WO2011011990A1 - 多累计量电子皮带秤 - Google Patents

多累计量电子皮带秤 Download PDF

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Publication number
WO2011011990A1
WO2011011990A1 PCT/CN2010/071082 CN2010071082W WO2011011990A1 WO 2011011990 A1 WO2011011990 A1 WO 2011011990A1 CN 2010071082 W CN2010071082 W CN 2010071082W WO 2011011990 A1 WO2011011990 A1 WO 2011011990A1
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Prior art keywords
load cell
weighing
cumulative
belt scale
electronic belt
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PCT/CN2010/071082
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English (en)
French (fr)
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厉达
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江苏赛摩集团有限公司
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Application filed by 江苏赛摩集团有限公司 filed Critical 江苏赛摩集团有限公司
Priority to US13/384,537 priority Critical patent/US20120111644A1/en
Priority to AU2010278550A priority patent/AU2010278550B2/en
Priority to CA2801177A priority patent/CA2801177A1/en
Publication of WO2011011990A1 publication Critical patent/WO2011011990A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/14—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices
    • G01G11/16—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices being electrical or electronic means

Definitions

  • the invention relates to a multi-cumulative electronic belt scale, in particular to an online accurate and reliable weighing measurement for continuously conveying materials of a belt conveyor.
  • the electronic belt scale for continuous weighing of belt conveyor materials has various structures such as single lever, double lever and full suspension; these electronic belt scales have a separate independent meter when used on the conveyor, and there are also two The components are metered together, and the metering system is composed of a plurality of single scales.
  • the electronic belt scale metering system adopts a metering method in which all weighing signals are combined into an accumulator, or a metering method in which the weighing signals of the respective load cells are independently entered into the accumulator for cumulative calculation.
  • the accumulator in the mode only displays and applies a cumulative amount. This has the disadvantage that the electronic belt scale provides less weighing information and is not conducive to monitoring and operation.
  • the full-suspension single-roller weighing unit of the electronic belt scale which constitutes the metering system has a fixed connection between the roller bracket and the load cell in the structure, and is inconvenient to adjust during installation.
  • This structure is installed in the scale body. There is a certain internal stress in the future, and sometimes the internal stress cannot be released very well, and it is easy to generate over-position, which affects the accuracy of the final measurement result of the belt scale.
  • the object of the present invention is to provide a multi-cumulative electronic belt scale with compact structure, no over-positioning, no additional internal stress, simple installation and debugging, and accurate weighing.
  • the multi-cumulative electronic belt scale of the invention comprises an accumulator and a speed measuring sensor, and further comprises a plurality of sets of weighing units uniformly distributed and fixedly mounted on the conveyor frame, each set of weighing units comprising a conveyor frame.
  • the load cell holder has a load cell on the load cell holder
  • the support sensor has a support body at one end of the cantilever, the top of the support body is supported on the roller support, and the bottom is provided with a limiting body connected with the load cell holder.
  • the bottom of the load cell holder is provided with a limit bolt passing through the bottom of the load cell in contact with the cantilever end of the load cell, and the weighing signal line of each load cell and the speed measuring signal line of the speed measuring sensor are respectively connected to the accumulator.
  • the accumulator software is programmed to accumulate and combine the weighing signals and speed signals of each group into a plurality of sets of cumulative quantities, and form a weighting and display control for a set of main cumulative quantities and two or more auxiliary cumulative amounts for the electronic belt scale.
  • the accumulator is a computer or electronic weighing display control instrument; the plurality of sets of weighing units are at least two groups; the weighing sensor is hinged to the support body at one end; the load cell holder is The lower part is provided with a tension bolt fixed to the bottom of the conveyor frame; the roller support is a flat roller structure, a groove roller structure or a V-shaped roller structure; the weighing sensor bracket is respectively provided A load cell shield that covers the load cell.
  • the invention adopts a measuring system composed of a plurality of sets of weighing units, and combines by a plurality of sets of weighing units, thereby lengthening the length of the weighing domain and improving the weighing precision.
  • multiple sets of cumulative quantities are generated by combination; the accumulator integrates the weighing signals of the multi-way weighing unit and the speed signals of the speed measuring sensors into a plurality of sets of cumulative quantities through software programming, thereby realizing multiple sets of electronic belt scales. Redundant backup, when there is a set of accumulated quantity abnormalities, can be detected and isolated in time, and another set of accumulated amount works normally to ensure that the electronic belt scale can still be reliably metered at this time, and the belt conveyor system does not need to stop.
  • the system is still working.
  • the invention can obtain multiple sets of cumulative quantities at the same time, has redundant backup function, high reliability and accurate measurement accuracy; the weighing unit has simple structure, large adaptable bandwidth range, no over-positioning of the weighing sensor, and the weighing sensor bracket has a firm structure and installation.
  • the debugging is simple and easy, and the maintenance workload is small. It is most suitable for online accurate and reliable weighing measurement of the continuous conveying of materials by the belt conveyor, and has long service life and wide practicality.
  • FIG. 1 is a schematic structural view of a multi-cumulative electronic belt scale of the present invention.
  • FIG. 2 is a structural view of a multi-cumulative electronic belt scale weighing unit of the present invention.
  • FIG 3 is an enlarged view showing the structure of a multi-cumulative electronic belt scale load cell assembly of the present invention.
  • Figure 4 is a left side view of Figure 3.
  • the multi-cumulative electronic belt scale as shown in the figure is composed of a plurality of sets of weighing units 12, an accumulator 10, and a speed measuring sensor 11 which are evenly distributed and fixedly mounted on the conveyor frame 6.
  • Each group of weighing unit 12 is mainly composed of a roller bracket 1, a support body 2, a load cell shield 3, a load cell 4, a load cell bracket 5, a tension bolt 7, a limit bolt 8, and a limiting body 9. .
  • the plurality of sets of weighing units 12 are at least two groups, and four groups are shown in FIG.
  • the plurality of sets of weighing units 12 may also be 3 groups, 5 groups, 6 groups, 7 groups, or 8 groups, etc. according to actual needs.
  • Each of the load cell holders 5 is fixed with a cantilever type load cell 4 and a load cell cover 3, and each of the load cell holders 5 is provided with a limit bolt 8 and a limiting body 9 under the position of the limiting body 9 The other end is connected to the lower side of the support body 2 hingedly mounted to the cantilever end of the load cell 4, and the roller support 1 is fixedly mounted on the upper and lower support bodies 2.
  • the cantilever end of the load cell 4 has a cylindrical shape, and the cylindrical end is hinged with the support body 2 to form a full suspension support for the roller bracket 1 to eliminate the left and right load cell brackets 5 on the conveyor frame 6.
  • the positional error of the front and rear installation causes the over-positioning effect of the load cell 4; the limit bolt 8 under the load cell holder 5 is adjustable, and the weight sensor 4 can be overload-protected.
  • One end of the limiting body 9 under the load cell holder 5 is fixedly connected to the load cell holder 5, and the other end is fixedly connected to the support body 2, and the limiting body 9 limits the rotation movement of the support body 2 on the one hand, and allows the support body 2 at the same time.
  • the downward micro-motion causes the lateral force of the load cell 4 to approach zero, thereby ensuring that the load cell 4 is only subjected to a downward force.
  • the roller bracket 1 of each group of weighing units 12 is in the form of a flat roller bracket, or a grooved roller bracket or a V-shaped roller bracket; the number of load cells 4 of each group of weighing units 12 is based on the bandwidth Needed, at least one can be used, arranged in the middle of the underside of the roller support 1.
  • the weighing signal line of each load cell 4 and the speed measuring signal line of the speed measuring sensor 11 are respectively connected to the accumulator 10 through the pair of accumulators 10
  • the software programming control integrates the weighing signal of the multi-way load cell 4 and the speed signal of the speed measuring sensor 11 into a plurality of sets of accumulated amounts, so that the electronic belt scale obtains a set of main cumulative amount and two or more auxiliary cumulative amounts.
  • the accumulator 10 can be selected from a computer or an electronic weighing display control instrument. The example in the drawing is an electronic weighing display control instrument with three sets of display windows.
  • the main cumulative amount is composed of all group weighing units, the weighing area is long, and the measurement accuracy is high. When the belt scale is working normally, it is measured by the main cumulative amount.
  • the auxiliary cumulative amount is composed of each group of weighing units 12 independently, and the auxiliary cumulative amount obtained by each group of weighing units 12 is compared online by software through real-time online comparison. If it is found that which group of auxiliary cumulative quantities are not within the set value range, the accumulator 10 Then, the weighing sensor 4 in the weighing unit 12 of the group auxiliary amount is discriminated, and it is determined whether the group of weighing sensors 4 has a problem, and the weighing unit 12 of the group of problematic weighing sensors 4 is isolated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)

Description

多累计量电子皮带秤 技术领域
本发明涉及多累计量电子皮带秤，尤其适用于带式输送机连续输送物料的在线精确可靠称重计量。
背景技术
目前，用于带式输送机物料连续称量的电子皮带秤，有单杠杆、双杠杆、全悬浮式等多种结构形式；这些电子皮带秤在输送机上使用时有单独一个独立计量，也有两个组成一对计量，还有用多个单秤组成计量系统计量的。目前这种电子皮带秤计量系统有采用将所有称重信号合并进入累计器的计量方式，或者采用将各称重传感器的称重信号分别独立进入累计器进行累计运算的计量方式，这两种计量方式中的累计器只显示和运用一种累计量。这就存在电子皮带秤提供的称重信息少、不利于监控和运用的缺点。另外组成计量系统的电子皮带秤的全悬浮式单托辊称重单元，其结构中托辊支架与称重传感器的连接为固定式，安装时不方便调整，这种结构形式在秤体安装好以后存在一定的内应力，有时该内应力无法很好释放，容易产生过定位，从而影响皮带秤最终计量结果的准确性。
技术问题
本发明的目的是提供一种结构紧凑、无过定位，无额外内应力、安装调试简单容易，称量准确的多累计量电子皮带秤。
技术解决方案
本发明多累计量电子皮带秤，包括累计器和测速传感器，还包括均匀分布并固定安装在输送机机架上的多组称重单元，每组称重单元包括设在输送机机架上的称重传感器支架，称重传感器支架上设有称重传感器，称重传感器悬臂一端铰接有支承体，支承体顶部支撑在托辊支架，底部装有与称重传感器支架相连接的限位体，称重传感器支架的底部设有穿过其底部与称重传感器悬臂端相接触的限位螺栓，每个称重传感器的称重信号线和测速传感器的测速信号线分别与累计器相连接，通过对累计器软件编程，将各组称重信号与速度信号累计并组合成多组累计量，形成对电子皮带秤进行一组主累计量和两组以上辅累计量的测重和显示控制。
所述的累计器为计算机或电子称重显示控制仪表；所述的多组称重单元至少为两组；所述称重传感器与支承体相铰接一端为圆柱形；所述称重传感器支架的下部设有固定于输送机机架底部的拉紧螺栓；所述的托辊支架为平形托辊结构、槽形托辊结构或V形托辊结构；所述的称重传感器支架上分别设有罩在称重传感器上的称重传感器护罩。
 有益效果
本发明采用了多组称重单元组成的计量体系，通过多组称重单元进行组合，一方面加长了称重域的长度，提高了称量精度。另一方面通过组合产生多组累计量；累计器通过软件编程将多路称重单元的称重信号与测速传感器的速度信号进行累计并组合成多组累计量，实现电子皮带秤多组累计量的冗余备份，当其中有一组累计量出现异常时，能够被及时发现和加以隔离控制，另外一组累计量正常工作从而保证电子皮带秤此时仍可以可靠计量，同时皮带输送系统无需停机，系统仍可正常运行。本发明能同时得到多组累计量，具有冗余备份功能，可靠性高，计量精度准确；称重单元结构简单，适应带宽范围大，称重传感器无过定位，称重传感器支架结构坚固，安装调试简单容易，维护工作量少，最适用于带式输送机连续输送物料的在线精确可靠称重计量，使用寿命长，具有广泛的实用性。
附图说明
图1是本发明多累计量电子皮带秤结构原理图。
图2是本发明多累计量电子皮带秤称重单元的结构图。
图3是本发明多累计量电子皮带秤称重传感器组件结构放大图。
图4是图3的左视图。
图中：1-托辊支架、2-支承体、3-称重传感器护罩、4-称重传感器、5-称重传感器支架、6-输送机机架、7-拉紧螺栓、8-限位螺栓、9-限位体、10-累计器、11-测速传感器、12-称重单元。
 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：
如图所示的多累计量电子皮带秤，由均匀分布并固定安装在输送机机架6上的多组称重单元12、累计器10、测速传感器11组成。每组称重单元12主要由托辊支架1、支承体2、称重传感器护罩3、称重传感器4、称重传感器支架5、拉紧螺栓7、限位螺栓8、限位体9组成。多组称重单元12至少为两组，图1中所示为4组。根据实际需要多组称重单元12还可以是3组、5组、6组、7组或8组等。每组称重单元12的称重传感器支架5有两个，按左右分别固定安装在输送机机架6上面，为增加称重传感器支架5在输送机机架6上的固定刚度，在两个称重传感器支架5的下部分别安装了固定在输送机机架6下面的拉紧螺栓7。每个称重传感器支架5上固定有悬臂式的称重传感器4和称重传感器护罩3，每个称重传感器支架5的下面设有限位螺栓8和限位体9，限位体9的另一端连接在铰接安装于称重传感器4悬臂端的支承体2的下面，托辊支架1固定安装在左右两个支承体2的上面。称重传感器4的悬臂一端为圆柱形，该圆柱端与支承体2相铰接，对托辊支架1形成全悬浮式的支撑，可以消除左右两个称重传感器支架5在输送机机架6上的前后安装位置误差给称重传感器4带来的过定位影响；称重传感器支架5下面的限位螺栓8可调，能对称重传感器4加以过载保护。称重传感器支架5下面的限位体9一端与称重传感器支架5固定连接，另一端与支承体2固定连接，限位体9一方面限制支承体2的回转运动，同时又允许支承体2向下的微量运动，从而使称重传感器4所受的侧向力合力接近零，从而保证了称重传感器4只受向下的力。每组称重单元12的托辊支架1的结构形式为平形托辊支架，或为槽形托辊支架或V形托辊支架；每组称重单元12的称重传感器4的数量根据带宽的需要，最少可以只选用一个，布置在托辊支架1下面的中间。每个称重传感器4的称重信号线和测速传感器11的测速信号线分别与累计器10相连接，通过对累计器10 软件编程控制，将多路称重传感器4的称重信号与测速传感器11的速度信号进行累计并组合成多组累计量，使电子皮带秤获得一组主累计量和两组以上的辅累计量。累计器10可选用计算机，也可选用电子称重显示控制仪表，附图中实例为带有三组显示窗口的电子称重显示控制仪表。
主累计量由所有组称重单元组成，称重区域长，计量精度高，皮带秤正常工作时由主累计量进行计量。辅累计量由每组称重单元12独立组成，将每组称重单元12得到的辅累计量通过软件进行实时在线比对，如发现哪组辅累计量不在设定值范围内，累计器10则对该组辅累计量的称重单元12中的称重传感器4进行判别，并确定该组称重传感器4是否有问题，将该组有问题的称重传感器4的称重单元12加以隔离控制，此时，另外一组正常的辅累计量自动替代主累计量，皮带秤称量工作不中断，系统继续运行。从而保证电子皮带秤的称重传感器有问题，系统仍可以进行可靠的计量，同时皮带输送系统无需停机。大大提高了电子皮带秤运行的可靠性和计量精度的准确性。避免由于称重传感器发生故障，计量不准，造成经济损失。

Claims (7)

  1. 一种多累计量电子皮带秤，包括累计器(10)和测速传感器(11)，其特征在于：还包括均匀分布并固定安装在输送机机架(6)上的多组称重单元(12)，每组称重单元（12）包括称重传感器支架（5），称重传感器支架（5）上设有悬臂式的称重传感器（4），称重传感器（4）悬臂一端铰接有支承体（2），支承体（2）顶部支撑有托辊支架（1），底部装有与称重传感器支架（5）相连接的限位体（9），称重传感器支架（5）的底部设有穿过其底部与称重传感器（4）悬臂端相接触的限位螺栓（8）；每个称重传感器(4)的称重信号线和测速传感器(11)的测速信号线分别与累计器(10)相连接，通过对累计器(10)软件编程，将各组称重信号与速度信号累计并组合成多组累计量，形成对电子皮带秤进行一组主累计量和两组以上辅累计量的测重和显示控制。
  2. 根据权利要求1所述的多累计量电子皮带秤，其特征在于：所述的累计器（10）为计算机或电子称重显示控制仪表。
  3. 根据权利要求1所述的多累计量电子皮带秤，其特征在于：所述的多组称重单元（12）至少为两组。
  4. 根据权利要求1所述的多累计量电子皮带秤，其特征在于：所述称重传感器（4）与支承体（2）相铰接一端为圆柱形。
  5. 根据权利要求1所述的多累计量电子皮带秤，其特征在于：所述称重传感器支架（5）的下部设有固定于输送机机架（6）底部的拉紧螺栓（7）。
  6. 根据权利要求1所述的多累计量电子皮带秤，其特征在于：所述的托辊支架（1）为平形托辊结构、槽形托辊结构或V形托辊结构。
  7. 根据权利要求1所述的多累计量电子皮带秤，其特征在于：所述的称重传感器支架（5）上分别设有罩在称重传感器（4）上的称重传感器护罩（3）。
PCT/CN2010/071082 2009-07-29 2010-03-16 多累计量电子皮带秤 WO2011011990A1 (zh)

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Application Number Priority Date Filing Date Title
US13/384,537 US20120111644A1 (en) 2009-07-29 2010-03-16 Electronic belt scale with multiple accumulative quantities
AU2010278550A AU2010278550B2 (en) 2009-07-29 2010-03-16 Electronic belt scale with multiple accumulative quantities
CA2801177A CA2801177A1 (en) 2009-07-29 2010-03-16 Electronic belt scale with multiple accumulative quantities

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CN2009101820172A CN101614578B (zh) 2009-07-29 2009-07-29 多累计量电子皮带秤
CN200910182017.2 2009-07-29

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