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    • 6. 发明授权
    • Control method for multi-strand rolling mill
    • 多股轧机控制方法
    • US4457154A
    • 1984-07-03
    • US480090
    • 1983-04-04
    • Koichi Ohba
    • Koichi Ohba
    • B21B1/18B21B13/00B21B37/52B21B1/20B21B37/08
    • B21B37/52B21B1/18B21B2013/006
    • When two strand workpieces pass through a roll opening between two grooved working rolls on a roll stand so as to be rolled, the trailing end of one of them may leave the rolls and cause change in the roll separation. At that time mating bilateral screw-down devices are remotely controlled to adjust the roll opening at least at the position of the remaining workpiece. Alternatively in a multi-strand tandem rolling mill, the rolling speeds on roll stands upstream of a roll stand which one of the strand workpieces has left are changed by a speed ratio of (1-b.sub.2)/(1-b.sub.1) where b.sub.1 and b.sub.2 respectively designate rates of backward slip when two strand workpieces are being rolled and in the absence of one of the strand workpieces from the last-mentioned roll stand. Alternatively the roll speeds on roll stands downstream of the roll stand which one of the strand workpieces has left may be changed by a speed ratio of (1+f.sub.2)/(1+f.sub.1) where f.sub.1 and f.sub.2 respectively designate rates of forward slip corresponding to the rates of backward slip b.sub.1 and b.sub.2.
    • 当两个工件穿过辊架上的两个带槽的工作辊之间的辊开口以轧制时,其中一个的后端可能离开辊并导致辊分离的变化。 此时,配合的双向拧紧装置被远程控制,以便至少在剩余工件的位置处调节滚动开口。 或者,在多股串联轧机中,轧辊的轧制速度在轧制机架的上游位置,其中一个轧制工件已经留下,转速比为(1-b2)/(1-b1),其中b1和 b2分别表示当两个线材工件被轧制时的向后滑移的速度,以及在不存在来自最后提到的辊架的一个绞合工件的情况下。 或者,轧辊上的轧辊速度可以在(1 + f2)/(1 + f1)的转速比改变轧辊机架的其中一个绞合工件已经离开的下游,其中f1和f2分别表示相应的向前滑移速率 到落差b1和b2的速率。
    • 7. 发明授权
    • Method of controlling a shape of a rolled sheet
    • 控制轧制板的形状的方法
    • US4199967A
    • 1980-04-29
    • US958393
    • 1978-11-07
    • Shinichi IkemiKoichi Ohba
    • Shinichi IkemiKoichi Ohba
    • B21B37/30B21B13/14B21B27/10B21B37/00B21B37/38B21B37/06
    • B21B37/38B21B2027/103
    • The forward slip and the backward slip at a first stand are dependant upon a draft, the back tension, the front tension, and the shape of a sheet in a tandem type rolling mill. It is difficult to control the shape solely by detecting the tension distribution between the last stand and the tension reel.In the method of this invention, the shape of a rolled sheet is controlled by disposing a first shape meters between the pay-off reel and the first stand and a second shape meter between the last stand and the tension reel whereby shape control can be attained through a simple system.Tension distributions detected by the two shape meters are functions of the forward slip and the backward slip. Accordingly the forward slips and the backward slips at all other stands except the first and last stands need not be considered when the tension distributions between the pay-off reel and the first stand and between the last stand and the tension reel are detected and the sums of these tension distributions produce a desired pattern. The shape control is attained by disposing a first shape meter at the input side of the first stand and a second shape meter at the output side of the last stand and by controlling the roll bending force and/or a roll coolant available at each stand so as to produce the sum in the desired pattern.
    • 第一台上的向前滑移和向后滑动取决于串联式轧机中的牵伸,后拉力,前张力和板形。 仅通过检测最后的支架和张力卷轴之间的张力分布来控制形状是困难的。 在本发明的方法中,通过在发放卷轴和第一台架之间设置第一形状计量器和在最后的支架和张力卷轴之间设置第二形状计量器来控制轧制板材的形状,从而可以实现形状控制 通过一个简单的系统。 由两个形状计测得的张力分布是前滑和后滑的函数。 因此,当检测到发放卷轴和第一支架之间以及最后的支架和张力卷轴之间的张力分布时,不需要考虑除了第一和最后支架之外的所有其他支架上的向前滑动和向后滑动, 的这些张力分布产生期望的图案。 通过在第一支架的输入侧设置第一形状计量器和在最后一个支架的输出侧设置第二形状计量器并且通过控制每个支架处的辊弯曲力和/或辊冷却剂来实现形状控制,从而 以产生所需模式的总和。
    • 8. 发明授权
    • Electromagnetic operating device
    • 电磁操作装置
    • US06968859B1
    • 2005-11-29
    • US10416063
    • 2000-11-14
    • Taku NaganoKoichi OhbaYasuyuki ShinguKenichi Hirano
    • Taku NaganoKoichi OhbaYasuyuki ShinguKenichi Hirano
    • F16K31/06F16K31/72H01F7/16H01F7/18
    • F16K31/0679H01F7/1607H01F7/1827H01F7/1833H01F7/1877H01F2007/1692H01F2007/1888Y10T137/8242
    • Disclosed is a solenoid type electromagnetic operating device which needs a relatively large current only for a limited short period at an excitation start initial stage and is adapted to achieve the speeding up at an excitation start stage and an improvement in responsiveness as well as power saving without increasing a power load on each of a drive circuit and power supply. The device is used for exerting a mechanical output on a valve element against a spring force, and comprises a solenoid coil composed of a plurality of split coils mutually electrically independent, an iron core structure including a fixed core, a movable core and a yoke and assembled with the solenoid coil so as to form a magnetic path loop through which magnetic fluxes from the split coils pass in common, an excitation controller for selectively switching/controlling the excitation current to each split coil, and a transmission mechanism for transmitting the mechanical output based on the displacement of the movable core magnetically attracted to the fixed core to the valve element when one or more of the split coils are excited.
    • 公开了一种螺线管式电磁操作装置,其仅在激励开始初始阶段仅在有限的短时间内需要相对较大的电流,并且适于在励磁起始阶段实现加速并且提高响应性以及省电而没有 增加每个驱动电路和电源上的功率负载。 该装置用于抵抗弹簧力在阀元件上施加机械输出,并且包括由多个彼此电独立的分离线圈组成的螺线管线圈,包括固定铁芯,可动铁芯和轭铁的铁芯结构, 与螺线管线圈组装在一起形成一个磁路回路,来自分离线圈的磁通通过该磁路环路,用于选择性地切换/控制每个分离线圈的励磁电流的励磁控制器,以及用于传输机械输出的传动机构 基于当一个或多个分离线圈被激励时磁力吸引到固定铁芯的可动铁芯的位移到阀元件。
    • 9. 发明授权
    • Hydraulic power system
    • 液压动力系统
    • US06748739B1
    • 2004-06-15
    • US10031016
    • 2002-01-10
    • Kenichi HiranoToshio HashimotoShiro HattoriKoichi Ohba
    • Kenichi HiranoToshio HashimotoShiro HattoriKoichi Ohba
    • F16D3102
    • F04B49/06F04B2203/0201F04B2203/0209F04B2207/0421F04B2207/0422
    • A hydraulic power system includes a reversible pump, a variable-speed servomotor for driving the pump, a pressure sensor for detecting load pressure, a detector for detecting the motor speed, signal command units for generating preprogrammed pressure and flow rate commands, a rotational speed controller and a signal processor. The signal processor preferentially outputs a speed command corresponding to the flow rate command by a limiter operation when the difference signal between the pressure command and the pressure detection signal is higher than a predetermined level, whereas it preferentially outputs a speed command corresponding to the difference signal when the difference signal is equal to or lower than said level. The rotational speed controller controls the magnitude of a driving current supplied to the servomotor by a closed loop on the basis of the speed command and the detected signal so that the speed of the servomotor corresponds to the speed command.
    • 液压动力系统包括可逆泵,用于驱动泵的变速伺服电动机,用于检测负载压力的压力传感器,用于检测电动机速度的检测器,用于产生预编程压力和流量命令的信号命令单元,转速 控制器和信号处理器。 当压力指令和压力检测信号之间的差信号高于预定电平时,信号处理器优先通过限制器操作输出与流量指令相对应的速度指令,而优先输出与差信号相对应的速度指令 当差信号等于或低于所述电平时。 旋转速度控制器根据速度指令和检测信号,通过闭环控制提供给伺服电动机的驱动电流的大小,使得伺服电机的速度对应于速度指令。