Air blower apparatus
    1.
    发明授权
    Air blower apparatus 有权
    鼓风机

    公开(公告)号:US06305333B1

    公开(公告)日:2001-10-23

    申请号:US09594484

    申请日:2000-06-16

    IPC分类号: F01P702

    摘要: Air blower apparatus (20) in which a fan boss (41) at the rotational center portion of a fan (29) has a recessed form. Meanwhile, the central part of the body portion (21) of the air blower apparatus (20), i.e., a boss portion (38), has a projecting form to be housed within the recessed fan boss (41). The central part of the body potion (21), i.e., the boss portion (38), is housed within the recessed fan boss (41) at the rotational center portion of the fan (29), and the rotary shaft (39) of the body portion (21) of the air blower apparatus (20) is mounted on the fan (29).

    摘要翻译: 风扇装置(20),其中在风扇(29)的旋转中心部分处的风扇凸台(41)具有凹陷形状。 同时,鼓风机装置(20)的主体部分(21)的中心部分,即凸台部分(38)具有容纳在凹形风扇凸台(41)内的突出形式。 身体部分21的中心部分即凸起部分38在风扇29的旋转中心部分收纳在凹入的风扇凸台41内,旋转轴39 鼓风机装置(20)的主体部(21)安装在风扇(29)上。

    Cooling fan drive apparatus
    7.
    发明授权
    Cooling fan drive apparatus 有权
    冷却风扇驱动装置

    公开(公告)号:US06311488B1

    公开(公告)日:2001-11-06

    申请号:US09422863

    申请日:1999-10-25

    IPC分类号: F16D3102

    CPC分类号: F16D31/02 F01P7/044

    摘要: A target fan rotational speed (R.P.M.) corresponding to a temperature detected by a temperature detector is determined according to a set correlation and the capacity of a variable-capacity hydraulic pump is varied so that the rotational speed of a cooling fan becomes that determined target fan rotational speed. It thereby becomes possible to precisely control the blowing air volume (R.P.M.) of the cooling fan, and, when the cooling fan is driven with a hydraulic source, to construct a hydraulic circuit with fewer parts. Moreover, in cases where the torque absorbed by the fan-drive hydraulic motor fluctuates, control is effected to suppress fluctuations in the cooling fan rotational speed and stabilize the rotation. Furthermore, in cases where the load on the fan-drive hydraulic motor fluctuates, control is effected to suppress fluctuations in the cooling fan rotational speed and stabilize the rotation.

    摘要翻译: 根据设定的相关性确定与温度检测器检测到的温度对应的目标风扇转速(RPM),并且变容量液压泵的容量变化,使得冷却风扇的转速成为确定的目标风扇 转速。 由此,可以精确地控制冷却风扇的吹风量(R.P.M.),并且当用液压源驱动冷却风扇时,构成具有较少部件的液压回路。 此外,在由风扇驱动液压马达吸收的扭矩波动的情况下,进行控制以抑制冷却风扇转速的波动并使旋转稳定。 此外,在风扇驱动液压马达的负载变动的情况下,进行控制以抑制冷却风扇转速的波动并使旋转稳定。

    HYDRAULIC PUMP/MOTOR AND METHOD OF SUPPRESSING PULSATION OF HYDRAULIC PUMP/MOTOR
    8.
    发明申请
    HYDRAULIC PUMP/MOTOR AND METHOD OF SUPPRESSING PULSATION OF HYDRAULIC PUMP/MOTOR 有权
    液压泵/电动机及其液压泵/电动机的压缩方法

    公开(公告)号:US20130068091A1

    公开(公告)日:2013-03-21

    申请号:US13635504

    申请日:2011-03-16

    IPC分类号: F01B3/00

    摘要: A method of suppressing a pulsation of axial type hydraulic pump/motor includes performing a pressure accumulation operation in which each of ports of each of two pressure accumulation oil passages exclusively communicates with a corresponding one of communication holes and pressure inside one of the cylinder bores is accumulated in a corresponding one of the pressure accumulation oil passages through the communication hole in two levels, the communication holes being provided for each of the cylinder bores to communicate with inside of each of the cylinder bores and having opening portions sliding on the respective ports with rotation of the cylinder block to communicate with the respective ports; and performing an accumulated pressure collection operation in which the pressure accumulated in the pressure accumulation oil passage is collected in one of the cylinder bores in two levels.

    摘要翻译: 抑制轴向液压泵/电动机的脉动的方法包括进行压力积蓄运转,其中,两个压力积存油路中的每一个的各端口与相应的一个连通孔连通,并且其中一个气缸孔内的压力是 累积在通过连通孔的相应的一个压力积聚油通道两级中,为每个气缸孔设置连通孔,以与每个气缸孔的内部连通并且具有在各个端口上滑动的开口部分, 气缸体的旋转与相应的端口连通; 并且进行累积的压力收集操作,其中累积在所述压力累积油路中的压力被收集在所述气缸孔中的一个中两级。

    Brake device for oil hydraulic motor
    9.
    发明授权
    Brake device for oil hydraulic motor 有权
    液压马达制动装置

    公开(公告)号:US6050091A

    公开(公告)日:2000-04-18

    申请号:US125219

    申请日:1998-08-13

    申请人: Kazuhiro Maruta

    发明人: Kazuhiro Maruta

    IPC分类号: E02F9/12 E02F9/22 F16D31/02

    摘要: A braking apparatus for a hydraulic motor (20) having a rotary component (21) includes a rotary side friction plate (22) coupled to the rotary component of the hydraulic motor, a fixed side friction plate (23) coupled to a fixed component of the hydraulic motor, and a braking cylinder assembly (24) having a piston (25), a spring (26) and a piston pressure receiving chamber (27). The piston is energizable by the spring to move in a braking direction for bringing the fixed side and the rotary side friction plates into a pressure contact, whereas the piston pressure receiving chamber can be be supplied with pressure fluid to displace the piston in a braking release direction, thereby separating the fixed side friction plate and the rotary side friction plate from each other. An operating valve (41, 42) supplies pressure fluid into the hydraulic motor, and a hydraulic pilot valve (52, 53) provides pilot pressure fluid for use to switch the operating valve. A pilot pressure fluid from the hydraulic pilot valve is delivered through a hydraulic circuit (28) into the piston pressure receiving chamber. The braking apparatus further includes in the hydraulic circuit a fluid flow control valve (30) which has an area of valve opening progressively reduced as a function of a distance of travel of the piston moving and displaced from a braking position towards a braking release position.

    摘要翻译: PCT No.PCT / JP97 / 01057 Sec。 371日期1998年8月13日 102(e)日期1998年8月13日PCT 1997年3月27日PCT公布。 WO97 / 36062 PCT公开 日期1997年10月2日具有旋转部件(21)的液压马达(20)的制动装置包括:联接到液压马达的旋转部件的旋转侧摩擦板(22),固定侧摩擦板(23) 到液压马达的固定部件,以及具有活塞(25),弹簧(26)和活塞压力接收室(27)的制动缸组件(24)。 活塞可通过弹簧激励,以在制动方向上移动,以使固定侧和旋转侧摩擦板成为压力接触,而活塞压力接收室可以被供应压力流体,以在制动释放中移动活塞 从而将固定侧摩擦板和旋转侧摩擦板彼此分离。 操作阀(41,42)向液压马达提供压力流体,液压先导阀(52,53)提供用于切换操作阀的先导压力流体。 来自液压先导阀的先导压力流体通过液压回路(28)输送到活塞压力接收室。 制动装置还包括在液压回路中的流体流量控制阀(30),其具有作为从制动位置向制动释放位置移动的活塞的行进距离逐渐减小的阀开口面积逐渐减小的流体流量控制阀(30)。

    Hydraulic pump/motor and method of suppressing pulsation of hydraulic pump/motor
    10.
    发明授权
    Hydraulic pump/motor and method of suppressing pulsation of hydraulic pump/motor 有权
    液压泵/马达及液压泵/马达脉动抑制方法

    公开(公告)号:US09097113B2

    公开(公告)日:2015-08-04

    申请号:US13635504

    申请日:2011-03-16

    摘要: A method of suppressing a pulsation of axial type hydraulic pump/motor includes performing a pressure accumulation operation in which each of ports of each of two pressure accumulation oil passages exclusively communicates with a corresponding one of communication holes and pressure inside one of the cylinder bores is accumulated in a corresponding one of the pressure accumulation oil passages through the communication hole in two levels, the communication holes being provided for each of the cylinder bores to communicate with inside of each of the cylinder bores and having opening portions sliding on the respective ports with rotation of the cylinder block to communicate with the respective ports; and performing an accumulated pressure collection operation in which the pressure accumulated in the pressure accumulation oil passage is collected in one of the cylinder bores in two levels.

    摘要翻译: 抑制轴向液压泵/电动机的脉动的方法包括进行压力积蓄运转,其中,两个压力积存油路中的每一个的各端口与相应的一个连通孔连通,并且其中一个气缸孔内的压力是 累积在通过连通孔的相应的一个压力积聚油通道两级中,为每个气缸孔设置连通孔,以与每个气缸孔的内部连通并且具有在各个端口上滑动的开口部分, 气缸体的旋转与相应的端口连通; 并且进行累积的压力收集操作,其中累积在所述压力累积油路中的压力被收集在所述气缸孔中的一个中两级。