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1. 发明授权

US3827339A Double acting hydraulic pump 失效
标题翻译：双动液压泵
公开(公告)号：US3827339A
公开(公告)日：1974-08-06
申请号：US14405571
申请日：1971-05-17
申请人： NORDSON CORP
发明人： ROSEN S , ROOD A , SCHARF D
IPC分类号： F01B11/00 , F01B23/08 , F01B31/00 , F01B31/02 , F01L25/06 , F04B9/125 , F04B53/12 , F04B53/16 , F01B7/00
CPC分类号： F01B31/02 , F01B11/00 , F01B23/08 , F01B31/005 , F01L25/063 , F04B9/125 , F04B53/126 , F04B53/164
摘要： A double acting hydraulic pump and air motor therefor including means for controlling the inlet and exhaust of air to and from the opposite sides of the piston in the air cylinder. The pump has a stepped diameter housing including an upper pump cylinder defining an outlet chamber for liquid and a lower pump cylinder received within the upper pump cylinder and defining an inlet chamber for liquid. A pump piston reciprocates in the two cylinders and is slidably received in two axially spaced stationary packing sleeves having a resilient spacer sleeve interposed axially therebetween. The spacer sleeve is formed of metal sheet adapted to deflect resiliently under load. The upper end of the upper pump cylinder is received within a recess in the lower end of the air motor housing. A retainer plate connected to the lower end of the air motor housing is provided with an opening to allow passage of the upper end of the upper pump cylinder and a pair of radially extending ears thereon. The pump housing is rotatable about its own longitudinal axis to align or misalign the ears and the opening and retain the pump housing to or release it from the motor housing.
摘要翻译：一种双作用液压泵及其气动马达，包括用于控制空气进入和排出空气的活塞在气缸中的两侧的装置。泵具有阶梯形直径壳体，其包括限定用于液体的出口室的上泵缸和容纳在上泵缸内的下泵缸，并限定用于液体的入口室。泵活塞在两个气缸中往复运动，并且可滑动地容纳在两个轴向间隔开的固定衬垫套筒中，该固定衬套具有轴向介于其间的弹性间隔套筒。间隔套筒由适于在负载下弹性偏转的金属板形成。上泵筒的上端容纳在气动马达壳体的下端的凹部内。连接到空气马达壳体的下端的保持板设置有允许上泵筒的上端和一对径向延伸的耳朵通过的开口。泵壳体可围绕其自身的纵向轴线旋转以使耳朵和开口对准或不对准，并且将泵壳体保持或从电机壳体释放。

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