苏ICP备112451047180号-6
输送带
十八世纪末尾发明的输送机已经被很多行业所广泛应用。例如化工，港口，冶金第三次工业革命尤其是在他之后，输送机的新时代已经到来了。今天,无论从吞吐量、距离测量、经济效益等各个方面,它可以与火车,运输汽车相抗衡,成为各国争相发展的行业。带式输送机输送材料结构简单,吞吐量大,范围广泛,长远来看,加载方便,可靠性高,运费低,自动化程度高,等它有明显的优点,是国民经济中不可或缺的关键设备。近年来,随着中国工业现代化的快速发展,综合机械化采煤技术的推广应用为煤矿生产和体积增加,和长途的需求,大容量、高功率传输设备越来越大。单台机器的总功率5000千瓦、传输长度达到10多公里,超过5000 t / h的交通量,5 - 6米/秒以上的运行速度已经应用于煤矿带式输送机。由于带式输送机她的结构非常紧凑效率的传动也是很高，在时间上可以使用非常长能够非常平稳的运行密封性能非常好正式由于她的占用空间小他能使用各种各样的工作环境。他在我国的生产建设中必然不可缺失。由于互联网的应用他的、制造、销售周期大大缩短,其更具竞争力更加大。
Conveyor belt
At the end of the eighteenth century invention of conveyor has been widely used by many industries. Such as chemical industry, port, metallurgy especially after his third industrial revolution, a new era of conveyor has come. Throughput, distance measurement, today, no matter from many aspects, such as economic benefit, it can with the train, transport vehicles, as countries are scrambling to develop industry. Conveyor belt conveyor materials, simple structure, large throughput, range, in the long run, loading convenient, high reliability, low freight, high degree of automation, etc. It has obvious advantages, is an indispensable key equipment in the national economy. In recent years, with the rapid development of China's industrial modernization, extension and application of comprehensive mechanized coal mining technology for coal mine production and increase volume, and the demand of the long distance, large capacity and high power transmission equipment is bigger and bigger. Single machine the total power of 5000 kw, transmission length reaches more than 10 kilometers, the traffic volume of more than 5000 t/h, more than 5-6 m/s speed has been used in coal mine belt conveyor. Due to the structure of the belt conveyor her very compact transmission efficiency is very high, can use in time is very long running very smooth sealing performance is very good to formal due to her to take up the space is little, he can use all kinds of working environment. He cannot be missing in the production of construction in China. Because of the Internet application of his, manufacturing, sales cycle is shorten, the more competitive is more big
输送带的PLC控制系统的实现功能
1、2、按下开始按钮SB1,电动机,传动皮带移动1、2。SB2按下停止按钮,电机停止运行,传送带停止。按下停止按钮SB3、设备操作过程后停止。
转运点的工件时,传送带1停止,气缸1行动,工件在传送带2。类型气缸采用自动寻的,当到达指定地点SQ2测试气缸,气缸1重置。
当工件转运点B,SQ3使传送带2站,2缸运动,工件在传送带上。3。类型气缸采用自动寻的,当SQ4测试气缸2到达指定地点,气缸2复位。
当工件转运点C,SQ5传送带三站,3缸运动,工件载体。当SQ6测试气缸3到指定位置,气缸3复位。
手动开关SA1 SA1自动时,根据上面的动作完成动作,一直循环,当SA1手动时,您可以手动按钮1,2,和3控制电机和扭转,控制气缸的1、2、3和收缩。
The realization of the conveyor belt of the PLC control system
1, 2, press the start button SB1, motor, transmission belt move 1, 2. SB2 press the stop button, the motor stops, the conveyor belt to stop. Press the stop button SB3, equipment operation after the stop.
1 stop transshipment point of the workpiece, the conveyor belt, cylinder 1 action, workpiece in conveyor belt, 2. Type cylinder adopts the homing, when reach the specified location for SQ2 test cylinder, cylinder 1 reset.
When the workpiece transshipment point B, SQ3 make conveyor belt station 2, 2 cylinder movement, the workpiece on the conveyor belt. 3. Type cylinder adopts the homing, when arrive at the appointed place SQ4 test cylinder 2, cylinder 2 reset.
When the workpiece transshipment point C, three station SQ5 conveyor belt, 3 cylinder movement, the workpiece carrier. When SQ6 test cylinder to the specified location, 3 cylinder 3 reset.
Manual switch SA1 SA1 automatically, according to the above action complete action, loops, when the SA1 manually, you can manually button 1, 2, and 3 control motor and reversing, control of cylinder 1, 2, 3, and contraction.
中央处理单元(CPU)是PLC的控制中心。它根据PLC系统的功能程序接收和存储用户程序和数据类型的程序员,检查电源、内存、I / O和警告定时器状态和诊断用户程序中的语法错误。PLC在操作时,第一个它收到扫描的形式领域每个输入设备的状态和数据,内存存储系统软件称为系统程序内存,内存存储应用软件称为用户程序存储器。(1)系统程序内存内存存储系统(软件)项目。由PLC系统程序,开发人员,这是PLC的性能的关键。PLC系统程序用于管理和协调各个部分的工作,翻译,解释,用户程序,故障诊断等。(2)用户程序内存的内存存储用户程序(应用程序)。用户程序是用户解决实际问题和基于PLC的程序教学系统,它通过程序员输入,CPU在用户的记忆。为了方便调试程序,修改、扩展,完美,RAM内存的使用。当前值在CPU逻辑操作应在任何时候阅读,更新内容,所以变量也使用RAM内存。现在用户程序内存和变量内存通常使用低功耗CMOS RAM和锂电池供电的电动技术,以提高操作的可靠性。通常PLC产品信息在内部内存容量,是特定于用户程序内存,和字(16 /字)为单位代表内存的容量。(3)输入和输出单元的输入单元被指控PLC和工业生产站点设备连接到输入界面,是一个桥梁领域信号到PLC。输入接口接收指令元素,检测元件的主要功能。接口电路内部过滤、传输和信号锁电路。每个PLC制造商提供了各种形式的I / O组件或模块供用户选择。输出单元PLC和现场设备之间的连接组件,负责输出信号来控制对象的输出接口。输出接口电路通常由微机输出接口和功率放大电路。输出接口电路输出锁存器的状态,显示、输出电平传输终端,都有不同类型的输出组件或模块使用。
The central processing unit (CPU) is the control center of PLC. It according to the function of the PLC system program to receive and store the user program and data types of programmers, check the power supply, memory and I/O and warn the timer state and diagnose syntax error in the user program. PLC in operation, the first it receive scan of form fields and data of the state of each input devices, memory storage system software, called system program memory, memory storage application software called user program memory. (1) the system program memory memory storage system (software) project. By PLC system program, the developer, it is the key to the performance of the PLC. PLC system program is used to manage and coordinate the efforts of all parts, translation, explanation, user program, fault diagnosis, etc. (2) the user program memory memory storage user program (application). The user program is the user to solve practical problems and programmed instruction system based on PLC, it through the programmer input, the CPU in the user's memory. In order to facilitate debugging programs, modification, extension, perfect, RAM memory usage. The current value in CPU logic operations should be read at any time, update the content, so the variable also use RAM memory. Now the user program memory and variables used usually low-power CMOS RAM and lithium batteries of electric technology, in order to improve the reliability of the operation. Usually PLC product information in the internal memory capacity, it is specific to the user program memory, and word (16)/word for the unit on behalf of memory capacity. (3) the input and output unit of input unit was accused of PLC and industrial production site equipment connected to the input interface, is a bridge field signal to the PLC. Input interface receives instruction elements, the main functions of the detecting element. Interface circuit inside the filter, lock circuit and signal transmission. Each PLC manufacturers provide various forms of I/O components or modules for the user to choose from. Output unit connection between PLC and the scene equipment components, responsible for the output signal to control the output interface of the object. Output interface circuits are usually made of microcomputer output interface and power amplifier circuit. The state of the output interface circuit output latch, display and output level transport terminals, there are different types of output component or module.
执行系统主要包括汽缸的一部分。
将压缩空气的压力缸是气力输送可以转换为机械能的气动执行器
根据工作需要的大小来确定活塞杆上的推力和拉力。为了选择输出力应缸缸时稍微津贴。如果选择了小缸直径,输出功率是不够的,缸不工作,但直径太大,该设备不仅重,成本高,天然气消费增长同时,造成能源浪费。在夹具设计中,应尽可能的权力机制,为了减少气缸的大小。缸下面是气缸的工作:理论计算公式F:圆筒理论(公斤)F的输出:效率是85%的输出力(公斤)——(F)= F(85%)D:气缸直径(毫米)P:工作压力(公斤/ cm2):气缸直径340毫米,3公斤/厘米2的工作压力,其理论输出力?芽的输出力是多少?连接P、D和找出点F,F”:F = 2800公斤;F = 2300公斤选择缸孔在工程设计中,可以根据理论的使用压力和推力或拉力的大小从经验发现在表1 - 1。例子:他们使用汽缸压力5公斤/厘米2,推出了气缸的推力为132公斤,效率是85%(气缸)问:如何选择缸膛吗?低推力132公斤气缸的缸效率85%,气缸可以理论计算推力的F = F / 85% = 155(公斤)低压用5公斤/厘米2缸推力的理论,发现选择63缸的直径可以满足使用要求。
Perform system mainly includes the part of the cylinder.
The compressed air pressure cylinder is pneumatic conveying can be converted into mechanical energy of the pneumatic actuators
According to the work needs to determine the size of the push and pull on the piston rod. In order to choose the output power is to be a little allowance cylinder cylinder. If you choose the small cylinder diameter, the output power is not enough, the cylinder does not work, but the diameter is too big, the equipment is not only heavy, cost is high, the natural gas consumption growth at the same time, cause energy waste. In fixture design, should as far as possible the power mechanism, in order to reduce the size of the cylinder. Cylinder is a cylinder work below: the theoretical calculation formula F: the output of the cylinder theory (kg) F: efficiency is 85% of output force (kg) - (F) = F (85%) D: cylinder diameter (mm) P: working pressure (kg/cm2) : the cylinder diameter of 340 mm, 3 kg/cm 2 working pressure, the theory of output power? How much is the bud of the output force? Connect P, D, and find out the point F, F ": F = 2800 kg; F = 2300 kg choose cylinder hole in engineering design, and can be used according to the theory of stress and the size of the push or pull from experience found in table 1-1. Example: they use the cylinder pressure 5 kg/cm2, introduced a cylinder thrust of 132 kilograms, is 85% efficient (cylinder) q: how to choose the cylinder bore? Low thrust 132 kg cylinder cylinder efficiency is 85%, the cylinder can be calculated thrust F = F / 85% = 155 (kg) of low pressure with 5 kg/cm2 cylinder thrust theory, found that the diameter of the choice of 63 cylinder can satisfy the use requirement.
机电一体化也被称为机械和电子产品,英语叫机电一体化,它是由英语上半年力学和电子在第二部分电子和组装。机电一体化的迅猛发展被我们广泛的熟之和应用，并广泛的应用。与计算机技术的迅速发展和广泛应用,机电一体化技术获得前所未有的发展。今天,机电一体化技术是机械技术和微电子技术,他密切相关者人性的智力使冰冷的机器变为炙手可热。
机械本体的组成部分有框架，机械传动，机械连接等等他是机电一体化最基本的东西机电一体化技术与纯机械产物相比之下，他支持系统的运动和其他功能运转的作用，他提高了系统的功能,并能适应几何尺寸,等,这是高效、多功能、可靠、节能的特点,小,轻,漂亮。2。检测传感器检测传感器部分包括各种传感器及其信号检测电路, 4。致动器致动器根据指令的电子控制单元的功能是驱动机械部件的运动。执行机构是移动部件,通常由电力驱动,气动和液压传动等几种方式。5。能源供应电源供电是机电一体化产品,其效果是按照系统要求控制机械系统提供能源和电力系统正常运行。
Mechanical and electrical integration, also known as mechanical and electrical products, English name is mechanical and electrical integration, it is by the English in the first half of mechanics and electronic in the second part and assembly. The rapid development of electromechanical integration is the sum of our wide range of practice application, and a wide range of applications. With the rapid development of computer technology and the wide application of mechatronics technology to obtain the unprecedented development. Today, mechanical and electrical integration technology is mechanical technology and microelectronics technology, his cold machine close to human's intelligence into hot.
1. Part of the body frame, mechanical transmission, mechanical connection etc. He is the most basic things mechanical and electrical integration of mechanical and electrical integration technology and the purely mechanical product, by contrast, his movement and other functional operation support system, he raised the system function, and can adapt to the geometry size, etc., this is the characteristics of high efficiency, multifunctional, reliable, energy saving, small, light, beautiful. 2. Detection sensor detection sensor consists of various sensors and its signal detection circuit, 4. Actuator actuator according to the instructions of the function of the electronic control unit is driven mechanical parts. Actuator is moving parts, usually by electric drive, pneumatic and hydraulic transmission and other several ways. 5. Energy supply power supply is electromechanical integration products, the effect is in accordance with the requirements for system control mechanical systems provide energy and normal operation of power system
国外技术现状的带式输送机带式输送机技术的发展很快,主要表现在两个方面:一方面是带式输送机的功能多样化,扩大应用范围,如高倾角带式输送机、管状带式输送机,空间将带式输送机等各种模型;另一方面是带式输送机技术和设备有很大发展,特别是长距离、大容量、高速、大型带式输送机已成为发展的主要方向,其核心技术是开发和应用在带式输送机动态分析和监测技术,提高带式输送机的运行性能和可靠性。目前,用于煤矿带式输送机已达到的主要技术指标如表1所示,其关键技术和设备具有以下特点:(1)大型设备。其主要技术参数和设备是实现大规模发展,为了满足年产量超过300 ~ 500万t高效、集约生产的需要。2应用程序动态分析技术和机电一体化,电脑显示器,和其他高新技术,使用大功率软启动和自动张紧技术,动态监测和控制输送机大大地减少了传送带的动态张力,设备运行性能好,传输效率高。(3)使用多机驱动和中间驱动程序和权力平衡,传输数据的操作,如技术,使输送机运行独立的长度被限制在理论上,并确保输送系统的普遍性和可交换性设备和单元驱动的可靠性。(4)新的关键部件,高可靠性技术。包括春秋国旅等各种先进的大功率传动和调速设备,高生活高速辊、滚筒自动清洁装置,高效的存储设备和快速移动的尾巴。英国等摩擦搅拌焊生产FSW1200 /(2 ~ 3)×400(600)沿槽面带式输送机采用微分流体粘度或变频调速装置,运输能力3000 t / h以上,尾巴和新的复制机(如喜悦公司S500E)配套,可以自动与面对以来通过快速移动,减少人工操作,生产效率高。在国外,带式输送机的主要技术指标选项卡。1带式输送机的主要技术参数在海外外国300 ~ 500万t /生产效率高我的主要参数沿槽可伸缩带式输送机的小巷和强大的带式输送机斜井固定距离/ 2000 2000 ~ 3000 st13带速/ 3.5玛格丽特·斯佩林斯- 1 ~ 4 4 ~ 5,8吞吐量/托德·哈珀- 1,2500 ~ 2500年,3000 ~ 4000年开车总功率/ kW 1200 ~ 2000,1500 ~ 1500年,2,10100年最大的中国制造业现状国内带式输送机技术www.qdyongming.com更多品种、类型的带式输送机。在“五年”期间,通过国家龙“日产一万吨完全机械化设备”项目的实施,带式输送机的技术水平已经大大提高,高功率的煤矿,长距离带式输送机的关键技术研究和新产品开发已取得了很大的进步。如长途大倾角带式输送机设备,生产效率高的脸网关可伸缩带式输送机等填补了国内空白,并降低带式输送机的关键技术及其主要部件在理论研究和产品开发,成功开发了各种软启动和制动和PLC可编程电子控制装置为核心,驱动系统采用调速型液力耦合器和行星齿轮减速器。目前,煤矿用带式输送机的主要技术特征指标如表2所示。表2国内带式输送机的主要技术指标选项卡。2、带式输送机的主要技术参数在中国网关可伸缩带式输送机的主要参数的小巷和强大的带式输送机斜井固定距离/ 2000 2000 ~ 3000 st13带速/ 3.5玛格丽特·斯佩林斯- 1 ~ 4 4 ~ 5,8吞吐量/托德·哈珀- 1,2500 ~ 2500年,3000 ~ 4000年开车总功率/ kW 1200 ~ 2000,1500 ~ 1500年,1500年
1 abroad technology status quo of the belt conveyor belt conveyor technology development quickly, it is mainly manifested in two aspects: on the one hand is the function of the belt conveyor diversification, application scope enlargement, such as high dip Angle belt conveyor, the tubular belt conveyor, the space turning belt conveyor and so on various models; Itself on the other hand is a belt conveyor technology and the equipment has a great development, especially long distance, large capacity, high speed and large belt conveyor has become the main direction of development, its core technology is the development and application in the dynamic analysis of belt conveyor and monitoring technology, improve the operation performance and reliability of belt conveyor. At present, used in the coal mine belt conveyor has reached the main technical indicators are shown in table 1, its key technology and equipment has the following characteristics: (1) large-scale equipment. Its main technical parameters and equipment are towards large-scale development, in order to meet the annual output of over 300 ~ 5 million t high efficient and intensive production needs. 2 application of dynamic analysis technique and electromechanical integration, computer monitor, and other high and new technology, using high power soft start and automatic tensioning technology, for dynamic monitoring and control, conveyor is greatly reduced the dynamic tension of conveyor belt, equipment operation performance is good, high transport efficiency. (3) using multi-motor drive and intermediate driver and power balance, transmission of data to the operation, such as technology, makes the conveyor run stand-alone length has been restricted in theory, and make sure the universality and interchangeability of the conveying system equipment and the reliability of the unit drive. (4) new key components, high reliability technology. Such as including CST, etc all kinds of advanced high power drive and speed regulation device, high life high-speed roller, self-cleaning device of platen, efficient storage device and quickly move from the tail. Such as the UK FSW production FSW1200 / (2 ~ 3) x 400 (600) face along the trough belt conveyor will adopt the differential fluid viscosity or variable frequency speed regulating device, transport capacity of 3000 t/h or above, its tail and new reproduced machine (such as the joy company S500E) form a complete set, can be automatically with face passes quickly since the move, less artificial operation, high production efficiency. Abroad, main technical index of The belt conveyor Tab. 1 The main technical parameters of belt conveyer in overseas foreign 300 ~ 5 million t/a high production and efficiency mine main parameters along The groove extensible belt conveyor alleys and deviated well fixed distance of powerful belt conveyor/m 2000 ~ 3000 st13 3000 tape speed / 3.5 Margaret spellings - 1 ~ 4 4 ~ 5, up to 8 throughput/Todd Harper - 1, 2500 ~ 2500, 3000 ~ 4000 drive total power/kW 1200 ~ 2000, 1500 ~ 1500, 2, 10100 largest domestic belt conveyor status quo of China's manufacturing technology www.qdyongming.com more varieties, types of belt conveyer. In the "five-year" period, through the national dragon "nissan ten thousand tons of fully mechanized equipment" the implementation of the project, the technical level of belt conveyor has greatly improved, the coal mine with high power, long distance belt conveyor key technology research and new product development has made great progress. Such as long distance of large dip Angle belt conveyor equipment, high production and efficiency face gateway extensible belt conveyor and so on are filled the domestic blank, and reduce the key technology of belt conveyor and its main components in theory research and product development, successfully developed a variety of soft start and brake and programmable electronic control device with PLC as the core, the drive system adopts speed control type hydraulic coupler and planetary gear reducer. At present, the main technical characteristics of the coal mine with belt conveyor indicators as shown in table 2. Table 2 domestic main technical index of The belt conveyor Tab. 2, The main technical parameters of The belt conveyer in China The main parameters of gateway extensible belt conveyor alleys and deviated well fixed distance of powerful belt conveyor/m 2000 ~ 3000 st13 3000 tape speed / 3.5 Margaret spellings - 1 ~ 4 4 ~ 5, up to 8 throughput/Todd Harper - 1, 2500 ~ 2500, 3000 ~ 4000 drive total power/kW 1200 ~ 2000, 1500 ~ 1500, 10100
大型带式输送机的关键核心技术的差距(1)长距离带式输送机的动态分析和监测技术,大功率带式输送机的关键技术是一种动态设计和监控,它的核心技术是大型带式输送机的发展。目前我国与刚性理论分析带式输送机,使计算和设计规范,设计输送带使用高安全系统(通常是在n = 10),远离实际的情况。事实上传送带是粘弹性的身体,长长的带式输送机皮带传动装置,刹车力的动力响应是一个非常复杂的过程,并不能简单地用刚体力学和计算来解释。开发了带式输送机电动机吗
国家设计方法和应用软件,在大型输送机输送机的动态张力动态分析和动态监测,减少输送带的安全系统,大大延长使用寿命,保证输送机的可靠性,这导致大型带式输送机的设计的最高水平(带安全系数n = 5 ~ 6),从而大大降低设备成本的成本特别是传送带输送机。2可靠可控软启动技术和功率平衡和大容量,由于大功率长距离带式输送机多机驱动,必须使用软起动方法减少输送机制动紧张,尤其是当许多电机驱动。为了减少对电网的影响,软启动时由于时间缓慢的启动,控制输送机的起动加速0.3 ~ 0.1米/ s2,解决了皮带和传动皮带皮带速度同步问题和传送带激增现象,减少对组件的影响。由于制造误差和运动特点,开点会出现不平衡的力量,一旦电机功率过度会导致燃烧事故,因此,汽车应该控制之间的力量平衡,并提高平衡精度。家有大量采用调速型液力耦合器实现带式输送机的软启动和功率平衡,解决了长距离带式输送机启动和功率平衡问题和同步问题。但其准确性和可靠性与国外相比有一定的差距。此外,长距离带式输送机与高功率除了请求煤皮带速度,还需要检查皮带带速度,调速型液力耦合器,实现软启动和功率平衡,还需要开发适合于长途无级液压调速装置。当单机功率> 500千瓦,CST可控软启动显示了优越性。由于可控软启动在行星齿轮减速器齿轮环和混合的湿式摩擦离合器(即粘度传输)。通过比例阀和控制系统实现软启动和功率平衡,调节精度可以达到98%以上。但是价格是昂贵的,急需的本地化。3.2技术在带式输送机的性能和参数之间的性能差距在中国不能满足高产高效矿井的需要,特别是沿槽的可伸缩带式输送机关键组件和功能如从尾部移动,有效的存储和张紧装置与国外有很大的差距。
Key core technology of large belt conveyors in the gap (1) dynamic analysis and monitoring technology of long-distance belt conveyor, the key technologies of high-power belt conveyor is a dynamic design and monitoring, it is the core technology in the development of large belt conveyor. At present our country to analyze the belt conveyor with the rigid theory and make the calculation and design specification, design on the conveyor belt use a high security system (typically take around n = 10), are far from the actual situation. In fact conveyor belt is viscoelastic body, its long belt conveyor belt for the driving device, the dynamic response of the brake force is a very complicated process, and cannot be simply explained by mechanics of rigid body and calculation. Have developed belt conveyor motor
State design method and application software, in big conveyor dynamic tension of conveyor dynamic analysis and dynamic monitoring, reduce the safety of the conveyor belt system, greatly extend the service life, ensure the reliability of the conveyor, which contributed to the design of large-scale belt conveyor at the highest level (belt safety coefficient n = 5 ~ 6), and thus greatly reduced the cost of equipment cost especially conveyor belt conveyor. 2 reliable controllable soft start technology and power balance Long and large capacity, long distance because of the large power belt conveyor and multi-motor drive, soft starting method must be used to reduce the conveyer brake tension, especially when many motor driver. In order to reduce the impact on the power grid, when the soft start due time slow start; To control the conveyor starting acceleration is 0.3 ~ 0.1 m/s2, solve the carrying belt and driving belt belt speed synchronization issues and conveyor belt surge phenomenon, reduce the impact on the components. Due to the manufacturing error and the motor characteristics, the power of driving point will appear uneven, once a motor power overshoot can cause burning accident, therefore, the power balance between the motor should be controlled, and improve balance precision. Home has a large number of applying speed control type hydraulic coupler to realize the soft start of belt conveyor and power balance, solves the problems of long distance belt conveyor starting and power balance and synchronization issues. But its accuracy and reliability compared with abroad have a certain gap. In addition, long distance belt conveyer with high power in addition to request a coal belt speed, also need to check belt with a tape speed, speed control type hydraulic coupler while realize the soft start and power balance, but also need to develop suitable for long distance stepless hydraulic speed control device. When single machine power > 500 kW, CST controllable soft start showing the superiority. Due to the controllable soft start is within the planetary gear reducer gear ring and a mix of wet friction clutch (namely viscosity transmission). Through the proportional valve and control system to realize the soft start and power balance, the regulating accuracy can reach above 98%. But the price is expensive, be badly in need of localization. 3.2 technology on the performance gap between performance and parameter of belt conveyor in China cannot meet the need of high yield and efficient mine, especially along the groove of extensible belt conveyor key components and functions such as moving from the tail, efficient storage and tensioning device have great gap with foreign.