-
公开(公告)号:US20150275930A1
公开(公告)日:2015-10-01
申请号:US14517389
申请日:2014-10-17
Applicant: Showa Corporation
Inventor: Hayato TSUTSUI , Takeshi UEKI , Shinya HORIE , Kazuhiko SADAKATA
IPC: F15B11/028 , F04B19/00
CPC classification number: F15B11/028 , F04B19/00 , F04B49/22 , F04B53/10 , F04B53/1095 , F15B15/18 , F15B2211/205 , F15B2211/20561 , F15B2211/27 , F15B2211/30 , F15B2211/3051 , F15B2211/50518 , F15B2211/511 , F15B2211/56 , F15B2211/7053
Abstract: Provided is a pump device and a hydraulic actuator that can reduce the number of steps of performance measurement. The pump device includes: a switching valve for switching a flow of oil to a first chamber or a second chamber of a cylinder device, the inside of which is segmented into the first chamber and the second chamber by a piston; an up blow valve (first chamber-side relief valve) that relieves pressure of a first chamber-side flow path connected to the first chamber; and a down blow valve (second chamber-side relief valve) that relieves pressure of a second chamber-side flow path connected to the second chamber.
Abstract translation: 提供了可以减少性能测量步骤数量的泵装置和液压致动器。 泵装置包括:切换阀,用于将油流切换到气缸装置的第一室或第二室,其内部通过活塞分段成第一室和第二室; 一个减轻连接到第一室的第一室侧流路的压力的上吹阀(第一室侧溢流阀); 以及减轻连接到第二室的第二室侧流路的压力的下吹阀(第二室侧溢流阀)。
-
公开(公告)号:US20150275928A1
公开(公告)日:2015-10-01
申请号:US14491075
申请日:2014-09-19
Applicant: SHOWA CORPORATION
Inventor: Hayato TSUTSUI , Kazuhiko SADAKATA , Atsushi KAGAWA
IPC: F15B11/024 , F04B5/02 , F04B53/10
CPC classification number: F15B11/024 , B63H20/10 , F04B5/02 , F04B53/10 , F04C2/18 , F04C15/068 , F15B13/01 , F15B13/027 , F15B15/18 , F15B2211/205 , F15B2211/20515 , F15B2211/20561 , F15B2211/27 , F15B2211/30 , F15B2211/3051 , F15B2211/50518 , F15B2211/50554 , F15B2211/511 , F15B2211/565 , F15B2211/7052
Abstract: A pump apparatus includes: a pump that ejects a hydraulic fluid; and a selector valve that switches a direction of a flow of the hydraulic fluid to be supplied to one of a first chamber and a second chamber into which a cylinder apparatus is internally partitioned by a piston, the first chamber extending during a stroke of the piston for extending the cylinder apparatus, and the second chamber extending during a stroke of the piston for shortening the cylinder apparatus, and the selective valve has, at a channel connected to the second chamber, an orifice that is narrower than a channel connected to the first chamber.
Abstract translation: 泵装置包括:喷射液压流体的泵; 以及选择阀,其将供给到第一室和第二室中的液压流体的流动方向切换到气缸装置内部由活塞内部分隔的第二室,所述第一室在活塞的行程期间延伸 用于使所述气缸装置延伸,并且所述第二室在所述活塞的行程期间延伸以缩短所述气缸装置,并且所述选择阀在连接到所述第二室的通道处具有比连接到所述第一腔的通道窄的孔 房间。
-