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1. 发明授权

US3979909A Hydraulic actuator 失效
标题翻译：液压执行机构
公开(公告)号：US3979909A
公开(公告)日：1976-09-14
申请号：US648496
申请日：1976-01-12
申请人： Kenneth Herbert Meyer , William Elisa Heese
发明人： Kenneth Herbert Meyer , William Elisa Heese
IPC分类号： F15B15/08 , F15B15/18 , F15B21/00
CPC分类号： F15B15/065 , F15B15/18 , Y10S60/916
摘要： A rotary hydraulic actuator adapted to be mounted as on the stationary kingpin fixed on the deck of a self-unloading bulk cargo ship for slewing of a conveyor boom having its foot pivotally connected to oppositely extending horizontal trunnions on the actuator, said actuator being characterized by its unitized construction in which the gear housing is journalled on a gear keyed on said kingpin and which has pairs of parallel cylinders extending in opposite directions from the gear housing for actuating gear racks which mesh with said gear. Said actuator is further characterized in that extending longitudinally in opposite directions from the gear housing between the respective pairs of cylinders is a hydraulic oil tank and a weatherproof power pack assembly (or hydraulic actuating system) operatively connected with the tank and including a hydraulic pump and drive motor therefor and valves to control flow of fluid under pressure to selected cylinders for rotation of said actuator in desired boom-slewing direction.For a large size actuator of the character indicated, the complete assembly is of such great length and width as not to be transportable by truck or rail from the manufacturer's plant to the shipyard or other location and hence, in the unitized construction herein only the trunnion mountings are detached for shipping purposes without disturbing the hydraulic system components and piping whereby the remaining unitized structure, while of relatively great length, is then sufficiently narrow so as to be conveniently shippable to the shipyard or other location by rail or truck whereat the trunnion mountings may be bolted in place and seal-welded to opposite sides of the gear housing without disturbing the hydraulic system.
摘要翻译：一种旋转液压致动器，其适于安装在固定在自卸式大容量货船的甲板上的固定式主销上，用于回转其输送臂，其输送臂具有枢转地连接到致动器上相对延伸的水平耳轴，所述致动器的特征在于其组合结构，其中齿轮壳体轴颈安装在与所述主销相对的齿轮上，并且具有成对的平行气缸，其从齿轮壳体沿相反方向延伸，用于致动与所述齿轮啮合的齿条。所述致动器的特征还在于，在相应的缸对之间从齿轮壳体沿相反方向纵向延伸的是液压油箱和与油箱可操作地连接并包括液压泵的防水动力组件（或液压致动系统）驱动电动机和阀，以控制压力下的流体流动到所选择的气缸，以在所需的动臂 - 回转方向上旋转所述致动器。

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