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1. 发明授权

US5069037A Fluid supply system for vehicles 失效
标题翻译：车辆流体供应系统
公开(公告)号：US5069037A
公开(公告)日：1991-12-03
申请号：US613082
申请日：1990-11-14
申请人： Shigenori Sakigawa , Ryota Ohashi , Jiro Shibata , Masahisa Kawamura
发明人： Shigenori Sakigawa , Ryota Ohashi , Jiro Shibata , Masahisa Kawamura
IPC分类号： B60K17/10 , B60K17/28 , B60K25/02 , F15B11/17
CPC分类号： B60K17/28 , B60K25/02
摘要： A single hydraulic pump (6) is employed in a vehicle for supplementing fluid to a hydrostatic transmission (1) and for supplying fluid to a fluid-operated clutch (2) and to high pressure-actuated hydraulic actuators (3, 4, 5). Fluid discharge path (7) of the pump is connected to the hydrostatic transmission through a pressure-reducing valve (8). Fluid drain path (9) of the reducing valve is fashioned to a fluid supply path for the clutch. A second fluid supply path (11) is connected to the discharge path for supplying fluid to the hydraulic actuators and include a relief valve (12) or orifice (12A) for maintaining fluid pressure in the discharge path higher than the output pressure of the reducing valve. A high pressure relief valve (10) for establishing fluid pressure to be applied to the actuators is connected to the discharge path for minimizing a discharge pressure required to the pump.
摘要翻译：在车辆中使用单个液压泵（6），用于向液压传动装置（1）补充流体，并将流体供应到流体动作离合器（2）和高压致动液压致动器（3,4,5）。泵的流体排放路径（7）通过减压阀（8）连接到静液压传动装置。减压阀的流体排放路径（9）形成为用于离合器的流体供应路径。第二流体供给路径（11）连接到用于向液压致动器供给流体的排出路径，并且包括用于将排出路径中的流体压力保持在高于还原剂的输出压力的安全阀（12）或孔口（12A）阀。用于建立施加到致动器的流体压力的高压安全阀（10）连接到排放路径，以使泵所需的排出压力最小化。

2. 发明授权

US4856277A Two-stage flow divider with constant orifice first stage in hydraulic system for working vehicles 失效
标题翻译：用于工作车辆的液压系统中具有恒定孔口第一级的两级分流器
公开(公告)号：US4856277A
公开(公告)日：1989-08-15
申请号：US214311
申请日：1988-07-01
申请人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
发明人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
IPC分类号： B62D5/07 , F15B13/02
CPC分类号： F15B13/022 , B62D5/07
摘要： A hydraulic flow divider has first and second (147, 148) flow control valves each dividing its inflow into two flows. The constant orifice first flow control valve (147) divides flow to outlets (151) and (153). Flow from outlet (151) is then divided by the second valve (148). One of the output flows of the second valve is generated by a constant orifice and directed to a power steering cylinder. Any secondary output from the second valve is generated by a pressure relief valve (152), joins flow from outlet (153), and passes to a hydraulic lift cylinder. The arrangement secures a significant flow rate for lift cylinder operation at low pump drive engine speeds at which pump output flow is low.
摘要翻译：液压分流器具有第一和第二（147,148）流量控制阀，每个流入控制阀将其流入分成两个流。恒定孔口第一流量控制阀（147）将流量分流到出口（151）和（153）。然后，从出口（151）流出的第二阀（148）分开。第二阀的输出流中的一个由恒定孔产生，并被引导到动力转向缸。来自第二阀的任何二次输出由压力释放阀（152）产生，从出口（153）流出，并传递到液压提升缸。该配置确保在泵输出流量低的低泵驱动发动机速度下提升气缸操作的显着流量。

3. 发明授权

US4773216A Flow divider valve for hydraulic system in working vehicles 失效
标题翻译：工作车辆液压系统的分流阀
公开(公告)号：US4773216A
公开(公告)日：1988-09-27
申请号：US818285
申请日：1986-01-13
申请人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
发明人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
IPC分类号： B62D5/07 , F15B13/02 , B62D5/08 , F15B13/06
CPC分类号： F15B13/022 , B62D5/07
摘要： In a working vehicle comprising a hydraulic power steering cylinder (25) and hydraulic lift cylinder (31), a novel hydraulic system is employed which comprises first and second flow control valve means (47, 48; 147, 148; 247, 248; 347, 348), each dividing its inflow into two flows. These valve means are connected in a fashion such that output flow of a single pump (43) driven by engine (10) is first divided into two output flows one of which is then divided by the second valve means. Further, one of the output flows of the second valve means is directed towards the steering cylinder whereas the other of output flows of the both valve means are directed towards the lift cylinder.The connection is such that, while a predetermined constant flow is secured for the steering cylinder at the normal engine speeds, a flow is necessarily secured for a relatively quick operation of the lift cylinder already at a low engine speed.
摘要翻译：在包括液压动力转向缸（25）和液压提升缸（31）的作业车辆中，采用了一种新颖的液压系统，其包括第一和第二流量控制阀装置（47,48; 147,148; 247,248; 347 ，348），每个流入分为两个流。这些阀装置以这样的方式连接，使得由发动机（10）驱动的单个泵（43）的输出流首先被分成两个输出流，其中之一由第二阀装置分开。此外，第二阀装置的输出流中的一个指向转向缸，而两个阀装置的输出流中的另一个指向提升缸。该连接使得当在正常的发动机转速下为转向缸确保预定的恒定流量时，必须确保已经处于低发动机速度的提升缸的相对快速的操作的流动。

4. 发明授权

US4637482A Hydraulic system in working vehicles 失效
标题翻译：工作车辆液压系统
公开(公告)号：US4637482A
公开(公告)日：1987-01-20
申请号：US827952
申请日：1986-02-10
申请人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
发明人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
IPC分类号： B62D5/07 , B66C23/00 , E02F9/22 , F15B11/16 , F15B13/06 , B62D5/08
CPC分类号： E02F9/2221 , B62D5/07 , Y10T137/8663
摘要： In a working vehicle comprising a hydraulic power steering cylinder (25) and hydraulic lift cylinder (31), a novel hydraulic system is employed which comprises a flow control valve means (47) having an orifice (51) and relief valve (52) and arranged such that it divides output flow of a single pump (43) driven by engine (10) into a constant flow directed towards steering cylinder and a surplus flow directed towards lift cylinder. Piston (54) is particularly provided which varies, in cooperation with an orifice (55) between the pump and control valve means, the biasing force of valve spring (53) of the relief valve so as to vary the flow directed towards steering cylinder within a predetermined range in response to engine speed. The system is fashioned such that it secures a flow for a relatively quick operation of lift cylinder at a low engine speed while securing a predetermined constant flow for steering cylinder at the normal engine speeds.
摘要翻译：在包括液压动力转向缸（25）和液压提升缸（31）的工作车辆中，采用了一种新颖的液压系统，其包括具有孔口（51）和安全阀（52）的流量控制阀装置（47）被布置为使得其将由发动机（10）驱动的单个泵（43）的输出流分成指向转向缸的恒定流量和朝向提升缸的多余流量。特别提供了一种活塞（54），其与泵和控制阀装置之间的孔口（55）协同地改变安全阀的阀弹簧（53）的偏置力，以改变朝向转向缸内的流动响应于发动机速度的预定范围。该系统的形式使得其在低发动机速度下确保提升缸的相对快速操作的流动，同时以正常的发动机速度确保转向缸的预定恒定流量。

5. 发明授权

US4866936A Two-stage flow divider with pressure-relief valves in each stage to regulate flow in hydraulic system for working vehicles 失效
标题翻译：两级分流器，每级有减压阀，用于调节液压系统中工作车辆的流量
公开(公告)号：US4866936A
公开(公告)日：1989-09-19
申请号：US214319
申请日：1988-07-01
申请人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
发明人： Ryota Ohashi , Masahisa Kawamura , Jiro Shibata
IPC分类号： B62D5/07 , F15B13/02 , B62D5/08 , F15B13/06
CPC分类号： F15B13/022 , B62D5/07
摘要： A hydraulic flow divider has first and second flow control valves each dividing its inflow into two flows. The first flow control has a pressure relief valve and a constant orifice dividing flow to two outlets. The second flow control further divides one of these flows into a second set of two output flows. One of the output flows of the second flow control valve is directed to a power steering cylinder while secondary output flow of the second flow control valve joins flow from the other outlet of the first flow control. The arrangement secures adequate fluid supply to a priority load of the hydraulic system at low pump drive engine speeds.
摘要翻译：液压分流器具有第一和第二流量控制阀，每个将其流入分成两个流。第一流量控制器具有一个压力释放阀和一个恒定孔口分流到两个出口。第二流量控制进一步将这些流中的一个分成第二组两个输出流。第二流量控制阀的输出流量之一被引导到动力转向缸，而第二流量控制阀的二次输出流量从第一流量控制的另一个出口流入。在低泵驱动发动机转速下，该装置可确保液压系统的优先负载的足够的液体供应。

6. 再颁专利

USRE34833E Vehicle transmission assembly 失效
标题翻译：车辆传动组件
公开(公告)号：USRE34833E
公开(公告)日：1995-01-17
申请号：US119264
申请日：1993-09-09
申请人： Toshiyuki Hasegawa , Shigenori Sakigawa , Ryota Ohashi
发明人： Toshiyuki Hasegawa , Shigenori Sakigawa , Ryota Ohashi
IPC分类号： B60K17/10 , B60K17/28 , B60K25/00 , F16H37/08
CPC分类号： B60K17/105 , B60K17/28 , B60K2025/026
摘要： In a vehicle transmission assembly which includes a hydrostatic transmission (14) and mechanical transmission mechanism (21) for driving rear wheel axles (20) of the vehicle at a variable speed, a hydraulic pump (16) and hydraulic motor (17) of the hydrostatic transmission are mounted on a plate member (30), secured to a front of a transmission casing (15), at an upper and lower locations such that only the motor is disposed within the transmission casing at a location above the mechanical transmission mechanism. The mechanical transmission mechanism includes plural transmission shafts (31, 32, 33) all extending laterally of the transmission casing and is connected drivenly to the motor. Pump shaft (18) of the hydraulic pump is adapted to drive at least one of a rear-PTO shaft (23) and mid-PTO shaft (24) through a drive shaft (41) disposed co-axially with the pump shaft, a fluid-operated PTO-clutch (42) mounted on the drive shaft, and a gear train (43; 143; 243) disposed at a rear end portion within the transmission casing. A compactness of the transmission assembly and turnability of the vehicle with a small radius of turn are assured.
摘要翻译：在一种包括用于以可变速度驱动车辆的后轮轴（20）的液压传动装置（14）和机械传动机构（21）的车辆传动组件中，液压泵（16）和液压马达（17）液压传动装置安装在上部和下部位置处固定到变速器壳体（15）的前部的板构件（30）上，使得只有电动机在机械传动机构上方的位置处设置在变速器壳体内。机械传动机构包括多个传动轴（31,32,33），它们全部在变速器壳体的侧面延伸并且被驱动地连接到电动机。液压泵的泵轴（18）适于通过与泵轴同轴设置的驱动轴（41）驱动后PTO轴（23）和中PTO轴（24）中的至少一个，安装在驱动轴上的流体操作的PTO离合器（42）和设置在变速器壳体内的后端部分的齿轮系（43; 143; 243）。确保传动组件的紧凑性和转弯半径小的车辆的转动性。

7. 发明授权

US5046994A Vehicle transmission assembly 失效
标题翻译：车辆传动组件
公开(公告)号：US5046994A
公开(公告)日：1991-09-10
申请号：US607864
申请日：1990-11-01
申请人： Toshiyuki Hasegawa , Shigenori Sakigawa , Ryota Ohashi
发明人： Toshiyuki Hasegawa , Shigenori Sakigawa , Ryota Ohashi
IPC分类号： B60K17/10 , B60K17/28 , B60K25/00
CPC分类号： B60K17/105 , B60K17/28 , B60K2025/026
摘要： In a vehicle transmission assembly which includes a hydrostatic transmission (14) and mechanical transmission mechanism (21) for driving rear wheel axles (20) of the vehicle at a variable speed, a hydraulic pump (16) and hydraulic motor (17) of the hydrostatic transmission are mounted on a plate member (30), secured to a front of a transmission casing (15), at an upper and lower locations such that only the motor is disposed within the transmission casing at a location above the mechanical transmission mechanism. The mechanical transmission mechanism includes plural transmission shafts (31, 32, 33) all extending laterally of the transmission casing and is connected drivenly to the motor. Pump shaft (18) of the hydraulic pump is adapted to drive at least one of a rear-PTO shaft (23) and mid-PTO shaft (24) through a drive shaft (41) disposed co-axially with the pump shaft, a fluid-operated PTO-clutch (42) mounted on the drive shaft, and a gear train (43; 143; 243) disposed at a rear end portion within the transmission casing. A compactness of the transmission assembly and turnability of the vehicle with a small radius of turn are assured.
摘要翻译：在一种包括用于以可变速度驱动车辆的后轮轴（20）的液压传动装置（14）和机械传动机构（21）的车辆传动组件中，液压泵（16）和液压马达（17）液压传动装置安装在上部和下部位置处固定到变速器壳体（15）的前部的板构件（30）上，使得只有电动机在机械传动机构上方的位置处设置在变速器壳体内。机械传动机构包括多个传动轴（31,32,33），它们全部在变速器壳体的侧面延伸并且被驱动地连接到电动机。液压泵的泵轴（18）适于通过与泵轴同轴设置的驱动轴（41）驱动后PTO轴（23）和中PTO轴（24）中的至少一个，安装在驱动轴上的流体操作的PTO离合器（42）和设置在变速器壳体内的后端部分的齿轮系（43; 143; 243）。确保传动组件的紧凑性和转弯半径小的车辆的转动性。

8. 发明授权

US4643442A Fluid supply system for working vehicles 失效
标题翻译：工作车辆流体供应系统
公开(公告)号：US4643442A
公开(公告)日：1987-02-17
申请号：US761886
申请日：1985-08-02
申请人： Ryota Ohashi , Masahisa Kawamura , Koichiro Fujisaki
发明人： Ryota Ohashi , Masahisa Kawamura , Koichiro Fujisaki
IPC分类号： E02F9/22 , A01B63/00 , A01B63/10 , F15B11/17 , A01B59/043
CPC分类号： A01B63/1006
摘要： In a working vehicle having hydraulic lift cylinder (39) on the top of rear end of the vehicle and seat (34) above the cylinder case (33) of such cylinder, fluid supply system is provided which supplies fluid from a single pump (47) to both of the lift cylinder and fluid-operated working implements. This system comprises first and second valve assemblies (49, 50), connected in series and mounted on the cylinder case (33), for controlling operation of the lift cylinder and working implements, respectively. The second valve assembly (50) is particularly disposed, for an easy mounting and piping, horizontally along a lateral direction within large open space before the cylinder head (81) of cylinder case (33) and below the seat (34) by mounting same to the front of head (81). For this, stop valve (52) for lift cylinder (39) is disposed within the head (81) so as to be displayed laterally and a vertical seating surface (96) is formed to the front of head (81).
摘要翻译：在具有在车辆后端顶部的液压提升缸（39）和该气缸的气缸壳体（33）上方的座（34）的工作车辆中，提供了从单个泵（47）提供流体的流体供应系统）到提升缸和流体操作的作业工具。该系统包括串联连接并安装在气缸壳体（33）上的第一和第二阀组件（49,50），用于分别控制提升缸和作业工具的操作。第二阀组件（50）特别设置用于通过安装相同的方式在气缸壳体（33）的气缸盖（81）和座椅（34）下方的大开放空间内在横向方向上水平地安装和管道到头部（81）的前部。为此，用于提升缸（39）的截止阀（52）设置在头部（81）内以便横向显示，并且在头部（81）的前部形成有垂直的安装表面（96）。

9. 发明申请

US20100257856A1 Pump Unit And Hydrostatic Transmission 审中-公开
标题翻译：泵单元和静液压传动
公开(公告)号：US20100257856A1
公开(公告)日：2010-10-14
申请号：US12820604
申请日：2010-06-22
申请人： Masahisa Kawamura , Ryota Ohashi , Hironori Sumomozawa , Takeaki Nozaki
发明人： Masahisa Kawamura , Ryota Ohashi , Hironori Sumomozawa , Takeaki Nozaki
IPC分类号： F16H39/00
CPC分类号： F04B1/22 , B60K17/28 , F04B23/06 , F04B23/106 , F16D31/02 , F16D31/08 , F16H39/14 , F16H61/4139
摘要： There is provided a pump unit configured to be capable of transmitting a rotational per from a driving power source which is operatively connected thereto to an actuator through a pair of hydraulic fluid lines. The pump unit includes: an input shaft; a hydraulic pump main body; a PTO shaft; a PTO clutch mechanism; and auxiliary pump main body; a suction line; a discharge line; a charge line; a PTO hydraulic fluid line; a pressure-reducing valve; and a resistance valve. The PTO hydraulic fluid line and the charge line are fluidly connected to the primary side and a secondary side of the pressure-reducing valve, respectively.
摘要翻译：提供了一种泵单元，其构造成能够通过一对液压流体管线将来自与其可操作地连接的驱动动力源的旋转传递到致动器。泵单元包括：输入轴; 液压泵主体; 一个PTO轴; PTO离合器机构; 和辅助泵主体; 吸力线排放线充电线 PTO液压油管线; 减压阀; 和电阻阀。 PTO液压流体管线和加料管路分别与减压阀的初级侧和次级侧流体连接。

10. 发明申请

US20070163817A1 Pump unit 失效
标题翻译：泵单元
公开(公告)号：US20070163817A1
公开(公告)日：2007-07-19
申请号：US11623687
申请日：2007-01-16
申请人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
发明人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
IPC分类号： B60K25/00
CPC分类号： B60K17/28 , B60K17/10
摘要： There is provided a pump unit including plurality of hydraulic pump bodies respectively fluidly connected to plurality of hydraulic motor bodies, which are disposed away from the pump unit, so as to form closed circuits, the pump unit including: a housing accommodating the plurality of hydraulic pump bodies so that the plurality of hydraulic pump bodies are operatively driven by a common driving source; a charge pump body operatively driven by the driving source; a suction fluid passage fluidly connected to a suction side of the charge pump body; a discharge fluid passage fluidly connected to a discharge side of the charge pump body; a charge passage for replenishing a part of pressurized fluid in the discharge fluid passage into each of the closed circuits; and a working machine operating fluid passage for supplying a part of the pressurized fluid in the discharge fluid passage toward an external hydraulic actuator.
摘要翻译：提供了一种泵单元，包括多个液压泵体，其分别流体连接到远离泵单元的多个液压马达主体，以便形成闭合回路，所述泵单元包括：容纳多个液压的壳体使得多个液压泵体由共同的驱动源可操作地驱动; 由驱动源可操作地驱动的电荷泵体; 吸入流体通道，其流体地连接到所述电荷泵体的吸入侧; 排出流体通道，其流体地连接到电荷泵体的排出侧; 用于将排出流体通道中的加压流体的一部分补充到每个闭合回路中的装料通道; 以及工作机工作流体通道，用于将排出流体通道中的一部分加压流体提供给外部液压致动器。

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