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1. 发明授权

US4845947A Hydraulic drive system 失效
标题翻译：液压驱动系统
公开(公告)号：US4845947A
公开(公告)日：1989-07-11
申请号：US175154
申请日：1988-03-30
申请人： Bengt-Goran Persson , Orjan E. V. Wennerbo
发明人： Bengt-Goran Persson , Orjan E. V. Wennerbo
IPC分类号： F15B11/16
CPC分类号： F15B11/16 , F15B2211/20538 , F15B2211/3116 , F15B2211/3144 , F15B2211/324 , F15B2211/40507 , F15B2211/45 , F15B2211/50572 , F15B2211/555 , F15B2211/71 , F15B2211/75
摘要： A hydraulic drive system for one or more hydraulic motors, comprising a pump (1), a tank (25) for hydraulic fluid, one or more control valve sections (10, 11, 12) each being provided with a shunt passage and each being coupled to a respective hydraulic motor, a first shunt conduit (4) including the shunt passages of said control valve sections (10, 11, 12) connected in series for leading off of the tank (25) the temporarly surplus flow of hydraulic fluid from the pump (1), and a feed conduit (3) for connecting the control valve sections (10, 11, 12) in parallel to the pump (1). A second shunt conduit (5) is connected between the pump (1) and the tank (25) and includes a pressure responsive valve (6) which is arranged to operate in response to pressure in said first shunt conduit (4) downstream of a first non-variable restriction (13), and also in response to pressure in said shunt conduit (5) downstream of a second non-variable restriction ( 14), to establish a direct connection through said second shunt conduit (5) from the pump (1) to the tank (5) in relation to the size of the fluid flow in said first shunt conduit (4).

2. 发明申请

US20110030364A1 FLOW MANAGEMENT SYSTEM FOR HYDRAULIC WORK MACHINE 有权
标题翻译：液压工程机械流量管理系统
公开(公告)号：US20110030364A1
公开(公告)日：2011-02-10
申请号：US12867367
申请日：2009-02-11
申请人： Bengt-Goran Persson , Dale Vanderlaan , Lew Kasper
发明人： Bengt-Goran Persson , Dale Vanderlaan , Lew Kasper
IPC分类号： F15B11/17 , F15B11/00 , F15B21/08
CPC分类号： F15B7/006 , E02F9/2217 , E02F9/2242 , E02F9/2296 , F15B21/08 , F15B2211/20515 , F15B2211/20538 , F15B2211/20561 , F15B2211/20569 , F15B2211/20584 , F15B2211/50527 , F15B2211/613 , F15B2211/62 , F15B2211/633 , F15B2211/6346 , F15B2211/7053
摘要： A flow management system capable of providing adjustable hydraulic fluid flow or pressure at a common line to supply bidirectional pumps in electro-hydrostatic actuation systems and conditioning re-circulated hydraulic fluid. The system enables flow sharing between multiple actuation systems and minimization of energy consumption by a power-on-demand approach and/or electrical energy regeneration while eliminating the need for an accumulator. The system has particular application to electro-hydrostatic actuation systems that typically include bi-directional electric motor driven pumps and unbalanced hydraulic actuators connected within closed circuits to provide work output against external loads and reversely recover energy from externally applied loads.
摘要翻译：一种流量管理系统，其能够在公共管线处提供可调节的液压流体流量或压力，以在电静液压致动系统中提供双向泵并调节再循环的液压流体。该系统能够实现多个致动系统之间的流量共享，并且通过按需点火方法和/或电能再生来最小化能量消耗，同时消除对蓄能器的需要。该系统特别适用于静电驱动系统，通常包括双向电动机驱动的泵和连接在闭合回路内的不平衡液压致动器，以提供抵抗外部负载的工作输出，并从外部施加的负载反向回收能量。

3. 发明授权

US5042363A Device for remote control, with possibility for direct control, hydraulic directional valves 失效
标题翻译：液压方向阀可直接控制的遥控装置
公开(公告)号：US5042363A
公开(公告)日：1991-08-27
申请号：US429941
申请日：1989-11-01
申请人： Lars P. Eriksson , Bengt-Goran Persson
发明人： Lars P. Eriksson , Bengt-Goran Persson
IPC分类号： F15B13/042
CPC分类号： F15B13/0422 , Y10S92/04 , Y10T137/8663
摘要： The invention aims at bringing about a device for remote controlling of, for example, directional valves, which likewise allows a manual direct controlling, using a hand lever, for example. The control device includes a hydraulic cylinder (37) with ports (31,32) for feeding and evacuating, respectively, of hydraulic fluid, a piston (14) arranged in the cylinder (37), as well as a piston rod (13), for accomplishing the controlling function. The piston rod (13) is arranged to be slideably supported in the piston (14), allowing a limited movement of the piston rod (13) relative to the piston (14) independent of the pressure and load conditions in the cylinder (37), the movement possibility of the piston rod (13) being limited in at least one direction by a stop (17) arranged on the piston rod.
摘要翻译：本发明的目的在于提供一种用于例如方向阀的远程控制的装置，其同样允许使用例如手动杆的手动直接控制。所述控制装置包括液压缸（37），其具有用于分别供给和排出液压流体的端口（31,32），布置在所述气缸（37）中的活塞（14）以及活塞杆（13），用于完成控制功能。活塞杆（13）被布置成可滑动地支撑在活塞（14）中，允许活塞杆（13）相对于活塞（14）的有限运动，而与气缸（37）中的压力和负载条件无关，活塞杆（13）的运动可能性通过设置在活塞杆上的止动件（17）在至少一个方向上被限制。

4. 发明授权

US08720197B2 Flow management system for hydraulic work machine 有权
标题翻译：液压作业机流量管理系统
公开(公告)号：US08720197B2
公开(公告)日：2014-05-13
申请号：US12867367
申请日：2009-02-11
申请人： Bengt-Goran Persson , Dale Vanderlaan , Lew Kasper
发明人： Bengt-Goran Persson , Dale Vanderlaan , Lew Kasper
IPC分类号： F15B21/08
CPC分类号： F15B7/006 , E02F9/2217 , E02F9/2242 , E02F9/2296 , F15B21/08 , F15B2211/20515 , F15B2211/20538 , F15B2211/20561 , F15B2211/20569 , F15B2211/20584 , F15B2211/50527 , F15B2211/613 , F15B2211/62 , F15B2211/633 , F15B2211/6346 , F15B2211/7053
摘要： A flow management system capable of providing adjustable hydraulic fluid flow or pressure at a common line to supply bidirectional pumps in electro-hydrostatic actuation systems and conditioning re-circulated hydraulic fluid. The system enables flow sharing between multiple actuation systems and minimization of energy consumption by a power-on-demand approach and/or electrical energy regeneration while eliminating the need for an accumulator. The system has particular application to electro-hydrostatic actuation systems that typically include bi-directional electric motor driven pumps and unbalanced hydraulic actuators connected within closed circuits to provide work output against external loads and reversely recover energy from externally applied loads.
摘要翻译：一种流量管理系统，其能够在公共管线处提供可调节的液压流体流量或压力，以在电静液压致动系统中提供双向泵并调节再循环的液压流体。该系统能够实现多个致动系统之间的流量共享，并且通过按需点火方法和/或电能再生来最小化能量消耗，同时消除对蓄能器的需要。该系统特别适用于静电驱动系统，通常包括双向电动机驱动的泵和连接在闭合回路内的不平衡液压致动器，以提供抵抗外部负载的工作输出，并从外部施加的负载反向回收能量。

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