WO2012065340A1 - 一种高精度皮带称重装置 - Google Patents

一种高精度皮带称重装置 Download PDF

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Publication number
WO2012065340A1
WO2012065340A1 PCT/CN2010/080551 CN2010080551W WO2012065340A1 WO 2012065340 A1 WO2012065340 A1 WO 2012065340A1 CN 2010080551 W CN2010080551 W CN 2010080551W WO 2012065340 A1 WO2012065340 A1 WO 2012065340A1
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Prior art keywords
belt
scale
weighing
calibration
conveyor
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PCT/CN2010/080551
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English (en)
French (fr)
Inventor
厉达
刘志良
何福胜
张兴国
胡振
张德强
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赛摩电气股份有限公司
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Application filed by 赛摩电气股份有限公司 filed Critical 赛摩电气股份有限公司
Priority to BR112013011995A priority Critical patent/BR112013011995A2/pt
Priority to CA2815398A priority patent/CA2815398C/en
Priority to RU2013127573/28A priority patent/RU2549208C2/ru
Priority to DE112010006017.7T priority patent/DE112010006017B4/de
Priority to AU2010364254A priority patent/AU2010364254B2/en
Publication of WO2012065340A1 publication Critical patent/WO2012065340A1/zh
Priority to US13/865,183 priority patent/US9631970B2/en
Priority to ZA2013/03550A priority patent/ZA201303550B/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/01—Testing or calibrating of weighing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/003—Details; specially adapted accessories
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/006—Special taring or checking devices therefor

Definitions

  • the invention relates to a bulk material weighing device, in particular to a high precision belt weighing device for a belt conveyor.
  • the measurement accuracy of the belt weighing device on the belt conveyor is getting higher and higher, and the reliability and stability of the measurement accuracy are paid more attention.
  • the weighing sensors and weighing control instruments used for belt conveyors for belt conveyor measurement have higher precision, which can reach more than 0.03%.
  • the belt scale is installed on the belt conveyor, and its precision is only 1%---0.5%.
  • the stability of the precision is often not easy to guarantee.
  • the main reason is that the belt conveyor changes the belt tension with the amount of material on the belt conveyor. The influence of various factors such as vibration and the inability to perform calibration in a timely manner.
  • the calibration methods of the existing belt scales include hanging weight calibration, chain code calibration, cycle chain code calibration, electronic calibration, material calibration, and the material calibration can truly reflect the real condition of the material operation, the calibration reliability is high, and other calibration methods. Both are analog calibration, which can not truly reflect the belt tension condition when the whole length of the conveyor is covered with materials. The calibration error is large and can not meet the actual demand.
  • the national standard required for material calibration requires at least 2% belt conveyor. If the conveyor volume of the belt conveyor is 5,000 tons / hour, then the amount of material required for material calibration will reach 100 tons. With the increasing number of large-flow conveyors (10,000 tons/hour or more), the amount of material required for material calibration is increasing, and the equipment for weighing materials is becoming larger.
  • the high-precision belt weighing device of the invention comprises a first belt scale frame, a second belt scale frame and a reclaimer mounted on the belt conveyor, and is arranged between the first belt scale frame and the second belt scale frame There is a buffer roller set, a volume balance bucket is arranged above the buffer roller set, a transfer machine connected with the reclaimer is arranged above the volume balance bucket, and a speed detector is arranged on the belt conveyor, and the forward direction of the buffer roller set is provided.
  • the invention adopts a belt weighing device integrating weighing and material calibration, adopts a starting point detector, two belt scale frames and a volume weighing bucket, and uses a weighing control instrument to realize online automatic collection and less material replacement.
  • the material is subjected to belt scale precision comparison and calibration to achieve high-precision weighing.
  • the weighing control instrument establishes the belt self-weight calibration starting point through the starting point detector, and the calibration starting point automatically zeros the belt self-weight of the belt moving length larger than the volume weighing bucket to accommodate the standard material during the conveying time, ensuring the weighing.
  • the weight control instrument is calibrating the amount of material to be conveyed, the belt's own weight is zero during the length of the belt.
  • Figure 1 is a schematic view showing the structure of the apparatus of the present invention
  • Figure 2 is a schematic view showing the structure of the reclaimer of the present invention.
  • Figure 3 is a schematic view showing the installation of the head of the reclaimer of the present invention.
  • the high-precision belt weighing device of the invention mainly comprises a first belt scale frame 1, a buffer roller group 2, a volume scale bucket 3, a second belt scale frame 4, a transfer machine 5, a reclaimer 6, and a starting point detector 7.
  • the weighing control instrument 8 and the speed measuring device 11 are configured.
  • the first belt scale frame 1 and the second belt scale frame 4 can adopt a single roller scale frame, a double roller scale frame, or a multi-roller scale frame; the start point detector 7 can be non-contact type, Contact detectors can be used.
  • the multi-roller type first belt scale frame 1 and the second belt scale frame 4 are mounted on the belt conveyor, and are located between the belt conveyor lower belt 9 and the belt conveyor upper belt 10, and the first belt scale frame 1 and the second belt scale frame 4
  • a buffer roller set 2 is arranged between the buffer roller set 2
  • a volume weighing bucket 3 is arranged above the buffer roller group 2
  • a scraper type or screw type reclaimer 6 mounted on the belt conveyor is installed in the front middle portion or the head of the conveyor belt running direction.
  • a screw or belt conveyor type reclaimer 5 is arranged at the outlet of the reclaimer 6 above the volumetric hopper 3, and the speedometer 11 is mounted on a belt conveyor outside the first belt weigher 1, and the starting point detector 7 is installed.
  • the belt self-weight calibration signal is transmitted to the weighing control meter 8 on the belt conveyor that buffers the starting position of the idler group 2 in the forward direction.
  • the weighing control instrument 8 is connected by a cable to the first belt weigher 1, the second belt weigher 4, the volumetric scale 3, the starting point detector 7, the speed detector 11, and the weighing control instrument 8 can respectively display the material through the first belt.
  • the cumulative weight of the scale 1 , the cumulative weight of the second belt scale 4, the weight of the calibrated material in the volume scale 3, and the start point detector 7 measure the belt zero point over a length of the belt.
  • the uneven thickness of the belt conveyor itself is the main factor affecting the calibration of multi-materials with less materials.
  • the heavy control meter 8 establishes the starting point of the belt self-weight calibration through the starting point detector 7, and the calibration starting point automatically zeros the belt self-weight of the belt moving length larger than the volume weighing bucket 3 containing the standard material during the conveying time, so that the weighing control instrument 8 is When calibrating the amount of material to be conveyed, the belt's own weight is zero during the length of the belt, thus ensuring the accuracy of the material replacement for multi-material calibration.
  • the reclaimer 6 set on the belt conveyor automatically feeds the conveyor from the belt conveyor to the conveyor 5 according to the time set by the weighing control meter 8, and the conveyor 5 conveys the material to the volumetric bucket 3 Weighing, the weighing control instrument 8 detects the starting point of the belt calibration through the starting point detector 7, and the output signal of the weighing control meter 8 controls the volumetric bucket 3 to open the door. At this time, the first belt scale 1 measures the accumulated material.
  • the reclaimer 6 disposed in the middle of the belt conveyor adopts a scraper type reclaimer, and the bracket 14 of the reclaimer 6 is fixed on the belt conveyor, and the reclaimer 6 is provided with a reclaimer cover 12 and The material pick-up spoon 13 and the take-up machine take-up spoon 13 scrape the material on the belt 10 on the belt conveyor by rotating, and the material enters the transfer machine 5 along the reclaimer shroud 12.
  • the reclaimer 6 is arranged in the middle of the belt conveyor, and adopts a scraper type reclaimer. At this time, the transfer machine 5 adopts a screw conveyor; the reclaimer 6 is arranged at the discharge opening of the belt head to adopt a swingable spiral type. The material machine can swing and let the coal flow flow when the material is not taken. At this time, the transfer machine 5 adopts a belt conveyor, as shown in FIG.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Control Of Conveyors (AREA)
  • Structure Of Belt Conveyors (AREA)

Description

一种高精度皮带称重装置 技术领域
本发明涉及一种散状物料称量装置，尤其是一种用于皮带输送机上的高精度皮带称重装置。
背景技术
随着煤、铁矿石等散状物料价格的上升，对皮带输送机上的皮带称重装置计量精度要求愈来愈高，同时对其计量精度的可靠性、稳定性更加重视。目前用于皮带输送机计量的皮带秤所选用的称重传感器、称重控制仪表其自身精度较高，可达0.03%以上。而皮带秤安装在皮带输送机上其使用精度仅在1%---0.5%，其精度的稳定性往往更不容易保证，其主要原因是皮带输送机随其上物料的多少而引起皮带张力变化、振动等各种因素的影响以及不能方便及时地进行校准。
现有皮带秤的校准方法有悬挂砝码校准、链码校准、循环链码校准、电子校准、物料校准，除物料校准能真实反映物料运行真实状况，校准可信度高，其它几种校准方式均是模拟校准，不能真实反映输送机全长上铺满物料时的皮带张力状况，校准误差大，不能满足实际的需求，而物料校准需要的物料量国家标准要求至少是2%皮带机输送量，如皮带机输送量是5000吨/时，那么物料校准时需要的物料量将达到100吨。随着大流量输送机（10000吨/时以上）出现的愈来愈多，物料校准需要的物料量也愈来愈大，称量物料的设备越大型化。
现有的物料校准方法采用料斗秤、汽车衡或轨道衡等形式。校准设备造价高，现场取料、放料环节多不容易保证物料的准确度，校准时影响正常的生产不能及时校准，校准一次所需要的时间多不能方便的校准。
 技术问题
本发明的目的是克服现有技术中的不足，提供一种结构简单、费用低、能在线校准的高精度皮带称重装置。
 技术解决方案
本发明的高精度皮带称重装置，包括安装在皮带机上的第一皮带秤架、第二皮带秤架，取料机，在所述的第一皮带秤架与第二皮带秤架之间设有缓冲托辊组，缓冲托辊组上方设有容积秤斗，容积秤斗上方设有与取料机相连的转运机，在皮带机上设有测速器，在缓冲托辊组的前进方向设有安装在皮带机上的皮带自重校准的始点探测器，第一皮带秤架、第二皮带秤架、容积秤斗、始点探测器、测速器分别经电缆连接有可显示物料通过第一皮带秤架的累计重量、第二皮带秤架的累计重量、容积秤斗中校准物料的重量以及始点探测器测量一段皮带长度内的皮带零点的称重控制仪表。
所述第一皮带秤架及第二皮带秤架为单托辊秤架、双托辊秤架或多托辊秤架；所述始点探测器为非接触式或接触式探测器；所述的取料机设置在皮带机的中部或头部。
 有益效果
本发明采用集称重与物料校准于一体的皮带称重装置，用始点探测器、两台皮带秤架和一台容积秤斗，并利用一台称重控制仪表实现在线自动采集少物料替代多物料进行皮带秤精度比对、校准，实现高精度称量。在皮带机输送物料前，称重控制仪表通过始点探测器建立皮带自重校准始点，以此校准始点对大于容积秤斗容纳标准物料的输送时间内皮带移动长度的皮带自重进行自动调零，保证称重控制仪表在校准输送物料量时，在此段皮带长度内皮带自重为零。由于采用较少物料替代多物料校准，容易实现在线即时方便的校对皮带秤的运行计量精度，校准设备成本低，校准时不影响正常的生产，确保皮带秤高精度计量，其结构简单、成本低、快捷方便、精度可靠，节约了大量的人力和物力，具有广泛的实用性。
 附图说明
图1是本发明的装置结构示意图；
图2是本发明的取料机结构示意图；
图3是本发明的取料机头部安装示意图。
图中：1-第一皮带秤架、2-缓冲托辊组、3-容积秤斗、4-第二皮带秤架、5-转运机、6-取料机、7-始点探测器、8-称重控制仪表、9-皮带机下皮带、10-皮带机上皮带、11-测速器、12-取料机护罩、13-取料机取料勺、14-取料机支架
 本发明的实施方式
下面结合附图对本发明的一个实施例作进一步的描述：
本发明的高精度皮带称重装置主要由第一皮带秤架1、缓冲托辊组2、容积秤斗3、第二皮带秤架4、转运机5、取料机6、始点探测器7、称重控制仪表8、测速器11构成。第一皮带秤架1及第二皮带秤架4可采用单托辊秤架、也可采用双托辊秤架，或是采用多托辊秤架；始点探测器7可采用非接触式，也可采用接触式探测器。多托辊式第一皮带秤架1、第二皮带秤架4安装在皮带机上，位于皮带机下皮带9和皮带机上皮带10之间，第一皮带秤架1和第二皮带秤架4之间装有缓冲托辊组2，缓冲托辊组2上方设有容积秤斗3，在输送带运行方向的前方中部或头部安装有架设在皮带机上的刮板式或螺旋式取料机6，取料机6的出口处连接有设在容积秤斗3上方的螺旋式或皮带输送式取料转运机5，测速器11安装在第一皮带秤架1外侧的皮带机上，始点探测器7安装在缓冲托辊组2的前进方向起始位置的皮带机上，向称重控制仪表8输送皮带自重校准信号。称重控制仪表8通过电缆连接第一皮带秤架1、第二皮带秤架4、容积秤斗3、始点探测器7、测速器11，通过称重控制仪表8可分别显示物料通过第一皮带秤架1的累计重量、第二皮带秤架4的累计重量、容积秤斗3中校准物料的重量以及始点探测器7测量一段皮带长度内的皮带零点。
工作原理：皮带输送机的皮带自身厚薄不均是影响采用少物料替代多物料校准的主要因素，为了减少皮带自身厚薄不均对少物料在线校准精度的影响，在皮带机输送物料前，用称重控制仪表8通过始点探测器7建立皮带自重校准始点，以此校准始点对大于容积秤斗3容纳标准物料的输送时间内皮带移动长度的皮带自重进行自动调零，使称重控制仪表8在校准输送物料量时，在此段皮带长度内皮带自重为零，从而保证少物料替代多物料校准的精度。在皮带机输送物料时，设置在皮带机上的取料机6按称重控制仪表8设定的时间进行自动从皮带机上取料送入转运机5，转运机5将物料输送到容积秤斗3进行称重，称重控制仪表8通过始点探测器7检测到皮带校准始点，称重控制仪表8输出信号控制容积秤斗3开门放料，此时第一皮带秤架1计量的是输送物料累积重量，第二皮带秤架4计量的是输送物料累积重量和容积秤斗3放下的标准物料重量，基于第一皮带秤架1与第二皮带秤架4通过的输送物料量相同，称重控制仪表8将第二皮带秤架4得到的累计重量去掉第一皮带秤架1得到的累计重量，得到容积秤斗3放出的标准物料重量值，此标准物料重量值与称重控制仪表8自身显示容积秤斗3的物料重量值进行比对，得出修正系数，按此修正系数修正称重控制仪表8量程系数使之显示标准物料重量值，定时进行比对、修正使皮带秤计量精度达到高精度、高稳定。此时皮带输送机全长上铺有物料，校准工况接近于正常输送时工况，实现用少物料校准取代了多物料校准。
如图2所示，设置在皮带机中部的取料机6采用刮板式取料机，取料机6的支架14固定在皮带机上，取料机6上设有取料机护罩12和取料机取料勺13，取料机取料勺13通过旋转方式刮取皮带机上皮带10上的物料，物料沿取料机护罩12进入转运机5。
取料机6设置在皮带机的中部时采用刮板式取料机，此时转运机5采用螺旋输送机；取料机6设置在皮带机头部的卸料口时采用可摆动的螺旋式取料机，不取料时可摆动让开煤流，此时转运机5采用皮带输送机，如图3所示。

Claims (4)

  1. 一种高精度皮带称重装置，包括安装在皮带机上的第一皮带秤架（1）、第二皮带秤架（4），取料机（6），其特征在于：在所述的第一皮带秤架（1）与第二皮带秤架（4）之间设有缓冲托辊组（2），缓冲托辊组（2）上方设有容积秤斗（3），容积秤斗（3）上方设有与取料机（6）相连的转运机（5），在皮带机上设有测速器（11），在缓冲托辊组（2）的前进方向设有安装在皮带机上的皮带自重校准的始点探测器（7），第一皮带秤架（1）、第二皮带秤架（4）、容积秤斗（3）、始点探测器（7）、测速器（11）分别经电缆连接有可显示物料通过第一皮带秤架（1）的累计重量、第二皮带秤架（4）的累计重量、容积秤斗（3）中校准物料的重量以及始点探测器（7）测量一段皮带长度内的皮带零点的称重控制仪表（8）。
  2. 根据权利要求1所述的高精度皮带称重装置，其特征在于：所述第一皮带秤架（1）及第二皮带秤架（4）为单托辊秤架、双托辊秤架或多托辊秤架。
  3. 根据利力要求1所述的高精度皮带称重装置，其特征在于：所述始点探测器（7）为非接触式或接触式探测器。
  4. 根据权利要求1所述的高精度皮带称重装置，其特征在于：所述的取料机（6）设置在输送带运行方向的前方的中部或头部。
PCT/CN2010/080551 2010-11-18 2010-12-30 一种高精度皮带称重装置 WO2012065340A1 (zh)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BR112013011995A BR112013011995A2 (pt) 2010-11-18 2010-12-30 dispositivo de esteira transportadora para pesagem de alta precisão
CA2815398A CA2815398C (en) 2010-11-18 2010-12-30 High precision belt weighing device
RU2013127573/28A RU2549208C2 (ru) 2010-11-18 2010-12-30 Высокоточное ленточное взвешивающее устройство
DE112010006017.7T DE112010006017B4 (de) 2010-11-18 2010-12-30 Hochgenaue Bandwiegeeinrichtung
AU2010364254A AU2010364254B2 (en) 2010-11-18 2010-12-30 High precision belt weighing device
US13/865,183 US9631970B2 (en) 2010-11-18 2013-04-17 High precision belt weighing device and method
ZA2013/03550A ZA201303550B (en) 2010-11-18 2013-05-16 High precision belt weighing device

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CN2010105484845A CN102012253B (zh) 2010-11-18 2010-11-18 一种高精度皮带称重装置
CN201010548484.5 2010-11-18

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US13/865,183 Continuation US9631970B2 (en) 2010-11-18 2013-04-17 High precision belt weighing device and method

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WO2012065340A1 true WO2012065340A1 (zh) 2012-05-24

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CN (1) CN102012253B (zh)
AU (1) AU2010364254B2 (zh)
BR (1) BR112013011995A2 (zh)
CA (1) CA2815398C (zh)
DE (1) DE112010006017B4 (zh)
RU (1) RU2549208C2 (zh)
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ZA (1) ZA201303550B (zh)

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CN101614578B (zh) * 2009-07-29 2010-12-08 江苏赛摩集团有限公司 多累计量电子皮带秤
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