公开(公告)号：EP1424517A3

公开(公告)日：2008-04-16

申请号：EP03025605.1

申请日：2003-11-06

申请人： Eaton Corporation

发明人： Peterson, Craig L.

IPC分类号： F16H61/40

CPC分类号： F16H61/4043 ,  F15B13/10 ,  F16H61/40 ,  F16H61/4017 ,  F16H61/4139 ,  F16K15/025

摘要： A closed loop hydrostatic transmission including a pump (11) having a charge pump (23) and an assembly (25). The assembly (25) includes a pair of relief and check valve assemblies (65,67), and each one includes a check valve poppet (71) relatively fixed to a washer member (83) in the absence of high pressure. The washer member (83) moves within a bore to define a chamber (85) in which is the spring (87) biasing the check poppet (71) closed. A drain valve (97) has its inlet in fluid communication with the spring chambers (85), and in response to a predetermined input, such as an electrical input signal (101), the drain valve opens (FIG. 3), and drains the chambers (85). In this condition, both check poppets (71) open, and fluid can flow freely within the closed loop so that, for example, the vehicle may be towed a short distance, without overheating the fluid, and without the need to mechanically unseat the check valves as has been common practice.

公开(公告)号：EP1424517B1

公开(公告)日：2010-03-24

申请号：EP03025605.1

申请日：2003-11-06

申请人： Eaton Corporation

发明人： Peterson, Craig L.

IPC分类号： F16H61/40

CPC分类号： F16H61/4043 ,  F15B13/10 ,  F16H61/40 ,  F16H61/4017 ,  F16H61/4139 ,  F16K15/025

公开(公告)号：EP1424517A2

公开(公告)日：2004-06-02

申请号：EP03025605.1

申请日：2003-11-06

申请人： EATON CORPORATION

发明人： Peterson, Craig L.

IPC分类号： F16H61/00

CPC分类号： F16H61/4043 ,  F15B13/10 ,  F16H61/40 ,  F16H61/4017 ,  F16H61/4139 ,  F16K15/025

摘要： A closed loop hydrostatic transmission including a pump (11) having a charge pump (23) and an assembly (25). The assembly (25) includes a pair of relief and check valve assemblies (65,67), and each one includes a check valve poppet (71) relatively fixed to a washer member (83) in the absence of high pressure. The washer member (83) moves within a bore to define a chamber (85) in which is the spring (87) biasing the check poppet (71) closed. A drain valve (97) has its inlet in fluid communication with the spring chambers (85), and in response to a predetermined input, such as an electrical input signal (101), the drain valve opens (FIG. 3), and drains the chambers (85). In this condition, both check poppets (71) open, and fluid can flow freely within the closed loop so that, for example, the vehicle may be towed a short distance, without overheating the fluid, and without the need to mechanically unseat the check valves as has been common practice.

摘要翻译： 一种闭环流体静力传动装置，其包括具有电荷泵（23）和组件（25）的泵（11）。 组件（25）包括一对释放和止回阀组件（65,67），并且每个都包括在没有高压的情况下相对固定到垫圈构件（83）的止回阀提升头（71）。 垫圈构件（83）在孔内移动以限定腔室（85），其中弹簧（87）偏置检查提升阀（71）关闭。 排水阀（97）具有与弹簧室（85）流体连通的入口，并且响应于诸如电输入信号（101）的预定输入，排水阀打开（图3），排水 腔室（85）。 在这种情况下，两个检查孔（71）打开，并且流体可以在闭环内自由流动，使得例如车辆可以拖曳短距离，而不会使流体过热，并且不需要机械地将支票 阀门一直是惯例。