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    • 5. 发明申请
    • INDUSTRIAL VEHICLE
    • 工业车辆
    • US20130167521A1
    • 2013-07-04
    • US13822979
    • 2011-09-14
    • Megumu TsurutaKeiji ItoTakuya Nakada
    • Megumu TsurutaKeiji ItoTakuya Nakada
    • F15B13/00
    • F15B13/00B66F9/22F15B2211/50518F15B2211/50536
    • A forklift (1) according to the present invention includes: an engine (7); a hydraulically-operated device for cargo handling (2); a pump for cargo handling (5) that is driven by the engine (7); hydraulic piping for cargo handling (8) that connects the pump for cargo handling (5) and the hydraulically-operated device for cargo handling (2); discharge piping (110) that branches from the hydraulic piping for cargo handling (8) and is connected to a tank (4); a switching valve (111) capable of switching the opening and closing of the discharge piping (110); a control device (13) that closes the discharge piping (110) when the rotation speed of the engine (7) is larger than a predetermined value, and opens the discharge piping (110) when the rotation speed of the engine (7) is less than or equal to a predetermined value; and a sub-relief valve (112) that adjusts the flow rate of hydraulic oil that is discharged from the discharge piping (110) to the tank (4), on the bases of the pressure or the flow rate of the hydraulic oil.
    • 根据本发明的叉车(1)包括:发动机(7); 用于货物处理的液压操作装置(2); 用于由发动机(7)驱动的用于货物处理(5)的泵; 用于货物处理的液压管道(8),用于连接用于货物处理的泵(5)和用于货物处理的液压操作装置(2); 从用于货物处理的液压管道(8)分支并连接到罐(4)的排放管道(110); 能够切换排出管道(110)的打开和关闭的切换阀(111); 当发动机(7)的转速大于预定值时关闭排放管道(110)的控制装置(13),并且当发动机(7)的转速为 小于或等于预定值; 以及基于液压油的压力或流量调节从排出管道(110)排放到罐(4)的液压油的流量的子安全阀(112)。
    • 8. 发明授权
    • Industrial vehicle
    • 工业车辆
    • US09334881B2
    • 2016-05-10
    • US13822979
    • 2011-09-14
    • Megumu TsurutaKeiji ItoTakuya Nakada
    • Megumu TsurutaKeiji ItoTakuya Nakada
    • F16D31/02F15B13/00B66F9/22
    • F15B13/00B66F9/22F15B2211/50518F15B2211/50536
    • A forklift (1) according to the present invention includes: an engine (7); a hydraulically-operated device for cargo handling (2); a pump for cargo handling (5) that is driven by the engine (7); hydraulic piping for cargo handling (8) that connects the pump for cargo handling (5) and the hydraulically-operated device for cargo handling (2); discharge piping (110) that branches from the hydraulic piping for cargo handling (8) and is connected to a tank (4); a switching valve (111) capable of switching the opening and closing of the discharge piping (110); a control device (13) that closes the discharge piping (110) when the rotation speed of the engine (7) is larger than a predetermined value, and opens the discharge piping (110) when the rotation speed of the engine (7) is less than or equal to a predetermined value; and a sub-relief valve (112) that adjusts the flow rate of hydraulic oil that is discharged from the discharge piping (110) to the tank (4), on the bases of the pressure or the flow rate of the hydraulic oil.
    • 根据本发明的叉车(1)包括:发动机(7); 用于货物处理的液压操作装置(2); 用于由发动机(7)驱动的用于货物处理(5)的泵; 用于货物处理的液压管道(8),用于连接用于货物处理的泵(5)和用于货物处理的液压操作装置(2); 从用于货物处理的液压管道(8)分支并连接到罐(4)的排放管道(110); 能够切换排出管道(110)的打开和关闭的切换阀(111); 当发动机(7)的转速大于预定值时关闭排放管道(110)的控制装置(13),并且当发动机(7)的转速为 小于或等于预定值; 以及基于液压油的压力或流量调节从排出管道(110)排放到罐(4)的液压油的流量的子安全阀(112)。