WO2017152670A1 - 一种刮板输送机链条张力估算方法 - Google Patents

一种刮板输送机链条张力估算方法 Download PDF

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WO2017152670A1
WO2017152670A1 PCT/CN2016/108402 CN2016108402W WO2017152670A1 WO 2017152670 A1 WO2017152670 A1 WO 2017152670A1 CN 2016108402 W CN2016108402 W CN 2016108402W WO 2017152670 A1 WO2017152670 A1 WO 2017152670A1
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chain
tension
scraper
scraper conveyor
weak coupling
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PCT/CN2016/108402
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English (en)
French (fr)
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朱真才
李伟
张行
江帆
周公博
彭玉兴
曹国华
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中国矿业大学
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Priority to AU2016396708A priority Critical patent/AU2016396708B2/en
Priority to US15/548,126 priority patent/US10422709B2/en
Priority to CA2986169A priority patent/CA2986169C/en
Publication of WO2017152670A1 publication Critical patent/WO2017152670A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/047—Specific indicating or recording arrangements, e.g. for remote indication, for indicating overload or underload
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
    • G01L5/101—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using sensors inserted into the flexible member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
    • B65G19/18—Details
    • B65G19/22—Impellers, e.g. push-plates, scrapers; Guiding means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
    • B65G19/18—Details
    • B65G19/22—Impellers, e.g. push-plates, scrapers; Guiding means therefor
    • B65G19/24—Attachment of impellers to traction element

Definitions

  • the invention relates to a method for estimating the tension of a chain, in particular to a method for estimating the tension of a chain of a scraper conveyor.
  • the action of the scraper conveyor in the fully mechanized mining face mainly includes the sprocket chain drive and the middle slot push-slip.
  • the scraper conveyor chain is subjected to various loads such as tension, self-gravity, coal-loading force and frictional resistance.
  • the scraper conveyor chain is highly susceptible to the straightness of the scraper conveyor and the degree of undulation of the ground, causing failures such as chain scission, chain scission and chain scission.
  • the running environment of the scraper conveyor is bad, the chain meshes with the sprocket and moves continuously in the middle slot.
  • the tension of the chain is constantly affected by external factors.
  • the excessive tension, too small and uneven distribution of the chain are the direct cause of the chain failure.
  • the object of the present invention is to provide a simple, efficient and practical method for estimating the tension of a conveyor belt of a scraper conveyor, which solves the problem that the tension of the chain is affected by external factors, the tension of the chain is too large, too small and unevenly distributed. problem.
  • the strain sensor is disposed in the horizontal chain groove and the vertical chain groove of the plurality of blade conveyor blades, and is installed at the same position on the plurality of blade conveyor blades.
  • the surface of the scraper conveyor is provided with a device installation slot, and the installation slot is internally provided with a data acquisition card, an A/D conversion module, a wireless transmission module and a power module; the strain sensor data signal is wirelessly transmitted, and data compression is used.
  • the method reduces the amount of data and designs a transport protocol to shorten the transmission delay.
  • the scraper conveyor chain meshes with the sprocket and continuously moves on the central groove, and the tension also changes with the load in real time. It is difficult to directly measure the tension of the entire chain, and the strain sensor is set. On a plurality of scraper conveyor scrapers, the tension of the weak coupling point between the scraper and the chain is measured, and the tension of the entire chain is estimated by the tension measurement of the limited position of the chain.
  • the problem of the invention is solved by solving the problem that the chain tension is affected by external factors, the chain tension is too large, too small, and the distribution is uneven.
  • Figure 1 is a schematic view showing the installation of the scraper conveyor scraper assembly of the present invention.
  • FIG. 2 is a schematic view showing the installation of the strain sensor of the present invention.
  • Figure 3 is a schematic view showing the installation of the lower platen strain sensor of the present invention.
  • FIG. 4 is a schematic view showing the installation of the upper squeegee strain sensor of the present invention.
  • FIG. 5 is a schematic diagram of wireless transmission of data signals according to the present invention.
  • a method for estimating the tension of a conveyor belt of a scraper conveyor the steps of which are as follows:
  • the strain sensor is disposed in the horizontal chain groove and the vertical chain groove of the plurality of blade conveyor blades, and is installed at the same position on the plurality of blade conveyor blades.
  • the surface of the scraper conveyor is provided with a device installation slot, and the installation slot is internally provided with a data acquisition card, an A/D conversion module, a wireless transmission module and a power module; the strain sensor data signal is wirelessly transmitted, and data compression is used.
  • the method reduces the amount of data and designs a reliable transmission protocol to shorten the transmission delay.
  • Embodiment 1 As shown in FIG. 1 and FIG. 2, the scraper conveyor scraper is composed of a scraper conveyor upper scraper 1 and a scraper conveyor lower presser plate 2, and the upper scraper and the lower pressurizing plate pass through the fixed boss. 12 and the fixing groove 13 are integrally connected; the scraper conveyor chain comprises a vertical chain 3 and a transverse chain 4, the vertical chain 3 is in contact with the squeegee through the vertical chain shackle 11, and the horizontal chain 4 is in contact with the squeegee through the horizontal chain groove 9.
  • the scraper conveyor scraper and the scraper conveyor chain are connected as a whole by positioning bolts based on the positioning holes 5.
  • the strain sensor is disposed in a plurality of scraper conveyor horizontal chain patch slots and a vertical chain patch slot 10, and is installed in the same position on a plurality of scraper conveyor scrapers;
  • the horizontal chain patch slot includes an upper scraper
  • the vertical chain patch slot 10 is composed of an upper scraper vertical patch slot 101 and a lower presser vertical patch patch slot 102, the lead slot 7 and the lead hole 8 for strain sensor wiring;
  • the surface of the plurality of scraper conveyor scrapers is provided with a device mounting groove 6, and the device mounting groove is internally provided.
  • the data acquisition card, the A/D conversion module, the wireless transmission module and the power module are disposed; the data acquisition card is used to collect the strain sensor data signal, and the A/D conversion module converts the collected sensor signal into a digital signal; the wireless transmission The module is used for wireless signal transmission, the wireless receiving module receives the wireless signal and transmits the data to the data control center, and further processes the data information; the power module is used for powering the device; and the wireless transmission signal reduces data through data compression and design transmission protocol. Volume and shorten the transmission delay.
  • a method for estimating the tension of a conveyor belt of a scraper conveyor the specific steps of which are as follows:

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Control Of Conveyors (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

一种刮板输送机链条张力估算方法，该方法在若干刮板输送机刮板上嵌入应变传感器，测量刮板和链条之间弱耦合点的张力，将采集到的传感器信号通过A/D转换单元进行数据信号转换，经无线发送模块作用传至数据控制中心，数据控制中心基于弱耦合点张力数据信息进一步处理，建立链条张力分布模型，实现刮板输送机链条的张力估算。所述方法简单易行、高效实用，通过链条有限位置的张力测量，完成整条持续移动链条的张力估算。刮板输送机链条与链轮啮合并在中部槽上不断移动，其张力也随载荷实时变化，将应变传感器设置在刮板上，测量刮板和链条之间弱耦合点的张力,通过对链条有限位置的张力测量完成对整条链条张力的估算。

Description

一种刮板输送机链条张力估算方法 技术领域
本发明涉及一种链条张力估算方法，特别是一种刮板输送机链条张力估算方法。
背景技术
综采工作面刮板输送机动作主要包括链轮链条传动和中部槽推溜，工作过程中刮板输送机链条受到张紧力、自身重力、载煤力以及摩擦阻力等多种载荷共同作用。此外，作为刮板输送机最易发生故障的部件之一，刮板输送机链条极易受到刮板输送机直线度和地面的起伏程度影响，发生断链、跳链和掉链等故障。
刮板输送机运行环境恶劣，链条与链轮啮合并在中部槽上不断移动，链条张力受外界因素影响不断变化，链条张力过大、过小及分布不均是导致链条故障的直接原因。
发明内容
本发明的目的是要提供一种简单易行、高效实用的刮板输送机链条张力估算方法，解决链条张力受外界因素影响的变化，链条张力过大、过小及分布不均而产生的故障问题。
本发明的目的是这样实现的：该链条张力估算方法,步骤如下：
(1)根据链条张力与载荷、链速的变化规律，通过相关性分析，明确链条各点张力的耦合关系，以刮板与链条的接触点作为弱耦合点,构建弱耦合点集合；
(2)在若干刮板输送机刮板上嵌入应变传感器，通过测量刮板与链条之间接触点受力，获得相应弱耦合点的张力，运用插值方法，描述弱耦合点之间链条张力，建立由弱耦合点构成的链条张力分布离散模型，并基于实时测量的链条弱耦合点张力，实现对整个链条张力分布的估算；
(3)刮板与链条的接触点相对移动，受实时载荷分布与链速变化因素影响，基于自适应卡尔曼滤波器进一步优化链条实时张力估算结果，通过数据控制中心实现对链条张力的预测。
所述应变传感器设置在若干刮板输送机刮板的横链槽和立链槽内，且在若干刮板输送机刮板上安装位置相同。
所述若干刮板输送机刮板表面设置有设备安装槽，安装槽内部设置有数据采集卡、A/D转换模块、无线发送模块和电源模块；应变传感器数据信号采用无线传输方式，运用数据压缩方法减少数据量，并设计传输协议缩短传输延迟。
有益效果及优点，由于采用了上述方案，刮板输送机链条与链轮啮合并在中部槽上不断移动，其张力也随载荷实时变化，直接测量整条链条的张力难以实现，将应变传感器设置在若干刮板输送机刮板上，测量刮板和链条之间弱耦合点的张力,通过对链条有限位置的张力测量完成对整条链条张力的估算。
解决了链条张力受外界因素影响的变化，链条张力过大、过小及分布不均而产生的故障问题，达到了本发明的目的。
附图说明：
图1为本发明的刮板输送机刮板组件安装示意图。
图2为本发明的应变传感器安装示意图。
图3为本发明的下压板应变传感器安装示意图。
图4为本发明的上刮板应变传感器安装示意图。
图5为本发明的数据信号无线传输原理图。
图中：1、刮板输送机上刮板；2、刮板输送机下压板；3、立链；4、横链；5、定位孔；6、设备安装槽；7、引线槽；8、引线孔；9、横链槽；91、上刮板横链贴片槽；92、下压板横链贴片槽；10、立链贴片槽；101、上刮板立链贴片槽；102、下压板立链贴片槽；11、立链链窝；12、固定凸台；13、固定槽。
具体实施方式
一种刮板输送机链条张力估算方法,其步骤如下：
(1)根据链条张力与载荷、链速的变化规律，通过相关性分析，明确链条各点张力的耦合关系，以刮板与链条的接触点作为弱耦合点,构建弱耦合点集合；
(2)在若干刮板输送机刮板上嵌入应变传感器，通过测量刮板与链条之间接触点受力，获得相应弱耦合点的张力，运用插值方法，描述弱耦合点之间链条张力，建立由弱耦合点构成的链条张力分布离散模型，并基于实时测量的链条弱耦合点张力，实现对整个链条张力分布的估算；
(3)刮板与链条的接触点相对移动，受实时载荷分布与链速变化因素影响，基于自适应卡尔曼滤波器进一步优化链条实时张力估算结果，通过数据控制中心实现对链条张力的预测。
所述应变传感器设置在若干刮板输送机刮板的横链槽和立链槽内，且在若干刮板输送机刮板上安装位置相同。
所述若干刮板输送机刮板表面设置有设备安装槽，安装槽内部设置有数据采集卡、A/D转换模块、无线发送模块和电源模块；应变传感器数据信号采用无线传输方式，运用数据压缩方法减少数据量，并设计可靠的传输协议缩短传输延迟。
下面结合附图对本发明做更进一步的解释。
实施例1：如图1、2所示，所述刮板输送机刮板由刮板输送机上刮板1和刮板输送机下压板2两部分组成，上刮板和下压板通过固定凸台12和固定槽13连接成一个整体；刮板输送机链条包括立链3和横链4，立链3通过立链链窝11与刮板接触，横链4通过横链槽9与刮板接触；所述刮板输送机刮板和刮板输送机链条基于定位孔5通过定位螺栓连接成一个整体。
所述应变传感器设置在若干刮板输送机横链贴片槽和立链贴片槽10内，且在若干刮板输送机刮板上安装位置相同；所述横链贴片槽包括上刮板横链贴片槽91和下压板横链贴片槽92，立链贴片槽10由上刮板立链贴片槽101和下压板立链贴片槽102共同组成，引线槽7和引线孔8用于应变传感器布线；
如图3所示，所述若干刮板输送机刮板表面设置有设备安装槽6，设备安装槽内部设 置有数据采集卡、A/D转换模块、无线发送模块和电源模块；数据采集卡用于采集应变传感器数据信号，A/D转换模块将采集到的传感器信号转换成数字信号；所述无线发送模块用于无线信号传输，无线接收模块接收无线信号并将数据传输至数据控制中心，对数据信息进一步处理；电源模块用于设备供电；所述无线传输信号，通过数据压缩和设计传输协议减少数据量并缩短传输延迟。
一种刮板输送机链条张力估算方法,其具体步骤如下：
(1)根据链条张力与载荷、链速的变化规律，通过相关性分析，明确链条各点张力的耦合关系，以刮板与链条的接触点作为弱耦合点,构建弱耦合点集合；
(2)在若干刮板输送机刮板上嵌入应变传感器，通过测量刮板与链条之间接触点受力，可以获得相应弱耦合点的张力，运用插值等方法，描述弱耦合点之间链条张力，建立由弱耦合点构成的链条张力分布离散模型，并基于实时测量的链条弱耦合点张力，实现对整个链条张力分布的估算；
(3)刮板与链条的接触点相对移动，易受实时载荷分布与链速变化等因素影响，基于自适应卡尔曼滤波器进一步优化链条实时张力估算结果，通过数据控制中心实现对链条张力的预测。

Claims (3)

  1. 一种刮板输送机链条张力估算方法，其特征是：该链条张力估算方法,步骤如下：
    (1)根据链条张力与载荷、链速的变化规律，通过相关性分析，明确链条各点张力的耦合关系，以刮板与链条的接触点作为弱耦合点,构建弱耦合点集合；
    (2)在若干刮板输送机刮板上嵌入应变传感器，通过测量刮板与链条之间接触点受力，获得相应弱耦合点的张力，运用插值方法，描述弱耦合点之间链条张力，建立由弱耦合点构成的链条张力分布离散模型，并基于实时测量的链条弱耦合点张力，实现对整个链条张力分布的估算；
    (3)刮板与链条的接触点相对移动，受实时载荷分布与链速变化因素影响，基于自适应卡尔曼滤波器进一步优化链条实时张力估算结果，通过数据控制中心实现对链条张力的预测。
  2. 根据权利要求1所述的一种刮板输送机链条张力估算方法，其特征是：所述应变传感器设置在若干刮板输送机刮板的横链槽和立链槽内，且在若干刮板输送机刮板上安装位置相同。
  3. 根据权利要求1所述的一种刮板输送机链条张力估算方法，其特征是：所述若干刮板输送机刮板表面设置有设备安装槽，安装槽内部设置有数据采集卡、A/D转换模块、无线发送模块和电源模块；应变传感器数据信号采用无线传输方式，运用数据压缩方法减少数据量，并设计传输协议缩短传输延迟。
PCT/CN2016/108402 2016-03-07 2016-12-02 一种刮板输送机链条张力估算方法 WO2017152670A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2016396708A AU2016396708B2 (en) 2016-03-07 2016-12-02 Method for estimating tension of chain of scraper conveyor
US15/548,126 US10422709B2 (en) 2016-03-07 2016-12-02 Method of estimating tension of chain of scraper conveyor
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