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1. 发明申请

US20120324880A1 ELECTRIC-HYDRAULIC HYBRID DRIVER 审中-公开
标题翻译：电动液压驱动器
公开(公告)号：US20120324880A1
公开(公告)日：2012-12-27
申请号：US13521098
申请日：2011-06-23
申请人： Norihiro Kuzuu , Kenta Miyazaki , Yukio Imai , Toshiharu Kubota
发明人： Norihiro Kuzuu , Kenta Miyazaki , Yukio Imai , Toshiharu Kubota
IPC分类号： F15B1/02
CPC分类号： F15B7/10 , F15B2211/20561 , F15B2211/27 , F15B2211/4159 , F15B2211/7053
摘要： The present invention provides an apparatus for electrically and hydraulically driving a hydraulic cylinder, including a hydraulic pump rotatable in opposite directions, an electric motor for driving the hydraulic pump, a reservoir tank containing hydraulic fluid therein, and a servo-valve. The hydraulic cylinder makes fluid-communication at a head-sided hydraulic chamber with a first port of the hydraulic pump, and makes fluid-communication at a rod-sided hydraulic chamber with a second port of the hydraulic pump. The servo-valve allows ones of the head-sided hydraulic chamber and the rod-sided hydraulic chamber to make fluid-communication to the reservoir tank in accordance with a direction in which the hydraulic pump rotates, and varies a degree at which one of the head-sided hydraulic chamber and the rod-sided hydraulic chamber makes fluid-communication with the reservoir tank, to a designated degree.
摘要翻译：本发明提供了一种用于电液压驱动液压缸的装置，包括可沿相反方向旋转的液压泵，用于驱动液压泵的电动马达，其中包含液压流体的储存罐和伺服阀。液压缸在具有液压泵的第一端口的头侧液压室处流体连通，并且在具有液压泵的第二端口的杆侧液压室处流体连通。伺服阀允许头侧液压室和杆侧液压室中的一个根据液压泵旋转的方向使储液箱流体连通，并且在一定程度上改变头侧液压室和杆侧液压室与储罐相通，达到指定的程度。

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