿石、煤、砂等粉块状物和包装好的成件物品。带式输送机具有运量大、运输连续、维护简便等特点,在煤矿生产中是比较经济可靠的运输设备,所以已经成为井下原煤运输的主要运输设备,为了适应现代化矿井高产高效的发展,带式输送机朝着大功率、大运量、长距离的方向发展。它一般由传动滚筒、改向滚筒、托辊、机架、输送带、驱动装置、拉紧装置、制动装置和逆止器等部分组成。到目前为止已有200多年的发展历史,广泛用于冶金、矿山化工、煤炭、电站、轻工、电力等许多工业领域。今年来的大型带式输送机得到了更迅猛发展,从运输量、运输距离和经济效益等方面,已经形成了与汽车、火车相抗衡的局面。带式输送机具有结构简单、输送物料范围广泛、输送量大、输送距离长、对线路适应性强、装卸物料方便、可靠性高、运营费低、基建投资省、效率该、应用领域广阔、市场巨大等一系列优点,使其在国内外获得了大力发展。
带式输送机是连续运输机的一种,连续运输机是固定式或运移式起重运输机中主要类型之一,其运输特点是形成装载点到装载点之间的连续物料流,靠连续物料流的整体运动来完成物流从装载点到卸载点的输送。在工业、农业、交通等各企业中,连续运输机是生产过程中组成有节奏的流水作业运输线不可缺少的组成部分。凡建材、化工、矿山、码头、仓库、车站、货场、粮站、港口、船舶等行业和场所皆可使用,它是一种广泛通用的输送机械。目前带式输送机已广泛应用于国民经经济各个部门,近年来在露天矿和地下矿的联合运输系统中带式输送机又成为重要的组成部分。在过去的几十年中,带式输送机取得了很大的发展,突出的是钢绳芯输送带在长距离、大运量、高速度输送线上的应用。带式输送机的结构、输送能力和带速都有不同程度的发展。特别是由于大宗散料输送系统对带式输送机的性能要求越来越高。随着国内矿山开采自动化程度的提高,港口业务不断增多,电厂发电的不断提升,粮食产量及深加工行业等各领域市场的不断发展,国内物料运输业的发展将持续增长。
选择带式输送机这种通用机械的设计作为毕业设计的选题,能让我更好的去认识它、并去了解它,更能培养我们独立解决实际问题的能力,通过这次的毕业设计也是我们对所学基本理论知识和专业知识的综合应用,使我们的设计、计算、绘图等能力得到了全面的训练,让我们所学的知识得到了更进一步的升华。
1带式输送机的概述

带式输送机是连续运输机的一种,起运输特点是形成装载点之间的连续物料流,靠连续物料流的整体运动来完成物料从装载点到卸载点的输送。在工业、农业、交通等各企业中,连续运输机是生产过程组成有节奏的流水作业运输线不可缺少的组成部分。



内容简介:
中 国 矿 业 大 学本 科 生 毕 业 设 计姓 名: 张钰菡 学 号:21060274 学 院: 应用技术学院 专 业: 机械工程及自动化 设计题目: 固定式带式输送机设计 专 题: 指导教师: 杨善国 职 称: 副教授 2010 年 6 月 徐州中国矿业大学毕业设计任务书学院 应用技术学院 专业年级 机自 06-2 班 学生姓名 张钰菡 任 务 下 达 日 期 : 2010 年 3 月 1 日毕业设计日期: 2010 年 3 月 15 日至 2010 年 6 月 18 日毕业设计题目:固定式带式输送机设计毕业设计专题题目:毕业设计主要内容和要求:进行带式输送机的整机设计。带式输送机是连续运输的一种,其运输特点是到装载点之间的连续物料流,靠运输物料流的整体运动来完成物流从装载点到卸载点的运输。要求: 绘制相关图纸 3.5 张左右(折合 A0 图纸) ; 编写设计说明书一份,正文 55 页左右,其格式要符合相关规定; 中英文摘要 400 字左右; 翻译外文文献一篇, (中文字 3000 字左右).院长签字: 指导教师签字:中国矿业大学毕业设计指导教师评阅书指导教师评语(基础理论及基本技能的掌握;独立解决实际问题的能力;研究内容的理论依据和技术方法;取得的主要成果及创新点;工作态度及工作量;总体评价及建议成绩;存在问题;是否同意答辩等):成 绩: 指导教师签字:年 月 日中国矿业大学毕业设计评阅教师评阅书评阅教师评语(选题的意义;基础理论及基本技能的掌握;综合运用所学知识解决实际问题的能力;工作量的大小;取得的主要成果及创新点;写作的规范程度;总体评价及建议成绩;存在问题;是否同意答辩等):成 绩: 评阅教师签字:年 月 日中国矿业大学毕业设计评阅教师评阅书评阅教师评语(选题的意义;基础理论及基本技能的掌握;综合运用所学知识解决实际问题的能力;工作量的大小;取得的主要成果及创新点;写作的规范程度;总体评价及建议成绩;存在问题;是否同意答辩等):成 绩: 评阅教师签字:年 月 日中国矿业大学毕业设计答辩及综合成绩答 辩 情 况回 答 问 题提 出 问 题 正 确基 本正 确有 一般 性错 误有 原则 性错 误没 有回 答答辩委员会评语及建议成绩:答辩委员会主任签字: 年 月 日学院领导小组综合评定成绩:学院领导小组负责人: 年 月 日摘 要当今,无论从输送量、运距、经济效益等方面来衡量,带式输送机已经可以同火车、汽车运输相抗衡,成为三足鼎立局面,并成为各国争先发展的行业。带式输送机是煤矿最理想的高效连续运输设备,与其他运输设备相比,具有输送距离长、运量大、连续运输等优点,而且运行可靠、易于实现自动化和集中化控制,尤其对高产高效矿井,带式输送已成为煤炭开采机电一体化技术与装备的关键设备,随着我国高产高效矿井的出现,原有的带式输送机无论是主参数还是运行性能都已不能满足要求,必须向长距离、高带速、大运量、大功率的大型化方向发展,并要改善和提高运行性能,确保安全可靠。煤矿带式输送机技术的发展趋势:设备大型化,提高运输能力;为了适应高产高效集约化生产的需要,带式输送机的输送能力需要加大,长距离、高带速、大运量、大功率是今后发展的必然趋势,也是高产高效矿井运输技术的发展方向,在今后的 10a 内输送量要提高到 30004000t/h,带速提高到 46m/s,输送长度对于可伸缩带式输送机要达到 3000m。对于钢绳芯强力带式输送机需加长至 5000m 以上,单机驱动功率要求达到10001500KW,输送带抗拉强度要达到 6000N/ mm(钢绳芯)和 2500N/mm(钢绳芯) 。尤其是煤矿井下顺槽可伸缩输送技术的发展,随着高产高效工作面的出现及煤炭科技的不断发展,原有的可伸缩带式输送机,无论是主参数,还是运行性能都难以适应高产高效工作面的要求,煤矿现场急需主参数更大,技术更先进,性能更可靠的长距离、大运量、大功率顺槽可伸缩带式输送机,以提高我国带式输送机技术的设计水平,填补国内空白,接近并赶上国际先进工业国的技术水平。关键词:带式输送机 大运量 长距离ABSTRACTIn now days ,whether appraise from carry、length 、economy-effectiveness and so on.It can be the same train,automobile transport to match the situation as it stands,and become the first to the development of industries.Take types transporting machine is the coal mine is the most ideal to transport an equipments efficiently and continuously,compared with other conveyance equipmentses have distance of transport long,the carrying capacity is big and continue to transport etc.advantage,and circulate credibility,be easy to the realization automation and concentrate to turn a control,particularly to high produce efficiently the mineral well,the take type transports the key equipments that the machine has become coal to mine the machine electricity integral whole to turn a technique and equips.Along with the our country is high to produe of mineral well efficiently now,the take type that is originally possesseds transporting machine is a regardless main parameter to still circulate functions and all have already cant satisfy a request,have to the long pull,high take soon,big carrying capacity,big power of large turn the direction development,and want improve and raise to circulate function, insure safe credibility。The coal mine take type transports technical development trend of machine .The equipments is large to turn,the exaltation transport an ability:For adapt high produce efficiently intensive turn the demand of the production,the take type transports machine to transport an ability to want enlargement.Long-distance,high belt speed,large-capacity,high-power future is the inecitable trend of development,as well as transport for the high-technology development direction.Transport quantity and raise to the 3000-4000 ts/h in the 10 as of aftertime also raise to the 4-6 ms/s soon,transport length to transport to the flexible take type confidential attain a 3000ms.For strength steel belt conveyor take longer to 5,000 m above single-driven power demand reached 1,0001,500 kw,conveyor tensile strength reached 6,000 N/mm (steel cord)and 2500 N/mm (steel cord).By the coal mine well to descend agreeable slot particularly flexible transport a technical development,along with high produce efficiently continuously develop of the emergence and the coal science and technology of work the noodles,the original flexible take type transports machine,is a regardless main parameter,still circulate functions all hard adapt high produce efficiently a request of work the noodles,the coal mine needs main parameter urgently on the scene greater ,the technique is more advanced,function more dependable long pull ,big carrying capacity 、big power fluently slot the flexible take type transport machine ,transporting technical design level of machine by the exaltation our country take type,filling up local bland,near to and catch up the technique level of the international advanced industrial country. Keywords:Belt conveyor Large capacity Long distance编 号 :( )字 号本 科 生 毕 业 设 计 ( 论 文 )题目: 姓名: 学号: 班级: 二一年六月固定式带式输送机设计张钰菡 21060274机械工程及自动化 06-2 班I目 录引言 .11 带式输送机的概述 .21.1 运输连续机可分为 .21.2 带式输送机具有的特点 .21.3 带式输送机的不足 .31.4 带式输送机的分类 .31.5 特种带式输送机及特点 .31.6 带式输送机的工作原理 .41.7 发展历史及现状 .51.8 带式输送机使用中存在的问题及原因 .61.8.1 带式输送机基础部件的改进设计 .61.8.2 采取的对策 .72 方案的论证 .102.1 方案的确定 .102.2 带式输送机的主要部件 .132.3 带式输送机的结构和布置形式 .152.3.1 带式输送机的结构 .152.3.2 布置方式 .163 带式输送机的设计计算 .203.1 设计参数 .203.2 输送带类型的选择 .203.21 选择的原则 .203.22 具体选择 .203.2. 3 对输送带的主要要求 .213.3 带速的确定 .223.4 带宽的确定 .2235 带式输送机的驱动功率计算 .233.5.1 主要阻力 .233.5.2 传动滚筒上所需圆周力 UF的计算 .243.5.3 特种主要阻力 .253.5.4 附加特种阻力计算 .263.5.5 倾斜阻力的计算 .263.6 输送带不打滑条件校核 .273.7 输送带下垂度校核 .273.8 减速器的设计与计算 .283.8.1 电动机的选型 .293.8.2 减速器 传动方案及传动件设计计算 .293.9 轴的设计 .393.10 减速器箱体的结构设计 .423.11 轴承的校核 .443.12 键的选择及校核 .453.13 减速器附件的设计 .46II3.14 拉紧力的计算及选择 .463.15 托辊的选取 .493.16 静载荷计算 .504 带式输送机的操作、维护和安装 .524.1 启机和停机 .524.2 带式输送机的维护 .524.3 皮带打滑的解决办法 .554.3.1 重锤张紧皮带运输机皮带的打滑 .554.3.2 螺旋张紧或液压张紧皮带机的打滑 .554.3.3 其它 .554.4 皮带运输机皮带跑偏的调整 .564.4.1 调整承载托辊组 .564.4.2 安装调心托辊组 .564.4.3 调整驱动滚筒与改向滚筒位置 .564.4.4 张紧处的调整 .574.4.5 转载点处落料位置对皮带跑偏的影响 .574.4.6 双向运行皮带运输机跑偏的调整 .574.5 带式输送机的安装 .58结论 .60参考文献 .61英文翻译 .62中文译文 .67致谢 .73Available online at wwwsciencedirectOOm一一,:,ScienceDirectJ China Univ MinmgTeehnol 18(2008)0629-0633JOURNAL OF CHINA UNIVERSITY OFMINING&TECHNOLOGYiiiiii;iiiii|一WWWelseviercomlocatejcumtDynamic characteristics of conveyor beltsHOU You-fu,MENG QingruiSchool ofMechanical and Electrical Engineering,China University ofMiningTechnology,Xuzhou,Jiangsu 221116。ChinaAbstract:The dynamic characteristics of a beIt conveyor are determined to a large extent by the properties of the beItThis paperdescribes experiments designed to establish the dynamic properties of beIting materialThe dynamic elastic modulus,viscousdamping and theological constants of the belt were measuredSeveral properties were studied as a function of the tensile 10ading onthe beItThese included longitudinal vibrationthe natural vibration frequency iB the transverse direction and the response to animpulse excitationVibration response was observed under severaJ different excitation frequenciesMost of these properties havenot been tested previously under conditions appropriate for the ISO,DP9856 standardo types of belt were testeda steeI reinforced belt and a fabric reinforced beltThe test equipment was built to provide data appropriate for designing belt conveyorsItwas observed tIlat the stress wave propagation speed increased with tensile Ioad and that tensile load was the main factor influencing longitudinal vibrationsKey words:experimentai investigation;dynamic characteristics;conveyor belt1 IntroductionBelt conveyors are,incosteffective solution formost cases,the mosthandling bulk materialmass flows over short and medium conveying distancesThe belt is a key component of these conveyors and its dynamic characteristics determine theworking performance to a great extentAt present,experimental research on the dynamic characteristicsof conveyor belts is mainly concentrated on testingdynamic elastic modulus and viscous damping following the ISO,DP9856 standardLiule research onother dynamic parameters has been carried outE Langebrake et a1tested the breaking and splicestrength of steel cord belts by using a large magneticflux leakage testerI“Blazej et a1tested the tensilestrength of the belt and the strength parameters of therubber used for the adhesivebond ioint in splices byusing a ZP40 testing machine1Hou et a1reviewedthe experimental research work on the dynamic characteristics of the belt published over the past twodecadesThey considered that the test piece used inthe previous research work,based on theIS0,DP9856 standard,was too small(50 mmx300mm)to acquire reliable test data and suggested that alarger one should be adoptedplThis paper describes the design and constructionof an apparatus to investigate the dynamic characteristies of conveyor beltingTwo types of belta fabricbelt and a steel cord belt,commonly used in coalmines were examined2 Experimental21 ParametersThe main parameters studied by the experimentsa:1)The dynamic performance parameters of thebelt2)The relationship between the stress wave propagation speed and the tension force on the belt3)The dynamic response characteristics of the beltunder different tension forces and exciting frequencies4、The natural frequency of transverse vibration ofthe belt22 MethodsThe first step is pretreatment of the test piece,which includes the measurement of its size and peeling two ends off for grippingThen the test piece isinstalled on the test apparatus and kept in tension for24 hours under a given tension forceEach individualtest is repeated ten times and the average value is re-ported as the final test data1)By using the shock response method,the stresswave propagation speed C was found and used toReceived 12 March 2008;accepted 15 July 2008Corresponding authorTel:+8613805207270;Email address:hyfcumtsohucom登一万方数据calculate the dynamic elastic modulus局Acceleration sensors were fixed at certain points to record theresponse signalThe stress wave propagation time tcan be obtained by comparison of the signals of allimpact force and the response signals picked up bythe acceleration sensorsThe stress wave propagationspeed C can be calculated and Ed is then given bythe equation C=e-,where p is the density of theV PbeIt2)The rheoiogical constant_,of the belt is obtained by analyzing the shock and vibration signalsfrom displacement and acceleration sensors mountedat the sane placeThe viscous damping r,of the beltcan be calculated by the relationship between f,rand目3)The response signals of the belt were tested under different tensile loads and exciting frequencies bymounting two displacement and two accelerationsensors at specified places and then analyzing theinteraction between the respective signals41 The natural frequency for transverse vibration ofthe belt was identified by using a swept sinewaveexcitation23 ApparatusThe data from the experiments carried out in thispaper are intended to assist in engineering applicationsTo acquire reliable test data,the apparatus isbuilt to simulate a real belt conveyorThe main fea-tures of the apparatus are as follows(see Fig1):1)The test piece is supported on carrying idlers,just as real conveyor belts are2、The distance between two carrying idlers is ap-proximately the same as in actual belt conveyors31 The test piece is placed horizontally so that thesag is similar to that of actual belt conveyors41 The test piece is tensioned by a screw nut51 The longitudinal exciting force is applied by avibration exciterThe signals were recorded with a TEAC MR 30tape recorder and were analyzed with an HP3562Adynamic signal analyzer111e test pieces includedfabric belts and steel cord belts commonly used incoal minesThe cross sections of the belts are shownin Fig2The design parameters of the belts are giveninTable 1Fig2 Cross section of the beltsT曲le 1 Parameters of tlle belts!兰!竺 !竺!:!:笠鐾 塞兰 !:竺!竺Steel cord belts STl000 32 025 1000 NmmFabric belts 800+4 32 025 70 Nmmlayer3 Results31 Propagation speed of a stress wave along thebeltThe stress wave propagation time can be obminedfrom the recorded impact force and response signalsThe stress wave propagation speed can be calculatedfrom the timeThe results are shown in Table 2The data in Table 2 show that the stress wavepropagation speed varies with tIle belt type and withtensile loadThe speed increases nonlinearly with anincrease in tensionUnder lower tension the stresswave propagation speed increases more quicklyAsthe tension force increased above a threshold thestress wave propagation speed changed only slightlyThe stress wave propagation speed in the steel cordbelts is greater tIlan that of the fabric belts for a giventensile loadTable 2 Stress wave propagation speed under different tensile Ioads rms)Tensionforce 00N1 6 8 10 12 14 16 18 20Steel cofd belts 11075 13045 15348 15252 15387 15541 15006 15828Fabric belts 8354 9469 10081 10737 10854 1 1066 1 1872 1 147732 Dynamic parameters of the beltsThe dynamic elastic modulus of the belts call be c砌捌胁c=序讪灿wnm万方数据HoUYoufuet al Dynamic characteristics of conveyor beIts 631Table 3The rheological constant of the belts Call be foundby analyzing the acceleration and displacement fromall impact;the results ale shown in Table 4Viscous damping coefficients can be calculatedusing the relationship between dynamic elastic mod-ulus,the rheological constant and the viscous damp-ing;the results ale shown in Table 5Table 3 Dynamic elastic modulus under different tensile loads(Nmm)Tensionforcc(kN) 6 8 10 12 14 16 18 20Stcel cord beIts 257344 357087 494162 488381 496743 507132 472506 525572Fabric belts 27889 35796 40642 46053 47089 48929 51358 52624Table 4 Rheological constants under different tensile loads (s)Tensionforce(kN) 6 8 10 12 14 16 18 20Steel cord beIts 0207 017l 0,151 o,155 0149 0,147 0145 o140Fabric beIts 0255 0245 O250 0253 0248 O26l O249 0246Table 5 Viscous damping under different tensile loads (Nsram)Tensionforce(kN) 6 8 10 12 14 16 18 20Steel cord belts 53269 61061 74618 75699 74014 74548 68512 73579Fabric belts 7109 8768 10160 11651 11675 12768 14031 12944From Tables 3,4 and 5it carl be seen that the dynamic performance parameters of the belts vary overa large range as the tensile load changesThis indicates that because of viscoelastic behavior the dynamic characteristics of the belt vary under differentboundary conditions33 Natural frequency of transverse vibration ofthe beltThe natural,transverse,vibration frequency is thatfrequency where the response of the belt to a sweptsine wave excitation is greatestThe results of sweptsine wave tests are shown in T-lble 6The data in Tlble 6 show that t11e natural frequencyfor transverse vibration in tIle two types of belt increases slightly with all increase in the tensile force ina nonlinear wayThe natural frequency for transversevibration of the steel cord belt is greater than that oftIIe fabric beltAccording to belt transverse vibrationt11eory,the steel cord belts are suitable for high speedbeIt conveyorsTable 6 Natural frequency of transverse vibration under different tensile loads(Hz)Tensionforce(kN) 6 8 10 12 14 16 18 20Steel cord belts 115 123 149 147 153 157 154 158Fabric belts 98 II,7 122 JJ8 121 119 J213 12234 Response characteristics under different ex-citing frequenciesHarmonic excitation was applied to the belt at dif-ferent frequencies(5 Hz,10 Hz,15 Hz,20 Hz,25 Hzand 30 Hz)under various tensile loadingsThe longitudinal vibration of steel cord belts was measuredThe results ale shown in Figs3 and 4From Figs3 and 4,it Call be seen that:1 1 The basic frequency of the longitudinal vibration of the belt is the same as the exciting frequency2)WAveform in the time domain varies with theexciting frequency under the same tension forceHigher-frequency harmonics decrease gradually with卸increase of the exciting frequencyAt arI excitingfrequency of 30 Hz the longitudinal vibration is closeto a first harmonic waveform3)By comparing the longitudinal vibration waveform shown in Fig3 with the one in Fig4 under thesame exciting frequency,it can be seen that the higher-frequency harmonic components are more obviouswhen the tension is greaterDifferent vibrationwaveforlns have different effects on dynamic stressHigher frequency harmonics intensify vibration of thebelt and lcad to increased dynamic stressTllis is alsothe hannful effect from excessive tension35 Response to shock excitationThe vibration response of steel cord belts to anirepulse excitation is shown in Fig5It call be seentllat the response decays exponentially,similar to theresponse characteristics of an elastic bodyThis indicates that the vibration characteristics of the belts alemainly determined by the elastic properties of theframework material of the belts万方数据邑3孚nol,2L5弓00b15f(ms)(a)Under exciting frequency of5 HzO 8020孚oo1215邑00一15O 80 160 240 320 400t(ms)(b)Under excmng fiequency of 10 Hz160 240 320 400 0 80t(ms)(c)Underexcitingfiequencyofl5 Hz0 80 160 240 320f(ms)32孚伽-3260 240 320 400f(ms)(d)Under exgitmg frequency of20 Hz0 80 160 240 320 400t(ms)(e)Under exciting frequency of25 Hz (0 Under exciting frequency of30 HzFig3 Longitudinal vibration of the belt in response to different excitation frequencies10 kN tensile load-o4一孚们一1220三吝03一14O 80 160 240 320 400t(ms)(a)Underexciting frequencyof5 H2_o1邑-04-09o5Z苦-05一150 80 160 240 320 4000 80 160 240 320 400 0,(ms)(c)Under excltmg厅equency of I 5 Hz0 80 160 240 320,(ms)(c)Under exciting rTequency of252OZ吝03一I4t(ms)(b)Underexcitingfrequencyofl0 Hz80 160 240 320 400f(ms)(d)Under exciting fiquency of20 H2400 0 80 160 240 320 400t(脚)(0 Under exciting freqtency of30 HzFig4 Longitudinal vibration of岫belt in response tO different excitation frequencies,20 kN tensile load”罟罟吨m屯一N)万方数据HOU 1rbufu et al Dynamic characteristics of conveyor belts 6336 Conclusionst(s)(”Shock response:10娴loadFig5 Response of steel cord belts to a shock excitation under different tensile loadsThe following conclusions Call be drawn from theresults of the experimentalinvestigation:l 1 Stress wave propagation speed increases nonlinearly with all increase in tension in the beltsFor thesame tension force,the stress wave propagation speedof the steel cord belt is greater than that of the fabricbelt2)The dynamic performance parameters of thebelts,including the dynamic elastic modulustherheological constant and the viscous damping,varywith tension force3)The natural frequency of the transverse vibrationin the belts slightly increases with the tensile lcad in anonlinear wayThe natural frequency of tlle transverse vibration in the steel cord belt is greater thantllat in the fabric belt41 Tension force on the belt is the main factor thatinfluences longitudinal vibration:The effect of excitation frequency iS smallerThis indicates that moreattention should be paid to controlling tensile lcadingin belt conveyor design5)Steel cord belts have the same response characteristic to shock excitation as an elastic bodyThisindicates that the vibration characteristics of a beIt aremainly determined by the elastic properties of itsframework materialAcknowledgementsThe authors would like to gratefully acknowledgeProfZhang Yong-zhong for his valuable contributionsReferences【l】L卸gebrake F,KIein J,Gronau ONondestructive testing of steelcord conve3for beltsBuIk Solids Handling1 9981 8(4):565569【2】 Bla主cj R,Hardy96ra MModeling of shear sffesses inmultiply belt splicesBulk Solids Handling,2003,23(4):234_-241 。【3】Hou Y F,Huang M,Zhang Y ZDynamic Performanceand Control Technology of Belt Conyeyor Beijing:Coalindustry Press,2004(In Chinese)万方数据Dynamic characteristics of conveyor belts作者: HOU You-fu, MENG Qing-rui作者单位: School of Mechanical and Electrical Engineering, China University of Mining &Technology, Xuzhou, Jiangsu 221116, China刊名: 中国矿业大学学报(英文版)英文刊名: JOURNAL OF CHINA UNIVERSITY OF MINING & TECHNOLOGY年,卷(期): 2008,18(4)引用次数: 0次参考文献(3条)1.Langebrake E.Klein J.Gronau O Non-destructive testing of steel-cord conveyor belts 1998(4)2.Bla(z)ej R.Hardygra M Modeling of shear stresses in multiply belt splices 2003(4)3.Hou Y E.Huang M.Zhang Y Z Dynamic Performance and Control Technology of Belt Conveyor 2004相似文献(10条)1.外文会议 Kaldyumov. N. A.Kalihman. L. Ya.Kalihman. D. M.Polushkin. A. V.Nahov. S. F. TECHNIQUE AND DEVICES FOR EXPERIMENTAL INVESTIGATION OF LINEAR ACCELEROMETER DYNAMIC CHARACTERISTICSIn our paper we discuss the technique and devices for measuring dynamic characteristics of linear accelerometers which areapplicable to utilization at the manufacturing plants where accelerometers are being produced.2.外文会议 Kaldyumov N.A.Kalihman L.Ya.Kalihman D.M.Polushkin A.V.Nahov S.F.Scientific Councilof the Russian Academy of Sciences on the Problems of Motion Control and Navigation(RU);International Public Association-Academy of Navigation and Motion Control(ANMC); American Instituteof Aeronautics and Astronautics(AIAA); TECHNIQUE AND DEVICES FOR EXPERIMENTAL INVESTIGATION OFLINEAR ACCELEROMETER DYNAMIC CHARACTERISTICS In our paper we discuss the technique and devices for measuring dynamic characteristics of linear accelerometers which areapplicable to utilization at the manufacturing plants where accelerometers are being produced.3.外文期刊 Berthelot. JM.Sefrani. Y Damping analysis of unidirectional glass fiber composites withinterleaved viscoelastic layers: Experimental investigation and discussion The article investigates the damping of unidirectional glass fiber composites with a single or two interleaved viscoelasticlayers. The experimental damping characteristics are derived from flexural vibrations of cantilever beams as a function of the fiberorientation. The experimental results are analyzed considering the modeling developed in a previous article, Berthelot, J.-M. DampingAnalysis of Orthotropic Composites with Interleaved Viscoelastic Layers Modelling, Journal of Composite Materials (in press). Theanalysis considers the variations of Youngs modulus and damping of viscoelastic layers with the frequency. Finally, the articlepresents the effects of Youngs modulus and the damping of a viscoelastic layer interleaved in the middle plane of unidirectionallaminate. The results are also reported for the case of external viscoelastic layers.4.外文期刊 Ji BH.Wang LT.Yuan Q.Meng QJ.Liu DY.Zhang GH. Experimental investigation of thedynamic characteristics of the damped blade The test facility and measurement system for the investigation of the dynamic characteristics of a damped blade are described.The test results are analyzed, and some important conclusions are drawn. It is found that dry friction between the dampers(or betweendamper and blade) is a very effective means of reducing the vibration of a blade. The resonance frequency, the response amplitude andthe relative damping ratio can all be influenced by dry friction. High harmonic waves on the response ofthe blade which are caused bydry friction are observed in the test. However, the wave response of the damped blade is still basically harmonic. The normal forceacting on the rub surfaces of the damped blade will influence the dynamic characteristics of the blade. Since the damped blade systemis no
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