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公开(公告)号:US6119967A
公开(公告)日:2000-09-19
申请号:US945864
申请日:1997-11-30
申请人: Toru Nakayama , Yukio Tamura , Toshio Kitani , Satoru Koyanagi , Yuji Ozawa , Yoshimitsu Yuzawa , Katsuhiro Ikegami , Mikihisa Takiguchi
发明人: Toru Nakayama , Yukio Tamura , Toshio Kitani , Satoru Koyanagi , Yuji Ozawa , Yoshimitsu Yuzawa , Katsuhiro Ikegami , Mikihisa Takiguchi
CPC分类号: E02F9/2228 , B02C21/02 , B02C25/00 , E02F9/2235
摘要: A control circuit of a transportable crusher supplies, by the same pump, a required flow rate to hydraulic motors and actuators for a plurality of operating devices having different loads and improves simultaneous operability, fine adjustment, and reproducibility. The control circuit includes at least one variable displacement hydraulic pump (1) for supplying a hydraulic fluid; switch valves (12, 13, 14, 15, 16, 17, 18, 19, 20, 21), for conducting and interrupting the hydraulic fluid from the hydraulic pump (1) to the hydraulic motors and actuators (25a, 26a, 27a, 28a, 29a, 30a, 31a, 32a, 33a, 34a); pressure compensation control valves (11), for inputting front and back pressures of the switch valves, for controlling a discharge flow rate of the hydraulic pump (1) so that the difference of the front and back pressures can become constant and for distributing the discharge flow rate in accordance with a required power of the respective hydraulic motors and actuators or in accordance with a predetermined priority when the switch valves are simultaneously operated; and a controller (41), for controlling the switch valves to a predetermined value set in accordance with the load of the hydraulic motors and actuators.
摘要翻译: PCT No.PCT / JP96 / 01201 Sec。 371日期:1997年11月30日 102(e)日期1997年11月30日PCT提交1996年5月1日PCT公布。 公开号WO96 / 34690 日期:1996年11月7日可运输破碎机的控制回路通过相同的泵向具有不同负载的多个操作装置的液压马达和执行机构提供所需的流量,并且提高了同时的可操作性,精细调整和再现性。 控制回路包括用于供给液压流体的至少一个可变排量液压泵(1) 开关阀(12,13,14,15,16,17,18,19,20,21),用于将液压油从液压泵(1)传导到液压马达和致动器(25a,26a,27a) ,28a,29a,30a,31a,32a,33a,34a); 压力补偿控制阀(11),用于输入开关阀的前后压力,用于控制液压泵(1)的排出流量,使得前后压力的差异变得恒定,并且用于分配排出 流量根据各个液压马达和致动器的所需功率,或者当切换阀同时操作时,根据预定优先级; 以及控制器(41),用于根据液压马达和致动器的负载将开关阀控制到预定值。