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    • 6. 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。
    • 8. 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。