HYDRAULIC PUMP/MOTOR AND METHOD OF SUPPRESSING PULSATION OF HYDRAULIC PUMP/MOTOR
    1.
    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。

    Hydraulic pump/motor and method of suppressing pulsation of hydraulic pump/motor
    2.
    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。

    Brake device for oil hydraulic motor
    4.
    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 fan driving device
    5.
    发明授权
    Hydraulic pump/motor and fan driving device 有权
    液压泵/电机和风扇驱动装置

    公开(公告)号:US08677884B2

    公开(公告)日:2014-03-25

    申请号:US12735469

    申请日:2008-12-22

    IPC分类号: F03C1/253 F04B1/22

    摘要: A hydraulic motor 10 of the invention includes a detected unit 52 formed on an outer circumferential surface of a cylinder block 14 and a rotation sensor 50arranged opposed to the detected unit 52 for detecting the detected unit 52. The rotation sensor 50 is provided on a position corresponding to a position between a deepest portion 41 of a cylinder hole 29 and a rear end face 28 of the cylinder block in an axial direction of the cylinder block. A fan driving device 60 is provided with the hydraulic motor 10, a bracket 61 to which the hydraulic motor is attached in a state in which a tip end of the rotational shaft 13 is arranged on a surface side thereof through a through-hole 64 and a fan 62 attached to the rotational shaft 13 and is driven by the hydraulic motor.

    摘要翻译: 本发明的液压马达10包括形成在气缸体14的外周面上的检测单元52和与检测单元52相对的旋转传感器50,用于检测检测单元52.旋转传感器50设置在位置 对应于缸体29的最深部分41与气缸体的轴向方向上的后端面28之间的位置。 风扇驱动装置60设置有液压马达10,在旋转轴13的前端通过通孔64配置在其表面侧的状态下安装有液压马达的托架61,以及 安装在旋转轴13上并由液压马达驱动的风扇62。

    Arrangement structure of swash plate hydraulic pump hydraulic pump
    7.
    发明授权
    Arrangement structure of swash plate hydraulic pump hydraulic pump 有权
    斜盘液压泵液压泵的排列结构

    公开(公告)号:US06960069B2

    公开(公告)日:2005-11-01

    申请号:US10237662

    申请日:2002-09-10

    CPC分类号: F16D33/18 F16D31/02

    摘要: An arrangement structure of a swash plate hydraulic pump which can be used in a wide range of construction equipment and industrial vehicles and is small in size, simple in structure, and inexpensive is provided. For this purpose, an arrangement structure of a swash plate hydraulic pump (1) comprises a driving source (3) and a plurality of swash plate hydraulic pumps (4, 8) which are connected to the driving source and discharge pressurized oil, and the plurality of swash plate hydraulic pumps include at least one swash plate hydraulic pump (8) of the second and subsequent swash plate hydraulic pumps which has a driving shaft (9) provided on a plane almost perpendicular to a driving shaft (6) of the first swash plate hydraulic pump (4) coupled to the driving source.

    摘要翻译: 提供了可用于广泛的施工设备和工业车辆中的小型,简单的结构和便宜的斜盘液压泵的布置结构。 为此,斜盘液压泵(1)的排列结构包括驱动源(3)和连接到驱动源并排出加压油的多个斜盘液压泵(4,8),并且 多个斜盘液压泵包括第二和第二旋转斜盘液压泵的至少一个旋转斜盘液压泵(8),其具有驱动轴(9),该驱动轴设置在几乎垂直于第一 旋转斜盘液压泵(4)与驱动源相连。

    Cooling fan drive apparatus
    9.
    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。

    Braking apparatus for a hydraulic motor
    10.
    发明授权
    Braking apparatus for a hydraulic motor 失效
    液压马达制动装置

    公开(公告)号:US6006872A

    公开(公告)日:1999-12-28

    申请号:US849574

    申请日:1997-06-20

    申请人: Kazuhiro Maruta

    发明人: Kazuhiro Maruta

    摘要: A braking apparatus for a hydraulic motor has a housing and a cylinder block. The apparatus includes fixed side frictional plates mounted to the housing and movable side frictional plates mounted to the cylinder block. In addition, a piston for pressing the fixed side frictional plates against the movable side frictional plates is also provided. A spring for thrusting the piston to move in a first direction thus tending to establish a first state in which the two sets of frictional plates are pressed together is also included. Furthermore, the apparatus includes a piston driving pressure receiving chamber disposed between the housing and the piston for thrusting the piston to move in a second direction under a pressure that is introduced into the piston driving pressure receiving chamber to establish a second state in which the two sets of frictional plates are separated from each other. The apparatus also includes a stopper for regulating a space between the fixed side frictional plates and the movable side frictional plates while the piston is moving in the second direction. In addition, the piston is movable in the second direction a distance that is greater than the size of the space.

    摘要翻译: PCT No.PCT / JP95 / 02701 Sec。 371日期:1997年6月20日 102(e)日期1996年6月20日PCT 1995年12月26日PCT PCT。 WO96 / 20355 PCT公开号 日期1996年7月4日液压马达的制动装置具有壳体和气缸体。 该装置包括安装到壳体的固定侧摩擦板和安装到气缸体的可动侧摩擦板。 此外,还提供了用于将固定侧摩擦板压靠在可动侧摩擦板上的活塞。 还包括用于推动活塞沿第一方向移动的弹簧,因此倾向于建立将两组摩擦板压在一起的第一状态。 此外,该装置包括设置在壳体和活塞之间的活塞驱动压力接收室,用于推动活塞在被引入到活塞驱动压力接收室中的压力下沿第二方向移动以建立第二状态,其中两个 摩擦板组彼此分离。 该装置还包括用于在活塞沿第二方向移动的同时调节固定侧摩擦板和可动侧摩擦板之间的空间的止动件。 此外,活塞可以在第二方向上移动一个大于空间大小的距离。