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    • 11. 发明授权
    • Auto zero circuit
    • 自动归零电路
    • US4071102A
    • 1978-01-31
    • US727110
    • 1976-09-27
    • Ron Van OstenbridgeMichael E. Sturgeon
    • Ron Van OstenbridgeMichael E. Sturgeon
    • G01G11/00G01G11/04G01G13/14G01G23/14
    • G01G11/006G01G11/046
    • Apparatus for generating a belt tare compensation signal including a load cell in operative contact with a feed conveyor belt dividable into N equal segments. The output of the load cell is strobed each time the conveyor belt advances one sampled and a pulse train representative of the output of the load cell is generated. The pulse train is applied to a pulse counter if the output of the load cell is greater than a predetermined value and is applied to a minus counter if the output of the load cell is less than a predetermined value. At the end of a single revolution of the conveyor belt, a signal representative of the difference between the count in the plus and minus counters is generated. This signal is divided by N so as to generate a belt tare compensation signal which is representative of the average output of the load cell during a single non-loaded revolution of the conveyor belt.
    • 一种用于产生皮带皮重补偿信号的装置,包括与可分成N个等分段的进给传送带可操作地接触的称重传感器。 每当传送带前进一个采样时,称重传感器的输出被选通,产生代表传感器的输出的脉冲串。 如果称重传感器的输出大于预定值,脉冲计数器被施加到脉冲计数器,并且如果称重传感器的输出小于预定值,则施加到减号计数器。 在传送带的单次旋转结束时,产生表示正计数器和减号计数器之间的计数之间的差异的信号。 该信号除以N,以产生皮带皮重补偿信号,其表示传送带单次无负载转动期间称重传感器的平均输出。
    • 12. 发明授权
    • Conveyor scale calibration
    • 输送秤刻度
    • US3899915A
    • 1975-08-19
    • US41365773
    • 1973-11-07
    • RELIANCE ELECTRIC CO
    • WILLIAMS JR ROGER BLOSHBOUGH RICHARD CCHERRY RICHARD A
    • G01G11/00G01G23/00
    • G01G11/006
    • Apparatus and a method for calibrating a conveyor scale which measures at least the rate at which material is carried through a region by a conveyor. The scale is of a type which generates a first electric signal corresponding to the speed of the conveyor, a second electric signal corresponding to the material weight within the region and from these signals generates a third signal corresponding to the material transfer rate. During calibration of the conveyor scale, an electric signal is generated to correspond to a simulated conveyor speed. The simulated speed signal is used in combination with a predetermined weight signal for obtaining a transfer rate signal. The weight signal is generated either by placing the predetermined weight on the stopped conveyor or by an electric signal generator which simulates the predetermined weight. The conveyor scale is then calibrated such that the indicated transfer rate corresponds to an actual transfer rate determined from the simulated conveyor speed and the predetermined material weight. The apparatus and method also may be used to calibrate a conveyor scale which measures the total weight of material transferred over a period of time.
    • 用于校准输送机秤的装置和方法,其至少测量通过输送机将材料运送到区域的速率。 刻度是产生对应于输送机速度的第一电信号的类型,对应于该区域内的材料重量的第二电信号,并且从这些信号产生对应于材料传送速率的第三信号。 在输送机秤的校准期间,产生电信号以对应于模拟的输送机速度。 模拟速度信号与预定加权信号组合使用以获得传送速率信号。 重量信号是通过将预定的重量放在停止的输送机上或通过模拟预定重量的电信号发生器来产生的。 然后校准传送机秤,使得指定的传送速率对应于从模拟的传送速度和预定的材料重量确定的实际传送速率。 该装置和方法还可用于校准测量在一段时间内转移的材料的总重量的输送机秤。
    • 13. 发明授权
    • Weighing scale system for a conveyor with footage counter for improved calibration
    • 用于改进校准的输送机称重系统
    • US3559451A
    • 1971-02-02
    • US3559451D
    • 1969-12-22
    • CUTLER HAMMER INC
    • HYER FRANK SKAROSAS RAYMOND
    • G01G11/00G01G11/14
    • G01G11/006
    • AN INTEGRATING SYSTEM FOR INDICATING THE TOTAL WEIGHT OF MATERIAL THAT HAS BEEN MOVED BY AN ENDLESS BELT-CONVEYOR OVER A WEIGHING SCALE. THE SYSTEM MUST PERIODICALLY BE RE-CALIBRATED FOR "ZERO" AND "SPAN" DUE TO A NUMBER OF VARIABLES SUCH AS NONUNIFORMITY OF THE BELT, MATERIAL STICKING TO THE BELT, ETC. A PREDETERMINING FOOTAGE COUNTER IS MANUALLY PRESET TO THE TOTAL NUMBER OF FEET REQUIRED FOR THE CALIBRATION RUN. THIS COUNTER COUNTS DOWNWARDS AND WHEN IT COUNTS OUT, IT STOPS THE OUTPUT TO THE WEIGHT TOTALIZER. THE SYSTEM IS FIRST RUN FOR A ZERO CALIBRATION AND IF THE READING IS OFF, THE ZERO ADJUSTING DEVICE IS TURNED IN THE PROPER DIRECTION UNTIL THE READING IS CLOSE ENOUGH ON A RERUN. THE SYSTEM IS THEN RUN FOR A SPAN CALIBRATION AND IF THE READING IS OFF, THE NON-INTERACTING SPAN ADJUSTING DEVICE IS TURNED IN THE PROPER DIRECTION UNTIL THE READING IS CLOSE ENOUGH ON A RE-RUN. IN EACH CASE, THE FOOTAGE COUNTER PRECISELY CONTROLS THE AMOUNT OF CONVEYOR FOOTAGE THAT IS TOTALIZED TO AVOID LABORIOUS MANUAL MEASUREMENT AND COMPUTATION. OTHER FEATURES SUCH AS RATE INDICATION, LOW LEVEL DETECTION, CLOSED LOOP CONTROLS AND TIMED INTERLOCKING BETWEEN THE INTEGRATOR OUTPUT AND THE CONVEYOR MOTOR CONTROL, AND THE LIKE, ARE INCORPORATED INTO THE SYSTEM.
    • 15. 发明申请
    • HIGH PRECISION BELT WEIGHING DEVICE AND METHOD
    • 高精度皮带称重装置及方法
    • US20130219985A1
    • 2013-08-29
    • US13865183
    • 2013-04-17
    • Saimo Electric Company Limited
    • DA LIZHILIANG LIUFUSHENG HEXINGGUO ZHANGZHEN HUDEQIANG ZHANG
    • G01G23/01
    • G01G23/01G01G11/003G01G11/006
    • Various embodiments provide a high precision belt weighing device and a high precision belt weighing method. An exemplary high precision belt weighing device includes a set of buffer carrier rollers provided between a first and second belt weighing scale frames. A volume scale hopper is provided above the set of buffer carrier rollers. A transfer conveyor is provided above the volume scale hopper. The first and second belt weighing scale frames, the volume scale hopper, an initial point detector, and a speedometer are connected with a weighing control instrument by cables. Cumulative weights of bulk materials handled by each of the first and second belt weighing scale frames, the corrected weight of bulk materials in the volume scale hopper, and a zero point in the length of a conveying belt detected by the initial point detector are displayed on the weighing control instrument.
    • 各种实施例提供高精度皮带称重装置和高精度皮带称重方法。 示例性的高精度皮带称重装置包括设置在第一和第二皮带称重秤框架之间的一组缓冲载体辊。 在一组缓冲支承辊上方设有体积秤斗。 传送输送机设置在容积刻度漏斗上方。 第一和第二皮带称重秤,体积秤斗,初始点检测器和速度计通过电缆与称重控制仪器连接。 由第一和第二皮带称重秤架中的每一个处理的散装材料的累积重量,体积秤斗中的散装材料的校正重量以及由初始点检测器检测到的输送带长度的零点显示在 称重控制仪表。
    • 18. 发明授权
    • System for checking the calibration of gravimetic feeders and belt scales
    • 用于检查重力馈线和皮带秤的校准系统
    • US5877456A
    • 1999-03-02
    • US898211
    • 1997-07-22
    • John C. Homer, IIIJ. Ronald WalshDavid P. Ratcliffe
    • John C. Homer, IIIJ. Ronald WalshDavid P. Ratcliffe
    • G01G23/01G01G11/00G01G19/52
    • G01G11/006
    • There is provided an system and method for calibrating weigh assemblies of bulk material feeders using test chains of known weight and pitch. In particular, the present invention is a calibration checking system for a belt-type gravimetric feeder or conveyor having a weigh span section and comprises a continuous conveyor belt, at least one pair of support rollers and at least one weigh roller. A particular weigh roller is disposed under an upper strand of the conveyor belt and equidistant from each of the support rollers so that they are in planar alignment with one another. The calibration checking assembly also comprises a test chain having a chain pitch that is integrally divisible into the pitch of the weigh span section. In addition, portions of the conveyor belt on both sides of the weigh span are inclined equally at a single particular angle relative to the weigh span section. The calibration checking system further comprises a pair of load cells coupled to the ends of the weigh roller and a processor coupled to the loads cells for determining an optimal elevation for the weigh roller. The load cells and processor detect belt tension of the conveyor belt and analyze weigh load in relation to the belt tension.
    • 提供了一种使用已知重量和间距的测试链校准散装材料进料器的称重组件的系统和方法。 特别地,本发明是一种用于带式重力给料机或输送机的校准检查系统,其具有重量跨度部分,并且包括连续输送带,至少一对支撑辊和至少一个称重辊。 特定的称重辊设置在输送带的上股线下方并且与每个支撑辊等距离,使得它们彼此平面对准。 校准检查组件还包括测试链,其具有可整体分割成称重跨度部分的间距的链节距。 此外,输送带在称重跨度两侧的部分相对于称重跨度部分以相同的特定角度倾斜。 校准检查系统还包括耦合到称重辊的端部的一对称重传感器和耦合到负载单元的处理器,用于确定称重辊的最佳仰角。 称重传感器和处理器检测输送带的皮带张力,并分析与皮带张力相关的称重载荷。
    • 19. 发明授权
    • System for checking the calibration of gravimetric feeders and belt
scales
    • 用于检查重量进料器和皮带秤的校准的系统
    • US5686653A
    • 1997-11-11
    • US647117
    • 1996-05-09
    • John C. Homer, IIIJ. Ronald WalshDavid P. Ratcliffe
    • John C. Homer, IIIJ. Ronald WalshDavid P. Ratcliffe
    • G01G23/01G01G11/00
    • G01G11/006
    • There is provided an system and method for calibrating weigh assemblies of bulk material feeders using test chains of known weight and pitch. In particular, the present invention is a calibration checking system for a belt-type gravimetric feeder or conveyor having a weigh span section and comprises a continuous conveyor belt, at least one pair of support rollers and at least one weigh roller. A particular weigh roller is disposed under an upper strand of the conveyor belt and equidistant from each of the support rollers so that they are in planar alignment with one another. The calibration checking assembly also comprises a test chain having a chain pitch that is integrally divisible into the pitch of the weigh span section. In addition, portions of the conveyor belt on both sides of the weigh span are inclined equally at a single particular angle relative to the weigh span section. The calibration checking system further comprises a pair of load cells coupled to the ends of the weigh roller and a processor coupled to the loads cells for determining an optimal elevation for the weigh roller. The load cells and processor detect belt tension of the conveyor belt and analyze weigh load in relation to the belt tension.
    • 提供了一种使用已知重量和间距的测试链来校准散装材料进料器的称重组件的系统和方法。 特别地,本发明是一种用于带式重力给料机或输送机的校准检查系统,其具有重量跨度部分,并且包括连续输送带,至少一对支撑辊和至少一个称重辊。 特定的称重辊设置在输送带的上股线下方并且与每个支撑辊等距离,使得它们彼此平面对准。 校准检查组件还包括测试链,其具有可整体分割成称重跨度部分的间距的链节距。 此外,输送带在称重跨度两侧的部分相对于称重跨度部分以相同的特定角度倾斜。 校准检查系统还包括耦合到称重辊的端部的一对称重传感器和耦合到负载单元的处理器,用于确定称重辊的最佳仰角。 称重传感器和处理器检测输送带的皮带张力,并分析与皮带张力相关的称重载荷。