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公开(公告)号：US06955115B1
公开(公告)日：2005-10-18
申请号：US09464497
申请日：1999-12-15
申请人： Michael A. A'Hearn , Thomas J. Hajek, Sr. , Larry W. Lorimor , Daniel T. Mather , Srikrishnan T. Tolappa
发明人： Michael A. A'Hearn , Thomas J. Hajek, Sr. , Larry W. Lorimor , Daniel T. Mather , Srikrishnan T. Tolappa
IPC分类号： F15B11/08 , E02F9/22 , F15B11/024 , F15B11/16
CPC分类号： F15B11/024 , E02F9/2203 , E02F9/2221 , E02F9/226 , E02F9/2285 , F15B11/16 , F15B2211/20576 , F15B2211/3051 , F15B2211/30515 , F15B2211/30525 , F15B2211/3058 , F15B2211/3111 , F15B2211/3144 , F15B2211/31576 , F15B2211/329 , F15B2211/6355 , F15B2211/7114 , F15B2211/75 , F15B2211/76 , F15B2211/78
摘要： A fluid system is provided wherein two different fluid circuits are connected in parallel with a single source of pressurized fluid and the two fluid circuits can function together even when one of the loads is lighter than the other. This is accomplished by having the lightly loaded circuit having a directional control that when operated in one of its operative positions the flow from the rod end of the cylinder is directed through the directional control valve and combined with the supply flow being directed to the head end of the cylinder. With the other heavier loaded circuit also being actuated, the pressure of the fluid from the rod end of the fluid cylinder is equalized with the pressure of the heavier loaded circuit. Consequently, the speed of the heavier loaded circuit does not stall or slow down relative to the lightly loaded circuit. In the case of a machine having a bucket used for backdragging, the circuit needs a diverter system that provides protection from the cylinder rod of the fluid cylinder 26 from buckling during backdragging while maintaining the ability for pressure equalization when not performing a backdragging operation.
摘要翻译： 提供了一种流体系统，其中两个不同的流体回路与单个加压流体源并联连接，并且两个流体回路即使当其中一个负载比另一个轻一些时也可一起工作。 这是通过使轻载电路具有方向控制来实现的，当在其操作位置之一操作时，来自气缸的杆端的流动被引导通过方向控制阀并且与供给流相结合，引导到头端 的气缸。 在另一个较重的负载回路也被致动的情况下，来自流体缸的杆端的流体的压力与较重的负载回路的压力相等。 因此，较重负载电路的速度相对于轻载电路不会失速或减速。 在具有铲斗用于倒车的机器的情况下，电路需要一个分流器系统，该分流器系统在回扫过程中提供了防止液压缸26的气缸杆的弯曲作用，同时在不执行反向压缩操作的同时保持压力平衡的能力。
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2.发明授权
公开(公告)号：US4109561A
公开(公告)日：1978-08-29
申请号：US745508
申请日：1976-11-26
申请人： John A. Junck , Larry W. Lorimor
发明人： John A. Junck , Larry W. Lorimor
CPC分类号： F15B13/0417 , E02F9/2225 , Y10T137/86734 , Y10T137/87185
摘要： A control valve arrangement is disclosed for regulating fluid communication between a source of fluid under pressure and a double-acting hydraulic motor, including a housing defining a bore, an inlet chamber in communication with the bore and the pressure source, a pair of service chambers in communication with the bore and the hydraulic motor for actuation thereof, and a plurality of drain passages in communication with the bore, a pressure transmitting circuit defined in the housing and in communication with the bore, a relief valve which is in responsive communication with the pressure transmitting circuit for variably controlling the pressure in the inlet chamber, and a spool reciprocably disposed in the bore of the housing and having a plurality of lands for blocking communication between the inlet chamber and the service chambers in a neutral position, with the spool having metering slots for communicating fluid from the inlet chamber radially outwardly to a selected one of the service chambers and to the motor for operation thereof and for communicating return fluid from the other service chamber radially inwardly to a drain passage in a working position, and with the spool having openings for communicating the pressure transmitting circuit with a drain passage and unloading the relief valve in the neutral position and also for communicating the selected one of the service chambers to the circuit for loading the relief valve in the working position.
摘要翻译： 公开了一种用于调节在压力下的流体源与双作用液压马达之间的流体连通的控制阀装置，所述双作用液压马达包括限定孔的壳体，与孔和压力源连通的入口室，一对工作室 与所述孔和所述液压马达连通以用于其致动;以及多个与所述孔连通的排放通道，限定在所述壳体中并与所述孔连通的压力传递回路，与所述孔的响应连通的安全阀， 用于可变地控制入口室中的压力的压力传输电路和可往复地布置在壳体的孔中的线轴，并且具有多个用于阻挡入口室和维修室之间的连通的平台，其处于中间位置，线轴具有 用于将流体从入口室径向向外传送到所选择的一个中的计量槽 以及用于其操作的马达，并且用于使工作位置中的另一个维修室的回流流体径向向内连通到排放通道，并且阀芯具有用于将压力传输回路与排水通道连通并卸载浮雕的开口 阀处于中立位置，并且还用于将所选择的一个操作室连通到用于将安全阀装载到工作位置的回路。
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公开(公告)号：US4920861A
公开(公告)日：1990-05-01
申请号：US326764
申请日：1989-03-21
申请人： Larry W. Lorimor
发明人： Larry W. Lorimor
CPC分类号： F16D48/0206 , F16D2048/0209 , F16D2048/0224 , F16D2048/0281
摘要： Fluid systems for controlling clutch engagement of a vehicle drive train normally have modulating pressure relief valves to aid in smooth clutch engagement. It is desired in such systems to ensure that the system pressure is reduced during a shift so that the load piston of the modulating pressure relief valve is fully reset prior to engagement of the vehicle drive train. In this arrangement, a fluid system is provided which has a plurality of clutches. In order to ensure that the load system is fully reset, a load piston reset control mechanism is provided which establishes a path to vent the pressurized fluid from a load piston pressure chamber of a modulating presure relief valve in response to the pressure of the fluid in one of the clutches being below a predetermined pressure level. The load piston reset control mechanism has a valve mechanism for controllably connecting pressurized fluid from the load piston pressure chamber to the reservoir in response to the pressure of the fluid directed to one of the clutches being below the predetermined value. The valve mechanism has a signal control valve therein to maintain the valve mechanism in the vented position for a predetermined period of time in order to ensure the load piston has moved to its full reset position even if the fill pressure to the clutches is to high. With the load piston in the full reset position, smooth engagement of the clutches is obtained.
摘要翻译： 用于控制车辆传动系的离合器接合的流体系统通常具有调节压力释放阀以帮助平稳的离合器接合。 在这种系统中期望确保系统压力在换档期间减小，使得调节泄压阀的负载活塞在车辆传动系统接合之前被完全复位。 在这种布置中，提供了具有多个离合器的流体系统。 为了确保负载系统完全复位，提供了负载活塞复位控制机构，其建立了一个路径，以响应于流体的压力来调节压力释放阀的负载活塞压力室排出加压流体 其中一个离合器低于预定的压力水平。 负载活塞复位控制机构具有阀机构，用于响应于被引导到一个离合器的流体的压力低于预定值而将加压流体从负载活塞压力室可控地连接到储存器。 阀机构在其中具有信号控制阀，以将阀机构保持在通气位置预定的时间段，以便即使向离合器的填充压力变高，确保负载活塞已经移动到其完全复位位置。 在负载活塞处于完全复位位置时，可以获得离合器的平滑啮合。
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公开(公告)号：US4343151A
公开(公告)日：1982-08-10
申请号：US245241
申请日：1980-05-16
申请人： Larry W. Lorimor
发明人： Larry W. Lorimor
CPC分类号： F15B11/16 , B62D5/07 , F15B2211/20553 , F15B2211/30535 , F15B2211/351 , F15B2211/40515 , F15B2211/428 , F15B2211/45 , F15B2211/6054 , F15B2211/6055 , F15B2211/6355 , F15B2211/7058 , F15B2211/781
摘要： Prior art interrupted series type load sensitive hydraulic systems have not had the capability of both providing full speed simultaneous vehicle cornering and implement correction while preventing the same when the implements are operating at a high pressure level, and preventing low torque motor stall. Herein, an input flow path (22) delivers pressurized fluid flow from a source (12) to a first priority (steering) circuit (14). A series flow path (24) delivers the output flow from the circuit (14) to an implement circuit (16). A parallel flow path (26) delivers a portion of the flow from the source (12) to the implement circuit (16). A valving structure (42) is in the series flow path (24). The valving structure (42) is opened in response to load pressure in the implement circuit (16) being at or below a selected value and is closed in response to the load pressure in the implement circuit being above said value. Generally, flow through the parallel flow path (26) is blocked when differential pressure in the steering circuit (14) is below a specified value. High speed turning and implement correction are provided at low pressures and are prevented when the implement is operating at high pressure level. Low torque motor stall is prevented. Utilization of vehicle horsepower is enhanced with the selectable series/parallel circuitry.
摘要翻译： PCT No.PCT / US80 / 00577 Sec。 371日期1980年5月16日 102（e）1980年5月16日PCT申请1980年5月16日。先前的中断系列型负载敏感液压系统没有能力同时提供全速同时车辆转弯和实施修正，同时防止工具运行时相同 在高压水平，并防止低扭矩电机失速。 这里，输入流路（22）将加压流体流从源（12）输送到第一优先（转向）电路（14）。 串联流路（24）将来自电路（14）的输出流传递到实施电路（16）。 平行流动路径（26）将流的一部分从源（12）输送到工具电路（16）。 阀结构（42）处于串联流动路径（24）中。 阀体结构（42）响应于工作电路（16）中的负载压力等于或低于选定值而打开，并且响应于工具电路中的负载压力高于所述值而闭合。 通常，当转向电路（14）中的压差低于规定值时，流过平行流路（26）的流动被阻挡。 在低压下提供高速转向和机构校正，并且当工具在高压水平下操作时被防止。 防止低扭矩电机失速。 可选择的串联/并联电路增强了车辆功率的利用率。
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公开(公告)号：US4086843A
公开(公告)日：1978-05-02
申请号：US769626
申请日：1977-02-17
申请人： Larry W. Lorimor
发明人： Larry W. Lorimor
CPC分类号： E02F3/844
摘要： In a fluid system having a main control valve and bypass control valve both responsive to pilot pressure for actuation thereof for supplying fluid to a pair of hydraulic actuators and a pair of bypass valves, the pump's flow is supplied to the first actuator and the exhaust therefrom to the second via a third control valve, the exhaust from the second actuator returns via the third control valve and the main control valve to sump, the pump's flow being subjected through the bypass control valve to the first of the bypass valves whereby once a first predetermined pressure has been reached, the pump's flow passes via the bypass valve through the second end of the first actuator and is combined with the exhaust of the first actuator for driving the second actuator.
摘要翻译： 在具有主控制阀和旁路控制阀的流体系统中，两者都响应于先导压力以用于致动以将流体供应到一对液压致动器和一对旁通阀，泵的流量被供应到第一致动器和排气 通过第三控制阀到第二控制阀，来自第二致动器的排气经由第三控制阀和主控制阀返回到贮槽，泵的流经旁通控制阀经过第一旁通阀，由此一旦第一 已经达到预定的压力，泵的流经旁路阀通过第一致动器的第二端并与第一致动器的排气组合以驱动第二致动器。
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公开(公告)号：US3960174A
公开(公告)日：1976-06-01
申请号：US502826
申请日：1974-09-03
CPC分类号： F15B1/26 , Y10T137/85954 , Y10T137/86187 , Y10T137/8622
摘要： A hydraulic circuit comprises a first tank elevated above a second tank and openly communicating therewith by a conduit adapted to continuously maintain the second tank at full capacity with a hydraulic fluid. The hydraulic fluid is pumped out of the second tank and to a work system wherefrom it is recircuited back through a filtering system, retained in the first tank. Upon malfunctioning of the filtering system to prevent the egress of hydraulic fluid therethrough, the increased pressure level of the recircuited hydraulic fluid will function to open a directional control check valve in the second tank to by-pass the conduit normally communicating hydraulic fluid from the first tank to the second tank.
摘要翻译： 液压回路包括在第二罐上方升高的第一罐，并且通过适于使液压流体连续地维持第二罐的全容量的导管与其开口连通。 液压流体被泵出第二罐和工作系统，在那里它被再循环通过保留在第一罐中的过滤系统。 在过滤系统发生故障以防止液压流体通过其中时，再循环液压流体的增加的压力水平将起作用以打开第二罐中的方向控制止回阀，以绕过正常地连通第一液压流体的管道 坦克到第二个坦克。
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公开(公告)号：US4135541A
公开(公告)日：1979-01-23
申请号：US815955
申请日：1977-07-15
申请人： Larry W. Lorimor
发明人： Larry W. Lorimor
IPC分类号： F16K17/10 , F16K31/363 , G05D11/00
CPC分类号： F16K31/363 , Y10T137/2607 , Y10T137/7766
摘要： A valve assembly has a housing, a spool positioned in the housing, and a sleeve positioned about the spool. The housing has an inlet and first and second outlets. The spool is movable between a first position at which communication between the inlet and second outlet is blocked and a second position at which the inlet and second outlet are in communication. The spool is movable to the second position in response to the inlet fluid pressure exceeding a preselected value. The sleeve is movable between a first position at which communication between the first outlet and inlet is blocked and a second position at which the inlet communicates with the first outlet. The sleeve substantially maintains the pressurized fluid in the first outlet while in the first position.
摘要翻译： 阀组件具有壳体，位于壳体中的卷轴和围绕卷轴定位的套筒。 壳体具有入口和第一和第二出口。 阀芯可以在入口和第二出口之间的连通被阻挡的第一位置和入口和第二出口连通的第二位置之间移动。 响应于入口流体压力超过预选值，阀芯可移动到第二位置。 套筒可以在第一出口和入口之间的连通被阻挡的第一位置和入口与第一出口连通的第二位置之间移动。 套筒在处于第一位置时基本上将加压流体保持在第一出口中。
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公开(公告)号：US4133510A
公开(公告)日：1979-01-09
申请号：US767087
申请日：1977-02-09
申请人： Larry W. Lorimor
发明人： Larry W. Lorimor
IPC分类号： F15B13/04 , F16K11/07 , F15B13/042
CPC分类号： F16K11/07 , F15B13/0402 , Y10T137/5109 , Y10T137/86606 , Y10T137/8663 , Y10T137/87185
摘要： A pilot operated valve comprised of a cylindrical grooved spool having axially aligned throttling slots which require alignment with certain ports in an encompassing housing is prevented from rotation in the housing during reciprocation therein by a noncircular tang extending outwardly of the housing and fitted in a specially configured pilot chamber formed in an attached cover.
摘要翻译： 由具有轴向排列的节流槽组成的先导操作阀，其具有轴向排列的节流槽，其需要与围绕壳体中的某些端口对准，在其中通过从壳体向外延伸的非圆形柄往复运动，并且装配在特别配置 先导室形成在附接的盖子中。
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公开(公告)号：US3997007A
公开(公告)日：1976-12-14
申请号：US595819
申请日：1975-07-14
申请人： John A. Junck , Larry W. Lorimor
发明人： John A. Junck , Larry W. Lorimor
CPC分类号： E02F3/844 , E02F9/2004
摘要： A hydraulic control system is disclosed for selectively directing fluid to a pair of reciprocable jacks connectably disposed intermediate a frame and an implement such as a bulldozer blade for tilting and tipping the blade relative to the frame. The control system includes a fluid supply source, a flow divider valve which is in fluid communication with the supply source for providing equal flow to a pair of outlet paths, a first control valve arrangement for selectively communicating fluid from one of the outlet paths to either end of one of the jacks, and a second control valve arrangement for selectively communicating fluid from the other one of the outlet paths to either end of the other one of the jacks.
摘要翻译： 公开了一种液压控制系统，用于选择性地将流体引导到可连接地设置在框架中间的可往复运动的千斤顶以及诸如用于使叶片相对于框架倾斜和倾斜的工具的推土机叶片。 该控制系统包括一个流体供应源，一个与供应源流体连通的分流阀，用于提供相当于一对出口通道的流量;一个第一控制阀装置，用于选择性地将流体从其中一个出口路径连接到 一个千斤顶的端部，以及用于选择性地将另一个出口路径的流体连通到另一个千斤顶的任一端的第二控制阀装置。
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公开(公告)号：US3991568A
公开(公告)日：1976-11-16
申请号：US565176
申请日：1975-04-04
CPC分类号： F15B1/26 , Y10T137/0318
摘要： A hydraulic circuit comprises a first tank elevated above a second tank and openly communicating therewith by a conduit adapted to continuously maintain the second tank at full capacity with a hydraulic fluid. The hydraulic fluid is pumped out of the second tank and to a work system wherefrom it is recircuited back through a filtering system, retained in the first tank. Upon malfunctioning of the filtering system to prevent the egress of hydraulic fluid therethrough, the increased pressure level of the recircuited hydraulic fluid will function to open a directional control check valve in the second tank to by-pass the conduit normally communicating hydraulic fluid from the first tank to the second tank.
摘要翻译： 液压回路包括在第二罐上方升高的第一罐，并且通过适于使液压流体连续地维持第二罐的全容量的导管与其开口连通。 液压流体被泵出第二罐和工作系统，在那里它被再循环通过保留在第一罐中的过滤系统。 在过滤系统发生故障以防止液压流体通过其中时，再循环液压流体的增加的压力水平将起作用以打开第二罐中的方向控制止回阀，以绕过正常地连通第一液压流体的管道 坦克到第二个坦克。
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