WO2005038417A1 - A loader electro-balance - Google Patents

A loader electro-balance Download PDF

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Publication number
WO2005038417A1
WO2005038417A1 PCT/CN2004/000757 CN2004000757W WO2005038417A1 WO 2005038417 A1 WO2005038417 A1 WO 2005038417A1 CN 2004000757 W CN2004000757 W CN 2004000757W WO 2005038417 A1 WO2005038417 A1 WO 2005038417A1
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WO
WIPO (PCT)
Prior art keywords
pin
loader
electronic scale
sensor
boom
Prior art date
Application number
PCT/CN2004/000757
Other languages
French (fr)
Chinese (zh)
Inventor
Xiongyue Sun
Tao Liu
Naike Zhang
Wei Tan
Original Assignee
Chengdu Huoan Measure Technical Center
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Huoan Measure Technical Center filed Critical Chengdu Huoan Measure Technical Center
Priority to AU2004282231A priority Critical patent/AU2004282231A1/en
Priority to DE202004020704U priority patent/DE202004020704U1/en
Publication of WO2005038417A1 publication Critical patent/WO2005038417A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G01G19/083—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles lift truck scale

Definitions

  • the present invention relates to an electronic scale, and more particularly to a loader electronic scale. Background technique
  • the loader is mainly used for loading bulk cargo.
  • a weighing device on the loader to measure the loaded goods.
  • the existing loader weighing device uses hydraulic sensors and is installed in the hydraulic oil circuit. Its weighing instrument uses traditional data processing methods, so it can only be weighed in a static state, with low accuracy and poor stability. .
  • a related foreign professional magazine reported a quasi-dynamic automatic weighing instrument, that is, the loader lifts the loaded goods to a certain position during the loading and unloading process and is at a static state, and then weighs the weight of the goods.
  • This quasi-dynamic Automatic weighing instruments have the advantages of small size, low power consumption and accurate weighing.
  • such a quasi-dynamic automatic weighing instrument can only weigh the load when the loader rests the loaded goods at a certain position. It cannot accurately weigh the goods under dynamic conditions. Extend the time for loading and unloading cargo. Summary of the invention
  • the object of the present invention is to overcome the problems existing in the prior art, and provide a loader electronic scale with high measurement accuracy, good stability, and weighing during the loading process.
  • the loader electronic scale of the present invention includes a loader bucket, a boom, a boom, a sensor, a sample discrimination switch, and a signal processing device, wherein the shaft pin resistance strain sensor is installed on the boom of the loader Inside the shaft hole, the sampling discrimination switch is installed on the boom frame, and the signal processing device is connected to the sampling discrimination switch and the shaft pin resistance strain sensor.
  • a shaft pin resistance strain sensor is installed in the shaft holes of the two booms of the loader, the shape of the shaft pin sensor is a shaft pin type, and a resistance strain gauge is affixed inside, A power supply and a signal lead-out line are connected to the amplifier of the signal processing device.
  • An oil groove is provided at the axis position of the pin sensor. One end of the oil groove has an oil cup interface, and the other end of the oil groove has an oil outlet.
  • the shape of the oil groove is L-shaped.
  • Two sampling discrimination switches are installed on the boom of the loader. The distance between the two is 30 to 40 mm.
  • the sampling discrimination switch is composed of a Hall switch or a proximity switch.
  • the signal processing device is composed of an amplifier, an A / D converter, a programmable logic device, and a central processing unit.
  • the 20th pin of the programmable logic device is connected to a + 5V power source.
  • Pin 1 is connected to pin 19
  • pin 3 is connected to a sampling discrimination switch
  • pin 4 is connected to another sampling discrimination switch
  • pin 5 is connected to the output signal interface of the CPU
  • pin 15 is connected to the CPU's
  • the input signal interface is connected, pin 11 and pin 12 are connected, + 5V power is connected, pin 13 and 14 are connected, pin 10 is grounded, the output pin of the amplifier is connected to the input pin of the A / D converter, A / D
  • the output pin of the converter is connected to the data bus of the central processing unit.
  • the loader electronic scale of the present invention injects lubricating oil from the oil cup at the interface between the oil groove of the shaft pin sensor and the oil cup, and the lubricating oil flows out of the oil outlet through the oil groove.
  • the oil The installed shaft pin sensor is lubricated to improve the friction and wear and heat of the shaft pin sensor and extend the service life of the shaft pin sensor.
  • a sampling discriminating switch installed on its boom frame collects the weighing signal and the shaft in the shaft hole of the boom A certain weight signal is generated on the pin sensor.
  • the signal processing device After the signal processing device receives and reads the weight signal, it is amplified by an amplifier, converted by an A / D converter, and processed by a programmable logic controller and a central processor. Go to the monitor display and / or printer to print.
  • the two sampling discrimination switches installed on the boom can accurately determine the bucket's rising and falling positions during the loading process. When the bucket is rising, one sampling discrimination switch is closed first, and the two sampling discrimination switches are closed simultaneously. At this time, the logic circuit generates a rising signal, and the central processing unit then processes the collected rising weight signal. When the bucket is lowered, one sample discrimination switch is closed first. When two sampling discrimination switches are closed at the same time, the logic circuit generates a lowering signal, and the central processing unit processes the collected lowering weight signal.
  • the loader electronic scale of the present invention also uses fuzzy algorithms to correct data at various weighing speeds to ensure its accuracy.
  • a dump card is also used to transfer the loader's weighing information to a PC for processing and querying.
  • the loader electronic scale of the invention can be dynamically and automatically weighed during the loading process, and the comprehensive accuracy can reach 1%. ⁇ 5%. , Good stability, long service life, can be used as a measuring instrument.
  • FIG. 1 is a schematic side view of the structure of the loader electronic scale of the present invention.
  • FIG. 2 is a plan view of FIG. 1.
  • FIG. 3 is a schematic structural diagram of an axle pin sensor of an electronic evaluation of a loader according to the present invention.
  • FIG. 4 is a logic circuit diagram of a signal processing device of the electronic evaluation of the loader of the present invention.
  • symbol 1 represents a boom stand
  • symbols 2 and 3 represent sampling discrimination switches
  • symbols 4, 5 represent a boom
  • symbol 6 represents a shaft sensor
  • symbol 7 represents a signal processing device
  • symbol 8 represents a power source.
  • symbol 9 represents oil tank
  • symbol 10 represents oil cup interface
  • symbol 11 represents oil hole
  • symbol 12 represents bucket
  • symbol 1 3 represents amplifier
  • symbol 14 represents A / D converter
  • symbol 15 represents available
  • symbol 16 represents the central processing unit
  • symbol 17 represents the weight signal
  • symbol 18 represents the output signal.
  • the loader electronic scale of the present invention includes a loader bucket 12, a boom 4, 5, a boom 1, a sensor 6, a sampling discrimination switch 2, 3, and signal processing.
  • the signal processing device 7 and the sampling The discrimination switches 2, 3 and the pin resistance strain sensor 6 are connected.
  • a shaft pin resistance strain sensor 6 is installed in each of the shaft holes of the two booms 4 and 5 of the loader.
  • the shape of the shaft pin sensor 6 is a shaft pin type, and an inner sticker
  • There is a resistance strain gauge there is a power source and a signal lead-out 8 connected to the amplifier 13 of the signal processing device 7, an oil groove 9 is opened at the axial position of the pin sensor 6, an oil cup 9 has an oil cup interface 10 at one end, and an oil groove 9 There is an oil outlet hole 11 at the other end, and the shape of the oil groove 9 is L-shaped.
  • Two sample-type discriminating switches 2, 3 are installed on the boom frame 1 of the loader, and the distance between the two is 30 to 40 mm.
  • the sampling discriminating switches 1, 3 are composed of a Hall switch or a proximity switch.
  • the signal processing device 7 is composed of an amplifier 1 3, an A / D converter 14, a programmable logic device 15 and a central processing unit 16.
  • the 20th pin of the programmable logic device 15 and + 5V The power supply is connected, pin 1 and pin 19 are connected, pin 3 is connected to the sampling discrimination switch 2, pin 4 is connected to the sampling discrimination switch 3, pin 5 is connected to the output signal interface of the central processing unit 16, and pin 15 is connected to The input signal interface of the central processing unit 16 is connected. Pins 11 and 12 are connected, + 5V power is connected, Pins 13 and 14 are connected, and 10 p is grounded.
  • the output pins of the amplifier 13 and the A / D converter are connected.
  • the input pin of 14 is connected, and the output pin of the A / D converter 14 is connected to the data bus of the central processing unit 16.
  • the loader electronic scale of the present invention injects lubricating oil from the oil cup at the interface 10 between the oil groove 9 of the axle pin sensor 5 and the oil cup, and the oil flows out of the oil outlet 11 through the oil groove 9 and rotates on the booms 4, 5
  • the shaft pin sensor 6 installed in the shaft hole is lubricated to improve the friction and abrasion and heat generation of the shaft pin sensor 6, and extend the service life of the shaft pin sensor 6.
  • the sampling discriminating switches 2, 3 installed on the boom 1 thereof, collect the weighing signal, and collect the weighing signal on the boom 4, A certain weight signal 17 is generated on the shaft pin sensor 6 in the shaft hole of 5. After the signal processing device 7 receives and reads this weight signal 17, it is amplified by the amplifier 13 and converted by the A / D converter 14, and After being processed by the programmable logic controller 15 and the central processing unit 16, the output is displayed on a display and / or printed by a printer.
  • the two sampling discrimination switches 2 and 3 installed on the boom frame 1 can accurately determine the rising and falling positions of the bucket 12 during loading. When the bucket 12 rises, one sampling discrimination switch 2 is closed first.
  • the logic circuit When the two sample-like discrimination switches 2 and 3 are closed at the same time, the logic circuit generates a rising signal 18, and at this time, the central processing unit 16 processes the collected rising weight signal 17. When the bucket 12 descends, one sampling discrimination switch 3 is closed first. When two sampling discrimination switches 2 and 3 are closed at the same time, the logic circuit generates a descending signal 18, and the central processing unit 16 processes the collected descending weight signal 17 .
  • the loader electronic scale of the present invention also uses fuzzy algorithms to correct data at various weighing speeds to ensure its accuracy.
  • use the dump card to transfer the loader's weighing information to the PC for processing and query.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

This invention relates to a loader electro-balance for weighing. The loader electro-balance includes a loader having a bucket, an arm, an arm bracket, and includes a sensor, a switch for judging the sampling and a processor of signal and an electro-balance system. Wherein the sensor is a pin resistance strain sensor, and the said sensor is installed into a hole in the arm of the loader, the switch for judging the sampling is fixed on the bracket of the arm of the loader and the processor of signal is connected with the said switch and the said sensor.

Description

装载机电子秤  Loader electronic scale
技术领域 Technical field
本发明是关于一种电子秤， 更特别的是关于一种装载机电子秤。 背景技术  The present invention relates to an electronic scale, and more particularly to a loader electronic scale. Background technique
装载机主要用于装载散堆装货物。 为了防止铁路货车超载和贸易结算， 需 要在装载机上安装称量装置， 对装载货物进行计量。 已有的装载机称量装置， 采用液压式传感器且安装在液压油路中， 其称量仪表采用传统的数据处理方 式， 因而只能在静止状态下称量， 且其精度较低， 稳定性差。  The loader is mainly used for loading bulk cargo. In order to prevent overloading of railway wagons and trade settlement, it is necessary to install a weighing device on the loader to measure the loaded goods. The existing loader weighing device uses hydraulic sensors and is installed in the hydraulic oil circuit. Its weighing instrument uses traditional data processing methods, so it can only be weighed in a static state, with low accuracy and poor stability. .
国外有关专业杂志报道了一种准动态自动称重仪器，即装载机在装卸过程 中要将所装载的货物提升到某确定位置并处于静止状态， 再称量出货物的重 量， 这种准动态自动称重仪器具有体积小、 功耗低和称量准确的优点。 但是， 这种准动态自动称重仪器只能在装载机将装载的货物静止在某一确定位置时 才能称得出货物的重量， 不能在动态的情况下准确称量出货物的重量，这样就 延长了装卸货物的时间。 发明内容  A related foreign professional magazine reported a quasi-dynamic automatic weighing instrument, that is, the loader lifts the loaded goods to a certain position during the loading and unloading process and is at a static state, and then weighs the weight of the goods. This quasi-dynamic Automatic weighing instruments have the advantages of small size, low power consumption and accurate weighing. However, such a quasi-dynamic automatic weighing instrument can only weigh the load when the loader rests the loaded goods at a certain position. It cannot accurately weigh the goods under dynamic conditions. Extend the time for loading and unloading cargo. Summary of the invention
本发明的目的是克服现有技术存在的问题，提供一种计量精度高、稳定性 好、 在装载过程中称量的装载机电子秤。  The object of the present invention is to overcome the problems existing in the prior art, and provide a loader electronic scale with high measurement accuracy, good stability, and weighing during the loading process.
本发明的这些以及其他目的将通过下列详细说明和描述来进一步的展开 和说明。  These and other objects of the present invention will be further developed and illustrated by the following detailed description and description.
本发明的装载机电子秤， 包括装载机铲斗、 动臂、 动臂架、 传感器、 釆样 判别开关和信号处理装置， 其中， 所述的轴销电阻应变式传感器安装在装载机 的动臂的轴孔内，采样判别开关安装在动臂架上，信号处理装置与采样判别开 关及轴销电阻应变式传感器相连。  The loader electronic scale of the present invention includes a loader bucket, a boom, a boom, a sensor, a sample discrimination switch, and a signal processing device, wherein the shaft pin resistance strain sensor is installed on the boom of the loader Inside the shaft hole, the sampling discrimination switch is installed on the boom frame, and the signal processing device is connected to the sampling discrimination switch and the shaft pin resistance strain sensor.
进一步的， 本发明的装载机电子秤，在装载机的二个动臂的轴孔内均安装 一个轴销电阻应变式传感器 ,轴销传感器的形状为轴销式，内贴有电阻应变片， 有电源和信号引出线与信号处理装置的放大器相连，在轴销传感器的轴线位置 上开有油槽， 油槽的一端有油杯接口， 油槽的另一端有出油孔， 油槽的形状为 L形。在装载机的动臂架上安装二个采样判别开关，二者之间的距离为 30 ~ 40 毫米， 采样判别开关由霍尔开关或接近开关构成。 Further, in the loader electronic scale of the present invention, a shaft pin resistance strain sensor is installed in the shaft holes of the two booms of the loader, the shape of the shaft pin sensor is a shaft pin type, and a resistance strain gauge is affixed inside, A power supply and a signal lead-out line are connected to the amplifier of the signal processing device. An oil groove is provided at the axis position of the pin sensor. One end of the oil groove has an oil cup interface, and the other end of the oil groove has an oil outlet. The shape of the oil groove is L-shaped. Two sampling discrimination switches are installed on the boom of the loader. The distance between the two is 30 to 40 mm. The sampling discrimination switch is composed of a Hall switch or a proximity switch.
在本发明的装载机电子秤中， 信号处理装置由放大器、 A/D转换器、 可编 程序逻辑器和中央处理器构成， 其中可編程序逻辑器的第 20脚与 + 5V电源相 连， 第 1脚和第 19脚相连， 第 3脚与一个采样判别开关相连， 第 4脚与另一 个采样判别开关相连， 第 5脚与中央处理器的输出信号接口相连， 第 15脚与 中央处理器的输入信号接口相连， 第 11脚和第 12脚相连、 接 + 5V电源， 第 13脚和 14脚相连， 第 10脚接地， 放大器的输出脚和 A/D转换器的输入脚相 连， A / D转换器的输出脚与中央处理器的数据总线相连。  In the loader electronic scale of the present invention, the signal processing device is composed of an amplifier, an A / D converter, a programmable logic device, and a central processing unit. The 20th pin of the programmable logic device is connected to a + 5V power source. Pin 1 is connected to pin 19, pin 3 is connected to a sampling discrimination switch, pin 4 is connected to another sampling discrimination switch, pin 5 is connected to the output signal interface of the CPU, and pin 15 is connected to the CPU's The input signal interface is connected, pin 11 and pin 12 are connected, + 5V power is connected, pin 13 and 14 are connected, pin 10 is grounded, the output pin of the amplifier is connected to the input pin of the A / D converter, A / D The output pin of the converter is connected to the data bus of the central processing unit.
本发明的装载机电子秤，从轴销传感器的油槽与油杯的接口处的油杯中注 入润滑油， 润滑油经过油槽从出油孔流出， 在动臂转动过程中， 对其轴孔内安 装的轴销传感器进行润滑， 以改善轴销传感器的摩擦磨损和发热状况，延长轴 销传感器的使用寿命。在用装载机往货车上装载散堆装货物时， 当铲斗上升到 某一位置，在其动臂架上安装的采样判别开关， 采集到称重信号并在动臂的轴 孔内的轴销传感器上产生一个确定的重量信号，当信号处理装置接收并读取到 这个重量信号后， 经过放大器放大， A/D转换器转换， 并经可编程序逻辑器和 中央处理器处理后， 输出到显示器显示和 /或打印机打印。 动臂架上安装的两 只采样判别开关能在装载的过程中准确的判别铲斗上升和下降的位置，当铲斗 上升时， 一只采样判别开关先闭合， 当两只采样判別开关同时闭合时， 逻辑电 路产生一个上升信号，此时中央处理器处理采集到的上升重量信号。 而当铲斗 下降时， 一只釆样判别开关先闭合， 当两只采样判别开关同时闭合时， 逻辑电 路产生一个下降信号， 中央处理器处理采集到的下降重量信号。  The loader electronic scale of the present invention injects lubricating oil from the oil cup at the interface between the oil groove of the shaft pin sensor and the oil cup, and the lubricating oil flows out of the oil outlet through the oil groove. During the rotation of the boom, the oil The installed shaft pin sensor is lubricated to improve the friction and wear and heat of the shaft pin sensor and extend the service life of the shaft pin sensor. When using a loader to load bulk cargo on a truck, when the bucket rises to a certain position, a sampling discriminating switch installed on its boom frame collects the weighing signal and the shaft in the shaft hole of the boom A certain weight signal is generated on the pin sensor. After the signal processing device receives and reads the weight signal, it is amplified by an amplifier, converted by an A / D converter, and processed by a programmable logic controller and a central processor. Go to the monitor display and / or printer to print. The two sampling discrimination switches installed on the boom can accurately determine the bucket's rising and falling positions during the loading process. When the bucket is rising, one sampling discrimination switch is closed first, and the two sampling discrimination switches are closed simultaneously. At this time, the logic circuit generates a rising signal, and the central processing unit then processes the collected rising weight signal. When the bucket is lowered, one sample discrimination switch is closed first. When two sampling discrimination switches are closed at the same time, the logic circuit generates a lowering signal, and the central processing unit processes the collected lowering weight signal.
本发明的装载机电子秤还利用模糊算法对各种称量速度下的数据进行修 正以保证其精确度。 此外， 还利用转储卡将有关装载机的称重信息转存到 PC 机中进行处理及查询。  The loader electronic scale of the present invention also uses fuzzy algorithms to correct data at various weighing speeds to ensure its accuracy. In addition, a dump card is also used to transfer the loader's weighing information to a PC for processing and querying.
本发明的装载机电子秤可以在装载过程中动态自动称量，且综合精度可高 达 1 %。 ~ 5%。， 稳定性好， 使用寿命长， 能作计量器具使用。 附图说明  The loader electronic scale of the invention can be dynamically and automatically weighed during the loading process, and the comprehensive accuracy can reach 1%. ~ 5%. , Good stability, long service life, can be used as a measuring instrument. BRIEF DESCRIPTION OF THE DRAWINGS
图 1是本发明的装载机电子秤的结构示意侧视图。 图 2是图 1的俯视图。 FIG. 1 is a schematic side view of the structure of the loader electronic scale of the present invention. FIG. 2 is a plan view of FIG. 1.
图 3是本发明的装载机电子评的轴销传感器的结构示意图。  FIG. 3 is a schematic structural diagram of an axle pin sensor of an electronic evaluation of a loader according to the present invention.
图 4是本发明的装载机电子评的信号处理装置的逻辑电路图。  FIG. 4 is a logic circuit diagram of a signal processing device of the electronic evaluation of the loader of the present invention.
在图 1至图 4中， 符号 1代表动臂架， 符号 2、 3代表采样判别开关， 符 号 4、 5代表动臂， 符号 6代表轴 肖传感器， 符号 7代表信号处理装置， 符号 8代表电源和信号引出线， 符号 9代表油槽， 符号 1 0代表油杯接口， 符号 11 代表出油孔， 符号 12代表铲斗， 符号 1 3代表放大器， 符号 14代表 A/D转换 器， 符号 15代表可编程序逻辑器， 符号 16代表中央处理器， 符号 17代表重 量信号， 符号 18代表输出信号。 具体实施方式  In Figs. 1 to 4, symbol 1 represents a boom stand, symbols 2 and 3 represent sampling discrimination switches, symbols 4, 5 represent a boom, symbol 6 represents a shaft sensor, symbol 7 represents a signal processing device, and symbol 8 represents a power source. And signal lead-out line, symbol 9 represents oil tank, symbol 10 represents oil cup interface, symbol 11 represents oil hole, symbol 12 represents bucket, symbol 1 3 represents amplifier, symbol 14 represents A / D converter, symbol 15 represents available In the programming logic, symbol 16 represents the central processing unit, symbol 17 represents the weight signal, and symbol 18 represents the output signal. detailed description
如图 1、 2、 3和 4所示， 本发明的装载机电子秤， 包括装载机铲斗 12、 动臂 4、 5、 动臂架 1、传感器 6、 采样判别开关 2、 3和信号处理装置 7 , 其中， 所述的轴销电阻应变式传感器 6安装在装载机的动臂 4、 5的轴孔内， 采样判 别开关 2、 3安装在动臂架 1上， 信号处理装置 7与采样判别开关 2、 3及轴销 电阻应变式传感器 6相连。  As shown in FIGS. 1, 2, 3 and 4, the loader electronic scale of the present invention includes a loader bucket 12, a boom 4, 5, a boom 1, a sensor 6, a sampling discrimination switch 2, 3, and signal processing. Device 7, wherein the above-mentioned pin resistance strain sensor 6 is installed in the shaft holes of the booms 4 and 5 of the loader, and the sampling discrimination switches 2 and 3 are installed on the boom frame 1. The signal processing device 7 and the sampling The discrimination switches 2, 3 and the pin resistance strain sensor 6 are connected.
进一步的， 本发明的装载机电子秤， 在装载机的二个动臂 4、 5的轴孔内 均安装一个轴销电阻应变式传感器 6 , 轴销传感器 6的形状为轴销式， 内贴有 电阻应变片， 有电源和信号引出幾 8与信号处理装置 7的放大器 1 3相连， 在 轴销传感器 6的轴线位置上开有油槽 9 , 油槽 9的一端有油杯接口 1 0 , 油槽 9 的另一端有出油孔 11， 油槽 9的形状为 L形。 在装载机的动臂架 1上安装二 个釆样判别开关 2、 3 , 二者之间的距离为 30 ~ 40毫米， 采样判别开关 1、 3 由霍尔开关或接近开关构成。  Further, in the loader electronic scale of the present invention, a shaft pin resistance strain sensor 6 is installed in each of the shaft holes of the two booms 4 and 5 of the loader. The shape of the shaft pin sensor 6 is a shaft pin type, and an inner sticker There is a resistance strain gauge, there is a power source and a signal lead-out 8 connected to the amplifier 13 of the signal processing device 7, an oil groove 9 is opened at the axial position of the pin sensor 6, an oil cup 9 has an oil cup interface 10 at one end, and an oil groove 9 There is an oil outlet hole 11 at the other end, and the shape of the oil groove 9 is L-shaped. Two sample-type discriminating switches 2, 3 are installed on the boom frame 1 of the loader, and the distance between the two is 30 to 40 mm. The sampling discriminating switches 1, 3 are composed of a Hall switch or a proximity switch.
在本发明中， 所述的信号处理装置 7由放大器 1 3 , A/D转换器 14 , 可编 程序逻辑器 15和中央处理器 16构成， 可编程序逻辑器 15的第 20脚与 + 5V 电源相连， 第 1脚和第 19脚相连， 第 3脚与采样判别开关 2相连， 第 4脚与 采样判别开关 3相连， 第 5脚与中央处理器 16的输出信号接口相连， 第 15 脚与中央处理器 16的输入信号接口相连， 第 11脚和第 12脚相连、 接 + 5V电 源， 第 1 3脚和 14脚相连， 第 10 p接地， 放大器 1 3的输出脚和 A/D转换器 14的输入脚相连， A/D转换器 14的输出脚与中央处理器 16的数据总线相连。 本发明的装载机电子秤， 从轴销传感器 5的油槽 9与油杯的接口 10处的 油杯中注入润滑油， 润滑油经过油槽 9从出油孔 11流出， 在动臂 4、 5转动过 程中，对其轴孔内安装的轴销传感器 6进行润滑， 以改善轴销传感器 6的摩擦 磨损和发热状况，延长轴销传感器 6的使用寿命。在用装载机往货车上装载散 堆装货物时， 当铲斗 12到某一位置， 在其动臂架 1上安装的采样判别开关 2、 3 , 采集到称重信号并在动臂 4、 5的轴孔内的轴销传感器 6上产生一个确定的 重量信号 17 , 当信号处理装置 7接收并读取到这个重量信号 17后， 经过放大 器 1 3放大， A/D转换器 14转换， 并经可编程序逻辑器 15和中央处理器 16处 理后， 输出到显示器显示和 /或打印机打印。 动臂架 1上安装的两只采样判别 开关 2、 3能在装载的过程中准确的判别铲斗 12上升和下降的位置， 当铲斗 12上升时， 一只采样判别开关 2先闭合， 当两只釆样判别开关 2、 3同时闭合 时， 逻辑电路产生一个上升信号 18 , 此时中央处理器 16处理采集到的上升重 量信号 17。 而当铲斗 12下降时， 一只采样判别开关 3先闭合， 当两只采样判 别开关 2、 3同时闭合时， 逻辑电路产生一个下降信号 18 , 中央处理器 16处 理采集到的下降重量信号 17。 In the present invention, the signal processing device 7 is composed of an amplifier 1 3, an A / D converter 14, a programmable logic device 15 and a central processing unit 16. The 20th pin of the programmable logic device 15 and + 5V The power supply is connected, pin 1 and pin 19 are connected, pin 3 is connected to the sampling discrimination switch 2, pin 4 is connected to the sampling discrimination switch 3, pin 5 is connected to the output signal interface of the central processing unit 16, and pin 15 is connected to The input signal interface of the central processing unit 16 is connected. Pins 11 and 12 are connected, + 5V power is connected, Pins 13 and 14 are connected, and 10 p is grounded. The output pins of the amplifier 13 and the A / D converter are connected. The input pin of 14 is connected, and the output pin of the A / D converter 14 is connected to the data bus of the central processing unit 16. The loader electronic scale of the present invention injects lubricating oil from the oil cup at the interface 10 between the oil groove 9 of the axle pin sensor 5 and the oil cup, and the oil flows out of the oil outlet 11 through the oil groove 9 and rotates on the booms 4, 5 In the process, the shaft pin sensor 6 installed in the shaft hole is lubricated to improve the friction and abrasion and heat generation of the shaft pin sensor 6, and extend the service life of the shaft pin sensor 6. When using a loader to load bulk cargo on a truck, when the bucket 12 reaches a certain position, the sampling discriminating switches 2, 3 installed on the boom 1 thereof, collect the weighing signal, and collect the weighing signal on the boom 4, A certain weight signal 17 is generated on the shaft pin sensor 6 in the shaft hole of 5. After the signal processing device 7 receives and reads this weight signal 17, it is amplified by the amplifier 13 and converted by the A / D converter 14, and After being processed by the programmable logic controller 15 and the central processing unit 16, the output is displayed on a display and / or printed by a printer. The two sampling discrimination switches 2 and 3 installed on the boom frame 1 can accurately determine the rising and falling positions of the bucket 12 during loading. When the bucket 12 rises, one sampling discrimination switch 2 is closed first. When the two sample-like discrimination switches 2 and 3 are closed at the same time, the logic circuit generates a rising signal 18, and at this time, the central processing unit 16 processes the collected rising weight signal 17. When the bucket 12 descends, one sampling discrimination switch 3 is closed first. When two sampling discrimination switches 2 and 3 are closed at the same time, the logic circuit generates a descending signal 18, and the central processing unit 16 processes the collected descending weight signal 17 .
本发明的装载机电子秤还利用模糊算法对各种称量速度下的数据进行修 正以保证其精确度。 此外，如果需要还利用转储卡将有关装载机的称重信息转 存到 PC机中进行处理及查询。  The loader electronic scale of the present invention also uses fuzzy algorithms to correct data at various weighing speeds to ensure its accuracy. In addition, if needed, use the dump card to transfer the loader's weighing information to the PC for processing and query.

Claims

权利要求书 Claim
1、 一种装载机电子秤， 利用装载机铲斗、 动臂和动臂架， 其特征在于 包括传感器、采样判别开关和信号处理装置， 其中， 所述的轴销电阻应变式传 感器安装在装载才几的动臂的轴孔内，采样判别开关安装在动臂架上，信号处理 装置与采样判别开关及轴销电阻应变式传感器相连。 1. An electronic loader scale using a loader bucket, a boom and a boom stand, characterized in that it includes a sensor, a sampling discrimination switch and a signal processing device, wherein the shaft pin resistance strain sensor is mounted on the load In the shaft hole of the boom, the sampling discrimination switch is installed on the boom frame, and the signal processing device is connected to the sampling discrimination switch and the shaft pin resistance strain sensor.
2、 根据权利要求 1所述的装载机电子秤， 其特征在于在装载机的每一 动臂的轴孔内均 装一个轴销电阻应变式传感器。  2. The loader electronic scale according to claim 1, characterized in that a shaft pin resistance strain sensor is installed in the shaft hole of each boom of the loader.
3、 根据权利要求 1所述的装载机电子秤， 其特征在于在装载机的动臂 架上安装二个采冲羊判别开关， 二者之间的距离为 30 ~ 40毫米。  3. The loader electronic scale according to claim 1, wherein two load-distributing sheep discrimination switches are installed on the boom frame of the loader, and the distance between the two is 30-40 mm.
4、 根据权利要求 3所述的装载机电子秤， 其特征在于所述的采样判别 开关由霍尔开关或接近开关构成。  4. The loader electronic scale according to claim 3, wherein the sampling discrimination switch is formed by a Hall switch or a proximity switch.
5、 根据 利要求 2所述的装载机电子秤， 其特征在于在轴销传感器的 形状为轴销式， 内贴有电阻应变片，有电源和信号引出线与信号处理装置的放 大器相连。  5. The loader electronic scale according to claim 2, characterized in that the shape of the shaft pin sensor is a shaft pin type, a resistance strain gauge is attached inside, and a power source and a signal lead-out line are connected to the amplifier of the signal processing device.
6、 根据 利要求 1所述的装载机电子秤， 其特征在于在轴销传感器的 轴线位置上开有、由槽， 油槽的一端有油杯接口， 油槽的另一端有出油孔。  6. The loader electronic scale according to claim 1, characterized in that a shaft groove is provided on the axis position of the shaft pin sensor, one end of the oil groove has an oil cup interface, and the other end of the oil groove has an oil outlet.
7、 根据 利要求 6所述的装载机电子秤， 其特征在于油槽为 L形。 根据权利要求 1 所述的装载机电子秤， 其特征在于信号处理装置由放大 器、 A/D转换器、 可编程序逻辑器和中央处理器构成， 其中可编程序逻辑器的 第 20脚与 + 5V 源相连， 第 1脚和笫 19脚相连， 第 3脚与一个采样判别开 关相连， 第 4脚与另一个采样判别开关相连， 第 5脚与中央处理器的输出信号 接口相连， 第 15脚与中央处理器的输入信号接口相连， 第 1 1脚和第 12脚相 连、接 + 5V电源， 第 1 3脚和 14脚相连， 第 1 0脚接地，放大器的输出脚和 A/D 转换器的输入脚矛目连， A/D转换器的输出脚与中央处理器的数据总线相连。  7. The loader electronic scale according to claim 6, wherein the oil tank is L-shaped. The loader electronic scale according to claim 1, characterized in that the signal processing device comprises an amplifier, an A / D converter, a programmable logic controller, and a central processing unit, wherein the 20th pin of the programmable logic controller and the + The 5V source is connected, pin 1 is connected to pin 19, pin 3 is connected to a sampling discrimination switch, pin 4 is connected to another sampling discrimination switch, pin 5 is connected to the output signal interface of the central processing unit, pin 15 It is connected to the input signal interface of the central processing unit. Pins 11 and 12 are connected to + 5V power supply. Pins 13 and 14 are connected. Pin 10 is grounded. The amplifier's output pin and A / D converter The input pins of the A / D converter are connected to the data bus of the central processing unit.
PCT/CN2004/000757 2003-10-22 2004-07-06 A loader electro-balance WO2005038417A1 (en)

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DE202004020704U1 (en) 2006-04-27

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