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    • 1. 发明授权
    • Hydraulic elevator and a control method thereof
    • 液压升降机及其控制方法
    • US5285027A
    • 1994-02-08
    • US843163
    • 1992-02-28
    • Ichiro NakamuraHaruo WatanabeTsuyoshi OgasawaraKatsuharu ShutoEiichi Sasaki
    • Ichiro NakamuraHaruo WatanabeTsuyoshi OgasawaraKatsuharu ShutoEiichi Sasaki
    • B66B1/00B66B1/04B66B1/26B66B9/04F15B11/00
    • B66B1/24
    • A hydraulic elevator comprises a car, a hydraulic jack to drive the car, a hydraulic pump, and control means for controlling a flow rate of fluid flowing to or from the hydraulic jack thereby to control movement of the car. The control means comprises a main valve constructed so as to allow fluid the flow from the pump into the hydraulic jack when a pressure of the fluid is higher than a predetermined value thereby to effect upward running of the car, and to check a fluid flow from the hydraulic jack when the pressure of the fluid from the pump is less than the predetermined value, and valve control means including a plurality of pilot valves for controlling, when the pressure of the fluid from the pump is less than the value, the main valve to open and close, and wherein the valve control means controls the closing operation of the main valve along at least two different patterns.
    • 液压升降机包括轿厢,用于驱动汽车的液压千斤顶,液压泵以及用于控制流入或流出液压千斤顶的流体流量的控制装置,从而控制汽车的运动。 控制装置包括主阀,其构造成当流体的压力高于预定值时允许流体从泵进入液压千斤顶的流体,从而实现汽车的向上运动,并且检查来自 当来自泵的流体的压力小于预定值时的液压千斤顶,并且阀控制装置包括多个先导阀,用于当来自泵的流体的压力小于该值时控制主阀 以打开和关闭,并且其中所述阀控制装置沿至少两种不同的模式控制所述主阀的关闭操作。
    • 2. 发明授权
    • Elevator with means for controlling upward and downward movement of cage
    • 电梯具有控制笼的向上和向下运动的装置
    • US5265701A
    • 1993-11-30
    • US848134
    • 1992-03-09
    • Tsuyoshi OgasawaraIchiro NakamuraHaruo WatanabeMasayuki ShigetaMasakatsu Tanaka
    • Tsuyoshi OgasawaraIchiro NakamuraHaruo WatanabeMasayuki ShigetaMasakatsu Tanaka
    • B66B11/08B66B1/32B66B5/18B66B11/04B66B1/24
    • B66B5/18B66B1/32
    • In an elevator, for controlling the upward and downward movement of a cage, a shoe is brought into and out of pressing contact with a drum or a disk of a brake by a combination of a spring and a hydraulic cylinder. The optimum braking force is determined in accordance with the inertial mass and the speed of the cage to be braked, and the fluid pressure is controlled to control the force of pressing of the shoe against the drum or the disk, so that the brake can always produce the optimum braking force. A controller for controlling the pressure of the hydraulic cylinder is operated by an emergency power source. The brake can be controlled with a high responsibility and its braking force can be controlled arbitrarily, and even in the event of a power failure, the brake can be operated by the emergency power source of a small-capacity. Therefore, in the normal condition, the cage can be held accurately in its stop position, and in the event of an emergency, the optimum braking force is produced in accordance with the load and the speed of the cage, and the shortest braking distance can be achieved with a small braking impact.
    • 在电梯中,为了控制保持架的向上和向下运动,通过弹簧和液压缸的组合,使鞋与鼓或制动盘的压力接触和脱离。 最佳制动力根据惯性质量和待制动保持架的速度来确定,并且控制流体压力以控制鞋抵靠滚筒或盘的压力,使制动器始终 产生最佳制动力。 用于控制液压缸的压力的控制器由应急电源操作。 可以高度责任地控制制动器,并且可以任意地控制其制动力,并且即使在停电的情况下,也可以通过小容量的应急电源来操作制动器。 因此,在通常情况下,保持架能够精确地保持在其停止位置,并且在紧急情况下,根据轿厢的负载和速度产生最佳制动力,并且最短的制动距离可以 可以实现小制动冲击。
    • 4. 发明授权
    • Direct drive type servo valve
    • 直驱型伺服阀
    • US4428559A
    • 1984-01-31
    • US267914
    • 1981-05-28
    • Ken IchiryuHaruo WatanabeIchiro NakamuraYoshimichi Akasaka
    • Ken IchiryuHaruo WatanabeIchiro NakamuraYoshimichi Akasaka
    • F15B13/044F15B13/04F16K11/07F16K31/04
    • F15B13/04F16K11/0704Y10T137/86622
    • A direct drive type servo motor in which a spool is driven directly by a force motor, the force of the force motor being balanced by the reactional force generated by a resilient member to stabilize the position of the spool to control the flow of working fluid. The resilient member is constituted by a metallic cylindrical member having holes formed in the outer peripheral surface thereof. The holes are arranged such that, when the force is applied to the cylindrical member in the axial direction, the cylindrical member produces an axial reactional force. In consequence, the generation of force component which would act to press the spool against the sleeve is avoided to reduce the friction between the spool and the sleeve to permit a smooth movement of the spool, while allowing the resilient member to have a high spring constant to improve the response characteristic of the servo valve.
    • 一种直接驱动型伺服电动机,其中线轴由力马达直接驱动,力马达的力由弹性构件产生的反作用力平衡,以稳定卷轴的位置以控制工作流体的流动。 弹性构件由在其外周面形成有孔的金属圆筒构件构成。 这些孔被布置成使得当沿轴向方向将力施加到圆柱形构件时,圆柱形构件产生轴向反作用力。 因此,避免了将作用以将线轴压靠套筒的力分量的产生,以减小线轴和套筒之间的摩擦,以允许线轴的平稳移动,同时允许弹性构件具有高的弹簧常数 提高伺服阀的响应特性。
    • 5. 发明授权
    • Hydraulic operating apparatus
    • 液压操作装置
    • US4404892A
    • 1983-09-20
    • US217844
    • 1980-12-18
    • Ichiro NakamuraMitsuaki TakenoshitaKen IchiryuYoshimichi AkasakaHaruo Watanabe
    • Ichiro NakamuraMitsuaki TakenoshitaKen IchiryuYoshimichi AkasakaHaruo Watanabe
    • H01H33/34F15B15/22
    • H01H33/34H01H2033/308
    • A hydraulic operating apparatus including an actuating cylinder having a piston arranged therein and moved by a fluid under high pressure further includes a control valve having only one metallic seal whether the piston is at its upper or lower positions. The control valve is operative to apply the fluid under high pressure to a pressure receiving surface of the piston on the opposite side of a piston rod to move the piston in a direction in which the piston rod extends from the piston and to discharge the fluid existent on the opposite side of the piston rod from the actuating cylinder to move the piston in a direction opposite the direction in which the piston rod extends from the piston. The hydraulic operating apparatus further includes a seal for dividing the pressure receiving surface of the piston on the opposite side of the piston rod into first and second pressure receiving surface sections, the first pressure receiving surface section having an effective pressure receiving area smaller than that of a pressure receiving surface of the piston on the side of the piston rod.
    • 包括具有布置在其中并由高压下的流体移动的活塞的致动缸的液压操作装置还包括仅活塞处于其上部或下部位置的只有一个金属密封件的控制阀。 控制阀可操作以将高压流体施加到活塞杆的相对侧上的受压表面,以使活塞沿活塞杆从活塞延伸的方向移动并排出存在的流体 在活塞杆的与驱动气缸相反的一侧上,使活塞沿与活塞杆从活塞延伸的方向相反的方向移动。 液压操作装置还包括用于将活塞杆的相对侧的活塞的受压面分成第一和第二受压面部分的密封件,第一受压面部分的有效压力接收面积小于 在活塞杆一侧的活塞的受压面。