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公开(公告)号:US06170261B2
公开(公告)日:2001-01-09
申请号:US09188891
申请日:1998-11-10
申请人: Naoki Ishizaki , Toyomi Kataoka , Nobumi Yoshida
发明人: Naoki Ishizaki , Toyomi Kataoka , Nobumi Yoshida
IPC分类号: F16D3102
CPC分类号: E02F9/2292 , E02F9/2232 , E02F9/2239 , E02F9/2296 , F15B11/165 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/252 , F15B2211/30535 , F15B2211/3127 , F15B2211/3144 , F15B2211/31576 , F15B2211/324 , F15B2211/40507 , F15B2211/40515 , F15B2211/413 , F15B2211/41518 , F15B2211/428 , F15B2211/455 , F15B2211/50518 , F15B2211/50536 , F15B2211/5059 , F15B2211/513 , F15B2211/5151 , F15B2211/528 , F15B2211/55 , F15B2211/57 , F15B2211/6052 , F15B2211/6054 , F15B2211/6058 , F15B2211/7053 , F15B2211/7058 , F15B2211/71
摘要: A pressurized hydraulic fluid supply apparatus capable of merging or separating a plurality of hydraulic pump lines according to the driving states of a plurality of actuators. The pressurized hydraulic fluid supply apparatus has a merge/separation valve 40 that merges or separates the hydraulic fluids delivered under pressure by the first hydraulic pump 1 and the second hydraulic pump 11. The merge/separation valve 40 is set to a flow separation state upon driving of the second hydraulic actuator 16 and is preferentially shifted to a flow merging state when the third hydraulic actuator 21 is driven. Hence, even when a manually driven operation valve is used, the merge/separation valve 40 is automatically switched between the flow separation state and the flow merging state according to the operation of the operation valve. This apparatus prevents an unintended flow rate difference between the first and second actuators from being produced upon driving of the third actuator.
摘要翻译: 一种加压液压流体供给装置,其能够根据多个致动器的驱动状态合并或分离多个液压泵管路。 加压液压流体供给装置具有合流分离阀40,其将由第一液压泵1和第二液压泵11在压力下输送的液压流体合并或分离。合并/分离阀40被设定为流动分离状态 第二液压致动器16的驱动,并且当第三液压致动器21被驱动时,优先移动到流动合流状态。 因此,即使使用手动驱动的操作阀,也可以根据操作阀的动作自动地在合流分离阀和流入合流状态之间切换合并分离阀40。 该装置防止在驱动第三致动器时产生第一和第二致动器之间的意外的流量差异。
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公开(公告)号:US20100303643A1
公开(公告)日:2010-12-02
申请号:US12438532
申请日:2007-07-19
IPC分类号: F04B49/00
CPC分类号: F15B11/165 , E02F9/2203 , E02F9/2228 , E02F9/2232 , E02F9/225 , E02F9/2296 , F01P7/044 , F15B11/05 , F15B11/168 , F15B2211/20523 , F15B2211/20553 , F15B2211/40553 , F15B2211/6054 , F15B2211/6343 , F15B2211/654 , F15B2211/7058
摘要: A fan drive system for driving an engine cooling fan mounted in a working machine is described. The fan drive system includes a variable displacement pump that supplies oil to an actuator and is also used as a hydraulic pump for the hydraulic motor that drives the cooling fan. A pump displacement of a variable displacement pump can be controlled in accordance with the load of the working machine, and when a load is not generated in the working machine, the pump displacement of the variable displacement pump can be controlled in accordance with a load pressure of a hydraulic motor which drives a cooling fan. Examples of such working machines include a forklift, a skid steer loader (SSL) and a crawler dump.
摘要翻译: 描述了用于驱动安装在工作机中的发动机冷却风扇的风扇驱动系统。 风扇驱动系统包括可变排量泵,其向致动器供油,并且还用作用于驱动冷却风扇的液压马达的液压泵。 可以根据作业机械的负载来控制可变排量泵的泵排量,并且当在工作机械中不产生负载时,可以根据负载压力来控制可变排量泵的泵排量 驱动冷却风扇的液压马达。 这种工作机器的示例包括叉车,滑移装载机(SSL)和履带式倾卸装置。
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