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24 条记录 (耗时 0.014 秒)

    Combined hydrostatic and gear transmissions employing independent sumps
    1.
    发明申请
    Combined hydrostatic and gear transmissions employing independent sumps 失效

    公开(公告)号：US20020115521A1

    公开(公告)日：2002-08-22

    申请号：US10082187

    申请日：2002-02-26

    申请人： HYDRO-THOMA LIMITED

    发明人： Christian Helmut Thoma

    IPC分类号： F16H047/04 ,  F16H048/06

    CPC分类号： F16H57/027 ,  B60K17/105 ,  B60Y2200/223 ,  F16H47/02 ,  F16H61/4174

    摘要： A hydrostatic power transmitting device in combination with a speed reducing apparatus together disposed within a common housing having an interior space divided by partitioning device into a first region in which the hydrostatic unit is disposed and a second region in which said speed reducer is accommodated. First and second regions are segregated from each other by the partitioning device being in the form of a flexible non-porous barrier. The elastically deformable partitioning device can therefore adjust its shape to take up any change in the amount of hydrostatic transmitting fluid in the first region due to temperature changes of the fluid and facilitates the regulation in depth of lubricant held by the second region. Thereby an initially low level of lubricant in the second region lessens the adverse effect of power-retarding drag losses, especially during cold weather winter operation, and a rising level of lubricant ensures good lubrication when temperatures are elevated and viscosity is low. Preferably the second region is sealed from the environment, and the above atmospheric positive pressure in the second chamber aided or induced by the expanding volume of fluid in the first region provides a net increase of pressure experienced by low-pressure side of the closed-loop circuit of the hydrostatic transmission.

    Method of charging a hydrostatic transmission with oil
    4.
    发明授权
    Method of charging a hydrostatic transmission with oil 失效
    用油充液静液压传动的方法

    公开(公告)号：US5273135A

    公开(公告)日：1993-12-28

    申请号：US855120

    申请日：1992-03-18

    申请人： Dale I. Havens

    发明人： Dale I. Havens

    IPC分类号： F16H57/027 ,  F16H57/04 ,  F01M11/08

    CPC分类号： F16H61/4174 ,  F16H57/027 ,  F16H57/04

    摘要： A method of charging a hydrostatic transmission with deaerated transmission oil wherein a hollow-bodied bellows attached to a housing plate for placement within the hydrostatic transmission housing, and a bleed plug for a bleed hole are removed, and the deaerated oil is caused to fill the transmission housing. Once the transmission has been completely charged such that the oil is at the bleed hole level, the hollow-bodied bellows attached to the housing plate is then secured to the hydrostatic transmission housing causing excess oil and air initially trapped within the hydrostatic transmission housing, to be purged through the bleed hole, while the transmission bleed hole plug is then secured into the transmission bleed hole.

    摘要翻译： 一种用脱气变速器油装载静液压变速器的方法，其中，连接到壳体板的中空体积波纹管用于放置在静液压变速器壳体内，以及用于排放孔的排放塞被去除，并且使脱气的油填充 变速箱 一旦变速器已经完全充电，使得油处于排放孔位置，则附接到壳体板的空心波纹管然后被固定到静液压变速器壳体，导致最初被捕获在静液压变速器壳体内的多余的油和空气， 通过排放孔进行清洗，同时将传输排放孔塞固定到传输排放孔中。

    Flow control dump valve
    6.
    发明授权
    Flow control dump valve 失效
    流量控制阀

    公开(公告)号：US3785157A

    公开(公告)日：1974-01-15

    申请号：US3785157D

    申请日：1972-11-24

    申请人： DEERE & CO

    发明人： KITTLE C ,  MOON S ,  SPENCER K

    IPC分类号： B60K7/00 ,  B60K17/04 ,  F16H39/02 ,  F16H47/04

    CPC分类号： F16H61/4174 ,  B60K7/0015 ,  B60K17/046 ,  B60K2007/0038 ,  B60K2007/0092 ,  F16H39/02 ,  F16H47/04 ,  F16H2047/045

    摘要： The wheel motor of a hydrostatic drive system is coupled to the wheel through a pressure responsive clutch which disconnects the motor from the wheel during periods when fluid under pressure is not supplied to the motor. A flow control dump valve is built into the clutch actuator and regulates a specific rate of flow through the actuator from zero to lock-up pressure. The flow control dump valve blocks all flow through the actuator above lock-up pressure. The flow control dump valve provides a controlled bleed for purging of air and sumping of oil which leaks past the control valve below lock-up pressure. The sumping of oil below lock-up pressure ensures complete release of the clutch when fluid pressure is not supplied to the motor.

    摘要翻译： 静液压驱动系统的轮马达通过压力响应式离合器联接到车轮，该压力响应离合器在没有向马达提供压力的流体的时段期间将马达与车轮断开。 离合器执行机构内置有一个流量控制卸载阀，并将通过执行机构的特定流量从零调节到锁定压力。 流量控制卸料阀将所有流经执行器的流量都阻塞在锁定压力以上。 流量控制卸料阀提供可控制的排气，用于吹扫空气，并将通过控制阀泄漏的油的总和低于锁定压力。 低于锁定压力的油的总和确保了当未向马达供应流体压力时离合器的完全释放。

    Hydraulic devices for smooth operations of hydrostatic transmission
    8.
    发明授权
    Hydraulic devices for smooth operations of hydrostatic transmission 有权
    液压装置，用于流体静力传动的平稳运行

    公开(公告)号：US06837047B2

    公开(公告)日：2005-01-04

    申请号：US10457936

    申请日：2003-06-10

    申请人： Xingen Dong ,  James S. Whitaker

    发明人： Xingen Dong ,  James S. Whitaker

    IPC分类号： F16H61/40 ,  F16H61/4043 ,  F16H61/4104 ,  F16H61/4139 ,  F16H61/4174 ,  F16H61/46 ,  F16D31/02

    CPC分类号： F16H61/4043 ,  F16H61/4104 ,  F16H61/4139 ,  F16H61/4174 ,  F16H61/461 ,  Y10T137/2572 ,  Y10T137/2663

    摘要： A hydraulic valve assembly, for use in a hydrostatic transmission, for controlling fluid transfer between a first, a second and a third line, wherein two of the lines define first and second pressure lines, within a closed-loop circuit. The valve assembly comprises: a valve body having ports in communication with the three lines; a spool bore; a valve spool, adapted for sealing reciprocation within the spool bore, having a first and second end portion, a connecting portion, and a first and second bypass orifice within the valve spool; and dampers for centering the valve spool. This spool is movable from a neutral position occurring when the fluid pressure forces in the first and second pressure lines are substantially similar, to a first or a second position occurring when the fluid pressure force in the first pressure line is greater or less than that in the second pressure line, respectively. The bypass orifices are enabled in the neutral position, but are substantially disabled in the first and second positions. A hydraulic system utilizing the valve assembly and a method for increasing the width of the dead band of the hydrostatic transmission in a neutral mode of operation are also set forth.

    摘要翻译： 一种用于静液压传动的液压阀组件，用于控制第一，第二和第三线路之间的流体传递，其中两条线路在闭环回路内限定第一和第二压力线。 阀组件包括：具有与三条线路连通的端口的阀体; 滑阀孔; 阀芯，其适于在所述滑阀孔内密封往复运动，具有第一和第二端部，连接部分以及所述阀芯内的第一和第二旁通孔口; 以及用于使阀芯对中的阻尼器。 该阀芯可以在第一和第二压力管路中的流体压力大致相同时发生的中性位置移动到当第一压力管线中的流体压力大于或小于第一压力管路中的流体压力时发生的第一或第二位置 第二条压力线。 旁通孔在中性位置启用，但在第一和第二位置基本禁用。 还阐述了利用阀组件的液压系统和在中性运行模式下增加静液压传动装置的死区宽度的方法。

    Hydraulic devices for smooth operations of hydrostatic transmission
    9.
    发明申请
    Hydraulic devices for smooth operations of hydrostatic transmission 有权
    液压装置，用于流体静力传动的平稳运行

    公开(公告)号：US20040006981A1

    公开(公告)日：2004-01-15

    申请号：US10457936

    申请日：2003-06-10

    发明人： Xingen Dong ,  James S. Whitaker

    IPC分类号： F16D031/02

    CPC分类号： F16H61/4043 ,  F16H61/4104 ,  F16H61/4139 ,  F16H61/4174 ,  F16H61/461 ,  Y10T137/2572 ,  Y10T137/2663

    摘要： A hydraulic valve assembly, for use in a hydrostatic transmission, for controlling fluid transfer between a first, a second and a third line, wherein two of the lines define first and second pressure lines, within a closed-loop circuit. The valve assembly comprises: a valve body having ports in communication with the three lines; a spool bore; a valve spool, adapted for sealing reciprocation within the spool bore, having a first and second end portion, a connecting portion, and a first and second bypass orifice within the valve spool; and dampers for centering the valve spool. This spool is movable from a neutral position occurring when the fluid pressure forces in the first and second pressure lines are substantially similar, to a first or a second position occurring when the fluid pressure force in the first pressure line is greater or less than that in the second pressure line, respectively. The bypass orifices are enabled in the neutral position, but are substantially disabled in the first and second positions. A hydraulic system utilizing the valve assembly and a method for increasing the width of the dead band of the hydrostatic transmission in a neutral mode of operation are also set forth.

    摘要翻译： 一种用于静液压传动的液压阀组件，用于控制第一，第二和第三线路之间的流体传递，其中两条线路在闭环回路内限定第一和第二压力线。 阀组件包括：具有与三条线路连通的端口的阀体; 滑阀孔; 阀芯，其适于在所述滑阀孔内密封往复运动，具有第一和第二端部，连接部分以及所述阀芯内的第一和第二旁通孔口; 以及用于使阀芯对中的阻尼器。 该阀芯可以在第一和第二压力管路中的流体压力大致相同时发生的中性位置移动到当第一压力管线中的流体压力大于或小于第一压力管路中的流体压力时发生的第一或第二位置 第二条压力线。 旁通孔在中性位置启用，但在第一和第二位置基本禁用。 还阐述了利用阀组件的液压系统和在中性运行模式下增加静液压传动装置的死区宽度的方法。

    Combined hydrostatic and gear transmissions employing independent sumps
    10.
    发明授权
    Combined hydrostatic and gear transmissions employing independent sumps 失效

    公开(公告)号：US06595887B2

    公开(公告)日：2003-07-22

    申请号：US10082187

    申请日：2002-02-26

    申请人： Christian Helmut Thoma

    发明人： Christian Helmut Thoma

    IPC分类号： F16H4704

    CPC分类号： F16H57/027 ,  B60K17/105 ,  B60Y2200/223 ,  F16H47/02 ,  F16H61/4174

    摘要： A hydrostatic power transmitting device in combination with a speed reducing apparatus together disposed within a common housing having an interior space divided by partitioning device into a first region in which the hydrostatic unit is disposed and a second region in which said speed reducer is accommodated. First and second regions are segregated from each other by the partitioning device being in the form of a flexible non-porous barrier. The elastically deformable partitioning device can therefore adjust its shape to take up any change in the amount of hydrostatic transmitting fluid in the first region due to temperature changes of the fluid and facilitates the regulation in depth of lubricant held by the second region. Thereby an initially low level of lubricant in the second region lessens the adverse effect of power-retarding drag losses, especially during cold weather winter operation, and a rising level of lubricant ensures good lubrication when temperatures are elevated and viscosity is low. Preferably the second region is sealed from the environment, and the above atmospheric positive pressure in the second chamber aided or induced by the expanding volume of fluid in the first region provides a net increase of pressure experienced by low-pressure side of the closed-loop circuit of the hydrostatic transmission.