公开(公告)号：US5836160A

公开(公告)日：1998-11-17

申请号：US762917

申请日：1996-12-10

Applicant: Sung Kyo Chang

Inventor： Sung Kyo Chang

IPC: F03C1/06 ,  F03C1/40 ,  F04B49/00 ,  F15B11/02 ,  F15B11/04 ,  F16D39/00

CPC classification number: F03C1/0686 ,  F04B49/002 ,  F15B11/04 ,  F04B2201/1204 ,  F04B2203/1202 ,  F15B2211/20538 ,  F15B2211/30505 ,  F15B2211/355 ,  F15B2211/40515 ,  F15B2211/455 ,  F15B2211/50518 ,  F15B2211/5153 ,  F15B2211/5154 ,  F15B2211/55 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/7107 ,  F15B2211/76

Abstract: A hydraulic system for driving an axial piston type hydraulic motor wherein a swash plate can tilt at a right angle relative to a shaft. The hydraulic system comprises a swash plate cylinder; a double-acting swash plate piston disposed in the swash plate cylinder; one rod end of which is connected to the swash plate; a pair of springs disposed in the swash plate cylinder for biasing the swash plate piston; a swash plate piston control valve for selectively connecting one of the swash plate piston chambers to a hydraulic pump or, alternatively, for interconnecting the chambers of the swash plate piston; an inlet passage installed between an inlet port of the hydraulic motor and a hydraulic pump; an outlet passage installed between an outlet port of the hydraulic motor and a tank; a main control valve installed in the inlet passage for opening or closing the inlet passage in response to a predetermined signal; a passage switching valve installed in the outlet passage for opening or closing the outlet passage in response to a predetermined signal; a bypass passage installed in the outlet passage wherein each end of the bypass passage is connected to a predetermined position before and after the passage switching valve; and a relief valve installed in the bypass passage.

Abstract translation: 一种用于驱动轴向活塞式液压马达的液压系统，其中斜盘可相对于轴线成直角倾斜。 液压系统包括斜盘缸; 设置在斜盘滚筒中的双作用斜盘活塞; 一个杆端连接到斜盘; 一对弹簧，其设置在所述斜盘缸中，用于偏压所述斜盘活塞; 斜盘活塞控制阀，用于将斜盘活塞室中的一个选择性地连接到液压泵，或者可选地将所述斜盘活塞的室互连; 安装在液压马达的入口与液压泵之间的入口通道; 安装在液压马达的出口与油箱之间的出口通道; 安装在入口通道中的主控制阀，用于响应于预定信号打开或关闭入口通道; 安装在出口通道中的通道切换阀，用于响应于预定信号打开或关闭出口通道; 旁通通道，其安装在出口通道中，旁通通道的每个端部连接到通道切换阀前后的预定位置; 以及安装在旁通通道中的安全阀。